JP3460945B2 - Liquid injection gun - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid pouring gun used for pouring a liquid containing a caulking material, a paint, an adhesive, a grease or the like, which is contained in a cartridge, which is used during the work of a building or a structure. Is.

[0002]

2. Description of the Related Art As is well known, as a liquid pouring gun, there is a rod-shaped rod having a plunger at its tip, and the rod is moved forward to move the plunger forward to be stored inside a cartridge. In the state where the stored liquid is poured out and the rod is retracted, the empty cartridge can be removed from the cartridge loading section and a new cartridge can be loaded. However, in the above-mentioned conventional liquid pouring gun, since the rod greatly extends rearward, it is extremely obstructive at the time of work, and especially when working in a narrow factory, it is impossible to pour liquid in an unreasonable posture. Therefore, the work efficiency is reduced. In order to eliminate such a drawback, as described in Japanese Utility Model Publication No. 3037366, a steel leaf spring having a circular cross section and a return ring at its tip instead of a round rod. It is known that when the plunger is retracted, the leaf spring is folded back and stored under the cartridge loading portion so that it does not extend rearward.

[0003]

However, even the above-described liquid pouring gun has the following drawbacks. First
In addition, since the leaf spring is bent and folded back in a U-shape at the rear of the cartridge loading portion, there is a minimum and maximum radius of curvature within a range in which the leaf spring can be U-shaped, and the diameter of the cartridge is less than or equal to the minimum radius of curvature. No part can be formed.
Therefore, since the diameter of the cartridge loading portion is limited, it is not possible to provide a cartridge loading portion having a size smaller than that diameter. Secondly, since the leaf spring extends below the cartridge loading portion, the total length of the cartridge loading portion is
The length of the leaf spring must be longer than that of the folded leaf spring, and a guide for the leaf spring must be provided outside the lower surface of the cartridge loading section. Therefore, it is not possible to adopt a structure in which the cartridge loading section is made short to facilitate loading of the cartridge, and there is no structural freedom. Thirdly, when the liquid is poured out, the cartridge is loaded, so that it is heavy. Therefore, one hand must hold the handle and lever, and the other hand must support the lower surface of the cartridge loading section to support the weight. I have to. However, since the leaf spring and the return ring move on the lower surface of the cartridge loading section each time the lever is operated, the cartridge loading section cannot be stably supported. For this reason, the hand applied to the lower surface of the cartridge loading portion may be an obstacle, weakening the support of the gun and possibly misaligning the liquid pouring direction. Fourthly, since the handle and the lever have to be provided with a laterally long hole for passing the leaf spring, the labor and time required for the manufacturing work are correspondingly increased, which not only increases the cost but also lowers the strength. Therefore, there is a demand for a liquid pouring gun which can be used in a gun of any structure and which can be manufactured inexpensively without disturbing the liquid pouring operation.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks of the prior art and has been proposed on the basis of the conventional demand. A feed piece provided on a lever is provided behind a cartridge loading section provided on the gun body. The operation frame part and the storage frame part for the feeding strip plate material provided with the plunger at the tip are provided, and the feed piece is operated in the front-back direction in the operation frame portion by the operation of the lever to store the feeding strip plate material. It is characterized in that the liquid is poured out from the cartridge loaded in the cartridge loading portion by advancing the plunger forward by advancing the liquid.

Further, according to the present invention, the storage frame portion for the feeding strip plate material is a hollow circular frame in the longitudinal direction, and the feeding strip plate material made of a metallic material is wound along the inner surface of the circular frame shape and stored. The above-described structure, and the storage frame portion of the feeding strip plate material is a circular frame shape in the vertical direction, and also includes a structure in which a winding drum rotatable by an external operation is stored inside the hollow frame portion.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The following description will explain the present invention based on the embodiments shown in the drawings. 1 is a vertical sectional front view showing a first embodiment of the present invention, FIG. 2 is a vertical sectional view showing a state in which a plunger is advanced, FIG. 3 is a side view of a feed piece, and FIG. 4 is a front view of a feed piece. 5 is an exploded perspective view of the feed piece, FIG.
(A), (B) and (C) are side views showing the process of the feed piece moving forward, and FIGS. 7 (A), (B) and (C) are side views showing the process of the feed piece moving backward. 8 is a vertical sectional side view of the second embodiment of the present invention, FIG. 9 is a vertical sectional view of the third embodiment of the present invention, and FIG. 10 is a vertical sectional view of a storage frame portion of the feeding strip plate material in the embodiment of FIG. It is a figure.

