Trigger type discharger

Abstract

To provide a trigger type discharger capable of preventing liquid from leaking as external force is applied to a side face.SOLUTION: A trigger type discharger comprises: a discharger body 2 which comprises a body 6 having a pump mechanism 12 for sucking and pressurizing liquid in a container body 100 to discharge it from a discharge port 27, and an operation lever 28 engaged operably with this body 6 and linked with the pump mechanism 12; a shroud 40 which covers at least a side face part S of the body 6; and a cover member 50 which is fitted to the operation lever 28. The cover member 50 has deformation prevention means A which is interposed between the operation lever 28 and shroud 40 to resist deformation of the operation lever 28 due to external lateral force. The deformation prevention means A includes a sub deformation prevention plate a2 interposed between a spring body 22 and the shroud 40, or a main deformation prevention plate a1 interposed between a cylinder part 14 of the pump mechanism 12 and the shroud 40.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a trigger-type dispenser. [Background technology]

[0002] Conventionally, a known device has a body with a pump mechanism that sucks in liquid from the container, pressurizes it, and discharges it from a discharge port, and an operating lever journaled on the side of the body is linked to the piston of the pump mechanism, and the body is covered with a shroud (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3839163 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, when consumers purchase trigger-type dispensers from websites (such as e-commerce sites) on the Internet, the website often wraps the entire dispenser before sending it to the consumer. In the configuration of Patent Document 1, due to the wrapping, a load is continuously applied in the lateral direction to the operating lever during product transportation, which may cause the piston to become misaligned via the operating lever, which may cause the seal between the piston and cylinder to break and result in liquid leakage.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a trigger-type dispenser that can prevent liquid leakage due to the application of external force to the side surface. [Means for solving the problem]

[0006] The first means comprises a body 6 having a pump mechanism 12 for sucking in the liquid in the container body 100, pressurizing it, and discharging it from a discharge port 27, and a discharge device main body 2 having an operating lever 28 operably engaged with the body 6 and linked to a piston 16 of the pump mechanism 12; a shroud 40 covering at least the side surface S of the body 6; a cover member 50 attached to the operating lever 28, This cover member 50 is disposed between the operating lever 28 and the shroud 40 when viewed from the opening direction of the discharge port 27, and has a deformation prevention means A that resists deformation of the operating lever 28 due to an external force from the side X.

[0007] In this means, as shown in FIG. 1(A), in a trigger-type dispenser of the type in which an operating lever 28 is operably engaged with a body 6 having a pump mechanism 12 and a shroud 40 is provided to cover the body 6, a cover member 50 is attached to the operating lever 28. The cover member 50 is disposed between the operating lever 28 and the shroud 40 when viewed from the opening direction of the discharge port 27, and has a deformation prevention means A that resists deformation of the operating lever 28 due to external forces from the side. This structure can prevent the piston 16 from being misaligned due to deformation of the operating lever 28, thereby reducing the risk of liquid leakage.

[0008] the second means includes the first means, and the cover member 50 includes a cover body 52 supported on the tip portion 28b of the operating lever 28; The deformation prevention means A includes a pair of main deformation prevention plates a1 that extend from both sides of the side X of the cover body 52 and sandwich the body 6 from the outside of the side X.

[0009] In this means, the deformation prevention means A includes a pair of main deformation prevention plates a1 that extend from both sides of the side X of the cover body 52 and sandwich the body 6 from the outside of the side X, as shown in Figures 2(B) and 2(C). This structure can sufficiently resist external forces from the side, and can more reliably reduce the risk of liquid leakage.

[0010] the third means includes the first means or the second means, and the cover member 50 includes a cover body 52 supported on the tip portion 28b of the operating lever 28; The deformation prevention means A is a part of the cover body 52 and includes a secondary deformation prevention plate a2 that is interposed in the gap g between the base 28a of the operating lever 28 and the shroud 40.

[0011] In this means, as shown in FIG. 1(B), the deformation prevention means A includes a secondary deformation prevention plate a2 interposed in the gap g between the base 28a of the operating lever 28 and the shroud 40. According to this structure, by reducing the gap g, the operating lever 28 is less likely to move even when an external force is applied from the side, and the risk of liquid leakage can be effectively reduced.

