Trigger-type dispenser

Abstract

To provide a trigger-type discharger capable of preventing a content from sticking to the surroundings when not in use.SOLUTION: The trigger-type discharger comprises: a stem 5 which stands to be pushed down in an upward biasing state; a support arm 14 which is erected rear-upward on a rear side of the stem 5; a trigger member 20 which is projected to a front side of a swing shaft 19 arranged on an upper end side of the support arm 14 and in which an intermediate part 20b in a projecting direction is connected to a tip 6 of the stem 5 through a connection shaft 7; a rotary stopper 30 which has an engaging end 32 projected upward from a rotary shaft 36 engaged with the support arm 14 and engaged with the trigger member 20 to enable forward separation on the rear side of the stem 5; a cover lid 58 which closes an outlet 9 of a nozzle cylinder 8; and a lever mechanism 42 which is interposed between the cover lid 58 and the rotary stopper 30.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a trigger-type dispenser, and more particularly to a trigger-type dispenser for attachment to the mouth and neck of a container body. [Background technology]

[0002] One known dispenser of this type has a stem that stands up in an upwardly biased state, a support arm that stands upright behind the stem and rearward, and a trigger that protrudes forward from a swing axis at the upper end of the support arm, with the middle part of the trigger connected to the upper part of the stem, and a rotating stopper whose lower end is journaled on the support arm is interposed between the support arm and the trigger, and the locked state of the trigger is released by tilting the rotating stopper backward (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2009-131813 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been a need for a trigger-type dispenser that can be stored and carried in a bag, for example. However, when the trigger-type dispenser of Patent Document 1 is stored in a bag, there is a risk that the liquid remaining on the tip of the nozzle cylinder may adhere to the inside of the bag or other stored items.

[0005] A first object of the present invention is to provide a trigger-type dispenser that can cover the tip of the nozzle cylinder when not in use to prevent the contents from adhering to the surrounding area. A second object of the present invention is to provide a trigger-type dispenser that is easy to use and allows the trigger to be unlocked and the cover to be removed from the nozzle cylinder in a single action. [Means for solving the problem]

[0006] The first means includes a discharge pump 2 having a stem 5 that stands upright and can be pushed down in an upwardly biased state, and a nozzle cylinder 8 that projects forward from a tip end 6 of the stem 5; a support arm 14 erected upward and rearward on the rear side of the stem 5; a trigger member 20 that protrudes forward from a swing shaft 19 disposed on the upper end side of the support arm 14, and whose intermediate portion 20b in the protruding direction is linked to the tip end portion 6 of the stem 5 via a linking shaft 7; a rotation stopper (30) that protrudes upward from a rotation shaft (36) pivotally attached to the support arm (14) at the rear side of the stem (5) and has a locking end (32) that engages with the trigger member (20) so as to be disengageable forward; a cover lid 58 that closes the discharge port 9 of the nozzle cylinder 8; a lever mechanism 42 having a point of application A at the connection point with the cover lid 58, a fulcrum F at a pivotal part 44 supported on the tip end 6 of the stem 5 when viewed from the left and right direction, and a force point P behind the fulcrum F; a connecting piece 38 that connects the upper part of the rotation stopper 30 to the force point P, When the rotation stopper 30 is tilted forward, the force point P is pulled down via the connecting piece 38, causing the action point A to rise and the cover lid 58 to detach from the discharge port 9.

[0007] In this means, as shown in FIG. 1(A), the discharge port 9 of the nozzle cylinder 8 protruding forward from the tip end 6 of the stem 5 is closed by a cover lid 58. With this structure, when the trigger-type dispenser is stored inside a bag or the like, it is possible to prevent the liquid remaining at the tip of the nozzle cylinder 8 from adhering to the inside of the bag. In this means, the cover lid 58 is connected to a lever mechanism 42 that is linked to the rotation stopper 30. The lever mechanism 42 has a point of application A at the connection point with the cover lid 58, a fulcrum F at a pivotal part 44 that is supported on the tip 6 of the stem 5 when viewed from the left and right, and a force point P behind the fulcrum F. The force point P is connected to the upper part of the rotation stopper 30 via a connecting piece 38. According to this structure, as shown in FIGS. 4(A) to 4(C), the operation of opening the cover lid 58 and the operation of removing the rotation stopper 30 can be performed in one operation, which is convenient to use.

