JP2023006470A - trigger type liquid ejector - Google Patents

Abstract

To provide a trigger type liquid ejector which is small and excellent in space efficiency while maintaining operability.SOLUTION: A trigger type liquid ejector 1 of an embodiment according to the invention includes: an ejector body 10 having a pump part 24; a nozzle member 11 formed with an ejection hole 11d for ejecting liquid sent by the pump part 24 forward; a trigger part 12 which is disposed so as to be movable rearward in a state that the trigger part 12 is biased forward and drives the pump part 24; and a cover 14 having a cover body 51 for covering the ejector body 10 and a support part 52 connected to a rear end part of the cover body 51 through a hinge part 55. The support part 52 is configured to be rotatable between a protruding position, where the support part 52 extends rearward from the cover body 51, and a storage position, where a length protruding rearward from the cover body 51 is shorter than that in the protruding position, around the hinge part 55 relative to the cover body 51.SELECTED DRAWING: Figure 1

Description

The present invention relates to trigger-type liquid ejectors.

The trigger-type liquid ejector includes an ejector body having a pump portion, a nozzle member having an ejection hole for ejecting liquid, a trigger portion for operating the pump portion as it moves in the front-rear direction, and a state in which the ejection hole is exposed. and a cover that covers the ejector body (see, for example, Patent Document 1 below).

In this type of trigger-type liquid ejector, in order to perform the ejection operation, for example, with the index finger (or middle finger) hooked on the trigger, the portion of the ejector body located below the cover (for example, the mounting cap, etc.) is pulled. ). In this state, when the trigger portion is pulled backward, the pump portion operates as the trigger portion moves backward, and the liquid is ejected through the ejection hole. In particular, when the ejection operation is performed, the lower surface of the rear end of the cover (hereinafter referred to as the support portion) is supported by the back of the hand (the portion located between the thumb and the forefinger), so that the trigger-type liquid ejector, for example, can be It is thought that even if the contents are housed in the container body and the weight is large, it can be stably gripped.

Japanese Unexamined Patent Application Publication No. 2020-82042

In order to further improve the operability of the trigger-type liquid ejector, it is conceivable to secure the area of the support portion. However, if the area of the support portion is increased, the amount of rearward protrusion of the cover with respect to the ejector body increases, which may lead to an increase in the size of the trigger-type liquid ejector. As a result, there is a possibility that the space efficiency during the distribution stage (such as when displayed at a storefront) or when not in use will be reduced. In addition, an increase in the size of the cover may increase the amount of resin required for molding the cover.

The present invention provides a trigger type liquid ejector that is compact and excellent in space efficiency while maintaining operability.

In order to solve the above problems, the present invention employs the following aspects.
A trigger-type liquid ejector according to an aspect of the present invention includes an ejector body having a pump section for sending out a liquid contained in a container body, and a liquid ejector body attached to a front end portion of the ejector body and ejected by the pump section. a nozzle member formed with an ejection hole for ejecting forward, a trigger section disposed so as to be movable backward in a forward biased state to drive the pump section, and a cover body covering the ejector body; and a support portion connected to the rear end portion of the cover body via a hinge portion, the support portion extending rearward from the cover body at a first position and extending from the cover body. is configured to be rotatable about the hinge portion with respect to the cover main body between a second position in which the amount of rearward projection of the cover is smaller than that of the first position.

According to this aspect, during the ejection operation, by moving the support portion to the projecting position, the ejection operation can be performed while the trigger type liquid ejector is supported on the back of the hand via the support portion. . As a result, the trigger-type liquid ejector can be stably held, and operability can be improved.
On the other hand, by moving the support portion to the retracted position during distribution or when not in use, the amount of rearward protrusion of the cover relative to the ejector body can be suppressed. Therefore, it is possible to provide a trigger-type liquid ejector that is compact and excellent in space efficiency. Also, by miniaturizing the cover, the amount of resin required for molding the cover can be reduced, and cost reduction and the like can be achieved.