The liquid pouring gun 1 of the present invention comprises a gun main body 2 formed of metal or synthetic resin. The gun main body 2 is located behind the cartridge loading portion 3 and an operating frame portion 4 of a feed piece and for feeding. A grip 4 which is integrally provided with a storage frame portion 5 for the strip plate and extends downward in the operation frame portion 4.
1 is formed.

The above-mentioned cartridge loading section 3 has a cylindrical shape with an open tip, and a lid member 31 is detachably attached to the open tip section by a screw mechanism and a liquid cartridge a is loaded inside the cartridge loading section 3. Then, by closing the open front end of the cartridge loading unit 3 with the lid member 31,
The cartridge a can be stably supported.

The cartridge a has a nozzle b for pouring out liquid at the tip, and the cartridge a at the bottom.
There is a bottom plate c that can move toward the inside of the cartridge a, and when the bottom plate c advances inside the cartridge a, the liquid in the cartridge a is poured out from the nozzle b. When the cartridge a is loaded in the cartridge loading unit 3, the nozzle b projects outward from a small hole 32 formed in the center of the lid member 31, and when the bottom plate c is pressed, the liquid in the cartridge a is discharged. It is poured from the tip of b.

A partition wall 42 for partitioning the cartridge loading section 3 and the actuating frame section 4 is provided with a through hole 43, and the feeding strip plate member 6 inserted into the through hole 43 is the cartridge loading section 3 A plate-like plunger 61 is provided at the tip of the housing 61, the rear end side of which penetrates the through hole 43, and the operation frame portion 4 and the storage frame portion 5 are communicated with each other through the communication port 51. It is stored inside.

The feed strip 6 is a thin strip made of, for example, steel which is highly flexible and has a good restorability, and has a gentle arcuate cross section in the widthwise direction. It can withstand the pressure and can be wound into a ring. The feed strip plate member 6 is linear inside the cartridge loading unit 3 and the actuation frame unit 4, but is wound inside the storage frame unit 5 in a ring shape along the inner peripheral surface.

Inside the actuating frame portion 4, there is a feed piece 7 facing the feed strip 6 and the feed piece 7 is attached to the upper end of an operating lever 8. The upper portion of the operating lever 8 is pivotally supported by the support shaft 81 and is rotatable, and the lower grip portion 83 of the operating lever 8 is urged by the spring material 82 in the direction away from the grip 41. Is retracted inside the operation frame portion 4.

As shown in FIGS. 3 to 5, the above-described feed piece 7 is formed by superposing a lower piece portion 71 having an upward U-shape and an upper piece portion 72 having a downward C-shape in a fitting manner. A first guide groove 74, which is pivotally attached at one end by a pin 73, is formed at the other end of the lower piece 71, and a second guide is formed at the other end of the upper piece 72 and is inclined in the other direction. A guide pin 76 is inserted through the groove 75 in series to position the feed piece 7 inside the forked portion 84 provided at the upper end of the operation lever 8 and is inclined at the left and right sides of the forked portion 84. Third
Each end of the guide pin 76 is inserted into the guide groove 85 and is movably held.

One end of a coil spring 77 for pulling and urging the feed piece 7 to the rear of the operation frame portion 4 is connected to the lower piece portion 71, and the other end of the coil spring 77 is fixed to the storage frame portion 5. I am doing it.

The liquid pouring gun 1 of the present invention is constructed as described above, and in a normal state, the cartridge a is loaded inside the cartridge loading portion 3 and is closed and held by the lid member 31, and the nozzle b is projected to the outside. ing. Then, the grip portion 83 of the operation lever 8 is separated from the grip 41 and extends forward,
The feed piece 7 is positioned behind the actuating frame portion 4 by the coil spring 77 and faces the feed strip plate member 6, and the plunger 61 at the tip of the feed strip plate member 6 comes into contact with the outer surface of the bottom plate c to feed the strip plate member 6. Most of them are wound around the inner peripheral surface of the storage frame 5 and stored (FIG. 1). In this state, the lower frame 7
1 and the upper piece 72 are slightly separated from each other in the vertical direction, so that the feeding strip plate member 6 is not held.

In this state, in order to pour the liquid inside the cartridge a from the nozzle b, the grip 41 and the grip portion 83 are gripped at the same time, and the grip portion 8 is held.
When the operation lever 8 is rotated so that the lever 3 moves closer to the grip 41 (FIG. 2), the bifurcated portion 84 advances and the guide pin 76 moves forward at the moment of rotation, so that the guide pin 76 tilts. While advancing in the range between the first guide groove 74 and the second guide groove 75, the operation of the third guide groove 85 causes the lower piece portion 71 and the upper piece portion 72 to tilt in the direction in which they approach vertically with the pin 73 as the fulcrum. Then, as shown in FIG. 6 (A), the feeding strip plate member 6 is held.

