Combined vernier angle measuring structure
By using a combined vernier angle measurement structure and angle scale and vernier scale markings, the problem of low accuracy of protractors is solved, and high-precision and portable angle measurement is achieved, which is suitable for pencil cases.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA ESSAY STATIONERY CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-05
AI Technical Summary
Existing protractors have low measurement accuracy, cannot fit into a pencil case, and cannot be accurate to 1°. Furthermore, their accuracy is even worse when the size is reduced, making them unsuitable for drawing high-precision angles.
It adopts a combined vernier angle measurement structure. Through the cooperation of the first and second structures, it achieves accurate angle measurement by using angle scale marks and vernier scale marks. The structure is compact and easy to store.
It improves measurement accuracy, reduces size, makes it easy to carry and store, is suitable for pencil cases, and enhances the ability to draw high-precision angles.
Smart Images
Figure CN224202366U_ABST
Abstract
Description
Technical fields:
[0002] This utility model relates to the field of measuring tool technology, specifically a combined vernier angle measuring structure. Background technology:
[0004] Angle drawing is frequently used in engineering drawings. Currently, it's done by plotting points with a protractor. However, since a standard protractor has a radius of about 8 centimeters and cannot fit inside a pencil case, its accuracy is limited to 1°, resulting in low measurement precision. Improving accuracy requires either indirect angle calculation using the Pythagorean theorem or using a larger protractor, neither of which is practical. Even if a standard protractor were scaled down proportionally to fit inside a pencil case, the accuracy sometimes falls short of 1°. Therefore, the conflict between the aspect ratio and accuracy is the biggest problem with existing protractors. Utility Model Content:
[0006] The purpose of this invention is to provide a combined vernier angle measurement structure to solve the problems mentioned in the background art.
[0007] This utility model is implemented by the following technical solution:
[0008] A combined vernier angle measurement structure includes a plate-shaped first structure and a plate-shaped second structure with their edges in contact. The first structure includes at least three edges connected end-to-end, and the second structure includes at least two edges connected end-to-end. The first structure has a first arc edge, and the second structure has a second arc edge. At least one edge of either the first or second structure is straight. The first and second arc edges have the same curvature. One of the first and second arc edges is a convex arc, and the other is a concave arc. The first structure has at least one concave angle formed by the first arc edge and its adjacent edge. An angle scale mark or an angle vernier scale mark is provided on the surface of the first arc edge, and an angle vernier scale mark or an angle scale mark is provided on the surface of the second arc edge to cooperate with the first arc edge. The angle scale mark is composed of multiple evenly distributed angle scale lines, and the angle vernier scale mark is composed of multiple evenly distributed vernier scale lines. The second arc edge of the second structure and the first arc edge of the first structure are in contact with each other and slide against each other.
[0009] Preferably, the first structure includes three edges connected end to end, all three edges of the first structure are arc-shaped, and a concave angle is formed between the first arc edge and its adjacent arc edge. The first arc edge is a concave arc and its surface is provided with an angle vernier scale mark. The second structure includes two edges connected end to end, the second arc edge of the second structure is a convex arc, the other edge of the second structure is a straight line, and the surface of the second arc edge is provided with an angle scale mark.
[0010] Preferably, the first structure includes three edges connected end to end, two edges of the first structure are arc-shaped, the third edge of the first structure is straight, and a concave angle is formed between the first arc edge and the third edge of the first structure. The first arc edge is a concave arc and its surface is provided with angle scale markings. The second structure includes two edges connected end to end, the second arc edge of the second structure is a convex arc, the other edge of the second structure is straight, and the surface of the second arc edge is provided with angle vernier scale markings.
[0011] Preferably, the first structure includes three edges connected end to end, two of which are arc-shaped, the third edge of which is straight, and a concave angle is formed between the first arc edge and the third edge. The first arc edge is concave and has an angle vernier scale mark on its surface, and the other edge adjacent to the third edge is convex and has an angle scale mark on its surface; the second structure is the same as the first structure.
[0012] Preferably, the first structure includes four edges connected end to end, with only one edge being straight and the rest being curved, and the first curved edge of the first structure forming a concave angle with its adjacent straight edge, and the first curved edge being a convex arc with an angle scale mark on its surface; the second structure includes four edges connected end to end, with only one edge being curved and the rest being straight, and the second curved edge of the second structure being a concave arc, and the surface of the second curved edge having an angle vernier scale mark.
