An interior and exterior angle measuring device

Abstract

This utility model relates to the field of building surveying tools, and provides an interior and exterior angle measuring device, including several interconnected protractors, a first connector inserted into two adjacent protractors, a fastener for connecting the protractors and the first connector, and a lock nut screwed onto the fastener. The first connector has a first insertion portion, and the protractors have a first socket portion formed therein. The first insertion portion slides along the first socket portion to allow the multiple protractors to extend and retract for adjustment. The exterior angle of the interior and exterior angle measuring devices is adjustable. This utility model's protractor is extendable and adjustable, and can be adjusted to its minimum angle for easy carrying by construction personnel. Furthermore, this interior and exterior angle measuring device is a single unit, suitable for direct measurement of both interior and exterior angles, eliminating the need to carry multiple dedicated measuring devices and improving the convenience of measurement work.

Description

Technical Field

[0001] This utility model relates to the field of building surveying tools, and in particular to an interior and exterior angle measuring device. Background Technology

[0002] In building construction, protractors are used to measure various angles in buildings, such as the slope of a roof and the tilt angle of a wall. When installing doors and windows, it is even more necessary to measure the angles of reserved columns or beams. Especially for corner windows and living room windows with curved corners, it is necessary to measure the angles of various corners. Existing conventional protractors have obvious limitations. They can only measure external angles and cannot measure internal angles. In actual construction scenarios, due to site conditions such as wall obstruction and narrow space, traditional protractors are often difficult to operate and require multiple adjustments to the placement angle. They are also prone to reading errors due to line of sight deviation or tool shaking, which seriously affects the measurement accuracy.

[0003] For the same corner point, the interior angle may not be indoors and the exterior angle may not be outdoors. If on-site measurement allows, it is usually necessary to measure both the interior and exterior angles of the corner point at the same time. By calibrating the two angle values, that is, by combining measurement and calculation, measurement errors can be reduced.

[0004] Because conventional protractors are based on the central angle principle, they are only suitable for measuring exterior angles from 0° to 180°. Interior angles are usually greater than 180°, and values ​​can only be obtained by estimation or cannot be read at all. Existing methods use exterior angle conversion or break down interior angles into measurable exterior angle combinations. Both of these methods cause difficulties in architectural engineering surveying, increase measurement costs, and prolong measurement time. Utility Model Content

[0005] In view of this, the present invention aims to provide an interior and exterior angle measuring device that can simultaneously and accurately measure the interior and exterior angles of a building, and is easy to carry.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] An interior and exterior angle measuring device includes a plurality of protractors connected together, a first connector inserted into two adjacent protractors, a fastener for connecting the protractors and the first connector, and a lock nut screwed onto the fastener.

[0008] The first connector is provided with a first insertion part, and the protractor is formed with a first socket part. The first insertion part slides along the first socket part so that the multiple protractors can be extended and retracted for adjustment. The outer angle of the inner and outer angle measuring device is adjustable.

[0009] Furthermore, the protractor is also provided with a second socket, and a second connector is also provided on the side of the protractor away from the first connector. The second connector is provided with a second insertion part, and the second insertion part slides along the second socket.

[0010] The second socket portion is staggered with the first socket portion.

[0011] Furthermore, the first connector and the second connector have the same structure;

[0012] The first socket portion and the second socket portion are staggered along the radial direction of the protractor;

[0013] The first sockets of two adjacent protractors are connected together, or the second sockets of two adjacent protractors are connected together;

[0014] There is an overlap between two adjacent protractors;

[0015] The first connector or the second connector is stacked on the overlapping portion.

[0016] Furthermore, the connector is arranged in a fan shape, and the central angle of the connector is equal to that of the overlapping portion.

[0017] Furthermore, the first connector includes a body, and the first insertion portion includes an upper boss and a lower boss spaced apart on the body.

[0018] The first socket portion includes a first socket and a second socket spaced apart on the protractor;

[0019] The first receiving slot is correspondingly provided with the upper boss, and the second receiving slot is correspondingly provided with the lower boss.

[0020] Furthermore, the upper boss and the lower boss are respectively provided with round holes for the fastener to pass through, and the side of the body opposite to the upper boss is provided with a hexagonal hole, which is corresponding to the round hole, and the lock nut is disposed in the hexagonal hole.

[0021] Furthermore, both the first and second sockets are arc-shaped.

[0022] Furthermore, the upper planes of the first and second plug-in portions are not lower than the protractor plane located above;

[0023] The fastener includes a handle section and a threaded section. The handle section is provided with several anti-slip ribs evenly distributed along the circumference. The handle section abuts against the protractor and the first insertion part.

[0024] Furthermore, the protractors are arranged in a fan shape, and several of the protractors have the same measuring range, and / or...

[0025] The ranges of the various protractors are different.

