JPH0716521A - Caulking gun - Google Patents

Abstract

PURPOSE:To provide a caulking gun which can be easily held by one hand in a well balanced manner and with a nozzle tip being not offset, and is composed of a protected rod backward movement preventing plate which can be easily released. CONSTITUTION:This caulking gun consists of a main trough-like system 1, a cover which acts as a handle 2 concurrently, formed continuously by a storage space 21 located behind the base end frame part 11 of the main through system and an operating handle part 22 positioned close to the longitudinal center of the main through system, a piston rod 3 introduced through the storage space 21 of the cover and handle part 2 and the main trough system 1, and the trigger part 22b of the operating handle part 21, which is arranged in the storage space 21 and connected through a connecting member 5. In addition, the caulking gun is composed of a pressing plate part 4 which moves forward the piston rod 3, resisting against an energization spring, a rod backward movement stopper 6 arranged in the storage space 21 of the cover and handle 2, and a means 7 for releasing the stopper arranged at an appropriate position on the operating handle part 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caulking gun used for filling a crack in a wall surface of a building with a filler.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing a conventional caulking gun. This caulking gun has a notch portion 81a for exposing a nozzle of a filler cartridge at a tip end portion thereof, and a base end frame portion 81b for supporting a base end portion of the cartridge at a base end portion thereof. The main body 81, the piston rod 83 inserted through the trough-shaped main body 81, and the operation handle portion 82 externally attached to the base end frame portion 81b. The operation handle portion 82 includes a fixed grip portion 82a and a trigger portion 82b pivotally supported on the grip portion 82a by a pivot pin 85. A push plate portion 84, which is arranged to be inserted through the piston rod 83 and biased rearward (on the side opposite to the cutout portion 81a) by a spring, is connected to the upper portion of the trigger portion 82b in the surrounding frame portion above the fixed grip portion 82a. Consists of. Further, the rod 83 is provided outside the upper portion of the fixed grip portion 82a.
Is provided, and a rod retreat blocking plate 86 that is spring-biased outward is provided. In use, the operation handle portion 82 is gripped, the rod retreat blocking plate 86 is pressed against the spring in the distal direction, and in this state, the piston rod 83 is pulled out. Then, a filler cartridge (not shown) is loaded into the gutter-shaped main body 81. The tip nozzle part of the cartridge is the cracked part (crack) on the building wall.
And pull the trigger portion 82b. As a result, the push plate portion 84 moves forward with the inserted rod 83 hooked, and the rod 83 moves forward to discharge the filler from the nozzle at the tip of the cartridge.

[0003]

In the above-mentioned conventional caulking gun, the operation handle portion is attached to the outside of the base end portion of the gutter-shaped main body. The gutter-shaped main body is usually about 35 cm long, and the filler cartridge to be loaded has almost the same length. Therefore, when holding the operation handle part arranged at the base end of the gutter-shaped body with one hand, the weight is applied to the front (distal end side) direction of the gutter-shaped body, and the operation balance is unacceptable. As it is very heavy, the workability is poor, such as the handle becoming dull. In addition, since the operation handle and the tip nozzle have a considerable distance (about 35 cm), it is difficult to properly apply the tip of the nozzle to the filling position (cracked portion), and the tip of the gutter-shaped body with the other hand. If not supported, there is a disadvantage that the tip of the nozzle is displaced from the filling position. Furthermore, since the rod retreat blocking plate is arranged outside the upper part of the fixed grip and is exposed, the workability of the releasing operation is poor and the caulking gun itself is damaged and used. There were disadvantages such as not getting any money.

The present invention solves the above problems, and can be easily gripped with one hand in a well-balanced manner, the tip of the nozzle is not displaced, the rod retreat blocking plate is protected, and the rod retreat blocking releasing operation is easy. The aim is to provide a good caulking gun.

[0005]

To achieve this object, the caulking gun of the present invention has the following structure. The caulking gun is a gutter-shaped main body for loading a filler cartridge, and is integrally fixed to the gutter-shaped main body. The caulking gun is located in the rear of the base end frame of the gutter-shaped main body and from the center of the length of the gutter-shaped main body. A cover / handle that is continuously formed with an operation handle located at, a piston rod that is inserted through the accommodating space of the cover / handle and the gutter-shaped body, and the accommodating space of the cover / handle. A push plate portion that is connected to the trigger portion of the operation handle portion through the connecting member and that advances the piston rod against the biasing spring; and a rod retraction stopper provided in the accommodation space portion of the cover / handle. , A means for releasing the rod retreat stopper, which is disposed at a proper position on the operation handle portion.

In the caulking gun having such a structure, the rod advancing push plate portion and the rod retreating stopper are
It is deployed in the accommodation space of the cover and handle,
In addition, the operation handle portion of the cover and handle is arranged closer to the center of the length of the elongated gutter-shaped main body. Therefore, even when a heavy filler cartridge is loaded in the gutter-shaped main body, the handle having the handle portion does not feel much weight. In other words, the tip side of the gutter-shaped main body does not come down due to the weight during the operation, the grip can be held in a well-balanced manner, and the fatigue of the hand is light even during long-time work. Further, since the distance between the operation handle portion held by one hand and the tip nozzle portion is short, the tip of the nozzle can be properly applied to the filling position (cracked portion), and the operability and workability are excellent. Further, since the push plate and the rod retreat stopper are internally provided in the accommodating space, even if the gun itself is dropped, it cannot be damaged. The release operation is convenient because it is located at.