The operation lever 8 is operated by operating the grip portion 83.
When the bifurcated portion 84 is rotated in a direction in which the bifurcated portion 84 is further advanced, as shown in FIG.
When the feed strip 7 is advanced with the guide pin 76 while holding the feed strip 6 and reaches the most advanced state, the grip portion 83 hits the grip 41 and cannot move any further. Therefore, the feeding strip 6 is advanced from the storage frame portion 5 by the forward length of the feed piece 7, and the plunger 61 is advanced by the forward length to push the bottom plate c out from the rear side. The liquid corresponding to the movement amount of is discharged from the nozzle b.

When the gripping portion 83 is released in the forward movement state of the feed piece 7, the operation lever 8 is returned and rotated by the urging force of the support shaft 81.
In this case, immediately after the return rotation, the guide pin 76 moves back within the range of the first guide groove 74 and the second guide groove 75 as shown in FIG. The pin 72 rotates about the pin 73 as a fulcrum so that the pin 72 of the feeding strip plate 6 is released. Then, even if the operation lever 8 is returned and rotated as it is due to the bias of the spring member 82 and the coil spring 77, the feed piece 7 does not hold the feed strip plate member 6 as shown in FIG. 7C. Even if the feed piece 7 and the operating lever 8 return, the feed strip 6 does not return, and when the feed piece 7 is most retracted, the feed strip 6 is not held.

Therefore, every time the operation lever 8 is operated, the feed strip plate member 6 is fed out from the storage frame portion 5 by the length corresponding to the forward movement of the feed piece 7 and moved forward, and the bottom plate c is moved forward by the plunger 61. The liquid in the cartridge a is poured out from the nozzle b. Then, when the bottom plate c moves forward most and the cartridge a becomes empty, the lid member 31 is removed, the cartridge a is taken out from the cartridge loading portion 3, and a new cartridge a is opened from the front end to the inside of the cartridge loading portion 3. do it. When the cartridge a is loaded, the bottom plate c presses the plunger 61 inside the cartridge loading portion 3 so as to retract.
The feeding strip plate material 6 is fed into the storage frame portion 5 and is stored in a state of being wound along the inner peripheral surface, and returns to the initial state.

The second embodiment of the present invention shown in FIG. 8 has a structure in which the cartridge loading portion 3 has a tubular shape which can be attached to and detached from the operating frame portion 4. The specific structure is that the small hole 32 is opened at the closed end of the cylindrical cartridge loading portion 3 whose one end is open, the collar portion 33 is provided on the outer peripheral surface of the open end, and the front side of the operation frame portion 4 is provided. An annular male screw portion 44 is provided on the outer circumference of the partition wall 42 located, and a ring-shaped female screw portion 45 is screwed with the open rear end portion of the cartridge loading portion 3 fitted inside the male screw portion 44. Then, the collar portion 33 and the male screw portion 44 are fastened to each other to firmly hold the male screw portion 44 and the cartridge loading portion 3. Since the cartridge loading section 3 can be removed by removing the female thread section 45 from the male thread section 44, the cylindrical cartridge loading section 3 can be attached to and detached from the operating frame section 4.

With such a structure, the cartridge a
Even if the lengths are different, the liquid pouring gun 1 can be configured by selectively using the cartridge loading portion 3 corresponding to the length, so that the versatility is enhanced. Further, since the cartridge loading section 3 is removed when the cartridge a is attached or detached, the cartridge a can be loaded easily and surely, and the above-mentioned known steel leaf spring provided with a return ring is used. The structure of this embodiment cannot be used for a gun having a structure in which the leaf spring is folded back and stored under the cartridge loading portion when the plunger is retracted. Incidentally, in the present embodiment, the reference numerals not described have the same configurations as the same reference numerals in the above-mentioned embodiment, and the explanation thereof will be omitted.

In the third embodiment of the present invention shown in FIGS. 9 and 10, the left and right shafts 53 provided at the center of the take-up drum 52 are rotatably provided on the left and right wall surfaces of the storage frame portion 5, so that the winding is performed. The take-up drum 52 is rotatably provided inside the storage frame portion 5, and one shaft 5 extending outside the storage frame portion 5 is provided.
3 is provided with a rotation lever 54 to externally wind the winding drum 52.
Is made rotatable, and the rear end portion of the feeding strip plate member 6 is fixed to the surface of the winding drum 52 and wound around the outer peripheral surface.

