Metal set square ruler structure
By using a one-piece molded 6061 aluminum alloy triangle, combined with hard anodizing treatment and multi-functional design, the problems of easy wear and insufficient precision of traditional triangles are solved, achieving high-precision drawing and measurement results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU LINMING HARDWARE CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-15
AI Technical Summary
Traditional set squares are prone to wear and deformation, have limited functionality, insufficient scale accuracy, and lack auxiliary measurement and stable support designs, resulting in low drawing efficiency, large measurement errors, and difficulty in meeting high-precision requirements.
It adopts a one-piece molded 6061 aluminum alloy base plate with an isosceles triangle structure with continuous length scale and a central hollow groove design. Combined with hard anodizing treatment, it increases wear resistance and structural strength, and is equipped with a multi-functional measurement channel and anti-slip coating to provide stable support and auxiliary drawing functions.
It improves the durability and measurement accuracy of the set square, enhances the flexibility and efficiency of drawing, meets high-precision requirements, and is suitable for a variety of measurement and drawing scenarios.
Smart Images

Figure CN224240695U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measuring tool technology, and in particular to a metal triangle ruler structure. Background Technology
[0002] In engineering drawing, machining, and education, set squares are commonly used drafting and measuring tools. Traditional set squares are usually made of plastic or ordinary metal, with a simple structure, providing only basic angle and line drawing functions. However, these tools have significant shortcomings: plastic set squares are easily worn and deformed, while metal set squares are bulky, have limited functionality, insufficient scale accuracy, and lack auxiliary measurement and stable support designs, resulting in low drafting efficiency, large measurement errors, and difficulty in meeting high-precision requirements.
[0003] Chinese patent discloses a linear dividing ruler (publication number: CN102358096A) including a set square. The set square is made of transparent plastic, with its base as the base ruler and one hypotenuse as the dividing ruler. The dividing ruler has a groove parallel to the edge of the dividing ruler. A slider is located on the dividing ruler, and a protrusion at the bottom of the slider is embedded in the groove and slides in cooperation with the groove. The slider and the sliding ruler are connected by bolts and butterfly screws. However, this linear ruler is prone to wear and tear, has a single function, insufficient scale accuracy, and lacks auxiliary measurement and stable support design, resulting in low drawing efficiency, large measurement error, and difficulty in meeting high precision requirements. Therefore, a metal set square structure is needed. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing straight rulers, such as easy wear and tear, limited functionality, insufficient scale accuracy, lack of auxiliary measurement and stable support design, resulting in low drawing efficiency, large measurement errors, and difficulty in meeting high precision requirements. Therefore, this invention proposes a metal triangle ruler structure.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The metal triangle ruler structure of this utility model includes an integrally formed triangular metal substrate, characterized in that: the triangular metal substrate is an isosceles triangle structure, the triangular metal substrate is provided with a first right-angled side, a second right-angled side and a hypotenuse, the first right-angled side, the second right-angled side and the hypotenuse are all provided with continuous length scales, the center of the triangular metal substrate is provided with a hollow lightweight groove, and the outer side of the hollow lightweight groove is respectively provided with a first hollow measurement channel, a second hollow measurement channel and a third hollow measurement channel, the first hollow measurement channel and the second hollow measurement channel are respectively parallel to the two right-angled sides. Multifunctional Measurement: All three sides are graduated, allowing direct measurement of right-angled and hypotenuse lengths, suitable for dimensional measurement in different directions, improving the flexibility of drafting and engineering measurement; Lightweight Design: The central hollow slot reduces overall weight, making it easy to carry and use without compromising structural strength; Auxiliary Drafting Function: Measurement channels parallel to the right-angled sides can be used to draw parallel lines or assist in positioning, improving drafting accuracy and efficiency; Integrated Structure: The one-piece molding design enhances durability and avoids the loosening or deformation problems of traditional spliced triangles.
[0006] Preferably, the bottom of the second right-angled side is provided with a right-angled base, and the bottom of the right-angled base is provided with an anti-slip coating. The right-angled base provides a stable reference surface, ensuring that the triangle is not easy to slip when drawing or measuring, thus improving operational accuracy; the anti-slip coating enhances friction with the tabletop, making it suitable for smooth surfaces or inclined working environments.
[0007] Preferably, the length scale includes a dual-system arrangement of metric centimeters and imperial inches. It supports both metric and imperial units, meeting the needs of different national or industry standards, and is suitable for multiple fields such as engineering, construction, and education; unit switching can be done quickly without additional tools, improving measurement efficiency.
