JP7152348B2 - Trigger type ejection device - Google Patents

Description

The present invention relates to a trigger-type ejection device.

As this type of trigger-type ejection device, a cylinder tube facing the same direction is arranged below the injection tube having a nozzle at the tip, and the front part of the piston fitted in this cylinder tube is used as the injection nozzle. There is known one consisting of an ejector linked to a trigger hanging from the front of the cylinder and a stopper attached to the piston (Patent Document 1).
The stopper has a structure in which a knob portion is vertically provided from a C-shaped mounting portion having an upper insertion opening on the upper side.

JP 2015-85289

In Patent Document 1, for example, there is a possibility that the stopper will rotate around the piston due to vibration during transportation or due to contact of the knob with another object. The rotation of the stopper may cause the stopper to fall off from the piston, or the deformation of the parts may cause a loss of function.

SUMMARY OF THE INVENTION A first object of the present invention is to provide a trigger-type ejection device capable of restricting the rotation of a stopper attached to a piston.
A second object of the present invention is to provide a convenient trigger ejection device.

First, the basic configuration of the present invention will be described. The basic configuration has an ejector body 6 incorporating a pump mechanism P for sucking, pressurizing, and pumping the liquid in the container. an ejector 2 that holds a trigger 22 that reciprocates in the longitudinal direction within a cylinder tube 16 and that is provided with biasing means 28 that biases the piston 20 forward;
A knob portion 54 is provided vertically from a mounting portion 41 including a pair of clamping pieces 48 for clamping the front portion of the piston 20 from the lateral direction. and a stopper 40 that restricts the retraction of the trigger 22 by interposing it in a detachable manner,
An upper insertion opening A1 for inserting the piston 20 is formed between the upper ends of the pair of clamping pieces 48.
The stopper 40 is configured by the engagement protrusion S formed at a suitable position of the stopper 40 and the engagement receiving surface R formed on the ejector 2 and capable of abutting the engagement protrusion S. A detent means T for restricting rotation around the piston 20 is formed.

In the basic structure of the present invention described above, as shown in FIG. 1, a stopper 40 is interposed between the cylinder cylinder 16 of the ejector 2 and the trigger 22, and attached to the front portion of the piston 20. It is proposed to provide anti-rotation means T for restricting the rotation of the piston 20 around the piston. This anti-rotation means is formed by an engaging protrusion S formed at an appropriate position on the stopper 40 and an engaging receiving surface R formed on the ejector 2 and capable of contacting the engaging protrusion S. formed.
According to this configuration, for example, if another object collides with the knob 54 of the stopper 40, the stopper 40 rotates around the piston 20 and falls off, or the stopper is deformed, resulting in a loss of performance. It is possible to prevent disadvantages such as

The first means has the above-described basic configuration, and the left and right side surfaces of a slit 18 drilled in the front-rear direction in the lower surface of the front end side of the cylinder tube 16 are used as a pair of engagement receiving surfaces R,
As the engaging projection S, an engaging plate portion 56 extending rearward from the knob portion 54 was fitted into the slit 18 .

In this means, one preferred mode of the engagement receiving surface R and the engagement protrusion S is shown.
That is, the left and right side surfaces of a slit 18 formed in the lower surface of the cylinder tube 16 on the front end side serve as a pair of engagement receiving surfaces R. As shown in FIG.
As the engaging projection S, as shown in FIG. 1, an engaging plate portion 56 extending rearward from the knob portion 54 is attached to the front end side of the cylinder tube 16 as shown in FIG. 3(B). It is configured to fit into a slit 18 drilled in the front-rear direction on the bottom surface.
According to this configuration, by fitting the engaging plate portion 56 into the slit 18, it is possible to reliably prevent rotation of the stopper.

The second means has the basic configuration described above, and the urging means 28 is formed by a pair of left and right springs 28 installed between the ejector body 6 and the trigger 22,
The lower ends of the pair of springs 28 protrude rearward from the trigger 22, and the inner surfaces of the rear ends of the springs 28 serve as a pair of engagement receiving surfaces R,
As the engaging protrusions S, a pair of left and right contact ribs 50 formed on the lateral outer surfaces of the pair of clamping pieces 48 are brought into contact with the engagement receiving surfaces R. As shown in FIG.

