JP2004261790A - Trigger type liquid sprayer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent the damage of a nozzle in case of falling of a trigger type liquid sprayer. <P>SOLUTION: The trigger type liquid sprayer 10 provided with the nozzle 20 in the front of a trigger body 14 is constituted by covering at least an upper side of the nozzle 20 by a shroud 30 supported at the trigger body 14 and interposing a buffer means 40 between the shroud 30 and the trigger body 14. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a trigger type liquid ejector.
[0002]
[Prior art]
As described in Patent Literature 1, there is a trigger-type liquid ejector provided with a trigger cover for enclosing the nozzle in order to protect the nozzle at the time of falling during a distribution stage. The trigger cover is folded and locked in the internal space at the rear of the trigger body in order to cover the nozzle and prevent accidental detachment during the flow of the trigger type liquid ejector. The trigger cover is removed and removed from the trigger body at the stage of using the trigger type liquid ejector.
[0003]
[Patent Document 1]
JP-A-2002-2841 (1 page, FIG. 1)
[0004]
[Problems to be solved by the invention]
The trigger cover disclosed in Patent Document 1 attempts to protect the nozzle when the trigger-type liquid ejector drops during the distribution stage of the trigger-type liquid ejector. And is directly supported by the nozzle. Even if a cushion material is sandwiched between the trigger cover and the nozzle, the trigger cover is indirectly supported by the nozzle.
[0005]
Therefore, when the trigger-type liquid ejector falls upside down while containing the content liquid, the impact load acting on the trigger cover is directly applied to the nozzle or via the cushion material. As long as the impact load reaches the nozzle, damage to the nozzle cannot be reliably prevented.
[0006]
When the thickness of a component is reduced for the purpose of reducing the weight of a trigger type liquid ejector, it is necessary to more reliably improve the durability against an impact load.
[0007]
Incidentally, the trigger cover of Patent Document 1 is removed from the trigger body at the stage of using the trigger type liquid ejector, and there is no place to protect the nozzle at the stage of use.
[0008]
It is an object of the present invention to reliably prevent damage to a nozzle at the time of falling in a trigger type liquid ejector.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 is a trigger type liquid ejector in which a nozzle is provided at a front portion of a trigger body, wherein at least an upper side of the nozzle is covered by a shroud supported by the trigger body, and the shroud and the trigger body are A buffer means is interposed between them.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, the trigger type liquid ejector 10 fixes the liquid passing through 12 connected to the opening of the container 11 to the container 11 with a cap 13 screwed to the container 11. In the trigger type liquid ejector 10, the trigger body 14 is fitted to the liquid passage 12 to be integrated (the liquid passage 12 and the trigger body 14 may be integrally formed), and the main cylinder 14A of the trigger body 14 is Standing from the side, a cylinder cylinder 14B protrudes forward from an intermediate portion of the main cylinder 14A, and an injection cylinder 14C protrudes forward from the upper end of the main cylinder 14A.
[0011]
The trigger type liquid ejector 10 is configured such that the upper end of the trigger lever 15 is rotatably pivotally connected to both front outer sides of the injection cylinder 14C of the trigger body 14, and the front end of the plunger 17 fitted to the cylinder cylinder 14B. The rear surface of the intermediate portion of the trigger lever 15 is engaged with the portion, and the trigger lever 15 is resiliently moved forward through the plunger 17 by the spring 18 built in the cylinder cylinder 14B.
[0012]
In the trigger type liquid ejector 10, the connecting tube 19 is fitted to the front end small outer diameter portion of the injection tube 14 </ b> C of the trigger body 14, and the nozzle 20 is rotatably fitted to the front end outer diameter portion of the connecting tube 19. The nozzle 20 includes a rotation operation lever 20A. The trigger type liquid ejector 10 switches the liquid discharge path formed by the connecting cylinder 19 and the nozzle 20 by opening and closing the nozzle 20 by turning the nozzle 20A by the turning operation lever 20A.
[0013]
The trigger type liquid ejector 10 has a dip tube 21 extending into the container 11 inserted into a lower end portion of the liquid 12, and an inlet check valve 22 and an outlet check valve 23 provided inside the liquid 12. ing.
[0014]
Thus, in the trigger type liquid ejector 10, the liquid in the cylinder cylinder 14 </ b> B is ejected from the nozzle 20 via the outlet check valve 23 by the pressurizing operation of the plunger 17 based on the pulling operation of the trigger lever 15. . Further, the liquid in the container 11 is sucked into the cylinder tube 14B via the inlet-side check valve 22 by the return operation of the plunger 17 based on the release of the pull operation of the trigger lever 15.
