Ejection head

Abstract

To provide a jetting head in which a function capable of suppressing solidification of a content by a shut-off pin is easily conveyed to a user.SOLUTION: The ejection head 1 includes a joint 2 having a connecting portion 58a connected to a stem 2a and a communication path T1 and moving together with the stem 58a, a head 3 movably attached to the joint 2 in a direction along an axis O and having an internal path T1 communicating with the communication path T2 and an opening 8d, an ejection path T2 communicating with the internal path 11c and provided with an ejection port, a shut-off pin 4 moving between a retracted position where the ejection port is located inside the opening and an advanced position where the ejection port is located outside the opening, and a moving mechanism moving the shut-off pin 4 from the retracted position to the advanced position when the head 3 is pressed. T3 8d 11c 11c 8d.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a spray head that is used by connecting it to the stem of a pump-equipped container, an aerosol container, or the like. [Background technology]

[0002] A spray head has been used in the past, which is connected to the stem of a container containing the contents and sprays the contents outward by pressing it. In a commonly used spray head, the spray outlet is left open, so if the spray head is not used for a long period of time, the contents remaining in the spray head may solidify.

[0003] Known jet heads that can solve these problems include those shown in Patent Documents 1 to 3. These jet heads are equipped with a shutoff pin inside the head, which is equipped with a jet outlet. The shutoff pin is biased forward by a coil spring and normally moves forward inside the head to close the jet outlet. The shutoff pin is connected to the head via a moving mechanism such as a lever. When the head is pressed, the lever moves the shutoff pin back, opening the jet outlet. The depressed head also pushes down the stem, so that the contents contained in the container are introduced from the stem into the head and ejected from the jet outlet. When the pressure on the head is released, the coil spring moves the shutoff pin forward, closing the jet outlet. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 3942957 [Patent Document 2] Patent No. 4975560 [Patent Document 3] Patent No. 5128253 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in conventional spray heads that close the nozzle with a shut-off pin, the shut-off pin moves inside the head as described above. In other words, it is difficult for users of the spray head to notice that the shut-off pin is moving, making it difficult to make users aware of the function of the shut-off pin that can prevent the contents from solidifying, and therefore, the product value cannot be fully conveyed to users.

[0006] In view of these points, the present invention aims to propose a spray head that can easily convey to the user the function of preventing the contents from solidifying due to the shut-off pin. [Means for solving the problem]

[0007] The present invention is a spray head comprising: a joint that moves with the stem and has a connecting part that is connected to the stem of a container and a communicating passage through which the contents sprayed from the stem pass; a head that is movably attached to the joint in a direction along the axis of the stem and has an internal passage that leads to the communicating passage and an opening that opens in a direction intersecting the axis; a shutoff pin that has a spray passage that leads to the internal passage and has a spray outlet at its outlet, and that moves between a retracted position where the spray outlet is located inside the opening and an advanced position where the spray outlet is located outside the opening; and a moving mechanism that moves the shutoff pin from the retracted position to the advanced position when the head is pressed. [Effects of the Invention]

[0008] The spray head of the present invention makes it easier for users to understand the function of the shut-off pin, which can prevent the contents from solidifying. Furthermore, when this function is communicated to users, the appeal of the spray head increases, allowing it to be differentiated from other products. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a vertical cross-sectional side view of an embodiment of a jet head according to the present invention attached to a pump-equipped container. [Figure 2] 2 is a cross-sectional view of the jet head shown in FIG. 1, viewed obliquely. FIG. [Figure 3] FIG. 2 is a perspective view of the joint shown in FIG. 1. [Figure 4] FIG. 2 is a perspective view of the oscillator shown in FIG. [Figure 5] FIG. 2 is a perspective view of the oscillator holder shown in FIG. [Figure 6] 2 is a diagram showing a state in which the head is pressed from the state shown in FIG. 1, and the shutoff pin moves from the retracted position to the advanced position. FIG. [Figure 7] FIG. 7 is a diagram showing a state in which the head is further pressed from the state shown in FIG. 6, causing the contents to be ejected from the ejection port. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, a description will be given of a jet head 1, which is one embodiment of a jet head according to the present invention, with reference to the drawings. In this specification and the like, the up-down direction refers to the direction along the illustrated axis O (the central axis of the stem 58a, which will be described later), with the side on which the pipe 55 is located being the "bottom" and the side on which the head main body 5 is located being the "top." The radial direction refers to a direction perpendicular to the axis O in a plane perpendicular to the axis O, and the circumferential direction refers to a direction revolving around the axis O in this plane. The front side refers to the side on which an opening 8d, which will be described later, is provided (the left side in FIG. 1), and the rear side refers to the opposite side (the right side in FIG. 1).

