Trigger liquid dispenser

Abstract

The present invention provides a trigger-type liquid sprayer, which includes: a main body, which has a built-in pump capable of sucking and pressurizing the liquid in the container body; an operating rod, which activates the pump by being pulled relative to the main body; and a nozzle, which sprays the liquid through the actuation of the pump, the operating rod including a pair of guide parts extending along the pulling direction relative to the main body, and the pair of guide parts are configured in a manner of clamping a part of the main body.

Description

Technical Field

[0001] The present invention relates to a trigger type liquid sprayer. Background Art

[0002] In the prior art, there is known a trigger spray container configured to spray liquid such as household detergent, disinfectant, hairdresser, fragrance, and deodorant in a mist or foam state (Japanese Patent Laid-Open No. 2008-200572, etc.). The existing trigger spray container includes a container body for storing liquid and a trigger liquid ejector mounted on the mouth of the container body. The trigger liquid ejector is configured to eject the liquid in the container body in a mist or foam state from a nozzle using a pump that is actuated by pulling an operating rod. Summary of the invention

[0003] The present invention provides a trigger-type liquid sprayer, which includes: a main body, which has a built-in pump capable of sucking and pressurizing the liquid in the container body; an operating rod, which actuates the pump by being pulled relative to the main body; and a nozzle, which sprays the liquid through the actuation of the pump. In the trigger-type liquid sprayer, the operating rod includes a pair of guide parts extending along the pulling direction relative to the main body, and the pair of guide parts are configured in a manner of clamping a part of the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1A This is a cut-away cross-sectional view of the trigger type liquid ejector according to the first embodiment.

[0005] Figure 1B It is along Figure 1A An enlarged cross-sectional view of the line AA'.

[0006] Figure 2 This is a cut-away cross-sectional view showing the operating lever and the pump according to the first embodiment.

[0007] Figure 3 This is a cut-away cross-sectional view showing a state in which the operating lever according to the first embodiment is pulled.

[0008] Figure 4A It is a figure which shows the trigger type liquid ejector of 2nd Embodiment.

[0009] Figure 4B It is along Figure 4A An enlarged cross-sectional view of the BB' line.

[0010] Figure 5A It is a cut-away cross-sectional view showing a trigger type liquid ejector according to a third embodiment.

[0011] Figure 5B It is along Figure 5A Enlarged cross-sectional view of line CC'. DETAILED DESCRIPTION

[0012] In the trigger spray container of Japanese Patent Laid-Open No. 2008-200572, there is a concern that a load in a direction different from the pulling direction of the operating rod (e.g., an oblique direction) may be applied due to the pulling method of the user or other external forces, thereby reducing the sealing between the piston and the cylinder and causing liquid to leak from between the components.

[0013] Therefore, the present invention relates to a trigger type liquid ejector capable of preventing liquid leakage due to a load applied to an operation rod.

[0014] That is, the present invention relates to a trigger-type liquid ejector, comprising: a main body portion, which has a built-in pump capable of sucking and pressurizing liquid in a container body; an operating rod, which actuates the pump by being pulled relative to the main body portion; and a nozzle, which ejects liquid by the actuation of the pump. In the trigger-type liquid ejector, the operating rod includes a pair of guide portions extending along a pulling direction relative to the main body portion, and the pair of guide portions are configured in a manner of clamping a portion of the main body portion.

[0015] The trigger type liquid ejector of the present invention can prevent liquid leakage caused by a load applied to the operating rod.

[0016] The following describes the preferred embodiments for implementing the present invention using the accompanying drawings. In addition, the following embodiments do not limit the invention of each technical solution, and the combination of features described in the embodiments is not necessarily required for the solution of the invention. In addition, the accompanying drawings are schematic diagrams that are appropriately emphasized, omitted, or adjusted in ratio in order to illustrate the present invention, and there are cases where the actual shapes, positional relationships, and ratios are different.

[0017] First, use Figure 1A to Figure 3 The trigger type liquid ejector 20 of the first embodiment will be described. Figure 1A As shown, the trigger type liquid ejector 20 of the first embodiment is configured to be attachable to a container body 10 that can contain liquid, and the liquid in the container body 10 can be ejected by a manual operation of a user.

[0018] like Figure 1A As shown, the trigger-type liquid ejector 20 generally includes: a main body 30, which has a built-in pump 40 capable of sucking and pressurizing the liquid in the container body 10; an operating rod 26 (trigger), which is arranged on the front side of the main body 30 and actuates the pump 40 by being pulled relative to the main body 30; and a nozzle 24, which is arranged at the front end of the main body 30 and ejects the liquid to the outside through the actuation of the pump 40.

[0019] In this specification, the direction of the liquid ejected from the nozzle 24 described below is set as "front", and the opposite direction is set as "rear" for description. In addition, the direction from the container body 10 to the trigger-type liquid ejector 20 (the side opposite to the container body 10 when viewed from the trigger-type liquid ejector 20) is set as "upward", and the opposite direction (the container body 10 side when viewed from the trigger-type liquid ejector 20) is set as "downward" for description. However, the up and down directions mentioned here are only directions specified for convenience of description and are not limited to the up and down directions in actual use conditions.

[0020] like Figure 1A As shown, the container body 10 is a bottomed cylindrical container body 10 having a small diameter cylindrical mouth tube portion 12 at the top, and is configured to accommodate liquid in its internal space. In addition, this container body 10 can adopt various known structures, so its detailed description is omitted.

[0021] In the trigger type liquid ejector 20 of the first embodiment, the structure other than the structure related to the operation lever 26 can adopt the structure of various well-known trigger type liquid ejectors, and therefore, the following is a simple description of an example, and the detailed description is omitted.

