Liquid jetting tool and liquid jetting container

Abstract

To provide a liquid jetting tool and a liquid jetting container improved in recyclability.SOLUTION: A liquid jetting tool 20 of the present invention includes: a mounting cap 30; a pump 40 equipped with a stem 41; a connecting member 50 equipped with a plate portion 51 and a moving cylinder portion 52; a depressing head 60 including a connecting cylinder portion 61 and a valve chamber 63 equipped with a jetting port 62 at its tip, and supported so as to be freely and relatively movable in the vertical direction on the connecting member 50; a valve body 70 disposed inside the valve chamber 63; a lever member 80 that is rotatably supported by the depressing head 60 and moves the valve body 70 backward when the depressing head 60 moves downward relative to the connecting member; and a biasing member 90 biasing the valve body 70 toward the jetting port 62. The head pressing load is set to be smaller than the pump load, and the biasing member 90 is made of synthetic resin. The liquid jetting container 1 of the present invention comprises the liquid jetting tool 20 and a container body 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a liquid ejection tool and a liquid ejection container. [Background technology]

[0002] BACKGROUND ART Liquid spray containers are known as containers for holding liquid contents such as lotion, and are configured so that a liquid spraying device that sprays the liquid contents in small amounts at a predetermined rate is attached to the mouth of the container body that holds the liquid contents.

[0003] A conventional liquid jetting tool for use with such a liquid jetting container includes an attachment cap attached to the opening of the container body that contains the liquid, a pump that has a stem that is biased upward and is supported by the attachment cap, a connecting member that has a plate-like portion fixed to the upper end of the stem and a sliding cylindrical portion that communicates with the stem and protrudes upward from the plate-like portion, a push-down head that has a connecting cylindrical portion slidably connected to the sliding cylindrical portion and a valve chamber that communicates with the connecting cylindrical portion and has a jetting outlet at its tip and is supported on the connecting member so as to be movable relatively in the vertical direction, and a valve body that is arranged inside the valve chamber and is movable at its tip between a closed position that closes the jetting outlet and an open position that retracts from the closed position to open the jetting outlet. A pump is known which has a rotating part rotatably supported on the push-down head, a first leg part integrally connected to the rotating part and connected to the rear end of the valve body, and a second leg part integrally connected to the rotating part and supported on the plate-shaped part, a lever member which operates to retract the valve body when the push-down head moves downward relative to the connecting member, and a biasing member which is arranged between a support surface on the push-down head and an engagement surface on the valve body and biases the valve body towards the outlet, and in which the head depression load required to press the push-down head downward relative to the connecting member is set smaller than the pump load required to press down the stem and operate the pump (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4098162 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional liquid sprayers, a metal spring is used as a biasing member that biases the valve body toward the nozzle, so when recycling the liquid sprayer, the biasing member needs to be removed and separated, and there is room for improvement in this regard.

[0006] The present invention has been made in view of the above problems, and its object is to provide a liquid ejecting tool and a liquid ejecting container that are highly recyclable. [Means for solving the problem]

[0007] The liquid jetting tool of the present invention comprises: an attachment cap attached to the mouth of a container body that contains liquid; a pump having an upwardly biased stem and supported by the attachment cap; a connecting member having a plate-like portion fixed to the upper end of the stem and a sliding cylindrical portion that communicates with the stem and protrudes upward from the plate-like portion; a connecting cylindrical portion slidably connected to the sliding cylindrical portion; a valve chamber that communicates with the connecting cylindrical portion and has a jetting outlet at its tip, the connecting member being supported so as to be movable relatively in the vertical direction; a valve element that is arranged inside the valve chamber and is movable at its tip between a closed position that closes the jetting outlet and an open position that retracts from the closed position to open the jetting outlet; and a valve element that is rotatably supported by the push-down head. a lever member that operates to retract the valve body when the push-down head moves downward relative to the connecting member; and a biasing member that is disposed between a support surface on the push-down head and an engagement surface on the valve body and biases the valve body toward the ejection port; wherein the head depression load required to press the push-down head downward relative to the connecting member is set to be smaller than the pump load required to press down the stem and operate the pump; and wherein the biasing member is made of synthetic resin.

