JPS634539Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an air caulking gun.

BACKGROUND ART Conventionally, a method of repairing cracks in the outer walls and inner walls of buildings by filling them with caulking material has been used.

However, caulking material for leverage is generally stored in a cylindrical container, with a nozzle installed at one end of the container, and the bottom of the other end is pressurized by a spring or air pressure to fill the container. The caulking material is discharged from a nozzle.

In order to hold the container containing caulking material in this way, there are manual types that have a pistol-shaped handle and discharge the caulking material using a trigger, and mechanical types that are connected to air and discharge the caulking material. There are currently several types of attachments called caulking guns on the market.

However, with the caulking guns currently on the market, there is no installation problem if the length and thickness of the container containing the caulking material is fixed, but due to the capacity of the caulking material, two or more types of lengths and thicknesses are required. When using a container, there is a drawback that it cannot be attached to one type of caulking gun.
In such cases, two or more types of caulking guns are required to correspond to the length and thickness of the container.

In view of this, the present invention allows for easy installation of caulking containers with slightly different lengths and thicknesses using a single type of caulking gun, and also prevents air from leaking during installation. This was done with the purpose of providing an air caulking gun and eliminating the problems of the conventional ones.

Hereinafter, the present invention will be explained with reference to an embodiment shown in the drawings.

The present invention consists of a grip part 2 of the case body 1, an operation part 3 and a pressure adjustment part 4 installed in the case body 1, and a caulking material container holding part 5 attached through the case body 1. It is configured.

The lower part of the case body 1 forms a grip part 2 so that it can be held by hand, and an air inflow hole 6 is formed in the vertical direction.
is formed, and a screw hole 7 is bored at the lower end to serve as a connection port for air supplied from the outside. Further, an air exhaust hole 8 is formed adjacent to and parallel to the inflow hole 6.

A stepped horizontal hole 9 having a predetermined length in a right angle direction and communicating with the inflow hole 6 and the exhaust hole 8 is bored in the vertically intermediate portion of the case body 1, and the operation Part 3 is ready to be attached. Also, from the top surface of the case body 1, the horizontal hole 9
A vertical pressure adjustment hole 10 communicating with the lower end portion is provided.

The operating section 3 includes a spring 11, a piston 12, and a piston mounting bolt 1 in order from the back of the horizontal hole 9.
3 and the push button 14 are attached and assembled.

The piston 12 has a small diameter part 12a that serves as an inner guide for the spring 11 from the back, a large diameter part 12b that forms the seat part of the spring 11, and a rod 12.
A recess 12d is formed at both ends of the large diameter portion 12b, and the piston is inserted into the recess 12d so that the O-rings 15, 15 for sealing air and the O-ring 15 are fitted onto the recess 12d. ring 1
Piston rings 16 and 16 are respectively provided, and these piston rings 16 and 16 fit into the horizontal hole 9 and are slidable in the axial direction.

Further, the middle portion of the large diameter portion 12b has a slightly smaller diameter than the both end portions, and two portions of the circumferential surface are shaved off. Therefore, the large diameter portion 1
2b moves in the axial direction so that the inflow hole 6 and the pressure adjustment hole 10 communicate with each other, the horizontal hole 9
Air can be introduced from the inlet hole 6 to the pressure adjustment hole 10 through the gap between the cut surface and the cut surface.

A screw hole 9a larger than the diameter of the hole forming the sliding surface is formed near the end surface of the horizontal hole 9, and a threaded portion 13a of the piston mounting bolt 13 is screwed into this screw hole 9a. It's summery.

In this state, the piston rod 12c passes through the hole 13b provided in the center of the piston mounting bolt 13, and the screw hole of the push button 14 is screwed into the screw provided at the tip of the rod 12c, and the push button 14 is pressed. The outer diameter of the button 14 is a recess 13 provided in the center of the piston mounting bolt 13.
By slidingly fitting into the push button 14, when the tip of the push button 14 is pushed, the piston 12 integrated with the push button 14 moves to the back against the spring 11. As a result, the inflow hole 6 and the pressure adjustment hole 10, which have been prevented from communicating with each other up to now, are brought into communication via the cut-off surface portion of the intermediate portion of the piston 12.

The exhaust hole 8 is always in communication with the spring chamber 9b into which the spring 11 is inserted through the small hole 2a.