[0022] like Figure 1A As shown, the main body 30 includes: a mounting cap 22 (mounting portion) configured to be mountable on the mouth tube 12 of the container body 10; a longitudinal tube 34 extending upward (opposite to the container body 10) from the mounting cap 22; a transverse tube 36 extending forward (in the direction of liquid ejection) from the upper end of the longitudinal tube 34 (the end on the opposite side to the mounting cap 22) and connected to the nozzle 24; a cylindrical retaining portion 38 extending forward from the middle of the longitudinal tube 34; a pump 40 retained in the retaining portion 38; and a head cover 28 covering the main body 30 (the longitudinal tube 34, the transverse tube 36, and the retaining portion 38). The head cover 28 covers the main body 30 in a manner extending to the vicinity of the nozzle 24. The so-called "nearby" here means that the distance between the front end of the head cover 28 on the ejection direction side and the rear end of the nozzle 24 (the end on the opposite side of the ejection direction side) is in the range of 0 mm to 1 mm. In addition, the front end of the head cover 28 on the spraying direction side and the rear end of the nozzle 24 may overlap.

[0023] like Figure 1AAs shown, the longitudinal cylinder 34 has a cylindrical neck 32 at the lower end which is inserted into the upper opening (not shown) of the mounting cover 22. The neck 32 has a smaller width (i.e., diameter) in the direction intersecting the swing direction of the operating rod 26 than the mounting cover 22. In addition, the longitudinal cylinder 34 has a cylindrical liquid inlet 35 inside. The lower end of the liquid inlet 35 is connected to a tube 37 extending in the container body 10, and the upper end thereof is connected to the rear end of the transverse cylinder 36, thereby forming a conveying path from the container body 10 to the nozzle 24 by the tube 37, the liquid inlet 35 and the transverse cylinder 36. A communication hole 35a is formed in the liquid inlet 35 which is connected to the pump chamber 46 described below, and a suction valve 35b and a discharge valve 35c are respectively arranged on the upstream and downstream sides of the communication hole 35a, so that the liquid can be sucked from the container body 10 into the pump chamber 46 and the liquid can be pressure-fed from the pump chamber 46 to the nozzle 24 by the operation of the pump 40.

[0024] like Figure 1A As shown, the pump 40 includes a cylindrical cylinder 42 that is fitted and held in the holding portion 38, and a piston 44 that is reciprocally accommodated inside the cylinder 42. The piston 44 is formed to have a smaller diameter than the cylinder 42, thereby forming a gap between the outer peripheral surface of the piston 44 and the inner peripheral surface of the cylinder 42. An annular sealing portion 45 is protrudingly provided at the rear end of the piston 44, and the sealing portion 45 is in liquid-tight contact with the inner peripheral surface of the cylinder 42 in a manner that can slide relative to the inner peripheral surface of the cylinder 42. The inner side of the cylinder 42 is sealed by the sealing portion 45, thereby forming a pump chamber 46 at a position on the rear side of the sealing portion 45. The front end of the piston 44 is engaged with the operating rod 26, and a coil spring 47 (urging mechanism) provided inside the piston 44 urges the piston 44 in the direction of pushing back the operating rod 26 (the expansion direction of the pump chamber 46).

[0025] like Figure 1A and Figure 1B As shown, the operating lever 26 comprises: a lever body portion 26A extending from the horizontal cylinder portion 36 of the main body portion 30 toward the container body 10 side, and its base end portion is swingably supported by the horizontal cylinder portion 36; and a pair of guide portions 26B ( Figure 1A Only one guide portion 26B is shown in the figure, and is formed to protrude from the rod body portion 26A toward the vertical tube portion 34 in a manner that sandwiches a portion of the main body portion 30 (the cylinder 42 in this embodiment).

[0026] like Figure 1A As shown, the upper end (base end) of the rod body 26A is pivotally connected to the front end side of the horizontal cylinder 36 of the main body 30, and is suspended downward (on the container body 10 side) from the horizontal cylinder 36 in a manner opposite to the vertical cylinder 34, the retaining portion 38 and the mounting cover 22. The rear surface of the rod body 26A is engaged with the front end of the piston 44 as described above, and is configured to reciprocate the piston 44 by the reciprocating movement of the rod body 26A.

[0027] like Figure 1A As shown in FIG. 1 , a pair of guide portions 26B protrude from the rear surface of the rod body portion 26A toward the longitudinal tube portion 34 in a substantially triangular shape. Figure 1B As shown, one guide portion 26B extends from the rod body portion 26A in the width direction ( Figure 1B The edge of one side of the guide portion 26B (in the vertical direction of the paper) extends backward (in the pulling direction), and the other guide portion 26B extends backward (in the pulling direction) from the edge of the other side in the width direction. In addition, the shape of the pair of guide portions 26B is not limited to the roughly triangular shape shown in the figure, and various arbitrary shapes such as circular, elliptical, polygonal, etc. may also be adopted as long as the shape does not hinder the pulling operation of the rod body portion 26A. In the present embodiment, the pair of guide portions 26B are the same shape, but they may also be different shapes from each other. For example, the combination of the shapes of the pair of guide portions 26B may be a combination of one guide portion 26B being roughly triangular and the other guide portion 26B being circular, or a pair of guide portions 26B may be composed of a combination of various shapes.

[0028] like Figure 2 As shown, the pair of guide portions 26B have a length in the protruding direction that reaches the position where the cylinder 42 is clamped when the operating rod 26 is in the non-operating position (initial position urged by the coil spring 47) away from the longitudinal tube portion 34. Specifically, the front end of each guide portion 26B in the protruding direction is located at a position overlapping with the cylinder 42. In addition, from the viewpoint of stably guiding the operating rod 26, the pair of guide portions 26B preferably have a length in the protruding direction from the rear end of the rod body portion 26A to the longitudinal tube portion 34. In addition, in the present embodiment, the lengths of the pair of guide portions 26B in the protruding direction from the rear end of the rod body portion 26A to the longitudinal tube portion 34 are the same, but the lengths may be different.