[0008] In the liquid jetting tool of the present invention, in the above configuration, the engagement surface comprises a first engagement surface perpendicular to the axial direction of the valve body, and a reduced diameter surface that is continuous with the radially inward side of the first engagement surface and that reduces in diameter toward the rear of the valve body, and the biasing member comprises a first annular portion into which the valve body is inserted, a plurality of elastic leg portions that are each integrally formed with and spaced apart from each other in the circumferential direction of the first annular portion and that abut against the first engagement surface and the reduced diameter surface while elastically deforming radially outward, thereby applying a set load toward the jetting port to the valve body, a second annular portion into which the valve body is inserted rearward of the first annular portion and that is supported by the support surface, and a spring portion that is integrally formed between the first annular portion and the second annular portion and that compresses when the valve body moves from the closed position to the open position, thereby applying a return load to the valve body toward the closed position, and the set load is preferably smaller than the return load.

[0009] The liquid-squirting container of the present invention is characterized by comprising a container body for containing liquid and the liquid-squirting tool described above. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a liquid spouting tool and a liquid spouting container that are highly recyclable. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a cross-sectional view of a liquid-squirting container equipped with a liquid-squirting tool according to an embodiment of the present invention. [Figure 2] 2 is an enlarged cross-sectional view showing a main part of the liquid ejector shown in FIG. 1. FIG. [Figure 3] FIG. 3 is a perspective view of the biasing member shown in FIG. 2. [Figure 4] FIG. 4 is a bottom view of the biasing member shown in FIG. 3. [Figure 5] 5 is a side view of the biasing member as viewed from the arrow A shown in FIG. 4. [Figure 6] 5 is a side view of the biasing member as viewed from the arrow B shown in FIG. 4. [Figure 7]10 is a cross-sectional view of the liquid ejection container when the depression operation of the depression head is started. FIG. [Figure 8] 10 is an enlarged cross-sectional view showing a main part of the liquid ejector when the depression operation of the depression head has started. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] A liquid ejection container 1 according to one embodiment of the present invention will be described in detail below with reference to the drawings.

[0013] In this specification and claims, the up-down direction refers to the up-down direction when the liquid ejection container 1 is in the upright position shown in FIG.

[0014] As shown in FIG. 1, a liquid ejection container 1 according to one embodiment of the present invention has a container body 10 and a liquid ejection tool 20 according to one embodiment of the present invention.

[0015] The container body 10 is, for example, a blow-molded bottle made of synthetic resin and having a mouth 11 and a body 12. In this embodiment, the mouth 11 is cylindrical with its center at axis O, and a male screw 13 is integrally formed on its outer periphery. The container body 10 contains a liquid content 2, such as a lotion.

[0016] The container body 10 is not limited to a blow-molded bottle made of synthetic resin, and may be made of various materials and have various shapes as long as it has a mouth portion 11 and can contain the content liquid 2.

[0017] The liquid sprayer 20 is attached to the container body 10 and sprays predetermined amounts of the liquid content 2 contained in the container body 10. The liquid sprayer 20 has an attachment cap 30, a pump 40, a connecting member 50, a press-down head 60, a valve body 70, a lever member 80, and a biasing member 90.

[0018] The mounting cap 30 is made of synthetic resin and has a cylindrical peripheral wall 31 centered on the axis O, and an annular flange wall 32 extending radially inward from the upper end of the peripheral wall 31. A female thread 33 is integrally formed on the inner peripheral surface of the peripheral wall 31, and the mounting cap 30 is detachably attached to the opening portion 11 by threading the female thread 33 onto the male thread 13.

[0019] In this embodiment, a cylindrical outer guide wall 34 having an axis O as its center is integrally provided on the upper surface of the flange wall 32 .

