Measuring and marking tool

Abstract

The utility model discloses a measuring and marking tool which comprises a main body, and the main body comprises a first right-angle side, a second right-angle side and an inclined side. A through arc-shaped guide groove is formed in the main body; the arc-shaped guide groove extends from the first right-angle side to the second right-angle side; an extending part is hinged to the connected end of the first right-angle side and the second right-angle side, a guide locking mechanism is arranged in the middle of the extending part in a penetrating mode, and at least one part of the guide locking mechanism extends into the arc-shaped guide groove, so that the extending part moves in the range of the arc-shaped guide groove and is locked at different positions.

Description

Technical Field

[0001] This application relates to the technical field of surveying and mapping tools, and particularly to a tool for measurement and marking. Background Art

[0002] A triangular ruler is a commonly used surveying and mapping tool with three angles and three sides. Generally, existing triangular rulers do not provide a method to lock the required angle in place, so a large amount of time is wasted in marking multiple identical angles on workpieces.

[0003] Based on this, Chinese Patent Document CN211764552U discloses a triangular ruler convenient for positioning angles, providing angle marking and positioning. Although this improved triangular ruler solves some traditional technical problems, it still has the following defects: For this angle marking and positioning device, the user needs to align the scale lines by himself and then lock them, which is still time-consuming; Secondly, this triangular ruler has a backing plate, and a backing plate is provided on one of the right-angled sides to form a T shape with the main body of the triangular ruler. This method is not suitable for measurement and marking on a flat tabletop. Summary of the Invention

[0004] Based on this, this application provides a tool for measurement and marking to solve one of the above technical problems.

[0005] The technical solution adopted by this application to solve its technical problems is: A tool for measurement and marking, including a main body, the main body includes a first right-angled side, a second right-angled side and an inclined side;

[0006] A through-arc-shaped guiding groove is provided on the main body, and the arc-shaped guiding groove extends from the first right-angled side to the second right-angled side;

[0007] An extension part is hinged at the end where the first right-angled side and the second right-angled side are connected, and a guiding and locking mechanism is arranged through the middle position of the extension part, and at least a part of the guiding and locking mechanism extends into the arc-shaped guiding groove to enable the extension part to move within the range of the arc-shaped guiding groove and be locked at different positions.

[0008] In some embodiments, the arc-shaped guiding groove has two side walls, and a plurality of limiting grooves are arranged on at least one of the side walls, and scale marks correspond to the limiting grooves; the guiding and locking mechanism includes a locking screw and a locking nut, and a limiting structure for engaging with one of the limiting grooves is arranged on the locking screw.

[0009] In some embodiments, limiting grooves are arranged on both side walls of the arc-shaped guiding groove.

[0010] In some embodiments, the limiting structure includes a counterbore formed in the locking screw and a steel ball disposed in the counterbore. A spring is installed between the counterbore and the steel ball to enable the elastic movement of the steel ball. During operation, the steel ball engages with the limiting groove.

[0011] In some embodiments, the upper end of the locking screw is threadedly connected to the locking nut. A pressing plate is provided at the lower end of the locking screw, and the width of the pressing plate is greater than the width of the arc-shaped guiding groove. By rotating the locking nut, the locking screw is driven to extend or shorten. When shortening, the pressing plate presses against the main body to lock the extending portion.

[0012] In some embodiments, a pressing plate guiding groove is provided on the lower end surface of the main body. The pressing plate guiding groove is formed on both sides of the arc-shaped guiding groove, and the pressing plate moves or locks within the pressing plate guiding groove.

[0013] In some embodiments, an upper gasket and a lower gasket are sleeved on the locking screw. The upper gasket is disposed between the extending portion and the locking nut, and the lower gasket is disposed between the extending portion and the main body.

[0014] In some embodiments, the length of the extending portion is greater than the length of the first right-angled side and / or the second right-angled side.

[0015] In some embodiments, a storage groove is further provided on the extending portion. A magnet is disposed in the storage groove, and the storage groove is used to place a drawing pen that can be adsorbed and taken out by the magnet.

