TWI823746B - trowel - Google Patents

Abstract

The invention relates to a trowel, which has: a trowel plate, a long connecting piece provided on the trowel plate, a handle component, and a bonding glue. The circumferential surface of the coupling member is concavely provided with an engaging groove, and the width of the opening of the engaging groove is smaller than the width of its interior, forming a configuration that is wide on the inside and narrow on the outside. The bonding glue is coated between the trowel plate and the coupling part, and has an outer covering part and a meshing part. The outer covering part is arranged between the peripheral surface of the coupling part and the trowel plate to bond the coupling part. And the trowel plate; the engaging portion engages the engaging groove, and its cross-section is also narrow on the outside and wide on the inside. Thereby, the bonding effect between the trowel plate, the bonding piece and the bonding glue can be enhanced.

Description

trowel

The present invention relates to a hand tool used in the construction field. Specifically, it refers to a masonry tool, especially a trowel.

The trowel is a construction tool used by plasterers to smooth cement on walls, floors and other surfaces and perform mud work. Trowels come in many types depending on their intended use, but they all have a trowel plate and a handle. The trowel plate and the handle are connected by a long member. The trowel used for smoothing walls is mostly in the shape of a thin plate.

The trowel plate of a conventional trowel is provided with a plurality of perforations for rivets to rivet the trowel plate to the elongated member. This combination method will make the bottom surface of the trowel plate uneven and affect the construction effect.

In order to solve the shortcomings of the previous technology, the inventor developed and created the new patent number M316295, which allows the trowel plate to be combined with the long member without perforation, so that the bottom surface of the trowel plate remains flat to facilitate smoothing of cement.

The inventor adheres to the spirit of striving for excellence and develops the present invention in order to make the structure of his creation more refined and perfect.

The object of the present invention is to provide a trowel, which has a coupling piece and a trowel plate, which are combined with a soft bonding glue. The purpose of the invention is to improve the bonding between the soft bonding glue, the trowel plate and the coupling piece. Effect.

Another object of the present invention is to provide the above-mentioned trowel to improve the strength and durability of the trowel.

The trowel provided by the invention includes: a trowel; A long connecting piece is provided on the top surface of the trowel plate; A handle component is connected to the combination piece for holding; A bonding glue is applied between the trowel plate and the bonding piece; The circumferential surface of the coupling member is concavely provided with an engaging groove, and the width of the opening of the engaging groove is smaller than the width of its interior, forming a configuration that is wide on the inside and narrow on the outside; The bonding glue has an outer covering part and a meshing part. The outer covering part is arranged between the peripheral surface of the connecting piece and the trowel plate to bond the connecting piece and the trowel plate; the meshing part engages the engaging groove, Its cross-section is narrow on the outside and wide on the inside.

Through the above structural design, the engaging portion of the bonding glue cannot escape from the bite groove, thereby increasing the bonding effect between the bonding glue, the coupling piece and the trowel, and improving the operability of the trowel. Due to the improved bonding between the bonding glue and the bonding piece, the structural strength and durability of the trowel are enhanced, and the service life is extended.

The peripheral surface of the coupling member has two end walls and two side walls; in one embodiment, the engaging groove is provided on the two side walls of the coupling member; the engaging portion of the bonding glue engages the engaging grooves of the two side walls, and/or the Occlusal grooves on the two end walls.

In one embodiment, an adhesive layer is bonded between the bottom surface of the coupling member and the trowel plate.

In one embodiment, the cross-section of the bite groove is in the shape of a dovetail.

In one embodiment, the cross section of the bite groove is T-shaped or circular, and a small diameter portion with a smaller width is formed at the opening.

The present invention provides a trowel whose structure can be used in various trowels for different purposes in mud and water projects, such as a trowel (trowel) for smoothing cement and plaster on walls or floors, or for Trowels are commonly known as trowels used to draw grooves on the mud surface of the wall (formed by troweling of cement and plaster). The trowels disclosed in this manual are only examples and not limitations.

Please refer to Figure 1 and Figure 2, which is a trowel 10 provided by the first preferred embodiment of the present invention. It includes: a trowel plate 20, a long connecting member 30, a soft binding glue 40 and a handle. Handle assembly 50. After the trowel plate 20 and the coupling part 30 are combined, the soft bonding glue (hereinafter referred to as bonding glue) 40 is applied between the trowel plate and the coupling part.

