JP6180926B2 - Trigger type liquid ejector - Google Patents

Description

  The present invention relates to a trigger type liquid ejector, and more particularly, to a shroud that covers most of the ejector and a main body that holds the shroud.

  In containers containing liquids such as wrinkle removers and detergents, clothing glue, residential wax, hairdressing agents, fragrances, etc., they are attached to the mouth of the container, and by checking the operation lever, A trigger type liquid ejector that drives the provided pump to eject the liquid in the container in a linear, mist, or foam form is widely used (for example, see Patent Document 1). It enables supply.

  As shown in FIGS. 1 and 2 of Patent Document 1, the ejector includes a shroud (cover in Patent Document 1) that covers the entire ejector while leaving an operation lever and a nozzle. The aesthetic appearance is enhanced by mounting on the main body (the ejector body in Patent Document 1).

Japanese Patent Laid-Open No. 11-290731

  The shroud in the ejector of Patent Document 1 is provided with one claw portion extending rearward from the lower portion of the main body portion, and by engaging this claw portion with the inner surface of the bottom wall of the shroud, In addition to preventing the slipping out, the shroud is prevented from coming off upward. By the way, if this claw part is bent, the shroud may be inadvertently detached. Therefore, in Patent Document 1, a reinforcing rib is provided at the connecting part between the claw part and the main body part, and the thickness of the claw part is increased. It is thick so that the claw portion does not bend easily. For this reason, there exists a problem that the resin amount required for formation of a nail | claw part increases.

  An object of the present invention is to solve such problems, and the object of the present invention is to firmly hold and hold the shroud without using a claw portion having high rigidity as in the prior art. A new trigger-type liquid ejector can be proposed.

The present invention includes a main body provided with a pump that sucks, pressurizes, and pumps the content liquid in the container, an operation lever that is supported by the main body so as to be swingable and drives the pump by repeating the check, A trigger-type liquid ejector comprising a nozzle provided in front of the main body for ejecting pressurized pressurized liquid toward the outside, and a shroud for covering the main body while leaving the operation lever and nozzle. ,
The main body includes a connecting cylinder that holds a mounting cap attached to the mouth of the container, and a horizontal cylinder that feeds the content liquid to the nozzle through an internal passage,
A lateral groove is provided on each of both sides of the connecting cylinder, and an upper wall extending toward the inner surface of the upper wall of the shroud is provided above the main body,
The shroud enters the lateral groove, guides the sliding movement of the shroud and constrains the shroud in the vertical direction, protrudes from the inner surface of the upper wall, enters a recess provided in the upper wall, and enters the shroud have a and retaining holding projections a,
The connecting cylinder includes a pair of horizontal ribs that protrude from the outer peripheral surface of the connecting cylinder and include the horizontal groove therebetween.
The transverse ribs are trigger type liquid sprayer to have the R portion or inclined portion to guide the entry of the said transverse groove of said bottom wall.

  It is preferable that a pair of the upper walls is provided across the axis of the horizontal cylinder, and a pair of positioning ribs sandwiching the pair of upper walls are provided on the inner surface of the upper wall.

  In the trigger type liquid ejector of the present invention, a lateral groove is provided on each side of the connecting cylinder provided in the main body, and an upper wall extending toward the upper wall inner surface of the shroud is provided above the main body. Provided. Further, the shroud is provided with a bottom wall that enters the lateral groove and a protrusion that protrudes from the inner surface of the upper wall and enters a recess provided in the upper wall. Thereby, since a shroud can be slid by the cooperation of a horizontal groove and a bottom wall, a shroud can be attached easily. Further, since the bottom wall is restrained in the vertical direction by the lateral groove, even if the shroud is pulled up, it is not easily detached from the main body. Further, since the claw portion of the shroud enters the recess provided in the upper wall of the main body portion, the shroud can be retained and retained. Such a lateral groove can be provided between the lateral ribs by projecting a pair of lateral ribs from the outer peripheral surface of the connecting cylinder.

  When the lateral rib is provided with an R portion or an inclined portion that guides the bottom wall into the lateral groove, the positioning is facilitated when the bottom wall is inserted into the lateral groove.

  When a pair of upper walls are provided across the axis of the horizontal cylinder and a pair of positioning ribs that sandwich the pair of upper walls are provided on the inner surface of the upper wall, the shroud rotates around the connecting part of the main body and is displaced. It is possible to effectively prevent malfunctions that occur.