[0008] The second means includes the first means, and the pivotal portion 44 includes a pair of rigid side plates 48 extending downward from both left and right sides of the top portion 46 on both left and right sides of the tip portion 6 of the stem 5; These rigid side plates 48 have insertion holes 50 into which the linking shaft 7 can be fitted. The edge of the insertion hole 50 and the linking shaft 7 form the fulcrum portion F.

[0009] In this means, as shown in FIG. 1(A), the pivotal portion 44 has a pair of rigid side plates 48 extending downward from both the left and right sides of the top portion 46 on both the left and right sides of the tip portion 6 of the stem 5 . These rigid side plates 48 are provided with insertion holes 50 into which the linking shafts 7 can be fitted. The edge of the insertion hole 50 and the linking shaft 7 form the fulcrum portion F. According to this structure, the linking shaft 7 that links the trigger member 20 and the stem 5 can also be used as a support for the pivotal part of the lever mechanism, thereby simplifying the structure.

[0010] the third means includes the second means, and the lever mechanism 42 includes a first arm portion 52 that projects rearward from the pivotal portion 44 and is connected to the connecting piece 38, and a second arm portion 54 that projects forward from the pivotal portion 44 and is connected to the cover lid 58; The second arm portion 54 is formed as a rigid cover body having an inverted U-shaped cross section that covers the upper surface and the left and right side surfaces of the nozzle cylinder 8 .

[0011] In this means, the second arm portion 54 of the lever mechanism 42 is formed as a rigid cover body with an inverted U-shaped cross section that covers the top surface and the left and right side surfaces of the nozzle cylinder 8, as shown in FIG. 3(D). This structure prevents dust and dirt from adhering to the periphery of the nozzle cylinder during storage, making it hygienic, and also ensuring sufficient strength as a lever.

[0012] The fourth means includes the second means, and forms the upper half 50a of the insertion hole 50 in a tapered shape tapering toward the upper side, and the lower half 50b of the insertion hole 50 in an inclined groove shape extending from the upper front to the lower rear, and the linking shaft 7 is loosely fitted into the insertion hole 50 so that it can move between the one half 50a and the other half 50b by operating the rotation stopper.

[0013] In this means, as shown in Figure 3(B), the upper half 50a of the insertion hole 50 is formed in a tapered shape that tapers toward the upper side, and the lower half 50b of the insertion hole 50 is formed in an inclined groove shape that extends from the upper front to the lower rear. As shown in Figures 5(A) and 5(B), the connecting shaft 7 has a tapered upper half 50a and a lower half 50b that is a groove-like inclined downward and rearward, and is loosely fitted into the insertion hole 50 so that the connecting shaft 7 can move between the upper half 50a and the lower half 50b by operating the rotation stopper. According to this structure, when the rotation stopper is tilted forward, the second arm portion 54 can be displaced forward by a distance d2, as shown in FIG. 5(A). Therefore, the cover lid 58 can be reliably removed from the discharge port 9 of the nozzle cylinder 8.

[0014] The fifth means includes any one of the first means to the fourth means, and the connecting piece 38 is a rigid connecting piece having a first hinge h1 and a second hinge h2 at both ends thereof, which are parallel to each other in the left-right direction, and the rotation stopper 30 and the Lever mechanism 42 It was connected to the

[0015] In this embodiment, as shown in FIG. 3(A), the connecting piece 38 is a rigid connecting piece having a first hinge h1 and a second hinge h2 at both ends thereof, which are parallel to each other in the left-right direction. According to this structure, the movement of the rotation stopper 30 can be accurately transmitted to the lever mechanism 42, thereby allowing the lever mechanism 42 to operate reliably. The connecting piece 38 is integrally connected to the rotation stopper 30 via a first hinge h1 and to the cover member 40 via a second hinge h2. This allows the cover lid 58 to be released with a simple operation without increasing the number of parts. [Effects of the Invention]

[0016] According to the present invention, the tip of the nozzle cylinder can be covered when not in use to prevent the contents from adhering to the surrounding area. Furthermore, according to the present invention, the trigger can be unlocked and the cover lid can be removed from the nozzle cylinder in a single action, making it easy to use. [Brief explanation of the drawings]