[0029] like Figure 1B As shown, each guide portion 26B is arranged in contact with the peripheral surface of the cylinder 42 or with a slight gap therebetween. Specifically, the gap (gap) between each guide portion 26B and the peripheral surface of the cylinder 42 is preferably 0 mm or more, more preferably 1 mm or more, and further preferably 2 mm or more from the viewpoint of operability and usability, and is preferably 7 mm or less, more preferably 5 mm or less, and further preferably 2 mm or less from the viewpoint of preventing poor pulling of the operating rod 26 and preventing liquid leakage, and from the viewpoint of stably guiding the operating rod 26 using the peripheral surface of the cylinder 42. In addition, when each guide portion 26B is in contact with the peripheral surface of the cylinder 42, the contact pressure of each guide portion 26B on the peripheral surface of the cylinder 42 is preferably set within a range that does not hinder the pulling operation of the rod body 26A.

[0030] The pair of guide portions 26B are configured to be located between the head cover 28 and the cylinder 42, respectively. Specifically, a gap is formed between the head cover 28 and the cylinder 42, and the pair of guide portions 26B are configured to be swingable in the gap. More specifically, the width of the direction in which one guide portion 26B and the other guide portion 26B are spaced apart from each other (spaced apart from each other) is formed to be slightly smaller than the width of the head cover 28 in the direction orthogonal to the ejection direction, and is formed to be slightly larger than the diameter of the cylinder 42.

[0031] The front ends of the pair of guide portions 26B in the protruding direction are covered by the head cover 28 in the non-operating position. Here, the so-called "covered" means that the front ends of the pair of guide portions 26B in the protruding direction are located on the inner side of the head cover 28 in the non-operating position. Specifically, the protrusion amount of the pair of guide portions 26B to the head cover 28 is preferably 1 mm or more, more preferably 3 mm or more, and further preferably 5 mm or more. In addition, it is preferably 30 mm or less, more preferably 20 mm or less, and further preferably 15 mm or less. Here, the so-called "protrusion amount" refers to the amount of entry of the pair of guide portions 26B to the protruding direction side of the portion of the pair of guide portions 26B covered by the head cover 28, with the end of the ejection direction side of the head cover 28 as the reference. Specifically, the so-called "protrusion amount" refers to the straight-line distance L (refer to) from the front end T of the protruding direction side of the guide portion 26B to the intersection X of the horizontal line passing through the front end T and the head cover 28. Figure 2 ).

[0032] like Figure 1B As shown, each guide portion 26B is arranged in contact with the inner surface of the head cover 28 or with a slight gap therebetween. Specifically, the gap (gap) between each guide portion 26B and the inner surface of the head cover 28 is preferably 0 mm or more, more preferably 1 mm or more, and further preferably 2 mm or more from the viewpoint of stably guiding the operating rod 26 using the inner surface of the head cover 28, and is preferably 7 mm or less, more preferably 5 mm or less, and further preferably 2 mm or less from the viewpoint of suppressing poor pulling of the operating rod 26 and preventing liquid leakage. In addition, when each guide portion 26B is in contact with the inner surface of the head cover 28, it is preferable that the contact pressure of each guide portion 26B on the inner surface of the head cover 28 is set within a range that does not hinder the pulling operation of the rod body 26A.

[0033] The pair of guide portions 26B has rigidity, and this rigidity makes it possible for the pair of guide portions 26B to abut against the peripheral surface of the cylinder 42 and / or the inner surface of the head cover 28 when an external force is applied to a direction different from the pulling direction of the operating rod 26 (for example, an oblique direction), so that the pulling direction of the operating rod 26 can be corrected to the correct pulling direction. Such rigidity can be achieved by adjusting the material, thickness, etc. of the pair of guide portions 26B. For example, the pair of guide portions 26B are formed of metal, wood, or synthetic resin. For example, PP (polypropylene), PE (polyethylene), etc. can be preferably used as the synthetic resin, but it is not limited to this. In addition, the guide portion 26B is not limited to a structure that is integrally provided with the rod body portion 26A, and can also be other components that can be installed on the rod body portion 26A later.

[0034] As described above, regarding the pair of guide portions 26B, Figure 2 As shown in FIG. 1 , in the non-operating position, the front ends of the pair of guide portions 26B on the protruding direction side are located at a position overlapping with the front ends of the cylinder tube 42 on the ejecting direction side. In addition, the pair of guide portions 26B are swung while sandwiching the cylinder tube 42 by pulling the operating lever 26, as shown in FIG. Figure 3 As shown, in the actuation position of the operating rod 26 (the position where the operating rod 26 is pulled. The pulling limit position), the front end of the pair of guide portions 26B in the protruding direction is located at a position closer to the rear of the cylinder 42 than the position in the non-actuation position. That is, the range of the pair of guide portions 26B sandwiching the cylinder 42 is larger than the range in the non-actuation position. As a result, the pulling of the operating rod 26 can be guided more stably, so that even during the ejection of liquid, the sealing between the piston 44 of the pump 40 and the cylinder 42 can be maintained, and liquid leakage can be prevented.

[0035] The trigger-type liquid ejector 20 of the first embodiment has the above structure, and the operating rod 26 is pulled in a manner close to the main body 30 so that the piston 44 enters the cylinder 42, thereby pressurizing the liquid in the pump chamber 46. By utilizing this pressurizing force, the suction valve 35b is pressed against the valve seat to maintain a closed state, and the ejection valve 35c is moved away from the valve seat to an open state, thereby enabling the liquid in the pump chamber 46 to be ejected from the nozzle 24 to the outside via the delivery path.

