Multi-size r-angle construction tool
By designing multi-size R-angle construction tools, the problem of traditional tools being unable to adapt to different curvatures is solved, enabling efficient and stable R-angle construction and improving the quality and waterproofing effect of bathrooms.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTRUCTION SECOND BUREAU (GUANGDONG) CONSTRUCTION CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-16
AI Technical Summary
Existing tools cannot adapt to different curvature requirements, resulting in low construction efficiency and unstable quality of bathroom R-corners, which can easily cause cracks, affect waterproofing, and increase maintenance costs.
Design a multi-size R-angle construction tool, including a frame, guide rail and R-angle rotating rod. The frame is connected by a telescopic crossbar, the guide rail provides a rotation fulcrum, and the elastic locking block locks the R-angle rotating rod, realizing quick assembly and disassembly and stable support.
It improves construction efficiency, ensures consistent R-angle dimensions, prevents displacement, enhances construction quality and waterproofing effect, and reduces maintenance costs.
Smart Images
Figure CN224363608U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building decoration construction technology, and specifically relates to a multi-size R-angle construction tool. Background Technology
[0002] Currently, quality control of bathroom rounded corners remains a key challenge in construction. Traditionally, bathroom rounded corners (inner corners) are rounded manually or using custom templates, resulting in low efficiency, large dimensional deviations, and uneven surfaces. Existing tools are mostly of fixed sizes, unable to adapt to different curvature requirements, leading to frequent tool changes on-site. Furthermore, the quality of inner corner treatment directly affects waterproofing; manual operation is prone to cracking, causing leaks and requiring repairs, increasing maintenance costs. Utility Model Content
[0003] The purpose of this invention is to provide a multi-size R-angle construction tool that can solve the problems of low efficiency and unstable quality in traditional processes.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0005] A multi-size R-angle construction tool includes a frame, guide rails, and an R-angle rotating rod. Two frames are arranged symmetrically from left to right and connected by a telescopic crossbar. Each frame has a horizontal contact surface for contacting a wall and a vertical contact surface for contacting the ground. Two guide rails are also arranged symmetrically from left to right and are fixed to the sides of the two frames. Each guide rail extends downwards at an angle, and its lower end has multiple pin holes spaced equidistantly along its length. One end of the R-angle rotating rod has a handle, and the other end has a scraper. A pin shaft, rotatably connected to the pin holes, is fixed to the outer periphery of the R-angle rotating rod near the scraper. The pin shaft passes through the pin holes and has an elastic locking block on its protruding end. When the elastic locking block protrudes from the pin shaft under elastic force, it can abut against the side of the guide rail. When pressed by external force, the elastic locking block can retract into the pin shaft.
[0006] As a preferred embodiment of this utility model, two elastic blocks are provided, and the two elastic blocks are symmetrically arranged on two opposite sides of the pin.
[0007] As a preferred embodiment of this utility model, the pin is provided with a receiving hole for the elastic block to retract into, and a first compression spring is provided in the receiving hole. One end of the first compression spring abuts against the elastic block, and the other end of the first compression spring abuts against the bottom of the receiving hole.
[0008] As a preferred embodiment of this utility model, a first limiting structure is provided between the receiving hole and the elastic block to prevent the elastic block from dislodging from the receiving hole.
[0009] Furthermore, the inner wall of the receiving hole is provided with a first limiting shoulder, and the outer periphery of the elastic block is provided with a first limiting ring. When the elastic block protrudes from the pin under the elastic force of the first compression spring, the first limiting ring and the first limiting shoulder abut against each other to form the first limiting structure.
[0010] As a preferred embodiment of this utility model, the protruding end of the elastic block is provided with an inlet inclined surface, which is located on the side of the extension direction of the pin.
[0011] As a preferred embodiment of this utility model, the frame is welded together from horizontal pipes, vertical pipes and inclined pipes. The vertical pipe is located above the front side of the horizontal pipe, and the inclined pipe is connected between the horizontal pipe and the vertical pipe. The side of the vertical pipe that is in contact with the wall is the vertical contact surface, and the side of the horizontal pipe that is in contact with the ground is the horizontal contact surface.
