A rigid ruler
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU QIUSHI TECH CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-19
AI Technical Summary
Existing rulers are difficult to handle when they are in close contact with the desktop, and there is a risk of misoperation and slippage, especially when there are no obvious markers at the cut corners. In addition, the graduation lines are easily worn or contaminated.
The ruler features beveled surfaces and grooves along its front and back edges. The beveled surfaces create a gap with the tabletop for easy flipping, while the grooves serve as indicators to prevent accidental operation. The rounded corners prevent scratches, and the double-sided scale lines accommodate different hand types. The scale line distribution design extends the ruler's lifespan.
It enables convenient handling, avoids accidental operation and slippage, prevents scratches, adapts to the needs of different users, and extends service life.
Smart Images
Figure CN224375198U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a ruler, and more particularly to a rigid ruler. Background Technology
[0002] The ruler body of existing rigid rulers is generally a flat plate. The ruler body is convenient to fit against various planes for measurement. However, when the ruler body is placed on a flat surface such as a table, the ruler body fits tightly against the surface. Users often have to move the ruler body to the edge of the table to easily flip it over and pick it up, which is time-consuming, laborious, and inconvenient to use.
[0003] In response, Chinese utility model patent document CN202022319291.4 describes a ruler that is easy to handle, namely a rigid ruler. It features a chamfered edge (beveled surface) along its edge. When the ruler is placed on a flat surface such as a table, a gap is formed between the chamfered surface and the surface. Pressing the back of the chamfer allows the ruler to be lifted, making it easy to flip and pick up. However, it still has the following technical defects:
[0004] Considering that the cut surface of the ruler faces a flat surface such as a table, and there are no obvious markings on the back of the cut, users are prone to misoperation when picking up the ruler, i.e., failing to press the back of the cut.
[0005] In addition, when pressing the back of the cut corner to lift the ruler, and then flipping the ruler over and picking it up, the flat surface of the ruler is prone to slipping.
[0006] Therefore, this utility model is proposed. Summary of the Invention
[0007] The purpose of this invention is to provide a rigid ruler that addresses the shortcomings of the prior art by providing a ruler that is easy to take when it fits tightly against a flat surface such as a desktop, while also minimizing the risk of misoperation.
[0008] To achieve the above objectives, the present invention provides a rigid ruler, comprising a ruler body, wherein the edges of the front and back sides of the ruler body are provided with beveled surfaces and grooves, the beveled surfaces extend along their corresponding edges, and the beveled surfaces on the front and the grooves on the back, as well as the beveled surfaces on the back and the grooves on the front, correspond one-to-one and are located on the same edge.
[0009] In the above structural design, by setting a beveled surface (including the beveled surface on the front and back) on the edge of the ruler, a gap is formed between the corresponding beveled surface and the flat surface, whether the front or back of the ruler is placed on a table or other flat surface. By pressing the back of the beveled surface, the ruler can be lifted up, making it easier to flip the ruler over and pick it up.
[0010] In addition, the groove on the front of the ruler can serve as an indicator (marker) for the beveled surface on the back, and similarly, the groove on the back of the ruler can serve as an indicator for the beveled surface on the front, prompting the user to avoid accidental operation. At the same time, it provides relatively better frictional contact when the user presses, thereby minimizing the possibility of slippage.
[0011] Furthermore, in the structural design of the aforementioned ruler, the groove is preferably strip-shaped and extends along its edge. This not only provides a good indication effect but also increases the groove area, allowing the user's hand to make full and effective contact with the groove when pressing the ruler.
[0012] Furthermore, in the aforementioned rigid ruler, the edges and corners of the ruler body are preferably rounded, and the radius of the rounded surface is ≥3 mm. During use, carrying, or storage, especially in the hands of students, care should be taken to avoid scratching skin (especially hands and arms) or tearing paper, books, or even school bags.
