JPH06220988A - Plastering trowel - Google Patents

Abstract

PURPOSE:To replace a trowel plate easily without using a tool by previously fixing a back-metal guide holding member onto the surface of the trowel plate and eliminating the normal position of the back metal of the trowel as required. CONSTITUTION:A back-metal guide holding member 4 for sliding, guiding and holding a back metal 1 in parallel is fixed onto the surface of a trowel plate 5. When a shank 3 is mounted on the trowel plate 5, the back metal 1 installed onto the shank 3 through a post leg 2 is inserted into the back-metal guide holding member 4 of the surface of the trowel plate 5, and slid in parallel on the surface of the trowel plate, and the back metal 1 is press-contacted with the back-metal guide holding member 4 by a back-metal press-contacting member 6 at a specified position, and brought to a fixed state. The trowel plate 5 is removed easily for exchange in such a manner that the normal position of the back metal 1 is eliminated from the back-metal guide holding member 4, the shank 3 is gripped and the back metal 1 is slid and removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to plastering irons, and more particularly, to a familiar plastering iron handle, by which a damaged mortarboard can be easily replaced without using a tool. The present invention relates to an improved plastering iron that can be mounted and used.

[0002]

2. Description of the Related Art Conventionally, various plastering trowels have been used, but most of them are fixed to the trowel plate so that the handle can be grasped, and the trowel plate is partially replaced with the trowel plate. You can see what made it possible. This is because the trowel plate is particularly thin, such as 1 mm thick, so that the trowel plate fits well on the coated surface. When the mortarboard is worn out and cannot be used anymore, in order to continue to use the handle that has been worn for a long time and is easy to use, the mortarboard is pre-screwed with screws. It is attached to gold so that the trowel board can be replaced.

[0003]

In the conventional plastering iron in which the trowel plate can be replaced, the trowel plate is replaced because the trowel plate is attached to the back metal with the handle by using the screw as described above. To do this, you need to loosen the screw, but this type of plastering trowel that has been used up is often clogged with cement or mortar stuck in the thread groove, and it is often impossible to replace it because a screwdriver cannot be used. It was

The present invention has been made in view of the above points, and there is no possibility that the screw groove is clogged and the screwdriver cannot be used and the mortar plate cannot be replaced. An object of the present invention is to provide a plastering iron in which the iron plate can be easily removed from the spine and the iron plate can be exchanged and attached to the handle.

[0005]

In order to achieve the above object, in the plastering iron of the present invention, a spine formed at least in an elongated predetermined shape and having a handle 3 attached to the surface thereof via a column base 2. A metal 1, a trowel plate 5 having a back metal guide holding member 4 fixed to the surface for guiding and holding the back metal 1 so that the back metal 1 can slide freely in parallel with the surface of the mortar plate 1; A back metal pressure contact member 6 for pressing the back metal 1 against the back metal guide holding member 4 to bring them into close contact with each other, and positioning the back metal 1 at a predetermined position with respect to the back metal guide holding member 4. Has become.

The back metal 1 has a U-shaped cross section, while the back metal guide holding member 4 accommodates the back metal 1 so that the cross-section closely surrounds the back metal 1 and the upper part thereof is The column bases 2 may be opened at a predetermined interval so that the column bases 2 can pass therethrough, and each of the sheath-shaped back metal receiving boxes provided with a contact metal 4b with which the front end of the accommodated back metal 1 abuts has a predetermined length.

As the back metal pressure contact member 6, a permanent magnet which can be mounted on the inner lower surface of the back metal 1 having a U-shaped cross section is used, and the back metal 1 is housed in the back metal receiving box 4. With the front end of the back metal 1 abutting against the stopper metal 4b at the end of the back metal receiving box 4, the stop groove 1a formed on the upper surface of the back metal 1 and the back metal receiving box corresponding to the groove 1a 4 A pair of hanging grooves formed on the upper edge
A stopper 7 that can be attracted to the permanent magnet and can be commonly fitted to the 4a and 4a can be provided so as to protrude from the side surface of the back metal receiving box 4.

