JPH1133455A - Caulking gun and its nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a caulking gun which allows the easy adjustment or the pressing force of a caulking cartridge and the adjustment of the opening degree of a nozzle and this nozzle. SOLUTION: This caulking gun consists of an inside cylinder 2 which is formed with staircase-like guide grooves 6 on its front surface and is internally loaded with the caulking cartridge 11, an outside cylinder 3 which projects a guide cylinder 8 from the rear end toward the inside and is formed with engaging projections 7 on the inside surface of its front end, a coil spring 5 which is loaded in this guide cylinder 8, a pressing head 4 which presses the caulking cartridge 11 from the rear part and a pressing cylinder 4a which fits this pressing head 4. The pressing cylinder 4a fitted with the pressing head 4 is loaded into the guide cylinder 8 loaded with the coil spring 5 and the engaging projections 7 are detained to the guide grooves 6, by which the outside cylinder 3 is loaded into the inside cylinder 2. The pressing cylinder 4a is energized by the coil spring 5 to cause the pressing head 4 to press the caulking cartridge 11 from the rear part.

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 caulking a joint portion of a building wall or the like and a nozzle thereof, and more particularly, to a method for facilitating pressing of a caulking cartridge and extruding a caulking material. The present invention relates to a caulking gun and a nozzle for facilitating adjustment of the nozzle.

[0002]

2. Description of the Related Art Caulking is performed around an external sash of a building or at a joint of a precast concrete plate as wet sealing for waterproofing and airtightness.

Conventionally, a caulking gun is often used for this caulking operation. This caulking gun comprises a cylindrical gun body in which a caulking cartridge is mounted, pressing means for pressing a pressing plate provided at the rear of the caulking cartridge, and a lever for applying a stepwise pressing force to the pressing means. Become. The caulking cartridge mounted on the gun body has a cap removed, a hole for extruding the caulking material is formed, the cap is again covered, and the tip is cut out in a size corresponding to the amount of the caulking material to be extruded. Then, the lever is gripped or released by hand to apply a pressing force to the pressing means, and the pressing means provided with the pressing force presses a pressing plate provided at a rear portion of the caulking cartridge, whereby the inside of the caulking cartridge is This is a tool that performs caulking work by extruding a caulking material from the tip of the cap.

[0004] In the coking operation, the amount of the caulking material pushed out is adjusted by adjusting the force of the hand holding the lever of the caulking gun, thereby adjusting the amount of the caulking material pushed out from the nozzle.

[0005]

However, performing the caulking operation while adjusting the pushing amount of the caulking material by adjusting the force of the hand holding the lever, is to hold the lever while adjusting the force with one hand, The work is performed while holding the caulking gun with the other hand, the hand holding the lever does not work well, and the amount of extrusion of the caulking material is too small and there is a problem with waterproofing and airtightness maintenance. There is a problem that the amount of extrusion is too large, and the caulking material protrudes from around the external sash or the joint portion of the precast concrete plate, thereby deteriorating the appearance. Furthermore, the lever must be gripped and released by hand each time the caulking material is extruded.Therefore, the number of times that the lever is gripped and released by hand during caulking is extremely large, causing a problem of hand fatigue. Will happen.

Therefore, according to the present invention, the pressing force of the pressing plate provided at the rear of the caulking cartridge can be easily adjusted without using a special device, and the opening of the nozzle can be easily adjusted. It is an object of the present invention to provide a caulking gun and a nozzle for the caulking gun capable of stably supplying an extruding amount of a caulking material. Another object of the present invention is to provide a caulking gun which can press a pressing plate provided at a rear portion of a caulking cartridge without gripping or releasing a lever during a caulking operation, which does not cause fatigue. .

[0007]

In order to solve the above problems, a caulking gun according to the present invention has a guide groove formed in a cylindrical surface and is closed with an inner cylinder having a caulking cartridge mounted therein. An outer cylinder having a guide cylinder protruding inward from a rear end and having an engagement projection formed on an inner surface on a distal end side; a coil spring mounted on the outside of the guide cylinder; and a press for pressing the caulking cartridge from the rear. A head and a pressing cylinder fitted with the pressing head, wherein the pressing cylinder fitted with the pressing head is mounted on the guide cylinder mounted with the coil spring from outside, and the engaging protrusion is formed in the guide groove. The outer cylinder is attached to the inner cylinder by being locked to the inner cylinder, and the pressing cylinder is urged by the coil spring, so that the pressing head fixes the caulking cartridge. Is pressed from the rear part, so that the engagement position between the guide groove formed in the inner cylinder in a stepwise shape and the engagement protrusion on the inner surface of the outer cylinder can be adjusted stepwise. The pressing force is applied to the caulking cartridge by pushing the outer cylinder one step into the inner cylinder and turning it to engage the engaging protrusion with the guide groove, and applying the urging force of the coil spring to the pressing cylinder to apply the pressing force. By pressing the pressing plate with the head, the caulking operation can be easily performed while holding the caulking gun stably.