[0013] Furthermore, when the aforementioned rigid ruler is a right-angled triangle ruler, its body preferably has a right-angled triangular through-hole. The pair of right-angled sides of the through-hole are parallel to the pair of right-angled sides of the ruler body, and their right-angle vertices are on the same straight line. The shape of the right-angled triangular through-hole is similar to the ruler body itself, allowing users to quickly draw right angles, or even right-angled triangles. Furthermore, the hypotenuse of the right-angled triangular through-hole is preferably wavy, again to facilitate quick drawing of wavy curves by the user.
[0014] Furthermore, in the aforementioned rigid ruler, scale lines are preferably provided on both the front and back of the ruler body to facilitate users with different dominant hands. For left-handed users, when using a regular ruler (with scale lines only on the top of the front), the scale lines are pressed under the ruler, making them difficult to see and the numbers are easily upside down. By also providing scale lines on the back, and usually printing the numbers on the "bottom" edge of the back (relative to the front view), when a left-handed user flips the ruler over, the scale lines are on top and the numbers are upright, making reading very convenient.
[0015] In addition, the graduation lines on the edge of the ruler are easily worn down by the pen tip, erased by an eraser, or smudged by ink / pencil powder during use (especially when drawing lines with a pen). Having graduation lines on both sides means that when one side is severely worn or becomes blurred, you can flip it over and use the other side, which effectively extends the effective lifespan of the ruler.
[0016] Compared with existing technologies, the ruler provided by this invention has the following technical advantages: It is easy to handle when the ruler body fits snugly against a flat surface such as a table, and it also minimizes the risk of accidental operation and slippage during handling. Furthermore, during use, carrying, or storage, especially in the hands of students, it prevents scratches to the skin (particularly hands and arms) or tears to paper, books, or even school bags. Users can use it to quickly draw wavy curves, right angles, and even right triangles. The ruler body has graduation lines on both the front and back to accommodate users with different hand preferences. Therefore, this invention improves the performance of the ruler. Attached Figure Description
[0017] Figure 1 This is a structural diagram of a rigid ruler;
[0018] Figure 2 yes Figure 1 Schematic diagram of the end face structure of a medium-hardness ruler;
[0019] Figure 3 This is a schematic diagram of the structure of a hard right-angled triangle. Figure 1 ;
[0020] Figure 4 This is a schematic diagram of the structure of a hard right-angled triangle. Figure 2 ;
[0021] Figure 5 This is a schematic diagram of the structure of a rigid isosceles triangle. Figure 1 ;
[0022] Figure 6 This is a schematic diagram of the structure of a rigid isosceles triangle. Figure 2 ;
[0023] Figure 7 This is a schematic diagram of another type of rigid ruler.
[0024] In the diagram: ruler body 1, oblique cut surface 1-1, groove 1-2, right-angled triangular through hole 1-3. Detailed Implementation
[0025] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0026] like Figure 1 and Figure 2As shown, in one embodiment of the present invention, a rigid ruler is provided, including a ruler body 1. The edges of the front and back sides of the ruler body 1 are provided with a beveled surface 1-1 and a groove 1-2. The beveled surface 1-1 extends along its corresponding edge. The beveled surface 1-1 on the front side and the groove 1-2 on the back side, as well as the beveled surface 1-1 on the back side and the groove 1-2 on the front side, are all corresponding to each other and located on the same edge.
[0027] In this embodiment, the grooves 1-2 are strip-shaped and extend along their edges.
[0028] In this embodiment, all edges of the ruler 1 are rounded, and the radius of the rounded surface is ≥3 mm. During use, carrying, or storage, especially in the hands of students, care should be taken to avoid scratching the skin (especially hands and arms) or tearing paper, books, or even school bags.