The back metal 1 has a roof-shaped portion having a trapezoidal cross section, and the outer surface is formed in a predetermined taper length so that the width and height gradually decrease in the longitudinal direction. On the other hand, the back metal guide holding member 4 has a transverse cross section formed in a sheath-like shape with an open upper portion so as to accommodate the back metal 1, and when the back metal 1 is inserted, the outer peripheral surface of the back metal 1 is inserted. Has a width and height such that the end portion of the spine holder 1 on the side narrowed in the longitudinal direction is substantially aligned with the corresponding end portion of the guide holding member 4 in a state of being in close contact with the sheath-shaped inner surface of the guide holding member 4. The back portion of the back metal 1 which is gradually reduced to have a tapered predetermined length and which is housed in the back metal guide holding member 4 and is in a close contact state,
It is a good idea to press the back metal pressing member 6 for pressing.

As the back metal pressure contact member 6, the back metal guide holding member 4 is provided with hooking grooves 4d, 4d of a predetermined width, which are formed at the rear ends of the side walls 4f, 4f which are inclined to face each other. When inserting the press-contact member 6, a small-width bending piece 6a formed on one side of the U-shaped opposite side pieces that widen the mouth is fitted into a small groove 4g formed in a hook shape behind the bottom of the hanging groove 4d. Is formed so that the end portion of the spine bar pressure contact member 6 projects from the side wall 4f of the guide holding member 4, and when the spine bar is inserted into the hanging grooves 4d, 4d in a U-shape in a compressed state. Guide holding member 4
It is advantageous to use a U-shaped leaf spring adapted to press the back part of the back metal 1 housed in.

[0010]

When the handle is attached to the trowel plate in the plastering iron configured as described above, the back metal 1 fixed to the surface of the mortar metal plate 5 is attached to the back metal 1 attached to the handle 3 via the column base 2. It can be inserted into the holding member 4 and slid in parallel with the surface of the trowel plate, and the back metal 1 can be brought into a fixed state by pressing the back metal 1 against the back metal guide holding member at a predetermined position by the back metal pressing member 6. On the other hand, when it is desired to remove the damaged mortar plate 5 for a new mortar plate for the handle 3 which is familiar by using the plaster trowel, no tool is required and the back guide guide holding member 4 is used. Can be easily removed by releasing the orientation of the back metal 1 and holding the handle 3 to slide the back metal 1 away from the back metal guide holding member 4.

When a permanent magnet is used as the back metal pressure contact member 6 in the above, the back metal guide holding member in which the back metal 1 is inserted and held by the permanent magnet 6 inserted into the inner lower surface of the back metal 1 having a U-shaped cross section. On both sides of the upper portion of the back metal receiving box 4, the stoppers 7 straddling the upper surfaces of the back metal 1 and the back metal receiving box 4 are also simultaneously attracted by the attractive force of the permanent magnet 6 so that they can be easily removed. The gold 1 can be pressed and fixed.

When a U-shaped plate spring is used as the back metal pressure contact holding member 6, the back metal is held in the back metal guide holding member 4 in which the elongated outer peripheral portion closely accommodates the tapered back metal 1. By inserting 1 and pressing the back surface of back metal 1,
The back metal 1 can be easily detached from the back metal guide holding member 4 so that the back metal guide holding member 4 can be brought into a pressure contact fixed state.

[0013]

Embodiments of the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the embodiment.

1 to 5 show a first embodiment of the present invention. FIG. 1 is a perspective view of the entire plastering iron and FIG. 2 is an exploded perspective view thereof.