Further, the nozzle according to the present invention is provided with a first screw which is screwed to a cap screw of a caulking cartridge.
And a cylindrical first nozzle member provided with a nut portion and a screw portion for adjusting the nozzle opening at the tip end side of the first nut portion, and screwed to the screw portion of the first nozzle member. A second nozzle member provided with a second nut portion. The first nozzle member has a plurality of nozzles extending from the inner surface of the cylindrical portion between the first nut portion and the screw portion toward the center. Forming a through hole between the partition members by arranging the partition member, extending the needle valve from the intersection of the partition members toward the tip end,
A nozzle opening having an inner diameter smaller than the outer diameter of the needle valve is formed at the tip of the second nozzle member, and the second nozzle member screwed to the first nozzle member is rotated. By adjusting the degree of screwing of the screw portion and the second nut portion, the opening degree of the needle valve and the nozzle opening can be adjusted, characterized in that,
By adjusting the screwing state between the second nozzle member and the first nozzle member, the opening of the nozzle can be easily adjusted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
A description will be given based on FIGS. FIG. 1 is a cross-sectional view showing an entire configuration of a caulking gun according to an embodiment of the present invention, FIG. 2 is a developed view showing a shape of a guide groove formed in an inner cylinder, and FIG.
FIG. 3A is a cross-sectional view of the outer cylinder, and FIG.
A sectional view, FIG. 3 (C) is a side view showing a portion of the engagement protrusion,
FIG. 4 is a cross-sectional view of the pressing head and the pressing cylinder, FIG. 5A is a cross-sectional view of the nozzle according to the embodiment of the present invention, and FIG. 5B is a BB cross-sectional view of FIG.

In FIG. 1, reference numeral 1 denotes a caulking gun. The caulking gun 1 includes an inner cylinder 2 in which a caulking cartridge 11 is mounted, an outer cylinder 3 mounted outside the inner cylinder 2, and a caulking cartridge. A pressing head 4 for pressing the pressing plate 12 at the rear of the pressing head 11;
And a coil spring 5 mounted between the outer cylinder 3 and the pressing cylinder 4a to bias the pressing cylinder 4a.
The cap at the end of the caulking cartridge 11 mounted on the inner cylinder 2 is removed, a hole for extruding the caulking material is opened, and a nozzle 21 described later is attached.

As shown in FIG. 2, a guide groove 6 having a stepped shape is cut on the surface of the inner cylinder 2.
A locking groove 6a for locking the engaging protrusion 7 so that the state can be maintained when the engaging position is changed stepwise in a state where the engaging protrusion 7 of the outer cylinder 3 described later is engaged. It is cut into a part of the groove 6. As shown in FIG. 3, the outer cylinder 3 has an engagement protrusion 7 projecting toward the inner surface on the distal end side. The engagement protrusion engages with the guide groove 6 in a state as shown in FIG. Further, the rear end of the outer cylinder 3 is closed, and the guide cylinder 8 is concentric with the outer cylinder 3 from the closed rear end toward the inside.
Are projected toward the inside, and the above-described coil spring is inserted into the guide tube 8.

The pressing head 4 and the pressing cylinder 4a are formed as shown in FIG. 4. The pressing head 4 is fitted into the pressing cylinder 4a to be integrated, and in this state, the pressing head 4 and the guiding cylinder 8 of the outer cylinder 3 are connected from the outside. Be attached. The inner diameter of the pressing cylinder 4a is slightly larger than the outer diameter of the guiding cylinder 8, and the pressing cylinder 4a to which the pressing head 4 is fitted is normally fitted to the guiding cylinder 8 into which the coil spring 5 is inserted. , And are integrated with the outer cylinder 3.

The components of the caulking gun 1 in such a state are combined to function as the caulking gun 1. The assembly of the caulking gun 1 will be described.

