JPH0127901Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a caulking gun that loads a cartridge containing caulking material, pushes out the caulking material inside, and fills the caulking material into gaps such as the joints of glass window frames and exterior materials.

In conventional caulking guns, a holder with a semicircular cross section that holds a cartridge containing caulking material is designed to have a length that corresponds to the length of the cartridge, and the tip of the cartridge is connected to an engagement plate at one end of the holder. The rear end of the cartridge is fitted into the holding member at the other end of the holder.
Therefore, when the lengths of cartridges are different, there is a problem in that caulking guns suitable for each cartridge must be prepared. Of course, there were cases in which a caulking gun suitable for long cartridges was prepared and used for short cartridges, but in this case, the rear end of the cartridge was not held by the holding member, so it was necessary to push out the caulking material. When the rod is advanced, the rear end of the cartridge lifts up, causing problems such as not only preventing smooth advancement of the extrusion rod but also damaging the paper cartridge, making it unusable.

In view of these conventional problems, the purpose of the present invention is to provide a caulking gun that can be used with either long or short cartridges without any problems, and that can be obtained at low cost by adding a simple configuration. shall be.

For this reason, the present invention includes an engagement plate into which the front end of the cartridge engages at one end of a holder having a semicircular cross section that holds the cartridge, and a holding member into which the rear end of the cartridge fits into the other end of the holder. In the caulking gun, the extrusion rod is fixed to the cartridge and penetrates the holding member to extrude the caulking material. To provide a caulking gun in which a ring is fitted onto the outside so that the position can be changed in the direction, and in the case of a short cartridge, the ring is moved and fitted to the rear end of the cartridge.

Next, one embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a holder having a semicircular cross section with an open top for holding a cartridge C, and an engaging plate 2 having a U-shaped opening 2a into which a nozzle of the cartridge C is fitted is fixed to one end. There is.
In the intermediate portion of the holding body 1, circumferential reinforcing ribs 1a, which bulge out in a mountain-shaped cross-section, are formed at appropriate intervals in the longitudinal direction, except near the other end. A bottomed ring-shaped holding member 3 is externally fitted and fixed to the other end of the holding body 1. An operating bracket 4 having a U-shaped cross section when viewed from above is fixed to the outer surface of the bottom wall of the holding member 3, and a handle 5 extends from its lower end. Reference numeral 6 denotes an operating lever which is pivoted to the base end of the handle 5 by a pivot pin 7 at a position a suitable distance from the upper end, and an engagement pin 8 is provided near the upper end. The holding member 3 and the operating part bracket 4
are provided with guide holes 10 and 11 located coaxially with the axes of the holding body 1 and the holding member 3, respectively;
The extrusion rod 12 passes through these guide holes 10 and 11.
is inserted. One end 12 of this extruded rod 12
A piston 13 is attached to the cartridge C to push out the caulking material inside the cartridge C from the nozzle. An operating piece 14 is disposed within the operating bracket 4, and the extrusion rod 12 is inserted through a drive hole 15 formed approximately in the center of the operating piece 14. The engagement pin 8 of the operating lever 6 is engaged with the rear surface of the lower end of the operating piece 14, and an extrusion rod 12 is connected between the holding member 3 and the operating piece 14.
A compression spring 16 is interposed so as to fit onto the outside. 17
is a back lever whose upper end is swingably locked to a hook 18 extending rearward from the upper end of the operating unit bracket 14, and has a locking hole 19 bored in the center thereof.
The extrusion rod 12 is inserted through the extrusion rod 12, and an operating portion 17a thereof is formed at the lower end. There is an extrusion rod 1 between this back lever 17 and the operating part bracket 4.
A compression spring 20 is fitted onto the outside of the spring 2 . A ring 21 having approximately the same diameter as the holding member 3 is fitted onto a portion of the holding body 1 between the engagement plate 2 and the holding member 3 so that its position can be changed in the axial direction of the holding body. . This ring 21 is constructed by joining the ends of a narrow strip with an eyelet 21a,
It is attached by fitting it onto the holder 1 from the locking plate 2 side of one end of the holder 1 in a slightly flattened state, moving it to a position approaching the holding member 3, and then returning it to a circular shape. .

