JP3024808U - Caulking gun - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a caulking gun that simplifies the number of steps for mounting a cartridge and prevents the sealant in the cartridge from dripping when the grip lever is released. A rod tip is attached to a piston pressing plate 34 that moves back and forth in a cartridge holder 24 in which a cartridge containing a sealant is mounted, and a feed lever 38 and a catch lever 41 are loosely fitted to this rod, and A main spring 37 is interposed between the cartridge holder and a catch lever spring 40 between the feed lever and the catch lever, and a lower end of the feed lever is pivotally supported by the gun body 26. The front side of the grip 27 is brought into contact with the front side of the grip lever, and the lower end of the catch lever is brought into contact with the rear side of the grip lever.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a caulking gun for filling a gap formed in a building with a sealant, attaching a cartridge containing a caulking material, and gripping a grip lever and a grip to pour the sealant.

[0002]

[Prior art]

 An example of a conventional caulking gun of this type is shown in FIG. 6 and described below. In this caulking gun, a cartridge holder 1 for accommodating a cartridge accommodating a sealant is provided between a front end plate 2 and a rear end plate 3 each having an insertion recess for inserting a nozzle A1 of a cartridge A. It is configured by connecting with a semicircular plate 1a curved in a semicircular shape.

The gun body 4 has a grip 5 projecting downward and a front portion fixed to the rear end plate 3 of the cartridge holder 1 so as to be integrated with the cartridge holder 1. A lever 6 is rotatably supported by a pin 7.

A rod 8 having a rear end plate 3 and a gun body 4 slidable and a rear end bent in a U shape is inserted in the center of the cartridge holder 1, and the outer peripheral side is raised at the tip thereof. A dish-shaped piston pressing plate 9 is attached.

Then, between the rear end plate 3 and the gun body 4, the feed lever 10 whose lower end is connected to the grip lever 6 at a fulcrum 10a is provided with an insertion hole 10b having a diameter slightly larger than that of the rod 8. The main spring 11 is provided between the feed lever 10 and the rear end plate 3 by drilling and fitting the rod 8 into the rod 8.

Further, an upper end of a catch lever 12 is pivotally supported by a support plate 4a extending to the upper rear end side of the gun body 4 and has a diameter slightly larger than that of a rod 8 bored in the catch lever 12. The insertion hole 12a is inserted into the rod 8, and a catch lever spring 13 is provided between the catch lever 12 and the gun body 4.

Therefore, the catch lever 12 is tilted by the pressing force of the catch lever spring 13, and the insertion hole 12a is tilted to tighten the rod 8 up and down to prevent the rod 8 from sliding rearward. The catch lever 12 can be slid to the vertical direction, and when the catch lever 12 is pushed toward the gun body 4, the tightening of the rod 8 by the insertion hole 12a is released.

Further, since the feed lever 10 is pushed by the main spring 11 and has a relationship close to a right angle with the rod 8, the forward and backward movements of the rod 8 are not hindered, but the grip lever 6 and the grip 5 are If gripped together, the feed lever 10 tilts as the upper end of the grip lever 6 advances, and the insertion hole 10a tightens the rod 8, and the rod 8 advances as the grip of the feed lever 10 increases.

However, when the grip of the grip lever 6 is released, the backward movement of the rod 8 is blocked by the catch lever 12, and the insertion hole 10a of the feed lever 10 slides on the rod 8, so that the rod 8 moves backward. There is no such thing.

In this caulking gun, the catch lever 12 is pushed toward the gun body 4 to release the backward blocking of the rod 8, and then the rod 8 is pulled backward to move the piston pressing plate 9 to the rear end side of the cartridge holder 1. The cartridge A is accommodated in the cartridge holder 1 from the open portion of the upper half surface of the cartridge holder 1 so that the nozzle A1 of the cartridge A is inserted into the insertion recess of the front end plate 2.

Next, after cutting off the tip of the nozzle A1 of the cartridge A, if the grip lever 6 is squeezed, the piston pressing plate 9 advances as described above, so that it is positioned at the rear end of the inside of the cartridge A. Since the piston A2 that is present is pushed forward and the sealant in the cartridge A is pushed out from the nozzle A1, the sealant can be filled in the gap of the building.

