Plastering trowel heating device

Abstract

To provide a plastering trowel heating device capable of safely and efficiently heating a trowel part of a plastering trowel without connecting an electric cord or filling fuel gas.SOLUTION: A plastering trowel heating device has a heat source space accommodating a heat source, a heating space adjacent to the heat source space, a heat shielding plate forming an upper surface of the heating space, and an inlet plate forming one side surface of the heating space, in which the inlet plate is provided with an iron part insertion port, the heat shielding plate is provided with a support guide port, and the support guide port is continuous with the trowel part insertion port.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a plastering trowel heating device for heating a plastering trowel used for spreading paving materials. [Background technology]

[0002] Plastering trowels used for spreading resin-based paving materials are sometimes heated to make spreading the material easier. For this reason, various proposals have been made to heat the trowel part of plastering trowels.

[0003] For example, Patent Document 1 discloses an electric trowel that has an electric heating element disposed on the top surface of the trowel and heats the trowel by passing electricity through the electric heating element. However, this electric trowel requires an electric cord to be connected to supply power to the electric heating element. If an electric cord is connected to a plastering trowel, it can get in the way during plastering work, which can be inconvenient as it reduces the efficiency of the leveling work.

[0004] Meanwhile, Patent Documents 2 and 3 disclose heating trowels equipped with a gas burner mechanism that heats the trowel portion with combustion gas. These heating trowels provide the plastering trowel itself with a fuel source for heating, eliminating the need for an electrical cord, which impairs workability. However, according to the findings of the inventors, the handle of a plastering trowel, which is used as a fuel gas cylinder, has a small volume and is limited in the amount of fuel gas that can be filled. This has the disadvantage of frequently running out of fuel gas during work, requiring the user to refill the fuel gas each time.

[0005] Of course, if you just want to heat the trowel part of a plastering trowel, you could consider heating it with a gas burner or placing the trowel on a gas stove. However, these methods are inefficient because the heat easily escapes to the surrounding area. Furthermore, directly heating the trowel part with a gas burner is dangerous because it could heat parts other than the trowel part or the surrounding area. Furthermore, if you heat the plastering trowel on a gas stove, there is a risk that the handle, if made of wood, will burn. If you try to avoid this by leaning the plastering trowel at an angle against the gas stove, the plastering trowel may tip over during heating, which is dangerous. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Utility Model Application Publication No. 3-99145 [Patent Document 2] Utility Model Registration No. 3002899 [Patent Document 3] Japanese Patent Application Publication No. 11-323819 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made to eliminate the drawbacks of the prior art described above, and has as its object to provide a plastering trowel heating device that does not require connecting an electric cord or filling fuel gas, and that can heat the trowel part of a plastering trowel safely and efficiently. [Means for solving the problem]

[0008] As a result of extensive research and efforts to solve the above problems, the inventors came up with the idea that even if the plastering trowel itself does not have a heating function, if there is a separate, easy-to-use, small, and safe heating device, the plastering trowel can be heated with the heating device when needed, and workability equivalent to or even better than when the plastering trowel itself has a heat-generating function can be achieved without changing the plastering trowel itself.

[0009] After much trial and error based on this idea, the inventors discovered that by arranging a heating space that houses the trowel part of a plastering trowel and a heat source space in which a heat source is placed close together in this order in the vertical direction, and by providing a heat shielding plate that covers the upper surface of the heating space, a heating device can be obtained that can safely and efficiently heat only the trowel part of a plastering trowel.

[0010] That is, the present invention is A plastering trowel heating device for heating a plastering trowel having a trowel portion and a handle portion connected by a support, a heat source space that accommodates a heat source; a heating space located above the heat source space and adjacent to the heat source space; a heat shield plate that forms the upper surface of the heating space; an inlet plate forming one side of the heating space; and The entrance plate is provided with a trowel insertion port that penetrates the entrance plate in its plate thickness direction, the opening width in the vertical direction being larger than the thickness of the trowel part of the plastering trowel to be targeted, and the opening width in the horizontal direction being larger than the width of the trowel part of the plastering trowel to be targeted, The heat shielding plate is provided with a support guide opening that penetrates the heat shielding plate in its plate thickness direction, has an opening width that is larger than the width in the left-right direction of the support of the target plastering trowel, has one end that opens at the side end of the heat shielding plate on the entrance plate side, and has the other end that extends toward the center of the heat shielding plate along the insertion direction of the trowel part that is inserted from the trowel part insertion opening, The above problem is solved by providing a plastering trowel heating device in which the support guide opening is continuous with the trowel part insertion opening.

[0011] As described above, in the plastering trowel heating device of the present invention, the heating space into which the trowel part of the plastering trowel is inserted during heating and the heat source space that houses the heat source are arranged close to each other in this order from top to bottom, so that heat from the heat source space can be efficiently transferred to the trowel part located in the heating space to heat the trowel part.

[0012] The heat shield plate, which forms the top surface of the heating space, and the entrance plate, which forms one side of the heating space, are provided with a support guide opening and a trowel insertion opening that are continuous with each other. Therefore, during heating, the trowel can be inserted into the heating space through the trowel insertion opening in the entrance plate while keeping the handle of the plastering trowel positioned above the heat shield plate. Therefore, while heat from the heat source space heats the trowel located within the heating space, it is prevented from heating the handle located above the heat shield plate, preventing the handle from becoming excessively hot, scorching, or burning. The support guide opening in the heat shield plate and the trowel insertion opening in the entrance plate may be directly connected, or they may be indirectly connected via other guide openings in the heat shield plate and / or other insertion openings in the entrance plate.

