Scraping tool with replaceable scraping blade

Abstract

The utility model discloses a blade coating tool with a replaceable scraping blade, which comprises a grip and the scraping blade, an abutting part is arranged in front of the grip, the abutting part is connected with a main body of the grip through a section of connecting part, and the connecting part obliquely extends forwards and downwards to enable the abutting part to be lower than the upper surface of the grip; the thickness of the front section of the abutting part is smaller than that of the rear section, and the scraper extends out of the front portion of the front section of the abutting part. A clamping part is arranged behind the connecting part, a clamping groove is formed by a gap between the clamping part and the connecting part, a section of fixing head is arranged at the tail part of the doctor blade, and the fixing head is locked in the clamping groove by inserting the fixing head into the clamping groove and screwing a screw. Therefore, the stability of the doctor blade can be improved, and the locking structure is simpler and more effective. The abutting part is designed to be of a stepped structure which becomes thinner and thinner forwards, and on the premise that enough strong support is provided for the doctor blade, the doctor blade can keep good elasticity. Therefore, the scraping blade can be conveniently replaced, and the effect of being more stable and easy to use is achieved.

Description

A replaceable scraper coating tool Technical Field

[0001] This utility model relates to the field of coating tool technology, and in particular to a coating tool with replaceable scraper blades. Background Technology

[0002] Scraping tools such as scrapers and putty scrapers are used in many fields, such as the putty scraper used in the decoration industry. Traditional scraping tools of this type usually only have a scraper blade (or scraper, scraper, etc.) and a handle, which are not easy to disassemble. This means that once the scraper blade is damaged, it must be discarded as a whole, and it is not possible to replace different scraper blades according to different needs, resulting in waste and inconvenience. To address this, people have invented some replaceable scraper blades. For example, a replaceable blade putty scraper disclosed in Chinese utility model patent CN219261657U works by inserting a locking block into a positioning groove, then passing a threaded rod through the locking block and inserting it into the threaded groove. A knob drives the threaded rod to rotate, causing the threaded rod to move within the threaded groove. The threaded rod drives the knob to move, and the knob presses the locking block to lock the blade, thus enabling quick blade replacement. However, the structure of this scraper has some problems. For example, the blade is fixed from the side by the locking component, resulting in insufficient locking effect on the blade and affecting the stability of the blade. At the same time, this locking structure is relatively complex and cumbersome to manufacture; for example, the structural design and large thickness of the longitudinal and transverse ribs inside the scraper body result in sufficient strength but insufficient elasticity. When the blade is pressed against this high-strength scraper body, it will basically lose its elasticity, which means it cannot meet the requirements for greater elasticity in some situations. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a replaceable scraping tool with a simpler structure, more reasonable design, and the ability to balance blade elasticity and strength while maintaining higher stability.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a replaceable scraper tool, comprising a handle and a scraper, the scraper being locked to the handle by screws; a straight, forward-extending abutment portion is provided at the front of the handle, the abutment portion being connected to the main body of the handle via a connecting portion, the connecting portion extending forward and downward at an angle so that the abutment portion is lower than the upper surface of the handle; the abutment portion is a thin plate structure, the thickness of its front section being less than the thickness of its rear section, the scraper extending forward from the front section of the abutment portion; a locking portion is provided at the rear of the connecting portion, a gap being formed between the locking portion and the connecting portion to form an inclined locking groove; the tail of the scraper has a fixing head, the fixing head forming a backward and upward inclined bending structure relative to the main body of the scraper; a plurality of locking holes are provided on the connecting portion, by inserting the fixing head into the locking groove and screwing screws into the locking holes of the connecting portion to lock the fixing head in the locking groove, thereby achieving the assembly and fixing of the scraper and making the scraper abut against the bottom surface of the abutment portion.

[0005] Furthermore, the abutting part has a three-section structure, consisting of a front section, a middle section, and a tail section from front to back. The thickness of the front section is less than that of the middle section, the thickness of the middle section is less than that of the tail section, and the tail section is connected to the connecting part.