First, the caulking cartridge 11 is mounted on the inner cylinder 2. At this time, the caulking cartridge 1
Reference numeral 1 denotes a state in which the cap is closed. After the cap is closed, the cap is removed and the nozzle 21 is replaced. Next, the engaging projections 7 of the outer cylinder 3 in a state where the pressing cylinder 4a in which the coil spring 5 and the pressing head 4 are fitted are fitted to the guiding cylinder 8, and the guiding groove 6 shown in FIG. The engagement is performed from the end, the outer cylinder 3 is pushed into the guide groove 6 of the inner cylinder 2 by one step and turned, and the engagement protrusion 7 is locked in the locking groove 6 a of the guide groove 6. FIG. 1 shows this state, in which the pressing head 4 comes into contact with the pressing plate 12 at the rear of the caulking cartridge 11, the pressing cylinder 4a is urged by the coil spring 5, and the pressing head 4 is moved. The pressing plate 12 is pressed.

As shown in FIG. 5A, the nozzle 21 has a cylindrical first nozzle member 22 which is mounted in place of the cap of the caulking cartridge 11, and a first nozzle member 22.
And a second nozzle member 23 which is screwed to the nozzle member 22.

The first nozzle member 22 is provided with a first nut portion 24 screwed to the caulking cartridge 22 and a screw portion 25 for adjusting the nozzle opening at the tip end of the first nut portion 24. ing. Then, as shown in FIG. 5B, a partition member 26 is arranged from the inner surface of the cylindrical portion between the first nut portion 24 and the screw portion 25 toward the center portion. Is provided with a through hole 27. Further, a needle valve 28 having a length protruding from the screw portion 25 from the intersection of the partition member 26 toward the distal end is provided.

The second nozzle member 23 has a second nut portion 29 which is screwed to the screw portion 25 of the first nozzle member 22 in the vicinity of the base portion thereof. A nozzle opening 30 having an inner diameter smaller than the outer diameter is formed. When the second nozzle member 23 is screwed into the first nozzle member 22 and tightened, the inner surface of the nozzle opening 30 contacts the outer surface of the needle valve 28 and the nozzle 2
1 is closed and the screw between the second nozzle member 23 and the first nozzle member 22 is loosened, so that the distance between the inner surface of the nozzle opening 30 and the outer surface of the needle valve 28 is increased, and the nozzle 21 is used. State.

A method of operating the caulking gun 1 of the present invention will be described. First, the caulking cartridge 11 with the cap closed is mounted on the inner cylinder 2 of the caulking gun 1. Next, place the cap on the caulking cartridge 11
And replace it with the nozzle 21 that has been closed. Then, the engaging projection 7 of the outer cylinder 3 in a state where the pressing cylinder 4a in which the coil spring 5 and the pressing head 4 are fitted is inserted into the guiding cylinder 8, is connected to the end of the inner cylinder 2 of the guiding groove 6 shown in FIG. Then, the outer cylinder 3 is pushed one step into the guide groove 6 of the inner cylinder 2 and turned to lock the engagement protrusion 7 with the engagement groove 6a. In this state, the pressing head 4 presses the pressing plate 1 by the urging of the coil spring 5.
2 is pressed one step, and the caulking gun 1 of the present invention is in a usable state.

The nozzle 21 of the caulking gun 1 in this state
The second nozzle member 23 is loosened, and the amount of the caulking material pushed out from the nozzle opening 30 of the nozzle 21 is adjusted to perform the caulking operation. During the caulking operation, the coil spring 5 expands and the urging force is weakened, and the amount of the caulking material pushed out from the caulking gun 1 decreases. At this time, the second nozzle member 23 is closed once, the outer cylinder 3 is pushed in one step and turned, and the engaging projection 7 is locked in the next locking groove 6a to increase the urging force of the coil spring 5. Then, the second nozzle member 23 is loosened again, and coking is performed by adjusting the amount of the caulking material extruded from the nozzle 21. By repeating this, the caulking operation is performed until the caulking material of one caulking cartridge 11 is used up.

As described above, the caulking gun 1 of the present invention can adjust the position of engagement of the outer cylinder 3 with the inner cylinder 2 by the guide groove 6 formed in the inner cylinder 2 in a stepwise manner. In order to apply the pressing force to the caulking cartridge 11, it is only necessary to push the outer cylinder 3 one step into the inner cylinder 2 and turn it to lock the engaging projection 7 in the locking groove 6a. If so, there is no need to apply a pressing force until the next locking, and the caulking operation can be easily performed while holding the caulking gun 1 stably.

The coil spring 5 only needs to have an urging force corresponding to the time from the state of engagement of the outer cylinder 3 with the inner cylinder 2 to the state where the next engagement is required. Can be used in a range where the urging force does not fluctuate between the most contracted state and the fully expanded state, so that a caulking operation in which the fluctuation of the pressing force on the pressing plate 12 is reduced can be performed.