[0007]

FIG. 2 is a perspective view showing a concrete example of the caulking gun according to the present invention.

The caulking gun comprises a gutter-shaped main body 1 for loading a filler cartridge, a cover / handle 2 integrally fixed to the gutter-shaped main body 1, an accommodating space 21 of the cover / handle 2 and the gutter-shaped main body 1. The piston rod 3 that is inserted through and is accommodated in the accommodation space 21 of the cover / handle 2 and is connected to the trigger portion 22b of the operation handle portion 22 via the connecting member 5 to push the piston rod forward. It comprises a plate portion 4, a rod retreating stopper 6 provided in the accommodating space portion 21 of the cover and handle, and a rod retreating stopper releasing means 7 provided at an appropriate position of the operation handle portion 22.

The gutter-shaped main body 1 has a semi-circular cross-section formed of, for example, a metal plate, and has a notch 12 at the front end for admitting a nozzle (not shown) of the filler cartridge. Further, a ring-shaped base end frame portion 11 that supports the base end of the cartridge is provided. The cover / handle 2 is shown in FIG.
As shown in, the operation handle fixed integrally to the gutter-shaped body 1 and located in the rear of the base end frame portion 11 of the gutter-shaped body 1 and the central portion of the length of the gutter-shaped body 1 The part 22 is continuously formed. This cover and handle 2
Is, for example, a hard synthetic resin material, as shown in FIG.
It is composed of a pair of left and right half bodies 2a and 2b having a flat plate shape. The halves 2a, 2b are composed of a rectangular central plate portion 2c, an upper plate portion 2d continuous with an upper end of one end of the rectangular central plate portion 2c, and a lower plate portion 2e continuous with a lower portion of the rectangular central plate portion 2c. .
Each of the continuous plate portions 2c, 2d, and 2e has an inwardly bent portion 2f protruding from the edge portion. The pair of left and right halves 2a and 2b are fixed in a state where the front end surfaces of the bent portions 2f abut (contact with each other). A space between the left and right upper plate portions 2d, 2d is defined as a housing space 21, and the lower plate portions 2e, 2e are grip portions 22a of the operation handle portion 22.
Becomes The cover / handle 2 is, as shown in FIG.
Mounting plates 13 and 13 projecting from the left and right sides of the base end frame portion 11 of the gutter-shaped main body 1 are superposed on the inner surfaces of the upper plate portions 2d and 2d, and fasten with screws. In addition, the mounting plates 13, 13 projecting downward from the left and right sides of the bottom surface of the gutter-shaped main body 1,
The rectangular central plate portions 2c, 2c are superposed on the inner surface and are fixed to the gutter-shaped body 1 by screwing the contact surface portions. Further, between the upper plate portions 2d and 2d, between the central plate portions 2c and 2c, and further between the lower plate portions 2e and 2e, the protruding shaft 2h is provided on one side.
And a hole portion 2g into which the protruding shaft is fitted is provided on the other side to secure the fixing strength.

The operation handle portion 22 is arranged closer to the center of the length of the gutter-shaped body 5. The handle portion 22 includes a fixed grip portion 22a and a trigger portion 22b. The trigger portion 22b having a U-shaped cross section is provided so as to be fitted to the grip portion 22a having a U-shaped cross section. The trigger portion 22b is a rectangular center plate portion 2c, 2c.
A fixed shaft mounted between them, that is, a pivot pin 23 penetrates, so that the fixed grip portion 22a is pivotally supported more rotatably. Further, the trigger portion 22b having a U-shaped cross section extends the upper portions of both side surfaces, and the extension portion 24 and the pushing plate portion 4 are integrally and continuously connected by a connecting member (for example, a connecting shaft) 5. is doing.

The piston rod 3 passes through the base end frame portion 11 and the accommodation space portion 21 and is inserted into the trough-shaped body 1. A push plate portion 4 for moving the rod 3 forward is provided inside the accommodation space portion 21. That is, the rectangular push plate portion 4 having the through hole in the plane is fitted into the rod 3,
A spring 31 that orbits the rod 3 constantly urges it backward. Further, a rod retreat stopper (rod retreat blocking plate) 6 is provided in the rear space of the accommodation space 21. The rod retreat blocking plate 6 having a through hole in the plane is fitted into the rod 3 and is constantly urged rearward by the spring 61. In the normal state, the rod receding prevention plate 6 is inclined, that is, the rod 3
The rod 3 is hooked and locked to prevent the rod 3 from retreating.