[0036] In addition, when the trigger type liquid ejector 20 of the first embodiment releases the operating rod 26 after the liquid is ejected, the piston 44 and the operating rod 26 are pushed back forward by the force applied by the coil spring 47, thereby forming a negative pressure in the pump chamber 46. Due to this negative pressure, the suction valve 35b is separated from the valve seat and displaced to an open state, and the ejection valve 35c is pressed against the valve seat to become a closed state, thereby allowing the liquid in the container body 10 to flow into the pump chamber 46 through the tube 37. By repeatedly pulling and releasing the operating rod 26, the liquid in the container body 10 can be continuously ejected from the nozzle 24.

[0037] As described above, in the trigger liquid ejector 20 of the first embodiment, the operating rod 26 includes a pair of guide portions 26B extending in the pulling direction relative to the main body 30 , and the pair of guide portions 26B are arranged so as to sandwich a part of the main body 30 (cylinder 42 ).

[0038] According to the trigger-type liquid ejector 20 of the first embodiment having such a structure, when the operating rod 26 is pulled, even if a strong load is applied in a direction different from the pulling direction of the operating rod 26 (e.g., an oblique direction), the pulling of the operating rod 26 can be guided by the guide portion 26B, thereby preventing the operating rod 26 from being pulled in an oblique direction. Thus, the sealing between the piston 44 and the cylinder 42 of the pump 40 can be maintained, thereby preventing liquid leakage. In addition, damage to the operating rod 26, the pump 40, etc. can be prevented. Furthermore, even when the product is not in motion, such as when transporting the product or moving the product after purchase, by applying a force in a direction different from the pulling direction (e.g., a lateral direction), the sealing between the piston 44 and the cylinder 42 can be maintained, thereby preventing liquid leakage.

[0039] In addition, the trigger type liquid ejector 20 of the first embodiment is configured such that a pair of guide portions 26B have a length in the protruding direction that reaches the position sandwiching the cylinder 42 at the non-action position where the operating rod 26 is separated from the longitudinal tube portion 34. According to such a structure, the pulling of the operating rod 26 can be guided from the beginning of pulling the operating rod 26, so that the operating rod 26 can be guided more stably, and liquid leakage can be further prevented. In addition, even when the product is transported or moved after purchase, the sealing of the piston 44 and the cylinder 42 can be maintained by applying a force in a direction different from the pulling direction (for example, in the lateral direction), and liquid leakage can be further suppressed.

[0040] Furthermore, the trigger type liquid ejector 20 of the first embodiment further includes a head cover 28 covering the main body 30, and a pair of guides 26B are configured to be located between the head cover 28 and the cylinder 42. According to this structure, the movement path of each guide 26B can be defined by the head cover 28 and the cylinder 42, so that each guide 26B can be used for guiding more stably. In addition, even when the product is transported or moved after the product is purchased, the sealing of the piston 44 and the cylinder 42 can be maintained by applying force in a direction different from the pulling direction (for example, in the horizontal direction), which can further prevent liquid leakage.

[0041] [Second embodiment]

[0042] Next, use Figure 4A and Figure 4BA trigger type liquid ejector 20' according to a second embodiment of the present invention will be described. In the trigger type liquid ejector 20' according to the second embodiment, the structure other than the head cover 28' can be the same as that of the trigger type liquid ejector 20 according to the first embodiment, and therefore the description thereof will be omitted by using the same reference numerals.

[0043] like Figure 4A and Figure 4B As shown, the trigger type liquid ejector 20 ′ of the second embodiment is provided with an auxiliary guide portion 29 ′ for guiding each guide portion 26B between each guide portion 26B and the cylinder 42 .

[0044] In the trigger-type liquid ejector 20' of the second embodiment, the auxiliary guide portion 29' is provided on the head cover 28'. Specifically, the head cover 28' of the second embodiment is configured to have a double-wall structure, and the double-wall structure has an outer wall covering the main body 30, and a pair of inner walls arranged on the inner side of the outer wall at a distance from the outer wall, and the pair of inner walls function as the auxiliary guide portion 29'. A pair of auxiliary guide portions 29' (inner walls) are arranged in a manner opposite to each other, and are respectively integrated with the outer wall of the head cover 28'. However, the pair of auxiliary guide portions 29' (inner walls) are not limited to a structure that is provided integrally with the outer wall of the head cover 28', and may also be other components that can be installed on the outer wall later.

[0045] Between the outer wall of the head cover 28' and each auxiliary guide part 29', a gap is formed in which each guide part 26B can be arranged. That is, the outer wall of the head cover 28' and each auxiliary guide part 29' are arranged in a manner of sandwiching each guide part 26B. Specifically, the width of the outer wall of the head cover 28' in a direction perpendicular to the ejection direction is formed to be slightly larger than the width in the direction in which the pair of guide parts 26B are spaced apart from each other, and the width of the pair of auxiliary guide parts 29' in the direction in which the pair of guide parts 26B are spaced apart from each other is formed to be slightly smaller than the width in the direction in which the pair of guide parts 26B are spaced apart from each other.

[0046] In addition, the pair of auxiliary guides 29' (inner walls) have a size that enables at least a portion of the pair of guides 26B to be located between the outer wall of the head cover 28' and each auxiliary guide 29' (inner wall) in the non-actuated position and the actuated position of the operating rod 26. Thus, the outer wall of the head cover 28' and each auxiliary guide 29' can define the movement path of each guide 26B, so that each guide 26B can be guided more stably.