[0015]
As shown in FIG. 1, the trigger type liquid ejector 10 is supported by the trigger body 14 and covers the upper surface, the rear surface, and both side surfaces of the trigger body 14 by a shroud 30 that covers the upper side and the both sides (see FIG. In FIG. 1, the upper portion of both sides is covered, however, all of the both sides may be covered), and the buffer means 40 is interposed between the shroud 30 and the trigger body 14.
[0016]
The shroud 30 is attachable from behind the main cylinder 14A of the trigger body 14 so as to cover the main cylinder 14A, the cylinder cylinder 14B, and the injection cylinder 14C. A top surface 32 extending to the front end of the nozzle 20 along the injection cylinder 14C, a bottom surface 33 extending from a lower portion of the back surface 31 to a rear portion of the main cylinder 14A, and the trigger body 14 extending from both side edges of the back surface 31, the top surface 32 and the bottom surface 33. (The main cylinder 14A, the cylinder cylinder 14B, and the injection cylinder 14C), and both side surfaces 34 that cover the front end of the nozzle 20. The front portions of the top surface 32 and both side surfaces 34 of the shroud 30 extend to a position in front of the front end of the nozzle 20 (or a position flush with the front end), and have a gap G with respect to the entire circumference around the nozzle 20. .
[0017]
The upper locking portion 35A provided on the inner surface of the top surface 32 of the shroud 30 is locked to the locking portion 35B provided on the upper surface of the main cylinder 14A or the injection cylinder 14C of the trigger body 14, and provided on the inner surface on the front end side of the bottom surface 33. By locking the lower locking portion 36A to a locking portion 36B provided on the rear surface of the main cylinder 14A of the trigger body 14, the shroud 30 is supported on the trigger body 14 in a locked and fixed state.
[0018]
The shock-absorbing means 40 is provided in the injection cylinder 14C of the trigger body 14 at a position immediately behind a portion where the nozzle 20 (in the present embodiment, the nozzle 20 and the connection cylinder 19) is attached, in a circumferential direction. Are formed integrally at each of two places sandwiched between the ribs 41, and are constituted by ribs 41, 41 protruding from the injection cylinder 14C. The ribs 41, 41 are obliquely upward from the injection cylinder 14C so that the center line of each rib 41 (the center axis L (FIG. 2) along the rising direction of the rib 41 rising from the injection cylinder 14C) does not coincide with the vertical direction. It is protruded toward. Each rib 41 is arranged in contact with (or opposed via a minute gap) the inner surface of the top surface 32 of the shroud 30.
[0019]
The rib 41 of the present embodiment has a square rod shape (a round rod shape is also possible), and is intermediate in a height direction (a projecting direction of the rib 41) on one side surface (a plurality of side surfaces such as two opposing side surfaces are also possible). A weak portion 41A formed by providing a V-shaped notch in a part of the portion is provided.
[0020]
As shown in FIGS. 4 and 5, the rib 41 may be formed in a flat plate projecting from the injection cylinder 14C along the longitudinal direction of the injection cylinder 14C of the trigger body 14. The rib 41 shown in FIGS. 4 and 5 includes weak portions 41A and 41A formed by providing a V-shaped notch in a part of a middle part of two opposing side surfaces in the height direction.
[0021]
In the present invention, "upper" and "upper" mean vertically above when the container 11 provided with the trigger type liquid ejector 10 is erected on a horizontal plane.
[0022]
According to the present embodiment, the following operations are provided.
(Action corresponding to claim 1)
(1) The shroud 30 covers the upper side of the nozzle 20 while being supported by the trigger body 14. Therefore, when the trigger-type liquid ejector 10 falls in an upside-down direction while containing the content liquid, the impact load acting on the shroud 30 reaches the trigger body 14 and does not reach the nozzle 20. Since the impact load does not reach the nozzle 20, damage to the nozzle 20 can be reliably prevented.
[0023]
(2) The impact load acting on the shroud 30 reaches the trigger body 14 via the buffer means 40. Therefore, it is possible to prevent the trigger body 14 from being damaged by the impact load.
[0024]
(Action corresponding to claim 2)
{Circle around (3)} The buffer means 40 of the above paragraph {circle around (2)} is composed of the ribs 41 with the fragile portions 41A, so that the shock load can be reliably buffered.