[0020] Pump 40 includes a stem 41 and is supported by mounting cap 30. More specifically, pump 40 includes a pump main body 42 that is supported by mounting cap 30 and suspended within container body 10, with stem 41 protruding upward from pump main body 42 and positioned inside outer guide wall 34. A synthetic resin spring 44 is mounted between a spring receiving member 43 fixed to the outer periphery of the upper end of stem 41 and a spring receiving groove 42a provided in pump main body 42, and the spring force of spring 44 urges stem 41 upward relative to pump main body 42.

[0021] The pump 40 performs a discharge operation when the stem 41 is pressed downward relative to the pump main body 42, and pressurizes the content liquid 2 inside the pump main body 42 toward the stem 41.After the discharge operation, when the stem 41 rises toward its original position due to the spring force of the spring 44, the pump 40 performs a suction operation, and sucks the content liquid 2 contained in the container body 10 into the inside of the pump main body 42 through a tube 45 connected to the lower end of the pump main body 42.

[0022] It is preferable that all of the components or parts of the pump 40 be made of synthetic resin material, but this is not limitative.

[0023] The connecting member 50 is made of synthetic resin and includes a plate-like portion 51 fixed to the upper end of the stem 41 , and a sliding cylindrical portion 52 that communicates with the stem 41 and protrudes upward from the plate-like portion 51 .

[0024] In this embodiment, the connecting member 50 has a fitting cylinder 53 fitted and fixed to the upper end of the stem 41, and the plate-like portion 51 is fixed to the upper end of the stem 41 by being connected to one end of the upper end of the fitting cylinder 53. The sliding cylinder portion 52 is cylindrical and expands in diameter toward the upper end, and its inner space communicates with the inner space of the stem 41, i.e., the discharge flow path 46 of the pump 40, via the inner space of the fitting cylinder 53.

[0025] In this embodiment, the connecting member 50 is integrally provided with an inner guide wall 54 that is integrally connected to the outer peripheral end of the plate-like portion 51. The inner guide wall 54 is cylindrical and coaxial with the outer guide wall 34, with a smaller diameter than the outer guide wall 34.

[0026] The push-down head 60 is made of synthetic resin and includes a connecting tubular portion 61 slidably connected to the sliding tubular portion 52 of the connecting member 50, and a valve chamber 63 that communicates with the connecting tubular portion 61 and has an ejection outlet 62 at its tip. The push-down head 60 is supported by the connecting member 50 so as to be relatively movable in the vertical direction.

[0027] In this embodiment, the press-down head 60 includes a cover portion 64 made of synthetic resin, and the connecting tube portion 61 is integrally formed inside the cover portion 64. The cover portion 64 has a cylindrical skirt wall 64a centered on the axis O. A plurality of protruding ribs 64b are provided at the lower end of the skirt wall 64a. These protruding ribs 64b engage with guide grooves 35 integrally formed on the inner peripheral surface of the outer guide wall 34 of the attachment cap 30, thereby preventing the press-down head 60 from rotating in the circumferential direction about the axis O relative to the attachment cap 30 and guiding the press-down head 60 in the vertical direction along the outer guide wall 34. The upper end of the guide groove 35 extends in the circumferential direction, and when the protruding ribs 64b are positioned in the circumferentially extending portion of the guide groove 35, the press-down of the press-down head 60 is restricted. In other words, the protruding ribs 64b and the guide groove 35 form a twist lock structure that switches between operating the press-down head 60 in the pressing direction and locking it by rotating the press-down head 60. The inner peripheral surface of the skirt wall 64a is in contact with the inner guide wall 54 of the connecting member 50, and the press-down head 60 is also guided by the inner guide wall 54 in its up and down movement.

[0028] The cover 64 has a top wall 64c. When the top wall 64c is pressed downward, the press-down head 60 is pressed downward and moves downward relative to the connecting member 50. Furthermore, when the press-down head 60 moves downward relative to the connecting member 50 by a predetermined stroke and then the top wall 64c is pressed downward further, the connecting member 50 and the stem 41 together with the press-down head 60 move downward relative to the pump body 42, causing the pump 40 to perform a discharge operation.

