Trigger type ejector and trigger type ejection container

Abstract

To provide a trigger type ejector and a trigger type ejection container capable of executing clear marking without scattering of a coating material.SOLUTION: A trigger type ejection container 10A comprises a trigger type ejector 1A and a container body 50. The ejector 1A includes; a pump 2 attachable to a mouth part 51 of the container body 50; a trigger 3 for operating the pump 2; and a nozzle 4 including a plurality of ejection passages 5 for making the pump 2 communicate with the outside. The plurality of ejection passages 5 is arranged at intervals in a circumferential direction around an axis line O2.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a trigger-type ejector and a trigger-type ejection container.

Background Art

[0002] As a conventional trigger-type ejector, for example, a trigger-type liquid ejector is known in which the content pumped from the pump body by a trigger operation is ejected to the outside through an ejection passage (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the trigger-type ejector, for example, by ejecting paint (especially water-based paint), a mark or the like can be marked at a desired position, which is the target, on the injection target portion such as a wall.

[0005] However, in the case of ejecting water-based paint, the conventional trigger-type liquid ejector may not be able to make a clear marking because the water-based paint splashes.

[0006] An object of the present invention is to provide a trigger-type ejector and a trigger-type ejection container capable of making a clear marking on a target by ejection.

Means for Solving the Problems

[0007] (1) The trigger-type ejector of the present invention includes a pump that can be attached to the mouth of a container body, a trigger that operates the pump, and a nozzle having a plurality of ejection paths that communicate the pump to the outside, and the plurality of ejection paths are arranged at intervals in the circumferential direction around the output axis.

[0008] (2) In the trigger-type ejector of (1) above, it is preferable that the ejection path is inclined at an angle α (0 ≦ α) inward in the radial direction as it approaches the ejection port of the ejection path.

[0009] (3) In the trigger-type ejector of (2) above, it is preferable that the angle α [°] satisfies 0 < α ≦ 0.5.

[0010] (4) The trigger-type ejection container according to the present invention includes the trigger-type ejector according to any one of (1) to (3) above and the container body.

Advantages of the Invention

[0011] According to the present invention, it is possible to provide a trigger-type ejector and a trigger-type ejection container capable of clearly marking a target by ejection.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0013] Hereinafter, with reference to the drawings, a trigger-type ejector and a trigger-type ejection container which are exemplary embodiments of the present invention will be described.

[0014] FIG. 1 schematically shows a cross-sectional shape of a trigger-type ejection container 10A which is a first embodiment of the present invention. The trigger-type ejection container 10A is provided with a trigger-type ejector 1A which is a first embodiment of the present invention. The cross-sectional shape in FIG. 1 is a shape with a plane including the axis O1 and the axis O2 as a cross-section.

[0015] In the following description, the "front side" refers to the side where the ejection port 5a is arranged when the user normally uses the trigger-type ejector 1A, and the "rear side" refers to the side of the user when the user normally uses the trigger-type ejector 1A, that is, the side opposite to the "front side". The axis O2 is an axis extending in the front-rear direction. In the present embodiment, the axis O2 corresponds to the outlet axis. Here, the "outlet axis" is an axis showing the extending direction of the most downstream flow among the flows of the content when ejecting the content of the container body 50 through the trigger-type ejector 1A.

[0016] In the following description, "lower side" refers to the side where the container body 50 attached to the trigger-type ejector 1A is disposed, and "upper side" refers to the side where the trigger-type ejector 1A attached to the container body 50 is disposed, that is, the side opposite to the "lower side". The axis O1 is an axis extending in the vertical direction. In the present embodiment, the axis O1 corresponds to the inlet axis. Here, the "inlet axis" is an axis indicating the extending direction of the most upstream flow among the flows of the content when ejecting the content of the container body 50 through the trigger-type ejector 1A.

[0017] The trigger-type ejection container 10A includes a trigger-type ejector 1A and a container body 50 to which the trigger-type ejector 1A is attached.

[0018] In the present embodiment, the container body 50 is a bottle container. In the present embodiment, the container body 50 includes a mouth portion 51, a neck portion 52 connected to the mouth portion 51, a shoulder portion 53 connected to the neck portion 52, a body portion 54 connected to the shoulder portion 53, and a bottom portion (not shown) connected to the body portion 54. The lower end of the body portion 54 is closed by the bottom portion. An accommodation space S50 for accommodating the content is formed inside the container body 50. The accommodation space S50 communicates with the outside through an opening A50 formed at the upper end of the mouth portion 51. In the present embodiment, the content is an aqueous paint.