In this means, another preferable aspect of the engagement receiving surface R and the engagement protrusion S is shown.
That is, as shown in FIG. 4A, the rear ends of a pair of springs 28, which are biasing means, project rearward from the trigger 22, and the inner surfaces of the rear ends of these springs 28 are engaged with a pair of engagement members. A receiving surface R is used.
Further, as shown in FIG. 5, at least a pair of left and right contact ribs 50 are formed on the lateral outer surfaces of the pair of clamping pieces 48 as the engaging projections S. As shown in FIG.
These contact ribs 50 are brought into contact with the engagement receiving surface R. As shown in FIG.
This configuration is advantageous in that it is not necessary to newly provide a receiving member for the engaging projection, and it is not necessary to greatly change the structure of the existing ejector.

The third means has the above-described basic configuration, and the ejector 2 includes a cover 32 having a pair of left and right side walls 32b vertically extending from a top wall 32a covering the upper surface of the injection cylinder 12,
The inner surfaces of the pair of side walls 32b are formed into a pair of left and right engagement receiving surfaces R,
As the engaging protrusions S, a pair of left and right plate-like flanges 52 protruding laterally outward from the mounting portion 41 are brought into contact with the engaging receiving surfaces R. As shown in FIG.

In this means, as shown in FIG. 7(B), a pair of left and right plate-like flanges 52 project outward from the mounting portion 41 as the engaging protrusions S, and these plate-like flanges 52 As shown in 7(A), the inner surfaces of both side walls 32b of the cover 32 are formed as a pair of left and right engagement receiving surfaces R. As shown in FIG.
With this configuration, the structure of the existing cover 32 can be utilized as a receiving member for preventing rotation of the stopper 40 .

According to the basic structure of the present invention, a stopper 40 is interposed between the cylinder cylinder 16 of the ejector 2 and the trigger 22 and attached to the front portion of the piston 20, and the stopper 40 is formed at an appropriate position. Rotation of the stopper 40 around the piston 20 is restricted by the mating projection S and the engagement receiving surface R formed on the ejector 2 and capable of contacting the engagement projection S. Since the anti-rotation means T is formed, it is possible to prevent the stopper 40 from rotating around the piston 20 and falling off.
According to the invention according to the first means, the left and right side surfaces of the slit 18 formed in the lower surface of the front end side of the cylinder tube 16 are used as a pair of engagement receiving surfaces R, and the engagement protrusion S is used as the knob portion 54. Since the engaging plate portion 56 is extended rearward from the outer surface, the rotation of the stopper can be reliably prevented.
According to the invention according to the second means, the rear ends of the pair of springs 28, which are biasing means, project rearward from the trigger 22, and the inner surfaces of the rear ends of these springs 28 are engaged with the pair of engaging means. Since the receiving surface R is used, there is no need to newly provide a receiving member for the engaging projection, and there is no need to greatly change the structure of the existing ejector, which is advantageous.
According to the invention according to the third means, since the inner surfaces of both side walls 32b of the cover 32 are formed into a pair of left and right engagement receiving surfaces R, the structure of the existing cover 32 is utilized as a receiving member for preventing rotation of the stopper 40. can do.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which looked at the trigger type ejection device of 1st Embodiment of this invention from the side. It is a figure which shows the structure of the stopper of the trigger type ejection device of FIG. 1, the same figure (A) is a front view of a stopper, and the same figure (B) is sectional drawing seen from the side of a stopper. FIG. 2 is a diagram showing the configuration of a cylinder of the trigger-type ejection device of FIG. FIG. 4D is a top view of the cylinder. FIG. 10 is a diagram showing the configuration of a trigger-type ejection device according to a second embodiment of the present invention, and FIG. is a front view of the stopper of the trigger type ejection device. FIG. 5 is an enlarged view of a main portion of the stopper of FIG. 4(B); BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the trigger type ejection device of the reference example of this invention, (A) is a side view of the principal part (part except a cover) of a trigger type ejection device, and (B) is a trigger Fig. 10 is a front view of the stopper of the jetting device; It is a diagram showing the configuration of a trigger type ejection device of a third embodiment of the present invention, FIG. 1A is a cross-sectional view of the trigger type ejection device as seen from the side, Fig. 3 is a front view of the stopper of the device;

1 to 3 show a trigger ejection device according to a first embodiment of the invention. This trigger type ejection device is composed of an ejector 2 and a stopper 40 . Each of these members can be made of, for example, a synthetic resin material or a metal.