In the trigger-type liquid ejector of the aspect described above, the supporting portion includes a first engaging portion that restricts movement of the supporting portion to the second position by engaging with the cover main body at the first position. is preferably provided.
According to this aspect, when an unexpected load acts on the support, it is possible to prevent the support from unexpectedly moving from the retracted position to the projecting position. As a result, stable space efficiency can be exhibited during the distribution stage and when not in use.

In the trigger-type liquid ejector of the aspect described above, the cover body is configured such that the support portion can climb over as the support portion moves between the first position and the second position. It is preferable that a second engagement portion is provided that engages the support portion at the second position.
According to this aspect, it is possible to prevent the support portion from unexpectedly moving toward the second position due to a load or the like acting on the support portion via the back of the hand during the ejection operation. This enables stable ejection operation.

In the trigger-type liquid ejector of the aspect described above, it is preferable that the cover main body is provided with an accommodation portion that accommodates the support portion at the second position.
According to this aspect, it is possible to prevent the support portion from protruding rearward from the cover main body at the retracted position.

According to the aspect of the present invention, it is possible to provide a compact trigger-type liquid ejector that is excellent in space efficiency while maintaining operability.

FIG. 4 is a side view showing a part of the trigger-type liquid ejector (retracted position) according to the first embodiment in cross section. FIG. 2 is a side view partially showing a cross section of the trigger type liquid ejector (protruding position) according to the first embodiment. It is a perspective sectional view of a cover concerning a 1st embodiment. FIG. 4 is a partial cross-sectional view of the cover in the projecting position as seen from above; FIG. 8 is a side view showing a part of the trigger-type liquid ejector (retracted position) according to the second embodiment in cross section. FIG. 10 is a side view showing a part of the trigger-type liquid ejector (protruding position) according to the second embodiment in cross section.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In the embodiments and modifications described below, the same reference numerals may be assigned to corresponding configurations, and descriptions thereof may be omitted.

(First embodiment)
As shown in FIGS. 1 and 2, a trigger-type liquid ejector 1 of this embodiment is capable of ejecting liquid contained in a container body A. As shown in FIGS. The trigger-type liquid ejector 1 includes an ejector body 10, a nozzle member 11, a trigger section 12, and a cover . In addition, each component of the trigger type liquid ejector 1 is a molded product using a synthetic resin such as an olefin resin unless otherwise specified.

The ejector main body 10 includes a vertical supply cylinder portion 20 , a mounting cap 21 , an injection cylinder portion 22 , a relay member 23 , a pump portion 24 and an urging member 25 .

Hereinafter, the direction (axial direction) along the axis O1 of the vertical supply tube portion 20 is defined as the vertical direction, the bottom (not shown) side of the container body A is defined as the lower side, and the opposite side is defined as the upper side. A direction that intersects the axis O1 when viewed from above and below is defined as a radial direction. The direction in which the vertical supply tube portion 20 and the nozzle member 11 are aligned in the radial direction is defined as the front-rear direction. In the front-rear direction, the nozzle member 11 side with respect to the vertical supply tube portion 20 is the front side, and the opposite side is the rear side. Moreover, let the direction orthogonal to the front-back direction seen from an up-down direction among radial directions be a left-right direction.

Liquid sucked up from the container body A by the pump part 24 flows through the vertical supply tube part 20 . The vertical supply tube portion 20 is formed in a multi-stage tube shape in which the diameter of the vertical supply tube portion 20 decreases with increasing position. Specifically, the vertical supply tube portion 20 includes an upper small diameter portion 20a and a large diameter portion 20b that continues below the small diameter portion 20a. The large-diameter portion 20b is provided with a flange portion 20c projecting radially outward.

The mounting cap 21 is formed in a tubular shape extending in the vertical direction. The mounting cap 21 is detachably fastened to the mouth portion (not shown) of the container body A with the flange portion 20c sandwiched between it and the upper opening edge of the mouth portion (not shown). The method of fixing the mounting cap 21 and the opening may be a method other than screwing (for example, fitting).

