JPH019657Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a caulking gun that can level the surface of a building while discharging caulking material (caulking compound) onto the ceiling or wall of a building.

Installing many ceiling panels inside the building,
When a ceiling cloth is attached to the surface, caulking is applied to the grooves and steps in order to erase the grooves and steps that occur at the joints of the ceiling panels, and then the ceiling cloth is attached. However, in the past, workers had to stand on a stepladder and use a spatula in their other hand to apply a small amount of caulk from a piece of board held in one hand to the ceiling, which made it difficult to apply and inefficient. Ta. On the other hand, for filling joints on floors and walls, caulking guns extrude caulking material from a discharge nozzle at the tip and flatten the extruded caulking material with a spatula fixed to the tip of the discharge nozzle. However, this known caulking gun has a spatula fixed to one side of the opening edge of the nozzle tip, so if it is used facing upwards for ceiling applications, the caulking compound will drip out. There were flaws. Furthermore, because the spatula is fixed, it cannot be used on the corners.

This invention provides a caulking gun that prevents caulking material from dripping even when used with the discharge nozzle facing upward, and can also caulk corners as needed.

In other words, this idea removably attaches to the front end of the frame a cylindrical container filled with caulking material, with a discharge nozzle at the tip and an open rear end, and is made of an elastic plate with a central section through which the discharge nozzle is inserted. The base of the spatula with a hole is removably attached so that the discharge nozzle is loosely inserted into the insertion hole and crosses the discharge nozzle diagonally, and the cylindrical container is attached to the rear end of the frame. This is a caulking gun characterized by having an extrusion rod equipped with a piston that can be inserted into the caulking gun so as to be slidable back and forth.

Examples of this invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a frame having a cylindrical shape divided into two parts, and a short cylindrical front support 2 and rear support 3 are fixed to the front end (left end in FIG. 1) and rear end, respectively. The front end of a cylindrical container 4 is removably fitted into the front support 2 . The cylindrical container 4 described above is filled with caulking material 5, has a discharge nozzle 6 fixed to its front end, and is completely open at its rear end. The discharge nozzle 6 is formed of synthetic resin into a thin conical shape with a closed tip, and is opened by cutting off the tip 6a. Then, the discharge nozzle 6 is inserted into the center hole 2a formed in the front support metal 2, and its tip is projected forward of the frame 1.

Further, on the lower surface of the front end of the frame 1 (second
(see figure), a presser foot 7 having an arc-shaped cross section is fixed,
A set screw 8 is screwed into this presser foot 7. Then, the narrow base 9a of the spatula 9 is inserted into the gap between the presser foot 7 and the frame 1, and fixed with the set screw 8 described above. The above-mentioned spatula 9 is made of an elastic plate, and as shown in FIG. 3, its front edge 9b is formed in a pentagonal shape facing in a direction perpendicular to the length direction (the axial direction of the discharge nozzle 6), and approximately at the center thereof. A slightly elongated insertion hole 9c in the front-rear direction for inserting the discharge nozzle 6 is formed in the hole 9c, which is curved when inserting the base 9a into the gap between the presser foot 7.
The discharge nozzle 6 is inserted into the insertion hole 9c, the discharge nozzle 6 and the spatula 9 intersect diagonally, and the tip of the discharge nozzle 6 protrudes from the center of the spatula 9. however,
The front edge 9b of the spatula 9 (see FIG. 1) is located in front of the discharge port of the discharge nozzle 6 (the open end after cutting off the tip 6a).