[0026] Furthermore, the protractor is provided with inner and outer scale lines.

[0027] Compared with the prior art, this utility model has the following advantages:

[0028] The internal and external angle measuring device of this utility model is provided with several interconnected protractors. The protractors are connected to each other by a first connector, which is inserted into two adjacent protractors to form a positioning of the two protractors. This avoids the displacement of the protractors when they are moved, and keeps the two protractors on the same center. The measuring range of the internal and external angle measuring device can be expanded or reduced to meet the angle measurement needs of different objects. The first connector is installed on the corresponding protractor by fasteners and lock nuts. The structure is simple and reduces production costs.

[0029] Furthermore, when measuring interior angles, multiple interconnected protractors adjust the overlap angle of adjacent protractors so that the two sides of the protractor are in contact with the side wall of the building, adapting to the angle of the building's interior angles and obtaining accurate interior angles. Similarly, when measuring exterior angles, the extension angles of each protractor are adjusted so that the two sides of the protractor are in contact with the side wall of the building, obtaining the exterior angle. This makes the measurement operation convenient, improves measurement efficiency, and ensures measurement accuracy.

[0030] In addition, because the protractor is telescopic and adjustable, it can be adjusted to its minimum angle when carried, making it convenient for construction personnel to carry. Furthermore, since the internal and external angle measuring device is a single unit, it can be used for direct measurement of both internal and external angles, eliminating the need to carry multiple dedicated measuring devices and improving the convenience of measurement work. Attached Figure Description

[0031] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0032] Figure 1 This is a top view of the interior and exterior angle measuring device in its unfolded state according to an embodiment of the present invention;

[0033] Figure 2 This is a three-dimensional schematic diagram of the interior and exterior angle measuring device described in an embodiment of the present invention from a first perspective;

[0034] Figure 3 This is a three-dimensional schematic diagram of the interior and exterior angle measuring device described in an embodiment of the present invention from a second perspective;

[0035] Figure 4 This is a top view of the retracted state of the interior and exterior angle measuring device according to an embodiment of the present invention;

[0036] Figure 5 This is a perspective view of the first connector described in an embodiment of the present utility model.

[0037] Figure 6 This is a perspective view of the first connector described in an embodiment of the present utility model from a second angle.

[0038] Figure 7 This is a schematic diagram of the 90° protractor described in an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the 45° protractor described in an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the 30° protractor described in an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the 60° protractor described in an embodiment of the present invention;

[0042] Figure 11 This is a schematic diagram of the 180° protractor described in an embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Protractor; 2. First connector; 3. Fastener; 4. Lock nut; 5. Second connector;

[0045] 101. First socket; 102. Second socket; 103. Inner ring graduation lines; 104. Outer ring graduation lines;

[0046] 201. First insertion part; 202. Main body;

[0047] 301. Handle section; 302. Threaded section; 303. Anti-slip ribs;

[0048] 1011, First socket; 1012, Second socket;

[0049] 2011, upper boss; 2012, lower boss;

[0050] 2021, Hexagonal hole;

[0051] 20111, round hole. Detailed Implementation

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0053] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0055] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0056] This embodiment relates to an interior and exterior angle measuring device, which, as a whole, Figures 1 to 4 As shown, the interior and exterior angle measuring device includes several protractors 1 connected together, a first connector 2 inserted into two adjacent protractors 1, a fastener 3 for connecting the protractors 1 and the first connector 2, and a lock nut 4 screwed onto the fastener 3. The first connector 2 is provided with a first insertion part 201, and the protractors 1 are formed with a first socket part 101. The first insertion part 201 slides along the first socket part 101 to allow the multiple protractors 1 to extend and retract for adjustment, and the exterior angle of the interior and exterior angle measuring device is adjustable.

[0057] As described above, the interior and exterior angle measuring device in this embodiment comprises several interconnected protractors 1. A first connector 2 is inserted into adjacent protractors 1 to position them, preventing displacement of the protractors 1 when moved and ensuring they remain centered on the same point. The first connector 2 is further secured to the corresponding protractor 1 using fasteners 3 and lock nuts 4, resulting in a simple structure and reduced production costs.

[0058] Furthermore, when measuring interior angles, the multiple interconnected protractors 1 adjust the overlap angle of adjacent protractors 1 so that both sides of the protractor abut against the side wall of the building, adapting to the interior angle and thus obtaining an accurate interior angle. Similarly, when measuring exterior angles, the extension angle of each protractor 1 is adjusted so that both sides of the protractor abut against the side wall of the building, obtaining the exterior angle. This makes the measurement operation convenient, improves measurement efficiency, and ensures measurement accuracy.

