JP3055474U - Fluid injection gun - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid ejection gun provided with a water amount control mechanism in a grip at a rear lower end of a rear end of the injection gun, which is interlocked with a trigger member capable of finely adjusting the amount of ejected water. A control pin (20) for opening a communication passage (12a) in accordance with an amount of advance and retreat to control a flow rate of a fluid, and a grip (10c).
Stepped column 111 and hollow column 11 above and below the front side of
An operation room 11 having a front opening in which a communication passage 2 is formed, and a communication passage 12a
Opening adjustment pin 60 for opening the opening state and opening adjustment pin 6
0, a trigger member having a substantially C-shape as a whole, and a push button for controlling the opening of a communication passage 12a attached to the stepped column 111 so as to be movable in the front-rear direction. An elastic piece that is urged in a direction to engage with the inclined surface 721 formed at the opening edge of the operation chamber 11 and restricts the turning movement of the trigger member, and allows fine adjustment of the flow rate of the communication passage 12a. 822.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a fluid injection gun used for watering for horticulture, and in particular, is provided with a water amount control mechanism capable of easily and quickly finely adjusting the amount of sprayed water as necessary and easily stopping watering. The present invention relates to a fluid ejection gun.

[0002]

[Prior art]

 In the conventional fluid injection gun, the water flow is controlled by a front trigger-type control switch. Such a control switch is only for opening and closing the fluid path to maintain the maximum amount of jetted water or to stop the jetting of water, and it is not possible to adjust the amount of water required to a very small amount . Therefore, there is a problem that it is very inconvenient to use a fluid injection gun in which the amount of water cannot be adjusted as in the case where a small amount of water is sufficient.

[0003]

[Problems to be solved by the invention]

 The present invention has been made to solve the above-mentioned problems, and is interlocked with a trigger member that can finely adjust the amount of jetted water to a necessary flow rate at a grip formed at the lower rear end of the injection gun. It is an object of the present invention to provide a fluid ejection gun provided with a water volume control mechanism. Another object of the present invention is to provide a fluid injection gun having a water flow control mechanism that can easily fine-tune or stop the water flow by simply pressing a trigger member or a push button for opening control. I do. Furthermore, in the present invention, an elastic piece having an inclined surface for fine adjustment is formed on the bottom surface of the push button, and friction between the inclined surface on the back side of the elastic piece and the opening edge of the cutout portion of the trigger member is formed. An object of the present invention is to provide a fluid ejection gun capable of controlling the amount of jetted water by engagement.

[0004]

According to one aspect of the present invention, there is provided a fluid ejecting gun having a nozzle at a front end opening of a gun housing and a lower inside at a rear end. A grip portion formed with a communication passage communicating with the nozzle, and the other end of a supply hose connected to a fluid supply source at one end can be connected to an upstream portion of the communication passage of the grip portion; In a fluid ejecting gun in which a trigger member for opening and closing a communication passage is provided at a grip portion, a step portion is formed on an inner surface of the communication passage, and a gasket for closing a fluid is fixed to the step portion, and a central opening of the gasket is provided. A control pin, which is provided so as to be able to advance and retreat so that a distal end thereof protrudes from the portion by the supply fluid pressure, opens the communication passage according to the amount of advance and retreat, and controls a flow rate of fluid; Upper and lower steps An operating chamber having a front opening in which a hollow support having a communication column and a passage communicating with the communication passage is formed; and a pointed end inserted into the hollow support so as to be able to advance and retreat in the front-rear direction and protruding into the communication passage. The communication path is opened by pressing the tip of the pin downward.An open-circuit adjusting pin, an elastic body that urges the open-circuit adjusting pin in a direction in which the open-circuit adjusting pin always comes out, and an upper side that prevents the open-circuit adjusting pin from coming out. A generally C-shaped trigger member, which is held on the back side of a front wall having a cutout portion, and which pivotally supports the upper ends of the left and right walls above the opening of the operation chamber. A push button arranged in a notch in the front wall of the trigger member and attached to the stepped column so as to be movable in the front-rear direction, for controlling the opening of a communication passage; and a push button formed at a lower end of the push button. , The operation room An elastic piece which is urged in a direction to be engaged with the inclined surface formed on the opening edge to restrict the turning movement of the trigger member and finely adjust the flow rate of the communication passage; The amount of fluid ejected from the source can be controlled by the trigger member of the grip.