On the other hand, a handle 10 extending downward from the rear end of the rear support 3 is fixed to the rear end of the frame 1.
A horizontal extrusion rod 11 is supported at the cylindrical container 4 so as to be slidable back and forth, and a piston 12 that is slidable within the cylindrical container 4 is fixed to the tip of the extrusion rod 11. A trigger 14 and a drive lever 15 are each swingably attached to the upper part of the handle 10 by a pin 13. A circular hole slightly larger than the diameter of the push-out rod 11 is bored in the upper part of the drive lever 15, and the push-out rod 11 is inserted through the hole. The coil spring 16 is compressed, and when the trigger 14 is pulled in the direction of arrow P, the protrusion 14a on the upper end of the trigger 14 pushes the drive lever 15 forward, and a part of the circular hole of the drive lever 15 engages with the push rod 11. When the pushing rod 11 is pushed forward and the trigger 14 is released, the drive lever 15 is returned to its original position by the elastic force of the first coil spring 16. And handle 10
A stopper 17 is fixed to the upper end of the drive lever 15 so as to contact the upper end of the drive lever 15 to regulate its return posture. The upper end of the lock lever 18 is swingably connected, and a second coil spring 19 is compressed between the lock lever 18 and the rear surface of the handle 10.
This elasticity engages the extrusion rod 11 with the lock lever 18, locks the extrusion rod 11 from retreating, and prevents the extrusion rod 11 from being pushed back by the pressure of the caulking material in the cylindrical container 4. The lock is released by pushing the lock lever 18 forward against the elastic force of the second coil spring 19.

In the above structure, the cylindrical container 4 and the spatula 9 are attached to the front part of the frame 1, the tip 6a of the discharge nozzle 6 is cut off, the extrusion rod 11 is advanced, and the piston 12 is inserted into the cylindrical container 4. , with the discharge nozzle 6 facing upward, bend the spatula 9 slightly and lightly hit it against a groove or step in the ceiling, then press the trigger 14.
When pulled in the direction of arrow P, the piston 12 moves by a predetermined distance and discharges the caulking material 5 from the discharge nozzle 6.
is extruded and adheres to the grooves and steps of the ceiling. At this time, since the spatula 9 is formed wide and the discharge nozzle 6 protrudes from the center thereof, the extruded caulking material 5 does not drip downward. In addition, since the front edge 9b of the spatula 9 is elastically in contact with the ceiling, by moving the frame 1 horizontally,
The caulking material 5 can be spread out using the front edge 9b of the spatula 9 and smoothed out to eliminate grooves and steps. If the length of the frame 1 is set long enough to reach the ceiling, there is no need to use a stepladder. Also, if spatula 9 is removed,
You can caulk the corners.

In the above embodiment, the shape of the spatula 9 may be triangular, trapezoidal, etc. as long as it has a front edge 9b that is perpendicular to the axial direction. Further, the drive mechanism of the extrusion rod 11 is not limited to the structure shown in the drawings, and for example, the engagement mechanism between the trigger 14 and the extrusion rod 11 may be changed, or the trigger 14 may be omitted and the extrusion rod 11 may be pushed manually. You can do it.

As explained above, in this invention, a spatula made of an elastic plate is removably attached, and the discharge nozzle protrudes from the insertion hole in the center of the spatula. This prevents the material from dripping, and
Caulking material can be easily spread, improving work efficiency. Since the spatula can be removed if necessary, it can also be used for caulking corners. Of course, it can also be used on walls and floors.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of this invention, FIG. 2 is a front view of the frame with the cylindrical container removed, and FIG. 3 is a plan view of the spatula. DESCRIPTION OF SYMBOLS 1... Frame, 4... Cylindrical container, 5... Caulking material, 6... Discharge nozzle, 9... Spatula, 9a
...base, 9b...front edge, 9c...insertion hole, 11
...Extrusion rod, 12...Piston.

Claims (1)

[Scope of Claim for Utility Model Registration] [1] A cylindrical container filled with caulking material, equipped with a discharge nozzle at the tip, and open at the rear end is removably attached to the front end of the frame, and a central portion made of an elastic plate is attached to the front end of the frame. A base of a spatula having an insertion hole for the discharge nozzle is removably attached to the rear end of the frame so that the discharge nozzle is loosely inserted into the insertion hole and intersects diagonally with the discharge nozzle. A caulking gun characterized in that an extrusion rod equipped with a piston that can be inserted into the cylindrical container is attached so as to be slidable back and forth. [2] The caulking gun according to claim 1, wherein the front edge of the spatula is formed in a straight line perpendicular to the axial direction of the discharge nozzle.