It is sectional drawing in the side view which shows one Embodiment of the trigger type liquid ejector according to this invention. It is a figure explaining the assembly | attachment state of the main-body part (body) and shroud shown in FIG. Regarding the main body (body) shown in FIG. 1, (a) is a side view and (b) is a rear view. It is a top view of the main-body part (body) shown in FIG. Regarding the shroud shown in FIG. 1, (a) is a front view and (b) is a side view. FIG. 6 is a bottom view of the shroud shown in FIG. 5.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. In the present specification, claims, abstract, and drawings, the side on which the upper wall of the shroud described later is located is the upper side (upper side in FIG. 1), and the side on which the mounting cap is provided is the lower side (in FIG. 1). Lower side). The side on which the nozzle is provided is the front (left side in FIG. 1), and the opposite side is the rear (right side in FIG. 1). Further, a direction orthogonal to the vertical direction and the front-rear direction (a direction perpendicular to the paper surface in FIG. 1) is defined as a side (left-right direction).

  The code | symbol 1 in FIG. 1 shows one Embodiment of a trigger type | formula liquid ejector. The trigger type liquid ejector 1 includes a mounting cap 2 attached to the mouth of the container C, a pump that holds the mounting cap 2 in a rotatable and non-removable manner, and sucks, pressurizes, and pumps the content liquid in the container C. A main body part 3, a pipe 4 that is connected to the main body part 3 and extends toward the bottom of the container C and sucks up the liquid content in the container C by driving the pump, and is provided in front of the main body part 3. Nozzle 5 that ejects the content liquid toward the outside, an operation lever 6 that is swingably held in the main body 3 and that drives the pump by repeating the check, and a spring member that applies a restoring force to the operation lever 6 7 and a shroud 8 that covers the main body 3.

  The mounting cap 2 has, on the inner surface of the cylindrical side wall 2a, a screw portion 2b that fits a screw portion provided at the mouth of the container C. A top wall 2d having an upper opening 2c at the center is provided above the side wall 2a.

  In the present embodiment, the main body 3 is composed of a plurality of members, and the mounting cap 2 is attached to a body 30 that forms one of them. Below the body 30, there is provided a cylindrical connecting cylinder 30 a whose lower part is inserted into the upper opening 2 c. The connecting cylinder 30a includes a flange 30b extending outward in the radial direction on the outer peripheral surface thereof. Since the mounting cap 2 attached to the body 30 is prevented from being detached by the flange 30b and is rotatably held with respect to the connecting cylinder 30a, the body 30 is attached to the container C by rotating only the mounting cap 2. be able to. A packing P sandwiched between the container C and the flange 30b is provided below the flange 30b.

  Further, the connecting cylinder 30a will be described in detail with reference to FIGS. The connecting cylinder 30a includes a pair of lateral ribs 30a2 that protrude from the outer peripheral surface of the connecting cylinder 30a and that include a lateral groove 30a1 therebetween. As shown in FIG. 3A, an R portion 30a3 is provided behind the lower lateral rib 30a2. Further, the connecting cylinder 30a is provided with a top wall 30c extending radially inward at the upper edge thereof, and a pair of plate-like walls 30c1 standing upward are provided on both sides of the top wall 30c. It has been. The plate-like wall 30c1 is connected to a reinforcing rib 30c2 that is bridged between cylinders described later. In addition, it is good also as a recessed part extended in the front-back direction in the outer peripheral surface of the connection cylinder 30a, and making this recessed part into the horizontal groove 30a1.

  As shown in FIG. 1, a vertical cylinder 30d is provided above the connecting cylinder 30a and is eccentric to the rear of the connecting cylinder 30a and has a smaller diameter than the connecting cylinder 30a. Is provided with a horizontal cylinder 30e extending forward. Here, the inside of the vertical cylinder 30d and the internal passage of the horizontal cylinder 30e are connected via a hole Ha. Further, a plate-like wall 30f extending upward and laterally is provided on the front side of the horizontal cylinder 30e, and the plate-like wall 30f has a columnar portion 30g protruding forward and a radial direction of the columnar portion 30g. A cylindrical portion 30h located outside is provided. As shown in FIG. 4, a pair of side walls 30i are provided on both sides of the horizontal cylinder 30e with a gap therebetween. In addition, although mentioned later for details, the lower end 30i1 (refer FIG. 3 (a), (b)) of the side wall 30i is comprised so that it may link with the shroud 8 at the time of an assembly. Further, as shown in FIG. 4, the side wall 30i is provided with an upwardly open groove 30j having a U shape in a side view.

  Further, as shown in FIGS. 3 and 4, an upper wall 30n is provided above the horizontal cylinder 30e so as to extend along the extending direction of the horizontal cylinder 30e and to stand upward. In the present embodiment, a pair is provided across the axis of the horizontal cylinder 30e. At the rear of each upper wall 30n, there are provided two recesses 30p in which the top of the upper wall 30n is recessed. A rear end wall 30q connected to the pair of side walls 30i is provided at the rear end of the upper wall 30n.