[0029] 2, in this embodiment, a substantially cylindrical valve chamber partitioning member 65 made of synthetic resin is attached to the inside of the cover portion 64 of the push-down head 60 with its axis oriented horizontally (perpendicular to the axis O), and the inside of this valve chamber partitioning member 65 forms a valve chamber 63. The valve chamber partitioning member 65 is provided with a plurality of through holes 65a that pass through it, and the valve chamber 63 communicates with the internal flow path of the connecting cylindrical portion 61 and the internal flow path of the sliding cylindrical portion 52 connected to the connecting cylindrical portion 61 via these through holes 65a.

[0030] The ejection port 62 is provided at the tip of the valve chamber partitioning member 65. The tip of the valve chamber partitioning member 65 has a shape that tapers radially inward, and this tapered portion forms an annular valve seat 66. Furthermore, a plurality of groove flow paths 67 are provided on the inner circumferential surface of the valve chamber partitioning member 65 between the valve seat 66 and the through-hole 65a, and are aligned at intervals in the circumferential direction. The through-hole 65a is in communication with the ejection port 62 via the plurality of groove flow paths 67.

[0031] The valve element 70 is also called a shut pin. Made of synthetic resin, the valve element 70 is disposed inside the valve chamber 63. The valve element 70 is movable in a direction along the axis of the valve chamber 63 or the valve chamber partition member 65 between a closed position (position shown in FIG. 2) where the tip closes the jet outlet 62, and an open position (position shown in FIG. 8) where the valve element 70 moves back from the closed position (moves away from the jet outlet 62) to open the jet outlet 62.

[0032] In this embodiment, the valve disc 70 includes a cylindrical valve body 71 coaxial with the valve chamber partitioning member 65. When in the closed position, the reduced-diameter tip of the valve body 71 abuts the entire circumference of the inner circumferential surface of the valve seat 66, thereby closing the ejection port 62. A drive rod 72 is integrally formed at the rear end of the valve body 71. The drive rod 72 has a substantially constant outer diameter and is rod-shaped, extending coaxially with the valve chamber partitioning member 65, and is provided with an engagement groove 72a at its rear end. In addition, an annular seal 73 is integrally formed at the boundary between the valve body 71 and the drive rod 72, slidably abutting the entire circumference of the inner circumferential surface of the valve chamber partitioning member 65 to define the valve chamber 63.

[0033] An engagement surface 74 is integrally formed on the valve body 70. In this embodiment, the engagement surface 74 includes a first engagement surface 74a having an annular shape perpendicular to the axial direction of the valve body 70 and provided at the base of the seal portion 73, and a reduced diameter surface 74b that is continuous with the radially inner side of the first engagement surface 74a and that reduces in diameter toward the rear of the valve body 70 (in the direction away from the ejection port 62). In this embodiment, the reduced diameter surface 74b is a curved surface with a semicircular cross section. Note that the reduced diameter surface 74b may be, for example, an inclined surface, as long as it has a shape that reduces in diameter toward the rear of the valve body 70.

[0034] The lever member 80 is made of synthetic resin and integrally includes a rotating portion 81, a first leg portion 82, and a second leg portion 83. The first leg portion 82 and the second leg portion 83 extend in directions inclined toward each other, forming an overall V-shape with the rotating portion 81 as the center. The rotating portion 81 is rotatably supported on a rotation shaft 68 provided on the press-down head 60. The first leg portion 82 is integrally connected to the rotating portion 81 at its base, and is connected to the rear end of the valve body 70 by having a locking wall 82a provided at its tip engage with an engagement groove 72a provided in the rear end of the valve body 70, i.e., the rear end of the drive rod portion 72. The second leg portion 83 is integrally connected to the rotating portion 81 at its base, and is supported by the plate-shaped portion 51 of the connecting member 50 by having its tip abut against the upper surface of the plate-shaped portion 51.