[0011] As shown in Fig. 1, the spray head 1 is attached to a container (a pump-equipped container 50 in this embodiment) when used. The pump-equipped container 50 is composed of a container body 51 and a pump-type dispenser 52. Before describing the spray head 1 in detail, the components that make up the container body 51 and the pump-type dispenser 52 in this embodiment will first be described.

[0012] The container body 51 is shaped like a bottle overall, and has a cylindrical mouth 51a at its top. A male screw 51b is provided on the outer periphery of the mouth 51a. A storage space S1 for storing the contents is defined inside the container body 51.

[0013] 1, the pump-type dispenser 52 includes a cylinder 53, a valve member 54, a pipe 55, an internal member 56, a piston 57, a cylindrical member 58, a lower holder 59, a packing 60, a cap 61, an upper holder 62, and a pump spring 63. In this embodiment, each of the members constituting the pump-type dispenser 52 is basically formed into a shape centered on an axis O.

[0014] Cylinder 53 includes a disk-shaped bottom wall portion 53a with an upwardly protruding central portion, a cylindrical tube wall portion 53b rising from the outer edge of bottom wall portion 53a, and a flange wall 53c extending radially outward from the upper portion of tube wall portion 53b. A through-hole (suction port 53d) is provided in the protruding central portion of bottom wall portion 53a. A cylindrical holding tube 53e is provided on the underside of bottom wall portion 53a, surrounding suction port 53d and extending downward to hold pipe 55. A through-hole (vent hole 53f) is provided in tube wall portion 53b.

[0015] Valve member 54 includes base 54a, valve body 54b that covers suction port 53d inside base 54a and seats on the upper surface of bottom wall 53a, and elastically deformable connecting piece 54c that connects base 54a and valve body 54b. Valve member 54 functions as a check valve, and when the pressure inside cylinder 53 is reduced, valve body 54b, which has been closing suction port 53d, moves away from bottom wall 53a to open suction port 53d.

[0016] In this embodiment, base 54a is cylindrical with a lid and has a shape in which the center of the upper surface is concave downward, and has an opening (not shown) through which the contents that have passed through suction port 53d pass. Base 54a is fitted and held on the inner circumferential surface of cylindrical wall portion 53b, whereby valve member 54 is held within cylinder 53.

[0017] The pipe 55 is hollow, and its upper end is inserted into the holding cylinder 53e and is fitted and held therein.

[0018] The internal member 56 is disposed inside the cylinder 53 and moves up and down relative to the cylinder 53. The internal member 56 includes a cylindrical connecting tube 56a and a bottom portion 56b that closes the lower end of the connecting tube 56a and extends radially outward. The connecting tube 56a is also provided with a hole (communication port 56c) that passes through it.

[0019] The piston 57 is inserted into the connecting tube 56a and disposed inside the cylinder 53. The piston 57 in this embodiment includes an annular base 57a. An outer sliding piece 57b extending upward and downward from the base 57a is provided on the outer edge of the base 57a. The outer sliding piece 57b slidably and liquid-tightly contacts the inner circumferential surface of the cylindrical wall portion 53b. An inner sliding piece 57c extending upward and downward from the base 57a is provided on the inner edge of the base 57a. A lower portion of the inner sliding piece 57c liquid-tightly contacts the upper surface of the bottom portion 56b, and an upper portion of the inner sliding piece 57c slidably and liquid-tightly contacts the inner circumferential surface of an expanded diameter portion 58b (described later) of the cylindrical member 58.