According to a second aspect of the present invention, in the fluid ejecting gun according to the first aspect, the control pin has a two-stage structure, and a plurality of blades are formed at equal intervals in a large diameter portion of the control pin. The wing plate abuts against the inner wall of the intermediate diameter step portion of the communication passage of the grip portion, and guides the control pin in the vertical direction.

According to a third aspect of the present invention, in the fluid ejecting gun according to the first or second aspect, the adjusting pin has a T-shape having a head and a leg with a sharp point. A seal ring is provided on the outer peripheral surface of the leg inserted into the column to seal a gap between the inner wall surface of the hollow column and the outer peripheral surface of the leg of the adjustment pin.

[0007]

[Embodiment of the invention]

 Hereinafter, an embodiment of the fluid ejection gun of the present invention will be described with reference to FIGS. FIG. 1A is an exploded perspective view of the entire fluid ejection gun of the present invention, FIG. 1B is an enlarged view of a portion A, FIG. 1C is a rear view of the push button, and FIG. FIG.

In the drawing, reference numeral 10 denotes an injection gun housing having a plurality of nozzles 10a at a front end opening and a grip 10c formed at a rear lower end with a communication passage 10b communicating with the nozzle 10a. On the front surface of the grip portion 10c, an operation chamber 11 for setting a trigger member 70 described later for controlling the amount of ejected fluid is formed. 20 is a control pin, 30 is a fluid blocking gasket, 40 is a filter screen, 50 is a sealing washer, 60 is an adjustment pin, 70 is a trigger member, 80 is a push button, and 91 and 92 are large and small springs, respectively. is there.

The housing 10 has a grip portion 10c, and an operation chamber 11 having a front opening is formed in front of the grip portion 10c. A stepped column 111 is formed above the operation room 11, and a hollow column 112 is formed below the operation room 11. Recesses 113 are formed on the inner surfaces of the upper ends of both side walls of the operation chamber 11 so that the projections 74 for pivotal support of the trigger member 70 are pivotally connected to each other.

[0010] Further, a flow channel 12 whose diameter is reduced in three stages toward the downstream is formed below the communication passage 10b of the grip portion 10c. An insertion groove 121 is formed at a lower end portion of the middle diameter portion of the flowing water channel 12. Below the small-diameter portion 12a of the flowing water channel 12, a pinhole 122 communicating with the hollow support 112 of the operating room 11 is formed.

The control pin 20 has a two-stage structure. A conical head 21 is formed at an end of a small diameter portion of the pin 20, and a tubular engagement is formed at the step of the control pin 20. An inclined surface 22 is formed. Further, four blades 23 are arranged at equal intervals in the large diameter portion of the control pin 20.

The fluid blocking gasket 30 also has a two-stage structure. That is, the water blocking oblique surface 31 is formed in the step portion inside the gasket 30 so as to come into contact with and separate from the engaging inclined surface 22 of the control pin 20. The filter screen 40 includes a ring body 41 and a sleeve mesh 42 disposed at the bottom of the ring body 41.

The adjusting pin 60 has a T-shape having a head at one end and a leg at the other end, and a seal ring 61 for water sealing is fitted near the tail of the leg. And prevent water leakage. Further, a conical point 62 is formed at the end of the leg. The trigger member 70 is a member that is entirely C-shaped, and includes a front wall 70c and left and right side walls 70a and 70b. The front wall 70c is formed with a conical projection 71 which protrudes inward below the inside of the front wall 70c, and a cutout 72 for setting the push button 80 is formed in the upper part. A support slope 721 is formed at the edge of the notch 72 for setting the pressing button 80, and a notch step 73 is arranged below the slope 721 in the left-right direction. ing.

Further, as described above, outwardly projecting protrusions 74 are formed at the rear corners of the upper ends of both side walls 70 a and 70 b of the trigger member 70. Is pivotally supported by a concave portion 113 formed in the inner surface of the side wall of the operation chamber 11, and the trigger member 70 can be turned by the pivotally attached portion.

Inside the press button 80, a protruding hollow mounting tubular portion 81 is formed, and at the bottom thereof, a fine adjustment inclined surface 82 is formed. Slits 821 are formed on both sides of the inclined surface 82, and elastic pieces 822 are limited between both sides. At the end of the elastic piece 822, a short horizontal portion 823 and a fitting end 824 having a triangular cross section continuous therewith are formed so as to engage with the notch step 73. ing.