[0035] When the top wall 64c is pushed downward and the press-down head 60 moves downward relative to the connecting member 50, the tip of the second leg 83 of the lever member 80 is pushed relatively upward by the plate-shaped portion 51, causing the lever member 80 to rotate clockwise in FIG. 2 around the pivoting portion 81. When the lever member 80 rotates clockwise in FIG. 2 around the pivoting portion 81, the locking wall 82a at the tip of the first leg 82 moves rearward, i.e., to the right in FIG. 2, retracting the valve disc 70. In this way, when the press-down head 60 moves downward relative to the connecting member 50, the lever member 80 operates to retract the valve disc 70 from the closed position toward the open position.

[0036] The biasing member 90 is disposed between the support surface 69 on the depression head 60 and the engagement surface 74 on the valve body 70, and biases the valve body 70 toward the outlet 62, i.e., the closed position.

[0037] Therefore, when the top wall 64c is pressed downward, the press-down head 60 moves downward relative to the connecting member 50, the lever member 80 rotates, and the valve body 70 moves back from the closed position to the open position, a biasing force from the biasing member 90 toward the closed position is applied to the valve body 70. Therefore, the biasing force of the biasing member 90 applies a head depression load necessary to press the press-down head 60 downward relative to the connecting member 50. This head depression load is set smaller than the pump load necessary to press down the stem 41 and operate the pump 40, i.e., to perform a discharge operation.

[0038] Here, in the liquid-squirting container 1 or liquid-squirting tool 20 according to this embodiment, the biasing member 90 is made of synthetic resin. Therefore, according to the liquid-squirting container 1 and liquid-squirting tool 20 according to this embodiment, when recycling the liquid-squirting container 1 or liquid-squirting tool 20, there is no need to remove and separate the biasing member 90, and therefore the recyclability of the liquid-squirting container 1 and liquid-squirting tool 20 can be improved.

[0039] Furthermore, in the liquid jetting device 20 according to this embodiment, in addition to the biasing member 90, the attachment cap 30, connecting member 50, press-down head 60, valve body 70, and lever member 80 are also made of synthetic resin, so by using a pump 40 that is made up entirely of synthetic resin members, the liquid jetting device 20 can be recycled as is without being separated. This further enhances the recyclability of the liquid jetting container 1 and the liquid jetting device 20.

[0040] As shown in FIGS. 2 to 6, in this embodiment, the biasing member 90 has a first annular portion 91, a plurality of elastic leg portions 92, a second annular portion 93, and a spring portion 94.

[0041] The first annular portion 91 is annular and coaxial with the valve body 70 , and the drive rod portion 72 of the valve body 70 is inserted inside the first annular portion 91 and is disposed outside the drive rod portion 72 .

[0042] The multiple (six in the illustrated example) elastic legs 92 are integrally connected at equal circumferential intervals on a surface of the first annular portion 91 facing the front side (the side of the ejection port 62). Each of the multiple elastic legs 92 has a curved claw shape that gradually curves radially inward from its base connected to the first annular portion 91 toward its tip. The tips of the multiple elastic legs 92 abut against the first engagement surface 74a and the reduced diameter surface 74b provided on the valve body 70 while being elastically deformed radially outward. The elastic force applied by the multiple elastic legs 92 to the reduced diameter surface 74b of the reduced diameter shape is converted by the reduced diameter surface 74b into a load directed toward the front side (the side of the ejection port 62) along the axis of the valve body 70. Therefore, a set load toward the ejection port 62 is applied to the valve body 70 by the elastic force due to the elastic deformation of the multiple elastic legs 92. That is, when the valve body 70 is in the closed position, it is pressed against the valve seat 66 by a set load applied by the multiple elastic legs 92. The number of elastic legs 92 can be changed in various ways.

[0043] The second annular portion 93 is annular and coaxial with the valve body 70, and is located rearward of the first annular portion 91 (the side away from the ejection port 62) with the drive rod portion 72 of the valve body 70 inserted inside and positioned outside the drive rod portion 72. The second annular portion 93 is supported by a support surface 69 provided on the push-down head 60.

