Angle ruler calibration device

Abstract

The utility model relates to the technical field of bevel protractor calibration, in particular to a bevel protractor calibration device which comprises a first measuring scale, a digital display screen is arranged on the front face of the first measuring scale, a spirit bubble is arranged inside the left end of the first measuring scale, a second measuring scale is installed at the right end of the first measuring scale, and the second measuring scale is provided with a liquid crystal display screen. A to-be-measured bevel protractor is placed on the top surface of the first measuring scale; a movable groove is formed in the surface of the second measuring scale, and a sliding groove is formed in the top surface of the first measuring scale; the first measuring scale is provided with a positioning structure, and the positioning structure comprises a fixing plate. According to the utility model, the movable plate is matched with the fixed plate, so that the to-be-measured bevel protractor can be clamped and fixed, the to-be-measured bevel protractor can stably stand on the top surface of the first measuring ruler, and during operation, the angle of the to-be-measured bevel protractor can be measured only by rotating the second measuring ruler and enabling the second measuring ruler to be attached to the upper end of the to-be-measured bevel protractor.

Description

Technical Field

[0001] This utility model relates to the field of angle ruler calibration technology, specifically to an angle ruler calibration device. Background Technology

[0002] A digital angle ruler is a ruler with a digital display screen for measuring angles. It is used to measure and draw angles and is usually made of rotatable transparent plastic or metal material with graduations. The method of using a digital angle ruler is very simple: place it at the desired angle and then rotate it to a right angle or other corresponding angular position. It is commonly used in fields such as architecture, machinery, and drafting, and can efficiently and accurately measure and draw angles. Some angle rulers are also equipped with auxiliary reading lines, making it easier for users to obtain accurate measurement results.

[0003] In response, Chinese patent application number CN202420279459.9 discloses a digital angle ruler calibration device, including a first measuring ruler with a calibration groove at its bottom. An angle measuring box is fixedly connected to the front of the first measuring ruler, a digital display body is fixedly connected to one side of the angle measuring box, a power supply component is movably connected to the top of the digital display body, a digital display motherboard is fixedly connected inside the digital display body, an angle measuring device is fixedly connected inside the angle measuring box, a measuring shaft is fixedly connected to the drive end of the angle measuring device, a second measuring ruler is movably connected to the first measuring ruler through the measuring shaft, and a calibration block is fixedly connected to the front of the second measuring ruler. This utility model, through the calibration groove and calibration block, allows for the calibration of the digital angle ruler without placing it flat on a plane, making the calibration of the digital angle ruler more accurate.

[0004] The device calibrates the angle ruler by setting two sets of relatively rotatable measuring rulers. However, in the actual calibration process, since there is no connection between the angle ruler and the measuring ruler, the staff needs to manually support the angle ruler and take measurements to avoid the angle ruler shifting in the front and back directions, which is inconvenient to operate.

[0005] Therefore, in order to solve the above problems, an angle ruler calibration device is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide an angle ruler calibration device to solve the problem mentioned in the background art that the existing device calibrates the angle ruler by setting two sets of relatively rotatable measuring rulers. However, in the actual calibration process, since there is no connection between the angle ruler and the measuring ruler, the staff needs to manually support the angle ruler and measure it to avoid the angle ruler from shifting in the front and back directions, which is inconvenient to operate.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an angle ruler calibration device, comprising: a first measuring ruler, a digital display screen on the front of the first measuring ruler, a bubble level inside the left end of the first measuring ruler, a second measuring ruler installed on the right end of the first measuring ruler, and an angle ruler to be measured placed on the top surface of the first measuring ruler.

[0008] The surface of the second measuring ruler is provided with a movable groove, and the top surface of the first measuring ruler is provided with a sliding groove;

[0009] The first measuring ruler is equipped with a positioning structure, which includes a fixed plate. The fixed plate is fixedly installed on the front end of the top of the first measuring ruler. A movable plate is movably installed on the rear side of the fixed plate. A slider is fixedly connected to the bottom surface of the movable plate. A magnetic block is provided on the inner side of the movable plate. An abutment plate is rotatably connected to the inner side of the movable groove.

[0010] Preferably, the fixed plate and the movable plate cooperate with each other, and the top surfaces of the fixed plate and the movable plate are flush with the top surface of the first measuring ruler.

[0011] Preferably, both the slider and the groove have a "T" shaped cross-section, and the slider is slidably mounted on the inner side of the groove.

[0012] Preferably, the angle gauge to be measured is located between the fixed plate and the movable plate.

[0013] Preferably, the magnetic block is magnetically connected to the fixing plate.