The ejector 2 comprises a mounting cylinder 4, an ejector body 6, a nozzle 14, a piston 20, a trigger 22, a spring 28, and a cover 32, as shown in FIG.
The mounting tube 4 is a member for mounting on the outer surface of the mouth/neck portion 102 of the container body 100 .
The ejector main body 6 has an erecting cylinder 8 erected from the mounting cylinder 4. The injection cylinder 12 is forwardly moved from the upper side of the erecting cylinder, and the front opening cylinder cylinder 16 is forward from the lower side of the erecting cylinder 8. It is protruding. The cylinder tube 16 and the standing tube 8 communicate with each other through a communication hole b, and the inside of the standing tube 8 communicates with a first check valve V1 located below the communication hole b. A second check valve V2 located above the hole b is provided. A suction pipe 10 is suspended from the standing tube 8 .
In this specification, the left side of the drawing is referred to as "front", the right side as "rear", and the direction perpendicular to the plane of the drawing as "left and right".
The illustrated upright cylinder 8 is formed by an inner cylinder 8a and an outer cylinder 8b, and a cylinder holding cylinder 13 integrally projects forward from the outer cylinder 8b. The cylinder tube 16 is fitted inside the cylinder holding tube 13 . However, these structures can be changed as appropriate. A pump mechanism P is formed by the cylinder tube 16 and a piston 20 which will be described later.
As shown in FIG. 3C, the illustrated cylinder cylinder 16 has a main cylinder portion 16a with an open front surface, and a boss cylinder 16d projects forward from the center of the bottom wall that closes the rear surface of the main cylinder portion 16a. ing.
Further, as shown in FIG. 3A, folding pieces 16b and 16c that fold outward from the cylinder holding tube 13 are projected rearward from the lower end and the upper end of the front surface of the main tube portion 16a, respectively.
As shown in FIG. 3(D), the upper folded piece 16c is formed with a cut 19 extending from its lower end to near its front end.
As shown in FIG. 3B, the lower folded piece 16b is provided with a slit 18 extending from the front end to the rear end. This slit will be described later.
The nozzle 14 is fitted to the front end of the injection cylinder 12 .
The piston 20 is fitted in the cylinder tube 16 so as to be able to advance and retreat in the front-rear direction. A recess 21 is formed in the front portion of the piston 20 .
The trigger 22 hangs down from the front portion of the injection cylinder 12 so as to be swingable in the front-rear direction around a pivot axis O indicated by a dotted line in FIG. The illustrated trigger 22 is slanted forward and downward.
A front portion of the piston 20 is linked to an intermediate portion of the trigger 22 in the vertical direction.
In the illustrated example, the trigger 22 has a pair of left and right side plates 22b that protrude rearward from the entire left and right ends of a vertically long front plate 22a.
A penetrating tube 23 is provided through a portion (widthwise intermediate portion) of the front plate 22a. The front portion of the piston 20 is inserted into the rear portion of the penetrating tube 23 , and the connecting pin 24 attached to the inner surface of the penetrating tube 23 is inserted into the recess 21 .
Further, an auxiliary wall 25 parallel to the lower portion of the cylinder wall of the through cylinder 23 is attached to the inner surface of the pair of side plates 22b.
The outer surfaces of the pair of side plates 22b are formed with pockets 26 having upper end openings into which hooking pieces 30, which will be described later, are inserted.
The spring 28 functions as a biasing means that biases the piston 20 forward, and is installed between the injection cylinder 12 and the trigger 22 .
The illustrated spring 28 has an arc-shaped oval spring body 29 whose upper end is connected to the side surface of the injection cylinder 12, and a hooking piece 30 projecting downward from the lower end of this body. The latching piece 30 is inserted into the pocket 26 and connected by a conventionally known method. In order to explain this configuration, FIG. 4A of the second embodiment, which will be described later, is used.
The cover 32 has a pair of left and right side walls 32b hanging down from both left and right ends of a top wall 32a that is elongated in the front-rear direction.
The hanging length of the side wall 32b is shortened toward the front side as indicated by the dotted line in FIG . Therefore, when fitting the later-described engaging plate portion 56 into the slit 18 of the folded piece 16b, the fitting operation can be performed while visually checking the slit 18, resulting in good operability.
According to the above configuration, when the trigger 22 is pulled rearward from the state of FIG. The liquid in the cylinder 16 passes through the second check valve V2 and the injection cylinder 12 and is ejected from the nozzle.
When the trigger 22 is released, the piston 20 moves forward due to the restoring force of the spring 28, and the inside of the cylinder tube 16 becomes negative pressure, thereby closing the second check valve V2 and closing the first check valve. V1 is opened, and the liquid in the container body 100 is sucked up into the cylinder tube 16. As shown in FIG.