[0006] Furthermore, the front section and the middle section have an inclined transition, and the middle section and the tail section have an inclined transition.

[0007] Preferably, the thickness of the front section is 0.8-1.2 mm, the thickness of the middle section is 1.4-1.6 mm, and the thickness of the tail section is 1.8-2.0 mm.

[0008] Furthermore, the front section of the latching part is curved forward and downward in an arc shape so that the width of the opening of the slot is greater than the width inside the slot.

[0009] Furthermore, an arc-shaped cavity is provided at the bottom of the handle to facilitate gripping, and the arc-shaped cavity extends backward from the snap-fit ​​part.

[0010] Preferably, the grip is made of aluminum alloy profile, and the abutment part, connecting part and snap-fit ​​part are integral with the main body of the grip.

[0011] Furthermore, the handle has a hollow interior structure, and end caps are provided at both ends of the handle for sealing.

[0012] Preferably, the thickness of the snap-fit ​​portion and the connecting portion is equal to the thickness of the tail section of the abutment portion.

[0013] This invention improves the stability of the scraper by using multiple screws to lock it in place on the front, while also simplifying and making the locking structure more effective. Furthermore, by designing the abutment portion at the front of the handle as a stepped structure that gradually thins towards the front, the scraper is provided with sufficient support while maintaining good elasticity. This achieves both convenient scraper replacement and a more stable and user-friendly performance. Attached Figure Description

[0014] Figure 1 is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 is a side view of the present invention;

[0016] Figure 3 is an exploded view of this utility model;

[0017] Figure 4 is a side view of the present invention after the end cap has been removed.

[0018] In the diagram, 1 is the handle, 11 is the connecting part, 12 is the abutting part, 13 is the tail section, 14 is the middle section, 15 is the front section, 16 is the snap-fit ​​part, 17 is the slot, 2 is the scraper, 21 is the fixing head, 3 is the end cap, 4 is the screw, and 5 is the arc-shaped cavity. Detailed Implementation

[0019] In this embodiment, referring to Figures 1-4, the replaceable scraper coating tool includes a handle 1 and a scraper 2. The scraper 2 can be made of materials such as plastic, stainless steel, or iron. A straight, forward-extending abutment portion 12 is provided at the front of the handle 1. The abutment portion 12 is connected to the main body of the handle 1 via a connecting portion 11. The connecting portion 11 extends forward and downward at an angle so that the abutment portion 12 is lower than the upper surface of the handle 1. This drop-type structure facilitates the coating operation. The abutment portion 12 has a thin plate-like structure, with the thickness of its front section less than the thickness of its rear section. The scraper 2 extends beyond the front of the abutment portion 12. The front of the section; a snap-fit ​​part 16 is provided behind the connecting part 11, and there is a gap between the snap-fit ​​part 16 and the connecting part 11 to form an inclined slot 17; the tail of the scraper 2 has a fixing head 21, and the fixing head 21 forms a structure that is bent backward and upward relative to the main body of the scraper 2; the connecting part 11 is provided with three locking holes, and the fixing head 21 is locked in the slot 17 by inserting the fixing head 21 into the slot 17 and using three screws 4 to screw into the locking holes of the connecting part 11 to achieve the assembly and fixation of the scraper 2 and make the scraper 2 abut against the bottom surface of the abutment part 12.

[0020] The abutment portion 12 has a three-section structure, consisting of a front section 13, a middle section 14, and a rear section 15 from front to back. The thickness of the front section 13 is less than that of the middle section 14, and the thickness of the middle section 14 is less than that of the rear section 15. The rear section 15 is connected to the connecting portion 11. This structure allows the front section 13 and the middle section 14 of the abutment portion 12 to have relatively high elasticity, thereby better balancing the clamping strength and elastic performance against the scraper 2. The rear section 15 is mainly used to provide higher clamping strength.