[0014] Preferably, the surface of the abutment plate is flush with the side wall of the second measuring ruler, and the abutment plate is attached to the angle ruler to be measured.

[0015] Compared with the prior art, the beneficial effects of this utility model are: by setting a movable plate in conjunction with a fixed plate, the angle ruler to be measured can be clamped and fixed, so that the angle ruler to be measured can stand stably on the top surface of the first measuring ruler. During operation, simply rotate the second measuring ruler so that the second measuring ruler is in contact with the upper end of the angle ruler to be measured, and the angle of the angle ruler to be measured can be measured.

[0016] This invention utilizes a positioning structure. Pulling out the second measuring scale allows it to rotate on top of the first measuring scale. Pulling the movable plate causes the slider to slide within a groove, moving the movable plate away from the fixed plate. This creates a gap between the fixed and movable plates. The lower end of the angle gauge to be measured is placed between the fixed and movable plates, ensuring it is flush with the top surface of the first measuring scale. The right end of the angle gauge is exposed on the right side of the positioning structure. Releasing the movable plate causes the magnetic block to magnetically attract the fixed plate, pulling the movable plate closer to the fixed plate. The movable plate then engages with the fixed plate. The plate can hold and fix the angle ruler to be measured, keeping the first measuring ruler and the angle ruler to be measured parallel in the vertical direction. Then, pull the abutment plate to make the abutment plate deflect in the movable groove, keeping the abutment plate perpendicular to the second measuring ruler. Then pull the second measuring ruler to make the second measuring ruler and the first measuring ruler close together. When the second measuring ruler moves, it will drive the abutment plate closer to the upper end of the angle ruler to be measured, so that the surface of the abutment plate is in contact with the angle ruler to be measured. Then, operate the digital display screen to complete the calibration of the device. The whole process does not require holding the angle ruler to be measured, ensuring the convenience of device calibration. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the separation structure between the angle ruler to be measured and the first measuring ruler of this utility model;

[0019] Figure 3 This is an exploded rear view of the first measuring ruler and positioning structure of this utility model;

[0020] Figure 4 This is a side view of the structure of the fixed plate, movable plate and abutment plate of this utility model.

[0021] In the diagram: 1. First measuring ruler; 11. Digital display screen; 12. Bulb spirit level; 13. Second measuring ruler; 14. Movable groove; 15. Angle ruler to be measured; 16. Slide groove; 2. Positioning structure; 21. Fixed plate; 22. Movable plate; 23. Sliding block; 24. Magnetic block; 25. Abutment plate. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-4An embodiment of an angle ruler calibration device provided by this utility model:

[0024] The first measuring ruler 1, digital display screen 11, bubble level 12, second measuring ruler 13, and angle ruler 15 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0025] An angle ruler calibration device includes: a first measuring ruler 1, a digital display screen 11 on the front of the first measuring ruler 1, a bubble level 12 inside the left end of the first measuring ruler 1, a second measuring ruler 13 installed on the right end of the first measuring ruler 1, and an angle ruler 15 to be measured placed on the top surface of the first measuring ruler 1.

[0026] The surface of the second measuring ruler 13 is provided with a movable groove 14, and the top surface of the first measuring ruler 1 is provided with a sliding groove 16.

[0027] A positioning structure 2 is installed on the first measuring ruler 1. The positioning structure 2 includes a fixed plate 21, which is fixedly installed on the front end of the top of the first measuring ruler 1. A movable plate 22 is movably installed on the rear side of the fixed plate 21. A slider 23 is fixedly connected to the bottom surface of the movable plate 22. A magnetic block 24 is provided on the inner side of the movable plate 22. An abutment plate 25 is rotatably connected to the inner side of the movable groove 14. The movable plate 22 cooperates with the fixed plate 21 to clamp and fix the angle ruler 15 to be measured, so that the angle ruler 15 to be measured can stand stably on the top surface of the first measuring ruler 1. During operation, simply rotate the second measuring ruler 13 so that the second measuring ruler 13 fits against the upper end of the angle ruler 15 to be measured, and the angle of the angle ruler 15 to be measured can be measured.

[0028] Furthermore, the fixed plate 21 and the movable plate 22 cooperate with each other, the top surfaces of the fixed plate 21 and the movable plate 22 are flush with the top surface of the first measuring ruler 1, and the angle between the fixed plate 21 and the movable plate 22 and the second measuring ruler 13 is consistent with the angle between the second measuring ruler 13 and the first measuring ruler 1.