[0013] In a preferred embodiment, a partition member that does not impede heat transfer from the heat source space to the heating space is disposed between the heat source space and the heating space. The presence of such a partition member is advantageous because it prevents direct contact between the heat source housed in the heat source space and the soldering iron inserted into the heating space, preventing the soldering iron or a portion thereof from being overheated and preventing the heat source from being disturbed or damaged. Furthermore, the presence of the partition member also provides the advantage of stably maintaining the position and orientation of the soldering iron within the heating space.

[0014] In a preferred embodiment, the inlet plate has a support insertion opening that penetrates the inlet plate in the plate thickness direction and has a width in the left-right direction that is larger than the width of the support of the target plastering trowel. One end of this support insertion opening opens at the upper end of the inlet plate and is continuous with the support guide opening, and the other end is continuous with the trowel insertion opening. When such a support insertion opening is provided in the inlet plate, the support guide opening provided in the heat shield plate and the trowel insertion opening provided in the inlet plate are indirectly continuous via the support insertion opening provided in the inlet plate.

[0015] In a preferred embodiment, the plastering trowel heating device according to the present invention has two sets of combinations of the support guide opening, the trowel part insertion opening, and the entrance plate on which the trowel part insertion opening is provided, and these two entrance plates form opposing sides of the heating space with a distance between them of at least twice the length of the plastering trowel in the front-rear direction, The two support post guide ports are arranged opposite to each other and positioned on the same straight line.

[0016] When the plastering trowel heating device has the above-described configuration, the trowel parts of the plastering trowels to be heated can be inserted into the heating space through each of the trowel part insertion openings in the two sets of entrance plates, so that the two plastering trowels can be heated simultaneously with their tips butted together.

[0017] Even in this case, the support guide openings provided in the heat shielding plate may be directly connected to the soldering iron insertion openings provided in the entrance plate, or may be indirectly connected to each other via the support insertion openings provided in each of the two entrance plates.

[0018] In another preferred embodiment, the heat shielding plate in the plastering trowel heating device has two or more support guide openings that are aligned in the same direction and parallel to each other with a distance between them that is equal to or greater than the width of the trowel part of the target plastering trowel.The entrance plate has two or more trowel part insertion openings, each of which is directly or indirectly connected to a corresponding one of the support guide openings.

[0019] When a plastering trowel heating device has the above-mentioned configuration, it can heat multiple plastering trowels lined up horizontally at the same time, making it suitable for large-scale construction sites where multiple workers are working simultaneously using their own plastering trowels.

[0020] In yet another preferred embodiment, the heat shielding plate of the plastering trowel heating device has a plurality of post guide openings arranged in parallel with their orientations alternately reversed and spaced apart by a distance equal to or greater than the width of the trowel in the left-right direction. The plastering trowel heating device has an entrance plate having trowel insertion openings continuous with each of the post guide openings on one side that open in the same direction, and an entrance plate having trowel insertion openings continuous with each of the other post guide openings that open in the same direction.

[0021] When the plastering trowel heating device of the present invention is such a device, it is convenient because one or more plastering trowels can be inserted into the heating space from either side of the plastering trowel heating device and heated, or the heated plastering trowels can be removed.

[0022] In another preferred embodiment, the plastering trowel heating device according to the present invention is a plastering trowel heating device that is used with the inlet plate facing upward. When the inlet plate faces upward, the trowel insertion port provided in the inlet plate also faces upward, allowing the plastering trowel to be inserted into the heating space of the plastering trowel heating device from above and heated in an upright position. Furthermore, since the handle of the plastering trowel is located to the side rather than above the heat source space, inadvertent heating of the handle can be further reduced.

[0023] When the inlet plate is used in an upward position as described above, it is preferable to provide two or more sets of combinations of the support guide opening, the trowel insertion opening, the heat shield plate to which they are attached, and the inlet plate, and to arrange these support guide openings and heat shield plates around the heat source space with their respective heat shield plates facing outward. In this case, since the heat source space is surrounded by the heating space, the heat from the heat source space can be used to heat the plastering trowel without waste.

[0024] The plastering trowel targeted by the plastering trowel heating device of the present invention is typically a plastering trowel in which the trowel head and the handle are connected by a support, more specifically, a plastering trowel in which the trowel head and the handle are connected by a support attached perpendicular to the trowel head. The type of plastering trowel is not important. It may be a rough coating trowel, a middle coating trowel, or a finishing trowel. However, since it is heated before use, it is desirable that the trowel head be made of a metal such as iron. The plastering trowel heating device of the present invention is most effective when used to heat such plastering trowels. However, the objects that can be safely heated using the plastering trowel heating device of the present invention are not limited to the trowel head of a plastering trowel. Even if a metal blade is attached to a wooden or plastic handle, such as a starter, the plastering trowel heating device of the present invention can safely heat only the blade portion.

[0025] Figure 18 shows an example of a plastering trowel to be heated by the plastering trowel heating device of the present invention. In Figure 18, reference numeral 100 denotes the plastering trowel, 101 denotes its trowel part, 102 denotes the handle part, and 103 denotes the support. In the figure, e denotes the length from the tip to the end of trowel part 101, h denotes the width of trowel part 101 in the left-right direction, and t denotes the thickness of trowel part 101 in the up-down direction. Note that if there are mounting members such as flanges for attaching support 103 to trowel part 101, these mounting members are also referred to as the trowel part. [Effects of the Invention]