[0047] Each guide portion 26B is disposed between the outer wall of the head cover 28' and each auxiliary guide portion 29' in such a manner as to be in contact with the outer wall and each auxiliary guide portion 29' or separated by a small gap. Specifically, the interval (gap) between each guide portion 26B and the outer wall of the head cover 28' and / or each auxiliary guide portion 29' is preferably 0 mm or more, more preferably 1 mm or more, and further preferably 2 mm or more from the viewpoint of stably guiding the operating rod 26, and is preferably 7 mm or less, more preferably 5 mm or less, and further preferably 2 mm or less from the viewpoint of suppressing poor pulling of the operating rod 26 and preventing liquid leakage. In addition, when each guide portion 26B is in contact with the outer wall of the head cover 28' and / or each auxiliary guide portion 29', the contact pressure of each guide portion 26B relative to the outer wall of the head cover 28' and / or each auxiliary guide portion 29' is preferably set within a range that does not hinder the pulling operation of the rod body 26A.

[0048] As described above, in the trigger type liquid ejector 20' of the second embodiment, the auxiliary guide portion 29' for guiding each guide portion 26B is provided in a manner that each guide portion 26B is sandwiched between the outer wall of the head cover 28'. According to the trigger type liquid ejector 20' of this second embodiment, in addition to having the advantages of the trigger type liquid ejector 20 of the first embodiment described above, it also has the advantage of being able to guide each guide portion 26B more stably by using each auxiliary guide portion 29'. In addition, the design of the operating rod 26 can be free from being restricted by the size of the cylinder 42, so the design freedom of the head cover 28' and the operating rod 26 can also be improved.

[0049] [Third embodiment]

[0050] Next, use Figure 5A and Figure 5B A trigger-type liquid ejector 20" according to a third embodiment of the present invention is described. In addition, in the trigger-type liquid ejector 20" according to the third embodiment, the structure other than the cylinder 42" can adopt the same structure as the trigger-type liquid ejector 20 according to the first embodiment, and therefore the description thereof is omitted by using the same figure marks.

[0051] like Figure 5A and Figure 5B As shown, the trigger type liquid ejector of the third embodiment is provided with an auxiliary guide portion 29″ between each guide portion 26B and the head cover 28 for guiding each guide portion 26B.

[0052] In the trigger-type liquid ejector 20" of the third embodiment, an auxiliary guide portion 29" is arranged in the cylinder 42". Specifically, the cylinder 42" of the third embodiment is constructed to have a double-wall structure, and the double-wall structure has an inner wall for accommodating the piston 44, and a pair of outer walls arranged on the outside of the inner wall at a distance from the inner wall, and the pair of outer walls function as the auxiliary guide portion 29". A pair of auxiliary guide portions 29" (outer walls) are arranged in a manner opposite to each other, and are respectively integrated with the inner wall of the cylinder 42". However, the pair of auxiliary guide portions 29" (outer walls) are not limited to a structure that is integrally provided with the inner wall of the cylinder 42", and may also be other components that can be installed on the inner wall later.

[0053] A gap in which each guide portion 26B can be arranged is formed between the inner wall of the cylinder 42" and each auxiliary guide portion 29" (outer wall). That is, the inner wall of the cylinder 42" and each auxiliary guide portion 29" are arranged in a manner of sandwiching each guide portion 26B. Specifically, the width of a pair of auxiliary guide portions 29" (outer wall) in the direction separated from each other is formed to be slightly larger than the width of a pair of guide portions 26B in the direction separated from each other, and the diameter of the inner wall of the cylinder 42" is formed to be slightly smaller than the width of a pair of guide portions 26B in the direction separated from each other.

[0054] In addition, a pair of auxiliary guide portions 29" has a size that enables at least a portion of a pair of guide portions 26B to be located between the inner wall of the cylinder 42" and the (outer wall) of each auxiliary guide portion 29" at the non-actuated position and the actuated position of the operating rod 26. Thus, the inner wall of the cylinder 42" and each auxiliary guide portion 29" can be used to define the moving path of each guide portion 26B, so that each guide portion 26B can be used for guidance more stably.

[0055] Each guide portion 26B is arranged between the inner wall of the cylinder 42" and each auxiliary guide portion 29", in a manner of being in contact with the inner wall and each auxiliary guide portion 29" or separated with a small gap. Specifically, from the viewpoint of stably guiding the operating rod 26, the interval (gap) between each guide portion 26B and the inner wall of the cylinder 42" and / or each auxiliary guide portion 29" is preferably 0 mm or more, more preferably 1 mm or more, and further preferably 2 mm or more. Furthermore, from the viewpoint of suppressing poor pulling of the operating rod 26 and preventing liquid leakage, it is preferably 7 mm or less, more preferably 5 mm or less, and further preferably 2 mm or less. In addition, when each guide portion 26B is in contact with the inner wall of the cylinder 42" and / or each auxiliary guide portion 29", the contact pressure of each guide portion 26B relative to the inner wall of the cylinder 42" and / or each auxiliary guide portion 29" is preferably set within a range that does not hinder the pulling operation of the rod body 26A.

[0056] As described above, in the trigger-type liquid ejector 20" of the third embodiment, an auxiliary guide portion 29" for guiding each guide portion 26B is provided in a manner that each guide portion 26B is sandwiched between the inner wall of the cylinder 42". According to this trigger-type liquid ejector 20" of the third embodiment, in addition to having the advantages of the trigger-type liquid ejector 20 of the first embodiment mentioned above, it also has the advantage of being able to use each auxiliary guide portion 29" to more stably guide each guide portion 26B.

[0057] Although the preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes or improvements can be added to the above embodiments.

[0058] For example, in the above-mentioned second and third embodiments, the auxiliary guide parts 29', 29" are described as being provided on the head cover 28' or the cylinder 42", but this is not limited to this. The auxiliary guide parts 29', 29" may also be provided as separate components independent of these head cover 28' and cylinder 42".

[0059] It is clear from the description of the technical scope that the above-mentioned modifications are also included in the scope of the present invention.