[0019] The trigger-type ejector 1A includes a pump 2 that can be attached to the mouth portion 51 of the container body 50, a trigger 3 that operates the pump 2, and a nozzle 4 that includes a plurality of ejection paths 5 that communicate the pump 2 to the outside.

[0020] In the present embodiment, the pump 2 has a mounting cap 18. In the present embodiment, the mounting cap 18 is rotatably retained against removal by a flange 6a provided on an intake member 6 described later. In the present embodiment, the trigger-type ejector 1A is attached to the mouth portion 51 of the container body 50 by the mounting cap 18. In the present embodiment, the mounting cap 18 is attached to the mouth portion 51 by screwing it onto the mouth portion 51 of the container body 50. Further, in the present embodiment, the pump 2 includes a seal member 18a. In the present embodiment, the seal member 18a is an O-ring. The seal member 18a seals between the intake member 6 and the mouth portion 51 of the container body 50 in a state where the trigger-type ejector 1A is attached to the container body 50.

[0021] In the present embodiment, the pump 2 includes an intake member 6 in which an introduction passage R1 for introducing the aqueous paint from the container body 50 is formed, and a pump housing 7 that houses the intake member 6. In addition, in the present embodiment, the pump 2 includes a suction pipe 19. In the present embodiment, the suction pipe 19 is connected to the intake member 6. As a result, in the present embodiment, a suction passage R0 formed inside the suction pipe 19 communicates with an introduction passage R1 formed inside the intake member 6. The suction pipe 19 communicates with the accommodation space S50 of the container body 50 in a state where the trigger-type ejector 1A is attached to the container body 50.

[0022] Also, in the present embodiment, the pump 2 includes a cylinder member 8 housed in the pump housing 7. In the present embodiment, communication holes A6 and A8 for communicating with each other are formed in the intake member 6 and the cylinder member 8, respectively.

[0023] In addition, in the present embodiment, the pump 2 includes a ball valve 11 and an elastic valve 12 inside the introduction passage R1. The ball valve 11 allows the inflow of the aqueous paint from the upstream side of the introduction passage R1 and prevents the backflow of the aqueous paint from the downstream side of the introduction passage R1. Similarly to the ball valve 11, the elastic valve 12 also allows the inflow of the aqueous paint from the upstream side of the introduction passage R1 and prevents the backflow of the aqueous paint from the downstream side of the introduction passage R1.

[0024] A pressure feed passage R7 through which the aqueous paint from the elastic valve 12 is pressure-fed is formed in the pump housing 7. In the present embodiment, the pressure feed passage R7 extends in the front-rear direction. Also, in the present embodiment, the cylinder member 8 also extends in the front-rear direction in parallel with the introduction passage R1. Note that in the present embodiment, the introduction passage R1 formed inside the intake member 6 extends in the vertical direction.

[0025] Furthermore, in the present embodiment, the pump 2 includes a piston 9. In the present embodiment, the piston 9 is slidably accommodated inside the cylinder member 8. However, the cylinder member 8 can be formed in the pump housing 7 by omitting the cylinder member 8.

[0026] In the present embodiment, the trigger 3 is swingably connected to the piston 9. In addition, in the present embodiment, the trigger 3 is swingably attached to the pump 2. In the present embodiment, the trigger 3 is swingably attached to the pump housing 7. As a result, in the present embodiment, the piston 9 can be pushed into the inside of the cylinder member 8 by dragging the trigger 3 to the rear side. In particular, in the present embodiment, an elastic member 3a that biases the trigger 3 to the front side is disposed between the pump 2 and the trigger 3. As a result, in the present embodiment, when the dragging of the trigger 3 is released, the trigger 3 automatically returns to the initial position on the front side shown in FIG. 1. As a result, in the present embodiment, the piston 9 is automatically pushed out to the front side of the cylinder member 8 when the dragging of the trigger 3 is released.

[0027] In addition, in the present embodiment, the elastic member 3a is provided separately from or integrally with the trigger 3 and is held by the pump housing 7. Further, the trigger-type ejector 1A according to the present embodiment includes a pump cover 17 that covers the pump 2. In the present embodiment, the pump cover 17 is attached to the pump housing 7.