[0012] the fourth means includes the second means or the third means, and the cover body 52 is formed so as to be attached to the operating lever 28 from the tip of the operating lever 28 toward the pivot support portion P of the operating lever 28; Between the cover body 52 and the operating lever 28, a locking means B is formed to prevent the operating lever 28 from being pulled out in the forward direction.

[0013] In this means, as shown in FIG. 1(A), a locking means B is formed between the cover body 52 and the operating lever 28 to prevent the operating lever 28 from being pulled out in the forward direction. This structure can prevent the piston 16 from being misaligned due to the cover member 50 accidentally falling off. The cover body 52 is formed so that it can be attached to the operating lever 28 from the tip of the operating lever 28 toward the pivot support portion P of the operating lever 28 . According to this structure, the cover member 50 can be attached after the dispenser body 2 has been assembled, and there are no restrictions on the assembly process.

[0014] The fifth means includes the second means or the third means, and a stopper 80 that is interposed between the cover member 50 and the cylinder portion 14 and restricts the pulling operation of the operating lever 28 is integrally molded with the cover member 50 via a breaking portion 88.

[0015] In this means, as shown in FIG. 4(B), a stopper 80 that is interposed between the cover member 50 and the cylinder portion 14 and that restricts the pulling operation of the operating lever 28 is integrally molded with the cover member 50 via a breaking portion 88. This structure allows the number of components to be reduced. [Effects of the Invention]

[0016] According to the present invention, it is possible to prevent liquid leakage due to the application of an external force to the side surface of the shroud. [Brief explanation of the drawings]

[0017] [Figure 1] 1 shows the configuration of a trigger-type dispenser according to a first embodiment of the present invention, in which FIG. 1(A) is a partially cutaway side view, and FIG. 1(B) is a partially cutaway front view. [Figure 2] 2 shows the configuration of the cover member of the dispenser shown in FIG. 1, where FIG. 2(A) is a front view, FIG. 2(B) is a side view, FIG. 2(C) is a rear view, and FIG. 2(D) is a cross-sectional view seen from the side. [Figure 3] The structure and operation of the stopper of the dispenser shown in Figure 1 are shown, where Figure (A) is a view from the front, Figure (B) is a view from the side, and Figure (C) is an explanatory diagram of the process of pulling out from the locked position. [Figure 4] This figure shows the configuration of the cover member of the trigger-type dispenser according to the second embodiment of the present invention, where (A) is a side view, (B) is a front view of the stopper of the dispenser, and (C) is a side view of the stopper. [Figure 5] FIG. 10 is a cross-sectional side view of the configuration of a cover member of a trigger-type dispenser according to a third embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

[0018] 1 to 3 show a trigger-type dispenser according to a first embodiment of the present invention. As shown in FIG. 1(A), this trigger-type dispenser is composed of a dispenser main body 2, a shroud 40, a cover member 50, and a stopper 80. Each of these members can be made of, for example, synthetic resin or metal. In the following description, conventionally known matters will be explained briefly.

[0019] 1(A), the dispenser main body 2 is attached to the mouth and neck portion 102 of the container body 100 via the attachment cap 4, and includes a body 6 having a pump mechanism 12 that sucks in the liquid in the container body 100, pressurizes it, and discharges it from the discharge port 27 at the front opening. An operating lever 28 is operably engaged at an appropriate position of the body 6 (in the illustrated example, the horizontal flow path portion 10 described below) (for example, a base 28a of the operating lever 28 is journaled on the side surface portion S of the body 6), and the operating lever 28 is linked to the piston 16 of the pump mechanism 12. In this specification, for convenience of explanation, the left side of Fig. 1(A) will be referred to as the "front", the right side as the "rear", and the direction perpendicular to the paper surface as the left-right direction. The left-right direction may also be referred to as the "side X" direction (see Fig. 1(B)). In this specification, the portion of the operating lever 28 above the outline C of the lower edge of the shroud 40 shown in FIG. 1(A) is referred to as the base 28a, and the portion below it as the tip 28b. 1(A), the body 6 has a vertical flow path section 8, which is a vertical main cylindrical section, and a horizontal flow path section (injection cylinder section) 10 extending forward from the upper end side of the vertical flow path section 8. In addition, the pump mechanism 12 described above is provided below the horizontal flow path section 10, and is configured by inserting a piston 16 that is slidable in the front-to-rear direction into a cylinder section 14 that protrudes forward from the vertical flow path section 8. The piston 16 is connected to a tip 28b of an operating lever 28, which will be described later, via a pivotal connection (not shown), and is urged forward by a spring body 22, which will be described later. A nozzle member 26 having the discharge port 27 is attached to the front of the horizontal flow path portion 10 . By operating the operating lever 28, the pressure inside the cylinder section 14 is reduced, and the liquid in the container body 100 is sucked into the cylinder section 14 through a first check valve (not shown), and then discharged from the discharge port 27 through a second check valve (not shown).