The assembly and operation of the fluid ejection gun configured as described above according to an embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 2, the fluid blocking gasket 30 is first fitted into the step of the water passage 12 of the housing 10 of the fluid injection gun, and is firmly engaged with the step between the small diameter portion and the intermediate diameter portion of the housing 10. Combine. Next, the control pin 20 is fitted into the flowing water channel 12 and housed in the middle diameter portion of the housing 10. When the four blades 23 of the control pin 20 are positioned adjacent to the inside of the middle diameter portion of the water channel 12, the inclined surface 22 of the control pin 20 is pushed upward by hydraulic power, and the gasket 30 comes into engagement with the water sealing inclined surface 31. At this time, the conical head 21 of the control pin 20 passes through the gasket 30 and moves to the small-diameter portion of the water passage 12 of the fluid injection gun housing 10. Further, the filter screen 40 is firmly fixed to the insertion groove 121 of the water passage 12, the water sealing washer 50 is fitted to the screw socket 10d of the housing 10, and one end of a hose connected to a fluid supply source (not shown) is connected to the end. Connect to screw socket 10d.

Next, the large spring 91 is fitted around the hollow column 112 of the operation room 11 of the housing 10, and the leg 60 b of the adjustment pin 60 is inserted into the hollow column 112 of the operation room 11. The enlarged head 60a elastically compresses and engages the large spring 91. Further, when the small spring 92 is fitted around the hollow cylindrical portion 81 of the push button 80, one end thereof comes into contact with the inner side surface of the push button 80. Then, the push button 80 is inserted into the stepped column 111 of the operation room 11 using the hollow cylindrical portion 81.

After such a configuration, the trigger member 70 is disposed in the operation chamber 11 of the injection gun housing 10. Then, the projection 74 of the trigger member 70 is elastically pivotally pivotally mounted in the pivot support recess 113 of the injection gun housing 10. At this time, the tip of the conical push projection 71 of the trigger member 70 comes into contact with the distal end of the head 60 a of the adjustment pin 60. Further, the push button 80 easily fits into the notch 72 of the trigger member 70 via the triangular engagement end 824 of the elastic piece 822. The other end of the small spring 92 comes into contact with the end face of the large-diameter step of the stepped column 111 of the operation chamber 11. At this time, the fine adjustment inclined surface 82 of the push button 80 contacts the support inclined surface 721 of the notch 72 of the trigger member 70.

Based on FIGS. 3, 4, 5 and 6, a description will be given of the minimum amount discharge, the small amount discharge, the intermediate amount discharge and the maximum amount discharge of the fluid injection gun of the present invention assembled and configured as described above. I do. When operating the fluid ejection gun of the present invention, first, when the trigger member 70 is slowly drawn toward the operation chamber 11 of the fluid ejection gun, the support inclined surface 721 of the trigger member 70 turns inward. Then, the push button 80 is elastically moved outward by the small spring 92, and the fine adjustment slope 82 of the push button 80 is inclined to the support slope 721 of the trigger member 70. At the same time, the conical pressing projection 71 of the trigger member 70 presses the adjustment pin 60 inward, compressing the large spring 91 against elasticity.

Subsequently, the conical surface of the conical point 62 of the adjustment pin 60 presses the point of the conical head 21 of the control pin 20 downward, thereby reducing the engagement inclined surface 22 of the control pin 20. The gasket 30 is separated from the inclined surface 31 for water sealing. In this state, the flowing water from the supply source passes through the filter screen 40, flows into the communication passage 12a through the gap between the engagement inclined surface 22 and the water sealing inclined surface 31, and flows through the gun housing. It is discharged through the nozzle 10a attached to the downstream end of the nozzle 10.

When the amount of the jetted water reaches the required amount, the trigger member 70 is released. At this time, the conical pressing protrusion 71 of the trigger member 70 is elastically pushed back by the large spring 91, and the support inclined surface 721 of the notch 72 is offset, so that the fine adjustment inclined surface 82 of the press button 80 and the elastic piece 822 are pressed. Will be engaged. In this manner, the trigger member 70 is positioned so as to discharge a constant amount of water to the fluid ejection gun (see FIGS. 3 and 4).

