A wall spade with easy blade replacement

Abstract

This utility model discloses a wall scraper with easy blade replacement, relating to the field of wall scraper technology. It includes an outer shell, with trapezoidal baffles symmetrically arranged on both sides of the outer shell. A clamping plate is located inside the outer shell, and a blade sheath is located on the top of the outer shell. A trapezoidal support block is fixed to the bottom of the outer shell, and a cylindrical connecting block is fixed to the bottom end of the support block. The connecting block has an internal threaded groove. Positioning grooves are located on both sides of the outer shell, and rectangular slots are located on the front and rear sides of the top of the outer shell. Limiting grooves are provided on the upper part and both sides of the outer edge of the baffle. By creating internal threaded grooves on the connecting block, the wall scraper can be fitted with handles of different lengths to accommodate different height requirements.

Description

Technical Field

[0001] This utility model relates to the field of wall scrapers, and more particularly to a wall scraper with easily replaceable blades. Background Technology

[0002] A wall scraper is a tool used to repair walls, commonly used to remove old paint, textures, glue, and other substances from walls. It typically consists of a sharp blade and a comfortable handle, allowing for quick and effective scraping away impurities from walls. However, the blade may become damaged due to various reasons during use, requiring replacement to maintain its performance. Existing wall scrapers are often one-piece designs with complex blade fixing methods, requiring multiple bolts for secure installation, making blade replacement cumbersome. Furthermore, the operating height of wall scrapers varies considerably, and even height-adjustable levers cannot fully meet the needs. Therefore, this application designs a wall scraper with an easily replaceable blade to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a wall scraper that facilitates blade replacement.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a wall scraper that facilitates blade replacement, comprising an outer shell, two symmetrical baffles with trapezoidal tops on both sides of the outer shell, a clamping plate inside the outer shell, a blade sheath on the top of the outer shell, a trapezoidal support block fixed to the bottom surface of the outer shell, a cylindrical connecting block fixed to the bottom end of the support block, the connecting block having an internal threaded groove, positioning grooves on both sides of the outer shell, rectangular slots on the front and rear sides of the top of the outer shell, and a positioning groove on the outer side of the baffle.

[0005] Preferably, three triangular protrusions are provided at equal intervals on the outer center of the baffle.

[0006] Preferably, the bottom end of the positioning groove is provided with a snap-fit ​​groove, the bottom outer side of the snap-fit ​​groove is provided with a movable block, and a snap-fit ​​block is provided above the movable block. The snap-fit ​​block can be connected with the rectangular slots on both sides of the positioning groove.

[0007] Preferably, the blade sheath has semi-circular protrusions on the front and rear sides inside, and the semi-circular protrusions can be fixedly positioned with the slots on the outer shell.

[0008] Preferably, the outer shell has a groove inside, the width of the groove is gradually changing, and the outer side of the clamping plate has a slider with a gradually changing width protruding outward.

[0009] Preferably, the clamping plate has positioning holes on both sides of the middle part, and the positioning holes are used to fix the tool in the tool slot by pins.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, by opening an internal thread groove on the connecting block, the wall scraper can be replaced with handles of different lengths to adapt to different height requirements. By setting a triangular protrusion on the outside of the baffle, it is easier to move the baffle by applying force from the outside, making the baffle easier to install and disassemble. By fixing the semi-circular protrusion on the blade sheath with the slot on the outer shell, it can not only protect the blade but also prevent it from being damaged by the blade. The pin design makes the blade more stable and less prone to shaking and falling off. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the exploded structure proposed in this utility model;

[0014] Figure 3 This is a side view of the outer shell structure proposed in this utility model;

[0015] Figure 4 This is a bottom view of the outer shell structure proposed in this utility model;

[0016] Figure 5 This is a side view of the baffle structure proposed in this utility model;

[0017] Figure 6 This is a schematic diagram of the three-dimensional structure of the clamping plate proposed in this utility model.

[0018] The numbers in the diagram are: 1. Outer shell; 2. Baffle; 3. Pin; 4. Clamping plate; 5. Tool sheath; 6. Support block; 7. Connecting block; 8. Positioning groove; 9. Slide groove; 10. Slot; 11. Protrusion; 12. Snap-on groove; 13. Movable block; 14. Snap-on block; 15. Limiting groove; 16. Slider; 17. Tool placement groove; 18. Positioning hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example: See Figure 1-6 A wall scraper with easy blade replacement includes an outer shell 1. The outer shell 1 has symmetrical baffles 2 with trapezoidal tops on both sides. The inner side of the outer shell 1 has a clamping plate 4. The top of the outer shell 1 has a blade sheath 5. A trapezoidal support block 6 is fixed to the bottom of the outer shell 1. A cylindrical connecting block 7 is fixed to the bottom of the support block 6. The connecting block 7 has an internal threaded groove. The outer shell 1 has positioning grooves 8 on both sides. The top of the outer shell 1 has rectangular slots 10 on the front and rear sides. The upper part and both sides of the outer edge of the baffle 2 have limit grooves 15. By opening the internal threaded groove on the connecting block 7, the wall scraper can be replaced with handles of different lengths to meet the needs of different heights.