[0013] Preferably, the first structure includes five edges connected end to end. The two adjacent edges of the first structure are arc-shaped, and the remaining edges are straight. The first arc edge and its adjacent straight edge form a concave angle. The first arc edge is a concave arc and has an angle scale mark on its surface. The other arc edge is a convex arc and has an angle vernier scale mark on its surface. The second structure is the same as the first structure.
[0014] Preferably, the longest straight edge of the second structure has the same radius as its first arc edge, and the two straight edges of the second structure away from its first arc edge are perpendicular to each other, and the common endpoint of the two straight edges can be used as the center point of the angle scale mark of the first structure, wherein the angle measurement range of the angle scale mark is 0°-55°.
[0015] Advantages of this invention: This product utilizes three edges and a concave angle, corresponding to different scales. Users can easily switch between two ruler modes to achieve the function of measuring angles with a vernier caliper. Of course, the same function can be achieved by using more edges. However, the core R&D investment of this invention focuses on structural simplification. The simpler the structure of an object, the more integrated it becomes, significantly improving its compatibility with different products. It can be embedded into various other products as much as possible, greatly facilitating secondary development, especially in cases with strict requirements on the number of sides or shape. Particularly noteworthy is the significant improvement in both measurement accuracy and ease of use compared to conventional measuring tools of the same type. This invention adopts the principle of an angle vernier caliper, using the cooperation between the first and second structures. Compared to existing protractors, it improves accuracy while reducing size, making it into a common ruler shape for easy storage in a pencil case. Attached image description:
[0017] Figure 1 This is a reference diagram of the combined state of Embodiment 1;
[0018] Figure 2 This is a reference diagram showing the usage state of Example 1;
[0019] Figure 3 This is a reference diagram of the combined state of Embodiment 2;
[0020] Figure 4 This is a reference diagram showing the usage state of Example 2;
[0021] Figure 5 This is a reference diagram of the combined state of Embodiment 3;
[0022] Figure 6 This is a reference diagram showing the usage state of Example 3;
[0023] Figure 7 This is a reference diagram of the combined state of Embodiment 4;
[0024] Figure 8 This is a reference diagram showing the usage state of Example 4;
[0025] Figure 9 This is a reference diagram of the combined state of Example 5;
[0026] Figure 10 This is a reference for the usage state of Example 5 a° or (90+a)°. Figure 1 ;
[0027] Figure 11 Reference for the 90° usage state of Example 5 Figure 2 ;
[0028] Figure 12 For reference to the usage state of Example 5 a° or (90-a)° Figure 3 .
[0029] In the figure: 1. First structure, 1.1. First arc edge, 2. Second structure, 2.1. Second arc edge, 3. Angle scale mark, 4. Angle vernier scale mark, 5. Concave angle, 6. First reference line, 7. Second reference line. Detailed implementation method:
[0031] 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 protection scope of the present utility model.
[0032] The concave angle formed by the two edges mentioned in this utility model is the simplest form of the description. Any addition of other edges in the middle of the concave angle is considered an equivalent substitution.
[0033] Glossary:
[0034] Edges: In a polyhedron, an edge is a line segment formed by the intersection of two faces. Based on its shape characteristics, edges can be further subdivided into straight edges and curved edges, where a curved edge is a curved edge with continuous edges in a plane and the same center point. In the technical field covered by this patent, edges include, but are not limited to, edge surfaces used in surveying lines, operational applications, etc.
[0035] Angle: An angle is a figure formed by two lines that share a common endpoint. This common endpoint is called the vertex of the angle, and the two lines are called the sides of the angle. In this patented technical solution, a concave angle is formed by two straight sides, or by a straight side and a curved side, or by two curved sides. The tangent of the curved side at the common endpoint serves as one of the rays of the angle. Angles do not include angles of 180°.
[0036] Center point and scale markings: These are physical markers that users determine as references when measuring or observing virtual points, helping to determine the starting point for physical quantities such as length and angle. In the technical field covered by this patent, describing an object refers to the physical markers, while describing a function refers to the virtual point indicated by the physical markers.