[0017] [Figure 1] 1A and 1B show the overall configuration of a trigger-type dispenser according to an embodiment of the present invention, with FIG. 1A being a side view of the configuration and FIG. 1B being a plan view. [Figure 2] This shows the cross-sectional structure of the trigger-type dispenser shown in Figure 1, where Figure (A) is a cross-sectional view seen from the side, and Figure (B) is an enlarged cross-sectional view seen from the II(B)-II(B) direction of Figure 1(B). [Figure 3]The main components of the trigger-type dispenser (integrated rotating stopper, connecting piece, and cover member) are structured as shown in Figure 1, where (A) is a plan view of the component, (B) is a side view, (C) is a front view of the front end of the component, and (D) is a rear view of the component. [Figure 4] This is an explanatory diagram of the operation of the main parts shown in Figure 3, where (A) shows the rotation stopper in an upright position as viewed from the side, (B) shows the rotation stopper tilted forward, and (C) shows the rotation stopper tilted further back. [Figure 5] 5A and 5B are explanatory diagrams illustrating the movement of some of the main components shown in FIG. 3, where FIG. 5A shows a partially enlarged view of the state corresponding to FIG. 4A, and FIG. 5A shows a partially enlarged view of the state corresponding to FIG. 4B. BEST MODE FOR CARRYING OUT THE INVENTION

[0018] 1 to 5 show a trigger-type dispenser according to an embodiment of the present invention. This dispenser includes a dispenser pump 2, a mounting member 10, a trigger member 20, a rotation stopper 30, a connecting piece 38, and a cover member 40. Each of these members can be made of, for example, synthetic resin or metal. The rotation stopper 30, the connecting piece 38 and the cover member 40 are integrally molded as one component from a synthetic resin material, but they may also be molded as separate bodies.

[0019] The discharge pump 2 has a conventionally known configuration, and in the illustrated example, is inserted into the container body 100 and has a suction pipe 4 hanging down from the lower end side of a cylinder 3, and has a stem 5 that is biased upward and can be raised and lowered from a piston (not shown) that slides in the cylinder 3. A nozzle cylinder 8 projects forward from the tip end 6 (upper end) of this stem 5. For ease of explanation, the right side of FIG. 1(A) will be referred to as the "rear", the left side of FIG. 1(A) as the "front", and the directions perpendicular to the paper surface as the "left and right". The discharge pump 2 is configured so that, by the up and down movement of the stem 5 relative to the cylinder 3, the liquid in the container body 100 can be sucked into the cylinder 3 and discharged from the discharge port 9 of the nozzle cylinder 8. These structures can be modified as appropriate. As shown in FIG. 1(A), a pair of left and right linking shafts 7, each having a circular shape in side view, protrudes laterally (in the left-right direction) from the tip end 6 of the stem 5.

[0020] The mounting member 10 is also a conventionally known member, and serves to mount the discharge pump 2 to the mouth and neck portion of the container body 100. The mounting member 10 in the illustrated example has a flange wall portion 12 protruding inward from the upper end of a mounting cylinder 11 that fits onto the outer surface of the mouth and neck portion, and the cylinder 3 is provided so as to hang down from the back surface of this flange wall portion 12. Furthermore, a small diameter cylindrical portion 13b stands up from the inner periphery of the flange wall portion 12, and guides the rising and falling of the stem 5 via a large diameter cylindrical portion 13a. A support arm 14 for supporting the trigger member 20 stands obliquely upward and rearward from an appropriate position on the mounting member 10 (the large diameter cylindrical portion 13a in the illustrated example), positioned rearward of the stem 5. The support arm 14 in the illustrated example is formed by a pair of side wall portions 16 protruding from both the left and right ends of a single rear wall portion 15. Shaft holes 17 for attaching a rotating shaft 36 (described later) are formed in appropriate positions of the side wall portions 16 (in the illustrated example, positions near a swing shaft 19 (described later)). In the illustrated example, slits 18 are formed above each shaft hole 17 for introducing the rotating shaft 36 into the shaft hole.