[0025]
(Action corresponding to claim 3)
(4) Since the center line of the rib 41 is set so as not to coincide with the vertical direction, when the trigger type liquid ejector 10 falls in the reverse direction, the trigger type liquid ejector 10 extends from the shroud 30 to the injection cylinder 14C of the body 14 via the rib 41. The force is reduced, and the impact load applied to the injection cylinder 14C is further reduced.
[0026]
(Action corresponding to claim 5)
{Circle around (5)} The shroud 30 has a gap G around the entire circumference of the nozzle 20. Therefore, it is possible to reliably avoid the impact load acting on the shroud 30 from being applied to the nozzle 20, and to surely prevent the nozzle 20 from being damaged.
[0027]
FIG. 6 shows a modification of the trigger type liquid ejector 10. This modification differs from that of FIG. 1 described above in that the buffer means 40 is constituted by a spring body 51. That is, as shown in FIG. 7, the buffer means 40 is integrally formed on the top of the upper surface of the injection cylinder 14C at a position immediately behind the injection cylinder 14C of the trigger body 14 where the nozzle 20 is attached. It is composed of a cantilevered spring body 51 projecting from 14C. The spring body 51 has a flat plate shape having a curved portion in a projecting direction (rising direction) from the injection cylinder 14C. The spring body 51 is disposed in contact with (or opposed via a minute gap) the inner surface of the top surface 32 of the shroud 30.
[0028]
Incidentally, the buffer means 40 may be one in which each of the two spring bodies 51, 51 is integrally formed at each of two places sandwiching the top of the upper surface of the injection cylinder 14C in the circumferential direction. Then, the spring bodies 51, 51 may be protruded obliquely upward from the injection cylinder 14C such that the center line of each spring body 51 does not coincide with the vertical direction.
[0029]
Further, as shown in FIG. 8, the spring body 51 of the buffering means 40 may be formed in a flat plate shape having a bent portion in a projecting direction (rising direction) from the injection cylinder 14C.
[0030]
(Action corresponding to claim 4)
Even in the trigger type liquid ejector 10 of FIGS. 6 to 8, the shock load can be reliably buffered by forming the buffer means 40 by the spring body 51.
[0031]
Note that the shroud 30 is not formed as a separate part from the trigger body 14, but may be integrally formed.
[0032]
Further, the buffer means 40 is not limited to the one provided on the trigger body 14 side, and may be provided on the shroud 30 side.
[0033]
Further, the rib 41 and the spring body 51 may be formed integrally with the trigger body 14 or the shroud 30, or may be formed as separate parts from the trigger body 14 or the shroud 30 and attached to the trigger body 14 or the shroud 30.
[0034]
Further, the buffer means 40 is not limited to the rib 41, and may be formed of an elastic member such as rubber, sponge, or the like.
[0035]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, in a trigger type liquid ejector, the damage of the nozzle at the time of falling can be prevented reliably.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a trigger type liquid ejector.
FIG. 2 is a sectional view taken along line II-II in FIG.
FIG. 3 is a perspective view showing a rib of FIG. 2;
FIG. 4 is a sectional view of a main part showing a modification of the trigger type liquid ejector.
FIG. 5 is a perspective view showing a rib of FIG. 4;
FIG. 6 is a sectional view showing a modified example of the trigger type liquid ejector.
FIG. 7 is a schematic view showing the spring body of FIG. 6;
FIG. 8 is a schematic view showing a modified example of a spring body.
[Explanation of symbols]
Reference Signs List 10 Trigger type liquid ejector 14 Trigger body 20 Nozzle 30 Shroud 40 Buffer means 41 Rib 41A Fragile portion 51 Spring body

Claims (5)

A trigger type liquid ejector comprising a nozzle provided at a front portion of a trigger body,
A trigger type liquid ejector in which at least an upper side of the nozzle is covered by a shroud supported by the trigger body, and a buffer means is interposed between the shroud and the trigger body. The trigger type liquid ejector according to claim 1, wherein the shock-absorbing means includes one or more ribs provided on one of the trigger body and the shroud, the ribs having a fragile portion. The trigger type liquid ejector according to claim 1, wherein the rib provided with the weak portion, wherein the buffering means is provided on one of the trigger body and the shroud, is installed such that the center line of the rib does not coincide with the vertical direction. 2. The trigger type liquid ejector according to claim 1, wherein said buffer means comprises a spring body. A trigger type liquid ejector comprising a nozzle provided at a front portion of a trigger body,
A trigger type liquid ejector that covers at least the upper side of the nozzle by a shroud supported by the trigger body, and the shroud has a gap around the entire circumference of the nozzle.

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