JP2014087762A - Trigger type liquid ejection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trigger type liquid ejection device capable of reducing, by employing a discharge valve structure of a special configuration and a sucking-up valve structure, the number of members, being formed compact as a whole and especially short in length.SOLUTION: A trigger type liquid ejection device for ejecting liquid in a container body 90 from the ejection port of a nozzle D by a trigger F operation includes, in a body B, a discharge valve V1 formed in a defining cylinder 32 by projecting the defining cylinder 32 defining a base end outside and inside in a cylinder 30, and a cylindrical intake B3 defining a lower vertical flow path pa1 and an upper vertical flow path pa2 constituting a vertical flow path pa. The intake defines the lower vertical flow path communicating the inside of the container body with the defining cylinder inside via a pipe 53, defines the upper vertical flow path communicating the inside of the cylinder 30 with an ejection flow path pb. A sucking-up valve body 46 constituting a sucking-up valve V2 in the upper vertical flow path is formed integrally with the upper end.

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.

  In addition, there is one communication path between the vertical flow path and the cylinder cylinder, and a discharge valve is arranged in the vertical flow path upstream of the communication path, and in the vertical flow path downstream of the communication path. The suction valve is arranged in In addition, the discharge valve has a configuration in which a ball-shaped discharge valve body is placed on a valve seat protruding from the vertical flow path, and the suction valve is supported by an elastic plate that is suspended from the upper end of the vertical flow path. The suction valve plate is in pressure contact with the suction valve seat in the longitudinal flow path, and a rod-shaped valve restraint that regulates the vertical movement of the suction valve body is integrally suspended below the suction valve plate. Has been established.

Japanese Patent No. 3789904

  The present invention employs a specially configured discharge valve structure and suction valve structure, so that the number of members can be reduced, the whole can be made compact, and there is no mistake in inserting parts. The present invention proposes a trigger type liquid ejector that can be formed short, and that can smoothly pump and eject liquid without the possibility of functional deterioration as compared with a conventional product. In addition, a trigger type liquid ejector is proposed in which the main body is formed of a plurality of components and can be easily formed by assembling them, and the discharge valve can be automatically formed by these assembling operations. Furthermore, the trigger type liquid ejector which can perform the fitting of the cylinder member which comprises a main body easily and reliably is proposed. In addition, for example, during the operation of grasping the mounting cap, the upper surface of the grasped hand can be brought into contact with and locked, and a stable ejection operation is possible. The present invention proposes a trigger type liquid ejector that can reduce the material constituting the cover as much as possible without requiring a large rear projection.

  The first means is configured as follows. That is, the longitudinal flow path pa communicating with the inside of the container body 90 through the pipe 53, the cylinder cylinder 30 projecting forward and communicating with the longitudinal flow path pa, and the longitudinal flow path pa at a position above the cylinder cylinder 30. And a main body B having an injection flow path pb that extends forward and communicates with the inside of the container body 90 by the back-and-forth movement of the plunger E slidably fitted in the cylinder cylinder 30 by the trigger F operation. A trigger-type liquid ejector that sucks liquid into the cylinder tube 30 and ejects it from the nozzle D at the tip of the injection flow path pb, and the main body B partitions the inner end of the cylinder tube 30 inward and outward. The cylinder 32 is provided so as to be provided with a discharge valve V1 in the partition cylinder 32, and a cylindrical intake B3 that defines a lower vertical flow path pa1 and an upper vertical flow path pa2 constituting the vertical flow path pa. B3 is the container 90 and the pipe 5 The lower vertical flow path pa1 that communicates with the inside of the partition cylinder 32 via the cylinder is defined, and the upper vertical flow path pa2 that communicates the interior of the cylinder cylinder 30 and the injection flow path pb is defined, and the upper vertical flow path pa2 A suction valve body 46 constituting the suction valve V2 is integrally formed at the upper end.

  The second means is configured as follows. That is, in the first means, the main body B is an injection cylinder 18 having a base end opened at the upper end of the top vertical cylinder 17 and extending forward, and defining an injection flow path pb therein. A cylinder fitting cylinder 19 that is open at the front end and closed at the rear end from a vertical cylinder 17 below the injection cylinder 18, and a discharge valve seat 20 is provided in the center of the cylinder fitting cylinder 19; The flange-shaped inner wall 31 extends from the rear end edge of the cylinder cylinder 30 fitted in the cylinder-fitting cylinder 19, and the base end portion of the cylinder cylinder 30 is partitioned inward and outward from the inner peripheral edge of the inner wall 31. A cylinder member B2 in which a partition cylinder 32 is protruded and a discharge valve body 34 integrally protruded from the partition cylinder 32 via an elastic portion 33 is pressed against the discharge valve seat 20 to form a discharge valve V1; And a partition wall 47 that vertically divides the interior of the lower vertical flow path p below the partition wall 47. 1 with an intake B3 defining an upper vertical flow path pa2 above the partition wall 47, and when the cylinder member B2 and the intake B3 are fitted to the main body B1, the lower vertical flow path pa1 and the partition cylinder 32 Are formed, and an outflow path is formed which communicates the cylinder cylinder 30 on the outer periphery of the partition cylinder 32 and the upper longitudinal flow path pa2.