[0059] In addition, since the protractor 1 is telescopic and adjustable, it can be adjusted to the minimum angle when carried, making it convenient for construction personnel to carry. Furthermore, since the internal and external angle measuring device is a single unit, it can be used for direct measurement of both internal and external angles, eliminating the need to carry multiple dedicated measuring devices and improving the convenience of measurement work.

[0060] Based on the above overall introduction, an exemplary structure of the interior and exterior angle measuring device in this embodiment is as follows: Figures 1 to 4 As shown, the internal and external angle measuring device consists of three 60° angle protractors 1 and one 90° angle protractor 1, which can be used to measure acute and acute angles.

[0061] As a preferred embodiment, such as Figures 1 to 4 As shown, the protractor 1 is also provided with a second socket portion 102, and a second connector 5 is also provided on the side of the protractor 1 away from the first connector 2. The second connector 5 is provided with a second insertion portion, which slides along the second socket portion 102. The second socket portion 102 and the first socket portion 101 are staggered. By providing the second connector 5, the radii of curvature of the first socket portion 101 and the second socket portion 102 can be different, thus meeting the requirements for the amount of expansion and contraction while satisfying the structural strength of the protractor 1.

[0062] like Figures 1 to 4 As shown, the first connector 2 and the second connector 5 have the same structure. The first socket portion 101 and the second socket portion 102 are staggered along the radial direction of the protractor 1. The first socket portions 101 of two adjacent protractors 1 are connected together, or the second socket portions 102 of two adjacent protractors 1 are connected together. There is an overlapping portion between two adjacent protractors 1, and the first connector 2 or the second connector 5 is stacked on the overlapping portion.

[0063] Preferably, such as Figures 5 to 6 As shown, the connectors are arranged in a fan shape, and the central angle of the connectors is equal to the overlapping part. In this embodiment, the minimum overlap angle between two adjacent protractors 1 is 15°, and the angle of this minimum overlap part can be set as needed.

[0064] In addition, such as Figures 5 to 6As shown, the first connector 2 includes a body 202, a first insertion part 201 including an upper boss 2011 and a lower boss 2012 spaced apart on the body 202, and a first receiving part 101 including a first receiving slot 1011 and a second receiving slot 1012 spaced apart on the protractor 1. The first receiving slot 1011 is correspondingly disposed to the upper boss 2011, and the second receiving slot 1012 is correspondingly disposed to the lower boss 2012. For ease of carrying and use, a triangular weight-reducing hole is also provided on the body 202.

[0065] Furthermore, such as Figures 5 to 6 As shown, both the first socket 1011 and the second socket 1012 are arc-shaped. The upper boss 2011 is structurally adapted to the first socket 1011, and the lower boss 2012 is structurally adapted to the second socket 1012; that is, the upper boss 2011 is concentric with the first socket 1011, and the lower boss 2012 is concentric with the second socket 1012. Figure 2 As shown, the main body 202 is arranged radially along the protractor 1. Since the first socket 1011 and the second socket 1012 are both concentric with the protractor 1, the connection of the first connector 2 or the second connector 5 can ensure that each protractor 1, which slides and extends, always remains concentric, thus ensuring that the measurement accuracy is maintained while the measurement range of the internal and external angle measuring device increases.

[0066] As mentioned above, if the first socket 101 and the second socket 102 have the same radius of curvature, and the first socket 101 and the second socket 102 are connected in order to meet the minimum extension requirement, the protractor 1 will have low structural strength and is prone to breakage at the position of the first socket 1011 and the second socket 1012, thus reducing the service life of the internal and external angle measuring device.

[0067] In addition, such as Figures 5 to 6 As shown, the upper boss 2011 and the lower boss 2012 are respectively provided with round holes 20111 for fasteners 3 to pass through. A hexagonal hole 2021 is provided on the side of the body 202 facing away from the upper boss 2011. The hexagonal hole 2021 corresponds to the round hole 20111, and the lock nut 4 is disposed within the hexagonal hole 2021. This design simplifies the connection structure, reduces costs, and facilitates operation. The hexagonal hole 2021 prevents the nut from protruding and causing scratches on the hand, improving safety and comfort.

[0068] As a preferred embodiment, such as Figures 1 to 4As shown, the upper surfaces of the first insertion part 201 and the second insertion part are not lower than the plane of the protractor 1 located above. The fastener 3 includes a handle section 301 and a threaded section 302. The handle section 301 is provided with a plurality of anti-slip ribs 303 evenly distributed along the circumference. The handle section 301 abuts against the protractor 1 and the first insertion part 201. The fastener 3 in this embodiment is a rotating structure. The anti-slip ribs 303 on the handle section 301 can increase the friction of the hand and facilitate operation.

[0069] This design prevents the handle section 301 from contacting the plane of the protractor 1 during sliding, thus avoiding affecting the flexibility of the protractor 1's sliding. When it is necessary to lock the angle, a flat pad is placed at the bottom of the handle section 301, and the handle section 301 is tightened to lock it.