The stopper 40 is formed with a mounting portion 41 and a knob portion 54 . The stopper 40 in the illustrated example is formed as an integrally molded product, but this structure can be changed as appropriate.

The mounting portion 41 is a portion to be mounted on the ejector 2, and as shown in FIG. 2A, a pair of left and right clamping pieces 48 protrude upward from a base portion 42 when viewed from the front. . These clamping pieces are formed to be flexibly deformable.
The base portion 42 in the illustrated example is formed by erecting a connecting piece 44 from an intermediate portion in the width direction of the substrate portion 43 . The pair of clamping pieces 48 protrude from the upper ends of the connecting pieces 44 .
The base plate portion 43 serves as a support bar interposed between the cylinder tube 16 and the trigger 22 .
In the illustrated example, as shown in FIG. 1, with the piston 20 held between the pair of holding pieces 48, the front end of the substrate portion 43 hits the rear end of the auxiliary wall 25 of the trigger 22, Also, the rear end of the base plate portion 43 is designed to abut against the front end of the cylinder tube 16 .
The substrate portion 43 in the illustrated example is formed in a substantially horizontal plate shape as a whole. As shown in FIG. 2A, the upper and lower surfaces of these horizontal plates are formed in an arcuate shape when viewed from the front, but the shape can be changed as appropriate.
Between the front surface of the substrate portion 43 and the front surface of the connecting piece 44, as shown in FIG. 2B, an upper stepped portion D1 is formed facing upward. The front surface of the substrate portion 43 projects forward at its lower end through a lower stepped portion D2 facing upward. As shown in FIG. 1, the rear end of the auxiliary wall 25 is hooked on the lower stepped portion D2, and the rear edge of the side plate 22b of the trigger 22 is also hooked on the upper stepped portion D1. is formed in However, this structure can be changed as appropriate.
In this embodiment, the pair of clamping pieces 48 are formed in a split ring shape (or C shape) by cutting the upper side of a ring (annulus).
An upper insertion opening A1 is formed at the cut portion. Further, the pair of clamping pieces 48 has expanded end portions 48a that expand upward and outward from the cut portion. This configuration makes it easy to push the piston 20 between the pair of clamping pieces 48 .
It is desirable that the inner surface contour of the pair of clamping pieces 48 is formed so as to fit the outer peripheral surface of the upper portion of the piston 20 corresponding to the cross-sectional shape (circular in the illustrated example) of the upper portion of the piston 20. With such a configuration, the clamping piece can be prevented from falling off from the piston 20 . In addition, since the pair of clamping pieces 48 are not attached to the piston 20 in a vertically displaced manner, it is easy to align the engagement projection S and the engagement receiving surface R, which will be described later.
In the illustrated example, the pair of clamping pieces 48 are formed in a split cylinder shape with an open upper end, and a pair of left and right vertical abutment plates 49 protrude outward in the left-right direction from their rear ends. These contact plate portions 49 are in contact with the front end surface of the cylinder tube 16 .
Further, as shown in FIG. 2B, the front surface of the mounting portion 41 is formed as an upper inclined surface i1 that inclines upward and backward from the lower side as a whole. By doing so, as shown in FIG. 1, it is avoided that the clamping piece 48 collides with the trigger 22 inclined forward and downward and becomes an obstacle.
On the other hand, the rear surface of the mounting portion 41 is formed on the vertical plane j as shown in the figure.