  The third means was configured as follows. That is, in the second means, the intake B3 is arranged on the outer periphery of the suction valve seat 23 in which a cylindrical suction valve body 46 erected from the upper end edge of the cylindrical wall 45 is suspended from the top of the vertical cylinder 17. The suction valve V2 is configured so as to be openable and closable, and the lower vertical flow path pa1 is defined inside the cylindrical wall 45 below the partition wall 47, and the suction valve V2 is connected from the inside of the cylindrical wall 45 above the partition wall 47. An upper vertical flow path pa2 that reaches the outer periphery of the suction valve seat 23 is defined.

  The fourth means is configured as follows. That is, in the third means, the suction valve body 46 has a cylindrical shape in which the upper part gradually decreases inward, and the upper end edge of the suction valve body 46 can be opened and closed on the outer periphery of the suction valve seat 23. The suction valve V2 was configured in pressure contact with the valve.

  The fifth means is configured as follows. That is, in either the third means or the fourth means, the lower through hole 48 provided in the cylinder wall 45 of the intake B3 and the first communication hole 21 provided in the vertical cylinder 17 are provided. The intake B3 communicates via an annular lower gap 50 provided between the cylindrical wall 45 of the intake B3 and the vertical cylinder 17 to form the inflow path connecting the lower vertical flow path pa1 and the partition cylinder 32, and the intake An upper through hole 49 provided in the cylindrical wall 45 of B3 and a second communication hole 36 provided in the vertical cylinder 17 are provided with an annular upper gap 51 provided between the cylindrical wall 45 of the intake B3 and the vertical cylinder 17. The outflow passage communicating with the inside of the cylinder cylinder 30 on the outer periphery of the partition cylinder 32 and the inside of the upper vertical flow path pa2 was formed.

  The sixth means is configured as follows. That is, in the second means, the intake B3 has a cylindrical suction valve body 46 erected from the upper end edge of the cylindrical wall 45 formed at the upper portion of the small outer diameter portion 45a. A suction valve V2 is constructed by pressing the suction valve body 46 in an openable and closable manner on the inner periphery of a cylindrical suction valve seat 23 that is suspended from the top of the pipe 17 and communicates with the injection flow path pb. The lower vertical flow path pa1 is defined inside the cylindrical wall 45 below the partition wall 47, and the upper vertical passage extending from the outer periphery of the small outer diameter portion 45a above the partition wall 47 into the suction valve seat 23 via the suction valve V2. A flow path pa2 is defined.

  The seventh means is configured as follows. That is, in the first means, the main body B is an injection cylinder 18 having a base end opened at the upper end of the top vertical cylinder 17 and extending forward, and defining an injection flow path pb therein. A cylinder fitting cylinder 19 that is open at the front end and closed at the rear end from a vertical cylinder 17 below the injection cylinder 18, and a discharge valve seat 20 is provided in the center of the cylinder fitting cylinder 19; The flange-shaped inner wall 31 extends from the rear end edge of the cylinder cylinder 30 fitted in the cylinder-fitting cylinder 19, and the base end portion of the cylinder cylinder 30 is partitioned inward and outward from the inner peripheral edge of the inner wall 31. A cylinder member B2 in which a partition cylinder 32 is protruded and a discharge valve body 34 integrally protruded from the partition cylinder 32 via an elastic portion 33 is pressed against the discharge valve seat 20 to form a discharge valve V1; And a cylindrical shape in which the upper portion of the cylindrical wall 45 is formed in a small outer diameter portion 45a. With the intake B3 closed by the dome-shaped suction valve body 46, and when the cylinder member B2 and the intake B3 are fitted to the main body B1, it is suspended from the top of the vertical cylinder 17 and the inside is injected The upper surface of the suction valve body 46 is press-contacted to the lower surface of the cylindrical suction valve seat 23 communicating with the passage pb so as to be openable and closable to constitute the suction valve V2, and the lower vertical flow path is formed inside the cylindrical wall 45 of the intake B3. pa1 is defined, and an upper vertical flow path pa2 extending from the outer periphery of the small outer diameter portion 45a to the suction valve seat 23 via the suction valve V2 is defined, and the lower vertical flow path pa1 and the partition cylinder 32 are defined. An inflow path communicating with the inside, and an outflow path communicating with the inside of the cylinder cylinder 30 on the outer periphery of the partition cylinder 32 and the inside of the upper vertical flow path pa2 are formed.

  The eighth means is configured as follows. That is, in the sixth means or the seventh means, the lower through hole 48 provided in the cylinder wall 45 of the intake B3 and the first communication hole 21 provided in the vertical cylinder 17 are connected to the cylinder of the intake B3. A second communication provided in the vertical cylinder 17 is formed by communicating through an annular lower gap 50 provided between the wall 45 and the vertical cylinder 17 to form the inflow path communicating between the intake B3 and the partition cylinder 32. The hole 36 was communicated with the outer periphery of the small outer diameter portion 45a of the intake B3 to form the outflow path that communicated the inside of the cylinder cylinder 30 on the outer periphery of the partition cylinder 32 and the upper vertical flow path pa2.

  The ninth means is configured as follows. That is, in any one of the second to eighth means, there is provided a fitting position defining means for regulating the push-fitting position of the intake B3 fitted in the vertical cylinder 17.