[0012] As a preferred embodiment of this utility model, the horizontal pipe, the vertical pipe, and the inclined pipe are all square steel pipes.
[0013] As a preferred embodiment of this utility model, the guide rail is fixed to the inclined tube by welding, the inclination angle of the guide rail is 45 degrees, and the extension line of the guide rail in the length direction is the angle bisector of the corner.
[0014] As a preferred embodiment of this utility model, the telescopic crossbar includes a sleeve and a telescopic rod. The sleeve is fixedly connected to a frame on one side, and the telescopic rod is fixedly connected to a frame on the other side. The sleeve is slidably fitted onto the telescopic rod, and the sleeve and the telescopic rod are locked together by a pin.
[0015] As a preferred embodiment of this utility model, the sleeve is provided with a plurality of locking holes arranged at equal intervals along the length of the sleeve, and the telescopic rod is provided with an installation hole for inserting the pin. The protruding end of the pin can pass through the locking hole to lock the position of the sleeve. A second compression spring is provided in the installation hole, one end of the second compression spring abuts against the pin, and the other end of the second compression spring abuts against the bottom of the installation hole.
[0016] As a preferred embodiment of this utility model, a second limiting structure is provided between the mounting hole and the pin to prevent the pin from dislodging from the mounting hole.
[0017] Furthermore, the inner wall of the mounting hole is provided with a second limiting shoulder, and the outer periphery of the pin is provided with a second limiting ring. When the pin protrudes from the telescopic rod under the elastic force of the second compression spring, the second limiting ring and the second limiting shoulder abut against each other to form the second limiting structure.
[0018] As a preferred embodiment of this utility model, the protruding end of the pin is provided with a spherical end.
[0019] The multi-size R-angle construction tool provided by this utility model has the following advantages compared with the prior art:
[0020] (1) The left and right symmetrical frames are connected by telescopic crossbars, so that the distance between the two frames can be adjusted to adapt to corners of different widths; and the frames are in close contact with the ground and wall at the corner through horizontal and vertical mating surfaces to form stable support and prevent displacement during operation.
[0021] (2) The guide rail provides a fulcrum for the R-angle rotating rod and extends downwards to guide the scraper to the corner line to ensure that the scraper always fits the corner line; the pin hole is used to fix the scraper height and control the consistency of the R-angle size; multiple pin holes support the segmented positioning of the scraper to adapt to different R-angle (i.e., arc) requirements.
[0022] (3) The R-angle rotating rod and the guide rail are locked by an elastic block: after the pin is inserted into the guide rail pin hole, the elastic block pops out and locks the side of the guide rail. Pressing the elastic block can retract it into the pin, realizing quick disassembly and assembly; and, by inserting the tool into the corner of the wall, the rotating rod can complete operations such as flattening, smoothing and shaping, improving construction efficiency. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0024] Figure 1 This is a structural schematic diagram of the multi-size R-angle construction tool provided in this embodiment of the utility model;
[0025] Figure 2 This is a front view of the frame connected to the guide rail;
[0026] Figure 3 This is the front view of the R-angle rotating member connected to the guide rail;
[0027] Figure 4 It is at Figure 2 A cross-sectional view along direction AA in the structure shown;
[0028] Figure 5 It is at Figure 3 A magnified view of region B in the structure shown.
[0029] Marked in the image:
[0030] Frame 10; Horizontal bonding surface 10a; Vertical bonding surface 10b; Horizontal tube 11; Vertical tube 12; Inclined tube 13;
[0031] Guide rail 20; Pin hole 21;
[0032] 30. R-angle rotating rod; 31. Handle; 32. Scraper; 33. Pin; 34. Elastic block; 35. Accommodating hole; 36. First compression spring; 37. First limiting structure; 371. First limiting shoulder; 372. First limiting ring; 38. Guide slope.