[0028] In addition, the trigger-type ejector 1A according to the present embodiment includes a connection element 13 that is connected to the pump 2 and the nozzle 4. In the present embodiment, the rear end portion (upstream end portion) 13a of the connection element 13 is connected to the pump 2. In the present embodiment, the connection element 13 includes a communication port A13 that communicates with a pressure feed path R7 formed in the pump housing 7. Further, in the present embodiment, the front end portion (downstream end portion) 13b of the connection element 13 is connected to the nozzle 4. In the present embodiment, a plurality of communication paths R13 that communicate with the communication port A13 are formed between the nozzle 4 and the connection element 13. Furthermore, in the present embodiment, a confluence space S1 is formed between the nozzle 4 and the connection element 13. In the present embodiment, the communication paths R13 communicate with the confluence space S1.

[0029] In the present embodiment, all the ejection paths 5 provided in the nozzle 4 communicate with the confluence space S1. In the present embodiment, the nozzle 4 includes a nozzle body 14 that is attached to the connection element 13 and a nozzle element 15 that is fitted and held in a through hole 14h formed inside the nozzle body 14. In the present embodiment, the plurality of ejection paths 5 are respectively formed between the nozzle body 14 and the nozzle element 15. The plurality of ejection paths 5 each extend in the front-rear direction. Specifically, as shown in FIG. 1, in a longitudinal cross-sectional view, they linearly extend in the front-rear direction. Here, the "longitudinal cross-section" is a cross-section including the axes O1 and O2 as shown in FIG. 1.

[0030] In FIG. 2, the nozzle 4 is shown enlarged from the front side.

[0031] As shown in FIG. 2, the plurality of ejection passages 5 are arranged at intervals in the circumferential direction around the axis O2 (output side axis).

[0032] In the present embodiment, the ejection passages 5 are arranged at equal intervals in the circumferential direction. In the present embodiment, the nozzle 4 includes eight ejection ports 5a, that is, eight ejection passages 5. In FIG. 2, for example, only one ejection port 5a (ejection passage 5) is labeled. However, the number of ejection ports 5a (ejection passages 5) is not limited to eight. For example, the number of ejection ports 5a (ejection passages 5) can be appropriately set according to the viscosity of the aqueous paint. Also, the intervals in the circumferential direction of the plurality of ejection ports 5a (ejection passages 5) can also be appropriately set.

[0033] The long groove 21 linearly extends in the front-rear direction in a longitudinal sectional view so as to form the ejection passage 5. In the present embodiment, the ejection passage 5 is formed by the inner peripheral surface F1 of the through hole 14h formed in the nozzle body 14 and the groove bottom surface F2 of the long groove 21 formed on the outer peripheral surface of the nozzle element 15. Thereby, the cross-sectional shape of the flow path of the ejection passage 5, that is, the cross-sectional shape of the ejection port 5a of the ejection passage 5, is formed by two curves, namely, the contour curve of the inner peripheral surface F1 of the through hole 14h and the contour curve of the groove bottom surface F2 of the long groove 21, as shown in FIG. 2, in a view in the axial direction. In the present embodiment, the radius of curvature of the radially inner contour curve is smaller than the radius of curvature of the radially outer contour curve. Here, the "radial direction" refers to the direction orthogonal to the axis O2. Further, the "radially inner side" refers to the side closer to the axis O2 among the radial directions, and the "radially outer side" refers to the side farther from the axis O2 among the radial directions.

[0034] In addition, in the present embodiment, the nozzle 4 includes a shielding member 16 for opening and closing the ejection port 5a of the ejection path 5. In the present embodiment, the shielding member 16 is swingably attached to the nozzle 4 by a pin 16a. As a result, in the present embodiment, the ejection port 5a can be opened and closed by swinging the shielding member 16. In the present embodiment, the shielding member 16 is swingably attached to the nozzle body 14. Note that, in FIG. 2, the shielding member 16 is shown in an open state. Further, in FIG. 1, the shielding member 16 is shown in a closed state.

[0035] FIG. 3 is a front view schematically showing the nozzle element 15 from the front side. In the present embodiment, as shown in FIG. 3, the outer appearance shape of the inner peripheral surface F1 of the through hole 14h formed in the nozzle body 14 is formed by a curve with a radius of curvature r14 in the axial direction view, where the radius of curvature r14 is the radius of the through hole 14h. Further, in the present embodiment, the groove bottom surface F2 of the long groove 21 formed in the nozzle element 15 is formed by a curved surface. In the present embodiment, the outer appearance shape of the groove bottom surface F2 is formed by a curve with a radius of curvature r15 in the axial direction view, as shown in FIG. 2.