[0012]

[Problems to be solved by the device]

 In such a caulking gun, the shape of the piston pressing plate 9 that presses the piston A2 of the cartridge A to pour out the sealant is a dish-like shape with a raised peripheral edge on the piston A2 side. The cross-sectional shape of the piston A2 at does not change from that when it is not pressed.

Further, since the rod 8 having the piston pressing plate 9 attached thereto is prevented from retreating by the catch lever 12 when the grip lever 6 is released from gripping, the rod 8 inside the cartridge A is pressed by the piston pressing plate 9. Due to the remaining pressure and the fact that the shape of the piston A2 does not change, the sealant may be dripped from the nozzle A1 when the grip lever 6 is released from the grip.

The present invention solves the above-mentioned problems of the conventional caulking gun, eliminates the need to push the catch lever against the catch lever spring when mounting the cartridge, and simplifies the number of mounting steps. An object of the present invention is to provide a caulking gun capable of eliminating the dripping of the sealant in the cartridge when the grip lever is released.

Further, when the cutting angle of the nozzle of the cartridge is inappropriate for pouring the sealant, the cartridge is rotated to an angle suitable for pouring the sealant to prevent the sealant from protruding or insufficient filling. The purpose is to provide a caulking gun that can.

[0016]

[Means for solving the problem]

 The present invention relates to means for a caulking gun which achieves the above-mentioned object, which means that a piston pressing plate that moves back and forth in a cartridge holder for mounting a cartridge containing a sealant is attached to a rod tip, and a feed lever is attached to the rod. And a catch lever are loosely fitted, a main spring is interposed between the feed lever and the cartridge holder, and a catch lever spring is interposed between the feed lever and the catch lever. The lower end of the catch lever is brought into contact with the front side of the grip that is pivotally supported by the gun body, the lower end of the catch lever is brought into contact with the rear side of the grip lever, and the front side of the upper end can be locked with a stopper. In addition, in the center of the piston pressing plate, It is desirable to form the ridge Okoshiwa as to press the central portion of the piston in the cartridge.

Further, a cartridge holder, which has a semi-circular cross section and which accommodates a cartridge in which a sealant is accommodated, and which is provided with a piston pressing plate that presses the piston of the cartridge toward the nozzle side, is provided with a grip, a grip lever, and a piston. It is characterized in that it is rotatably supported around the center line of the cartridge holder with respect to the gun body provided with the pressing mechanism.

As means for allowing the cartridge holder to rotate with respect to the gun body, a bearing portion is provided on either the contact surface of the cartridge holder or the gun body at the center line of the cartridge holder and is connected to the piston pressing mechanism. The piston pressing plate has a through hole through which the rod is inserted, and a slide plate is fitted to the cartridge holder fixing plate to form a central hole in the bearing, cartridge holder, or gun body. It is desirable that the cartridge holder fixing plate is inserted into the cartridge holder and the cartridge holder is attached with a fastener to fix the cartridge holder fixing plate to the bearing.

[0019]

[Action]

 In the caulking gun of the present invention, since the shape of the piston pressing plate is formed as described above, when the piston is pressed, the part close to the center of the piston is pressed and the piston is recessed toward the nozzle side. Become.

On the other hand, when the grip lever is released, the rod is only held for a short period of time from when the catch lever is tightened to when the catch lever is pushed by the grip lever to the vertical state at the final time when the grip lever returns. Since the rod is slightly retracted by the feed lever, the piston pressing plate retracts to reduce the pressure in the cartridge, preventing the sealant from dripping.

Further, since the raised ring is formed in the center of the piston pressing plate so as to press the center of the piston in the cartridge, the piston of the cartridge is not depressed when pressed by the piston pressing plate. Since it returns to the planar shape, a negative pressure is created in the cartridge, and the sealant is sucked into the cartridge, so that it is possible to prevent the sealant from dripping from the nozzle.

When the grip lever is not gripped, the biasing force of the main spring is transmitted to the grip lever via the feed lever, and the grip lever creates a gap between the catch lever and the rod. Tightening of the rod by the catch lever is released, so that the rod can move freely and the piston pressing plate can be retracted.