[0020] The tubular member 58 is a member having an overall tubular shape. The tubular member 58 includes a cylindrical stem 58a and an expanded diameter portion 58b that is connected to the lower end of the stem 58a and has a larger diameter than the stem 58a. When the connecting tube 56a is inserted into the stem 58a, the two are fitted together, and the internal member 56 and the tubular member 58 move integrally relative to the cylinder 53.

[0021] The lower holder 59 has a portion located radially outward of the stem 58a and a portion located radially outward of the expanded diameter portion 58b, and is equipped with a lower base portion 59a that is fitted and held on the inner circumferential surface of the cylindrical wall portion 53b. A lower flange 59b extending radially outward is provided at the upper end of the lower base portion 59a. The lower holder 59 prevents the internal member 56, piston 57, and cylindrical member 58 from slipping out of the cylinder 53.

[0022] The packing 60 is in the shape of an annular plate, and is inserted into and fitted into the cylindrical wall portion 53b of the cylinder 53. When the pump-type dispenser 52 is attached to the container body 51, the packing 60 is sandwiched between the opening portion 51a and the flange wall 53c. This prevents problems such as the contents spilling out of the opening portion 51a when the container body 51 is turned over, for example.

[0023] The cap 61 has a disk-shaped top wall 61a with a through-hole in the center. The top wall 61a has a cylindrical lower peripheral wall 61b extending downward from the outer edge, and an upper peripheral wall 61c extending upward from the top surface. An upper portion of the inner peripheral surface of the lower peripheral wall 61b bulges radially inward to fit and hold the flange wall 53c, thereby holding the cylinder 53 in the cap 61. The inner peripheral surface of the lower peripheral wall 61b is provided with a female threaded portion 61d that screws onto the male threaded portion 51b. The cap 61 can be attached to the container body 51 by screwing the male threaded portion 51b into the female threaded portion 61d.

[0024] The upper holder 62 includes a cylindrical upper base 62a and an upper flange 62b extending radially outward from the upper end of the upper base 62a. The stem 58a is inserted into the inside of the upper base 62a, and the upper base 62a is fitted and held by the stem 58a.

[0025] In this embodiment, the pump spring 63 is a coil spring made of a spirally wound metal wire. The pump spring 63 is disposed between the lower base portion 59a and the upper flange 62b and biases the stem 58a upward.

[0026] Next, the jet head 1 will be described in detail. As shown in Figures 1 and 2, the jet head 1 of this embodiment includes a joint 2, a head 3, and a shut-off pin 4. The head 3 is made up of a head main body 5, a swinging body 6, a swinging body holder 7, a nozzle 8, and a head spring 9. The shut-off pin 4 is made up of a base end member 10 and a tip end member 11. Each member that makes up the jet head 1, except for the head spring 9, is made of a hard synthetic resin (such as polypropylene (PP), polybutylene terephthalate (PBT), or polyacetal (POM) resin).

[0027] The joint 2 has a cylindrical connecting portion 2a. The connecting portion 2a is inserted into the inside of the stem 58a and connected thereto. In this embodiment, the connecting portion 2a is configured so that the outer peripheral surface of the connecting portion 2a is fitted and held against the inner peripheral surface of the stem 58a, and the joint 2 moves together with the stem 58a. An upper wall portion 2b extending radially outward is provided at the upper end of the connecting portion 2a, and a cylindrical peripheral wall portion 2c extending downward is provided at the outer edge of the upper wall portion 2b.

[0028] An upper cylindrical portion 2d is provided on the upper surface of the upper wall portion 2b, extending upward with its upper end curved radially outward. A plate-shaped portion 2e is provided inside the upper cylindrical portion 2d and extending along the axis O. As shown in FIG. 3, the thickness of the plate-shaped portion 2e is smaller than the inner diameter of the connecting portion 2a, and an inlet 2f is formed at the base of the plate-shaped portion 2e. That is, the passage defined inside the connecting portion 2a and the passage defined between the upper cylindrical portion 2d and the plate-shaped portion 2e are connected by the inlet 2f. Here, the passage defined inside the connecting portion 2a, the inlet 2f, and the passage defined between the upper cylindrical portion 2d and the plate-shaped portion 2e are collectively referred to as the communication passage T1. A joint inclined portion 2g, which slopes upward from the front to the rear, is provided at the upper end of the plate-shaped portion 2e.