[0029] Of course, the ruler in this invention can also be of other types. For example, as a second embodiment of this invention, such as... Figure 3 and Figure 4 As shown in the illustration, this embodiment provides a hard right-angle triangle ruler. The two right-angled edges on the front of the ruler body 1 are each provided with a chamfered surface 1-1 and a groove 1-2. Similarly, the two right-angled edges on the back are each provided with a groove 1-2, and the chamfered edge is provided with a chamfered surface 1-1. Likewise, in this embodiment, the chamfered surface 1-1 and the groove 1-2 extend along their corresponding edges.
[0030] In addition, this embodiment provides a right-angled triangle ruler, the ruler body 1 of which is provided with a right-angled triangular through hole 1-3. The pair of right-angled sides of the right-angled through hole 1-3 are parallel to the pair of right-angled sides of the ruler body 1, and the right-angled vertices of both are on the same straight line. The shape of the right-angled triangular through hole 1-3 is similar to that of the ruler body 1 itself, allowing the user to quickly draw right angles, or even right-angled triangles. The hypotenuse of the right-angled triangular through hole 1-3 is a wavy curve, similarly facilitating the user's ability to quickly draw wavy curves.
[0031] Similarly, in this embodiment, the edges of the ruler body 1 are all rounded surfaces, and the radius of the rounded surfaces is ≥3 mm.
[0032] For example, such as Figure 5 and Figure 6 As shown in the figure, as a third embodiment of the present invention, this embodiment also provides a rigid isosceles triangle.
[0033] In addition, as a fourth embodiment of this utility model, such as Figure 7As shown in the figure, the rigid ruler provided in this embodiment has a general structure consistent with the first embodiment described above. However, in this embodiment, the ruler body 1 is provided with scale lines on both the front and back sides to facilitate users with different dominant hands. For left-handed users, when using a regular ruler (with scale lines only on the front), the scale lines are pressed under the ruler, making them difficult to see and the numbers are easily upside down. Scale lines are also provided on the back side, and the numbers are usually printed on the "lower" edge of the back side (relative to the front view). In this way, when a left-handed user flips the ruler body 1 over, the scale lines are on top and the numbers are upright, making it very convenient to read.
[0034] Additionally, the graduation lines on the edge of the ruler are easily worn down by the pen tip, erased by an eraser, or smudged by ink / pencil powder during use (especially when drawing lines with a pen). Having graduation lines on both sides means that when one side is severely worn or becomes blurred, the other side can be flipped over, effectively extending the effective lifespan of the ruler.
[0035] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.
Claims
1. A rigid ruler comprising a ruler body, characterised in that: The ruler body has beveled surfaces and grooves on both the front and back edges. The beveled surfaces extend along their corresponding edges. The beveled surfaces on the front and the grooves on the back, as well as the beveled surfaces on the back and the grooves on the front, correspond one-to-one and are located on the same edge.
2. A rigid ruler according to claim 1, wherein: The groove is strip-shaped and extends along its edge.
3. A rigid ruler according to claim 1 or 2, wherein: The edges of the ruler are all rounded, and the radius of the rounded surface is ≥3 mm.
4. A rigid ruler according to claim 1 or 2, wherein: The ruler is a right-angled triangle ruler with a right-angled triangle-shaped through hole on its body. The pair of right-angled sides of the right-angled triangle-shaped through hole are parallel to the pair of right-angled sides of the ruler body, and the right-angled vertices of the two are on the same straight line.
5. A rigid ruler according to claim 3, wherein: The ruler is a right-angled triangle ruler with a right-angled triangle-shaped through hole on its body. The pair of right-angled sides of the right-angled triangle-shaped through hole are parallel to the pair of right-angled sides of the ruler body, and the right-angled vertices of the two are on the same straight line.
6. A rigid ruler according to claim 4, wherein: The hypotenuse of the right-angled triangular through hole has a wavy curve shape.
7. A rigid ruler according to claim 5, wherein: The hypotenuse of the right-angled triangular through hole has a wavy curve shape.
8. A rigid ruler according to claim 6, wherein: The ruler has scale lines on both the front and back sides.
9. A rigid ruler according to claim 7, wherein: The ruler has scale lines on both the front and back sides.