[0020] In this embodiment, as shown in Fig. 1(A), an operating lever 28 is assembled to the horizontal flow path section 10 so as to be swingable in the front-to-rear direction, and a spring member 18 is attached to urge the operating lever 28 forward. This spring member 18 is engaged with (e.g., attached to) the upper surface of the horizontal flow path section 10 and has a mounting plate section 20 that is substantially inverted U-shaped when viewed from the front. A pair of left and right hook-shaped bearings 24 protrude from the rear of the mounting plate section 20, and a pair of left and right spring bodies (leaf springs) 22 protrude from the front of the mounting plate section 20. In the illustrated example, the bearing 24 supports a shaft portion 37 attached to a pair of left and right side plates 34 of the operating lever 28 described below, and the bearing 24 and the shaft portion 37 form a shaft support portion P. The illustrated spring body 22 is a leaf spring that is curved as a whole in the shape of an oval ring, as shown by the imaginary line in FIG. 1(A), and a protrusion 23 protruding from the lower end of this leaf spring is inserted into a pocket 36 at the upper end opening attached to the outer surface of the pair of side plates 34, thereby locking it in place. The configurations of these illustrated examples can be modified as appropriate.

[0021] In this embodiment, the operating lever 28 protrudes downward and forward from the support portion P and has a front plate 30 in the shape of a long, narrow strip of a fixed width and a pair of side plates 34 connected to both the left and right sides of the front plate 30. In this specification, the protruding direction of the operating lever 28 is referred to as the "forward direction." In the illustrated example, the pair of side plates 34 extend upward from the front plate 30, and these extensions 35 are disposed on both sides of the horizontal flow passage portion 10 and are pivotally supported. Near the upper end of the front panel 30, a void 32 is formed for inserting a claw portion 64 of a locking piece 60 (described later), and the edge of this void serves as a receiving portion 33 for receiving the claw portion 64. The locking piece 60 and the receiving portion 33 together form a locking means B for preventing the cover member 50 from accidentally slipping out in the forward direction. The cavity 32 may be a window opening at the top of the front panel 30 . The edge portion that is the receiving portion 33 can be formed in a straight line extending in the left-right direction as shown by the dotted line in FIG. 1(B). The width (front-rear direction) of the side plate 34 may be designed to gradually decrease toward the front, as shown in the illustrated example, or to be constant over the entire length in the protruding direction (front). This makes it easy to attach the cover member 50 later.

[0022] The shroud 40 is a member for covering the body 6 and is attached to the outside of the body 6 . In this embodiment, as shown in FIG. 1(B), the shroud 40 has a top wall 42 that covers the upper surface of the body 6, and a pair of side walls 44 that hang down from both sides of the top wall and cover the side surface S of the body. In the illustrated example, a gap g exists between the side wall 44 and the base 28a of the operating lever 28 (between the side wall 44 and the spring body 22 in the illustrated example), as shown in FIG. 1(B).

