Novel putty knife

Abstract

The utility model provides a novel putty knife, which relates to the technical field of putty scrapers, and comprises a hollow knife handle, two side plates and a blade, the knife handle comprises a fixed part at the front end and a handheld part at the rear end, the fixed part is provided with a clamping groove for accommodating the tail part of the blade, the side plates are fixed at the side part of the knife handle, and the handheld part is provided with a clamping groove for accommodating the tail part of the blade. And the end part of the clamping groove can be blocked to limit the blade. According to the novel putty knife, the tail of the blade is clamped in the clamping groove, compared with bolt fixing, the back of the blade and a wall are not blocked by a protruding part, the blade can be prevented from being folded by limiting the blade front and back through the clamping groove, meanwhile, the two ends of the blade are limited through the side plates, and the blade can be prevented from sliding out of the clamping groove.

Description

Technical Field

[0001] This utility model relates to the field of putty scraper technology, specifically a new type of putty scraper. Background Technology

[0002] Putty (filler) is a decorative material used to smooth wall surfaces. It is a thick paste-like coating and an essential product before painting. Applying putty is one of the methods of interior wall decoration. Putty is applied to the wall to ensure a smooth surface. A putty knife is needed for applying putty.

[0003] Currently available putty knives, such as the one described in Chinese patent application number 202323493313.9, include a handle, a protective shell, and a blade. The handle is a single piece, including a handheld part and a bending part, which are set at a certain angle. The blade is a single piece, including a fixing part and a blade. The fixing part is partially fitted with the handheld part and is fixed to the handheld part by bolts and nuts. The blade is completely fitted with the bending part, and its front end extends into the bending part.

[0004] The putty knife described above has the following disadvantages: First, the blade is fixed to the fixing part with bolts. Since the bolts are exposed on the side facing the wall, it is easy to scrape the wall and cause damage when applying putty. Second, the back of the blade is not restrained. When applying putty, the blade is prone to bending away from the bend when subjected to force, and it is easy to spring back and cause damage when the force is released. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a novel putty knife that solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel putty knife, comprising a hollow knife handle, two side plates, and a blade. The knife handle includes a front fixing part and a rear hand-held part. The fixing part is provided with a groove for accommodating the tail of the blade. The side plates are fixed to the side of the knife handle and can block the end of the groove to limit the blade.

[0009] Preferably, a baffle is provided on the back of the slot on the fixing part, and the baffle extends along the direction of the blade tip.

[0010] Preferably, the side of the fixing part and the side plate are provided with screw holes, and the screw holes of the two are fixedly connected by bolts. The hand-held part is provided with a positioning groove, and the side plate is provided with a positioning protrusion corresponding to the positioning groove.

[0011] Preferably, the handle portion has a reinforcing rib along its length, and the positioning groove is formed on the reinforcing rib.

[0012] Preferably, a triangular tooth is provided in the slot along its length, the inclined surface of the triangular tooth faces upward, and a barb is provided on the side of the blade facing the triangular tooth, the barb being able to restrain the blade at the bottom of the triangular tooth.

[0013] Preferably, the back of the handheld part is a flat surface, and a plurality of connection holes for connecting the carrier are provided on the flat surface.

[0014] (III) Beneficial Effects

[0015] This utility model provides a novel putty knife. It has the following beneficial effects:

[0016] 1. This new type of putty knife has the tail of the blade locked in a groove. Compared with bolt fixing, this method has no protrusion between the back of the blade and the wall. The groove restricts the blade from breaking off, and the side plate limits both ends of the blade to prevent it from slipping out of the groove.

[0017] 2. When the blade of this new type of putty knife needs to be replaced, loosen the bolt and pull the side plate outward to disengage the positioning protrusion from the positioning groove. Then, rotate the side plate around the center of the bolt until it disengages from the slot. At this time, the blade can slide out laterally from the slot, so that the side plate does not need to be completely removed when the blade is disassembled. Attached Figure Description

[0018] Figure 1 This is an assembly drawing of the knife handle and blade of this utility model;

[0019] Figure 2 This is an anatomical diagram of the side panel of this utility model;

[0020] Figure 3 This is a schematic diagram of the positioning protrusion of this utility model;

[0021] Figure 4 This is a diagram showing the rotating state of the side plate of this utility model;

[0022] Figure 5 This is a diagram showing the blade removal state of this utility model.

[0023] In the diagram: 1. Knife handle, 2. Side plate, 3. Blade, 4. Slot, 5. Baffle, 6. Screw hole, 7. Bolt, 8. Reinforcing rib, 9. Positioning groove, 10. Positioning protrusion, 11. Fixing part, 12. Handle part, 13. Flat surface, 14. Connecting hole, 15. Triangular locking tooth, 16. Barb. Detailed Implementation

[0024] This utility model embodiment provides a novel putty knife, such as Figure 1-5 As shown, the knife includes a hollow handle 1, two side plates 2, and a blade 3. The handle 1 includes a front fixing part 11 and a rear hand-holding part 12. The upper and lower sides of the fixing part 11 and the hand-holding part 12 are connected by an arc groove. The fixing part 11 is provided with a slot 4 for accommodating the tail of the blade 3. The two sides of the slot 4 are open, and the blade 3 can be moved laterally from both ends of the slot 4. The side plates 2 are fixed to the side of the handle 1 and can block the end of the slot 4 to limit the blade 3.