[0021] The trigger member 20 is pivotable about a pivot shaft 19 disposed at the upper end of the support arm 14 and protrudes forward from the pivot shaft 19 . In this embodiment, the trigger member 20 has a base 20a pivotally attached to the swing shaft 19, an intermediate portion 20b extending horizontally forward, and a tip portion 20c serving as a grip portion extending forward and downward. The intermediate portion 20b is connected to the tip end 6 of the stem 5 via the connecting shaft 7, so that pulling the trigger member 20 causes the stem 5 to descend. In this specification, the term "linked" means that two parts are connected or continuous so that some force can be transmitted between them. The trigger member 20 shown in the figure has a pair of left and right side plates 24 that protrude inward (toward the discharge pump 2) from both the left and right sides of a main plate 22. In the middle portion 20b of the trigger member 20, a push-down portion 26 that also serves as a bearing for the linkage shaft 7 is formed on the inner surface of each side plate 24. As shown in FIG. 2(B), this push-down portion 26 is formed as a semicircular recess (the upper half of a circle) when viewed from the side. However, these shapes can be modified as appropriate.

[0022] The rotation stopper 30 is releasably interposed between the support arm 14 and the trigger member 20 and serves to lock the trigger member 20. As shown in Figure 1(A), when viewed from the side (left and right), the rotation stopper 30 has a rotation axis 36 supported by the shaft hole 17 of the support arm 14 on the rear side of the stem 5, and protrudes upward from this rotation axis 36. An engaging end 32 is formed at the top of the rotation stopper 30 and abuts against an appropriate position of the trigger member 20 (the lower edges of the pair of side plate portions 24 in the illustrated example) so as to be able to be released forward. In the illustrated example, as shown in Figure 3(C), a pair of left and right leg plates 35 are suspended from the underside of the long locking plate portion 32, which is the locking end portion, and the rotating shaft 36 is installed between these leg plates 35. A pair of knobs 34 are attached to the left and right sides of the locking plate 32. 3(A), a protruding portion 33 that is wide in the left-right direction when viewed from above is formed in the front half of the upper surface of the locking plate portion 32 as a connecting portion with the connecting piece 38. By providing this protruding portion 33, the position of a first hinge h1 (described below) can be made higher than the upper surface of the locking plate portion 32. This allows the width direction length of the connecting piece 38 and the inclination angle with respect to the horizontal direction to be appropriately adjusted.

[0023] The connecting piece 38 has the role of transmitting the movement of the rotation stopper 30 to the lever mechanism 42 side. In this specification, the term "connected" means that the two are morphologically connected. 3(A), the connecting piece 38 of this embodiment is a rectangular (or strip-shaped) rigid piece that is long in the left-right direction when viewed from above. On both short sides of this connecting piece 38, a first hinge h1 that is continuous with the upper part of the rotation stopper 30 (the upper end of the rear surface of the raised portion 33 in the illustrated example) and a second hinge h2 that is continuous with a first arm portion 52 of the lever mechanism 42, which will be described later, are formed. The first hinge h1 and the second hinge h2 are parallel to each other. In the initial state shown in Fig. 1(A), the second hinge h2 is positioned higher than the first hinge h1, and the entire connecting piece 38 is inclined relative to the horizontal direction when viewed from the side. In the illustrated example, in the initial state, the second hinge h2 abuts against the lower surface of the main plate portion 22 at the intermediate portion 20b.

[0024] The cover member 40 has the role of covering the entire nozzle cylinder 8 including the discharge port 9, and also functions to open and close the discharge port 9 in conjunction with the movement (swing) of the rotation stopper 30. The cover member 40 in the illustrated example is formed to cover the discharge port 9 of the nozzle cylinder 8 and the upper and left and right side portions of the peripheral surface of the nozzle cylinder 8, but it is sufficient if it at least closes the discharge port 9. The cover member 40 of this embodiment is made up of a cover lid 58 that closes the discharge port 9 of the nozzle cylinder 8, and a lever mechanism 42 for opening and closing the cover lid 58.