[0026] According to the plastering trowel heating device of the present invention, the trowel part of the plastering trowel can be heated at any time by inserting the trowel part into the heating space. Furthermore, if the plastering trowel heating device of the present invention can heat multiple plastering trowels simultaneously, by heating one or more plastering trowels while using one, the heated plastering trowels can be used continuously without interruption, which has the advantage of being able to improve work efficiency. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a front perspective view showing an example of a plastering trowel heating device according to the present invention. [Figure 2] FIG. 2 is a vertical cross-sectional view taken along line XX of FIG. 1. [Figure 3] FIG. 2 is a plan view showing only the heat shield plate. [Figure 4] FIG. [Figure 5] 10 is a right side view of the plastering trowel heating device showing the state in which the plastering trowel is inserted into the heating space through the trowel part insertion port. FIG. [Figure 6] 3 is a vertical cross-sectional view of a plastering trowel heating device showing a state in which the trowel portion of the plastering trowel is inserted into a heating space. FIG. [Figure 7] 10A and 10B are a right side view and a partially enlarged view showing another example of a plastering trowel heating device according to the present invention. [Figure 8] FIG. 4 is a right side view showing another example of a plastering trowel heating device according to the present invention. [Figure 9] FIG. 10 is a perspective view showing yet another example of a plastering trowel heating device according to the present invention, viewed obliquely from the upper right direction. [Figure 10] 10 is a perspective view of the plastering trowel heating device of FIG. 9, seen obliquely from the upper left. [Figure 11] FIG. 10 is a vertical cross-sectional view of the plastering trowel heating device shown in FIG. [Figure 12] FIG. 10 is a perspective view showing yet another example of a plastering trowel heating device according to the present invention. [Figure 13] FIG. 10 is a perspective view showing yet another example of a plastering trowel heating device according to the present invention. [Figure 14] FIG. 10 is a perspective view showing yet another example of a plastering trowel heating device according to the present invention. [Figure 15] FIG. 15 is a vertical cross-sectional view of the plastering trowel heating device shown in FIG. [Figure 16] FIG. 10 is a perspective view showing yet another example of a plastering trowel heating device according to the present invention. [Figure 17] FIG. 17 is a vertical cross-sectional view of the plastering trowel heating device shown in FIG. [Figure 18] FIG. 1 is a perspective view showing an example of a plastering trowel. [Figure 19] FIG. 19 is a right side view of the plastering trowel shown in FIG. 18. DETAILED DESCRIPTION OF THE INVENTION

[0028] The present invention will be described below with reference to the drawings, but it goes without saying that the present invention is not limited to those shown in the drawings.

[0029] FIG. 1 is a perspective view showing an example of a plastering trowel heating device according to the present invention. In FIG. 1, reference numeral 1 denotes the plastering trowel heating device according to the present invention. Reference numeral 2 denotes a heat shielding plate that forms the upper surface of a heating space, which will be described later. The heat shielding plate 2 is provided with a support guide opening 3 that penetrates the heat shielding plate 2 in the plate thickness direction. Reference numeral 4 denotes an entrance plate that forms one side of the plastering trowel heating device 1. The entrance plate 4 is provided with a trowel insertion opening 5 that penetrates the entrance plate 4 in the plate thickness direction. As shown in the figure, the support guide opening 3 and the trowel insertion opening 5 are continuous with each other.

[0030] The three sides of the plastering trowel heating device 1 other than the entrance plate 4 are surrounded by side plates 61, 62, and 63, and a bottom plate 7 is attached to the bottom of the plastering trowel heating device 1. However, the side plates 62, 63 and the bottom plate 7 are not shown in Fig. 1. In a preferred embodiment, the heat shielding plate 2 is connected to the side plate 61, 62, or 63 by a hinge, and functions as a lid that can be opened and closed freely.

[0031] Reference numerals 81, 82, 83, and 84 denote legs of the plastering trowel heating device 1. Because legs 81, 82, 83, and 84 are provided, there is a distance between the bottom plate 7 of the plastering trowel heating device 1 and the ground or floor, which prevents heat from the heat source space (described later) from being directly transferred to the ground or floor and dissipated. However, legs 81, 82, 83, and 84 are not essential and do not have to be provided.

[0032] It is desirable that each component constituting the plastering trowel heating device 1, including the heat shielding plate 2, be made of a heat-resistant, non-flammable material, such as metals such as iron, copper, brass, and aluminum, or ceramics.

[0033] FIG. 2 is a vertical cross-sectional view of the plastering trowel heating device 1 shown in FIG. 1 , taken along the XX plane passing through the center of the support guide opening 3 in the width direction. Note that legs 82 and 83 are not shown. As shown in FIG. 2 , the plastering trowel heating device 1 includes a heat source space α and a heating space β, which are adjacent to each other and vertically stacked, with the heat source space α located at the bottom and the heating space β located at the top. The heat source space α accommodates a suitable heat source, such as charcoal, bamboo charcoal, briquettes, coal, coke, or wood chips, or an electric heater or gas burner. If the heat source requires a continuous supply of energy to sustain heat generation, an appropriate energy source, such as a power source or gas cylinder, can be placed outside the plastering trowel heating device 1 and energy can be supplied to the heat source in the heat source space α from the outside. This allows the plastering trowel heating device 1 to be kept compact.

[0034] A heat shielding plate 2 with a support guide port 3 is provided above the heating space β. The heat shielding plate 2 forms the upper surface of the heating space β. An entrance plate 4 is provided on one side of the heating space β, forming one side of the heating space β. In this example, the entrance plate 4 covers not only the side of the heating space β but also the side of the heat source space α, and is connected to the bottom plate 7 at its lower end, forming one side of both the heating space β and the heat source space α. However, the entrance plate 4 that forms one side of the heating space β and the side plate that forms one side of the heat source space α may be configured separately. In that case, the heat source space α will have a side plate that forms one side of it, different from the entrance plate 4.