The trowel plate 20 is preferably a steel sheet, which is a complete thin plate or steel sheet without any perforations. The length formed by the front and rear ends of the trowel plate 20 is greater than the width of its two sides. Therefore, its longitudinal length is greater than its transverse length.

The coupling member 30 is a rectangular flat elongated body and does not need to be provided with any holes. In this embodiment, only a number of screw holes 32 are provided on the top surface of the coupling member for coupling with the handle assembly 50 . The coupling member 30 is placed on the top surface of the trowel plate 20 along the longitudinal direction of the trowel plate 20 .

Before applying the bonding glue 40, an adhesive layer 35, such as double-sided tape, is used to bond and position the bottom surface of the bonding member 30 and the trowel plate 20.

The handle assembly 50 has a handle 52 and a plurality of pillars 54, such as two pillars. Two screws 56 are passed through the holes 521 and 541 of the handle 52 and the two pillars 54, as shown in Figures 3 and 4, and are screwed to the screw holes 32 of the coupling member 30, so that the bottom end of the handle assembly 50 Combined with the connecting piece 30. The handle 52 and the coupling member 30 can also be connected by a pillar. The connection method or structure of the handle assembly 50 and the coupling member 30 is not the main subject of the present invention and will not be described in detail.

The circumferential surface of the coupling member 30 is further concavely provided with an engaging groove 36. The width of the opening of the engaging groove 36 is smaller than the internal width thereof, so that the engaging groove forms a configuration that is wide on the inside and narrow on the outside.

Specifically, the circumferential surface of the coupling member 30 has two end walls 33 (including the front end wall and the rear end wall) located at its two ends, and two side walls 34 (including the left side wall and the right side wall) located at its two sides. , in this preferred embodiment, the engaging groove 36 is provided around the entire circumference of the coupling member, including the two side walls 34 and the two end walls 33 . Please refer to FIGS. 3 and 4 . In this embodiment, the engaging groove 36 is dovetail-shaped, and the width of the opening 361 is smaller than the width of the interior.

The bonding glue 40 is coated around the coupling part 30 and between the top surface of the trowel plate 20, as shown in Figures 1, 3 and 4; the bonding glue 40 is specially formulated in this preferred embodiment. Silicone has strong adhesion, good physical properties, long service life, and can withstand climate and various environmental conditions for a long time. The bonding glue (silicone glue) 40 is applied in a liquid state between the peripheral surface of the coupling member 30 and the top surface of the trowel plate 20 , and flows into and fills the bite groove 36 . The bonding glue 40 covers the bite groove. After the bonding glue 40 is finalized, tie An outer covering portion 42 and a meshing portion 44 are formed, as shown in Figure 4 . The outer covering portion 42 is arranged between the peripheral surface of the coupling member 30 and the top surface of the trowel plate 20 to bond the coupling member 30 and the trowel. The plate 20 covers the connecting piece to form a sealing layer and a waterproof layer, which has dust-proof and waterproof effects and ensures that dirt and water vapor will not enter the bite groove 36 of the connecting piece 30 .

As shown in Figure 4, the engaging portion 44 of the bonding glue 40 is shaped according to the configuration of the engaging groove 36, and its cross-section is narrow on the outside and wide on the inside. In this way, the engaging portion 44 engages the engaging groove 36. , unable to come out of the bite groove. Therefore, the engaging portion 44 of the bonding glue 40 will not disengage from the bite groove 36 , so that the bonding glue 40 and the coupling member 30 form a stable bonding effect.

The structure of the present invention allows the bonding glue 40 to contact and connect the coupling member 30 with a larger amount and a larger area, which can effectively enhance the bonding effect between the soft bonding glue, the trowel plate 20 and the coupling member 30 According to the connection strength, the bonding relationship between the trowel plate 20, the connecting piece 30 and the bonding glue 40 is therefore more stable, making the structure of the trowel more stable, which is beneficial to the operation of the trowel in smoothing the wall. In addition, the overall structural strength and structural stability of the trowel are improved, which can enhance the durability of the trowel and extend its service life.

Figure 5 is a partial cross-sectional view of the trowel 10' of the second preferred embodiment of the present invention. The structure of the trowel 10' is the same as that of the first preferred embodiment, and also includes: a trowel plate 20 and a connecting member 30 , an adhesive layer 35, a bonding glue 40' and a handle component 50, the same component numbers are used for the same parts. The difference between this embodiment and the first embodiment is that: the cross-section of the bite groove 36' is T-shaped, and a small diameter portion is formed at the opening 361, and the width is smaller than the width inside; the cross-section of the bonding glue 40' It is also formed to match the cross-sectional shape of the bite groove 36', and its cross-section is also T-shaped, with a narrow outside and a wide inside. Thereby, the engaging portion 44' is engaged and cannot disengage from the engaging groove 36', making the bonding relationship between the trowel plate 20, the connecting piece 30 and the bonding glue 40 more stable and reliable.