[0025] The lever mechanism 42 has a pivotal part 44 supported on the tip 6 of the stem 5, a first arm part 52 protruding rearward from the pivotal part 44 and connected to the connecting piece 38, and a second arm part 54 protruding forward from the pivotal part 44 and connected to the cover lid 58. A fulcrum portion F is provided on the pivotal portion 44, the rear end of the first arm portion 52 (the end connected to the connecting piece 38) is the force point portion P, and the front end of the second arm portion 54 (the end connected to the cover lid) is the load point portion A. In this way, by tilting the rotation stopper 30 forward, the force point P is pulled down via the connecting piece 38, causing the action point A to rise and the cover lid 58 to detach from the discharge port 9. Furthermore, by the reverse operation (returning the device from the vertical state), the force point P rises and the action point A falls, so that the discharge port 9 is closed. In this embodiment, the linking shaft 7 and the edge of the insertion hole 50 described below form the fulcrum F, but the fulcrum F may have any structure as long as it can support the lever mechanism 42.

[0026] As shown in Figure 3(A), the pivotal part 44 is a part where a pair of rigid side plates 48 having insertion holes 50 for fitting (loosely fitting) the connecting shaft 7 are suspended from both the left and right sides of the top 46. In this specification, the term "key part" refers to a key part of a lever mechanism. The term "rigidity" means that the part has enough strength to function as a lever. In FIG. 1(A), the apex 46 is located above the tip 6 of the stem 5. The cover member 40 is assembled to the stem 5 by fitting (loosely fitting in the illustrated example) the connecting shafts 7 on both sides of the tip 6 into the insertion holes 50 of a pair of rigid side plates 48 that hang down from both the left and right sides of the top 46. In this configuration, as shown in FIG. 4(B), the linking shaft 7 abuts against an appropriate position on the edge of the insertion hole 50 (for example, a first inclined side S2 described later), thereby functioning as a fulcrum F.

[0027] In the illustrated example, the edge of the insertion hole 50 includes a vertical side S1, a first inclined side S2, a second inclined side S3, and an arc-shaped side S4, as shown in FIG. 2(B). An upper half 50a of the insertion hole 50 has a tapered shape tapering toward the upper side, and is formed between the vertical side S1 and the first inclined side S2. On the other hand, the lower half 50b of the insertion hole 50 is an inclined groove extending from the upper front to the lower rear, and is formed between a first inclined side S2 and a second inclined side S3. The linking shaft 7 is formed so that it can move between the one half 50a and the other half 50b by operating the rotation stopper, as shown in Figures 5(A) and 5(B). The reason for this configuration will be explained with reference to FIGS. First, in the initial state shown in Figure 5(A), if there is a gap d1 between the linking shaft 7 and the arc-shaped side S4 of the insertion hole 50, there is room for the linking shaft 7 to move within the insertion hole 50 depending on the size of the gap d1. However, in reality, the linking shaft 7 is an immovable part fixed to the stem 5, so it should be understood that when viewed from the perspective of the entire dispenser, as shown in Figure 5(B), there is room for the cover member 40 including the pivotal part 44 to move forward a certain distance d2 corresponding to the gap d1. 4(A) to 4(C) show the movement of the connecting piece 38 and the cover member 40 when the rotation stopper 30 is tilted forward. 4(A), the second hinge h2 of the connecting piece 38 abuts against the underside of the main plate portion 22, and therefore attempts to slide forward using this underside as a guide surface G. Note that the guide surface G is an example of a guide means for directing the orientation of the second hinge h2 in the horizontal direction, and its structure can be modified as appropriate. As the second hinge h2 slides along the guide surface G, the connecting piece 38 applies a pressing force f1 to the cover member 40 in the forward direction. As a result, as shown in FIG. 5(B), the cover member 40 moves forward (diagonally forward) accompanied by rotation in the initial stage of the operation of tilting the rotation stopper 30 forward. This prevents the cover lid 58 from rubbing against the front end surface of the nozzle cylinder 8 and interfering with the rotational movement, and allows for smooth removal. In particular, in the illustrated example, the structure in which the hook portion 60 is attached to the cover lid 58 can reduce the inconvenience of the hook portion 60 getting caught on the lower end of the nozzle cylinder 8 and interfering with the rotational movement. Here, the above structure can be modified as appropriate. The shape and size of the insertion hole 50 can be changed as appropriate. For example, the shape of the insertion hole 50 may be a perfect circle that fits closely to the outer periphery of the linking shaft 7.

[0028] In this embodiment, the first arm portion 52 is provided as a horizontal plate that protrudes rearward from the top 46 of the pivotal portion 44, and its rear end is connected to the connecting piece 38 as a force point P. However, the shape and arrangement of the first arm portion 52 can be changed as appropriate.