[0033] Telescopic crossbar 40; sleeve 41; telescopic rod 42; pin 43; locking hole 44; mounting hole 45; second compression spring 46; second limiting structure 47; second limiting shoulder 471; second limiting ring 472; spherical end 48. Detailed Implementation
[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0038] Please refer to the following: Figures 1 to 5The multi-size R-angle construction tools provided in the embodiments of this utility model will now be described.
[0039] The multi-size R-angle construction tool of this utility model embodiment includes a frame 10, a guide rail 20, and an R-angle rotating rod 30.
[0040] Two frames 10 are arranged symmetrically from left to right, and the two frames 10 are connected by a telescopic crossbar 40; each frame 10 has a horizontal contact surface 10a that is in contact with the wall and a vertical contact surface 10b that is in contact with the ground.
[0041] Understandably, the symmetrical frame 10 is connected by telescopic crossbars 40, allowing the spacing between the two frame 10s to be adjustable to accommodate corners of different widths; furthermore, the frame 10 is in close contact with the ground and wall at the corner through the horizontal contact surface 10a and the vertical contact surface 10b, forming a stable support and preventing displacement during operation.
[0042] There are two guide rails 20 arranged symmetrically from left to right, and the two guide rails 20 are respectively fixed to the sides of the two skeletons 10; the guide rails 20 are arranged inclined downwards, and their lower ends are provided with a plurality of pin holes 21 that are equidistantly arranged along the length of the guide rails 20.
[0043] Understandably, the guide rail 20 provides a fulcrum for the R-angle rotating rod 30, and extends downwards at an angle to guide the scraper close to the corner line, ensuring that the scraper always fits the corner line; the pin hole 21 is used to fix the scraper height and control the consistency of the R-angle size; the multiple pin holes 21 support the segmented positioning of the scraper to adapt to different R-angle (i.e., curvature) requirements.
[0044] One end of the R-angle rotating rod 30 is fixed with a handle 31, and the other end is fixed with a scraper 32. A pin 33 that is rotatably connected to the pin hole 21 is fixed on the outer periphery of the R-angle rotating rod 30 near the scraper 32. The pin 33 passes through the pin hole 21 and has an elastic block 34 on the outer periphery of its protruding end. When the elastic block 34 protrudes from the pin 33 under the action of elastic force, it can abut against the side of the guide rail 20. When the elastic block 34 is pressed by external force, it can retract into the pin 33.
[0045] It is understandable that the R-angle rotating rod 30 and the guide rail 20 are locked together by an elastic locking block 34: after the pin 33 is inserted into the pin hole 21 of the guide rail 20, the elastic locking block 34 pops out and locks the side of the guide rail 20. Pressing the elastic locking block 34 can retract it into the pin 33, realizing quick disassembly and assembly; and, by inserting the tool into the corner of the wall, the rotating rod can complete operations such as flattening, smoothing and shaping, improving construction efficiency.
[0046] For example, there are two elastic blocks 34, which are symmetrically arranged on two opposite sides of the pin 33 to enhance the stability of the connection between the R-angle rotating rod 30 and the guide rail 20.
[0047] For example, the pin 33 has a receiving hole 35 for the retractable elastic block 34. A first compression spring 36 is provided in the receiving hole 35. One end of the first compression spring 36 abuts against the elastic block 34, and the other end of the first compression spring 36 abuts against the bottom of the receiving hole 35. Thus, the preload of the first compression spring 36 provides a constant elastic force, ensuring that the block is always effectively locked.
[0048] For example, a first limiting structure 37 for preventing the elastic block 34 from disengaging from the receiving hole 35 is provided between the receiving hole 35 and the elastic block 34. In this embodiment, the inner wall of the receiving hole 35 is provided with a first limiting shoulder 371, and the outer periphery of the elastic block 34 is provided with a first limiting ring 372. When the elastic block 34 protrudes from the pin 33 under the elastic force of the first compression spring 36, the first limiting ring 372 and the first limiting shoulder 371 abut against each other to form the first limiting structure 37. Thus, the mechanical limiting of the first limiting structure 37 prevents the block from excessively popping out of the pin 33, preventing the loss of parts.