[0023] The cover member 50 is attached to the operating lever 28 and serves to resist external forces from the side and suppress deformation of the operating lever 28 (particularly deformation near the spring body). To ensure this function, the cover member 50 is disposed between the operating lever 28 and the shroud 40 when viewed from the opening direction (front) of the discharge port 27, and has a deformation prevention means A that resists deformation of the operating lever 28 due to external forces from the side. The deformation prevention means A can include a pair of main deformation prevention plates a1 (extension plate portions 68 described below) that hold both sides of an appropriate position of the body 6 (cylinder portion 14 in the illustrated example), and a pair of sub deformation prevention plates a2 that are disposed outside the spring body 22. These main and secondary deformation prevention plates each have their own functions to prevent deformation. In this specification, the word "main" in the main deformation prevention plate and the word "secondary" in the secondary deformation prevention plate are used solely to distinguish them from each other. In this embodiment, the main deformation prevention plate and the sub-deformation prevention plate are arranged at different locations on the cover body, but they may also be formed as plate-like members connected to each other.

[0024] 2(B), the cover member 50 is formed by a cover body 52 supported by the tip portion 28b of the operating lever 28, and a pair of extension plate portions 68 extending from the rear edges (portions shown by dotted lines in the figure) on both the left and right sides of the cover body 52. ​​The cover member 50 can be molded as a single unit using a die.

[0025] The cover body 52 is supported by the tip portion 28b of the operating lever 28, and covers the outer surface (particularly the side surface) of the operating lever 28. In this embodiment, as shown in Figure 2 (C), the cover body 52 is made up of a pair of vertically long left and right side covering plates 54 that entirely cover the side plates 34 of the operating lever 28, and a connecting member 58 that connects these side covering plates 54, and is formed so that it can be attached to the operating lever 28 from the tip of the operating lever 28 toward the pivotal support part P of the operating lever 28. This makes it easy to attach the cover member 50 after the assembly process of the dispenser main body 2. Therefore, there are no restrictions when assembling the dispenser main body 2, and the shape of the cover member 50 can be freely changed. In the illustrated example, the pair of side covering plywood 54 is formed by vertically extending lower half plate 57 from upper half plate 55 which are parallel to each other, via inwardly extending portion 56, as shown in FIG. 2(C). The distance L1 between the upper half plate portions 55 corresponds to the diameter of the cylinder portion 14, and the distance L2 between the lower half plate portions 57 corresponds to the left-right width of the operating lever 28. The distance L1 between the upper half plate portions 55 is equal to the distance between the outer surfaces of the pair of spring bodies 22 or slightly larger than that.

[0026] Of the upper half plate portion 55, a portion located near the spring body 22 (for example, a portion located above the contour line C when viewed from the side) is a secondary deformation prevention plate a2. When viewed from the front, the secondary deformation prevention plate a2 is disposed so as to be interposed between the operating lever 28 and the spring body 22 and the shroud 40. Therefore, when viewed from the side through the shroud 40, the secondary deformation prevention plate a2 covers the spring body 22 in the vicinity thereof, and is formed so as not to deform even when a load is applied in the lateral direction of the operating lever 28. According to this structure, by providing the secondary deformation prevention plate a2, it is possible to reduce the gap g between the operating lever 28 and the shroud 40 (almost to eliminate the gap in the illustrated example) as shown in FIG. 1(B). Therefore, there is less room for the operating lever 28 to move to the side X after a packing operation or the like. Therefore, misalignment of the piston 16 connected to the operating lever 28 is suppressed, and fluid leakage can be prevented.

[0027] As shown in Figures 2(C) and 2(D), the connecting material 58 is formed of a front connecting plate 58a that connects the front ends of the side covering plates 54, a lower connecting plate 58b that connects the lower ends of the side covering plates 54, and a rear connecting piece 58c that connects the rear ends of the side covering plates 54. The front connecting plate 58a covers the front plate 30 of the operating lever 28, and its lower end is connected to the lower connecting plate 58b. A generally inverted U-shaped slit 66 is drilled in the upper part of the front connecting plate 58a, and the plate portion inside this slit forms a flexible plate portion 62, and a claw portion 64 is attached to the upper rear surface of this flexible plate portion 62. The flexible plate portion 62 and the claw portion 64 form the locking piece 60. The claw portion 64 is positioned so as to be locked with the receiving portion 33 when the operating lever 28 is fitted into the cover member 50. The rear connecting piece 58c is formed in a beam-like portion that connects the side covering plates 54 at two positions, above and below. In the illustrated example, a die-cut hole 59 is formed in the front connecting plate 58a at a height corresponding to the rear connecting piece 58c.