  The tenth means is configured as follows. That is, in any one of the second to ninth means, the positioning projection 35 projecting from the rear surface of the cylinder member B2 has a fitting hole 26 formed in a predetermined position of the vertical cylinder 17. And the cylinder member B2 is fitted to the main body B1.

  The eleventh means is configured as follows. That is, in any one of the first to tenth means, a cover G that covers the upper surface, both side surfaces, and the rear surface of the main body B and is attached to the main body B is provided. A support plate portion 80 is provided that engages one end below the rear portion and extends rearward. The lower end portion of the rear wall portion 83 that covers the rear surface of the main body B is integrally connected to the upper surface of the support plate portion 80. .

  In the present invention, the structure is simplified by the presence of the intake B3, and the number of members can be reduced. Further, since the discharge valve V1 existing in the vertical flow path is accommodated in the cylinder cylinder 30, the vertical flow path pa can be formed short, and the suction valve body integrally formed at the upper end of the intake B3. Since the suction valve V2 is configured by 46, the suction valve V2 can be formed in a simple structure, can be configured as a suction valve V2 having a shorter length than the conventional one, and the whole can be formed compactly. The length can be formed short. As a result, a compact trigger with a short length can be used. In addition, there is no mistake in inserting parts compared to using a ball-shaped valve body, and there is no risk of functional deterioration compared to conventional products, and smooth liquid pumping and ejection are possible. .

  The main body B is composed of the main body B1, the cylinder member B2, and the intake B3. When the cylinder member B2 and the intake B3 are fitted to the main body B1, the lower vertical flow path pa1 and the partition cylinder 32 In the case where the inflow path that communicates with each other and the outflow path that communicates with the inside of the cylinder cylinder 30 on the outer periphery of the partition cylinder 32 and the inside of the upper vertical flow path pa2 are formed, There is an advantage that the assembly can be performed by simple means of fitting B2 from the front and the intake B3 from below, and the discharge valve V1 can also be automatically formed by these assembly operations. . Further, the discharge valve body 34 is formed integrally with the partition cylinder 32 via the elastic portion 33, and the discharge valve seat 20 can also be formed integrally with the main body portion B1, and uses a ball-like discharge valve body as a separate body. There is also an advantage that the number of members can be reduced as compared with the conventional product.

  The intake B3 has a cylindrical suction valve body 46 erected from the upper end edge of the cylindrical wall 45 and is pressed against the outer periphery of the suction valve seat 23 suspended from the top of the vertical cylinder 17 so as to be opened and closed. V2 is formed, and the lower vertical flow path pa1 is defined inside the cylindrical wall 45 below the partition wall 47, and reaches the outer periphery of the suction valve seat 23 from the inside of the cylindrical wall 45 above the partition wall 47 via the suction valve V2. When the upper vertical flow path pa2 is defined, the suction valve V2 is composed of a suction valve seat 23 formed integrally with the main body B1 and a suction valve body 46 formed integrally with the intake B3. Since it can be configured, the number of members can be reduced, and the suction valve V2 is configured by overlapping the cylindrical suction valve seat 23 and the cylindrical suction valve body 46, so that the height of this part can be shortened. There are also advantages. Such advantages are also exhibited in the case of the fourth means, the sixth means, and the seventh means.

  In the third means, the suction valve body 46 has a cylindrical shape whose upper part gradually decreases inward, and the upper end edge of the suction valve body 46 is press-contacted so that it can be opened and closed on the outer periphery of the suction valve seat 23. When the suction valve V2 is configured, there is an advantage that the suction valve V2 can be opened and closed more smoothly.

  An annular lower gap 50 provided between the cylindrical wall 45 of the intake B3 and the vertical cylinder 17 with the lower through hole 48 provided in the cylindrical wall 45 of the intake B3 and the first communication hole 21 provided in the vertical cylinder 17. The inflow passage that communicates the inside of the lower vertical flow path pa1 and the partition cylinder 32 is formed, and the upper through hole 49 provided in the cylindrical wall 45 of the intake B3 and the first through-hole provided in the vertical cylinder 17 are formed. The two communication holes 36 communicate with each other through an annular upper gap 51 provided between the cylinder wall 45 of the intake B3 and the vertical cylinder 17, and inside the cylinder cylinder 30 on the outer periphery of the partition cylinder 32 and in the upper vertical flow path pa2. When the above-described outflow passages communicating with each other are formed, the presence of each lower gap 50 and upper gap 51 allows the drilling positions of the lower through hole 48 and the upper through hole 49 to be adjusted as close as possible, As a result, the overall length can be further shortened. In the case of the eighth means, the same effect is exhibited.

  In the case where the fitting position defining means for defining the push-fitting position of the intake B3 fitted in the vertical cylinder 17 is provided, the intake B3 can be reliably fitted at a predetermined position, and the upper suction valve There is an advantage that V2 can be formed well.