The injection cylinder portion 22 allows the liquid in the vertical supply cylinder portion 20 to flow toward the nozzle member 11 . The injection cylinder portion 22 extends forward from the upper end portion of the vertical supply cylinder portion 20 . Liquid flow from the vertical supply cylinder part 20 to the injection cylinder part 22 is permitted between the vertical supply cylinder part 20 and the injection cylinder part 22, and liquid flow from the injection cylinder part 22 to the vertical supply cylinder part 20 is permitted. A valve body (not shown) is provided for regulating the

The relay member 23 connects between the ejection cylinder portion 22 and the nozzle member 11 . The relay member 23 is attached to the injection cylinder portion 22 from the front side of the injection cylinder portion 22 .

The pump part 24 stores and pumps the liquid in the container body A according to the movement of the trigger part 12 . The pump section 24 includes a cylinder 31 and a piston 32 .
The cylinder 31 is provided in front of the small diameter portion 20a of the vertical supply tube portion 20. As shown in FIG. The cylinder 31 is formed in the shape of a bottomed cylinder that protrudes on both sides in the left-right direction with respect to the vertical supply cylinder portion 20 (small diameter portion 20a) and opens forward.

The piston 32 is provided movably in the front-rear direction with respect to the cylinder 31 . The piston 32 slides on the inner peripheral surface of the cylinder 31 as it moves back and forth with respect to the cylinder 31 . The vertical supply tube portion 20 is provided with a valve body (not shown) that allows the liquid to flow from the container body A to the cylinder 31 and regulates the liquid flow from the cylinder 31 to the container body A. ing.

The trigger part 12 is provided in front of the pump part 24 so as to be movable back and forth. Specifically, the trigger portion 12 includes a trigger body 12a, a support piece 12b, and a spring receiving portion 12c.
The trigger body 12a extends in front of the pump portion 24 while being inclined forward as it goes downward from above. The trigger body 12a is a portion that is gripped when performing a jetting operation, and an index finger or the like is hooked from the front. A front end portion of a piston 32 is connected to a vertically intermediate portion of the trigger body 12a. That is, the piston 32 moves back and forth as the trigger body 12a moves back and forth.

A pair of left and right support pieces 12b are provided at the upper end of the trigger body 12a. The support pieces 12 b extend upward on both sides in the left-right direction with respect to the relay member 23 . An upper end portion of each support piece 12b is supported by a relay member 23 so as to be rotatable around an axis along the left-right direction. Therefore, the trigger part 12 is configured to be rotatable about the axis along the left-right direction with the upper end of each support piece 12b as a fulcrum.

A pair of spring receiving portions 12c are provided on both left and right sides of the trigger body 12a. The spring receiving portion 12c protrudes from the trigger body 12a to both sides in the left-right direction. Each spring receiving portion 12c is open upward and rearward.

The biasing member 25 biases the trigger portion 12 forward. The biasing member 25 is formed in a U shape in plan view. The biasing member 25 includes a connecting portion 25a and a pair of elastic portions 25b.

The connection portion 25a is attached to the upper end portion of the vertical supply cylinder portion 20 (the boundary portion with the injection cylinder portion 22).
The elastic portions 25b extend forward from both lateral end portions of the connection portion 25a (only one elastic portion 25b is shown in FIG. 1). That is, the connecting portion 25a integrally connects the rear ends of the elastic portions 25b. Each elastic portion 25b is arranged on both sides of the vertical supply tube portion 20 in the left-right direction. Each elastic portion 25b has an arcuate shape that protrudes upward in a side view. Each elastic portion 25 b passes above the cylinder 31 and extends from the upper end portion of the vertical supply tubular portion 20 to the front of the cylinder 31 .