[0037] Please see Figure 1-12This utility model provides a technical solution for a combined vernier angle measurement structure:
[0038] Example 1
[0039] See Figure 1 and Figure 2 A combined vernier angle measuring structure includes a plate-shaped first structure 1 and a second structure 2 with their edges attached. The first structure 1 includes three edges connected end to end. All three edges of the first structure 1 are arc-shaped. A concave angle 5 is formed between the first arc edge 1.1 of the first structure and its adjacent arc edge. The first arc edge 1.1 is a concave arc and its surface is provided with an angle vernier scale mark 4. The angle vernier scale mark 4 is composed of multiple evenly distributed vernier scale lines.
[0040] The second structure 2 includes two edges connected end to end. The second arc edge 2.1 of the second structure 2 is a convex arc, and the other edge of the second structure 2 is a straight line. An angle scale mark 3 is provided on the surface of the second arc edge 2.1. The angle scale mark 3 is composed of multiple evenly distributed angle scale lines.
[0041] The second structure 2 and the first structure 1 are placed on the same bearing plane at the same time, and the second arc edge 2.1 of the second structure 2 and the first arc edge 1.1 of the first structure 1 are in contact with each other and slide against each other.
[0042] The method of using the angle drawing in Example 1 is as follows:
[0043] Step 1: Place the first structure 1 and the second structure 2 on the same bearing plane, and align one corner of the second structure 2 with the concave corner 5 on the first structure 1, so that the first arc edge 1.1 of the first structure 1 and the second arc edge 2.1 of the second structure 1 coincide, so that the angle scale mark 3 and the angle vernier scale mark 4 are in contact, and align the two zero-point scale lines, thereby completing the splicing between the first structure 1 and the second structure 2;
[0044] Step 2: Then, use the straight edge of the second structure 2 adjacent to the angle scale mark 3 to draw a straight line as the first reference line 6, and keep the first structure 1 fixed. Then, let the second structure 2 slide along the first arc edge 1.1 of the first structure 1.
[0045] Step 3: By observing the position between the angle vernier scale mark 4 and the angle scale mark 3, the sliding angle of the straight edge in Step 2 is obtained. By sliding to a certain angle position, the second reference line 7 is drawn again using the straight edge in Step 2.
[0046] Step 4: Finally, extend the two drawn straight lines and let them intersect. Then, you can draw the corresponding acute angle according to the angle size.
[0047] Example 2
[0048] See Figure 3 and Figure 4 Compared with Example 1, Example 2 is basically the same in terms of usage. The difference is that the first structure includes three edges that are connected end to end. Two edges of the first structure 1 are arc-shaped, and the third edge of the first structure 1 is straight. A concave angle 5 is formed between the first arc edge 1.1 and the third edge of the first structure 1. The first arc edge 1.1 is a concave arc and its surface is provided with angle scale marks 3. The angle scale marks 3 are composed of multiple evenly distributed angle scale lines.
[0049] The second structure 2 includes two edges connected end to end. The second arc edge 2.1 of the second structure 2 is a convex arc, and the other edge of the second structure 2 is a straight line. An angular vernier scale mark 4 is provided on the surface of the second arc edge 2.1. The angular vernier scale mark 4 is composed of multiple evenly distributed vernier scale lines.
[0050] The second arc edge 2.1 of the second structure 2 and the first arc edge 1.1 of the first structure 1 are in contact with each other and slide against each other.
[0051] Example 3
[0052] See Figure 5 and Figure 6 Compared with Example 1, Example 3 uses the same method of application. The difference lies in that the first structure 1 includes three edges connected end to end. Two edges of the first structure 1 are arc-shaped, and the third edge is straight. A concave angle 5 is formed between the first arc edge 1.1 and the third edge of the first structure 1. The first arc edge 1.1 is a concave arc and its surface is provided with angle vernier scale marks 4, which are composed of multiple evenly distributed angle scale lines. The other edge adjacent to the third edge is a convex arc and its surface is provided with angle scale marks 3, which are composed of multiple evenly distributed vernier scale lines. The second structure 2 is the same as the first structure 1.
[0053] The second arc edge 2.1 of the second structure 2 and the first arc edge 1.1 of the first structure 1 are in contact with each other and slide against each other.