The pressure adjustment hole 10 provided on the top surface of the case body 1 has a screw hole 17 screwed near the top end.
and a small diameter hole 18 provided below, and a pressure adjustment member 44 as an operating member of the pressure adjustment section 4 is attached to this portion.

That is, the pressure adjustment member 44 of the pressure adjustment section 4
has a circular head 4a and a threaded portion 4 at the bottom thereof.
b, further having a small diameter part 4c at the lower part thereof,
A pair of upper and lower recesses 4d, 4d separated by a predetermined length are provided at the lower part of the small diameter portion 4c.
O-rings 19, 19 are inserted into the ring 20, and these O-rings 19, 19 are fitted together on the outside.
is provided.

Therefore, the pressure adjustment member 44 is inserted through the pressure adjustment hole 10 on the upper surface of the main body 1, and the pressure adjustment member 44 is inserted into the small diameter hole 18.
The outer circumference of the ring 20 is fitted so as to be in contact with the ring 20, and then the screw hole 17 and the threaded portion 4b are screwed together.

Further, the pressure adjustment hole 10 and the exhaust hole 8 are in communication via the spring chamber 9a when the push button 14 is not activated.

A large-diameter recess 22 is provided on the upper side surface of the case body 1 on the push button 14 side to which the end of a container 21 containing caulking material is attached. A small hole 23 serving as an air blowing hole is provided between the two.
Air entering the pressure adjustment hole 10 is guided toward the large diameter recess 22 through this small hole 23.

The pressure adjustment member 44 adjusts the area of the small hole 23 to
The air inflow speed is adjusted by changing the screwing depth of the upper part of the ring 20.

In the present invention, a gasket 24 is provided on the inner end surface of the large-diameter recess 22 in contact with one end surface of the container 21 to prevent air from escaping to the outside, and constitutes a rear end close contact portion of the container. .

The caulking material container holding portion 5 has the large diameter recess 2
2, and Patsukin 24, as well as guide bar 2
5, a clamp bolt 26, a plate 27, and other accessories.

The guide bar 25 is formed by bending one bar in parallel in a U-shape in plan so as to hold it at a predetermined interval. penetrates from the push button 14 side and protrudes to the opposite side, and at the same time, the other connected end 25b hangs down at a right angle to form a V-shaped container holding portion 25b with the center portion being at the lowest position. ing.

This V-shaped container holding portion 25b presses the nozzle portion at the other end of the container.

Additionally, a pair of holes 28 and 2 are bored in the case body 1 to pass through the parallel portions of the guide bar 25.
8, a recess 29 is provided in the upper part of the main body 1 in the direction opposite to the push button 14, and a bush 30 is fitted into this recess 29 and fixed integrally with the main body 1 by a detent 31. .

a released end 25a of the guide bar 25;
Each of the parts 25a is provided with a screw, and is tightened with a nut at the front and back through one plate 27 at the end.

Therefore, in this state, when the plate 27 is moved back and forth, the guide bar 25 can be moved back and forth relative to the main body 1.

A screw hole 27a is screwed into the center of the plate 27, and the clamp bolt 26 can be screwed into the screw hole 27a in parallel to the guide bar 25.

The clamp bolt 26 has a round knob 26 on the head.
a, a threaded portion 26b below it, and a small diameter portion 26c, and the tip of the small diameter portion 26c is formed into a recess 26d so as to hold half of the ball 32. is inner groove 2
6e is provided.

A concave portion 30a having a conical tip is formed in the bush 30, and the diameter of the concave portion 30a is large enough to fit the small diameter portion 26c of the clamp bolt 26.

An outer groove 30b is provided on the inner circumferential surface of the recess 30a at a position facing the inner groove 26e provided on the outer circumferential surface of the small diameter portion 26c of the clamp bolt 26. Therefore, the threaded part 26b of the clamp bolt 26 is screwed into the threaded hole 27a of the plate 27, the ball 32 is held in the recessed part 26d at the tip thereof, and the snap ring 33 is fitted into the inner groove 26e of the small diameter part 26c. In this state, the button 30
into the recess 30a.

This allows the ball 32 to freely rotate between the bush 30 and the clamp bolt 26, and makes it difficult to remove the snap spring 33, since the clamp bolt 26 is rotatably attached to the main body 1. be.