In addition, since the cartridge holder of this caulking gun is rotatable with respect to the gun body, even if the tip of the nozzle of the cartridge is cut diagonally, the nozzle of the nozzle can be cut by rotating the cartridge holder. You can change the direction freely.

According to a second aspect of the present invention, the cartridge holder fixing plate is attached to the bearing portion provided on one of the cartridge holder and the gun body, and the sliding plate is provided between the large diameter portion and the bearing portion of the cartridge holder fixing plate. By intervening the above, the rotation of the cartridge holder is facilitated.

[0025]

【Example】

 Next, an example of implementation of the present invention will be described below with reference to FIGS. In this embodiment, a front end plate 21 having an insertion recess into which the nozzle A1 of the cartridge A is inserted and a rear end plate 22 having a center hole 22a are connected by a semi-circular plate 23. A cartridge holder 24 is formed, the upper half of which is open.

Further, in the gun body 26 in which the grip 25 is formed by press molding or the like, the bearing portion 26 b is formed on the contact surface 26 a that contacts the rear end plate 23 of the cartridge ridge holder 24, and the grip lever 27 is formed. Is rotatably supported by a pin 28.

On the other hand, a large diameter portion 29a is formed on the cartridge holder fixing plate 29, and subsequently, a bearing portion 29b, a fixing portion 29c having the same outer diameter as the bearing hole 26b, and a male screw 29d are sequentially formed, and a resin portion is formed on the bearing portion 29a. After fitting the sliding plates 30 and the like, the support portion 29b is inserted into the center hole 22a of the rear end plate 22.

Next, the fixing portion 29c is inserted into the bearing portion 26b, and the male screw 29d is screwed and fastened with the nut 31, whereby the bearing portion 26b is fastened between the bearing portion 29b and the nut 31. When the cartridge holder fixing plate 29 is attached to the gun body 26, the cartridge holder 24 can be rotatable with respect to the gun body 26.

An insertion hole 32 is formed in the cartridge holder fixing plate 29 and the gun body 26 on the extension of the center line of the cartridge holder fixing plate 29, and a rod 33 is passed through these holes, and a protruding ring 34a is formed between the outer peripheral edge and the central portion. A piston pressing plate 34 formed with is attached to the tip of the rod 33 so as to rotate, and a rod fixing plate 35 is attached to the rear end of the rod 33.

A main spring stopper 36 is loosely fitted on the nut 31 side of the rod 33, and a main spring 37 is interposed between the main spring stopper 36 and the main spring stopper 36, so that the main spring stopper 36 is slightly smaller than the rod 33 provided on the feed lever 38. Through the large-diameter insertion hole 38a.

A feed lever pin 27 a is planted on the grip lever 27, and when the grip lever 27 is gripped together with the grip 25, the feed lever pin 27 a pushes the lower end of the feed lever 38 forward to feed the feed lever 38. The lever 38 is tilted with respect to the rod 33, and the insertion hole 38a of the feed lever 38 tightens the rod 33.

A catch lever spring stopper 39 is loosely fitted to the rod 33 on the rear side of the feed lever 38, and a catch lever spring 40 weaker than the main spring 37 is interposed between the catch lever spring stopper 39 and the catch lever spring stopper 39. Thus, an insertion hole 41a having a diameter slightly larger than that of the rod 33 provided on the catch lever 41 is inserted.

The catch lever 41 is supported by the catch lever fulcrum pin 42 attached to the gun body 26 on the lower side of the back surface thereof by the urging force of the catch lever spring 40, and the lowermost end of the catch lever 41 of the main spring 37. The urging force contacts the rear edge of the grip lever 27, which is separated from the grip 25, and pushes it backward.

Therefore, the upper end of the catch lever 41 is rotated forward, but the upper end of the catch lever 41 hits a stopper 26c provided in the gun body 26 to be in a vertical state, and the insertion hole 41a can tighten the rod 33. Since there is no rod 33, the rod 33 can freely slide back and forth.

However, when the grip lever 27 is gripped together with the grip 25, the grip lever pin 27 a pushes the lower end of the feed lever 38, tilts the feed lever 38 with respect to the rod 33, and the insertion hole 38 a of the feed lever 38 is inserted into the rod. When the grip lever pin 27a further moves forward in this state, the rod 33 is pushed forward.