[0054] Example 4
[0055] See Figure 7 and Figure 8Compared with Example 1, Example 4 uses the same method. The difference is that the first structure 1 has four edges connected end to end. Only one edge of the first structure 1 is straight and the other edges are curved. The first curved edge 1.1 of the first structure 1 and its adjacent straight edge form a concave angle 5. The first curved edge 1.1 is a convex arc and its surface is provided with angle scale marks 3, which are composed of multiple evenly distributed angle scale lines. The second structure 2 has four edges connected end to end. Only one edge of the second structure 2 is curved and the other edges are straight. The second curved edge 2.1 of the second structure 2 is a concave arc and its surface is provided with angle vernier scale marks 4, which are composed of multiple evenly distributed vernier scale lines.
[0056] The second arc edge 2.1 of the second structure 2 and the first arc edge 1.1 of the first structure 1 are in contact with each other and slide against each other.
[0057] Example 5
[0058] See Figures 9-12 Compared with Example 1, Example 5 differs in that the first structure 1 includes five edges connected end to end. The two adjacent edges of the first structure 1 are arc-shaped, while the remaining edges are straight. The first arc edge 1.1 of the first structure 1 and its adjacent straight edge form a concave angle 5. The first arc edge 1.1 is a concave arc with an angle scale mark 3 on its surface. The other arc edge (the second arc edge 2.1) is a convex arc with an angle vernier scale mark 4 on its surface. The angle scale mark 3 is composed of multiple evenly distributed angle scale lines, and the angle vernier scale mark 4 is composed of multiple evenly distributed vernier scale lines. The second structure 2 is the same as the first structure 1.
[0059] In this structure, the longest straight edge of the second structure 2 has the same radius as its first arc edge 1.1. The two straight edges of the second structure 2 that are far from its first arc edge 1.1 are perpendicular to each other, and the common endpoint of the two straight edges can be used as the center point of the angle scale mark 3 of the first structure 1. The angle scale mark 3 has an angle measurement range of 0°-55°, and the angle vernier scale mark 4 has an accuracy of 0.1 degrees.
[0060] Example 5: The method of using the corner drawing is as follows:
[0061] Step 1: Place the first structure 1 and the second structure 2 on the same bearing plane without overlapping each other. Abut one corner of the second structure 2 with the concave corner 5 on the first structure 1, so that the first arc edge 1.1 of the first structure 1 and the second arc edge 2.1 of the second structure coincide, so that the angle scale mark 3 and the angle vernier scale mark 4 are in contact, and the two zero-point scale lines are aligned, thereby completing the splicing between the first structure 1 and the second structure 2.
[0062] Step 2: Then, using the straight edge adjacent to the vernier scale mark 4 of the second structure 2, draw a straight line as the first reference line 6, and keep the first structure 1 fixed. Then, let the second structure 2 slide along the first arc edge 1.1 of the first structure 1.
[0063] Step 3: By observing the position between the vernier mark 4 and the angle mark 3, the sliding angle of the straight line edge in Step 2 is obtained. By sliding to a certain angle position, the second reference line 7 is drawn again using the straight line edge in Step 2. Finally, the two drawn straight lines are extended and intersected, and the corresponding acute angle α can be drawn according to the angle size. That is, the angle between the first reference line 6 and the second reference line 7 can be drawn within the range of 0°-45°.
[0064] Step 4: Since the radius of the straight edge adjacent to the fitting edge of the second structure 2 is equal to that of its first arc edge 1.1, and the two straight edges of the second structure 2 away from its first arc edge 1.1 are perpendicular to each other, and the common endpoint of the two straight lines can be used as the center point of the angle scale mark 3 of the first structure 1, based on step 3, if the second reference line 7 is drawn from another straight edge that is perpendicular to the straight edge in step 2, and the two drawn straight lines are extended and intersected, then the corresponding obtuse angle, i.e., 90+a, can be drawn according to the angle size, that is, the angle between the first reference line 6 and the second reference line 7 can be drawn within the range of 90°-135°.