A front end portion (lower end portion) of the elastic portion 25b is accommodated in the spring receiving portion 12c in front of the cylinder 31. As shown in FIG. The elastic portion 25b is connected to the inner surface of the spring receiving portion 12c within the spring receiving portion 12c. In the illustrated example, the elastic portion 25b is connected to the trigger portion 12 by coming into contact with the rear facing surface of the inner surface of the spring receiving portion 12c. The elastic portion 25b is configured to be elastically deformable (flexurally deformable) in a direction orthogonal to the extending direction. In the present embodiment, the elastic portion 25b is flexurally deformed with the rear end as a starting point, so that the front end is elastically displaced in the front-rear direction. Therefore, the elastic portion 25b is interposed between the upper end portion of the vertical supply tube portion 20 and the trigger portion 12, and biases the trigger portion 12 forward.

The nozzle member 11 is attached to the relay member 23 from the front. The nozzle member 11 is formed in a capped tubular shape that opens rearward. A top wall portion 11a of the nozzle member 11 is formed with a jet hole 11b penetrating the top wall portion 11a in the front-rear direction.

As shown in FIGS. 1 to 3, the cover 14 has a structure in which a cover body 51 and a support portion 52 are integrally formed.
With the nozzle member 11 exposed, the cover body 51 surrounds a portion of the ejector body 10 located above the mounting cap 21 from above, rear, and sides.

The cover main body 51 is formed in a box shape opening forward. The ejector body 10 is inserted from the front inside the cover body 51 with the nozzle member 11 facing forward. The ejector main body 10 is attached to the cover main body 51 within the cover main body 51 by, for example, locking with claws or the like.

The cover main body 51 includes a top wall portion 51a, a rear wall portion 51b, a side wall portion 51c, and a bottom wall portion 51d.
The ceiling wall portion 51a extends in the front-rear direction above the ejector main body 10 . The top wall portion 51a covers the ejector body 10 from above.

The rear wall portion 51b covers the ejector body 10 from behind. The rear wall portion 51b extends downward from the rear edge of the top wall portion 51a while being inclined rearward. A housing portion 51f is formed in the rear wall portion 51b so as to penetrate the rear wall portion 51b in the front-rear direction. The accommodation portion 51f extends vertically in the rear wall portion 51b. A lower opening edge of the housing portion 51f coincides with a lower edge of the rear wall portion 51b. The upper opening edge of the accommodation portion 51f is located above the middle portion in the vertical direction of the rear wall portion 51b.

The side wall portions 51c are arranged on both sides of the ejector body 10 in the left-right direction. The outer peripheral edge of each side wall portion 51c continues to the lateral edge of each of the ceiling wall portion 51a and the rear wall portion 51b.
As shown in FIGS. 3 and 4, the bottom wall portion 51d protrudes from the lower edges of the rear wall portion 51b and the side wall portion 51c toward the inside of the cover body 51 in a flange shape. The bottom wall portion 51d is formed in a U shape surrounding the upper end portion of the large-diameter portion 20b from the rear and sides in a plan view.

The support portion 52 is integrally connected via a hinge portion 55 to the lower opening edge of the accommodation portion 51f (the boundary portion between the rear wall portion 51b and the bottom wall portion 51d). The hinge portion 55 is formed integrally with the cover main body 51 and the support portion 52, is formed thinner than the cover main body 51 and the support portion 52, and is configured to be elastically deformable. Thus, the support portion 52 is configured to be rotatable around the axis along the left-right direction with the hinge portion 55 as a starting point. In this embodiment, the hinge portion 55 is formed over the entire area of the base edge of the support portion 52 except for both ends in the left-right direction. However, the hinge portion 55 may be intermittently provided in the left-right direction.

The support portion 52 is formed in a plate shape extending cantilevered from the cover main body 51 . In this embodiment, the support portion 52 is formed in a semi-oval shape with a rounded tip. However, the outer shape of the support portion 52 can be appropriately changed, such as a rectangular shape.