[0028] The extension plate portions 68, which serve as the above-mentioned main deformation prevention plates a1, each extend rearward from the upper half plate portion 55 of the side covering plate 54. The pair of extension plate portions 68 are formed so as to be able to sandwich the cylinder portion 14 from the outside of the side X. This fixes the cover member 50 to the body 6, thereby effectively restricting deformation of the operating lever 28. The portions sandwiched by the main deformation prevention plates a1 and the structure (arrangement, shape, etc.) of the main deformation prevention plates a1 can be changed as appropriate.

[0029] The stopper 80 is disposed at a position (lock position) where it is interposed between the rear surfaces of the operating lever 28 and the cover member 50 and the front end surface of the cylinder portion 14, and is removable from this position. The stopper 80 of this embodiment is formed as a separate body from the cover member 50 . 3(A), the stopper 80 is configured by connecting an upwardly open C-shaped clamping portion 82 (with the cutout portion of the C facing upward) and a semicircular knob portion 84 via an intermediate connecting portion 83. The clamping portion 82 is formed to a size that allows it to clamp the piston 16. 3(C), with the clamping portion 82 clamped by the piston 16, the pinch portion 84 can be pinched and pulled downward as shown by the arrow, thereby allowing the piston 16 to be removed.

[0030] 1, the secondary deformation prevention plate a2 of the cover member 50 is interposed between the spring body 22 and the operating lever 28 and the shroud 40, and when viewed from the side X through the shroud 40, it covers the operating lever 28 near the spring body 22. As a result, even if an external force is applied from the side X, there is little gap g for the operating lever 28 to move near the spring body 22, so deformation of the operating lever 28 after packing can be suppressed. Furthermore, since the cylinder portion 14 of the body 6 is sandwiched between the pair of main deformation prevention plates a1 of the cover member 50, the cover member 50 can be fixed to the body 6, and deformation of the operating lever 28 can be further suppressed. Furthermore, when the cover member 50 is attached to the operating lever 28, the cover member 50 may be attached later from the tip of the operating lever 28 after the assembly process of the dispenser body 2. By this attachment operation, the locking piece 60 of the cover member 50 is locked to the receiving portion 33 of the operating lever 28, so that the cover member 50 will not unexpectedly fall off after attachment.

[0031] According to the above-mentioned configuration and operation, the deformation prevention means A is interposed between the operating lever 28 and the shroud 40, and resists deformation of the operating lever 28 due to external force from the side, thereby restricting misalignment of the piston 16 and reducing the risk of fluid leakage. The cover member 50 is fixed to the body 6 by sandwiching a part of the body 6 (cylinder portion 14) between a pair of main deformation prevention plates a1, thereby making it difficult for the operating lever 28 to move and appropriately preventing the misalignment. The cover member 50 can be attached to the operating lever 28 later, so there are no restrictions during the assembly process of the dispenser body 2, and when attached to the operating lever 28, the cover member 50 is locked to the operating lever 28 side, so that its unexpected detachment will not impair the deformation suppression function of the operating lever 28.

[0032] Other embodiments of the present invention will be described below, and in these descriptions, explanations of structures that are the same as those in the first embodiment will be omitted.

[0033] 4 shows a second embodiment of the present invention. In this embodiment, the stopper 80 is integrally formed with the cover member 50 via a breakable portion 88. This makes it possible to reduce the number of components. In the illustrated example, the stopper 80 is connected to the cover member 50 via a breakable portion 88 that also serves as a hinge, as shown in FIG. 4(B). This stopper 80 moves from the unlocked position shown in Figure 4(B) to the locked position shown in Figure 4(A) (a position where it is interposed between the operating lever 28 and cover member 50 and the cylinder portion 14) by rotating it around the breaking portion 88 as shown by the arrow in the same figure. When using the trigger-type dispenser, the stopper 80 is simply pulled straight down as shown by the arrow in FIG. 4(A), which breaks the breaking portion 88 and releases the stopper 80 from the locked position. The stopper 80 shown in the figure has a vertical plate-like knob 84 that protrudes upward from a C-shaped clamping portion 82 that opens downward, and a connecting arm 86 that is inverted L-shaped when viewed from the front and stands upright from the side of the clamping portion 82, with the tip of this connecting arm 86 connected to the upper half plate 55 of the side covering plate 54 of the cover member 50 via a breaking portion 88. Note that the breaking portion 88 may function only as a hinge and not necessarily be broken.