[0029] The head body 5 is a member that moves relative to the joint 2 in a direction along the axis O. In this embodiment, the head body 5 includes a cylindrical connecting tube portion 5a that surrounds the upper tube portion 2d. The upper tube portion 2d is in slidable contact with the inner circumferential surface of the connecting tube portion 5a. The head body 5 also includes a head top wall 5b located above the connecting tube portion 5a, a head outer peripheral wall 5c that extends downward from the outer edge of the head top wall 5b and surrounds the peripheral wall portion 2c, and a cylindrical horizontally-oriented tube portion 5d located at the upper front side of the head outer peripheral wall 5c, with its rear end connected to the connecting tube portion 5a and its front end protruding forward from the head outer peripheral wall 5c. Here, the passage defined inside the connecting tube portion 5a and the horizontally-oriented tube portion 5d is referred to as the internal passage T2. An inwardly-oriented protrusion 5e that protrudes radially inward is provided at the lower portion of the inner circumferential surface of the head outer peripheral wall 5c. The inward convex portion 5e engages with the lower end of the peripheral wall portion 2c in the state shown in FIG.

[0030] As shown in Figures 1 and 4, the oscillator 6 includes a plate-shaped oscillator main body 6a that is curved in an arc shape in side view, and a pair of cylindrical shaft portions 6b that protrude outward in the width direction from the upper end of the oscillator main body 6a. A pair of guide ribs 6c are provided on the lower surface of the oscillator main body 6a, spaced apart in the width direction. When assembled into the jet head 1, the lower surface of the oscillator main body 6a comes into contact with the joint inclined portion 2g described above. Furthermore, because the joint inclined portion 2g is located between the pair of guide ribs 6c, misalignment in the width direction between the oscillator 6 and the joint inclined portion 2g is suppressed.

[0031] As shown in FIG. 5, the oscillator holder 7 is cylindrical overall and includes a holder body 7a with a smaller diameter at the front end. A notch 7b is provided at the bottom of the holder body 7a, cutting the holder body 7a in the front-to-rear direction. A concave bearing portion 7c is provided at the top of the rear end of the holder body 7a. The bearing portion 7c is a portion that receives the pair of shaft portions 6b described above, thereby supporting the oscillator 6 so that it can oscillate relative to the oscillator holder 7. When assembled into the jet head 1 as shown in FIGS. 1 and 2, the oscillator holder 7 is attached to the inside of the horizontally oriented cylindrical portion 5d while supporting the oscillator 6.

[0032] The nozzle 8 includes a cylindrical nozzle body 8a. A nozzle flange 8b extending outward from the outer circumferential surface of the nozzle body 8a is provided in the longitudinal center of the nozzle body 8a. When assembled into the jet head 1 as shown in FIGS. 1 and 2, the nozzle 8 is attached to the inside of the horizontally oriented cylindrical portion 5d. A front wall portion 8c extending inward from the inner circumferential surface of the nozzle body 8a is provided at the front end of the nozzle body 8a. A circular opening 8d is provided in the center of the front wall portion 8c and opens in a direction intersecting the axis O (in this embodiment, it opens in the horizontal direction, intersecting the axis O extending in the vertical direction).

[0033] In this embodiment, the head spring 9 is a coil spring made of metal wire wound in a spiral shape. The elastic force of the head spring 9 is set to be smaller than that of the pump spring 63, so that when the head body 5 is pressed, the head spring 9 can bend before the pump spring 63, as will be described later. The head spring 9 is omitted from Figure 2.

[0034] As shown in Figures 1 and 2, the base end member 10 is generally cylindrical and includes a base end body 10a with a smaller diameter at the front end. The rear end surface of the base end body 10a slopes upward from the front to the rear. Hereinafter, this rear end surface will be referred to as the pin inclined portion 10b. A stopper 10c extending toward the rear is provided above the pin inclined portion 10b. Furthermore, an annular pin seal portion 10d is provided at the longitudinal center of the base end body 10a, extending outward from the outer circumferential surface of the base end body 10a and then toward the rear. The pin seal portion 10d is elastically deformable so that its tip approaches the outer circumferential surface of the base end body 10a. When assembled into the jet head 1, the base end member 10 is inserted into the nozzle 8 and the oscillator holder 7, and the tip of the pin seal portion 10d contacts the inner circumferential surface of the nozzle 8. When assembled into the jet head 1, the tip of the oscillator 6 comes into contact with the pin inclined portion 10b.