  The positioning projection 35 projecting from the rear surface of the cylinder member B2 is fitted into a fitting hole 26 drilled at a predetermined position of the vertical cylinder 17 so that the cylinder member B2 is fitted to the main body B1. In this case, there is an advantage that the fitting position of the cylinder member B2 with respect to the main body B1 can be easily and reliably specified, and the configuration (for example, the upper ventilation hole 39 in the first embodiment) provided in the cylinder member B2 is provided. The cylinder member B2 can be easily and reliably fitted to the cylinder fitting cylinder 19 so as to be positioned at a predetermined position.

A cover G that covers the upper surface, both side surfaces, and the rear surface of the main body B and is attached to the main body B is provided. The cover G includes a support plate portion 80 that engages one end below the rear portion of the main body B and extends backward. When the lower end portion of the rear wall portion 83 that covers the rear surface of the main body B is integrally connected to the upper surface of the plate portion 80, for example, the upper surface of the gripped hand during the operation of grasping the mounting cap A The support plate 80 is locked to enable stable ejection operation, and in order to obtain such advantages, it is not necessary to project the rear portion of the cover G larger than the main body B, and the cover G The rear wall portion 83 can be suspended in the vicinity of the rear portion of the main body B, and only the support plate portion 80 is required to protrude in the necessary width, and the material constituting the cover G with the above advantages is made as much as possible. There is also the advantage of being able to lose weight.

It is a longitudinal cross-sectional view of a trigger type liquid ejector. (First embodiment) It is a principal part expanded sectional view of a trigger type liquid ejector. (First embodiment) It is a principal part expanded sectional view of a trigger type liquid ejector. (Second embodiment) It is a principal part expanded sectional view of a trigger type liquid ejector. (Third embodiment) It is a principal part expanded sectional view of a trigger type liquid ejector. (Fourth embodiment)

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

  1 and 2 show a first embodiment of the trigger type liquid ejector according to the present invention, in which 1 denotes the trigger type liquid ejector. 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, a connecting member C, a nozzle D, a plunger E, a trigger F, and a cover G.

  The mounting cap A is screwed to the outer periphery of the mouth / neck portion 91 of the container body 90 to mount and fix the trigger type liquid ejector 1 to the container body 90, and is connected to the lower portion of the main body B so as to be rotatable. .

  The main body B includes a longitudinal flow path pa that communicates with the inside of the mounted container body 90 via the pipe 53, a cylinder cylinder 30 that communicates with the longitudinal flow path pa and projects forward, and a position above the cylinder cylinder 30. An injection flow path pb that communicates with the vertical flow path pa and extends forward is provided.

  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 15 having a lower end opening whose upper end is closed, and a vertical cylinder 17 having a base opening at a rear eccentric position of the top plate 16 of the connecting cylinder portion 15 is raised upward. An injection cylinder 18 having a base end opened at the upper end portion of the vertical cylinder 17 extends forward. Further, a cylinder fitting cylinder 19 having a front face opened from the front face of the vertical cylinder 17 on the connecting cylinder portion 15 and closed at the rear face is protruded, and a cylindrical discharge valve seat is provided at the center of the cylinder fitting cylinder 19. 20 is projected. The inside of the vertical cylinder 17 and the inside of the discharge valve seat 20 are communicated with each other through a first communication hole 21 formed in the center of the discharge valve seat 20. Further, the flange-like top wall 10 at the upper end of the mounting cap A is brought into contact with the upper surface of the flange 22 projecting from the lower outer periphery of the connecting cylinder portion 15, and the mounting cap A is rotated with respect to the main body B1 (main body B). Wearing is possible.

  The cylinder member B <b> 2 extends from the rear end edge of the outer cylinder cylinder 30 fitted in the cylinder fitting cylinder 19 to a flange-like rear wall 31, and forwards from the inner peripheral edge of the inner wall 31 to the cylinder cylinder 30. A partition cylinder 32 that projects the inner base end portion into the inside and the outside protrudes. Further, a hemispherical discharge valve body 34 integrally extending from the front portion of the partition cylinder 32 to the rear is integrally extended to the front end of the elastic portion 33, and the front end portion of the discharge valve seat 20 is provided. The discharge valve V1 is formed by pressure-contacting and closing. Further, the positioning protrusion 35 protruding from the rear surface of the upper part of the rear wall 31 is fitted into the fitting hole 26 of the vertical cylinder 17, and the cylinder protrusion 30 inside the vertical cylinder 17 and the outer side of the partition cylinder 32 is inside the positioning protrusion 35. The second communication hole 36 communicates with the inside. Further, an annular gap 37 is provided between the cylinder fitting cylinder 19 and the cylinder cylinder 30, and a lower ventilation hole 38 drilled in the top of the connecting cylinder part 15 through the annular gap 37, The upper vent hole 39 formed in the upper part of the cylinder cylinder 30 is communicated, and when the plunger E is pushed in, the outside and the inside of the container body 90 are communicated so that the outside air is introduced into the negatively pressurized container body 90. doing.