[0034] 5 shows a third embodiment of the present invention. In this embodiment, an extension 70 is provided extending from the cover body 52 beyond the operating lever 28 (downward and forward). According to this structure, the portion where the lever is operated is longer, making it easier to pull the operating lever 28. The extension portion 70 in the illustrated example is formed of a forward extension portion 74 that continues from the forward connecting plate 58a, and a pair of side extension portions 72 that are connected to both sides of this forward extension portion 70 and continue from the side covering plate 54. [Explanation of symbols]

[0035] 2... Discharger body 4... Mounting cap 6... Body 8... Vertical flow path section 10... Horizontal flow path section 12... Pump mechanism 14... Cylinder portion 16... Piston 18... Spring member 20... Mounting plate portion 22... Spring body 23... Projection piece 24... Bearing 26... Nozzle member 27...Discharge port 28...Operating lever 28a...Base 28b...Tip 30...Front plate 32...void 33...receiving portion 34...side plate 35...extension portion 36...pocket 37...shaft portion 40...shroud 42...top wall 44...side wall 50...Cover member 52...Cover body 54...Side covering plate 55...Upper half plate portion 56...Inward projecting part 57...Lower half plate part 58...Connecting member 58a...Front connecting plate 58b...lower connecting plate 58c...rear connecting piece 59...die-cut hole 60...locking piece 62...Flexible plate part 64...Claw part 66...Cut 68...Extension plate part 70...Extension part 72…Lateral extension 74…Front extension 80: Stopper 82: Clamping portion 83: Intermediate connecting portion 84: Knob portion 86: Connecting arm portion 88...Fracture part (hinge) 100...container body 102...mouth and neck portion A... Deformation prevention means (deformation prevention plate) a1... Main deformation prevention plate a2... Secondary deformation prevention plate B…Locking means C…Contour line g…Gap L1, L2…Separation distance P…Spindle support S…Side part X…Side side

Claims

1. a dispenser main body (2) comprising a body (6) having a pump mechanism (12) that sucks liquid from a container body (100), pressurizes it, and discharges it from a discharge port (27), and an operating lever (28) operably engaged with the body (6) is linked to a piston (16) of the pump mechanism (12); a shroud (40) covering at least the side portion (S) of the body (6); a cover member (50) attached to the operating lever (28), This trigger-type dispenser is characterized in that the cover member (50) is disposed between the operating lever (28) and the shroud (40) when viewed from the opening direction of the discharge port (27), and has a deformation prevention means (A) that resists deformation of the operating lever (28) due to an external force from the side (X).

2. The cover member (50) has a cover body (52) supported on the tip (28b) of the operating lever (28), 2. The trigger-type dispenser according to claim 1, wherein the deformation prevention means (A) includes a pair of main deformation prevention plates (a1) extending from both sides of the side (X) of the cover body (52) and sandwiching the body (6) from the outside of the side (X).

3. The cover member (50) has a cover body (52) supported on the tip (28b) of the operating lever (28), 3. A trigger-type dispenser as described in claim 1 or claim 2, characterized in that the deformation prevention means (A) is part of the cover body (52) and includes a secondary deformation prevention plate (a2) interposed in the gap (g) between the base (28a) of the operating lever (28) and the shroud (40).

4. The cover body (52) is formed so as to be attached to the operating lever (28) from the tip of the operating lever (28) toward the pivot support portion P of the operating lever (28), 4. The trigger-type dispenser according to claim 2 or 3, characterized in that a locking means (B) is formed between the cover body (52) and the operating lever (28) to prevent the operating lever (28) from being pulled out in the forward direction.

5. 4. The trigger-type dispenser according to claim 2 or 3, wherein a stopper (80) that is interposed between the cover member (50) and the cylinder portion (14) and that restricts the pulling operation of the operating lever (28) is integrally molded with the cover member (50) via a breaking portion (88).

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