[0035] A trowel insertion port 5 is provided on the entrance plate 4 at a position corresponding to the side of the heating space β. The heating space β is connected to the outside of the plastering trowel heating device 1 via the trowel insertion port 5. The trowel can be inserted into the heating space β by moving the plastering trowel horizontally from the trowel insertion port 5 in the direction indicated by arrow A. The trowel insertion port 5 is connected to the support guide port 3 provided in the heat shield plate 2. Therefore, when the trowel is inserted into the heating space β through the trowel insertion port 5, the support of the plastering trowel can move along the support guide port 3 toward the center of the heat shield plate 2 without coming into contact with the heat shield plate 2. Therefore, the presence of the support does not interfere with the insertion of the trowel into the heating space β. The trowel inserted into the heating space β is heated by heat from the heat source space α located below.

[0036] In FIG. 2, the reference numeral 9 denotes a partition member. The partition member 9 is disposed between the heat source space α and the heating space β. The partition member 9 is composed of a member that does not impede the transfer of heat from the heat source space α to the heating space β, such as a metal or ceramic mesh or lattice member. The partition member 9 is preferably large enough to cover the entire upper surface of the heat source space α. By providing the partition member 9 between the heat source space α and the heating space β, direct contact between the heat source accommodated in the heat source space α and the trowel portion of the plastering trowel inserted into the heating space β is avoided, preventing the heat source from being disturbed, displaced, or damaged by the inserted trowel portion. Furthermore, the distance between the inserted trowel portion and the heat source is maintained uniform regardless of the trowel portion's position within the heating space β, preventing overheating of only a portion of the trowel portion.

[0037] The vertical position of the partition member 9 is arbitrary as long as it is below the lower end of the trowel insertion port 5 provided in the entrance plate 4 and does not prevent the trowel from being inserted into the heating space β through the trowel insertion port 5. In a preferred embodiment, the partition member 9 is placed at a position such that the vertical distance from the upper surface of the partition member 9 to the upper surface of the heat shield plate 2 is shorter than the distance from the lower surface of the trowel part to the lower surface of the handle part of the target plastering trowel, which will be described later.

[0038] In a preferred embodiment, the partition member 9 is detachably attached to the plastering trowel heating device 1. For example, the entrance plate 4 and the side plates 61, 62, and 63 may have inwardly protruding projections at appropriate positions, and the ends of the partition member 9 may be engaged with these projections to detachably attach the partition member 9 to a desired position within the plastering trowel heating device 1. Alternatively, recesses may be provided instead of the projections, and the ends of the partition member 9 may be fitted into these recesses to detachably attach the partition member 9 to a desired position. Multiple sets of these projections or recesses may be provided at different vertical positions on the inside of the entrance plate 4 and the side plates 61, 62, and 63, allowing the placement of the partition member 9 to be changed. The partition member 9 is not essential, and it is of course possible to directly adjoin the heating space β to the heat source space α without the partition member 9.

[0039] The partition member 9 can be removed from the plastering trowel heating device 1 or attached to the plastering trowel heating device 1 by rotating the heat shielding plate 2, which functions as a lid, relative to one of the side plates 61, 62, and 63 as described above to open the top surface of the heating space β, or by removing the heat shielding plate 2 from the plastering trowel heating device 1. The same applies when placing a heat source in the heat source space α or when removing the heat source from the heat source space α.

[0040] FIG. 3 is a plan view showing only the heat shielding plate 2. As described above, the heat shielding plate 2 is provided with a support post guide opening 3 that penetrates the heat shielding plate 2 in the plate thickness direction. 3a denotes the opening of the support post guide opening 3, and 3b denotes the tip of the support post guide opening 3. As shown in FIG. 3, the opening 3a of the support post guide opening 3 opens at the side end of the heat shielding plate 2 that is located on the inlet plate 4 side. The support post guide opening 3 extends from the opening 3a to the tip 3b toward the center of the heat shielding plate 2 along the insertion direction of the soldering iron indicated by arrow A. The insertion direction of the soldering iron indicated by arrow A is usually perpendicular to the inlet plate 4, so the support post guide opening 3 is also perpendicular to the inlet plate 4.

[0041] 3, the symbol D denotes the opening width of the support guide opening 3, which is also the opening width of the opening 3a. The opening width D of the support guide opening 3 is set to be larger than the width of the support of the target plastering trowel in the left-right direction.

[0042] FIG. 19 is a right side view of the plastering trowel 100 shown in FIG. 18 , viewed from the end. In the figure, XY indicates the left-right direction, and ZZ indicates the up-down direction. In FIG. 19 , the symbol d indicates the left-right width of the support 103. In the plastering trowel heating device 1 according to the present invention, the opening width D of the support guide port 3 is greater than the left-right width d of the support 103 of the plastering trowel 100, so that the relationship D>d is satisfied. When the relationship D>d is satisfied, the support 103 can be inserted from the opening 3a of the support guide port 3 toward the tip 3b while standing perpendicular to the heat shield plate 2. In a preferred embodiment, the opening width D of the support guide port 3 is constant from the opening 3a to the tip 3b. However, the opening width D of the support guide port 3 may vary from the opening 3a to the tip 3b, provided that the relationship D>d is satisfied.

[0043] In FIG. 3, the symbol E indicates the length of the support guide opening 3, which is the length from the opening 3a to the tip 3b. The length E of the support guide opening 3 limits the distance the support of the plastering trowel can be moved in the direction indicated by arrow A from the opening 3a of the support guide opening 3. As shown in FIG. 18, the support of the plastering trowel is usually located rearward of the midpoint of the trowel head 101 in the front-to-rear direction. Therefore, if the length E of the support guide opening 3 is at least half the length e of the trowel head 101 in the front-to-rear direction, the entire length of the trowel head 101 of the plastering trowel 100 can be inserted into the heating space β. Therefore, the length E of the support guide opening 3 should be set to a size that satisfies the relationship E ≥ (1 / 2)e, where e is the length e of the trowel head of the target plastering trowel in the front-to-rear direction.