[0025] The tail of the blade 3 is locked in the slot 4. Compared with bolt fixing, this method does not have any protrusions obstructing the back of the blade 3 from the wall. The slot 4 restricts the blade 3 from the front and back, which can also prevent the blade from breaking. At the same time, the side plate 2 limits the two ends of the blade 3, which can prevent the blade 3 from sliding out of the slot 4.

[0026] like Figure 1 As shown, a baffle 5 is provided on the back of the slot 4 on the fixing part 11, and the baffle 5 extends along the tip of the blade 3. When applying putty, the blade 3 is subjected to force towards the baffle 5, and the baffle 5 can provide a certain support force for the blade 3 to prevent the blade 3 from bending under force.

[0027] like Figure 2 As shown, the side of the fixing part 11 and the side plate 2 are both provided with screw holes 6, and the screw holes 6 of the two are fixedly connected by bolts 7. The hand-held part 12 is provided with a positioning groove 9, and the side plate 2 is provided with a positioning protrusion 10 corresponding to the positioning groove 9.

[0028] When the side plate 2 is locked by the bolt 7, the engagement between the positioning protrusion 10 and the positioning groove 9 can prevent the side plate 2 from rotating.

[0029] When it is necessary to replace the blade 3, loosen the bolt 7 (no need to unscrew it completely), then pull the side plate 2 outwards to disengage the positioning protrusion 10 from the positioning groove 9, and then rotate the side plate 2 around the center of the bolt 7 until it disengages from the retaining groove 4. Figure 4 As shown, the blade 3 can then slide out laterally from the slot 4, so that the side plate 2 does not need to be completely removed when the blade 3 is disassembled.

[0030] like Figure 2 As shown, a reinforcing rib 8 is provided along the length of the handle part 12, and a positioning groove 9 is formed on the reinforcing rib 8. The reinforcing rib 8 can prevent the positioning groove 9 from being broken by the positioning protrusion 10 and increase the strength of the positioning groove 9.

[0031] like Figure 5 As shown, a triangular tooth 15 is provided in the slot 4 along its length direction. The inclined surface of the triangular tooth 15 faces upward. The bottom surface of the triangular tooth 15 can be a plane or an inward and upward inclined surface. A barb 16 is provided on the side of the blade 3 facing the triangular tooth 15. The barb 16 can be restricted to the bottom of the triangular tooth 15.

[0032] When installing the blade 3, it can be directly inserted into the slot 4 from above, which facilitates the installation of the blade 3. However, when disassembling, it can only slide out to the sides of the slot 4. The blade 3 is restricted upward by the barb 16 and the triangular retaining tooth 15, which can prevent the blade 3 from sliding upward during use.

[0033] The back of the handle 12 is a flat surface 13, on which several connection holes 14 for connecting to a carrier are provided. The connection holes 14 are screw holes, and the handle 12 can be bolted to other carriers, such as a telescopic rod with a connecting plate.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel putty knife, characterized in that: The knife includes a hollow handle (1), two side plates (2), and a blade (3). The handle (1) includes a front fixing part (11) and a rear hand-held part (12). The fixing part (11) is provided with a slot (4) for accommodating the tail of the blade (3). The side plates (2) are fixed to the side of the handle (1) and can block the end of the slot (4) to limit the blade (3).

2. The novel putty knife according to claim 1, characterized in that: A baffle (5) is provided on the back of the slot (4) of the fixing part (11), and the baffle (5) extends along the tip of the blade (3).

3. A novel putty knife according to claim 2, characterized in that: The side of the fixing part (11) and the side plate (2) are provided with screw holes (6), and the screw holes (6) of the two are fixedly connected by bolts (7). The hand-held part (12) is provided with a positioning groove (9), and the side plate (2) is provided with a positioning protrusion (10) corresponding to the positioning groove (9).

4. A novel putty knife according to claim 3, characterized in that: The handheld part (12) is provided with a reinforcing rib (8) along its length direction, and the positioning groove (9) is formed on the reinforcing rib (8).

5. A novel putty knife according to claim 1, characterized in that: The slot (4) is provided with a triangular tooth (15) along its length direction. The inclined surface of the triangular tooth (15) faces upward. The blade (3) is provided with a barb (16) on the side facing the triangular tooth (15). The barb (16) can be restricted to the bottom of the triangular tooth (15).

6. A novel putty knife according to claim 1, characterized in that: The back of the handheld part (12) is a flat surface (13), and a plurality of connection holes (14) for connecting the carrier are provided on the flat surface (13).

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