  As shown in an enlarged view in FIG. 2, the intake B3 has a cylindrical shape in which the upper end is positioned in the upper part of the vertical cylinder 17 and the lower end is positioned in the lower end of the connecting cylinder part 15, and is fitted in the vertical cylinder 17. A lower vertical flow path pa1 and an upper vertical flow path pa2 constituting the path pa are defined, and a suction valve body 46 constituting a suction valve V2 is provided at the upper end. The suction valve body 46 in this example has a cylindrical shape in which the upper part standing from the upper end edge of the intake cylinder wall 45 is gradually reduced in diameter, and the upper end part of the suction valve body 46 is A suction valve V <b> 2 is configured by being press-contacted to the outer periphery of a cylindrical suction valve seat 23 that is suspended from the top of the vertical cylinder 17 so as to be openable and closable. Further, in this example, a partition wall 47 that divides the upper and lower sides is horizontally provided at a predetermined position above the cylindrical wall 45, and a lower vertical flow path pa <b> 1 is defined inside the cylindrical wall 45 below the partition wall 47, and above the partition wall 47. The upper vertical flow path pa2 extending from the inside of the cylindrical wall 45 to the outer periphery of the suction valve seat 23 via the suction valve V2 is defined.

  In addition, a plurality of lower through holes 48 in the circumferential direction are formed directly below the partition wall 47, and a plurality of upper through holes 49 in the circumferential direction are formed directly above the partition wall 47, An annular lower gap 50 is formed between the cylindrical wall 45 and the vertical cylinder 17, and an annular upper gap 51 is formed between the cylindrical wall 45 around the upper through hole 49 and the vertical cylinder 17. Then, an inflow passage communicating with the discharge valve V1 through the lower through hole 48, the lower gap 50, and the first communication hole 21 is formed from within the lower vertical flow path pa1, and the second communication hole 36, An outflow path communicating with the upper vertical flow path pa <b> 2 via the upper gap 51 and the upper through hole 49 is formed. Therefore, it is configured so as to communicate from the lower vertical flow path pa1 into the cylinder cylinder 30 via the inflow path and from the cylinder cylinder 30 to the upper vertical flow path pa2 via the outflow path. The upper vertical flow path pa2 communicates with the injection flow path pb defined in the injection cylinder 18. Further, a plurality of circumferentially engaging locking ribs 52 are provided below the lower through-hole 48, and a pipe 53 having an upper end locked to the locking rib 52 and fitted to the lower cylindrical wall 45 is fitted to the pipe 53. , Depending on the lower part of the container body 90.

  Further, in this example, there is provided a fitting position defining means for regulating the push-fitting position of the intake B3 fitted in the vertical cylinder 17. The fitting position defining means in this example is such that a positioning projection 54 projecting from a lower end of the vertical groove 24 provided in the connecting cylinder portion 15 is provided at a predetermined position on the outer periphery of the intake B3, thereby bringing the intake B3 into the vertical cylinder. 17 is configured to be fitted at a predetermined position.

  The connecting member C is fitted to the tip of the injection cylinder 18 by fitting the mounting cylinder 60 to the outer periphery of the tip of the injection cylinder 18, and connects the nozzle D to the tip of the injection cylinder 18 via the connection member C. ing. A substrate 61 that covers the distal end surface of the injection cylinder 18 is provided at the distal end of the mounting cylinder portion 60, and the inside of the injection flow path pb communicates with the jet outlet at the distal end of the nozzle D through a through hole 62 provided in the substrate 61. Further, spring plates 63 are integrally suspended from both sides of the front portion of the mounting cylinder portion 60, and upper ends of both side plates of the trigger F are pivotally attached to both sides behind the spring plate 63 hanging portion.

  The plunger E protrudes from a rear end portion of a peripheral wall portion 71 that can be moved back and forth between the cylinder tube 30 and the partition tube 32, and is slidably fitted to the inner periphery of the cylinder tube 30. The front end of the peripheral wall portion 71 is closed with a columnar head 72, and the sliding portion 70 is mounted so that it can be pushed backward from the position where the upper air hole 39 is closed.

  The trigger F is pivotally attached to the connecting member C at the front position of the injection cylinder 18 so that the upper end of the trigger F is pivotable, and is mounted so as to be able to swing back and forth. The lower ends of the pair of spring plates 63 are linked to the upper portions of both side surfaces of the trigger F, and are pivotally attached in a state where they are always urged forward. In addition, the tip of the plunger E is linked to the upper part of the trigger F so that the plunger E can be pushed in by pulling in the trigger F, and the trigger is restored to the original state by the elastic restoring force of the spring plate 63 from the pushed state. The plunger E is configured to be pulled back to the original state.

  The cover G covers the upper surface, both side surfaces, and the rear surface of the main body B and is fitted to the main body B. The cover G includes a support plate portion 80 that engages one end with the lower end of the rear portion of the main body B and extends rearward. . In the first embodiment, integral side wall portions 82 that cover both side surfaces of the main body B are suspended from both sides of the top wall portion 81 that covers the upper surface of the main body B, and the rear edge and both side walls of the top wall portion 81 are suspended. A rear wall 83 that connects the rear edge of the portion 82 is extended, and the lower end of the rear wall 83 is integrally connected to the upper surface of the support plate 80. In addition, a protrusion 84 protruding from the upper surface of the front end of the support plate 80 is engaged with a protrusion 27 protruding from the lower surface of the mounting plate 25 protruding from the lower rear portion of the main body B1.

  The trigger type liquid ejector 1 configured as described above pushes the plunger E from the state shown in FIG. 1 to push the plunger E, so that the liquid in the cylinder cylinder 30 passes from the above outflow path into the upper vertical flow path pa2. The suction valve V2 is opened, and the nozzle D is ejected from the ejection channel pb through the nozzle D through the nozzle D.