  As shown in FIG. 1, a cylindrical cylinder 30k protruding forward from the vertical cylinder 30d is provided below the horizontal cylinder 30e, and concentric with the cylinder 30k on the radially inner side of the cylinder 30k. A cylindrical partition tube portion 30m that is double-arranged is provided. A hole Hb that penetrates the vertical cylinder 30d is provided between the cylinder 30k and the partition cylinder part 30m, and a hole Hc that penetrates the vertical cylinder 30d is provided inside the partition cylinder part 30m. Further, the cylinder 30k is provided with a hole Hd (external air introduction port) that communicates the inside and the outside. Further, as shown in FIGS. 3A and 3B, a rib (stopper rib) 30k1 is provided on the outer peripheral surface of the cylinder 30k.

  As shown in FIG. 1, a cylindrical intake 31 is provided in the vertical cylinder 30d. A flange 31a extending radially outward is provided below the intake 31. The flange 31a is provided with a hole He that communicates with an outside air inlet Hd provided in the cylinder 30k. The pipe 4 is fitted and held at the lower end of the intake 31. Furthermore, a discharge valve seat 31b having a hole Hf at the center and increasing in diameter upward and on which a later-described discharge valve body is seated is provided at an intermediate portion of the internal passage of the intake 31. A hole Hg that communicates with the hole Hc is provided above the discharge valve seat 31b, a hole Hh that communicates with the hole Hb is provided above the hole Hg, and a hole Ha communicates with the hole Ha above the hole Hh. A notch K is provided.

  A valve body 32 is provided inside the intake 31. The valve body 32 includes a base portion 32 a that is held immovably within the intake 31. The base portion 32a is fitted and held at the lower end portion (having a flat plate shape) at a step portion provided in the intake 31, and the upper end portion (having a rod shape) is held in contact with the protrusion of the vertical cylinder 30d. Is done. In addition, the rib 32a1 arrange | positioned intermittently in the circumferential direction is provided in the intermediate part of the base 32a. Further, an elastic portion 32b that is integrally connected to the base portion 32a is provided at the lower end portion of the base portion 32a, and a discharge valve body 32c that is integrally connected to the elastic portion 32b and is seated on the discharge valve seat 31b is provided. It has been. In addition, a suction valve body 32d whose diameter increases upward and whose tip end elastically contacts the inner peripheral surface of the intake 31 is provided on the upper portion of the rib 32a1.

  A piston 33 is provided inside the cylinder 30k. The piston 33 has an annular sliding portion 33a that slidably contacts the inner peripheral surface of the cylinder 30k. The sliding portion 33a extends forward and has an end on the front side. A closed peripheral wall portion 33b is provided. Further, an engagement hole 33c that engages with the operation lever 6 described above is provided at the front end of the peripheral wall portion 33b. In addition, the sliding part 33a is provided in the position which block | closes the external air inlet Hd of the cylinder 30k in the state in which the operation lever 6 is not checked.

  As described above, in the present embodiment, the body 30, the intake 31, the valve body 32, the piston 33, and the packing P constitute the main body 3 having a pump function.

  In this embodiment, the nozzle 5 includes two members, a base body 50 attached to the body 30 and a nozzle cover 51 attached to the base body 50.

  The base body 50 has a vertical wall 50a disposed on the front side of a columnar portion 30g provided on the body 30, and the vertical wall 50a surrounds the columnar portion 30g and extends rearward. A wall 50b and an outer cylindrical wall 50c that comes into contact with the inner peripheral surface of the cylindrical portion 30h are provided on the radially outer side of the inner cylindrical wall 50b. Thereby, the nozzle 5 is hold | maintained so that rotation centering on the cylindrical part 30g is possible. The base body 50 is held against the body 30 (for example, a claw portion is provided on the plate-like wall 30f, and a claw portion that engages with the claw portion is provided on the base body 50). Here, a through hole 50d penetrating the vertical wall 50a is provided inside the inner cylindrical wall 50b, and the outer peripheral surface of the cylindrical portion 30g and the inner peripheral surface of the inner cylindrical wall 50b are respectively in the front-rear direction. An extending groove is provided. As a result, the base 50 is rotated and the mutual grooves are brought together, so that the internal passage of the horizontal cylinder 30e and the through hole 50d communicate with each other and the liquid can be ejected, while these grooves are displaced. The non-communication between the internal passage of the horizontal cylinder 30e and the through hole 50d can prevent the content liquid from being ejected. An outer wall 50e having a rectangular cross-sectional shape is provided on the outer side in the radial direction of the outer cylindrical wall 50c.