[0044] Figure 4 is a right side view of the plastering trowel heating device 1 shown in Figure 1. However, legs 81 and 82 are not shown. H is the left-right opening width of the trowel part insertion opening 5. The left-right opening width H of the trowel part insertion opening 5 is set larger than the left-right width of the trowel part 101, indicated by the symbol h in Figures 18 and 19. In Figure 4, T is the vertical opening width of the trowel part insertion opening 5, and the vertical opening width T of the trowel part insertion opening 5 is set larger than the vertical thickness of the trowel part, indicated by the symbol t in Figures 18 and 19.

[0045] 5 is a right side view showing the state in which the plastering trowel 100 shown in FIGS. 18 and 19 has been inserted into the heating space β through the trowel part insertion opening 5 provided in the entrance plate 4. As in FIG. 4, the legs 81 and 82 are not shown. As can be seen in FIG. 5, the left-right opening width H of the trowel part insertion opening 5 is larger than the left-right width h of the trowel part 101 of the plastering trowel 100, and the up-down opening width T of the trowel part insertion opening 5 is larger than the up-down thickness t of the trowel part 101. Therefore, the trowel part 101 of the plastering trowel 100 can be inserted into the heating space β through the trowel part insertion opening 5 while remaining horizontal. In addition, at this time, the opening width D of the support guide opening 3 provided in the heat shielding plate 2 is set larger than the width d of the support 103 of the plastering trowel 100 in the left-right direction, so the support 103 can move along the support guide opening 3 while remaining upright to the center of the heat shielding plate 2. Because the support guide opening 3 is provided, the support 103 does not interfere with the insertion of the trowel part 101 deep into the heating space β.

[0046] FIG. 6 is a vertical cross-sectional view showing the trowel head 101 of the plastering trowel inserted into the heating space β of the plastering trowel heating device 1. As in FIG. 2, legs 82 and 83 are not shown. As shown in the figure, the entire trowel head 101 of the plastering trowel 100 can be positioned within the heating space β by inserting the trowel head 101 into the heating space β through the trowel head insertion port 5 and advancing the support 103 along the support guide port 3 to the center of the heat shield plate 2. Because a partition member 9 is provided between the heating space β and the heat source space α, the plastering trowel 100 is stably held within the heating space β with the lower surface of the trowel head 101 in contact with the upper surface of the partition member 9.

[0047] Furthermore, the distance n from the upper surface of the partition member 9 to the upper surface of the heat shielding plate 2 is set to be smaller than the distance m from the lower surface of the iron part 101 to the lower surface of the handle part 102. Therefore, even when the iron part 101 is located at the lowest position within the heating space β, that is, when the iron part 101 is located at a position where its lower surface contacts the upper surface of the partition member 9, as shown in the figure, a distance (mn) is maintained between the lower surface of the handle part 102 and the upper surface of the heat shielding plate 2, and the handle part 102 can be positioned higher than the heat shielding plate 2. This makes it possible to prevent the handle part 102 from coming into direct contact with the upper surface of the heat shielding plate 2.

[0048] When the heat source (not shown) housed in the heat source space α is activated in the state shown in FIG. 6 , the trowel portion 101 located within the heating space β is heated. Because the upper surface of the heating space β is covered with the heat shield plate 2, except for the support guide opening 3, the heat generated by the trowel portion 101 is significantly prevented from inadvertently heating the handle portion 102 located above the heat shield plate 2. Furthermore, the plastering trowel 100 to be heated is stably held with the trowel portion 101 inserted within the heating space β, preventing the plastering trowel 100 from tipping over during heating, ensuring extremely safe heating. Furthermore, if a blade with a blade attached to the handle, such as a cutting edge, is to be heated instead of the plastering trowel 100, the cutting edge can be inserted into the heating space β through the trowel portion insertion opening 5. The cutting edge, with its blade portion inserted within the heating space β, is held stable during heating, allowing only the cutting edge to be safely heated. This also applies to the modified example of the present invention described later.

[0049] FIG. 7 is a right side view showing another example of a plastering trowel heating device according to the present invention. FIG. 7(b) is a partially enlarged view of FIG. 7(a). As in FIG. 4, legs 81 and 82 are omitted from the illustration. As shown in FIG. 7, in this example, inlet plate 4 has, in addition to trowel insertion port 5, a support insertion port 10, which is an opening penetrating the inlet plate 4 in its thickness direction. The upper end of support insertion port 10 opens at the upper edge of inlet plate 4 and is continuous with support guide port 3 provided in heat shield plate 2. Meanwhile, the lower end of support insertion port 10 is continuous with trowel insertion port 5, as shown. Thus, in the plastering trowel heating device 1 of this example, trowel insertion port 5 provided in inlet plate 4 is not directly continuous with support guide port 3 provided in heat shield plate 2, but is indirectly continuous with support guide port 3 via support insertion port 10.

[0050] In the figure, G is the opening width in the left-right direction of the support insertion port 10. The opening width G of the support insertion port 10 is larger than the left-right width d of the support 103 of the plastering trowel, similar to the opening width D of the support guide port 3 provided in the heat shielding plate 2. In the figure, F is the opening width in the up-down direction of the support insertion port 10. There is no particular limit to the opening width F in the up-down direction of the support insertion port 10, as long as the plastering trowel 100 can be inserted into the heating space β through the trowel part insertion port 5 and the support insertion port 10.