  Next, when the pull-in of the trigger F is stopped, the trigger F is returned to the original state by the elastic restoring force of the spring plate 63, and the plunger E is pulled out, and the discharge valve V1 is opened in the cylinder cylinder 30 which has become negative pressure to open the container body. The liquid in 90 is introduced.

  FIG. 3 shows the second embodiment. Since the configurations of the intake B3 and the suction valve V2 are different from those of the first embodiment, the explanation will be given by showing an enlarged view of the main part of the portion. In this example, the suction valve body 46 has a cylindrical shape standing from the upper end edge of the intake cylinder wall 45, and the upper inner peripheral surface of the suction valve body 46 is suspended from the top of the vertical cylinder 17. The suction valve V2 is configured to be pressed against the outer periphery of the valve seat 23 so as to be opened and closed. Further, the lower vertical flow path pa1 is defined inside the cylindrical wall 45 below the partition wall 47, and the upper vertical flow from the inside of the cylindrical wall 45 above the partition wall 47 to the outer periphery of the suction valve seat 23 via the suction valve V2. A path pa2 is defined. Since other configurations and operations are the same as those of the first embodiment, description thereof will be omitted.

  FIG. 4 shows a third embodiment. Similarly, since the configurations of the intake B3 and the suction valve V2 are different from those of the first embodiment, an explanation will be given by showing an enlarged view of a main part of the portions. In this example, a cylindrical suction valve seat 23 is provided that is suspended from the top of the vertical cylinder 17 and communicates with the injection flow path pb. The intake B3 has an upper portion of the cylindrical wall 45 formed in a small outer diameter portion 45a having a small outer diameter, and an annular space 55 is provided between the small outer diameter portion 45a and the vertical cylinder 17, and this small diameter outer peripheral portion. A cylindrical suction valve body 46 is erected from the upper end of 45a. The suction valve body 46 is formed in a reverse skirt shape that gradually spreads upward, and the upper end edge of the suction valve body 46 is pressed against the inner periphery of the suction valve seat 23 so that the suction valve V2 can be opened and closed. It is composed. The intake B3 defines a lower vertical flow path pa1 inside the cylindrical wall 45 below the partition wall 47, and the suction valve from the annular space 55 on the outer periphery of the cylindrical wall 45 above the partition wall 47 via the suction valve V2. An upper vertical flow path pa2 reaching the seat 23 is defined. In addition, a lower through hole 48 provided in the cylinder wall 45 of the intake B3 and a first communication hole 21 provided in the vertical cylinder 17 are provided in an annular lower part provided between the cylinder wall 45 and the vertical cylinder 17 of the intake B3. The inflow path that communicates through the gap 50 and communicates between the intake B3 and the partition cylinder 32 is formed. Further, the second communication hole 36 provided in the vertical cylinder 17 is formed as the outflow path that connects the inside of the cylinder cylinder 30 on the outer periphery of the partition cylinder 32 and the upper vertical flow path pa2. Since other configurations and operations are the same as those of the first embodiment, description thereof will be omitted.

  FIG. 5 shows a fourth embodiment. Similarly, since the configurations of the intake B3 and the suction valve V2 are different from those of the first embodiment, description will be made by showing an enlarged view of the main part of the portions. In this example, a cylindrical suction valve seat 23 is provided that is suspended from the top of the vertical cylinder 17 and communicates with the injection flow path pb. The intake B3 has an upper portion of the cylindrical wall 45 formed in a small outer diameter portion 45a having a small outer diameter, and an annular space 55 is provided between the small outer diameter portion 45a and the vertical cylinder 17, and this small diameter outer peripheral portion. A thin dome-shaped suction valve body 46 that closes the upper end of 45a is provided. The suction valve V2 is configured by pressing the upper surface of the suction valve body 46 to the lower surface of the suction valve seat 23 so as to be openable and closable.

  Further, the intake B3 defines a lower vertical flow path pa1 inside the cylindrical wall 45, and the suction valve seat 23 from the annular space 55 on the outer periphery of the small outer diameter portion 45a of the cylindrical wall 45 via the suction valve V2. An upper vertical flow path pa2 leading to the inside is defined. In addition, a lower through hole 48 provided in the cylinder wall 45 of the intake B3 and a first communication hole 21 provided in the vertical cylinder 17 are provided in an annular lower part provided between the cylinder wall 45 and the vertical cylinder 17 of the intake B3. The inflow passage communicating with the inside of the intake B 3 and the inside of the partition cylinder 32 is formed through the gap 50, and the second communication hole 36 provided in the vertical cylinder 17 is connected to the inside of the cylinder cylinder 30 on the outer periphery of the partition cylinder 32. The outflow path communicating with the longitudinal flow path pa2 is formed. Since other configurations and operations are the same as those of the first embodiment, description thereof will be omitted.