[0008] Preferably, the triangular metal substrate is made of 6061 aluminum alloy, and the surface is treated with hard anodizing to form a wear-resistant layer. 6061 aluminum alloy provides good strength and lightweight properties, while hard anodizing enhances surface hardness, prevents scratches and wear, and extends service life; the oxide layer improves corrosion resistance, making it suitable for humid or industrial environments.
[0009] Preferably, the inner wall of the first hollowed-out measuring channel is provided with scribing grooves, and the number of scribing grooves is 10 to 20, arranged in an equally spaced array. The scribing grooves can be used to quickly divide equidistant points, which is convenient for drawing grids, parallel lines or proportional divisions, and improves drawing efficiency; the equidistant arrangement ensures the consistency of markings and reduces manual measurement errors.
[0010] Preferably, the right-angle base has a functional groove on its side. The groove can be used to fix pens (such as pencils or compasses) to prevent them from rolling away, or as an auxiliary positioning structure; the groove may be used for drawing specific shapes (such as arcs with a fixed radius) to enhance the applicability of the triangle.
[0011] The advantages of this utility model are:
[0012] The metal triangle ruler structure of this application utilizes a one-piece molded 6061 aluminum alloy substrate combined with hard anodizing treatment, significantly improving wear resistance and structural strength to ensure no deformation during long-term use. All three sides are equipped with metric / imperial dual-system graduations to meet different measurement needs. The beveled edge graduations can directly measure oblique dimensions, improving drawing flexibility. A central hollow lightweight groove reduces weight while extending three measurement channels. Two of these channels are parallel to the right-angled sides, facilitating the drawing of parallel lines or auxiliary positioning, while the third channel provides oblique measurement support, enhancing versatility. The right-angled base and anti-slip coating ensure stable support, prevent slippage, and improve drawing accuracy. The equidistant scribing grooves in the first measurement channel can quickly divide into equal division points, simplifying grid or proportional drawing. Functional grooves on the sides of the base can be used to fix pens or assist in drawing special shapes, further expanding the application scenarios. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This utility model Figure 2 Enlarged view of I in the middle.
[0016] Figure 3 This is a schematic diagram of the main structure of this utility model.
[0017] In the figure: 1. First hollowed-out measurement channel; 2. Second hollowed-out measurement channel; 3. Third hollowed-out measurement channel; 4. First right-angled side; 5. Second right-angled side; 6. Hypotenuse; 7. Triangular metal substrate; 8. Scribing groove; 9. Right-angled base; 10. Hollowed-out lightweight groove; 11. Functional groove. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0019] Example
[0020] Please see Figure 1-3 As shown, a metal triangle ruler structure includes an integrally formed triangular metal substrate 7. The triangular metal substrate 7 is an isosceles triangle structure. The triangular metal substrate 7 has a first right-angled side 4, a second right-angled side 5, and a hypotenuse 6. The first right-angled side 4, the second right-angled side 5, and the hypotenuse 6 are all provided with continuous length markings. A hollow lightweight groove 10 is provided at the center of the triangular metal substrate 7. A first hollow measuring channel 1, a second hollow measuring channel 2, and a third hollow measuring channel 3 are respectively opened on the outer side of the hollow lightweight groove 10. The first hollow measuring channel 1 and the second hollow measuring channel 2 are parallel to the two right-angled sides, respectively. Multifunctional Measurement: All three sides are graduated, allowing direct measurement of the length of right-angled sides and hypotenuses. Suitable for dimensional measurement in different directions, improving the flexibility of drafting and engineering measurement; Lightweight Design: The central hollow slot reduces the overall weight, making it easy to carry and use without affecting structural strength; Auxiliary Drafting Function: The measurement channel parallel to the right-angled side can be used to draw parallel lines or assist in positioning, improving drafting accuracy and efficiency; Integrated Structure: The one-piece molding design enhances durability and avoids the loosening or deformation problems of traditional spliced triangles.
[0021] In this embodiment, the bottom of the second right-angled side 5 is provided with a right-angled base 9, and the bottom of the right-angled base 9 is provided with an anti-slip coating. The right-angled base 9 provides a stable reference surface, ensuring that the triangle is not easy to slip when drawing or measuring, thus improving the accuracy of operation; the anti-slip coating enhances the friction with the tabletop, making it suitable for smooth surfaces or inclined working environments.