[0021] The front section 13 and the middle section 14 are inclined transitions, and the middle section 14 and the tail section 15 are inclined transitions. This makes the connecting transition parts more resilient and less prone to breakage.

[0022] The thickness of the front section 13 is 0.8-1.2mm, for example, 1mm; the thickness of the middle section 14 is 1.4-1.6mm, for example, 1.6mm; and the thickness of the tail section 15 is 1.8-2.0mm, for example, 1.8mm.

[0023] The front section of the snap-fit ​​part 16 is curved forward and downward so that the width of the opening of the slot 17 is greater than the width inside the slot 17. This flared structure makes it easy to install the scraper 2.

[0024] An arc-shaped cavity 5 is provided at the bottom of the handle 1 to facilitate gripping, and the arc-shaped cavity 5 extends backward from the snap-fit ​​part 16.

[0025] The grip 1 is made of aluminum alloy profile, and the abutment part 12, the connecting part 11 and the snap-fit ​​part 16 are integral with the main body of the grip 1.

[0026] The handle 1 has a hollow structure inside, and end caps 3 are provided at both ends of the handle 1 for sealing.

[0027] The thickness of the snap-fit ​​portion 16 and the connecting portion 11 is approximately 1.7 mm, which is about the same as the thickness of the tail section of the abutment portion 12.

[0028] To replace scraper blade 2, first loosen screw 4, then remove scraper blade 2, insert the new scraper blade, and finally tighten screw 4. Screw 4 can be tightened by hand without the need for tools.

[0029] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A replaceable scraper tool, comprising a handle and a scraper, the scraper being screwed onto the handle, characterized in that: A straight, forward-extending abutment is provided at the front of the handle. The abutment is connected to the main body of the handle via a connecting part. The connecting part extends forward and downward at an angle so that the abutment is lower than the upper surface of the handle. The abutment is a thin plate structure, with the thickness of its front section being less than that of its rear section. The scraper extends out of the front section of the abutment. A locking part is provided behind the connecting part, with a gap between the locking part and the connecting part to form an inclined locking groove. The tail of the scraper has a fixing head, which is bent backward and upward relative to the main body of the scraper. Several locking holes are provided on the connecting part. By inserting the fixing head into the locking groove and screwing the screw into the locking hole of the connecting part, the fixing head is locked in the locking groove to achieve the assembly and fixation of the scraper and make the scraper abut against the bottom surface of the abutment.

2. The coating tool with replaceable scraper blade according to claim 1, characterized in that: The abutment part has a three-section structure, consisting of a front section, a middle section, and a tail section from front to back. The thickness of the front section is less than that of the middle section, the thickness of the middle section is less than that of the tail section, and the tail section is connected to the connecting part.

3. The replaceable blade doctor blade tool of claim 2, wherein: The front and middle sections have an inclined transition, as do the middle and tail sections.

4. The coating tool with replaceable scraper blade according to claim 2, characterized in that: The thickness of the front section is 0.8-1.2 mm, the thickness of the middle section is 1.4-1.6 mm, and the thickness of the tail section is 1.8-2.0 mm.

5. The coating tool with replaceable scraper blade according to claim 1, characterized in that: The front section of the snap-fit ​​part is curved forward and downward in an arc shape so that the width of the opening of the slot is greater than the width inside the slot.

6. The coating tool with replaceable scraper blade according to claim 5, characterized in that: A curved cavity is provided at the bottom of the grip to facilitate hand gripping, and the curved cavity extends backward from the snap-fit ​​part.

7. The coating tool with replaceable scraper blade according to claim 1, characterized in that: The grip is made of aluminum alloy profile, and the abutment part, connecting part and snap-fit ​​part are integrated with the main body of the grip.

8. The coating tool with replaceable scraper blade according to claim 1, characterized in that: The handle has a hollow interior and is sealed with end caps at both ends.

9. The coating tool with replaceable scraper blade according to claim 4, characterized in that: The thickness of the snap-fit ​​portion and the connecting portion is equivalent to the thickness of the tail section of the abutment portion.

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