The knob portion 54 is formed in a vertical flat plate shape in the illustrated example. As shown in FIG. 2(A), the lower end of the grip portion 54 is formed into a widened portion 55 for hooking a finger.
The front surface of the knob portion 54 is formed into a lower inclined surface i2 inclined downward and rearward from the upper side.
In this embodiment, as shown in FIG. 2(B), an engagement plate portion 56 is formed by extending the knob portion 54 rearward and forming the extended portion.
The upper surface of the engaging plate portion 56 is formed on the horizontal plane h and is provided at substantially the same height as the lower surface of the substrate portion 43 . The engaging plate portion 56 is provided so that the horizontal surface h is at a height along the lower surface of the cylinder holding cylinder 13 when the pair of clamping pieces 48 are fitted to the piston 20 . The thickness of the engaging plate portion 56 is substantially the same as the width of the slit 18 formed in the folded piece 16b on the lower side of the cylinder tube 16. As shown in FIG.
With such a configuration, in this embodiment, the engaging plate portion 56 is used as the engaging projection S of the detent means T of the stopper 40, and the inner surface of the slit 18 is used as the detent member. It is the engagement receiving surface R of the means T. Further, the opening of the lower surface of the slit 18 is used as a lower insertion opening A2 which is a gap for inserting the engaging element.
The role of the anti-rotation means T is that the engagement plate portion 56 is fitted into the slit 18 with the pair of clamping pieces 48 attached to the front portion of the piston 20 to prevent the piston 20 from rotating. It is to restrict the rotation of the surrounding stopper 40 .
Here, the term "fitting" means "fitting" in which the slit 18 is fitted without a gap, as in the illustrated example, and "fitting" in which there is some play (gap). shall include “free fit”. However, the play should be such that the stopper does not come off from the piston.

1, the engagement plate portion 56 of the stopper 40 is fitted between the pair of engagement receiving surfaces R, which are the inner side surfaces of the slit 18 of the cylinder cylinder 16. , the rotation of the stopper 40 around the piston 20 can be effectively prevented.
When the stopper 40 is assembled to the ejector 2, the piston 20 is placed between the upper ends of the pair of clamping pieces 48 of the stopper 40, and the stopper 40 is pushed in as it is. Since the R and the engaging projection S can be brought into the engaged state, it is convenient to use.
In addition, since the engagement receiving surface R is formed using the structure of the existing trigger-type ejection device, a separate member for providing the engagement receiving surface R is not required, so the number of parts can be increased. economical.

Trigger-type ejection devices according to other embodiments and reference examples of the present invention will be described below. In these descriptions, descriptions of the same configurations as those of the first embodiment are omitted.

FIG. 4 shows a trigger ejection device according to a second embodiment of the invention.
In this embodiment, instead of the engagement projections S and the engagement receiving surfaces R of the first embodiment, engagement projections S are provided on the side surfaces of the pair of left and right clamping pieces 48, and on the inner surfaces of the pair of left and right springs 28. An engagement receiving surface R is formed respectively.
Specifically, as the engaging protrusions S, as shown in FIG. 4B, contact ribs 50 are provided on the outer surfaces of the pair of clamping pieces 48 so as to protrude outward.
In the illustrated example, as shown in FIG. 4(A), a pair of upper and lower contact ribs 50 are formed elongated in the front-rear direction on the left and right side outer surfaces of each clamping piece 48 . However, these structures can be changed as appropriate.
The contact rib 50 of this embodiment prevents the rotation of the stopper 40 around the piston 20 by contacting the engagement receiving surface R. As shown in FIG.
Here, the term "abutted" includes, as shown in the figure, a state in which the contact receiving surface is pressed against the engagement receiving surface in the initial state shown in FIG. 4(A), and a slight play in the initial state. and a mode in which it is close to the engagement receiving surface. However, in the latter case, when the stopper 40 is to be rotated with respect to the piston 20, the engaging protrusion collides with the engagement receiving surface, and the stopper cannot be rotated.
In the preferred illustrated example, as shown in FIG. 5, each contact rib 50 is provided with a wide flat contact surface 50a at the tip in the projecting direction in order to increase the pressure contact area with the engagement receiving surface R. It is formed in a pedestal having a Further, in the illustrated example, the contact surfaces 50a of the two contact ribs 50 are formed so as to be flush with each other along an imaginary vertical line L. As shown in FIG. As a result, the resistance against rotation of the stopper 40 is further increased.
The pair of left and right springs 28 has the rear end portion of the deformed oval spring body 29 protruding rearward from the rear edge of the trigger 22 . The inner surfaces of these rear end portions are used as the pair of left and right engagement receiving surfaces R. As shown in FIG. The distance between these engagement receiving surfaces R is approximately the same as the distance between the contact surfaces 50a of the pair of left and right clamping pieces 48. As shown in FIG.
These engagement receiving surfaces R abut against the abutment ribs 50 as shown by imaginary lines in FIG. Designed to be placed in position. Therefore, the pressure contact between the contact rib 50 and the engagement receiving surface R can reliably prevent rotation of the stopper 40 .
By fitting the piston 20 between the pair of clamping pieces 48, the contact rib 50 comes into contact with the engagement receiving surface R, and no special positioning work is required. Easy to use.
In addition, according to the above configuration, the engagement receiving surface R of the anti-rotation means T can be formed without greatly changing the configuration of the ready-made ejector 2, and the part having the engagement receiving surface R is newly provided. is economical because it does not require
In this embodiment, a pair of upper and lower horizontal ribs 51a and 51b are formed on the side outer surface of the clamping piece 48 so as to be positioned above and below the two contact ribs 50. As shown in FIG.