When the grip lever 27 is gripped, the trailing edge of the grip lever 27 is moved forward and retracted, so that the catch lever 41 is biased by the catch lever spring 40 toward the catch lever 41 so that the upper end of the catch lever 41 moves backward. As it moves, it tilts and the insertion hole 41a tries to tighten the rod 33.

However, in this case, since the rod 33 is about to move forward and the insertion hole 41a tightens the rod 33, the frictional force causes the catch lever 41 to stand upright in the vertical direction. Therefore, the tightening force of the insertion hole 41a to the rod 33 is weakened, and the forward movement of the rod 33 is allowed.

In the caulking gun of this embodiment, when the grip lever 27 is pushed by the main spring 37 and is separated from the grip 25 and the feed lever 38 and the catch lever 41 are vertical, the insertion holes 38a and 41a are rod-shaped. Since the rod 33 is not tightened, the rod 33 can be pulled backward by the rod withdrawing plate 35 to retract the rod 33, and the piston pressing plate 34 can be returned to the vicinity of the rear end of the cartridge holder 24. .

Therefore, from the open state of the upper half of the cartridge holder 24, the nozzle A1 which is in a state where the tip is cut off and the internal sealing can be poured out is inserted into the insertion recess of the front end plate 21. The cartridge A is stored in the cartridge holder 24.

Next, when the grip lever 27 is gripped together with the grip 25, the rod 33 is moved forward as described above, so that the piston pressing plate 34 pushes the piston A2 of the cartridge A, and the pushing force is applied. The sealant can be poured from the nozzle A1 toward the gap of the building.

However, when the grip lever 27 is released, the feed lever 38 returns to the vertical state by the urging force of the main spring 37, and the insertion hole 38 releases the tightening of the rod 33. The feed lever 38 retracts.

At the same time, the lower end of the feed lever 38 pushes the feed lever pin 27 a and rotates the feed lever pin 27 a so as to return the grip lever 27 to the state in which it is separated from the grip 25.

Immediately before the grip lever 27 returns to its original position, the trailing edge of the grip lever 27 pushes the lower end of the catch lever 41 to bring it into a state orthogonal to the rod 33 and tighten the insertion hole 41 a to the rod 33. Since it is released, the rod 33 slightly retracts.

Therefore, the state of FIG. 4 in which the piston A2 of the cartridge A pushes the sealant by grasping the grip lever 27 is changed to the state of FIG. 5 in which the piston A2 is not pushed, so that the pressure on the piston A2 is zero. Becomes

Moreover, since the piston pressing plate 34 has a shape in which the intermediate portion between the outer circumference and the center is raised, when the piston A2 is pressed, the piston A2 is curved as shown in FIG. , When the piston A2 is no longer pressed, it returns to a flat surface as shown in FIG. 5, the negative pressure is created in the cartridge A, and the sealant is pulled back from the nozzle A1. Therefore, the sealant from the nozzle A1 is released when the grip lever 27 is released. It can prevent dripping.

When the grip lever 27 is opened, the rod 33 is in a free state. Therefore, when the gun body 26 side is set to the lower side in FIG. 34 may come out of the cartridge A, and the cartridge A may fall out of the cartridge holder 24.

Therefore, in the present embodiment, the resin friction member 43 shown in FIG. 6 is arranged on the back side of the catch lever spring stopper 39 by inserting the rod 33 therethrough. The friction member 43 is formed by integrally forming a cylindrical portion 43a having a slit (the inner diameter is slightly smaller than the outer diameter of the rod 33) and a collar portion 43b that abuts against the catch lever spring stopper 39. A catch lever spring 40 is arranged on the outer circumference of the cylindrical portion 43a.

Since the cylindrical portion 43b having the slit of the friction member 43 is always in contact with the outer periphery of the rod 33 with elasticity, even if the rod 33 is in a free state, the frictional force of the rod 33 causes Does not move, the rod 33 does not move even if the caulking gun is tilted as described above, and therefore the cartridge A 1 does not drop from the cartridge holder 24. Further, when the rod 33 moves forward by operating the grip lever 27, the frictional force of the friction member 43 is small, so that the rod 33 can move smoothly.