[0049] For example, the protruding end of the elastic block 34 is provided with an inlet ramp 38, which is located on the side of the protruding direction of the pin 33. Thus, the inlet ramp 38 can guide the elastic block 34 to compress automatically, reduce the resistance to insertion into the pin hole 21, and effectively solve the problem of precise alignment and cumbersome operation when inserting the pin 33 into the pin hole 21.
[0050] For example, the frame 10 is welded together from a horizontal pipe 11, a vertical pipe 12, and an inclined pipe 13. The vertical pipe 12 is located above and in front of the horizontal pipe 11, and the inclined pipe 13 connects the horizontal pipe 11 and the vertical pipe 12. The side of the vertical pipe 12 that is in contact with the wall is the vertical contact surface 10b, and the side of the horizontal pipe 11 that is in contact with the ground is the horizontal contact surface 10a. Thus, the horizontal pipe 11 and the vertical pipe 12 form a 90° reference plane, ensuring that the frame 10 is in contact with the wall and the ground.
[0051] For example, the horizontal pipe 11, the vertical pipe 12 and the inclined pipe 13 are all 20×20mm square steel pipes to improve the overall rigidity of the frame 10 and facilitate manufacturing.
[0052] For example, the guide rail 20 is fixed to the inclined pipe 13 by welding. The inclined angle of the guide rail 20 is 45 degrees, and the extension line of the guide rail 20 in the length direction is the angle bisector of the corner of the wall, so as to ensure the symmetry of the R angle and prevent the mortar from being unevenly distributed on both sides of the wall / floor, which would cause unilateral hollowing.
[0053] For example, the telescopic crossbar 40 includes a sleeve 41 and a telescopic rod 42. The sleeve 41 is fixedly connected to a frame 10 on one side, and the telescopic rod 42 is fixedly connected to a frame 10 on the other side. The sleeve 41 is slidably fitted onto the telescopic rod 42, and the sleeve 41 and the telescopic rod 42 are locked together by a pin 43. In this embodiment, the sleeve 41 has a plurality of locking holes 44 arranged at equal intervals along the length of the sleeve 41, and the telescopic rod 42 has a mounting hole 45 for the pin 43 to be inserted. The protruding end of the pin 43 can pass through the locking hole 44 to lock the position of the sleeve 41. A second compression spring 46 is provided in the mounting hole 45. One end of the second compression spring 46 abuts against the pin 43, and the other end of the second compression spring 46 abuts against the bottom of the mounting hole 45. Therefore, the sleeve 41 and the telescopic rod 42 are locked together by a pin 43. When the sleeve 41 and the telescopic rod 42 slide relative to each other until the pin 43 is aligned with any of the locking holes 44, the pin 43 pops out under the elastic force of the second compression spring 46 and inserts into the locking hole 44, and protrudes from the other side of the locking hole 44 (forming a pressing part), thereby locking the relative position of the sleeve 41 and the telescopic rod 42. Pressing the pin 43 can retract it into the telescopic rod 42, realizing quick unlocking and facilitating the adjustment of the distance between the two frames 10.
[0054] For example, a second limiting structure 47 is provided between the mounting hole 45 and the pin 43 to prevent the pin 43 from disengaging from the mounting hole 45. In this embodiment, the inner wall of the mounting hole 45 is provided with a second limiting shoulder 471, and the outer periphery of the pin 43 is provided with a second limiting ring 472. When the pin 43 protrudes from the telescopic rod 42 under the elastic force of the second compression spring 46, the second limiting ring 472 and the second limiting shoulder 471 abut against each other to form the second limiting structure 47. Thus, the mechanical limiting of the second limiting structure 47 prevents the pin 43 from excessively ejecting from the telescopic rod 42, preventing the loss of parts.