[0035] The distal end member 11 includes a cylindrical distal end body 11a with a closed front end. The distal end of the proximal end body 10a is inserted into the rear end of the distal end body 11a and fitted and held by the proximal end body 10a, thereby assembling the proximal end member 10 and the distal end member 11 as the shutoff pin 4. Herein, the passage defined inside the proximal end member 10 and the passage defined inside the distal end member 11 are collectively referred to as the ejection passage T3. As shown in FIGS. 1 and 2, the front end of the distal end body 11a is expanded in diameter so that the outer circumferential surface of the distal end body 11a bulges outward. Hereinafter, this expanded diameter portion will be referred to as the pin expanded diameter portion 11b. The lower surface of the distal end body 11a is provided with an ejection port 11c that penetrates the distal end body 11a and communicates with the ejection passage T3, serving as the outlet of the ejection passage T3.

[0036] When assembled into the jet head 1, the head spring 9 is positioned inside the nozzle 8, between the front wall portion 8c and the base of the pin seal portion 10d. This biases the shutoff pin 4 from the front to the rear. FIG. 1 shows the shutoff pin 4 moved rearward by the head spring 9. Hereinafter, the position of the head spring 9 shown in FIG. 1 will be referred to as the retracted position. When the head spring 9 moves to the retracted position, the jet outlet 11c is located inside the opening 8d (rearward of the opening 8d). Note that the shutoff pin 4 also moves forward, compressing the head spring 9, as shown in FIGS. 6 and 7. Hereinafter, the position of the head spring 9 shown in FIGS. 6 and 7 will be referred to as the advanced position. When the head spring 9 moves to the advanced position, the jet outlet 11c is located outside the opening 8d (forward of the opening 8d), and the jet outlet 11c is exposed to the outside.

[0037] Although details will be described later, in this embodiment, the joint tilt portion 2g, the swinging body 6, and the pin tilt portion 10b are used to move the shut-off pin 4 from the retracted position to the advanced position. That is, in this embodiment, the "moving mechanism" in this specification and the like corresponds to the joint tilt portion 2g, the swinging body 6, and the pin tilt portion 10b.

[0038] To eject the contents from the ejection head 1 configured as above, the head body 5 is pressed downward from the state shown in Figure 1. Here, the joint 2 is connected to the stem 58a, which is biased upward by the pump spring 63, so that the head body 5 first moves downward relative to the joint 2 as shown in Figure 6. The head body 5 is provided with a swinging body 6 and a swinging body holder 7 that swingably supports the swinging body 6. Because the swinging body 6 is in contact with the joint inclined portion 2g, when the head body 5 moves downward relative to the joint 2, the swinging body 6 swings relative to the joint inclined portion 2g. Here, because the tip of the swinging body 6 is in contact with the pin inclined portion 10b, when the swinging body 6 swings, the shut-off pin 4 moves to the forward position while compressing the head spring 9, and the ejection port 11c is exposed to the outside. Furthermore, since a stopper 10c is provided above the pin inclined portion 10b, the swinging body 6 does not swing excessively, and therefore the shutoff pin 4 does not move forward excessively.