[0029] The second arm portion 54 is formed as a rigid cover body having an inverted U-shaped cross section that covers the upper surface and the left and right side surfaces of the nozzle cylinder 8 . An opening O is formed on the lower side of the second arm portion 54 to enable attachment to and detachment from the nozzle cylinder 8. In the illustrated example, as shown in FIG. 3(D), the second arm portion 54 is formed by extending a pair of left and right side wall portions 56 in an arc shape from an upper wall portion 55. As shown in FIG. 1A, the upper wall portion 55 is slightly inclined relative to the top portion 46 of the pivotal portion 44 when viewed from the side, and the entire second arm portion 54 is gently inclined upward and forward.

[0030] The cover lid 58 has a role of closing the discharge port 9 of the nozzle cylinder 8, and is connected to the second arm portion . In the illustrated example, a hook portion 60 that engages with the lower surface of the nozzle cylinder 8 is attached to the lower end of the cover lid 58. However, this structure can be modified as appropriate.

[0031] In the above configuration, the nozzle cylinder 8 is covered by the cover member 40 in the state shown in Figure 4(A), so that dust and dirt can be prevented from adhering to the nozzle cylinder. This is particularly beneficial when used for applications related to hair or skin. Furthermore, the discharge port 9 of the nozzle cylinder 8 is covered with a cover lid 58, so even if the dispenser is placed in a bag or the like, it is possible to prevent the liquid remaining in the nozzle cylinder 8 from adhering to the inside of the bag or other stored items. Furthermore, a hook portion 60 that engages with the underside of the nozzle tube 8 is attached to the lower end of the cover lid 58, so that the cover lid 58 is less likely to come into contact with items stored in a bag or the like and come off the discharge port 9. 4(B), the connecting piece 38 slides along the lower surface of the main plate 22 as a guide surface G, and applies a forward pushing force f1 to the cover member 40, causing the cover member 40 to move diagonally forward. As a result, the hook portion separates from the lower end of the nozzle cylinder 8 in an upward and forward direction, and the cover lid 58 smoothly comes off the discharge port 9 of the nozzle cylinder 8. When the rotation stopper 30 is further tilted, the downward force f2 acting on the force point P (the location where the second hinge is formed) becomes stronger, as shown in Figure 4(C). This causes the cover member 40 to rotate around the fulcrum F, and the cover lid 58 rises, so that the discharge port 9 is completely opened. In this state, the trigger member 20 is pulled to cause the liquid to be sprayed from the discharge port 9. After the liquid ejection operation is completed, the rotary stopper 30 is returned from the forward tilted position to the upright position, and the cover member 40 rotates in the opposite direction to cover the outer surface of the nozzle cylinder 8, and the cover lid 58 closes the discharge port 9.

[0032] According to the above-described configuration and operation, a cover lid 58 is provided to close the discharge port 9 of the nozzle tube 8, and the cover lid 58 is connected to a lever mechanism 42 that is linked to the rotation stopper 30. Therefore, when the trigger-type dispenser is stored inside a bag or the like, it is possible to prevent the remaining liquid contents at the tip of the nozzle tube 8 from adhering to the inside of the bag, and the lid can be easily opened and closed, making it easy to use. Furthermore, the rigid side plate 48 of the pivotal part 44 has an insertion hole 50 into which the linking shaft 7 for linking the tip 6 of the stem 5 to the trigger member 20 can be fitted, thereby simplifying the configuration. In addition, the second arm portion 54 of the lever mechanism 42 is formed on a rigid cover body with an inverted U-shaped cross section that covers the top surface and left and right side surfaces of the nozzle cylinder 8, making it hygienic and ensuring sufficient strength as a lever. Furthermore, by operating the rotation stopper, the connecting shaft 7 can move between the tapered upper half 50a of the insertion hole 50 and the lower half 50b, which is a groove-like inclined downward and rearward, so that the nozzle cylinder 8 can be reliably detached from the discharge port 9 with the cover lid 58. The connecting piece 38 is integrally connected to the rotation stopper 30 and the cover member 40 via the first hinge h1 and the second hinge h2, so the number of parts does not increase. [Explanation of symbols]