  The nozzle cover 51 includes a connecting portion 51a held by the base body 50 (the connecting portion 51a of the present embodiment includes a claw portion that engages with a hole provided in the vertical wall 50a), and a hinge 51b on the connecting portion 51a. And a collision wall 51d formed with an outlet 51c for ejecting the content liquid toward the outside. The ejection port 51c is provided so as to be positioned in front of the through hole 50d when the collision wall 51d is folded by the hinge 51b (at this time, the folded collision wall 51d is engaged and held by the outer wall 50e). It has been.

  The operating lever 6 has a front wall 6a and a pair of side walls 6b provided on both sides of the front wall 6a. Above each of the side walls 6b, a circle linked to the groove 30j of the body 30 in a swingable manner. A columnar pivot shaft 6c is provided. In addition, an escape hole 6d that penetrates the front wall 6a and avoids interference with the piston 33 is provided in an intermediate portion of the operation lever 6, and the side of the escape hole 6d is linked to the engagement hole 33c. A cylindrical convex portion 6e is provided.

  The spring member 7 is held between the horizontal cylinder 30e of the body 30 and the cylinder 30k at the rear of the operation lever 6, and extends downward while curving while extending forward. Yes, the operation lever 6 is always given a biasing force toward the front.

  The shroud 8 includes an upper wall 8a provided above and a pair of side walls 8b extending downward from the side of the upper wall 8a. A bottom wall 8c is provided at the lower rear end of the side wall 8b. ing. Further, as shown in FIGS. 5 (a), 5 (b) and 6, on the inner surface of both side walls 8b, a lateral wall 8d1 extending in the front-rear direction below and an inner edge of the lateral wall 8d1 downward. A guide rib 8d that is configured by an extending vertical wall 8d2 and that has an L-shaped cross section is provided. Further, above the both side walls 8b, an upper horizontal wall 8e1 that protrudes inward from the inner surface and extends in the front-rear direction, and an upper vertical wall 8e2 that extends upward from the inner edge of the upper horizontal wall 8e1. The upper guide rib 8e comprised by these is provided. Further, the guide rib 8e includes a vertical plate 8e3 extending in the front-rear direction on the lower surface of the upper horizontal wall 8e1. On the inner surface of the upper wall 8a, there are provided protrusions 8f with the front side inclined (three in this embodiment). A pair of ribs (positioning ribs) 8g are provided in front of the protrusion 8f.

  According to the trigger type liquid ejector 1 having the above-described configuration, the piston 33 is pushed rearward by the check of the operation lever 6 so that the content liquid in the cylinder 30k passes through the hole Hb and the hole Hh. It is press-fitted into the internal passage of the intake 31. Since the suction valve body 32d is reduced in diameter by the increase in the internal pressure of the content liquid, the content liquid passes through the gap formed between the suction valve body 32d and the intake 31, and passes through the notch K, the hole Ha, and the horizontal cylinder 30e. It passes through the internal passage and is ejected from the ejection port 51c through the through hole 50d.

  Next, the check of the operating lever 6 is stopped, and the operating lever 6 is returned to the original position by the biasing force of the spring member 7, whereby the piston 33 is also moved forward, and the inside of the cylinder 30k is made negative pressure. As a result, the discharge valve body 32c is separated from the discharge valve seat 31b, and the content liquid in the container C is introduced into the internal passage of the intake 31 through the pipe 4, and passes through the hole Hf and the hole Hc to enter the cylinder 30k. To be introduced. Until the piston 33 returns to the original position, the outside air introduction port Hd provided in the cylinder 30k is open, so that outside air is introduced from the outside air introduction port Hd into the container C through the hole He of the intake 31. Can be captured. For this reason, even if the content liquid in the container C decreases according to the ejection, the outside air is taken into the container C, so that the container C is not deformed by the negative pressure.