When it is desired to continue discharging the maximum amount of water, as shown in FIG. 6, the trigger member 70 is pressed toward the operation room 11 and lowered. At this time, the support inclined surface 721 of the trigger member 70 is inclined to engage with the horizontal portion 823 of the elastic piece 822 of the pressing button 80, and the engagement fitting end 824 of the elastic piece 822 is inserted into the insertion groove 73 of the trigger member 70. Engage with. Then, the large diameter portion of the conical point 62 of the adjustment pin 60 presses the point of the conical head 21 of the control pin 20. At this time, the engagement inclined surface 22 of the control pin 20 is separated from the water sealing inclined surface 31 of the fluid blocking gasket 30 as much as possible, so that the maximum amount of water can be maintained.

Conversely, when it is desired to stop the injection water, the push button 80 is pushed toward the operation room 11 so that a gap is formed between the fine adjustment inclined surface 82 and the support inclined surface 721. Become. At this time, the trigger member 70 is pivoted outward by the large spring 91, and the support inclined surface 721 is inclined to the fine adjustment inclined surface 82 and the elastic piece 822.

At the same time, the conical pressing projection 71 of the trigger member 70 also moves outward, so that the adjusting pin 60 is elastically springed outward by the large spring 91 and returned to its original position. Subsequently, the control pin 20 is elastically moved upward from the upstream side to the downstream side by water pressure and returns to the old position, so that the engagement inclined surface 22 engages with the water sealing inclined surface 31 and stops water. be able to.

The above-described embodiments and drawings of the present invention are merely examples of the present invention, and the present invention is not limited to these embodiments. Changes / modifications derived from the above embodiments are possible.

[0026]

[Effect of the invention]

 As described above, the fluid ejection gun of the present invention has a nozzle at the opening at the distal end of the gun housing, and has a grip portion at the lower rear end inside which has a communication passage communicating with the nozzle. A fluid injection device, which has a first end connected to a supply hose connected to a fluid supply source at an upstream portion of the communication passage, and a trigger member for opening and closing the communication passage disposed at a grip portion. In the gun, a step portion is formed on the inner surface of the communication passage, and a gasket for closing the fluid is fixed to the step portion, and the gasket can be advanced and retracted so that the tip portion protrudes by the supply fluid pressure from the central opening of the gasket. A control pin that opens the communication passage according to the amount of advance and retreat to control the flow rate of the fluid, and communicates with the stepped column and the communication passage above and below the front side of the grip portion, respectively. Hollow support with passage The communication passage is inserted into the hollow support such that the front end of the control pin is pressed downward by a pointed end protruding into the communication passage. An open-circuit adjusting pin for opening the circuit, an elastic body that constantly urges the open-circuit adjusting pin in a direction in which the open-circuit adjusting pin is pulled out, and a back surface side of a front plate having a cutout portion provided upward so as not to get out of the open-circuit adjusting pin; An entire C-shaped trigger member having the upper ends of the left and right plates pivotally supported above the opening of the operation chamber, and a cutout in a front plate of the trigger member; A push button for controlling the opening of a communication passage attached to the stepped support so as to be movable in the front-rear direction; and a slope formed at a lower end of the push button and formed at an opening edge of the operation chamber. Biased in the direction of An elastic piece that regulates the turning movement of the metal member and allows fine adjustment of the flow rate through the communication path, so that the amount of fluid ejected from the fluid supply source can be controlled by the trigger member of the grip portion. The configuration has the following effects.

That is, according to the present invention, the grip portion formed at the lower rear end of the injection gun is provided with a water amount control mechanism interlocked with a trigger member capable of finely adjusting the amount of jetted water as necessary. The amount of water can be easily fine-tuned as needed. Further, the present invention is easy to operate because the water flow can be finely adjusted or stopped simply by directly pressing the trigger member or the push button for opening control.

Further, in the present invention, an elastic piece having an inclined surface for fine adjustment is formed on the bottom surface of the push button, and the inclined surface of the back side inclined surface of the elastic piece and the opening edge of the cutout portion of the trigger member. Since the configuration is such that the amount of jetted water can be controlled by the frictional engagement between and, the configuration of the water amount control mechanism can be extremely simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a fluid ejection gun according to an embodiment of the present invention, where (a) is an overall exploded perspective view and (b) is an A perspective view.
(C) is a rear view of the push button, (d) is
The perspective view which looked at (c) from the bottom side.