FIG. 6 shows a trigger-type ejection device according to a reference example of the present invention.
In this reference example , instead of the engaging protrusion S and the engaging receiving surface R of the first embodiment, the engaging protrusion S is provided on the front surface of the base portion 42, and the engaging receiving surface R is provided on the inner surface of the trigger 22. are formed respectively, and the shape of the base portion 42 is changed.
First, the base portion 42 is formed by erecting connecting pieces 44 from both left and right sides of the substrate portion 43 . A clamping piece 48 shaped to fit the contour of the piston 20 projects upward from the upper end of each connecting piece 44 .
As shown in FIG. 6A, from the front surfaces of the pair of connecting pieces 44, locking ribs 46 having a substantially right-angled triangular shape as seen from the side stand as the engaging protrusions. The lateral outer surfaces of the pair of locking ribs 46 and the lateral outer surfaces of the connecting pieces 44 are flush with each other.
The inner surfaces of the left and right side plates 22b of the trigger 22 are used as engagement receiving surfaces R. As shown in FIG. A lower insertion opening A2, which is a gap for inserting the engaging projection, is formed on the lower side of these side plates.
In this embodiment, when the pair of clamping pieces 48 are attached to the piston 20, the lateral outer surfaces of the pair of locking ribs 46, which are the engaging protrusions S, are brought into contact with the locking ribs 46. Therefore, rotation of the stopper 40 can be prevented.
In addition, it is economical because there is no need to change the structure of the ready-made trigger 22 to a great extent and it is not necessary to introduce a part including the engagement receiving surface R.

FIG. 7 shows a trigger ejection device according to a third embodiment of the invention.
In this embodiment, the configurations of the engaging projections S and the engaging receiving surfaces R described above are also changed.
In this embodiment, the engagement plate portion of the first embodiment is omitted, and the contact plate portion 49 is changed to a vertically elongated plate-shaped flange 52, which is used as the engagement protrusion S.
Further, in this embodiment, the lower folding piece is omitted, and the inner surfaces of the left and right side walls 32b of the cover 32 are used as the engagement receiving surfaces R. As shown in FIG.
According to this configuration, the end portion of the vertically elongated plate-like flange 52 is brought into contact with the inner surface of the side wall 32b, so that the rotation of the stopper 40 can be more reliably restricted.
Moreover, since the structure of the ready-made cover 32 is used as it is as the engagement receiving surface R, there is no need to provide a new part having the engagement receiving surface R, which is economical.

2 Ejector 4 Mounting cylinder 6 Ejector body 8 Standing cylinder 8a Inner cylinder 8b Outer cylinder 10 Suction pipe 12 Injection cylinder 13 Cylinder holding cylinder 14 Nozzle
DESCRIPTION OF SYMBOLS 16... Cylinder cylinder 16a... Main cylinder part 16b... Lower folding piece 16c... Upper folding piece 16d... Boss tube 18... Slit 19... Cut and split
DESCRIPTION OF SYMBOLS 20... Piston 21... Recess 22... Trigger 22a... Front plate 22b... Side plate 23... Penetration tube 24... Linking pin 25... Auxiliary wall 26... Pocket 28... Spring (biasing means) 29... Spring main body 30... Hooking piece 32... Cover 32a...Top wall 32b...Side wall 40...Stopper 41...Mounting part 42...Base part 43...Base part 44...Connecting piece 46...Locking rib 48...Pinching piece 48a...Spreading end part 49...Abutting plate part 50...Abutting Rib 50a Contact surface 51a, 51b Horizontal rib 52 Plate-like flange 54 Knob 55 Widened portion 56 Engagement plate 100 Container 102 Mouth and neck A1 Upper insertion port A2 Lower insertion port b Communicating hole D1 Upper stepped portion D2 Lower stepped portion h Horizontal surface i1 Upper slope i2 Lower slope j Vertical surface L Vertical line O Pivot shaft P Pump mechanism R Engagement receiving surface S ... Engagement projection T ... Anti-rotation means V1 ... First check valve V2 ... Second check valve