DESCRIPTION OF SYMBOLS 1: Trigger type liquid ejector A: Mounting cap 10 ... Flange-shaped top wall B: Main body B1: Main body part 15 ... Connection cylinder part, 16 ... Top plate, 17 ... Vertical cylinder, 18 ... Injection cylinder, 19 ... Cylinder fitting cylinder 20 ... Discharge valve seat, 21 ... First communication hole, 22 ... Flange, 23 ... Suction valve seat,
24 ... Vertical groove, 25 ... Mounting plate, 26 ... Fitting hole, 27 ... Protrusion, B2: Cylinder member 30 ... Cylinder tube, 31 ... Back wall, 32 ... Division tube, 33 ... Elastic part, 34 ... Discharge valve body,
35 ... positioning protrusion, 36 ... second communication hole, 37 ... annular gap, 38 ... lower ventilation hole,
39 ... Upper ventilation hole B3: Intake 45 ... Cylinder wall, 45a ... Small outer diameter part, 46 ... Suction valve body, 47 ... Partition, 48 ... Lower through-hole,
49 ... Upper through hole, 50 ... Lower gap, 51 ... Upper gap, 52 ... Locking rib, 53 ... Pipe,
54 ... Positioning projection, 55 ... Annular space C: Connecting member 60 ... Mounting cylinder part, 61 ... Substrate, 62 ... Through hole, 63 ... Spring plate D: Nozzle E: Plunger 70 ... Sliding part, 71 ... Peripheral wall part, 72 ... Columnar head F: Trigger G: Cover 80 ... Support plate part, 81 ... Top wall part, 82 ... Side wall part, 83 ... Rear wall part, 84 ... Projection pa: Vertical flow path pa1: Lower vertical flow path pa2: Upper part Longitudinal flow path pb: injection flow path V1: discharge valve V2: suction valve 90: container 91 ... mouth neck

Claims (11)