[0033] 2...Discharge pump 3...Cylinder 4...Suction pipe 5...Stem 6...Tip 7...Connecting shaft 8...Nozzle cylinder 9...Discharge port 10: Mounting member 11: Mounting tube 12: Flange wall portion 13a: Large diameter tube portion 13b...small diameter cylindrical portion 14...support arm 15...Rear wall portion 16...Side wall portion 17...Axial hole 18...Slit 19...Oscillating shaft 20...Trigger member 20a...Base portion 20b...Middle portion 20c...Tip portion 22...Main plate part 23...Through hole 24...Side plate part 26...Bearing part (pushing down part) 30... Rotation stopper 32... Locking disc portion (locking end portion) 33... Raised portion 34... Knob portion 35... Leg plate 36... Rotating shaft (shaft rod) 38... Connecting piece 40...Cover member 42...Lever mechanism 44...Pivot part 46...Top part 48...Rigid side plate 50...Insertion hole 50a...One half 50b...Other half 52...First arm part 54... Second arm portion 55... Upper wall portion 56... Side wall portion 58... Cover lid 60...Hook portion 100...Container body A...Point of application F...Fulcrum d1...Gap, d2...Distance G...Guiding means (guide surface) h1...First hinge h2...Second hinge O...Opening P...Force point S1...Vertical piece S2…first slope side S3…second slope side S4…arc-shaped side

Claims

1. a discharge pump (2) having a stem (5) that stands upright and can be pushed down in an upwardly biased state, and a nozzle cylinder (8) that projects forward from a tip end (6) of the stem (5); a support arm (14) erected rearward and upward on the rear side of the stem (5); a trigger member (20) that protrudes forward from a swing shaft (19) disposed on the upper end side of the support arm (14), and whose intermediate portion (20b) in the protruding direction is linked to the tip end portion (6) of the stem (5) via a linking shaft (7); a rotation stopper (30) that protrudes upward from a rotation shaft (36) that is pivotally attached to the support arm (14) at the rear side of the stem (5) and has a locking end (32) that engages with the trigger member (20) so as to be able to be released forward; a cover lid (58) for closing the discharge port (9) of the nozzle cylinder (8); a lever mechanism (42) having a point of action (A) at the connection point with the cover lid (58), a pivotal part (44) supported on the tip end (6) of the stem (5) when viewed from the left and right, a fulcrum part (F) provided at the pivotal part (44), and a force point (P) behind the fulcrum part (F); a connecting piece (38) that connects the upper part of the rotation stopper (30) to the force point (P), A trigger-type dispenser characterized in that, when the rotation stopper (30) is tilted forward, the force point portion (P) is pulled down via the connecting piece (38), causing the action point portion (A) to rise and the cover lid (58) to detach from the discharge port (9).

2. The pivotal portion (44) has a pair of rigid side plates (48) extending downward from both the left and right sides of the top (46) on both the left and right sides of the tip (6) of the stem (5), These rigid side plates (48) have insertion holes (50) into which the linking shaft (7) can be fitted.

2. The trigger-type dispenser according to claim 1, wherein the fulcrum (F) is formed by the edge of the insertion hole (50) and the connecting shaft (7).

3. The lever mechanism (42) has a first arm portion (52) that protrudes rearward from the pivotal portion (44) and is connected to the connecting piece (38), and a second arm portion (54) that protrudes forward from the pivotal portion (44) and is connected to the cover lid (58), 3. The trigger-type dispenser according to claim 2, wherein the second arm portion (54) is formed as a rigid cover body having an inverted U-shaped cross section that covers the upper surface and the left and right side surfaces of the nozzle cylinder (8).

4. 3. The trigger-type dispenser according to claim 2, wherein the upper half (50a) of the insertion hole (50) is formed in a tapered shape tapering upward, and the lower half (50b) of the insertion hole (50) is formed in an inclined groove shape extending from the upper front to the lower rear, and the connecting shaft (7) is loosely fitted into the insertion hole (50) so that it can move between the one half (50a) and the other half (50b) by operating the rotation stopper.

5. The trigger-type dispenser according to any one of claims 1 to 4, wherein the connecting piece (38) is a rigid connecting piece having a first hinge (h1) and a second hinge (h2) at both ends thereof that are parallel to each other in the left-right direction, and is integrally connected to the rotation stopper (30) and the lever mechanism (42) via these hinges.

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