[0051] Fig. 8 is a right side view showing yet another example of a plastering trowel heating device 1 according to the present invention. As in Fig. 4, legs 81 and 82 are not shown. In the example shown in Fig. 8, the left-right width of the trowel insertion opening 5 provided in the entrance plate 4 extends to the full left-right width of the entrance plate 4, and the left-right opening width H of the trowel insertion opening 5 is equal to the left-right width of the entrance plate 4. In this way, in the plastering trowel heating device 1 according to the present invention, the trowel insertion opening 5 that penetrates the entrance plate 4 in the plate thickness direction may be formed with a width equal to the left-right width of the entrance plate 4.

[0052] Fig. 9 is a perspective view showing yet another preferred example of the plastering trowel heating device 1 according to the present invention, as viewed obliquely from the upper right. Fig. 10 is a perspective view of the same plastering trowel heating device 1 as viewed obliquely from the upper left.

[0053] 9 and 10, in the plastering trowel heating device 1 of this example, two entrance plates 41 and 42 each form one opposing side of the heating space β, constituting the right and left sides of the plastering trowel heating device 1. Trowel insertion openings 51 and 52 are provided in the entrance plates 41 and 42, respectively. Note that the entrance plates 41 and 42 are preferably spaced apart from each other at a distance at least twice the length of the target plastering trowel in the front-to-rear direction (the length indicated by symbol e in FIG. 18).

[0054] On the other hand, the heat shielding plate 2 has two support guide openings 31 and 32 facing opposite to each other, and the support guide openings 31 and 32 open to the entrance plates 41 and 42, respectively, and are continuous with the soldering iron insertion openings 51 and 52.

[0055] In this way, the plastering trowel heating device 1 in this example has two sets of combinations of a support guide opening 3, a trowel insertion opening 5, and an entrance plate 4 in which the trowel insertion opening 5 is provided, and these form opposing sides of the heating space β, with the two entrance plates 4 spaced apart by a distance at least twice the length of the plastering trowel in the front-to-back direction, and the two support guide openings 3 are arranged opposite each other so that they are located on the same straight line, facing opposite each other.

[0056] The plastering trowel heating device 1 of this example is the same as the plastering trowel heating device 1 described above in that it is provided with a heat source space α and a heating space β, as well as a partition member 9 therein, and is also provided with a heat shielding plate 2 that forms the upper surface of the heating space β. The heat shielding plate 2 is also the same as the plastering trowel heating device 1 described above in that it is rotatably or detachably attached to the side plate 61 or the side plate 62 opposite the side plate 61, and functions as a lid that can be opened, closed, or removed. The front end and / or the back end of the heat shielding plate 2 may be bent downward at a right angle, respectively, to form part of the side plate 61 and / or the side plate 62.

[0057] 11 is a vertical cross-sectional view of the plastering trowel heating device 1 shown in FIGS. 9 and 10, taken vertically along a line passing through the widthwise centers of the two support guide openings 31 and 32. As shown in FIG. 11, the trowel portions 101 of the plastering trowels 100 can be inserted into the heating space β of the plastering trowel heating device 1 of this example in the direction indicated by arrow A from the trowel portion insertion opening 51 provided in the entrance plate 41 and the trowel portion insertion opening 52 provided in the entrance plate 42. Therefore, with the plastering trowel heating device 1 of this example, the trowel portions 101 of the two plastering trowels 100 inserted into the heating space β can be simultaneously heated by heat from the heat source housed in the heat source space α.

[0058] The heat source space α and heating space β within the plastering trowel heating device 1 may be separated into two spaces, one on the entrance plate 41 side and the other on the entrance plate 42 side, by a partition plate indicated by the symbol 11, or they may be configured as a single heat source space α and heating space β that are continuous from the entrance plate 41 to the entrance plate 42 without the partition plate 11 being provided.

[0059] 9 to 11, the soldering iron insertion openings 51 and 52 are directly connected to the support guide openings 31 and 32, respectively, but it is also possible to provide a support insertion opening 101 or 102 (not shown) in the entrance plate 41 and / or 42, so that the soldering iron insertion openings 51 and / or 52 are indirectly connected to the support guide openings 31 and 32, respectively, via the support insertion openings 101 or 102, respectively.

[0060] 9 to 11 can be obtained by combining two plastering trowel heating devices 1 shown in Fig. 1 back to back, that is, by butting the side plates 63 together. In this case, the side plates 63 of one or both of the two plastering trowel heating devices 1 to be combined may be removed before combining, or may be left in place when combined.

[0061] 12 is a perspective view showing yet another example of a plastering trowel heating device 1 according to the present invention. In the plastering trowel heating device 1 of this example, three support guide openings 31, 32, and 33 are provided in the heat shielding plate 2, oriented in the same direction and parallel to each other, with a distance between them equal to or greater than the width h of the trowel part 101 in the left-right direction. In addition, three trowel part insertion openings 51, 52, and 53 are provided in the entrance plate 4, each of which is connected to a corresponding one of the support guide openings 31, 32, and 33. The rest of the configuration is the same as that of the plastering trowel heating devices described so far.

[0062] According to the plastering trowel heating device 1 of this example, three plastering trowels 100 can be inserted into the heating space β from the same direction, and three trowel parts 101 can be heated simultaneously. In the illustrated example, the number of support guide openings 31, 32, 33 provided in the heat shielding plate 2 and the number of trowel part insertion openings 51, 52, 53 provided in the entrance plate 4 are both three, but the number of support guide openings 3 and trowel part insertion openings 5 ​​is not limited to three and may be two or more, and may of course be four or more.

[0063] The plastering trowel heating device 1 shown in Fig. 12 can be obtained, for example, by combining three plastering trowel heating devices 1 shown in Fig. 1 side by side, i.e., with their side panels in contact with each other. In this case, the side panels of the three plastering trowel heating devices 1 that are to be placed side by side may be removed before combining them, or they may be left in place when combining them.