The nozzle 21 of the present invention can easily adjust the opening degree of the nozzle 21 by adjusting the screwing state of the second nozzle member 23 and the first nozzle member 22, so that the caulking gun 1 In addition to the fact that the fluctuation of the pressing force to the pressing plate 12 is small, it is possible to optimally adjust the required extrusion amount of the caulking material, and once the opening to be adjusted is determined, thereafter, it is almost necessary to readjust. No need for coking.

As described above, in the caulking gun 1 of the present invention, the guide groove 6 of the inner cylinder 2 is formed in a step shape, and the engagement projection 7 of the outer cylinder 3 is formed.
Is engaged with the guide groove of the inner cylinder 2, pushed in one step and turned, and the engaging protrusion 7 is locked in the locking groove 6 a of the guide groove 6, so that a pressing force is applied to the caulking cartridge 11. However, the shape of the guide groove 6 of the inner cylinder 2 of the caulking gun 1 of the present invention is not limited to a step-like shape.
The spiral guide groove 6 is formed on the surface of the inner cylinder 2, and the outer cylinder 3 is screwed into the inner cylinder 2 by engaging the engagement protrusion 7 of the outer cylinder with the spiral guide groove 6. To the caulking cartridge 11.

[0024]

According to the configuration of the caulking gun and the nozzle of the present invention described above, the pressing of the caulking cartridge and the adjustment of the opening of the nozzle of the caulking cartridge can be performed separately. During the pressing, the nozzle is closed, and after the caulking cartridge is pressed, the nozzle is opened, and the coking operation can be optimally adjusted to perform the coking operation.

Further, it is not necessary to hold or release the lever by hand each time the coking material is pushed out, and once the pressing force is applied to the caulking cartridge, the caulking operation is performed only by opening and closing the nozzle for a while. Therefore, fatigue of the hand of the caulking operator can be eliminated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an entire configuration of a caulking gun according to an embodiment of the present invention.

FIG. 2 is a development view showing a shape of a guide groove formed in an inner cylinder.

FIG. 3A is a cross-sectional view of an outer cylinder, and FIG.
FIG. 2A is a cross-sectional view, and FIG. 2C is a side view showing a portion of an engagement protrusion.

FIG. 4 is a sectional view of a pressing head and a pressing cylinder.

5A is a cross-sectional view of a nozzle according to an embodiment of the present invention, and FIG. 5B is a cross-sectional view of FIG.

[Description of Signs] 1 ... Caulking gun, 2 ... Inner cylinder, 3 ... Outer cylinder, 4 ... Press head, 4a ... Press cylinder, 5 ... Coil spring, 6 ... Guide groove, 7 ... Engagement projection, 8 ... Guide cylinder , 21 ... Nozzle, 22 ...
1st nozzle member, 23 ... 2nd nozzle member, 24 ... 1st nut part, 25 ... screw part, 26 ... partition member, 27
... through-hole, 28 ... needle valve, 29 ... second nut part,
30 ... Nozzle opening

Claims (2)

[Claims] 1. An inner cylinder having a guide groove formed in a cylindrical surface and having a caulking cartridge mounted therein, a guide cylinder protruding inward from a closed rear end, and an inner surface on a distal end side. An outer cylinder having an engaging projection, a coil spring mounted outside the guide cylinder, a pressing head for pressing the caulking cartridge from the rear, and a pressing cylinder for fitting the pressing head; Attached from the outside to the guide cylinder fitted with the coil spring, the pressing cylinder fitted with is fitted with the outer cylinder to the inner cylinder by locking the engaging projections in the guide grooves, and A caulking gun, wherein the pressing cylinder is urged by a coil spring, and the pressing head presses the caulking cartridge from the rear. 2. A cylindrical nut having a first nut portion to be screwed to a cap screw of a caulking cartridge and a nozzle portion for adjusting a nozzle opening at a tip end side of the first nut portion. A first nozzle member, and a second nozzle member provided with a second nut portion screwed into a screw portion of the first nozzle member, wherein the first nozzle member has the first nozzle member. A plurality of partition members are arranged from the inner surface of the cylindrical portion between the nut portion and the screw portion toward the center to form a through hole between the partition members, and from the intersection of the partition members toward the tip portion. A needle valve is extended, a nozzle opening having an inner diameter smaller than an outer diameter of the needle valve is formed at a tip end of the second nozzle member, and the second nozzle screwed to the first nozzle member is formed. Rotating the nozzle member, the screw portion and the second nut portion Nozzle caulking gun, characterized in that the adjustable degree of opening of said nozzle opening and said needle valve by adjusting the degree of focus.