[0016] In some embodiments, the thickness of the main body remains substantially the same.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. Through the cooperation of the arc-shaped guiding groove and the guiding locking mechanism, the free movement and locking of the extending portion at different positions can be achieved to facilitate marking and drawing angle lines at different angles.

[0019] 2. Through the limiting groove on the side wall of the arc-shaped guiding groove, the self-locking of the guiding locking mechanism can be achieved, which is convenient for operation.

[0020] 3. In some other embodiments, the thickness of the main body remains consistent to facilitate the use in plane surveying and mapping. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0022] Figure 1 is a schematic structural diagram of the present application.

[0023] Figure 2 is a schematic structural diagram of another angle of the present application.

[0024] Figure 3 is a schematic internal structure diagram of the present application.

[0025] Figure 4 is a schematic diagram of the guiding and locking mechanism of the present application.

[0026] Explanation of the reference numerals in the drawings: 1. Main body, 11. First right-angled side, 12. Second right-angled side, 13. Hypotenuse, 2. Arc-shaped guiding groove, 21. Side wall, 22. Limiting groove, 3. Extension part, 31. Placing groove, 32. Magnet, 33. Drawing pen, 4. Guiding and locking mechanism, 41. Locking screw, 42. Locking nut, 43. Counterbore, 44. Steel ball, 45. Pressure plate, 46. Upper gasket, 47. Lower gasket, 5. Pressure plate guiding groove. Specific embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection of the present application.

[0028] In the embodiments of the present application, please refer to Figures 1-4 as shown, a tool for measurement and marking is provided, including a main body 1, and the main body 1 includes a first right-angled side 11, a second right-angled side 12 and a hypotenuse 13;

[0029] An arc-shaped guiding groove 2 that penetrates is provided on the main body 1, and the arc-shaped guiding groove 2 extends from the first right-angled side 11 to the second right-angled side 12;

[0030] An end where the first right-angled side 11 and the second right-angled side 12 are connected is hinged with an extension part 3. A guiding and locking mechanism 4 is arranged through the middle position of the extension part 3. At least a part of the guiding and locking mechanism 4 extends into the arc-shaped guiding groove 2, so that the extension part 3 can move within the range of the arc-shaped guiding groove 2 and be locked at different positions.

[0031] Next, some preferred / improved embodiments based on the above embodiments will be further described. Any one or a combination of multiple of the following embodiments can be selected.

[0032] In some embodiments, the arc-shaped guiding groove 2 has two side walls 21, and a plurality of limiting grooves 22 are arranged on at least one of the side walls 21. Scale marks correspond to the limiting grooves 22. The guiding and locking mechanism 4 includes a locking screw 41 and a locking nut 42. A limiting structure for engaging with one of the limiting grooves 22 is arranged on the locking screw 41.

[0033] Preferably, limiting grooves 22 are arranged on both side walls 21 of the arc-shaped guiding groove 2.

[0034] Regarding the specific structure of the limiting structure: it includes a counterbore 43 formed in the locking screw 41 and a steel ball 44 arranged in the counterbore 43. A spring (not shown in the figure) is installed between the counterbore 43 and the steel ball 44 to enable the steel ball 44 to move elastically. During operation, the steel ball 44 engages with the limiting groove 22. Based on the above embodiments, the steel balls 44 can also be symmetrically arranged on both sides as appropriate to maintain cooperation with the limiting grooves 22 on both sides of the arc-shaped guiding groove 2 at the same time.

[0035] Furthermore, the upper end of the locking screw 41 is threadedly connected to the locking nut 42. A pressing plate 45 is arranged at the lower end of the locking screw 41. The width of the pressing plate 45 is greater than the width of the arc-shaped guiding groove 2. By rotating the locking nut 42, the locking screw 41 is driven to extend or shorten. When shortening, it will press on the main body 1 through the pressing plate 45 to lock the extension part 3.