The support portion 52 is configured to be rotatable about the hinge portion 55 with respect to the cover main body 51 between a retracted position (see FIG. 1) and a projected position (see FIG. 2). The retracted position is a state in which the support portion 52 is housed in the housing portion 51f. Specifically, in the retracted position, the support portion 52 extends upward from the lower opening edge of the housing portion 51f while being inclined forward. The tip of the support portion 52 reaches the inside of the cover main body 51 through the accommodation portion 51f.

As shown in FIGS. 2 and 4, the protruding position is a state in which the support portion 52 protrudes rearward from the cover main body 51 along the bottom wall portion 51d. At the projecting position, the support portion 52 is arranged with the vertical direction as the thickness direction. In the following description, the surface of the support portion 52 that faces downward at the projecting position is defined as a first surface, and the surface that faces upward is defined as a second surface. In the illustrated example, when the support portion 52 is at the projecting position, the first surface is flush with the bottom surface of the bottom wall portion 51d, and the second surface is flush with the top surface of the bottom wall portion 51d. . In addition, in the present embodiment, the support portion 52 is arranged parallel to the front-rear direction at the projecting position, but the configuration is not limited to this. The support portion 52 may project rearwardly from the cover body 51 at the projecting position by a larger amount than at the retracted position. In this case, the support portion 52 may be arranged, for example, at an angle with respect to the front-rear direction at the projecting position.

As shown in FIGS. 1 and 3 , in the retracted position, the support portion 52 is restricted from moving to the projecting position by an engaging portion (first engaging portion) 61 provided on the cover body 51 . The engaging portion 61 protrudes inward in the left-right direction from a side edge (an edge facing inward in the left-right direction) of the accommodating portion 51f. The engaging portion 61 engages (contacts) with the tip portion of the support portion 52 from behind the support portion 52 when the support portion 52 is in the retracted position. The protrusion amount of the engaging portion 61 is set to a height that the support portion 52 can climb over when moving the support portion 52 to the protrusion position (at the time of rotating operation). At the retracted position, there is a gap S in the vertical direction between the upper opening edge of the housing portion 51f and the tip portion of the support portion 52 . The gap S functions as a space for inserting a finger when the support portion 52 is rotated.

As shown in FIGS. 2 to 4, ribs (second engagement portions) 62 are formed at the base edge of the support portion 52 on both sides in the left-right direction with respect to the hinge portion 55. . The rib 62 climbs over the bottom wall portion 51d in the vertical direction by rotating around the hinge portion 55 together with the support portion 52 as the support portion 52 moves between the projecting position and the retracted position. Specifically, the rib 62 protrudes upward from the second surface of the support portion 52 and extends in the front-rear direction when the support portion 52 is at the projecting position. A front end portion of the rib 62 protrudes forward from the base end edge of the support portion 52 . The rib 62 engages with the bottom wall portion 51d from above the bottom wall portion 51d when the support portion 52 is at the projecting position, thereby restricting the movement of the support portion 52 from the projecting position to the retracted position. As shown in FIGS. 1 and 3, the ribs 62 are engaged with the bottom wall portion 51d from behind the bottom wall portion 51d when the support portion 52 is in the retracted position, thereby providing support from the retracted position to the projecting position. It regulates the movement of the portion 52 .

As shown in FIG. 4, relief portions 65 are formed in portions located on both sides of the hinge portion 55 in the left-right direction at the rear edge of the bottom wall portion 51d. The relief portion 65 penetrates the bottom wall portion 51d in the vertical direction and opens on the rear edge of the bottom wall portion 51d. The relief portion 65 reduces the amount of overlap between the rib 62 and the bottom wall portion 51d, and is positioned on the locus of movement of the rib 62 when the support portion 52 rotates. Therefore, as the support portion 52 moves between the protruded position and the retracted position, the base end portion of the rib 62 passes inside the escape portion 65 and the tip portion of the rib 62 passes over the rear edge of the escape portion 65 . , climb over the bottom wall portion 51d in the vertical direction.