With such a structure, the cartridge a
When the feeding belt plate member 6 is extended by moving the feeding belt plate member 6 forward and the feeding belt plate member 6 is extended, the take-up drum plate member 6 is wound by rotating the winding drum 52 by the rotation lever 54. Since it retreats until it comes into contact with the partition wall 42, it is not necessary to move the plunger 61 and the feed strip plate member 6 backward by the cartridge a, which is convenient and surely returns the feed strip plate member 6 and the plunger 61 to the original state. Can be returned.

Note that reference numerals not described in FIGS. 9 and 10 have the same configurations as the same reference numerals in each of the above-described embodiments, and thus detailed description thereof will be omitted.

Although the present invention has been described above based on the embodiments shown in the drawings, the present invention is not limited to the above embodiments and can be carried out in any manner as long as the configuration described in the claims is not changed. can do. For example, the operation frame portion 4 may have any configuration as long as it is held only when the feed strip plate member 6 is moved forward and is opened when it is moved backward. Also,
The cartridge loading section 3 may have any configuration as long as the cartridge a can be attached and detached.

[0026]

In summary, according to the present invention, the operation frame portion of the feed piece provided on the lever behind the cartridge loading portion provided on the gun body and the feed frame member storage frame provided with the plunger at the tip end. And a feed section are operated in the actuating frame section by operating the lever so that the feed strip plate member is fed out from the storage frame section, and the plunger is advanced to pour out the liquid in the cartridge loading section. Is characterized by.

Therefore, since the diameter of the cartridge loading portion can be freely set, the cartridge can be applied to a liquid extraction gun of any scale. Further, since the rod does not extend to the rear of the gun and there is no strip plate material on the lower surface of the cartridge loading portion, not only can the cartridge loading portion having any structure be used, but also the workability is good. Further, since the gun can be stably gripped and operated when extracting the liquid, the liquid extracting direction is not erroneous, work efficiency can be significantly improved, and the structure is simple. It has high strength and extremely high practical value.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a state in which the plunger is moving forward in the first embodiment of the present invention.

FIG. 3 is a side view of a feed piece according to the first embodiment of the present invention.

FIG. 4 is a front view of the above feed piece.

FIG. 5 is an exploded perspective view of the above feed piece.

6 (A), (B), and (C) are side views showing the process of the forward movement of the feed piece.

7 (A), (B), and (C) are side views showing the process of the retracted state of the feed piece.

FIG. 8 is a vertical sectional side view of a second embodiment of the present invention.

FIG. 9 is a vertical sectional view of a third embodiment of the present invention.

FIG. 10 is a vertical cross-sectional view of a storage frame portion for a feeding strip plate material according to a third embodiment of the present invention.

[Explanation of symbols]

1 Liquid pouring gun 2 gun body 3 Cartridge loading section 4 Working frame 5 Storage frame 6 Feed strip material 7 feed pieces 8 operation lever 31 lid material 32 small holes 33 Tsuba 41 grip 42 partition wall 43 through holes 44 Male screw part 45 Female thread 51 contact 52 Winding drum 53 axes 54 Lever for rotation 61 Plunger 71 Lower frame 72 Upper frame 73 pin 74 First guide groove 75 Second guide groove 76 guide pin 77 coil spring 81 Support shaft 82 Spring material 83 grip 84 Formal part 85 Third guide groove a cartridge b nozzle c Bottom plate

Claims (3)

(57) [Claims] 1. An operation frame portion for a feed piece provided on an operation lever and a storage frame portion for a feed strip material having a plunger at a tip thereof are provided behind a cartridge loading portion provided on a gun body, and By operating the operation lever, the feed piece is operated in the front-back direction in the operation frame part to let the feed strip plate material out from the storage frame part, and the plunger is advanced to pour liquid from the cartridge loaded in the cartridge loading part. Liquid dispensing gun characterized by 2. A frame for storing the feed strips is a hollow circular frame in the vertical direction, and a feed strip made of a metallic material is rolled up along the inner surface of the circular frame of the storage frame and stored. The liquid pouring gun according to claim 1. 3. A feeding frame plate accommodating frame portion has a vertical circular frame shape, and a winding drum rotatable by an external operation is accommodated inside the hollow frame portion, and the feeding band plate material is a winding drum. The liquid pouring gun according to claim 1, which is wound around the outer peripheral surface.