The plastering iron shown in the figure is a trowel plate 5 with a side plate having a thickness of about 1 mm, which is slightly bendable, and which is suitable for corner coating. On a trowel plate 5 made of a rectangular steel plate having a predetermined length and width, a spine receiving box 4 for accommodating and fixing a spine 1 having a handle 3 attached is spot-welded slightly behind the center line of the surface.
It is attached by 4p etc. (In the following figures, the right direction also indicates the front.) The back-cage receiving box 4 has a cross section of a predetermined U-shape so that the back-cash 1 can be inserted and held. The upper part of the column base 2 of the handle 3 is opened at a predetermined interval in close contact with the outer periphery so that the base part of the handle 3 can move in the front-rear direction, and the front end, which is the longitudinal end of the housed back bar 1, is abutted. The stopper 4b is provided in the end portion and is formed into a predetermined sheath-like length. Then, a small columnar stopper 7 that can be attracted to a magnet for suppressing the back-and-forth movement of the back metal 1 can be inserted at a predetermined position on the rear upper surface at a position slightly away from the rear end, so that the upper edge 4e facing each other can be inserted. , 4e are formed with a pair of hanging grooves 4a, 4a. Further, the hit bar 4b is formed by raising the bottom plate 4d of the receiving box 4 at the front end of the back metal receiving box 4, and the end portions of the side walls 4c, 4c facing each other of the receiving box 4 are formed. Can be bent inward to form a pair of contact pieces 4b ', 4b' (Fig. 4,
(See FIG. 5).

On the other hand, a back metal 1 to be inserted into the back metal receiving box 4
Has a U-shaped predetermined length with a predetermined width and a predetermined height so that its cross section can slide closely on the inner surface of the back metal receiving box 4.
A handle 3 is attached to a predetermined position in front of the central portion in the longitudinal direction of the upper surface (bending intermediate portion surface) via a column base 2, and when the handle 3 is inserted into the back money receiving box 4, its front end is the above-mentioned. It is formed in substantially the same length so that it comes into contact with the stopper metal 4b and the rear end face thereof coincides with the rear end face of the back metal receiving box 4.
Then, on the upper surface of the back metal 1, a position at a predetermined distance from the rear end surface of the back metal, that is, on the upper surface of the back metal receiving box 4 when the front end of the back metal 1 comes into contact with the contact metal 4b of the front end of the back metal receiving box 4. A stop groove 1a is provided at a position corresponding to the pair of hook grooves 4a, 4a, into which the small column stop plug 7 can be inserted.

The back metal 1 is designed to accommodate a plurality of permanent magnets 6, 6, ---- on the lower surface of the U-shaped interior, and the back metal 1 is inserted into the back metal receiving box 4. The front end is brought into contact with the hit gold 4b so that the stop groove 1a on the upper surface of the back metal 1 and the hanging grooves 4a, 4a formed on the upper edges 4e, 4e of the upper surface of the back metal receiving box 4 are aligned with each other. When a stopper 7 that can be attracted to a small columnar magnet having a small cross section and a predetermined length is fitted in the stopper groove 1a and the hanging grooves 4a, 4a in common, the stopper 7 is installed in the back metal 1. The permanent magnet 6 is attracted to the permanent magnet 6 to prevent the back metal 1 in the normal position in the back metal receiving box 4 from moving in the front-back direction. When the permanent magnet 6 is attracted to the permanent magnet 6, the stopper 7 projects a little in the left-right direction from both side walls 4c, 4c of the back metal receiving box 4 to form a clue when the trowel plate 5 is replaced ( (See FIG. 1).

Although this embodiment is constructed as described above,
When the mortar plate 5 is worn down and it is desired to replace the mortar plate 5 from the handle 3, both ends of the stopper plug 7 protruding left and right from the side wall 4c, 4c of the back metal receiving box on the upper surface of the mortar plate are finger-operated. By pinching and pulling up, the back metal 1 can be moved from the back metal receiving box 4, and by gripping the handle 3 and pulling it backward with respect to the mortar plate 5, the back metal 1 with the handle fixed can be pulled out. . Then, with respect to the new trowel plate 5, the handle 3 to be reused is grasped, and the back plate 1 thereunder is inserted into the back metal receiving box 4, and the stop groove 1a on the upper surface of the back metal and the upper surface of the back metal receiving box 4 are inserted. By fitting the stopper plug 7 over the hanging grooves 4a, 4a and adsorbing the stopper plug 7 to the magnet 6 on the inner surface of the back plate 1, the mortar plate 5 can be fixed to the original handle 3 which is familiar. It is possible, and these operations can be easily performed without any tools.