Next, the case of using the trigger type liquid ejector 1 configured as described above will be described. In the following description, it is assumed that the state where the support portion 52 is in the retracted position is the initial state, and each portion of the trigger type liquid ejector 1 is filled with the liquid.

As shown in FIGS. 1 to 3, when using the trigger type liquid ejector 1, first, the support portion 52 is moved from the retracted position to the projected position. Specifically, a finger is inserted into the gap S, and the finger is hooked on the second surface of the support portion 52 . In this state, when the support portion 52 is pulled backward, the support portion 52 rotates backward with the hinge portion 55 as a starting point. Specifically, after the support portion 52 rides over the engaging portion 61 rearward, the support portion 52 falls further rearward. After that, the rib 62 climbs over the bottom wall portion 51 d while passing through the escape portion 65 . As a result, the rib 62 is engaged with the bottom wall portion 51d from above, and the support portion 52 is at the projecting position.

As shown in FIG. 2 , the support portion 52 protrudes rearward with respect to the cover main body 51 by shifting the support portion 52 to the projecting position. As a result, the first surface of the support portion 52 is arranged at the rear of the mounting cap 21 so as to face downward.

In order to eject the liquid, the trigger portion 12 is hooked with the index finger or the like, and the hand is put around the mounting cap 21 . In this state, the portion of the back of the hand located between the thumb and index finger approaches or contacts the first surface of the support portion 52 from below. When the trigger portion 12 is pulled rearward, the trigger portion 12 rotates about the supporting piece 12b, thereby moving the trigger portion 12 rearward. Then, the elastic portion 25b is pushed rearward through the spring receiving portion 12c, so that the elastic portion 25b is flexurally deformed. As a result, the elastic portion 25b is elastically displaced rearward as the trigger portion 12 moves rearward. As a result, an urging force is applied to the trigger portion 12 toward the front.

When the trigger portion 12 moves rearward, the piston 32 moves rearward with respect to the cylinder 31 . Then, the inside of the cylinder 31 is pressurized, so that the liquid inside the cylinder 31 is supplied into the vertical supply tubular portion 20 (the small diameter portion 20a). The liquid supplied into the vertical supply cylinder portion 20 reaches the relay member 23 through the injection cylinder portion 22 . After reaching the relay member 23, the liquid flows into the nozzle member 11 and is then ejected through the ejection holes 11d.

When the pulling operation of the trigger portion 12 is released, the trigger portion 12 moves forward due to the restoring force of the elastic portion 25b. Along with this, the piston 32 is restored forward relative to the cylinder 31 . As a result, the pressure inside the piston 32 is reduced. As a result, the liquid in the container body A is sucked up into the vertical supply tubular portion 20 . The liquid sucked into the vertical supply tube portion 20 is introduced into the cylinder 31 to prepare for the next ejection operation.

As shown in FIGS. 1 and 2, to return the support 52 to the retracted position after the ejection operation is completed, the support 52 is pushed upward. Then, the support portion 52 rotates upward with the hinge portion 55 as a starting point. While the support portion 52 rotates toward the retracted position, the rib 62 passes through the relief portion 65 and climbs over the bottom wall portion 51d downward. After that, by further pushing the support portion 52 toward the retracted position, the support portion 52 climbs over the engaging portion 61 forward. As a result, the support portion 52 is accommodated in the accommodation portion 51f in a state of being engaged with the engaging portion 61 . As a result, the support portion 52 moves from the projecting position to the retracted position. By moving the support portion 52 to the retracted position, the rearward protrusion amount of the cover 14 from the mounting cap 21 is reduced.