As a result, by turning the knob 26a, the plate 27 can move forward or backward, and the guide bar 25 integrated with the plate 27 can also move forward or backward. In other words, if the plate 27 is positioned at an arbitrary position on the threaded portion 26b of the clamp bolt 26, the guide bar 25 is fixed and positioned at that position.

Next, the operation will be explained. First, an air pressure source (not shown) is connected to the screw hole 7 of the air inflow hole 6 of the grip part 2 of the caulking gun.

Next, a cylindrical container 2 containing caulking material.
One side of the case body 1 is brought into contact with the gasket 24 provided on the end face of the large-diameter recess 22 at the top of the case body 1, and at the same time, the nozzle mounting portion on the other side is held by the V-shaped container holding portion 25b of the guide bar 25. .

If the container 21 is too long to be clamped, turn the knob 26a to move the plate 27 forward and the guide bar 25 will also move forward.
A guide bar 2 is attached to the nozzle mounting part on the end face of the container 21.
advance until the container holding portion 25b of No. 5 touches,
If the container 21 is fixed in the contact position, the container 21 will be held in that position.

Conversely, if the length of the container 21 is short and does not touch the container holding portion 25b of the guide bar 25,
If the plate 27 is moved backward by turning the knob 26a of the clamp bolt 26 and fixed at a position where the V-shaped holding portion 25b of the guide bar 25 is in contact with the nozzle mounting portion on the end face of the container 21, it can be held in that position. I can do it. In this embodiment, the container holding portion 25b at the front end of the guide bar 25 is V-shaped, but the shape is not limited to this.

In this state, when you put your finger on the push button 14 of the grip operation part 3 of the grip part 2 of the main body 1 and push it inside the main body 1, the push button 14 moves the piston 12 to the back against the spring 11. The communication between the pressure adjustment hole 10 and the exhaust hole 8, which had been in communication up until now, is cut off, and the air from the inflow hole 6 enters the pressure adjustment hole 10 from the cut-off surface of the piston 12, and from there, the small hole 23 is radially It operates to push the bottom plate of the container 21.

As a result, caulking material is discharged from the nozzle, making repairs and the like easier.

Furthermore, when the push button 14 is released, it returns to its original position due to the repulsive force of the spring 11, and the supply of air to the container 21 is cut off. The air that has been acting on the container 21 until now is exhausted from the exhaust hole 8.

Since the present invention is configured as described above, the front end of the container can be held by the V-shaped container holding part and the rear end can be held by the container rear end close contact part including the air blowing hole, so that the rear end of the container and the container can be held together. It has good adhesion with the rear end close contact part, which not only prevents air leakage, but also allows you to freely adjust and hold the container according to its length even if the length of the container is not constant. is not necessarily limited to a certain size, but it is sufficient even if there are differences in size, as long as it is within the maximum diameter of the close contact part to be clamped and has a size where the front surface touches the V-shaped part of the guide bar. It has the advantage of being compatible with

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the air caulking gun according to the present invention, Fig. 2 is a front view of Fig. 1,
3 is a sectional view of a main part of FIG. 1, and FIG. 4 is a partial perspective view of FIG. 1. 2...Grip part, 3...Operation part, 4...Pressure adjustment part, 5...Caulking material container holding part, 6...Inflow hole, 8...Exhaust hole, 10...Pressure adjustment hole, 14...
...Push button, 21...Caulking material filling container,
22...Large diameter recess, 25...Guide bar, 26...
...clamp bolt, 27...plate.

Claims (1)

[Scope of utility model registration request] A case body includes a grip portion having an air inflow hole and an air discharge hole, an operating portion configured to send air from the inflow hole to a pressure adjustment hole by operating a push button, and an air blowout hole communicating with the pressure adjustment hole. In the caulking gun, the caulking gun has a pressure adjustment part that adjusts the opening degree of the case, and discharges caulking material filled in the container from a nozzle at the tip of the container using air pressure blown from the pressure adjustment hole through the air blowing hole. A container rear end contact part is provided on the upper front surface of the main body, which includes a pressurized air blowout hole and the rear end of the container is brought into close contact with the container. A guide bar having a container holding portion that is bent downwardly into a V-shape is provided, and the rear end of this guide bar is penetratingly supported above the case body, and the protruding length of this guide bar is set to the length of the container. An air caulking gun having a caulking material container holding part that can be adjusted according to the conditions.