  A longitudinal channel (pa) communicating with the inside of the container body (90) via a pipe (53), a cylinder tube (30) projecting forward in communication with the longitudinal channel (pa), and a cylinder tube (30 ) It has a main body (B) having an injection flow path (pb) that is communicated with the vertical flow path (pa) and extends forward at an upper position, and slides in the cylinder cylinder (30) by the trigger F operation. By the back-and-forth movement of the plunger (E) that is movably fitted, the liquid in the container body (90) is sucked into the cylinder tube (30) and is ejected from the nozzle (D) at the tip of the injection flow path (pb). A trigger-type liquid ejector that ejects, and a main body (B) projects a partition tube (32) that partitions the inner base end of the cylinder tube (30) inward and outward, and a discharge valve in the partition tube (32) (V1) and a lower vertical channel (pa1) and an upper vertical channel (pa) constituting the vertical channel (pa) a lower vertical flow path that includes a cylindrical intake (B3) that defines a2), and the intake (B3) communicates between the container body (90) and the partition cylinder (32) through the pipe (53) (Pa1) and an upper vertical flow path (pa2) that communicates the inside of the cylinder cylinder (30) and the injection flow path (pb) are defined, and suction is performed in the upper vertical flow path (pa2). A liquid ejector comprising a suction valve body (46) constituting the upper valve (V2) formed integrally with an upper end.   The main body (B) is provided with an injection cylinder (18) in which a base end is opened at the upper end portion of the top vertical cylinder (17) and extends forward, and an injection flow path (pb) is defined inside. From the vertical cylinder (17) below the injection cylinder (18), a cylinder fitting cylinder (19) whose front end is open and whose rear end is closed projects, and a discharge valve seat (20) is placed in the center of the cylinder fitting cylinder (19). A flange-like back wall (31) extends from the rear end edge of the projecting main body (B1) and the cylinder tube (30) fitted in the cylinder fitting tube (19), and the back wall ( 31) A discharge valve in which a partition tube (32) for partitioning the inner base end portion of the cylinder tube (30) inward and outward from the inner peripheral edge protrudes integrally from the partition tube (32) via an elastic portion (33) The body (34) is press-contacted to the discharge valve seat (20) to form the discharge valve (V1), and the cylinder member (B2) is fitted into the vertical cylinder (17) And an intake (B3) defining a lower vertical channel (pa1) below the partition (47) and an upper vertical channel (pa2) above the partition (47). An inflow passage that communicates the inside of the lower longitudinal flow path (pa1) and the inside of the partition cylinder (32) when the cylinder member (B2) and the intake (B3) are fitted to the main body (B1), and the partition cylinder (32) The trigger type liquid ejector according to claim 1, wherein an outflow passage that communicates the inside of the outer cylinder tube (30) and the inside of the upper vertical flow path (pa2) is formed.   The intake (B3) has a cylindrical suction valve body (46) erected from the upper end edge of the cylindrical wall (45) on the outer periphery of the suction valve seat (23) vertically suspended from the top of the vertical cylinder (17). The suction valve (V2) is configured so as to be openable and closable, and the lower vertical channel (pa1) is defined inside the cylindrical wall (45) below the partition wall (47), and the cylinder above the partition wall (47) The trigger type liquid ejector according to claim 2, wherein an upper vertical flow path (pa2) is formed from the inside of the wall (45) to the outer periphery of the suction valve seat (23) via the suction valve (V2). .   The suction valve body (46) has a cylindrical shape whose upper part gradually decreases inward, and the upper end edge of the suction valve body (46) is pressed against the outer periphery of the suction valve seat (23) so that it can be opened and closed. The trigger type liquid ejector according to claim 3 which constituted suction valve (V2).   The lower through hole (48) provided in the cylindrical wall (45) of the intake (B3) and the first communication hole (21) provided in the vertical cylinder (17) are connected to the cylindrical wall (45) of the intake (B3). Communicating with an annular lower gap (50) provided between the vertical cylinder (17) and forming the inflow path communicating with the lower vertical flow path (pa1) and the partition cylinder (32); The upper through hole (49) provided in the cylindrical wall (45) of the intake (B3) and the second communication hole (36) provided in the vertical cylinder (17) are connected to the cylindrical wall (45) of the intake (B3). It communicates via an annular upper gap (51) provided between the vertical cylinder (17) and the cylinder cylinder (30) on the outer periphery of the partition cylinder (32) and the upper vertical flow path (pa2). The trigger type liquid ejector according to claim 3 or 4, wherein the outflow path is formed.   The intake (B3) has a cylindrical suction valve body (46) erected from an upper end edge of a cylindrical wall (45) having an upper portion formed in a small outer diameter portion (45a) having a small outer diameter, and a vertical cylinder (17 ), And the suction valve body (46) is pressed against the inner periphery of a cylindrical suction valve seat (23) communicating with the injection flow path (pb) so that the suction valve body (46) can be opened and closed. The upper valve (V2) is configured, and a lower vertical flow path (pa1) is defined inside the cylindrical wall (45) below the partition wall (47), and from the outer periphery of the small outer diameter portion (45a) above the partition wall (47). 3. The trigger type liquid ejector according to claim 2, wherein an upper vertical flow path (pa2) extending into the suction valve seat (23) via the suction valve (V2) is defined.   The main body (B) is provided with an injection cylinder (18) in which a base end is opened at the upper end portion of the top vertical cylinder (17) and extends forward, and an injection flow path (pb) is defined inside. From the vertical cylinder (17) below the injection cylinder (18), a cylinder fitting cylinder (19) whose front end is open and whose rear end is closed projects, and a discharge valve seat (20) is placed in the center of the cylinder fitting cylinder (19). A flange-like back wall (31) extends from the rear end edge of the projecting main body (B1) and the cylinder tube (30) fitted in the cylinder fitting tube (19), and the back wall ( 31) A discharge valve in which a partition tube (32) for partitioning the inner base end portion of the cylinder tube (30) inward and outward from the inner peripheral edge protrudes integrally from the partition tube (32) via an elastic portion (33) A cylinder member (B2) in which the body (34) is pressed against the discharge valve seat (20) to form the discharge valve (V1), and fitted into the vertical cylinder (17) The upper part of (45) is formed in a small outer diameter part (45a) with a cylindrical shape, and the upper end is constituted by an intake (B3) closed with a dome-shaped suction valve body (46), Cylindrical suction that hangs down from the top of the vertical cylinder (17) and communicates with the injection flow path (pb) when the cylinder member (B2) and the intake (B3) are fitted to the part (B1) The upper surface of the suction valve body (46) is pressed against the lower surface of the valve seat (23) so as to be openable and closable to constitute the suction valve (V2), and the lower vertical flow path is formed inside the cylindrical wall (45) of the intake (B3). (Pa1) and an upper vertical flow path (pa2) from the outer periphery of the small outer diameter portion (45a) to the inside of the suction valve seat (23) via the suction valve (V2), An inflow passage communicating the inside of the lower vertical flow path (pa1) and the inside of the partition cylinder (32), and the inside of the cylinder cylinder (30) on the outer periphery of the partition cylinder (32) Trigger type liquid sprayer according to claim 1, outlet passage which communicates the upper longitudinal channel (pa2) is formed within.   The lower through hole (48) provided in the cylindrical wall (45) of the intake (B3) and the first communication hole (21) provided in the vertical cylinder (17) are connected to the cylindrical wall (45) of the intake (B3). It communicates via an annular lower gap (50) provided between the vertical cylinder (17) and the inflow passage communicating between the intake (B3) and the partition cylinder (32) is formed, and the vertical cylinder (17 ) Is communicated with the outer periphery of the small outer diameter portion (45a) of the intake (B3), and the inside of the cylinder cylinder (30) on the outer periphery of the partition cylinder (32) and the upper vertical flow path ( The trigger type liquid ejector according to claim 6 or 7, wherein the outflow passage communicating with pa2) is formed.   The trigger type liquid ejector according to any one of claims 2 to 8, further comprising a fitting position defining means for defining a push-fitting position of the intake (B3) to be fitted in the vertical cylinder (17). .   A positioning projection (35) projecting from the rear surface of the cylinder member (B2) is fitted into a fitting hole (26) drilled at a predetermined position of the vertical cylinder (17) to be fitted to the main body (B1). The trigger type liquid ejector according to any one of claims 2 to 9, wherein the cylinder member (B2) is configured to be fitted.   A cover (G) that covers the upper surface, both side surfaces, and the rear surface of the main body (B) and that is attached to the main body (B) is provided. A support plate (80) extending to the upper surface of the support plate (80) is integrally connected to the lower end of the rear wall (83) covering the rear surface of the main body (B). The trigger type liquid ejector according to any one of claims 10 to 10.