As described above, in the present embodiment, the support portion 52 is configured to rotate between the protruded position extending rearward from the cover body 51 and the retracted position located forward of the protruded position.
According to this configuration, by moving the support portion 52 to the projecting position during the ejection operation, the trigger type liquid ejector 1 is supported on the back of the hand via the support portion 52, and the ejection operation is performed. be able to. As a result, the trigger-type liquid ejector 1 can be stably held, and operability can be improved.
On the other hand, by moving the support portion 52 to the retracted position during distribution or when not in use, the rearward protrusion amount of the cover 14 with respect to the ejector main body 10 can be suppressed. Therefore, it is possible to provide the trigger type liquid ejector 1 which is compact and excellent in space efficiency. Further, by reducing the size of the cover 13, the amount of resin required for molding the cover 13 can be reduced, and cost reduction and the like can be achieved.

In this embodiment, the cover main body 51 is provided with an engaging portion 61 that engages with the support portion 52 at the retracted position to restrict the movement of the support portion 52 from the retracted position to the projecting position. .
According to this configuration, when an unexpected load acts on the support portion 52, it is possible to prevent the support portion 52 from suddenly moving from the retracted position to the projecting position. As a result, stable space efficiency can be exhibited during the distribution stage and when not in use.

In this embodiment, the cover main body 51 is configured so that the support portion 52 can climb over it, and is provided with ribs 62 that engage with the support portion 52 in the retracted position.
According to this configuration, it is possible to prevent the support portion 52 from unexpectedly moving toward the retracted position due to a load or the like acting on the support portion 52 via the back of the hand during the ejection operation. This enables stable ejection operation.

In this embodiment, the cover main body 51 is formed with a housing portion 51f for housing the support portion 52 in the retracted position.
According to this configuration, it is possible to prevent the support portion 52 from projecting rearward from the cover main body 51 at the retracted position.

(Second embodiment)
In the trigger-type liquid ejector 1 shown in FIGS. 5 and 6, the support portion 52 includes a base portion 100 and an extension portion 101. As shown in FIG.
At the retracted position shown in FIG. 5, the base portion 100 is shaped like a plate extending in the left-right direction. A front edge of the base portion 100 is rotatably connected to the bottom wall portion 51 d via a hinge portion 55 . At least both lateral edges of the base portion 100 protrude outward in the lateral direction with respect to the mounting cap 21 .
The extension portion 101 extends cantilevered from the base portion 100 . The cross-sectional shape of the extension part 101 is formed in an arc shape. Note that the cross-sectional shape of the extension portion 101 may be linear.

The support portion 52 is configured to be rotatable between a retracted position and a projected position via a hinge portion 55 . Specifically, when the support portion 52 is in the retracted position shown in FIG. 5, the base portion 100 is arranged behind the bottom wall portion 51d and on the same plane as the bottom wall portion 51d. The extending portion 101 extends downward from the base portion 100 . At the retracted position, the extension part 101 is arranged along the outer peripheral surface of the mounting cap 21 .
When the support portion 52 is at the projecting position shown in FIG. 6, the base portion 100 is housed in the housing portion 105 formed in the rear wall portion 51b. The accommodation portion 105 is formed such that the lower end portion of the rear wall portion 51b penetrates in the front-rear direction. At the projecting position, the extending portion 101 extends rearward from the rear wall portion 51b.

The base portion 100 is formed with an engaging portion 111 that engages with the upper opening edge of the accommodating portion 105 when it is in the projecting position. The engaging portion 111 protrudes forward from the base portion 100 . The engaging portion 111 is configured to be able to climb over the upper end opening edge of the housing portion 105 as the support portion 52 moves between the retracted position and the projecting position.

In the trigger-type liquid ejector 1 of the present embodiment, in order to shift the support portion 52 from the retracted position to the projecting position, the tip portion (lower end portion) of the support portion 52 is hooked with a finger or the like and the support portion 52 is pushed up. Then, the support portion 52 rotates around the hinge portion 55, thereby moving the support portion 52 upward. The base portion 100 is accommodated in the accommodation portion 105 by the engaging portion 111 getting over the upper end opening edge of the accommodation portion 105 . As a result, the support portion 52 moves to the projecting position.