[0036] According to the trigger-type ejector, as in the present embodiment, by ejecting an aqueous paint, a mark or the like can be marked at a desired position, which is the target, among the ejection target portions such as a wall.

[0037] However, in the case of a conventional trigger-type liquid ejector having only one ejection port, the following problems occur.

[0038] As a first problem, for example, when an aqueous paint is ejected in a mist form, the aqueous paint spreads as it goes farther. In this case, the mark becomes blurred, and moreover, the aqueous paint scatters.

[0039] As a second problem, when the aqueous paint is directly sprayed in a straight line, the aggregated liquid hits the target forcefully. In this case, the aqueous paint that hits the target bounces and scatters.

[0040] That is, when using a conventional trigger-type liquid ejector, it may not be possible to make a clear marking against the target by injection.

[0041] On the other hand, in the trigger-type ejector 1A according to the present embodiment, the ejection port 5a provided in the nozzle 4 is configured as a plurality of ejection ports arranged so as to surround the axis O2. Further, by extending the ejection path 5 linearly in the front-rear direction, the ejection form of the aqueous paint is set to an ejection form in which a plurality of direct sprays are performed. As a result, it is possible to suppress the spread of the aqueous paint after it is ejected, and it is possible to suppress the scattering of the aqueous paint. In addition, according to the trigger-type ejector 1A, by providing a plurality of ejection paths 5, the amount of liquid per direct spray is reduced, thereby weakening the impact when the aqueous paint hits the target and suppressing the splashing of the aqueous paint.

[0042] Therefore, according to the trigger-type ejector 1A according to the present embodiment, and thus the trigger-type ejection container 10A, clear marking can be made against the target by ejecting the content, in this embodiment, by ejecting the aqueous paint.

[0043] Here, FIG. 4 is a cross-sectional view schematically showing the nozzle element 15 of FIG. 3 in an X-X cross-section.

[0044] In the present embodiment, the ejection path 5 can be inclined at an angle α (0 ≦ α) toward the inside in the radial direction as it goes toward the ejection port 5a of the ejection path 5. Specifically, the ejection path 5 can extend parallel to the axis O2 (α = 0), or can be inclined at an angle α (0 < α) toward the inside in the radial direction with respect to the axis O2 as it goes toward the ejection port 5a.

[0045] As shown in Fig. 4, in the present embodiment, the long groove 21 of the nozzle element 15 is inclined at an angle α (0 < α) with respect to the axis parallel to the axis O2 so as to approach the axis O2 as it goes forward. Specifically, among the groove bottom surfaces F2 of the long groove 21, the deepest part F2b of the groove bottom surface F2 is inclined at an angle α (0 < α) with respect to the axis parallel to the axis O2 so as to approach the axis O2 as it goes forward. Here, the deepest part F2b refers to the part at the deepest position (radially inner position) among the groove bottom surfaces F2 of the long groove 21. Thereby, in the present embodiment, the ejection path 5 formed between the nozzle body 14 and the nozzle element 15 is configured to be inclined at an angle α (0 < α) radially inward as it goes toward the ejection port 5a of the ejection path 5.

[0046] When the ejection path 5 is provided so as to be inclined radially outward as it goes forward, that is, when it is provided so as to spread toward the target, when the ejected aqueous paint hits the target, the distance between each straight jet may be too large and the mark may become unclear.

[0047] On the contrary, in the present embodiment, the ejection path 5 is inclined at an angle α (0 < α) radially inward as it goes toward the ejection port 5a of the ejection path 5. In this case, even when each straight jet from the ejection port 5a approaches the target, the distance between them does not open. Therefore, in this case, it is possible to suppress the mark from becoming unclear.

[0048] By the way, in the present embodiment, it is preferable that the angle α [°] satisfies 0 < α ≤ 0.5.

[0049] In the marking using the trigger-type ejector 1A, when the distance between the ejection port 5a and the target is set to 40 cm to 50 cm, the angle α is preferably 0 < α ≤ 0.5°. When 0 < α ≤ 0.5°, when ejecting from a position where the distance between the position of the ejection port 5a and the position of the target is 40 cm to 50 cm, it becomes difficult for each straight ejection from the ejection port 5a to intersect with each other. As a result, it becomes difficult for each straight ejection of the aqueous paint to scatter in a scattered manner. Therefore, in this case, the aqueous paint is difficult to splash and can be marked neatly on the target.