[0065] Step 5: Based on Step 2, if the first reference line 6 is drawn from another straight line edge that is perpendicular to the straight line edge in Step 2, and the first structure 1 is kept fixed, then the second structure 2 is slid along the first arc edge 1.1 of the first structure 1. By observing the position between the angle vernier scale mark 4 and the angle scale mark 3, the sliding angle of the straight line edge in Step 2 can be obtained. By sliding to a certain angle position, the second reference line 7 is drawn again using the straight line edge in Step 2. Finally, the two drawn straight lines are extended and intersected, and the corresponding acute angle 90-a can be drawn according to the angle size, that is, the angle between the first reference line 6 and the second reference line 7 is drawn within the range of 45°-90°.
[0066] In summary, by using Example 5 for angle drawing, it is possible to draw within the range of 0-135°.
[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A combined vernier angle measuring structure, characterized in that: The system includes a plate-shaped first structure and a plate-shaped second structure with their edges fitting together. The first structure includes at least three edges connected end-to-end, and the second structure includes at least two edges connected end-to-end. The first structure has a first arc edge, and the second structure has a second arc edge. At least one edge in either the first or second structure is straight. The first and second arc edges have the same curvature. One of the first and second arc edges is a convex arc, and the other is a concave arc. The first structure has at least one concave angle formed by the first arc edge and its adjacent edge. An angle scale mark or an angle vernier scale mark is provided on the surface of the first arc edge, and an angle vernier scale mark or an angle scale mark is provided on the surface of the second arc edge to cooperate with the first arc edge. The angle scale mark is composed of multiple evenly distributed angle scale lines, and the angle vernier scale mark is composed of multiple evenly distributed vernier scale lines. The second arc edge of the second structure and the first arc edge of the first structure fit together and slide against each other.
2. The combined vernier angle measuring structure according to claim 1, characterized in that: The first structure includes three edges connected end to end. All three edges of the first structure are arc-shaped. The first arc edge of the first structure and its adjacent arc edge form a concave angle. The first arc edge is a concave arc and its surface is marked with an angle vernier scale. The second structure includes two edges connected end to end. The second arc edge of the second structure is a convex arc. The other edge of the second structure is a straight line. The surface of the second arc edge is marked with an angle scale.
3. The combined vernier angle measuring structure according to claim 1, characterized in that: The first structure includes three edges connected end to end. Two edges of the first structure are arc-shaped, and the third edge of the first structure is straight. A concave angle is formed between the first arc edge and the third edge of the first structure. The first arc edge is a concave arc and has an angle scale mark on its surface. The second structure includes two edges connected end to end. The second arc edge of the second structure is a convex arc, and the other edge of the second structure is straight. An angle vernier scale mark is provided on the surface of the second arc edge.
4. The combined vernier angle measuring structure according to claim 1, characterized in that: The first structure includes three edges connected end to end. Two of the edges of the first structure are arc-shaped, and the third edge of the first structure is straight. A concave angle is formed between the first arc edge and the third edge of the first structure. The first arc edge is a concave arc with an angle vernier scale mark on its surface. The other edge adjacent to the third edge is a convex arc with an angle scale mark on its surface. The second structure is the same as the first structure.
5. The combined vernier angle measuring structure according to claim 1, characterized in that: The first structure includes four edges connected end to end. Only one edge of the first structure is straight, while the other edges are curved. The first curved edge of the first structure forms a concave angle with its adjacent straight edge. The first curved edge is a convex arc, and its surface is marked with an angle scale. The second structure includes four edges connected end to end. Only one edge of the second structure is curved, while the other edges are straight. The second curved edge of the second structure is a concave arc, and its surface is marked with an angle vernier scale.
6. The combined vernier angle measuring structure according to claim 1, characterized in that: The first structure includes five edges connected end to end. The two adjacent edges of the first structure are arc-shaped, and the remaining edges are straight. The first arc edge and its adjacent straight edge form a concave angle. The first arc edge is a concave arc with an angle scale mark on its surface. The other arc edge is a convex arc with an angle vernier scale mark on its surface. The second structure is the same as the first structure.
7. The combined vernier angle measuring structure according to claim 6, characterized in that: The longest straight edge of the second structure has the same radius as its first arc edge. The two straight edges of the second structure that are far from its first arc edge are perpendicular to each other, and the common endpoint of the two straight edges can be used as the center point of the angle scale mark of the first structure. The angle measurement range of the angle scale mark is 0°-55°.