Also in the present embodiment, when performing a jetting operation, a hand is put around the mounting cap 21 while the index finger or the like is hooked on the trigger portion 12 . At this time, the support portion 52 is supported by a portion of the back of the hand located between the thumb and the index finger, so that a stable ejection operation can be performed. In order to return the support portion 52 to the retracted position after the ejection operation is completed, the support portion 52 is pushed downward. As a result, the support portion 52 rotates around the hinge portion 55 so that the engaging portion 111 climbs over the upper opening edge of the housing portion 105 . As a result, the support portion 52 moves to the retracted position.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other changes in configuration are possible without departing from the scope of the present invention. The present invention is not limited by the foregoing description, but only by the appended claims.
Although the configuration in which the trigger portion 12 is rotatable has been described in the above-described embodiment, the configuration is not limited to this configuration. The trigger part 12 may be configured to be slidable as long as it is configured to be movable in the front-rear direction.
In the above-described embodiment, the configuration in which the support portion 52 is rotatable around the axis along the left-right direction has been described, but the configuration is not limited to this. The support portion 52 may be configured to be rotatable about an axis along the vertical direction or the front-rear direction as long as the amount of rearward protrusion from the cover body 51 changes between the retracted position and the protruding position. .
In the embodiment described above, the configuration in which the support portion 52 is provided with the first engaging portion and the cover main body 51 is provided with the second engaging portion has been described, but the present invention is not limited to this configuration. The support portion may be provided with the second engaging portion, and the cover main body 51 may be provided with the first engaging portion.

Although the configuration in which the first surface of the support portion 52 is formed as a flat surface has been described in the above-described embodiment, the configuration is not limited to this configuration. The first surface of the support portion 52 may be formed into a curved surface or the like.
Although the configuration in which the cover main body 51 and the support portion 52 are integrally formed via the hinge portion 55 has been described in the above-described embodiment, the configuration is not limited to this. The cover main body 51 and the support portion 52 may be connected via a separate hinge portion 55.
In the embodiment described above, the configuration in which the support portion 52 is connected to the lower edge of the rear wall portion 51b has been described, but the configuration is not limited to this. The support portion 52 may be connected to the rear end portion of the cover body 51 (for example, the portion located rearward of the axis O1).

In addition, it is possible to appropriately replace the components in the above-described embodiment with well-known components without departing from the gist of the present invention, and the above-described modifications may be combined as appropriate.

1: Trigger type liquid ejector 10: ejector body 11: nozzle member 11d: ejection hole 12: trigger part 14: cover 24: pump part 51: cover body 51f: housing part 52: support part 55: hinge part 61: engagement Joining portion (second engaging portion)
62: Rib (first engaging portion)
90: Rib (first engagement portion)
A: Container body

Claims (4)

an ejector body having a pump portion for pumping out the liquid contained in the container body;
a nozzle member attached to a front end portion of the ejector main body and having an ejection hole formed therein for ejecting the liquid delivered by the pump portion forward;
a trigger unit disposed so as to be movable rearward in a forward biased state for driving the pump unit;
a cover body covering the ejector body; and a cover having a support connected to the rear end of the cover body via a hinge,
The support portion is positioned between a first position extending rearward from the cover main body and a second position where the amount of rearward projection from the cover main body is smaller than that of the first position, with respect to the cover main body. A trigger-type liquid ejector configured to be rotatable around the hinge portion. 2. The support part according to claim 1, wherein the support part is provided with a first engagement part that restricts movement of the support part to the second position by engaging with the cover body at the first position. Trigger-type liquid ejector. The cover body is configured such that the support portion can climb over the cover body as the support portion moves between the first position and the second position, and engages with the support portion at the second position. 3. The trigger type liquid ejector according to claim 1 or 2, wherein a second engaging portion is provided. 4. The trigger-type liquid ejector according to any one of claims 1 to 3, wherein the cover main body is provided with an accommodation portion that accommodates the support portion at the second position.

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