[0064] FIG. 13 is a perspective view showing yet another example of a plastering trowel heating device 1 according to the present invention. In the plastering trowel heating device 1 of this example, four support guide openings 31, 32, 33, and 34 are provided in a heat shielding plate 2, arranged in parallel with their orientations alternately reversed, and spaced apart by a distance equal to or greater than the width h of the trowel unit 101 in the left-right direction. Furthermore, an entrance plate 41 is provided with two trowel unit insertion openings 52 and 54, each connected to the support guide openings 32 and 34 that open toward the entrance plate 41. Meanwhile, an entrance plate 42, which forms the side opposite the entrance plate 41, is provided with trowel unit insertion openings 51 and 53, each connected to the support guide openings 31 and 33 that open toward the entrance plate 42. The remaining configuration is similar to that of the plastering trowel heating devices described above.

[0065] According to the plastering trowel heating device 1 of this example, two plastering trowels 100 can be inserted into the heating space β from opposite directions, allowing the trowel portions 101 of four plastering trowels 100 to be heated simultaneously. Because there are two trowel portion insertion openings 5 ​​for inserting the trowel portions 101 into the heating space β, one on each side, the plastering trowel heating device 1 can be accessed from both sides of the plastering trowel heating device 1, allowing the trowel portions 101 of the plastering trowels 100 to be heated, which is convenient. In the illustrated example, the number of support guide openings 31, 32, 33, and 34 provided in the heat shielding plate 2 and the number of trowel portion insertion openings 51, 52, 53, and 54 provided in the inlet plates 41 and 42 are all four, but the number of support guide openings 3 and trowel portion insertion openings 5 ​​is not limited to four and may be two or more, and may of course be five or more.

[0066] The plastering trowel heating device 1 shown in Fig. 13 can also be obtained by, for example, combining four of the plastering trowel heating devices 1 shown in Fig. 1 side by side, with their orientations alternately inverted. In this case, the side panels of the four plastering trowel heating devices 1 that are to be placed side by side may be removed before combining them, or they may be left in place when combining them.

[0067] FIG. 14 is a perspective view showing yet another example of a plastering trowel heating device 1 according to the present invention. The plastering trowel heating device 1 of this example is basically identical in configuration to the plastering trowel heating device 1 shown in FIG. 1 , except that the inlet plate 4 is oriented upward rather than sideways. As a result of the inlet plate 4 facing upward, the inlet plate 4 forms the top surface of the heating space β, rather than one side of the heating space β. Furthermore, the heating space β and the heat source space α are not positioned adjacent to each other vertically within the plastering trowel heating device 1, but are positioned adjacent to each other horizontally. The heat shield plate 2 forms the side of the heating space β opposite the heat source space α, rather than the top surface of the heating space β. The heat shield plate 2 functions as a lid, freely openable, detachable, or removable, just as in the examples described above. Also, the support guide opening 3 and the trowel insertion opening 5 may be directly connected or indirectly connected via the support insertion opening 10, just as in the examples described above.

[0068] FIG. 15 is a vertical cross-sectional view of the plastering trowel heating device 1 shown in FIG. 14, with legs 83 and 84 omitted. As shown in FIG. 15, in this example of the plastering trowel heating device 1, the inlet plate 4 faces upward, resulting in the trowel insertion port 5 opening upward. Therefore, the trowel portion 101 of the plastering trowel 100 to be heated is inserted downward into the heating space β. As a result, the tip of the trowel portion 101 abuts against the underside of the heating space β, and the plastering trowel 100 is in an upright position. However, because the partition member 9 is installed between the heating space β and the heat source space α, the swing range of the trowel portion 101 is kept small, allowing the trowel portion 101 to be stably held within the heating space β.

[0069] Furthermore, during heating, most of the heat from the heat source space α flows upward after passing through the partition member 9 to heat the trowel part 101 in the heating space β, so there is little possibility that the handle part 102 located to the side of the trowel part 101, separated by the heat shield plate 2, will be overheated. In the plastering trowel heating device 1 of this example, the trowel part 101 can be heated while the plastering trowel 100 is in an upright position, so the plastering trowel heating device 1 can be made relatively small and compact.

[0070] Fig. 16 is a perspective view showing yet another example of a plastering trowel heating device 1 according to the present invention. The plastering trowel heating device 1 of this example has a structure in which two plastering trowel heating devices 1 shown in Fig. 14 are combined with their bottom plates 7 tightly attached to each other. That is, a first set is a combination of a heat shielding plate 21 having a support guide opening 31 and an entrance plate 41 having a trowel insertion opening 51, and a second set is a combination of a heat shielding plate 22 having a support guide opening 32 and an entrance plate 42 having a trowel insertion opening 52, with the heat shielding plates 21, 22 combined facing outward.

[0071] Since the structure is such that each heat shielding plate 21, 22 is combined facing outward, the support guide port 31 and heat shielding plate 21 that make up the first set, and the support guide port 32 and heat shielding plate 22 that make up the second set are arranged around the heat source spaces α1, α2 with the heat shielding plates 21 and 22 facing outward.

[0072] FIG. 17 is a vertical cross-sectional view of the plastering trowel heating device 1 shown in FIG. 16 . Note that legs 83 and 84 are not shown. As shown in FIG. 17 , in the plastering trowel heating device 1 of this example, a first set consisting of a heat shielding plate 21 with a support guide opening 31 and an entrance plate 41 with a trowel insertion opening 51, and a second set consisting of a heat shielding plate 22 with a support guide opening 32 and an entrance plate 42 with a trowel insertion opening 52, are arranged around the heat source spaces α1 and α2 with the heat shielding plates 21 and 22 facing outward. Because the heat source space α2 is located behind the heat source space α1 and the heat source space α1 is located behind the heat source space α2, the heat generated from the heat sources housed in the heat source spaces α1 and α2 does not escape to the rear but is instead directed entirely toward the heating spaces β1 and β2 located in front, heating the inserted trowel 101. Therefore, the trowel parts 101 inserted into the heating spaces β1 and β2 can be heated with good thermal efficiency. Also, since the trowel parts of multiple plastering trowels can be heated in an upright position, the plastering trowel heating device 1 can be made small and compact.