In the above configuration, when a long cartridge C is used, the ring 21 is moved to the other end so as to come into contact with the holding member 3 as shown by the imaginary line in FIG. Then, with the extrusion rod 12 pulled out rearward so that the piston 13 contacts the holding member 3, the rear end of the cartridge C is fitted into the ring 21 and the holding member 3, and the cartridge C is held in the holding body 1. and engage the tip with the engagement plate 2. Next, grasp the handle 5 and press the operating lever 6.
, the lower end of the actuating piece 14 is pressed by the engaging pin 8 at the upper end of the operating lever 6, and the actuating piece 14 tilts diagonally and moves forward with its drive hole 15 locked to the extrusion rod 12. As the extrusion rod 12 moves forward, the piston 13 at its tip presses the caulking material in the cartridge C, and the caulking material is extruded from the nozzle at the tip. At this time, the back lever 17 is displaced as the extrusion rod 12 moves forward so as to release the locking state between the locking hole 19 and the extrusion rod 12. Next, when the gripping force of the operating lever 6 is released, the restoring force of the compression spring 16 causes the operating piece 14 to release its engagement with the extrusion rod 12 and return to its original position. At this time, the back lever 17 is inclined obliquely by the biasing force of the compression spring 20, and its locking hole 19 locks onto the extrusion rod 12, thereby preventing the extrusion rod 12 from retreating. By operating the operating lever 6 in this manner, the extrusion rod 12 is gradually advanced to extrude the caulking material. When the cartridge C is empty, press the operating part 17a of the back lever 17 to release the lock between the push-out rod 12 and the locking hole 19, and pull out the push-out rod 12 backward.
Remove empty cartridge C.

Next, when using the short cartridge C,
The cartridge C is housed in the holder 1 so that its tip engages with the engagement plate 2, and the ring 21 is moved to one end side of the holder 1, so that the rear end of the cartridge C is moved as shown by the solid line in FIG. The ring 21 is positioned so that it fits externally. In this state, by operating the operating lever 6 in the same manner as described above, the caulking material is pushed out from the nozzle of the cartridge C. During this time, the rear end of the cartridge C is held by the ring 21, so there is a risk that it may float up. There is no leakage, and the caulking material is extruded reliably.

According to the caulking gun of the present invention, as is clear from the above description, the engagement plate for engaging the front end of the cartridge is fixed to one end, and the holding member for fitting the rear end of the cartridge to the other end is fixed. In the fixed cartridge holder having a semicircular cross section, a ring is fitted onto the part between the engagement plate and the holding member so that the position can be changed in the axial direction of the holder, so when using a short cartridge. However, by moving the ring and fitting it to the rear end of the cartridge, it will not float up during use, and the caulking material can be extruded reliably. Can be used with any cartridge. In addition, since it is sufficient to simply add a ring, the increase in cost is extremely small even if the ring is used for both long and short lengths, which is a great practical effect.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional front view, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG. 1. 1 is a holding body, 2 is an engagement plate, 3 is a holding member, 12
is an extruded rod, and 21 is a ring.

Claims (1)

[Scope of utility model registration request] An engagement plate into which the front end of the cartridge engages with one end of a holder having a semicircular cross section that holds a cartridge containing caulking material, and a holding member into which the rear end of the cartridge fits into the other end of the holder. In the caulking gun, a ring is attached to a portion of the holder between the engagement plate and the holding member in the caulking gun, which is provided with an extrusion rod that penetrates the holding member and pushes out the caulking material by entering into the cartridge. A caulking gun that is fitted externally so that its position can be changed in the axial direction.