[0036] Refer to Figure 2 As shown, in order to maintain the flatness of the lower end surface of the main body 1 and facilitate the locking of the guiding and locking mechanism 4, a pressing plate guiding groove 5 is arranged on the lower end surface of the main body 1. The pressing plate guiding groove 5 is formed on both sides of the arc-shaped guiding groove 2. The pressing plate 45 moves or locks in the pressing plate guiding groove 5.

[0037] Preferably, an upper gasket 46 and a lower gasket 47 are sleeved on the locking screw 41. The upper gasket 46 is placed between the extension part 3 and the locking nut 42, and the lower gasket 47 is placed between the extension part 3 and the main body 1.

[0038] For the convenience of operation and drawing, the length of the extension portion 3 is greater than the length of the first right-angled side 11 and / or the second right-angled side 12.

[0039] In some embodiments, to enhance functionality, a storage groove 31 is further provided on the extension portion 3. A magnet 32 is provided in the storage groove 31, and the storage groove 31 is used to place a drawing pen 33 that can be adsorbed and taken out by the magnet 32.

[0040] Preferably, the thickness of the main body 1 remains substantially the same to facilitate use for surveying and mapping on a plane.

[0041] So far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present application. The foregoing embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A tool for measurement and marking, characterized in that it includes a main body, and the main body includes a first right-angled side, a second right-angled side and a hypotenuse; a through-arc-shaped guiding groove is arranged on the main body, and the arc-shaped guiding groove extends from the first right-angled side to the second right-angled side; at the end where the first right-angled side and the second right-angled side are connected, an extension part is hinged, and a guiding locking mechanism is arranged through the middle position of the extension part, and at least a part of the guiding locking mechanism extends into the arc-shaped guiding groove to enable the extension part to move within the range of the arc-shaped guiding groove and be locked at different positions.

2. The measuring and marking tool according to claim 1, characterized in that, The arc-shaped guiding groove has two side walls, and at least one of the side walls is arranged with a plurality of limiting grooves, and scale marks correspond to the limiting grooves; the guiding locking mechanism includes a locking screw and a locking nut, and a limiting structure for engaging with one of the limiting grooves is arranged on the locking screw.

3. A tool for measurement and marking according to claim 2, characterized in that Limiting grooves are arranged on both side walls of the arc-shaped guiding groove.

4. A measuring and marking tool according to claim 2, wherein The limiting structure includes a counterbore formed in the locking screw and a steel ball arranged in the counterbore, and a spring is installed between the counterbore and the steel ball to enable the steel ball to move elastically; during operation, the steel ball is used to engage with the limiting groove.

5. A measuring and marking tool according to claim 4, wherein The upper end of the locking screw is threadedly connected to the locking nut, and a pressing plate is arranged at the lower end of the locking screw. The width of the pressing plate is greater than the width of the arc-shaped guiding groove. By rotating the locking nut, the locking screw is driven to extend or shorten. When shortening, it will press on the main body through the pressing plate to realize the locking of the extension part.

6. The measuring and marking tool according to claim 5, characterized in that, A pressing plate guiding groove is arranged on the lower end surface of the main body, and the pressing plate guiding groove is formed on both sides of the arc-shaped guiding groove, and the pressing plate moves or locks in the pressing plate guiding groove.

7. A tool for measurement and marking according to claim 5, characterized in that, Upper and lower gaskets are sleeved on the locking screw. The upper gasket is placed between the extension part and the locking nut, and the lower gasket is placed between the extension part and the main body.

8. A measuring and marking tool according to claim 1, wherein, The length of the extension part is greater than the length of the first right-angled side and / or the second right-angled side.

9. A measuring and marking tool according to claim 1, characterized in that, A storage groove is further arranged on the extension part, and a magnet is arranged in the storage groove. The storage groove is used to place a drawing pen that can be adsorbed and taken out by the magnet.

10. A measuring and marking tool according to any one of claims 1-9, characterized in that, The thickness of the main body remains basically the same.

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