[0060] With regard to the above-mentioned embodiment, the present invention further discloses the following trigger-type liquid ejector.

[0061] <1>

[0062] A trigger-type liquid ejector comprises: a main body having a built-in pump capable of sucking and pressurizing liquid in a container body; an operating rod which actuates the pump by being pulled relative to the main body; and a nozzle which ejects liquid by actuating the pump. In the trigger-type liquid ejector, the operating rod comprises a pair of guide portions extending in a pulling direction relative to the main body, and the pair of guide portions are arranged in a manner of sandwiching a portion of the main body.

[0063] <2>

[0064] The trigger-type liquid ejector as described in <1>, wherein:

[0065] The main body portion includes: a mounting portion configured to be mountable on the container body; a longitudinal tube portion extending from the mounting portion to the opposite side of the container body; and a transverse tube portion extending from the end of the longitudinal tube portion on the opposite side of the mounting portion to the direction in which the liquid is ejected. The pump includes: a cylindrical cylinder; and a piston that reciprocates in the cylinder by the reciprocating movement of the operating rod. The operating rod includes a rod main body portion, which extends from the transverse tube portion of the main body portion to the container body side, and a base end portion of the rod main body portion is swingably supported on the transverse tube portion. The pair of guide portions are formed so as to protrude from the rod main body portion to the longitudinal tube portion in a manner that clamps the cylinder.

[0066] <3>

[0067] The trigger-type liquid sprayer as described in <1> or <2>, wherein:

[0068] The pair of guide portions have a length in the protruding direction that allows the operating rod to reach a position sandwiching the cylinder tube when the operating rod is in a non-operating position away from the vertical tube portion.

[0069] <4>

[0070] A trigger-type liquid sprayer as described in any one of <1> to <3>, wherein:

[0071] The front ends of the pair of guide portions in the protruding direction are located at positions overlapping with the cylinder.

[0072] <5>

[0073] A trigger-type liquid sprayer as described in any one of <1> to <4>, wherein:

[0074] The pair of guide portions has a length in a protruding direction from the rear end portion of the rod body portion to the vertical tube portion.

[0075] <6>

[0076] A trigger-type liquid sprayer as described in any one of <1> to <5>, wherein:

[0077] The main body portion further includes a head cover, wherein the pair of guide portions are respectively located between the head cover and the cylinder.

[0078] <7>

[0079] A trigger-type liquid sprayer as described in any one of <1> to <6>, wherein:

[0080] The front ends of the pair of guide parts in the protruding direction are covered by the head cover in the non-operating position.

[0081] <8>

[0082] A trigger-type liquid sprayer as described in any one of <1> to <7>, wherein:

[0083] The head cover covers the vertical tube portion, the horizontal tube portion, and the holding portion.

[0084] <9>

[0085] A trigger-type liquid sprayer as described in any one of <1> to <8>, wherein:

[0086] The pair of guide portions are arranged so as to be in contact with the peripheral surface of the cylinder or to be spaced apart from each other with a gap therebetween.

[0087] <10>

[0088] A trigger-type liquid sprayer as described in any one of <1> to <9>, wherein:

[0089] The gap between each of the guide portions and the peripheral surface of the cylinder is greater than or equal to 0 mm and less than or equal to 7 mm.

[0090] <11>

[0091] A trigger-type liquid sprayer as described in any one of <1> to <10>, wherein:

[0092] A gap is formed between the head cover and the cylinder, and the pair of guide parts are capable of swinging in the gap.

[0093] <12>

[0094] A trigger-type liquid sprayer as described in any one of <1> to <11>, wherein:

[0095] The width of the one guide portion and the other guide portion in a direction spaced apart from each other is formed to be slightly smaller than the width of the head cover in a direction orthogonal to the ejection direction, and is formed to be slightly larger than the diameter of the cylinder.

[0096] <13>

[0097] A trigger-type liquid sprayer as described in any one of <1> to <12>, wherein:

[0098] The guide portions are arranged so as to be in contact with the inner surface of the head cover or to be spaced apart from it with a gap therebetween.

[0099] <14>

[0100] A trigger-type liquid sprayer as described in any one of <1> to <13>, wherein:

[0101] The gap between each of the guide portions and the inner surface of the head cover is greater than or equal to 0 mm and less than or equal to 7 mm.

[0102] <15>

[0103] A trigger-type liquid sprayer as described in any one of <1> to <1> to <14>, wherein:

[0104] The piston is engaged with the operating rod, and a force applying mechanism is also provided inside.

[0105] The urging mechanism urges the operating rod in a direction to return to the non-actuated position.

[0106] <16>

[0107] A trigger-type liquid sprayer as described in any one of <1> to <15>, wherein:

[0108] It also includes a nozzle for ejecting liquid to the outside through the operation of the pump,

[0109] The head cover covers the main body so as to extend to the vicinity of the nozzle.

[0110] <17>

[0111] A trigger-type liquid sprayer as described in any one of <1> to <16>, wherein:

[0112] An auxiliary guide portion is provided to guide the pair of guide portions.

[0113] <18>

[0114] A trigger-type liquid sprayer as described in any one of <1> to <17>, wherein:

[0115] The auxiliary guide portion is arranged on the head cover, and the head cover is configured to have a double-wall structure, which has an outer wall covering the main body and a pair of inner walls arranged on the inner side of the outer wall at a distance from the outer wall, and the pair of inner walls function as the auxiliary guide portion.

[0116] <19>

[0117] A trigger-type liquid sprayer as described in any one of <1> to <18>, wherein:

[0118] The pair of inner walls are arranged to face each other and are respectively integrated with the outer wall of the head cover.

[0119] <20>

[0120] A trigger-type liquid sprayer as described in any one of <1> to <19>, wherein:

[0121] A gap in which each of the guide portions can be arranged is formed between the outer wall of the head cover and the auxiliary guide portion, and the outer wall of the head cover and the auxiliary guide portion are arranged so as to sandwich each of the guide portions.