[0055] For example, the protruding end of the pin 43 is provided with a spherical end 48. This design allows the pin 43 to be exposed without being fully retracted into the telescopic rod 42. The spherical end 48 can be used to automatically press and retract into the telescopic rod 42 when the sleeve 41 and the telescopic rod 42 slide relative to each other, solving the problem that the traditional pin 43 must be fully pressed to be flush with the rod wall before it can slide.
[0056] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. A multi-size R-angle construction tool, characterized in that, include: There are two frames arranged symmetrically on the left and right, and the two frames are connected by a telescopic crossbar; the frames are provided with a horizontal contact surface that fits against the wall and a vertical contact surface that fits against the ground. There are two guide rails arranged symmetrically on the left and right, and the two guide rails are respectively fixed to the sides of the two frames; the guide rails extend downward at an angle, and their lower ends are provided with a plurality of pin holes that are equidistantly arranged along the length of the guide rail. The R-angle rotating rod has a handle fixed at one end and a scraper fixed at the other end. A pin shaft that is rotatably connected to the pin hole is fixed on the outer periphery of the R-angle rotating rod near the scraper. The pin shaft passes through the pin hole and has an elastic block on the outer periphery of its protruding end. When the elastic block protrudes from the pin shaft under the action of elastic force, it can abut against the side of the guide rail. When the elastic block is pressed by external force, it can retract into the pin shaft.
2. The multi-size R-angle construction tool as described in claim 1, characterized in that, Two elastic blocks are provided, and the two elastic blocks are symmetrically arranged on two opposite sides of the pin.
3. The multi-size R-angle construction tool as described in claim 2, characterized in that, The pin has a receiving hole for the retractable elastic block. A first compression spring is provided in the receiving hole. One end of the first compression spring abuts against the elastic block, and the other end of the first compression spring abuts against the bottom of the receiving hole.
4. The multi-size R-angle construction tool as described in claim 3, characterized in that, A first limiting structure is provided between the receiving hole and the elastic block to prevent the elastic block from dislodging from the receiving hole.
5. The multi-size R-angle construction tool as described in claim 2, characterized in that, The protruding end of the elastic block is provided with an inlet ramp, which is located on the side of the pin in the extension direction.
6. The multi-size R-angle construction tool as described in claim 1, characterized in that, The frame is welded from horizontal pipes, vertical pipes and inclined pipes. The vertical pipes are located above the front side of the horizontal pipes. The inclined pipes are connected between the horizontal pipes and the vertical pipes. The horizontal pipes, the vertical pipes and the inclined pipes are all square steel pipes. The side of the vertical pipe that is in contact with the wall is the vertical contact surface, and the side of the horizontal pipe that is in contact with the ground is the horizontal contact surface.
7. The multi-size R-angle construction tool as described in claim 6, characterized in that, The guide rail is fixed to the inclined tube by welding. The inclination angle of the guide rail is 45 degrees, and the extension line of the guide rail in the length direction is the angle bisector of the corner.
8. The multi-size R-angle construction tool as described in any one of claims 1 to 7, characterized in that, The telescopic crossbar includes a sleeve and a telescopic rod. The sleeve is fixedly connected to the frame on one side, and the telescopic rod is fixedly connected to the frame on the other side. The sleeve is slidably fitted onto the telescopic rod, and the sleeve and the telescopic rod are locked together by a pin.
9. The multi-size R-angle construction tool as described in claim 8, characterized in that, The sleeve has multiple locking holes arranged at equal intervals along its length. The telescopic rod has mounting holes for inserting the pin. The protruding end of the pin can pass through the locking holes to lock the sleeve in position. A second compression spring is provided in the mounting hole. One end of the second compression spring abuts against the pin, and the other end of the second compression spring abuts against the bottom of the mounting hole. The protruding end of the pin has a spherical end.
10. The multi-size R-angle construction tool as described in claim 9, characterized in that, A second limiting structure is provided between the mounting hole and the pin to prevent the pin from dislodging from the mounting hole.