[0022] In this embodiment, the length scale includes a dual-system arrangement of metric centimeters and imperial inches. It supports both metric and imperial units, meeting the needs of different national or industry standards, and is suitable for multiple fields such as engineering, construction, and education. Unit switching can be done quickly without additional tools, improving measurement efficiency.
[0023] In this embodiment, the triangular metal substrate 7 is made of 6061 aluminum alloy, and its surface is treated with hard anodizing to form a wear-resistant layer. 6061 aluminum alloy provides good strength and lightweight characteristics, while hard anodizing enhances surface hardness, prevents scratches and wear, and extends service life; the oxide layer improves corrosion resistance, making it suitable for humid or industrial environments.
[0024] In this embodiment, the inner wall of the first hollowed-out measuring channel 1 is provided with scribing grooves 8, and the number of scribing grooves 8 is 10 to 20, arranged in an equally spaced array. The scribing grooves 8 can be used to quickly divide equidistant points, which is convenient for drawing grids, parallel lines or proportional divisions, and improves drawing efficiency; the equidistant arrangement ensures the consistency of markings and reduces manual measurement errors.
[0025] In this embodiment, the right-angle base 9 has a functional groove 11 on its side. The groove can be used to fix pens (such as pencils or compasses) to prevent them from rolling away, or as an auxiliary positioning structure; the groove may be used for drawing specific shapes (such as arcs with a fixed radius) to enhance the applicability of the triangle.
[0026] The implementation principle of this embodiment is as follows:
[0027] Basic measurements:
[0028] When measuring the length of a straight line, the user can directly observe the dual-scale (cm / inch) on the first right-angled side 4, the second right-angled side 5, or the hypotenuse 6 to take the reading. Since all three sides have continuous scales, measurements can be completed quickly, whether horizontal, vertical, or oblique, making it particularly suitable for quickly confirming dimensions in different directions when drawing engineering drawings. When drawing parallel lines, align the first cutout measurement channel 1 (parallel to the first right-angled side 4) or the second cutout measurement channel 2 (parallel to the second right-angled side 5) with the baseline, and move the triangle along the channel to easily draw a new line that is completely parallel to the baseline. Using the scribed grooves 8 that are equidistantly arranged in the first cutout measurement channel 1, align the scribed grooves 8 with the line segment to be divided to quickly mark the division points.
[0029] Stable plotting:
[0030] During the drawing process: Place the right-angle base 9 firmly against the edge of the drawing board, using its 90-degree reference surface to ensure accurate positioning of the triangle. The anti-slip coating on the bottom of the base prevents the triangle from slipping accidentally; the anti-slip effect is particularly noticeable when used on smooth or inclined surfaces. For special drawing needs, use the functional groove 11 on the side of the right-angle base 9 to fix a pencil or compass. The groove can also serve as an aid in drawing specific shapes, such as drawing arcs with a fixed radius.
[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A metal triangle ruler structure, comprising an integrally formed triangular metal substrate (7), characterized in that... The triangular metal substrate (7) is an isosceles triangle structure. The triangular metal substrate (7) is provided with a first right-angled side (4), a second right-angled side (5) and a hypotenuse (6). The first right-angled side (4), the second right-angled side (5) and the hypotenuse (6) are all provided with continuous length scales. The center of the triangular metal substrate (7) is provided with a hollow lightweight groove (10). The outer side of the hollow lightweight groove (10) is provided with a first hollow measurement channel (1), a second hollow measurement channel (2) and a third hollow measurement channel (3). The first hollow measurement channel (1) and the second hollow measurement channel (2) are parallel to the two right-angled sides respectively.
2. The metal triangle ruler structure according to claim 1, characterized in that: The bottom of the second right-angled side (5) is provided with a right-angled base (9), and the bottom of the right-angled base (9) is provided with an anti-slip coating.
3. The metal set square structure according to claim 1, characterized in that: The length scale includes a dual-system arrangement of metric centimeters and imperial inches.
4. The metal set square structure according to claim 1, characterized in that: The triangular metal substrate (7) is made of 6061 aluminum alloy and its surface is hard anodized to form a wear-resistant layer.
5. The metal triangle ruler structure according to claim 1, characterized in that: The inner wall of the first hollow measurement channel (1) is provided with scribing grooves (8), and the number of scribing grooves (8) is 10 to 20 and they are arranged in an array with equal spacing.
6. The metal triangle ruler structure according to claim 2, characterized in that: The right-angle base (9) has a functional groove (11) on its side.