Figure 6 is a partial cross-sectional view of the trowel 10" of the third preferred embodiment of the present invention. The structure of the trowel 10" is generally the same as that of the first preferred embodiment, and the similarities will not be repeated. The difference between this embodiment and the first embodiment is: The cross-section of the engaging groove 36" is circular, and the width of the opening 361 is smaller than the width of the interior. In particular, the opening 361 is made into a small diameter portion with a smaller width; the engaging portion 44 of the bonding glue 40" The cross-section is also shaped to match the cross-sectional shape of the bite groove 36, and its cross-section is also circular, with a narrow outside and a wide inside. Thereby, the engaging portion 44" is engaged and cannot escape from the engaging groove 36", making the bonding relationship between the trowel plate 20, the coupling member 30 and the bonding glue 40 more stable.

The functions of the trowel of the above-mentioned second preferred embodiment and third preferred embodiment can be understood from the first preferred embodiment.

The trowel provided by the present invention is the first structure in this technical field and has improved practical effects. The embodiments disclosed in the present invention are only for illustrating the technical means of the present invention and are not limiting. Any equivalent modifications of the present invention should be regarded as within the protection scope of the present invention.

10, 10’, 10”: Trowel

20: Trowel board

30:Combined parts

32:Screw hole

33:End wall

34:Side wall

35:Adhesive layer

36, 36’, 36”: bite groove

361:Open your mouth

40, 40’, 40”: bonding glue

42: Outer covering

44, 44’, 44”: meshing part

50: Grip assembly 52: Grip 54: Pillar 521, 541: Hole 56: Screw

The purpose, characteristics and achieved effects of the present invention can be understood from the following descriptions and drawings of several preferred embodiments, wherein: Figure 1 is a perspective view of the trowel according to the first preferred embodiment of the present invention. Figure 2 is an exploded perspective view of Figure 1, which does not show the soft bonding glue. Figure 3 is a cross-sectional view along line 3-3 in Figure 1. Figure 4 is a cross-sectional view along line 4-4 in Figure 1. Figure 5 is similar to Figure 4 and is a partial cross-sectional view of the trowel according to the second preferred embodiment of the present invention. Figure 6 is a partial cross-sectional view of the trowel according to the third preferred embodiment of the present invention.

20: Trowel board

30:Combined parts

32:Screw hole

34:Side wall

35:Adhesive layer

36:Occlusal groove

361:Open your mouth

40:Binding glue

42: Outer covering

44:Meshing part

50: Grip component

54:Pillar

56:Screw

Claims (7)

A trowel includes: a trowel plate; a strip-shaped coupling member disposed on the top surface of the trowel plate; a handle assembly having a handle, and the handle assembly is connected to the coupling member; a combination Glue is applied between the trowel plate and the connecting piece; wherein: the peripheral surface of the connecting piece is concavely provided with an engaging groove, and the width of the opening of the engaging groove is smaller than its internal width, making it wide on the inside and narrow on the outside. The configuration of the bonding glue has an outer covering part and a meshing part, and the outer covering part is arranged between the peripheral surface of the coupling part and the trowel plate to bond the coupling part and the trowel plate; the meshing part is provided It is in the bite groove and meshes with the bite groove. It corresponds to the configuration of the bite groove, and its cross section is narrow on the outside and wide on the inside. The trowel according to claim 1, wherein: the peripheral surface of the coupling member has two end walls and two side walls; the engaging groove is provided on the two side walls; and the engaging portion of the bonding glue engages the engaging grooves of the two side walls. The trowel according to claim 1 or 2, wherein: the peripheral surface of the coupling member has two end walls and two side walls; the engaging groove is provided on the two end walls; the engaging portion of the bonding glue engages the two end walls Occlusal groove. The trowel as claimed in claim 1, wherein: the bottom surface of the coupling member and the trowel plate are bonded with an adhesive layer. The trowel as described in claim 1, wherein: the cross-section of the engaging groove is dovetail-shaped. The trowel according to claim 1, wherein: the opening of the engaging groove is a small diameter portion with a smaller width. The trowel as described in claim 6, wherein the cross-section of the engaging groove is T-shaped or circular.

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