Claims (3)

It has an ejector body (6) incorporating a pump mechanism (P) for sucking, pressurizing, and pumping the liquid in the container. The ejector (20) is provided with a trigger (22) that reciprocates the piston (20) back and forth in the horizontal cylinder (16) and a biasing means (28) that biases the piston (20) forward. 2) and
A knob (54) is provided vertically from a mounting portion (41) including a pair of clamping pieces (48) for clamping the front portion of the piston (20) from the left and right. a stopper (40) that restricts the retraction of the trigger (22) by interposing it between the tube (16) and the trigger (22) so as to be detachable,
An upper insertion opening (A1) for inserting the piston (20) is formed between the upper ends of the pair of clamping pieces (48),
An engagement projection (S) formed at a suitable location on the stopper (40) and an engagement receiving surface (S) formed on the ejector (2) and capable of contacting the engagement projection (S). R), in a trigger-type jetting device forming anti-rotation means (T) for restricting rotation of said stopper (40) around said piston (20),
Left and right side surfaces of a slit (18) drilled in the front-rear direction in the lower surface of the front end side of the cylinder tube (16) are used as a pair of engagement receiving surfaces (R),
A trigger-type ejection device characterized in that an engaging plate portion (56) extending rearward from the knob portion (54) is fitted into the slit (18) as the engaging protrusion (S). . It has an ejector body (6) incorporating a pump mechanism (P) for sucking, pressurizing, and pumping the liquid in the container. The ejector (20) is provided with a trigger (22) that reciprocates the piston (20) back and forth in the horizontal cylinder (16) and a biasing means (28) that biases the piston (20) forward. 2) and
A knob (54) is provided vertically from a mounting portion (41) including a pair of clamping pieces (48) for clamping the front portion of the piston (20) from the left and right. a stopper (40) that restricts the retraction of the trigger (22) by interposing it between the tube (16) and the trigger (22) so as to be detachable,
An upper insertion opening (A1) for inserting the piston (20) is formed between the upper ends of the pair of clamping pieces (48),
An engagement projection (S) formed at a suitable location on the stopper (40) and an engagement receiving surface (S) formed on the ejector (2) and capable of contacting the engagement projection (S). R), in a trigger-type jetting device forming anti-rotation means (T) for restricting rotation of said stopper (40) around said piston (20),
The biasing means (28) is formed by a pair of left and right springs (28) installed between the ejector body (6) and the trigger (22),
The lower ends of the pair of springs (28) protrude rearward from the trigger (22), and the inner surfaces of the rear ends of the springs (28) serve as a pair of engagement receiving surfaces (R),
As the engaging projections (S), a pair of left and right contact ribs (50) formed on the lateral outer surfaces of the pair of clamping pieces (48) are brought into contact with the engagement receiving surface (R). A trigger type ejection device characterized by : It has an ejector body (6) incorporating a pump mechanism (P) for sucking, pressurizing, and pumping the liquid in the container. The ejector (20) is provided with a trigger (22) that reciprocates the piston (20) back and forth in the horizontal cylinder (16) and a biasing means (28) that biases the piston (20) forward. 2) and
A knob (54) is provided vertically from a mounting portion (41) including a pair of clamping pieces (48) for clamping the front portion of the piston (20) from the left and right. a stopper (40) that restricts the retraction of the trigger (22) by interposing it between the tube (16) and the trigger (22) so as to be detachable,
An upper insertion opening (A1) for inserting the piston (20) is formed between the upper ends of the pair of clamping pieces (48),
An engagement projection (S) formed at a suitable location on the stopper (40) and an engagement receiving surface (S) formed on the ejector (2) and capable of contacting the engagement projection (S). R), in a trigger-type jetting device forming anti-rotation means (T) for restricting rotation of said stopper (40) around said piston (20),
The ejector (2) includes a cover (32) having a pair of left and right side walls (32b) extending vertically from a top wall (32a) covering the upper surface of the injection cylinder (12),
The inner surfaces of the pair of side walls (32b) are formed into a pair of left and right engagement receiving surfaces (R),
A pair of left and right plates protruding laterally outward from the mounting portion (41) as the engaging projection (S)
3. A trigger-type jetting device according to claim 1 or 2, characterized in that a shaped flange (52) is brought into contact with said engagement receiving surface (R) .

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