[0050] In particular, in the marking using the trigger-type ejector 1A, when the distance between the ejection port 5a and the target is set to 40 cm to 50 cm, more preferably, α = 0.5°. In this case, when ejecting at a position 40 cm to 50 cm from the ejection port 5a, each straight ejection from the ejection port 5a does not intersect with each other. As a result, each straight ejection of the aqueous paint does not scatter in a scattered manner. Therefore, in this case, the aqueous paint does not splash and can be marked more neatly on the target.

[0051] FIG. 5 is a cross-sectional view schematically showing a trigger-type ejection container 10B which is a second embodiment of the present invention. The trigger-type ejection container 10B includes a trigger-type ejector 1B which is a second embodiment of the present invention. The ejection port 5a of the trigger-type ejector 1B is shown in a state of being closed by a shielding member 16.

[0052] In the trigger-type ejection container 10B according to the present embodiment, parts substantially the same as those of the trigger-type ejection container 10A which is the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

[0053] The trigger-type ejector 1B includes a storage pump 25 together with a pump 2. The trigger-type ejector 1B can continuously eject the aqueous paint even in a state where the trigger 3 is not operated after the trigger 3 is pulled. Examples of such a trigger-type ejector include Japanese Patent Application Laid-Open No. 2023-163944.

[0054] FIG. 6 shows an enlarged view of the trigger-type ejector 1B from the front side. In FIG. 6, the shielding member 16 of the trigger-type ejector 1B is shown in an open state. As shown in FIG. 6, in this embodiment, the form of the ejection path 5 is the same as that of the ejection path 5 of the trigger-type ejector 1A. According to the trigger-type ejector 1B, and thus the trigger-type ejection container 10B, according to this embodiment, similarly to the first embodiment, by ejecting the content, in this embodiment, by ejecting the aqueous paint, clear marking can be performed on the target.

[0055] What has been described above is an exemplary embodiment of the present invention, and various changes can be made without departing from the scope of the claims. The content used is not limited to the aqueous paint as long as it is a liquid intended to be ejected to a desired position of the ejection target portion such as a wall. Also, the ball valve 11 and the elastic valve 12 can be changed to an existing check valve as long as they are configured to function the pump 2.

Description of Reference Numerals

[0056] 1A: Trigger-type ejector (first embodiment), 1B: Trigger-type ejector (second embodiment), 2: Pump, 3: Trigger, 3a: Elastic member, 4: Nozzle, 5: Ejection path, 5a: Ejection port, 6: Intake member, 6a: Flange, 7: Pump housing, 8: Cylinder member, 9: Piston, 10A: Trigger-type ejection container (first embodiment), 10B: Trigger-type ejection container (second embodiment), 11: Ball valve, 12: Elastic valve, 13: Connection element, 14: Nozzle body, 14h; Through hole, 15: Nozzle element, 16: Shielding member, 16a: Pin, 17: Pump cover, 18: Mounting cap, 18a: Seal member, 19: Suction pipe, 21: Long groove, 50: Container body, 51: Mouth part, 52: Neck part, 53: Shoulder part, 54: Body part, A6: Communication hole of intake member, A8: Communication hole of cylinder member, A13; Communication port, A50: Opening formed in mouth part, F1: Inner peripheral surface of through hole, F2: Groove bottom surface of long groove, F2b: Deepest part of groove bottom surface, O1: Axis (inlet axis), O2: Axis (outlet axis), R0: Suction path, R1: Introduction path, R7: Pressure feed path, R13: Communication path, S1: Confluence space, S50: Accommodation space

Claims

1. A pump that can be attached to the mouth of the container body, A trigger for operating the pump, A nozzle having a plurality of ejection paths that communicate the pump to the outside, and comprising: The plurality of ejection paths are arranged at intervals in the circumferential direction around the outlet axis, a trigger-type ejector.

2. The ejection path is inclined at an angle α (0 ≦ α) toward the radially inner side as it goes toward the ejection port of the ejection path, the trigger-type ejector according to claim 1.

3. The angle α [°] is 0 < α ≦ 0.5, the trigger-type ejector according to claim 2.

4. A trigger-type ejection container comprising the trigger-type ejector according to any one of claims 1 to 3 and the container body.

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