[0122] <21>

[0123] A trigger-type liquid sprayer as described in any one of <1> to <20>, wherein:

[0124] The pair of inner walls has a size that enables at least a portion of the pair of guide portions to be located between the outer wall and the inner wall of the head cover in the non-actuated position and the activated position of the operating lever.

[0125] <22>

[0126] A trigger-type liquid sprayer as described in any one of <1> to <21>, wherein:

[0127] The guide portions are disposed between the outer wall of the head cover and the auxiliary guide portions so as to be in contact with the outer wall and the auxiliary guide portions or to be spaced apart from the outer wall and the auxiliary guide portions with a gap therebetween.

[0128] <23>

[0129] A trigger-type liquid sprayer as described in any one of <1> to <22>, wherein:

[0130] The gap between each guide portion and the outer wall of the head cover and / or each auxiliary guide portion is greater than or equal to 0 mm and less than or equal to 7 mm.

[0131] <24>

[0132] A trigger-type liquid sprayer as described in any one of <1> to <23>, wherein:

[0133] The auxiliary guide portion is provided in the cylinder, and the cylinder is configured to have a double-wall structure having an inner wall for accommodating the piston and a pair of outer walls provided outside the inner wall at a distance from the inner wall, and the pair of outer walls function as the auxiliary guide portion.

[0134] <25>

[0135] A trigger-type liquid sprayer as described in any one of <1> to <24>, wherein:

[0136] A gap in which the guide portions can be arranged is formed between the inner wall of the cylinder and the outer walls, and the inner wall of the cylinder and the auxiliary guide portions are arranged so as to sandwich the guide portions.

[0137] <26>

[0138] A trigger-type liquid sprayer as described in any one of <1> to <25>, wherein:

[0139] The pair of auxiliary guide portions has a size that enables at least a portion of the pair of guide portions to be located between the inner wall and each outer wall of the cylinder at the non-actuated position and the activated position of the operating rod.

[0140] <27>

[0141] A trigger-type liquid sprayer as described in any one of <1> to <26>, wherein:

[0142] Each of the guide portions is disposed between the inner wall of the cylinder and the auxiliary guide portions so as to be in contact with the inner wall and the auxiliary guide portions or to be spaced apart from the inner wall and the auxiliary guide portions with a gap therebetween.

[0143] <28>

[0144] A trigger-type liquid sprayer as in any one of <1> to <27>, wherein:

[0145] The gap between each guide portion and the inner wall of the cylinder and / or each auxiliary guide portion is greater than or equal to 0 mm and less than or equal to 7 mm.

[0146] <29>

[0147] A trigger-type liquid sprayer as described in any one of <1> to <28>, wherein:

[0148] The pair of guide portions protrude in a substantially triangular shape from a rear surface of the rod body toward the vertical tube portion.

[0149] <30>

[0150] A trigger-type liquid sprayer as described in any one of <1> to <29>, wherein:

[0151] The pair of guide parts are formed of metal, wood, synthetic resin or the like.

[0152] Description of Reference Numerals

[0153] 10: Container body

[0154] 12: Mouth

[0155] 20, 20', 20": Trigger Liquid Sprayer

[0156] 22: Install the cover

[0157] 24: Nozzle

[0158] 26: Joystick

[0159] 26A: Rod body

[0160] 26B: Guide

[0161] 28, 28': Head cover

[0162] 29', 29": Auxiliary guide

[0163] 30: Main body

[0164] 32: Neck

[0165] 34: Longitudinal tube

[0166] 35: Liquid inlet

[0167] 35a: Connecting hole

[0168] 35b: Suction valve

[0169] 35c: Ejection valve

[0170] 36: Horizontal tube

[0171] 37: Tube

[0172] 38: Maintaining Department

[0173] 40: Pump

[0174] 42, 42”: Cylinder

[0175] 44: Piston

[0176] 45: Sealing part

[0177] 46: Pump Room

[0178] 47: Coil spring.

Claims

1. A trigger-type liquid sprayer, comprising: Main body, It has a built-in pump capable of sucking and pressurizing the liquid in the container body; an operating rod that actuates the pump by being pulled relative to the main body; and a nozzle, which ejects liquid through the actuation of the pump, wherein the trigger-type liquid ejector is characterized in that: The operating rod includes a pair of guide portions extending in a pulling direction relative to the main body portion, The pair of guide portions are arranged so as to sandwich a portion of the main body portion. The main body comprises: A mounting portion configured to be mountable on the container body; a longitudinal cylindrical portion extending from the mounting portion to the opposite side of the container body; and a transverse tube portion extending from an end portion of the longitudinal tube portion on the side opposite to the mounting portion toward a direction in which the liquid is ejected, The pump includes: a cylindrical cylinder; and a piston that reciprocates in the cylinder by the reciprocating movement of the operating rod. The operating lever includes a lever body portion extending from the horizontal tube portion of the main body portion toward the container body side, and a base end portion of the lever body portion is swingably supported by the horizontal tube portion. The pair of guide portions are formed to protrude from the rod body portion toward the vertical tube portion so as to sandwich the cylinder tube.

2. The trigger type liquid sprayer according to claim 1, characterized in that: The pair of guide portions have a length in the protruding direction that allows the operating rod to reach a position sandwiching the cylinder tube when the operating rod is in a non-operating position away from the vertical tube portion.

3. The trigger type liquid sprayer according to claim 1 or 2, characterized in that: The front ends of the pair of guide portions in the protruding direction are located at positions overlapping with the cylinder.

4. The trigger type liquid sprayer according to claim 1 or 2, characterized in that: The pair of guide portions has a length from the rear end portion of the rod body portion to the protruding direction of the vertical tube portion.