FIG. 2 is a partially cutaway longitudinal sectional view showing an assembled state of FIG. 1;

FIG. 3 shows a state in which the fluid ejection gun of FIG. 2 discharges water with a minimum amount of water, and (a) is a partially cutaway sectional view;
(B) is an enlarged view of a part B, and (c) is an enlarged view of a part C.

FIG. 4 shows a state in which the fluid ejection gun of FIG. 2 discharges water with a small amount of water, and (a) is a partially cutaway sectional view;
(B) is an enlarged view of a D part, and (c) is an enlarged view of an E part.

5A and 5B show a state in which the fluid ejection gun of FIG. 2 discharges water at an intermediate water amount. FIG. 5A is a partially cutaway sectional view.
(B) is an enlarged view of an F portion, and (c) is an enlarged view of a G portion.

6A and 6B show a state in which the fluid ejection gun of FIG. 2 discharges water at a maximum water amount. FIG. 6A is a partially cutaway sectional view.
(B) is an enlarged view of an H portion, and (c) is an enlarged view of an I portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Injection gun housing 10a Nozzle 10b Communication path 10c Grip part 11 Operation room 111 Stepped support 112 Hollow support 113 Depression 12 Flowing water channel 121 Insertion groove 20 Control pin 22 Engagement inclined surface 23 Blade plate 30 Fluid closing gasket 31 Water seal Stop inclined surface 40 Filter screen 41 Ring body 42 Sleeve mesh 50 Water sealing washer 60 Adjusting pin 61 Seal ring 62 Conical pointed end 70 Trigger member 71 Pressing projection 72 Notch for press button installation 721 Support inclined surface 73 Notch Step 74 Projection 80 Press Button 81 Mounting Tubular Part 82 Fine Adjustment Slope 821 Slit 822 Elastic Piece 823 Horizontal Part 824 Fitting End 91 Large Spring 92 Small Spring

Claims (3)

[Utility model registration claims] A gun housing is provided with a nozzle at a front end opening thereof, and a grip portion having a communication passage formed inside the rear end below and communicating with the nozzle. An upstream portion of the communication passage of the grip portion is provided at an upstream portion of the communication passage. In a fluid ejection gun, one end of which is connected to the other end of a supply hose connected to a fluid supply source, and a trigger member for opening and closing the communication passage is provided on a grip portion, a stepped portion is formed on an inner surface of the communication passage. A gasket for closing the fluid is fixed to the stepped portion, and the gasket is disposed so as to be able to advance and retreat so that the tip portion protrudes from the central opening of the gasket by the supply fluid pressure, and the communication passage is moved forward and backward. A control pin that opens and closes in accordance with the flow rate and controls a flow rate of the fluid; and a front opening in which a hollow support having a stepped support and a passage communicating with the communication passage are formed above and below the front side of the grip, respectively. Room and before An opening adjustment pin that is inserted into the hollow support so as to be able to advance and retreat in the front-rear direction, and that presses the tip of the control pin downward with a pointed end projecting into the communication passage to open the communication passage; An elastic body that urges the pin in a direction in which the pin always pulls out, and a back side of a front wall having a cutout portion provided upward so as not to get out of the open-circuit adjustment pin, and upper ends of left and right walls are placed in the operation room. A trigger member having a substantially C-shape, which is pivotally supported above the opening, and which is disposed in a notch in a front wall of the trigger member, and which allows the stepped column to move in the front-rear direction. A push button for controlling the opening of the attached communication passage; and a pivot formed on the lower end of the push button and urged in a direction to engage with an inclined surface formed at an opening edge of the operation chamber. Regulates movement and communicates with said A fluid ejecting gun comprising: an elastic piece capable of finely adjusting a flow rate of a passage; and an amount of fluid ejected from the fluid supply source can be controlled by a trigger member of a grip portion. 2. The control pin has a two-stage structure, and a plurality of blades are formed at equal intervals in a large-diameter portion of the control pin, and the blade is an intermediate diameter of a communication passage of the grip portion. 2. The liquid ejecting gun according to claim 1, wherein the control pin contacts the inner wall of the step portion to guide the vertical movement of the control pin. 3. The adjusting pin has a T-shape having a head and a leg with a sharp tip, a seal ring is provided on an outer peripheral surface of the leg inserted into the hollow column, and the adjusting pin is 3. The fluid ejection gun according to claim 1, wherein a gap between the inner wall surface and the outer peripheral surface of the leg of the adjustment pin is sealed.