[0039] When the head body 5 is further pressed downward, the lower end of the connecting tube portion 5a contacts the upper surface of the upper wall portion 2b as shown in FIG. 7, and the joint 2 moves downward along with the head body 5. Therefore, the stem 58a, to which the joint 2 is connected, is pressed downward while compressing the pump spring 63 via the upper holder 62. As the stem 58a is pressed downward, the bottom portion 56b also descends via the connecting tube 56a, releasing the liquid-tight contact between the upper surface of the bottom portion 56b and the lower portion of the inner sliding piece 57c. When the head body 5 is further pressed downward, the piston 57 descends along with the cylindrical member 58 and internal member 56, pressurizing the interior of the cylinder 53. As a result, the contents in the cylinder 53 pass through the communication port 56c, pass inside the connecting tube 56a and stem 58a, pass through the communication passage T1, the internal passage T2, and the ejection passage T3, and are ejected to the outside from the ejection port 11c. Inside the internal passage T2, the tip of the pin seal 10d contacts the inner circumferential surface of the nozzle 8, so the contents inside the internal passage T2 do not leak out from between the tip of the pin seal 10d and the inner circumferential surface of the nozzle 8. When the head body 5 is pressed and the piston 57 descends below the vent hole 53f, the storage space S1 communicates with the outside world via the vent hole 53f. As a result, even if the contents stored in the storage space S1 decrease, the inside of the container body 51 does not become negative pressure, and the container body 51 is prevented from being deformed or crushed.

[0040] As described above, with the spray head 1 of this embodiment, when the head body 5 is pressed downward to spray the contents, the shut-off pin 4 moves forward, allowing the user to easily see that the shut-off pin 4 has moved. In particular, the spray outlet 11c of this embodiment is located below the shut-off pin 4, which makes it less likely that the shut-off pin 4 will be hidden by the sprayed contents. Therefore, even when spraying opaque contents, for example, the advanced shut-off pin 4 can be easily seen.

[0041] Thereafter, when the pressure on the head body 5 is released, the stem 58a begins to rise due to the biasing force of the pump spring 63. Then, the upper surface of the bottom portion 56b and the lower portion of the inner sliding piece 57c come into liquid-tight contact again, and the piston 57 rises together with the internal member 56, reducing the pressure inside the cylinder 53. As a result, the valve body portion 54b moves away from the bottom wall portion 53a, opening the suction port 53d and allowing the contents in the container to be sucked into the cylinder 53 through the pipe 55.

[0042] Furthermore, when pressure on the head body 5 is released, the shutoff pin 4, which had moved to the forward position as shown in FIG. 7, moves to the retracted position as shown in FIG. 1 due to the biasing force of the head spring 9, and the ejection port 11c moves inside the opening 8d. Furthermore, the opening 8d is closed by the expanded pin diameter portion 11b of the shutoff pin 4, which makes it difficult for outside air to enter the inside of the opening 8d, effectively preventing the ejection port 11c from solidifying due to outside air. Furthermore, the user can easily see that the shutoff pin 4, which had moved forward when discharging the contents, has retracted by releasing the pressure on the head body 5, and can therefore understand the function of the ejection head 1, which is to prevent the contents from solidifying by the shutoff pin 4.

[0043] The movement mechanism of this embodiment, which is composed of the joint tilt portion 2g, the swinging body 6, and the pin tilt portion 10b, can move the shutoff pin 4 so that the amount of movement of the shutoff pin 4 when it moves from the retracted position to the advanced position is greater than the amount of downward movement required when the head main body 5 moves the shutoff pin 4 from the retracted position to the advanced position. Specifically, when the head main body 5 is moved downward by approximately 1.5 mm from the state shown in FIG. 1 to the state shown in FIG. 6, the shutoff pin 4 moves approximately 3.7 mm from the state shown in FIG. 1 to the state shown in FIG. 6. In order to make the amount of movement of the shutoff pin 4 greater than the amount of movement of the head main body 5, for example, the angle of the joint tilt portion 2g can be made closer to the horizontal direction (closer to a direction perpendicular to the axis O). In other words, the swinging body 6 in contact with the joint tilt portion 2g swings so as to move further forward as the angle of the joint tilt portion 2g approaches the horizontal direction, thereby allowing the shutoff pin 4 in contact with the tip of the swinging body 6 to move further forward. Another method for making the movement amount of the shutoff pin 4 greater than the movement amount of the head main body 5 is to make the angle of the pin inclined portion 10b closer to the horizontal direction (closer to a direction perpendicular to the axis O). That is, when the rocker 6 rocks and the tip of the rocker 6 moves upward, the pin inclined portion 10b that contacts the tip of the rocker 6 moves forward more as the angle of the pin inclined portion 10b approaches the horizontal direction, thereby increasing the movement amount of the shutoff pin 4. Also, to make the movement amount of the shutoff pin 4 greater than the movement amount of the head main body 5, the point where the rocker 6 contacts the joint inclined portion 2g may be positioned closer to directly below the center of the rocking of the rocker 6 (the center of the shaft portion 6b). In other words, the line connecting the center point of the rocking of the rocker 6 and the point where the rocker 6 contacts the joint inclined portion 2g may be made closer to the vertical direction (closer to a direction parallel to the axis O).In other words, as the line connecting the center point of the oscillation of the oscillating body 6 and the point where the oscillating body 6 contacts the joint inclined portion 2g approaches the vertical direction, the angle at which the oscillating body 6 oscillates when the head main body 5 is moved downward increases, and therefore the amount of movement of the shutoff pin 4 can be increased.