[0044] Two spring portions 94 are provided, each integrally connected between the first annular portion 91 and the second annular portion 93. The two spring portions 94 each extend spirally around the axis of the first annular portion 91 and the second annular portion 93, functioning as a spring. Therefore, when the valve body 70 moves from the closed position to the open position, the two spring portions 94 compress between the first annular portion 91 and the second annular portion 93, applying a return load to the valve body 70 toward the closed position. At this time, the multiple elastic legs 92 are in contact with the first engagement surface 74a of the valve body 70, and the return load from the two spring portions 94 is applied to the first engagement surface 74a of the valve body 70 via the multiple elastic legs 92. The number of spring portions 94 is not limited to two and can be varied.

[0045] Here, the set load applied to the valve disc 70 by the multiple elastic legs 92 when the valve disc 70 is in the closed position is set to be smaller than the return load, i.e., the head depression load, applied to the valve disc 70 by the two spring portions 94 when the valve disc 70 moves from the closed position to the open position. In other words, the set load is set to be smaller than the return load, which is set to be smaller than the pump load. Furthermore, when the valve disc 70 is in the closed position, the two spring portions 94 are extended to their natural lengths, so that no load is applied to the valve disc 70 from the two spring portions 94.

[0046] In this way, the biasing member 90 is configured to have a first annular portion 91, multiple elastic leg portions 92, a second annular portion 93, and a spring portion 94, and when the valve body 70 is in the closed position, a set load that presses the valve body 70 against the valve seat 66 is applied to the valve body 70 from the multiple elastic leg portions 92, and when the valve body 70 moves from the closed position to the open position, a return load that urges the valve body 70 toward the closed position is applied to the valve body 70 from the two spring portions 94.Therefore, even if the biasing member 90 is made of synthetic resin, the two spring portions 94 are configured to have their natural length when the valve body 70 is in the closed position, thereby suppressing sagging of the two spring portions 94, and thereby ensuring that the valve body 70 returns from the open position to the closed position, thereby preventing malfunction of the valve body 70.

[0047] Next, the operation of the liquid ejection container 1 having the above configuration will be described.

[0048] When the content liquid 2 contained in the container body 10 is to be ejected from the ejection port 62, the push-down head 60 is pressed downward from the initial state shown in FIG.

[0049] When the press-down head 60 is pressed downward, the set load is set smaller than the return load, and the return load is set smaller than the pump load. Therefore, as shown in FIGS. 7 and 8, the press-down head 60 first moves downward relative to the connecting member 50. At this time, the stem 41 remains in the initial position, and the pump 40 is not operating. When the press-down head 60 moves downward relative to the connecting member 50, the lever member 80 rotates, and the valve body 70 moves from the closed position toward the open position, opening the spray port 62. When the press-down head 60 is pressed further downward from the state shown in FIGS. 7 and 8, the press-down head 60 and the connecting member 50 move downward relative to the attachment cap 30, and the stem 41 is pressed down. This causes the pump 40 to perform a discharge operation, and the content liquid 2 inside the pump main body 42 is ejected to the outside from the ejection port 62 through the stem 41, the sliding cylindrical portion 52, the connecting cylindrical portion 61, the through-hole 65a, the valve chamber 63, and the groove flow path 67. In this way, when the push-down head 60 is pressed down, the valve body 70 moves back from the closed position to the open position, opening the ejection port 62, and then the pump 40 is activated and the content liquid 2 is ejected to the outside from the ejection port 62, resulting in good operability.

[0050] After the liquid content 2 has been ejected, when the depression of the push-down head 60 is released, the valve element 70 returns from the open position to the closed position due to the return load applied by the biasing member 90, and the ejection port 62 is closed by the valve element 70. In other words, the liquid ejection container 1 and the liquid ejection device 20 have a shut-off function in which the valve element 70 closes the ejection port 62. Furthermore, the return of the valve element 70 from the open position to the closed position causes the lever member 80 to rotate in the opposite direction to that during the depression operation, and the push-down head 60 is driven by the lever member 80 to move upward relative to the connecting member 50. Furthermore, the stem 41 moves upward under the force of the spring 44. As a result, the push-down head 60 and the stem 41 return to their initial positions. Note that, when the stem 41 returns to its initial position, the liquid content 2 contained in the container body 10 is sucked into the pump main body 42. In this way, when the pushing operation of the push-down head 60 is released, the ejection port 62 is closed by the valve body 70 and then the push-down head 60 returns to its original position, thereby effectively preventing the content liquid 2 from dripping from the ejection port 62.