5. The trigger type liquid sprayer according to claim 1 or 2, characterized in that: Also includes a head cover covering the main body, The pair of guide portions is configured to be located between the head cover and the cylinder, respectively.

6. The trigger type liquid sprayer according to claim 5, characterized in that: The front ends of the pair of guide portions in the protruding direction are covered by the head cover in the non-operating position.

7. The trigger type liquid sprayer according to claim 5, characterized in that: The head cover covers the vertical tube portion, the horizontal tube portion, and the holding portion.

8. The trigger type liquid sprayer according to claim 1 or 2, characterized in that: The pair of guide portions are arranged in contact with the peripheral surface of the cylinder or spaced apart from each other with a gap therebetween.

9. The trigger type liquid sprayer according to claim 8, characterized in that: The gap between each of the guide portions and the peripheral surface of the cylinder is greater than or equal to 0 mm and less than or equal to 7 mm.

10. The trigger type liquid sprayer according to claim 5, characterized in that: A gap is formed between the head cover and the cylinder, and the pair of guide parts can swing in the gap.

11. The trigger type liquid sprayer according to claim 10, characterized in that: The width of the guide portion in a direction in which the guide portion is spaced apart from the other guide portion is formed to be slightly smaller than the width of the head cover in a direction perpendicular to the ejection direction, and is formed to be slightly larger than the diameter of the cylinder.

12. The trigger type liquid sprayer according to claim 5, characterized in that: Each of the guide portions is arranged so as to be in contact with the inner surface of the head cover or to be spaced apart from it with a gap therebetween.

13. The trigger type liquid sprayer according to claim 12, characterized in that: The gap between each of the guide portions and the inner surface of the head cover is greater than or equal to 0 mm and less than or equal to 7 mm.

14. The trigger type liquid sprayer according to claim 1 or 2, characterized in that: The piston is engaged with the operating rod, and a force applying mechanism is also provided inside. The urging mechanism urges the operating rod in a direction to return to the non-actuated position.

15. The trigger type liquid sprayer according to claim 5, characterized in that: Also includes a nozzle for ejecting liquid to the outside by the operation of the pump, The head cover covers the main body so as to extend to the vicinity of the nozzle.

16. The trigger type liquid sprayer according to claim 1 or 2, characterized in that: An auxiliary guide portion is provided to guide the pair of guide portions.

17. The trigger type liquid sprayer according to claim 16, characterized in that: Also includes a head cover covering the main body, The auxiliary guide portion is provided on the head cover, The head cover is configured to have a double-wall structure including an outer wall covering the main body and a pair of inner walls provided inside the outer wall at a distance from the outer wall, and the pair of inner walls function as the auxiliary guide portion.

18. The trigger type liquid sprayer according to claim 17, characterized in that: The pair of inner walls are arranged to face each other and are respectively integrated with the outer wall of the head cover.

19. The trigger type liquid sprayer according to claim 17, characterized in that: A gap is formed between the outer wall of the head cover and the auxiliary guide portion to allow each of the guide portions to be arranged. The outer wall of the head cover and the auxiliary guide portion are arranged so as to sandwich the guide portions.

20. The trigger type liquid sprayer according to claim 17, characterized in that: The pair of inner walls has a size that enables at least a portion of the pair of guide portions to be located between the outer wall and the inner wall of the head cover in the non-actuated position and the activated position of the operation lever.

21. The trigger type liquid sprayer according to claim 17, characterized in that: Each of the guide portions is disposed between the outer wall of the head cover and each of the auxiliary guide portions so as to be in contact with or spaced apart from the outer wall and each of the auxiliary guide portions with a gap therebetween.

22. The trigger type liquid sprayer according to claim 21, characterized in that: The gap between each of the guide portions and the outer wall of the head cover and / or each of the auxiliary guide portions is greater than or equal to 0 mm and less than or equal to 7 mm.

23. The trigger type liquid sprayer according to claim 16, characterized in that: The pump includes: a cylindrical cylinder; and a piston that reciprocates in the cylinder by the reciprocating movement of the operating rod. The auxiliary guide portion is provided on the cylinder, The cylinder is configured to have a double-wall structure including an inner wall for accommodating the piston and a pair of outer walls provided outside the inner wall at a distance from the inner wall, and the pair of outer walls function as the auxiliary guide portion.

24. The trigger type liquid sprayer according to claim 23, characterized in that: A gap in which each of the guide portions can be disposed is formed between the inner wall of the cylinder and each of the outer walls. The inner wall of the cylinder and the auxiliary guide portions are arranged so as to sandwich the guide portions.

25. The trigger type liquid sprayer according to claim 23, characterized in that: The pair of auxiliary guide portions has a size such that at least a portion of the pair of guide portions can be located between the inner wall and each outer wall of the cylinder at the non-actuated position and the activated position of the operating rod.

26. The trigger type liquid sprayer according to claim 23, characterized in that: Each of the guide portions is disposed between the inner wall of the cylinder and each of the auxiliary guide portions so as to be in contact with the inner wall and each of the auxiliary guide portions or to be spaced apart from the inner wall and each of the auxiliary guide portions with a gap therebetween.

27. The trigger type liquid sprayer according to claim 26, characterized in that: The gap between each of the guide portions and the inner wall of the cylinder and / or each of the auxiliary guide portions is greater than or equal to 0 mm and less than or equal to 7 mm.

28. The trigger type liquid sprayer according to claim 1 or 2, characterized in that: The pair of guide portions protrude from the rear surface of the rod body portion toward the vertical tube portion in a substantially triangular shape.

29. The trigger type liquid sprayer according to claim 1 or 2, characterized in that: The pair of guide parts are formed of metal, wood or synthetic resin.

Images