[0073] When assembling the first set consisting of the heat shielding plate 21 having the support guide opening 31 and the entrance plate 41 having the soldering iron insertion opening 51, and the second set consisting of the heat shielding plate 22 having the support guide opening 32 and the entrance plate 42 having the soldering iron insertion opening 52 with the heat shielding plates 21, 22 facing outward, the respective bottom plates 71, 72 may be left in place or removed.

[0074] Furthermore, the number of sets to be combined is not limited to two. Three, four, five or more sets each consisting of a heat shielding plate 2 with a support guide opening 3 and an inlet plate 4 with a soldering iron insertion opening 5 may be combined with the heat shielding plate 2 facing outward to form a triangular, rectangular, pentagonal, or hexagonal planar shape. However, since combining too many sets will result in an excessively large heat source space α, it is preferable to limit the number of sets to six or less. [Industrial Applicability]

[0075] As explained above, the plastering trowel heating device according to the present invention can heat the trowel parts of one or more plastering trowels efficiently at any time at a construction site, etc. The present invention greatly contributes to improving the efficiency of construction work, and has great industrial applicability. [Explanation of symbols]

[0076] 1 Plastering trowel heating device 2 Heat shield plate 3 Pillar guide entrance 4 Entrance board 5 Soldering iron insertion port 6 Side Panel 7 Bottom plate 8 legs 9 Partition members 10 Support insertion port 11 Partition board 100 Plastering Trowel 101 Iron part 102 Handle 103 Post α Heat source space β heating space

Claims

1. A plastering trowel heating device for heating a plastering trowel having a trowel portion and a handle portion connected by a support, a heat source space that accommodates a heat source; a heating space located above the heat source space and adjacent to the heat source space; a heat shield plate that forms the upper surface of the heating space; an inlet plate forming one side of the heating space; and The entrance plate is provided with a trowel insertion port that penetrates the entrance plate in its plate thickness direction, the opening width in the vertical direction being larger than the thickness of the trowel part of the plastering trowel to be targeted, and the opening width in the horizontal direction being larger than the width of the trowel part of the plastering trowel to be targeted, The heat shielding plate is provided with a support guide opening that penetrates the heat shielding plate in its plate thickness direction, has an opening width that is larger than the width in the left-right direction of the support of the target plastering trowel, has one end that opens at the side end of the heat shielding plate on the entrance plate side, and has the other end that extends toward the center of the heat shielding plate along the insertion direction of the trowel part that is inserted from the trowel part insertion opening, The support guide port is continuous with the soldering iron part insertion port. Plastering trowel heating device.

2. 2. The plastering trowel heating device according to claim 1, further comprising a partition member disposed between the heat source space and the heating space, the partition member not interfering with heat transfer from the heat source space to the heating space.

3. The entrance plate is provided with a support insertion port that penetrates the entrance plate in the plate thickness direction, and has an opening width in the left-right direction that is larger than the left-right width of the support of the target plastering trowel, and one end of the support insertion port opens at the upper end of the entrance plate and is continuous with the support guide port, and the other end is continuous with the trowel part insertion port. The plastering trowel heating device according to claim 1 or 2.

4. The heating space is formed by two sets of combinations of the support guide opening, the trowel insertion opening, and the entrance plate on which the trowel insertion opening is provided, and the two entrance plates are spaced apart by a distance at least twice the length of the target plastering trowel in the front-to-rear direction, forming opposing sides of the heating space; The two support column guide ports are arranged opposite to each other and on the same straight line. The plastering trowel heating device according to claim 1 or 2.

5. The entrance plate is provided with a support insertion port that penetrates the entrance plate in its plate thickness direction, and has an opening width in the left-right direction that is larger than the left-right width of the support of the target plastering trowel, and one end of the support insertion port opens at the upper end of the entrance plate and is continuous with the support guide port, and the other end is continuous with the trowel part insertion port. The plastering trowel heating device according to claim 4.

6. The heat shielding plate has two or more support guide openings that are aligned in the same direction and are parallel to each other with a gap therebetween that is equal to or greater than the width of the soldering iron portion in the left-right direction, The inlet plate is provided with two or more soldering iron part insertion openings, each of which is connected to one of the support post guide openings. The plastering trowel heating device according to claim 1 or 2.

7. The heat shielding plate has a plurality of support guide ports that are arranged in parallel with each other with the opening directions thereof alternately reversed and with a distance therebetween that is equal to or greater than the width of the soldering iron portion in the left-right direction, The inlet plate has the soldering iron part insertion openings provided in one of the plurality of support post guide openings that open in the same direction, and the inlet plate has the soldering iron part insertion openings provided in the other of the support post guide openings that open in the same direction, The plastering trowel heating device according to claim 1 or 2.

8. A plastering trowel heating device according to claim 1 or 2, wherein the plastering trowel heating device is disposed with the inlet plate facing upward.

9. The heat source space is surrounded by a pair of inlet plates, each of which has two or more sets of the support guide opening, the soldering iron part insertion opening, the heat shielding plate on which the support guide opening and the soldering iron part insertion opening are provided, and the support guide opening and the heat shielding plate are arranged around the heat source space with the heat shielding plate facing outward. The plastering trowel heating device according to claim 8.

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