FIG. 6 shows another embodiment in which the back metal 1 is fixed to the back metal receiving box 4 by using a permanent magnet, as in the first embodiment. In the present embodiment, the back metal receiving box 4 mounted on the upper surface of the trowel plate 5 by spot welding or the like is
Unlike the first embodiment, the front upper wall is provided on the front upper surface of the receiving box 4.
4m, a rear upper wall 4n is formed on the rear upper surface, and an upper window 4l having a predetermined length is formed therebetween. Then, after the rear end of the back metal 1 formed in the same manner as in the first embodiment is inserted obliquely through the rear casing back through the rear casing rear opening of the upper window 4l of the back metal rear casing 4, the horizontal direction The front end of the back metal is brought into contact with the stopper metal 4b by sliding it forward (to the right in the drawing), and the stopper 7 is attached in the same manner as in the first embodiment. Therefore, when replacing the trowel plate 5 with the handle 3, the stopper 7 is removed, and the reverse operation of the above-mentioned mounting is performed, so that no tool is required and the mortar plate 5 is replaced.
After removing the back cover 1 below the handle 3 from the back cover 4 on the surface,
A new trowel plate 5 can be attached to the original handle 3 to be reused.

A third embodiment of the present invention is shown in FIGS. 7 and 8. FIG. 7 is a perspective view of the entire plastering iron, and FIG. 8 is an exploded perspective view thereof.

The plaster trowel shown in the drawing is a trowel plate 5 with a back metal having a thickness of about 1 mm, which is similar to that of the first embodiment. On a trowel plate 5 made of a rectangular steel plate having a predetermined length and width, a sheath-shaped back metal guide holding member 4 for accommodating and fixing a back metal 1 having a handle 3 attached thereto is spot-welded slightly on the center line of the surface. Etc. are installed.

The back metal 1 in this embodiment has a roof-shaped portion having a trapezoidal cross section, and side walls 1f, 1f facing each other and facing outwardly gradually increase the width and height of the outer surface in the longitudinal direction. It is tapered to a predetermined length so as to decrease. Then, a handle 3 is attached via a column base 2 at a predetermined position in front of the central portion of the upper surface in the longitudinal direction. In this case, instead of forming the back metal 1 with a steel plate or the like, the back metal 1 may be formed with a die-cast block.

On the other hand, the back metal guide holding member 4 for inserting and holding the back metal 1 has side walls 4f, 4f whose lateral cross-sections face each other so as to guide and accommodate the back metal 1 and incline inward. The upper part is opened to form a sheath shape, and when the back metal 1 is inserted, the outer peripheral surface of the back metal 1 narrows in the longitudinal direction of the back metal 1 in close contact with the sheath-shaped inner surface of the guide holding member 4. The width and height are gradually reduced so that the tip substantially coincides with the corresponding end of the guide holding member 4, and is formed to have a predetermined length. Then, at the rear ends of the opposite side walls 4f, 4f of the spine guide holding member 4, hooking grooves 4d, 4d having a predetermined width are formed at a distance from the rear end edge and the spine accommodated in the guide holding member 4 is held. A U-shaped plate spring 6 which is a back metal pressing member for pressing the rear end of the first pressing member 1 to press it against the guide holding member 4 is formed to be inserted and held.

Each of the facing hanging grooves 4d, 4d is formed with a hook-shaped small groove 4g at the rear of the bottom of the groove, and the U-shaped leaf spring 6 having a widened mouth is compressed in a state where the mouth is closed. When inserting into the hanging grooves 4d, 4d, the opposite side pieces 6b,
A small width bending piece 6a formed on one side of 6b is inserted into the above-mentioned small groove 4g to prevent upward disengagement and U in the compressed state.
The space between the opposing side pieces 6b, 6b of the letter-shaped leaf spring 6 expands to press the back portion of the back metal 1 housed in the back metal guide holding member 4 to press and fix the back metal 1 to the back metal guide holding member 4. (See FIG. 9). Further, the U-shaped leaf spring 6 is formed so as to slightly project to the left and right from both side walls 4f, 4f of the holding member 4 when inserted into the sheath-shaped back metal guide holding member 4. The holding member 4 can be easily attached and detached. Then, the U-shaped plate spring 6 is detached from the back metal guide holding member 4 by pulling it upward by pinching the end portions of the side pieces 6b, 6b which are opened from the side wall and are pulled up. It is possible.