[0044] Although one embodiment of the present invention has been described above with reference to the drawings, this embodiment can be modified as appropriate.

[0045] For example, the above-described jet head 1 uses a metal head spring 9 to apply a biasing force to the shut-off pin 4, but it is also possible to use an elastic piece made of synthetic resin to apply a biasing force to the shut-off pin 4. Furthermore, in this embodiment, the opening 8d opens horizontally in a direction intersecting the axis O, and the head spring 9 also moves horizontally, but the opening direction of the opening 8d and the movement direction of the head spring 9 may be inclined relative to the horizontal direction.

[0046] The ejection head 1 can be attached not only to the pump-type dispenser 52 shown in the figure, but also to other types of pump-type dispensers, and can also be used in aerosol containers by appropriately modifying the shape, etc.

[0047] (Addendum) This specification discloses the following technology in one aspect. Note that the reference numerals described below correspond to the reference numerals in the accompanying drawings, but are presented as examples and are not intended to limit the invention of this application.

[0048] (Technology 1) a joint (2) having a connecting part (2a) connected to a stem (58a) of the container and a communication passage (T1) through which the contents ejected from the stem (58a) pass, the joint (2) moving together with the stem (58a); a head (3) attached to the joint (2) so as to be movable in a direction along the axis (O) of the stem (58a), the head (3) having an internal passage (T2) communicating with the communication passage (T1) and an opening (8d) opening in a direction intersecting the axis (O); a shut-off pin (4) which has a jet passage (T3) communicating with the internal passage (T2) and having a jet outlet (11c) at its outlet, and which moves between a retracted position where the jet outlet (11c) is located inside the opening (8d) and an advanced position where the jet outlet (11c) is located outside the opening (8d); The ejection head (1) is provided with a moving mechanism that moves the shut-off pin (4) from the retracted position to the advanced position when the head (3) is pressed.

[0049] This technology makes it easier for users to understand the function of the shut-off pin, which can prevent the contents from solidifying. In addition, when this function is communicated to users, the appeal of the spray head increases, allowing it to be differentiated from other products.

[0050] (Technology 2) The movement mechanism moves the shut-off pin (4) so ​​that the amount of movement of the shut-off pin (4) when it moves from the retracted position to the advanced position is greater than the amount of downward movement required when the head (3) moves the shut-off pin (4) from the retracted position to the advanced position.

[0051] This technology makes it easier for users to understand that the shut-off pin is moving, making it easier for users to understand the function of the shut-off pin, which can prevent the contents from solidifying.

[0052] (Technology 3) The moving mechanism includes: a joint inclined portion (2g) provided at an upper end of the joint (2) and inclined upward as it moves from the forward position to the backward position; a pin inclined portion (10b) provided at a rear end of the shutoff pin (4) and inclined upward as it moves from the forward position to the backward position; a swinging body (6) disposed in the internal passage (T2), swingable relative to the head (3), and in contact with the joint inclined portion (2g) and the pin inclined portion (10b); When the head (3) is pressed, the joint inclined portion (2g) causes the swinging body (6) to swing, thereby moving the shut-off pin (4) from the retracted position to the advanced position.

[0053] This technology makes the structure for moving the shut-off pin further forward more suitable for mass production, making it easier to realize the present invention.

[0054] (Technology 4) The jet head (1) according to technique 1, wherein the jet outlet (11c) is located below the shut-off pin (4).