The rod retreat blocking release means 7 is provided at an appropriate position of the operation handle portion 22. In the embodiment, it is provided on the upper portion of the trigger portion 22b, that is, on the contact surface (front surface portion) of the bent portions 2f, 2f of the rectangular center plate portions 2c, 2c. The releasing means 7 includes a push button portion 71, a push shaft 72 projecting from an inner surface of the push button portion 71, and a spring portion 7 that biases the push button portion (push shaft 72) 71 forward.
3 and a cam plate 74 corresponding to the push shaft 72 and rotatably supported between the central plate portions 2c and 2c. For example, the cam plate 74 is fitted and arranged on the pivot pin 23. The lower end of the rod retreat blocking plate 6 and the lower end of the cam plate 74 are integrally connected by a connecting shaft 62.

When the caulking gun having such a structure is used, as shown in FIG. 3, the grip portion 22a is grasped and the push button portion 71 is pushed by the index finger of the grasped hand. As a result, the push shaft 72 projects (moves forward) against the spring 73 and rotates the cam plate 74 in the clockwise direction.
The rotation of the cam plate 74 pulls the connecting shaft 62, and the rod retreat prevention stopper 6 is displaced from the inclined state to the vertical state.
That is, the stopper is released. Holding this state, the other hand pulls the rod 3 backward. Push button 71
When the pushing is stopped, the cam plate 74 is returned to the original position by the spring 73, and the stopper 6 is also returned to the original position. For discharging the filler, as shown in FIG. 4, after the filler cartridge is loaded in the gutter-shaped main body 1, the trigger portion 22b is pulled forward. As a result, the trigger portion (extension portion 24) 22b rotates and pulls the connecting member (connecting shaft) 5 against the spring 32. That is, the connecting shaft portion 5 moves forward. At the same time, the push plate portion 4 moves forward in an inclined state against the spring 31, and advances the piston rod 3 in a hooked state. Since the push plate portion 4 is directly moved forward by the connecting shaft portion 5, the rod 3 is smoothly moved by the so-called link action of the connecting shaft portion 5. In this caulking gun, the operation handle portion 1 is attached to the elongated gutter-shaped main body 1 from the center of the length thereof. Therefore, even when a heavy filler cartridge is loaded in the gutter-shaped main body 1, the handle having the handle portion 22 does not feel much weight. In other words, the tip side of the gutter-shaped main body 1 does not come down due to its weight during operation, it can be held in a well-balanced manner, and the fatigue of the hand is light even during long-time work. In addition, the operation handle portion 22 that is held by one hand
Since the distance between the nozzle and the tip nozzle portion of the cartridge is short, the nozzle tip can be properly applied to the filling position (cracked portion) and the operability and workability are excellent. Furthermore,
The push plate portion 4 and the rod retreat stopper 6 form the accommodation space portion 21.
Since the interior is installed in the inside, even if the gun itself is dropped, it is not forgiving that it will be damaged, and since the releasing means 7 of the rod retreat stopper is arranged on the operation handle portion 22 side, the releasing operability is It is convenient.

[0014]

As described above, according to the present invention, the accommodation space for accommodating the push plate portion and the rod retreat preventing stopper,
A cover / handle that integrally and continuously forms an operation handle portion located at the center of the length of the gutter-shaped body 1 is fixed to the gutter-shaped body, and a means for releasing the rod retraction stopper is provided at an appropriate position of the operation handle portion. Therefore, when gripping the handle part with one hand, the balance in operation is good, and the tip side of the gutter-shaped body does not lower due to the weight, and the tip nozzle part of the filler cartridge is not cracked from the cracked part. Disadvantages such as slippage can be eliminated. In addition, since the entire weight is received almost at the center of weight, even if you hold the central handle part with one hand, you do not feel much weight, and there is no fear that your hand will become slack during work, and operability and workability are good. Becomes Further, since the push plate and the rod retreat stopper are internally provided in the accommodating space, even if the gun itself is dropped, it cannot be damaged. Since it is arranged in the above position, it has an excellent effect that the object of the invention is achieved such that the releasing operability is convenient.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example caulking gun.

FIG. 2 is a perspective view showing an example caulking gun.

FIG. 3 is an explanatory view showing a state in which a rod retraction preventing stopper of the example caulking gun is released.

FIG. 4 is an explanatory view showing a rod advancing state of the example caulking gun.

FIG. 5 is a perspective view showing a conventional caulking gun.

[Explanation of symbols]

 1 Gutter-shaped main body 2 Handle also used as cover 3 Piston rod 4 Push plate part 5 Connecting member 6 Rod retraction stopper 7 Release means 21 Storage space part 22 Operation handle part

Claims (1)

[Claims] 1. A gutter-shaped main body for loading a filler cartridge,
A cover that is integrally fixed to this gutter-shaped main body, and has a storage space located behind the base end frame of the gutter-shaped main body and an operation handle located closer to the center of the length of the gutter-shaped main body. A handle, and a piston rod that is inserted through the accommodation space of the handle that also serves as a cover and the gutter-shaped main body,
A push plate portion that is disposed in the accommodation space portion of the cover / handle and that is connected to the trigger portion of the operation handle portion via a connecting member to advance the piston rod against the biasing spring, and the cover / handle handle. A caulking gun comprising a rod retreat stopper disposed in the accommodating space portion and a rod retreat stopper releasing means disposed at an appropriate position of the operation handle portion.