This embodiment is constructed as described above, but when replacing the trowel plate 5 of the plastering trowel with a new trowel plate, the slanted side wall 4f of the sheath-shaped back metal guide holding member 4 on the upper surface of the trowel plate 5 is replaced. ，
The leaf springs 6 are detached from the back metal guide holding member 4 by pinching the end portions of the side pieces 6b, 6b of the U-shaped leaf springs 6 protruding from 4f on the opening side and pulling them upward. Back payment 1
The pressure on the handle 3 is released, and the handle 3 is the same as in the first embodiment.
Can be gripped and pulled backward with respect to the trowel plate 5 to separate the back metal 1 to which the handle 3 is fixed from the trowel plate 5. Next, after inserting the back metal 1 attached to the handle 3 to be reused into the sheath-shaped back metal guide holding member 4 on the upper surface of the new mortar plate 5 to the inner side, the opposite side pieces 6b, 6b of the U-shaped leaf spring 6 are opposed. The U-shaped leaf spring 6 is inserted into the hanging grooves 4d, 4d of the sheath-shaped holding member 4 in a state where the space between the both side pieces is contracted, and the bent piece 6a of the leaf spring is placed inside the hanging groove 4d. A new trowel plate can be attached by fitting the small metal into the small groove 4g and fixing the back metal 1 to the sheath-shaped back metal guide holding member 4 by the elastic force (elastic pressure) of the U-shaped plate spring 6.

In these embodiments, the back metal 1 to which the handle 3 is attached is inserted into a sheath-shaped back metal guide holding member 4 such as a back metal receiving box fixed to the surface of the trowel plate 5, and a permanent magnet or The back metal 1 is held by the back metal pressure contact member 6 such as a U-shaped spring.
It was fixed by press-fitting to, but the insertion method is reversed, that is, the back with a narrow cross section and a predetermined length with the sheath-shaped back metal with the handle attached to the upper surface and the lower opening attached to the surface of the mortarboard. A back metal guide holding member fixed to the iron plate is inserted into the back metal so as to cover the guide metal holding member, and the back metal is held by a predetermined back metal guide holding member, such as a leaf spring or a permanent magnet. It may be possible to perform the pressure contact fixing with any of the back metal pressure contact members, and various modifications can be made without departing from the scope of the present invention.

[0027]

According to the plastering iron of the present invention as set forth in claim 1, when a plastering iron that has been worn by the plastering iron and is replaced by a new ironing blade for a handle that is familiar to the user, the conventional ironing iron is used. In the plate-exchange type plastering iron, since the mortar plate is attached by screwing, the screw groove was often clogged with cement or mortar and the screwdriver could not be used. In addition to eliminating the problem, the trowel plate can be easily replaced and firmly attached for use without using any tools.

According to the second aspect of the present invention, the back metal having the handle attached thereto can be easily accommodated at a fixed position in the sheath-shaped back metal receiving box which is the back metal guide holding member on the surface of the trowel plate. it can.

According to the third aspect of the present invention, when the back metal having the handle attached thereto is inserted into the sheath-shaped back metal receiving box on the surface of the mortarboard, the back metal is received by using a permanent magnet. In addition, it can be easily pressed and fixed, and can be easily detached from the back metal receiving box.

According to the fourth aspect of the present invention, it is possible to provide a plastering iron having a simple structure in which the back metal having the handle attached thereto is detachably accommodated and fixed in the back metal guide holding member on the surface of the iron plate. it can.

According to the fifth aspect of the present invention, the structure in which the back metal of the plastering iron having the simple structure described above is detachably pressure-contacted to the back metal guide holding member can be made extremely simple by using a leaf spring. it can.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a plastering iron of the present invention,

FIG. 2 is an exploded perspective view of the plastering iron shown in FIG.

FIG. 3 is a schematic diagram when the back metal of the plastering iron of FIG. 1 is pressed against a back metal receiving box by a permanent magnet and fixed by a stopper.