[0055] This technology makes it less likely that the shut-off pin will be hidden by the ejected contents, so that even when ejecting opaque contents, the advanced shut-off pin can be easily seen.

[0056] Although one embodiment of the present invention has been described above, the present invention is not limited to this specific embodiment, and unless otherwise limited in the above description, various modifications and variations are possible within the spirit and scope of the present invention as defined in the claims. For example, the configurations of the above-described embodiment may be added or deleted as appropriate, and the configurations of one embodiment may be incorporated into other embodiments. Furthermore, the effects of the above-described embodiment are merely examples of the effects that can be obtained from the present invention. In other words, the effects of the present invention are not limited to the above-described effects, and additional effects may be obtained in addition to the above-described effects. [Explanation of symbols]

[0057] 1: Jet head 2: Joint 2a: Connection part 2b: Upper wall part 2c: Peripheral wall part 2d: Upper cylinder part 2e: Plate-shaped part 2F: Entrance 2g: Joint tilt part (movement mechanism) 3: Head 4:Shut-off pin 5: Head body 5a: Connecting tube part 5b: Head top wall 5c: Head outer wall 5d: Horizontally facing cylinder 5e: Inward protrusion 6: Oscillator (moving mechanism) 6a: Oscillator body 6b: Shaft part 6c: Guide rib 7: Oscillator holder 7a: Holder body 7b: Notch 7c: Bearing part 8: Nozzle 8a: Nozzle body 8b: Nozzle flange 8c: Front wall 8d: opening 9: Head spring 10: Base end member 10a: Base body 10b: Pin inclination part (movement mechanism) 10c:Stopper 10d: Pin seal part 11: Tip member 11a: Tip body 11b: Pin expansion part 11c: spout 50: Pump-equipped container 51: Container body 51a: Mouth 51b: Male thread 52: Pump type discharger 53: Cylinder 53a: Bottom wall part 53b: Cylinder wall part 53c: Flange wall 53d: Inlet 53e: Holding tube 53f: Ventilation hole 54: Valve member 54a: Base 54b: Valve body 54c: Connecting piece 55: Pipe 56: Internal parts 56a: Connecting tube 56b: Bottom 56c: Communication port 57: Piston 57a: Base 57b:Outer sliding piece 57c: Inner sliding piece 58: Cylindrical member 58a:Stem 58b: Expanded diameter part 59: Lower holder 59a: lower base 59b: Lower flange 60: Packing 61: Cap 61a: Ceiling wall 61b: Lower peripheral wall 61c: Upper peripheral wall 61d: Female thread 62: Upper holder 62a: Upper base 62b: Upper flange 63: Pump spring O: Axis line S1: Containment Space T1: Communication path T2: Internal passage T3:Gushing passage

Claims

1. a joint having a connection part connected to the stem of the container and a communication passage through which the contents ejected from the stem pass, the joint moving together with the stem; a head attached to the joint so as to be movable along the axis of the stem, the head having an internal passage communicating with the communication passage and an opening opening in a direction intersecting the axis; a shutoff pin having a jet passage communicating with the internal passage and having a jet outlet at its outlet, the shutoff pin moving between a retracted position where the jet outlet is located inside the opening and an advanced position where the jet outlet is located outside the opening; a movement mechanism that moves the shutoff pin from the retracted position to the advanced position when the head is pressed.

2. 2. The ejection head of claim 1, wherein the movement mechanism moves the shutoff pin so that the amount of movement of the shutoff pin when it moves from the retracted position to the advanced position is greater than the amount of downward movement required when the head moves the shutoff pin from the retracted position to the advanced position.

3. The moving mechanism includes: a joint inclined portion provided at an upper end of the joint and inclined upward as the joint moves from the forward position to the backward position; a pin inclined portion provided at a rear end of the shutoff pin and inclined upward as the shutoff pin moves from the forward position to the backward position; a swinging body disposed in the internal passage, swingable relative to the head, and in contact with the joint inclined portion and the pin inclined portion; 3. The jet head according to claim 2, wherein when the head is pressed, the joint inclined portion causes the swinging body to swing, moving the shut-off pin from the retracted position to the advanced position.

4. The jet head of claim 1 , wherein the jet outlet is located below the shut-off pin.

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