[0029] Furthermore, both the slider 23 and the slide groove 16 have a "T" shaped cross-section. The slider 23 is slidably installed on the inner side of the slide groove 16. The slider 23, together with the slide groove 16, serves as a guide and limit for the movable plate 22 on the top surface of the first measuring ruler 1.

[0030] Furthermore, the angle gauge 15 to be measured is located between the fixed plate 21 and the movable plate 22, and the fixed plate 21 and the movable plate 22 can limit the angle gauge 15 to be measured on both sides.

[0031] Furthermore, the magnetic block 24 is magnetically connected to the fixed plate 21. The fixed plate 21, together with the movable plate 22, can clamp and fix the angle ruler 15 to be measured, ensuring that the angle ruler 15 to be measured is parallel to the first measuring ruler 1 in the vertical direction.

[0032] Furthermore, the surface of the abutment plate 25 is flush with the side wall of the second measuring ruler 13. The abutment plate 25 is attached to the angle ruler 15 to be measured. When the abutment plate 25 is attached to the angle ruler 15 to be measured, the included angle between the first measuring ruler 1 and the second measuring ruler 13 can be determined.

[0033] Working principle: In use, the second measuring ruler 13 can be pulled out, allowing it to rotate on the first measuring ruler 1. Pulling the movable plate 22 causes the slider 23 to slide within the groove 16, moving the movable plate 22 away from the fixed plate 21. This creates a gap between the fixed plate 21 and the movable plate 22. The lower end of the angle ruler 15 to be measured is placed between the fixed plate 21 and the movable plate 22, ensuring that the lower end of the angle ruler 15 is in contact with the top surface of the first measuring ruler 1, and that the right end of the angle ruler 15 is exposed on the right side of the positioning structure 2. Then, the movable plate 22 is released, and the magnetic block 24 magnetically attracts the fixed plate 21. The magnetic block 24 then moves the movable plate 22 closer to the fixed plate 21. The movable plate 22, in conjunction with... The fixing plate 21 can clamp and fix the angle ruler 15 to be measured, keeping the first measuring ruler 1 and the angle ruler 15 to be measured parallel in the vertical direction. Then, pull the abutment plate 25, so that the abutment plate 25 deflects in the movable groove 14, keeping the abutment plate 25 perpendicular to the second measuring ruler 13. Then pull the second measuring ruler 13, so that the second measuring ruler 13 and the first measuring ruler 1 close together. When the second measuring ruler 13 moves, it will drive the abutment plate 25 to approach the upper end of the angle ruler 15 to be measured, so that the surface of the abutment plate 25 is in contact with the angle ruler 15 to be measured. Then, operate the digital display screen 11 to complete the calibration of the device. The whole process does not require holding the angle ruler 15 to be measured, ensuring the convenience of device calibration.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. An angle ruler calibration device, comprising: The first measuring ruler (1) has a digital display screen (11) on its front side, a bubble level (12) inside the left end of the first measuring ruler (1), a second measuring ruler (13) installed on the right end of the first measuring ruler (1), and an angle ruler (15) to be measured placed on the top surface of the first measuring ruler (1). Its features are: The surface of the second measuring ruler (13) is provided with a movable groove (14), and the top surface of the first measuring ruler (1) is provided with a sliding groove (16). A positioning structure (2) is installed on the first measuring ruler (1). The positioning structure (2) includes a fixed plate (21). The fixed plate (21) is fixedly installed on the front end of the top of the first measuring ruler (1). A movable plate (22) is movably installed on the rear side of the fixed plate (21). A slider (23) is fixedly connected to the bottom surface of the movable plate (22). A magnetic block (24) is provided on the inner side of the movable plate (22). An abutment plate (25) is rotatably connected to the inner side of the movable groove (14).

2. The angle ruler calibration device according to claim 1, characterized in that: The fixed plate (21) and the movable plate (22) cooperate with each other, and the top surfaces of the fixed plate (21) and the movable plate (22) are flush with the top surface of the first measuring ruler (1).

3. The angle ruler calibration device according to claim 1, characterized in that: The cross-sections of both the slider (23) and the groove (16) are "T" shaped, and the slider (23) is slidably installed on the inner side of the groove (16).

4. The angle ruler calibration device according to claim 1, characterized in that: The angle ruler (15) to be measured is located between the fixed plate (21) and the movable plate (22).

5. The angle ruler calibration device according to claim 1, characterized in that: The magnetic block (24) is magnetically connected to the fixing plate (21).

6. The angle ruler calibration device according to claim 1, characterized in that: The surface of the abutment plate (25) is flush with the side wall of the second measuring ruler (13), and the abutment plate (25) is attached to the angle ruler (15) to be measured.

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