[0070] like Figures 7 to 11 As shown, the protractors 1 are arranged in a fan shape, and several protractors 1 have the same measuring range, and / or several protractors 1 have different measuring ranges. In order to meet the measurement needs of various buildings, different protractors 1 or the same protractors 1 can be combined.

[0071] For convenient and quick on-site measurement, the protractor 1 has the following exemplary combination:

[0072] By making a total of 9 protractors (two 30°, two 45°, two 60°, two 90°, and one 180°), the measurement range of interior angles can be 30° to 360°.

[0073] Two 30°: Interior angle measurement range 30~45°;

[0074] Two 45°: Interior angle measurement range 45–75°;

[0075] Two 60°: Interior angle measurement range 60~105°;

[0076] Two 90°: Interior angle measurement range 90–165°;

[0077] Two 90° angles plus one 30° angle: Interior angle measurement range 120–180°;

[0078] One 180° + two 90°: Exterior angle measurement range 180~330°;

[0079] One 180° + two 90° + one 45°: Exterior angle measurement range 210~360°.

[0080] Preferably, such as Figures 7 to 11As shown, the protractor 1 has an inner scale line 103 and an outer scale line 104, which can intuitively obtain the measured building angle. When measuring a large angle, for example, when the measured exterior angle = 359°, the interior angle can be converted to 1°; therefore, the measurement range of the exterior angle is 0° to 360°; the measurement range of the interior angle is 30° to 360°.

[0081] 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. An interior and exterior angle measuring device, characterized in that: It includes several protractors (1) connected together, a first connector (2) inserted into two adjacent protractors (1), a fastener (3) for connecting the protractors (1) and the first connector (2), and a lock nut (4) screwed onto the fastener (3). The first connector (2) is provided with a first insertion part (201), and the protractor (1) is formed with a first socket part (101). The first insertion part (201) slides along the first socket part (101) so that the multiple protractors (1) can be extended and retracted. The outer angle of the inner and outer angle measuring device is adjustable.

2. The interior and exterior angle measuring device according to claim 1, characterized in that: The protractor (1) is also provided with a second socket (102), and a second connector (5) is provided on the side of the protractor (1) away from the first connector (2). The second connector (5) is provided with a second insertion part, and the second insertion part slides along the second socket (102). The second socket (102) is staggered with the first socket (101).

3. The interior and exterior angle measuring device according to claim 2, characterized in that: The first connector (2) and the second connector (5) have the same structure; The first socket (101) and the second socket (102) are arranged alternately along the radial direction of the protractor (1); The first socket (101) of two adjacent protractors (1) are connected together, or the second socket (102) of two adjacent protractors (1) are connected together. There is an overlap between two adjacent protractors (1); The first connector (2) or the second connector (5) is stacked on the overlapping portion.

4. The interior and exterior angle measuring device according to claim 3, characterized in that: The connector is arranged in a fan shape, and the central angle of the connector is equal to that of the overlapping portion.

5. The interior and exterior angle measuring device according to claim 3, characterized in that: The first connector (2) includes a body (202), and the first plug-in part (201) includes an upper boss (2011) and a lower boss (2012) spaced apart on the body (202); The first socket (101) includes a first socket (1011) and a second socket (1012) spaced apart on the protractor (1); The first receiving slot (1011) is correspondingly provided with the upper boss (2011), and the second receiving slot (1012) is correspondingly provided with the lower boss (2012).

6. The interior and exterior angle measuring device according to claim 5, characterized in that: The upper boss (2011) and the lower boss (2012) are respectively provided with round holes (20111) for the fastener (3) to pass through. The body (202) has a hexagonal hole (2021) on the side opposite to the upper boss (2011). The hexagonal hole (2021) is provided in correspondence with the round hole (20111). The lock nut (4) is provided in the hexagonal hole (2021).

7. The interior and exterior angle measuring device according to claim 5, characterized in that: Both the first socket (1011) and the second socket (1012) are arc-shaped.

8. The interior and exterior angle measuring device according to claim 5, characterized in that: The upper planes of the first plug-in portion (201) and the second plug-in portion are not lower than the plane of the protractor (1) located above; The fastener (3) includes a handle section (301) and a threaded section (302). The handle section (301) is provided with a plurality of anti-slip ribs (303) evenly distributed along the circumference. The handle section (301) abuts against the protractor (1) and the first plug-in part (201).

9. The interior and exterior angle measuring device according to claim 1, characterized in that: The protractors (1) are arranged in a fan shape, and some of the protractors (1) have the same range, and / or some of the protractors (1) have different ranges.

10. The interior and exterior angle measuring device according to claim 1, characterized in that: The protractor (1) is provided with an inner scale line (103) and an outer scale line (104).

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