  Next, a method for attaching the shroud 8 will be described with reference to FIGS. 1 and 2. In FIG. 2, the piston 33, the operation lever 6 and the like are not shown for the sake of explanation. When the shroud 8 is attached to the body 30, the guide rib 8d of the shroud 8 is linked to the plate-like wall 30c1 of the body 30, the upper guide rib 8e is linked to the lower end 30i1 of the side wall 30i, and the lateral groove between the lateral ribs 30a2 The shroud 8 is slid and moved from the rear to the front of the body 30 so that the bottom wall 8c is inserted into 30a1. In the present embodiment, as shown in FIG. 3A, the R portion 30a3 is provided behind the lateral rib 30a2 serving as the inlet of the bottom wall 8c, so that the alignment when the bottom wall 8c enters the lateral groove 30a1 is performed. It becomes easy. Instead of the R portion 30a3, an inclined portion in which the width of the lateral groove 30a1 increases from the front to the rear may be provided. As the slide movement continues, the front end of the vertical plate 8e3 shown in FIG. 5B comes into contact with the stopper rib 30k1 shown in FIG. At this time, the two protrusions 8f provided on the shroud 8 enter two recesses 30p formed on the upper wall 30n of the body 30, and the other protrusion 8f engages with the rear end wall 30q of the body 30, The shroud 8 is held by the body 30 so as not to come off. Further, since the bottom wall 8c is restrained in the vertical direction by the lateral groove 30a1, even if the shroud 8 is pulled up with respect to the body 30, it does not easily come off. Further, in the present embodiment, as shown in FIG. 2, the pair of positioning ribs 8 g provided on the shroud 8 are provided at positions sandwiching the pair of upper walls 30 n provided on the body 30. Can be prevented from rotating around the connecting cylinder 30a.

  In addition, the internal structure of the trigger type liquid ejector according to the present invention is not limited to that of the present embodiment, and other structures that are normally used can be used.

  According to the present invention, it is not necessary to use a claw portion having high rigidity as in the conventional case, and the shroud is firmly held, so that the shroud is not easily detached from the main body portion. An ejector can be provided.

DESCRIPTION OF SYMBOLS 1 Trigger type liquid ejector 2 Mounting cap 2a Side wall 2b Screw part 2c Upper opening 2d Top wall 3 Main body part 4 Pipe 5 Nozzle 6 Operation lever 6a Front wall 6b Side wall 6c Pivot shaft 6d Relief hole 6e Convex part 7 Spring member 8 Shroud 8a Upper wall 8b Side wall 8c Bottom wall 8d Guide rib 8d1 Horizontal wall 8d2 Vertical wall 8e Upper guide rib 8e1 Upper horizontal wall 8e2 Upper vertical wall 8e3 Vertical plate 8f Projection 8g Rib (positioning rib)
30 Body 30a Connecting cylinder 30a1 Horizontal groove 30a2 Horizontal rib 30a3 R part 30b Flange 30c Top wall 30c1 Plate-like wall 30c2 Reinforcement rib 30d Vertical cylinder 30e Horizontal cylinder 30f Plate-like wall 30g Column part 30h Cylindrical part 30i Side wall 30i Cylinder part 30i 30k1 rib (stopper rib)
30m Division cylinder part 30n Upper wall 30p Recess 30q Rear end wall 31 Intake 31a Flange 31b Discharge valve seat 32 Valve body 32a Base part 32a1 Rib 32b Elastic part 32c Discharge valve body 32d Suction valve body 33 Piston 33a Sliding part 33b Sliding part 33b Engagement hole 50 Base 50a Vertical wall 50b Inner cylindrical wall 50c Outer cylindrical wall 50d Through hole 50e Outer wall 51 Nozzle cover 51a Connecting part 51b Hinge 51c Jet outlet 51d Collision wall C Containers Ha to Hh Hole K Notch P Packing

Claims (2)

A main body provided with a pump for sucking, pressurizing and pumping the content liquid in the container; an operation lever which is supported by the main body so as to be swingable and repeatedly drives the pump; and A trigger type liquid ejector comprising a nozzle provided forward and ejecting pressurized pressurized liquid toward the outside, and a shroud that covers the main body part leaving the operation lever and nozzle,
The main body includes a connecting cylinder that holds a mounting cap attached to the mouth of the container, and a horizontal cylinder that feeds the content liquid to the nozzle through an internal passage,
A lateral groove is provided on each of both sides of the connecting cylinder, and an upper wall extending toward the inner surface of the upper wall of the shroud is provided above the main body,
The shroud enters the lateral groove, guides the sliding movement of the shroud and constrains the shroud in the vertical direction, protrudes from the inner surface of the upper wall, enters a recess provided in the upper wall, and enters the shroud have a and retaining holding projections a,
The connecting cylinder includes a pair of horizontal ribs that protrude from the outer peripheral surface of the connecting cylinder and include the horizontal groove therebetween.
The transverse rib, the trigger type liquid sprayer to have the R portion or inclined portion to guide the entry of the said transverse groove of said bottom wall. 2. The trigger type liquid ejector according to claim 1, wherein a pair of the upper walls are provided across the axis of the horizontal cylinder, and a pair of positioning ribs sandwiching the pair of upper walls are provided on the inner surface of the upper wall.

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