As described above, when the cartridge A is mounted in the cartridge holder 24, the nozzle A1 is cut out in advance or after the mounting so that the sealing can be poured out. In many cases, the sealant is poured out in a direction inclined from the center.

Then, if the gap of the building is in a different direction from this, the direction of the cartridge A must be corrected in the direction of the gap, but the cartridge holder 24 is not supported by the bearing portion with respect to the gun body 26. It can be rotated by the cartridge holder fixing plate 29 attached to 26a, and the cartridge A can be arbitrarily rotated to change the direction of the nozzle A1 to match the direction of the gap.

[0051]

[Effect of device]

 In the present invention, as described above, when the grip lever is not grasped together with the grip, the rod can be pulled by pushing the rod without pulling the catch lever against the spring as in the conventional case. The plate can be retracted to the rear end of the cartridge holder, and the work of mounting the cartridge in the cartridge holder can be performed easily and quickly.

Moreover, when the grip lever is released, the rod retracts slightly, and the deformation of the piston of the cartridge when the sealant is poured out returns to the flat surface. It has an effect that can be prevented.

Further, since the cartridge holder is easily attached to the gun body, even if the nozzle of the cartridge is cut obliquely or at a right angle, the gap of the building is Depending on the direction, the caulking gun can be at an angle suitable for sealant filling, and pouring at an incorrect angle will not cause the sealant to stick out or become improperly filled.

If a bearing portion is formed on either the gun body or the rear end plate of the cartridge holder, and the other portion is rotatably supported by the cartridge holder fixing plate attached to this bearing portion, the cutting direction of the nozzle can be changed. The rotating mechanism of the changing cartridge can be formed reliably and easily.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a cartridge holder rotation attachment mechanism for the gun body.

FIG. 3 is a sectional view taken along line I-I of the above.

FIG. 4 is a sectional view showing a state where a piston pressing plate presses a piston of a cartridge.

FIG. 5 is a cross-sectional view of the piston pressing plate when it is retracted from above.

FIG. 6 is a sectional view of a friction member.

FIG. 7 is a sectional view of a conventional caulking gun.

[Explanation of symbols]

 A cartridge A1 nozzle A2 piston 22a center hole 24 cartridge holder 25 grip 26 gun body 26a bearing 27 grip lever 29 cartridge holder fixing plate 33 rod 34 piston pressing plate 34a raised ring 36 main spring stop 37 main spring 38 feed lever 38a insertion hole 39 Catch lever spring stop 40 Catch lever spring 41 Catch lever 41a Insertion hole 42 Catch lever fulcrum pin

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[Procedure amendment]

[Submission date] October 5, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 4

[Correction method] Change

[Correction content]

Claims (4)

[Scope of utility model registration request] 1. A piston pressing plate that moves back and forth in a cartridge holder for mounting a cartridge containing a sealant is attached to the tip of a rod, and a feed lever and a catch lever are loosely fitted to the rod, and the feed lever and the cartridge are attached. A main spring is interposed between the holder and a catch lever spring between the feed lever and the catch lever, and the lower end of the feed lever is brought into contact with the front side of the grip pivotally supported by the gun body. The caulking gun is characterized in that the lower end of the catch lever is brought into contact with the rear side of the grip lever, and the front side of the upper end can be locked by a stopper. 2. The cogging gun according to claim 1, wherein a raised ring is formed in the center of the piston pressing plate so as to press the center of the piston in the cartridge. 3. A cartridge holder having a semi-circular cross section, in which a cartridge containing a sealant is accommodated, and a piston pressing plate for pressing a piston of the cartridge toward a nozzle side is movably provided, a grip, a grip lever, and a piston pressing member. A caulking gun characterized in that it is rotatably supported around the center line of the cartridge holder with respect to the gun body provided with the mechanism. 4. A bearing portion is provided on any of the contact surface of the cartridge holder and the gun body at the center line of the cartridge holder, and an insertion hole for inserting the rod of the piston pressing plate connected to the piston pressing mechanism is formed. Fit a slide plate to the cartridge holder fixing plate, insert it into the center hole formed in the bearing part, the cartridge holder or the gun body, and then attach the fastener to the cartridge holder to fix the cartridge holder fixing plate. The caulking gun according to claim 4, wherein the caulking gun is fixed to a bearing portion.