[0021] In this utility model, three triangular protrusions 11 are equidistantly arranged on the outer middle of the baffle 2. By setting the triangular protrusions 11 on the outer side of the baffle 2, it is easier to move the baffle 2 with force, and the baffle 2 is more convenient to install and disassemble. A buckle groove 12 is also provided on the baffle 2 below the limiting groove 15. A movable block 13 is provided on the outer bottom of the buckle groove 12, and a buckle block 14 is provided above the movable block 13. The buckle block 14 can be connected with the rectangular slots on both sides of the positioning groove 8. Through the design of the buckle groove 12, the movable block 13, and the buckle block 14, the connection status of the buckle block 14 can be controlled by the movement of the movable block 13 before and after the buckle is connected, thereby controlling the connection of the buckle and making the connection of the baffle 2 more secure and less likely to slip.

[0022] In this utility model, the blade sheath 5 has semi-circular protrusions on both the front and rear sides inside. The semi-circular protrusions can be fixedly positioned with the slots 10 on the outer shell 1. By fixing the blade sheath 5 with the slots 10 on the outer shell 1, not only can the blade be protected, but it can also be prevented from being damaged by the blade. The outer shell 1 has a sliding groove 9 inside. The width of the sliding groove 9 is gradually changing. The outer side of the clamping plate 4 has a slider 16 with a gradually changing width. By designing the sliding groove 9 and the slider 16 with a gradually changing width, the gap between the clamping plate 4 and the clamping plate 4 gradually decreases during installation, so that it can be tightly clamped to the outer shell 1 when the installation is completed. It is also more convenient to push it out from the other side of the installation when disassembling.

[0023] In this utility model, positioning holes 18 are provided on both sides of the middle part of the clamping plate 4. The positioning holes 18 fix the knife in the knife slot 17 by means of pins 3. The design of pins 3 makes the knife more stable and less likely to shake or fall off.

[0024] Working principle: When using this utility model, first remove the blade sheath 5 from the outer shell 1, then remove the baffle 2 at the inlet end of the clamping plate 4. When removing the baffle 2, the movable block 13 is pressed inward to release the buckle 14, which can cooperate with the rectangular slots on both sides of the positioning groove 8. With the help of the protrusion 11, the baffle 2 is removed. Then, the clamping plate 4 is pushed into the outer shell 1 from small to large to fix the clamping plate 4. Then, the baffle 2 is installed, and the assembly is completed. When changing the blade of the wall scraper, the baffles 2 at both ends and the blade sheath 5 need to be removed. Then, the clamping plate 4 is pushed out from the other side of the outlet using the trapezoidal top of the baffle 2. Then, the pin 3 is taken out and the new blade is fixed in the blade slot 17. After installing the pin 3, it is easy to complete the blade replacement.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wall scraper with easy blade replacement, comprising a housing (1), characterized in that: The outer shell (1) has symmetrical baffles (2) with trapezoidal tops on both sides. The outer shell (1) has a clamping plate (4) inside. The outer shell (1) has a knife sleeve (5) on top. The bottom surface of the outer shell (1) is fixed with a trapezoidal support block (6). The bottom end of the support block (6) is fixed with a cylindrical connecting block (7). The connecting block (7) has an internal thread groove. The outer shell (1) has positioning grooves (8) on both sides. The top and front sides of the outer shell (1) have rectangular slots (10). The upper part and sides of the outer edge of the baffle (2) have limit grooves (15).

2. A wall scraper with easily replaceable blades according to claim 1, characterized in that: The baffle (2) has three triangular protrusions (11) equidistantly arranged on the outer middle part.

3. A wall scraper with easily replaceable blades according to claim 2, characterized in that: A buckle groove (12) is also provided on the baffle (2) below the limiting groove (15). A movable block (13) is provided on the outer side of the bottom of the buckle groove (12). A buckle block (14) is provided above the movable block (13). The buckle block (14) can be connected with the rectangular slots on both sides of the positioning groove (8).

4. A wall scraper with easily replaceable blades according to claim 3, characterized in that: The blade sheath (5) has semi-circular protrusions on the front and rear sides inside, and the semi-circular protrusions can be fixedly positioned with the slots (10) on the outer shell (1).

5. A wall scraper with easily replaceable blades according to claim 4, characterized in that: The outer shell (1) has a groove (9) inside, the width of which is gradually changing, and the outer side of the clamp (4) has a slider (16) with a gradually increasing width.

6. A wall scraper with easily replaceable blades according to claim 5, characterized in that: The clamping plate (4) has positioning holes (18) on both sides of the middle part. The positioning holes (18) fix the knife in the knife slot (17) by means of pins (3).

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