FIG. 4 is a perspective view showing a hitter on the front end of the back money receiving box;

FIG. 5 is an end view of a back money receiving box showing another example of the winning money,

FIG. 6 is a side view showing mounting of a back metal in a second embodiment which is a modification of the embodiment of FIG.

FIG. 7 is a perspective view showing a third embodiment of the plastering iron of the present invention,

8 is an exploded perspective view of the plastering iron of FIG.

9 is a schematic diagram when the U-shaped leaf spring in the plaster of FIG. 7 is inserted into the hanging groove and the back metal 1 is pressed.

[Explanation of symbols]

1 ... back metal, 1a ... stop groove, 2 ... pillar base, 3 ... handle, 4
… Back metal guide holding member (back metal receiving box), 4a… Hanging groove, 4b
… Entrance, 4d… Latching groove, 4g… Small groove, 4f… Sidewall,
5 ... trowel plate, 6 ... back metal pressure welding member (permanent magnet, U-shaped plate spring), 6a ... bent piece, 7 ... stopper plug.

Claims (5)

[Claims] Claims: 1. A back metal 1 having a predetermined elongated shape and having a handle attached to its surface via a column base 2, and a back metal 1 slidably guided in parallel with the surface of a trowel board. And a back metal pressing member 6 for press-contacting the back metal 1 with the back metal guide holding member 4, and a back metal guide pressing member 6 for pressing the back metal 1 to the back metal guide holding member 4. 1. The plastering iron is characterized in that 1 is positioned at a predetermined position with respect to the back metal guide holding member 4. 2. The back metal 1 has a U-shaped cross section, while the back metal guide holding member 4 accommodates the back metal 1 so as to closely surround the back metal 1 and the upper part thereof is the column base 2. Are formed to have predetermined lengths in a sheath-shaped back metal receiving box provided with a contact metal 4b at an end thereof, which is openable at a predetermined interval so that the front end of the housed back metal 1 abuts. The plasterer described in item 1. 3. The back-bar press-contact member 6 is a permanent magnet that can be mounted on the inner lower surface of the back bar 1 having a U-shaped cross section.
The stop groove 1a formed on the upper surface of the back metal 1 in a state where the back metal 1 is housed in the back metal receiving box 4 and the front end of the back metal 1 is in contact with the contact metal 4b at the end of the back metal receiving box 4. And a stopper 7 which can be attracted to the permanent magnet for fitting in common with a pair of hanging grooves 4a, 4a formed on the upper edge of the back metal box 4 corresponding to the groove 1a. The plastering iron according to claim 2, wherein the plastering iron is provided so as to project from the side surface of the receiving box 4. 4. The back metal 1 has the shape of a roof-shaped portion having a trapezoidal cross section, and the outer surface is formed to have a predetermined taper length such that the width and height gradually decrease in the longitudinal direction. The back metal guide holding member 4 has a transverse cross section formed in a sheath-like shape with an open top so as to accommodate the back metal 1, and the outer peripheral surface of the back metal 1 is the sheath-shaped inner surface of the guide holding member 4. The width and height are gradually reduced so that the end portion of the back metal 1 on the narrowed side in the longitudinal direction in close contact with the corresponding end portion of the guide holding member 4 is gradually reduced to a predetermined length. Back metal guide holding member 4
The plastering iron according to claim 1, wherein the back portion of the back metal 1 which is housed in a close contact with the back metal is pressed by the back metal pressure contact member 6. 5. The back-bar press-contacting member 6 is press-contacted with hooking grooves 4d, 4d having a predetermined width, which are respectively formed at rear ends of side walls 4f, 4f of the back-bar guide holding member 4 which are inclined opposite to each other. When the member 6 is inserted, a small-width bending piece 6a formed on one side of the opposite U-shaped opposite side pieces is fitted into a small groove 4g formed in a hook shape at the rear of the bottom of the hanging groove 4d. The guide holding member 4
Is formed so that the end portion of the back-bar press-contact member 6 projects from the side wall 4f of the back-bar, and the back portion of the back-bar 1 that is housed in the guide holding member 4 is inserted into the hanging grooves 4d, 4d in a U-shaped compressed state. The plastering iron according to claim 4, which is a U-shaped leaf spring adapted to be pressed.