[0051] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0052] For example, in the above embodiment, the biasing member 90 is configured to have a first annular portion 91, multiple elastic leg portions 92, a second annular portion 93, and a spring portion 94, but other configurations may be used as long as they are made of synthetic resin and can bias the valve body 70 toward the nozzle 62. [Explanation of symbols]

[0053] 1 Liquid squirt container 2 Content liquid 10 Container body 11 Mouth 12 Torso 13 Male thread 20 Liquid squirting device 30 Mounting cap 31 Peripheral wall 32 flange wall 33 Internal thread 34 Outside guide wall 35 Guide groove 40 Pump 41 Stem 42 Pump body 43 Spring support member 44 Spring 45 tubes 46 Discharge flow path 50 Connecting member 51 Plate-shaped part 52 Sliding cylinder 53 Fitting cylinder 54 Inner guide wall 60 Press-down head 61 Connecting cylinder part 62 spout 63 Valve chamber 64 Cover part 64a Skirt Wall 64b Convex rib 64c ceiling wall 65 Valve chamber partition member 65a through hole 66 Valve seat 67 Groove channel 68 Rotating shaft 69 Support surface 70 Valve body 71 Valve body 72 Drive rod section 72a Engagement groove 73 Seal part 74 Engagement surface 74a 1st engagement surface 74b Reduced diameter surface 80 Lever member 81 Rotating part 82 1st leg 82a Retaining wall 83 Second leg 90 biasing member 91 First Circular Section 92 Elastic leg 93 Second Circular Section 94 Spring part O axis

Claims

1. an attachment cap attached to the mouth of a container body that contains a liquid; a pump having an upwardly biased stem supported by the mounting cap; a connecting member including a plate-shaped portion fixed to an upper end of the stem and a sliding cylindrical portion communicating with the stem and protruding upward from the plate-shaped portion; a push-down head that includes a connecting cylindrical portion slidably connected to the sliding cylindrical portion, and a valve chamber that communicates with the connecting cylindrical portion and has a discharge port at its tip, and that is supported on the connecting member so as to be relatively movable in the up and down direction; a valve element disposed inside the valve chamber, the valve element being movable at its tip between a closed position at which the nozzle is closed and an open position at which the valve element is retracted from the closed position to open the nozzle; a lever member including a rotating part rotatably supported on the press-down head, a first leg part integrally connected to the rotating part and connected to the rear end of the valve body, and a second leg part integrally connected to the rotating part and supported on the plate-shaped part, the lever member operating to retract the valve body when the press-down head moves downward relative to the connecting member; a biasing member disposed between a support surface provided on the push-down head and an engagement surface provided on the valve body, and biasing the valve body toward the ejection port, A liquid ejection tool in which a head depression load required to press the depression head downward relative to the connecting member is set to be smaller than a pump load required to press the stem down and operate the pump, The liquid ejector, wherein the biasing member is made of synthetic resin.

2. The engagement surface is a first engagement surface perpendicular to the axial direction of the valve body; a reduced diameter surface that is continuous with the radially inner side of the first engagement surface and that reduces in diameter toward the rear of the valve body, The biasing member is a first annular portion into which the valve body is inserted; a plurality of elastic legs that are integrally provided on the first annular portion at intervals in the circumferential direction, the elastic legs abutting the first engagement surface and the reduced diameter surface while elastically deforming radially outward, and applying a set load toward the ejection port to the valve body; a second annular portion into which the valve body is inserted rearward of the first annular portion and supported by the support surface; a spring portion provided integrally between the first annular portion and the second annular portion, the spring portion compressing when the valve element moves from the closed position to the open position to apply a return load to the valve element toward the closed position, 2. The liquid ejector according to claim 1, wherein the set load is smaller than the return load.

3. A liquid-squirting container comprising: a container body for accommodating a liquid; and the liquid-squirting tool according to claim 1 or 2.

Images