Rotary folding ruler

Abstract

The utility model discloses a rotary folding ruler, which comprises a first ruler body, a second ruler body and a rotary lock catch, the end part of the first ruler body is overlapped above the end part of the second ruler body, the end part of the first ruler body is provided with a clamping hole, the end part of the second ruler body is provided with a first buckle, the first buckle is buckled into the clamping hole, and the rotary lock catch is arranged on the first ruler body. The first buckle can rotate in the clamping hole, the rotary lock catch comprises a button, a second buckle, an ejector pin and a fixing ring, the fixing ring is arranged above the end of the first ruler body, the button is arranged in the center of the fixing ring, a through hole is formed in the center of the first buckle, a clamping ring is arranged on the inner wall of the first buckle, and the ejector pin is arranged in the clamping ring. A second buckle is arranged on the lower portion of the button and connected with the clamping ring in a matched mode, and an ejector pin is arranged in the center of the lower portion of the button. The folding ruler is fixed through the lock catch after being unfolded, the half ruler body is not prone to deviation, a user can conveniently draw long lines, and besides the traditional measuring function, the folding ruler further has the circle drawing function.

Description

Technical Field

[0001] The utility model relates to the technical field of folding rulers, in particular to a rotary folding ruler. Background Art

[0002] Currently, folding rulers on the market generally only have functions for measuring and drawing short straight lines. Most cannot remain stable when unfolded to draw long lines. Half of the ruler rotates and shifts during drawing, requiring the user to manually stabilize both sides to maintain the fully unfolded position, which can easily lead to significant errors. Furthermore, existing folding rulers cannot draw circles, requiring a compass to do so. Utility Model Content

[0003] In view of the above problems, the present invention aims to provide a rotating folding ruler to solve the problems of the folding ruler being fixed after being unfolded and being unable to draw a circle.

[0004] The technical problem solved by the present invention can be achieved by adopting the following technical solutions: A rotary folding ruler comprises a first ruler body, a second ruler body and a rotary lock buckle, wherein the end of the first ruler body is overlapped above the end of the second ruler body, the end of the first ruler body is provided with a clamping hole, the end of the second ruler body is provided with a first clamping buckle, the first clamping buckle is buckled into the clamping hole, and the first clamping buckle can rotate in the clamping hole, the rotary lock buckle comprises a button, a second clamping buckle, a thimble and a fixing ring, a fixing ring is provided above the end of the first ruler body, a button is provided at the center of the fixing ring, a through hole is provided at the center of the first clamping buckle, a clamping ring is provided on the inner wall of the first clamping buckle, a second clamping buckle is provided at the lower part of the button, the second clamping buckle is cooperated with the clamping ring, a thimble is provided at the lower center of the button, and the thimble passes through the center of the second clamping buckle.

[0005] An arc-shaped guide groove is provided at the end of the first ruler body, and an arc-shaped protrusion is provided at the end of the second ruler body. The arc-shaped protrusion is arranged in the arc-shaped guide groove, and the arc-shaped protrusion slides in the arc-shaped guide groove during rotation.

[0006] A positioning groove is provided on the first ruler body, and a positioning column is provided below the button. The lower part of the positioning column is arranged in the positioning groove, and the positioning column moves along the positioning groove during rotation.

[0007] The second ruler body is provided with an arc-shaped positioning strip, one side of which is in contact with the end edge of the first ruler body. A limiting portion is provided at one end of the end edge of the first ruler body, and the limiting portion is limited after contacting one end of the arc-shaped positioning strip.

[0008] A support bar is provided on one side of the lower portion of the fixing ring, the bottom surface of the support bar contacts the second ruler body, and the other side of the lower portion of the fixing ring contacts the outside of the arc-shaped guide groove on the first ruler body.

[0009] A pressing groove is provided at the center of the upper portion of the button, and a convex column is provided on the fixing ring.

[0010] The first ruler body and the second ruler body are provided with a plurality of circular holes, and the circular holes with the same circular radius on the first ruler body and the second ruler body overlap after being folded.

[0011] Compared with existing technologies, the present invention has the following advantages: After unfolding, the folding ruler is secured with a lock, preventing half of the ruler from shifting, facilitating long-line drawing. The ruler and compass are integrated into one design, enabling users to draw circles in addition to traditional measurement functions. After pressing the button to secure the center of a circle, insert a pen into the circle-drawing hole on the ruler and rotate the ruler around the center to draw a circle. The integrated ruler and compass design allows students to reduce the number of stationery items they carry, preventing the risk of students forgetting their compasses. It also protects children from being injured by the pins of the compass. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a structural diagram of the utility model;

[0014] Figure 3 It is an enlarged view of part A;

[0015] Figure 4 This is a schematic diagram of the structure of the utility model in a folded state;

[0016] Figure 5 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 6 It is an enlarged view of part B;

[0018] In the figure: 1-first ruler body, 2-second ruler body, 3-clamping hole, 4-first buckle, 5-fixing ring, 6-button, 7-second buckle, 8-clamping ring, 9-thimble, 10-protruding column, 11-arc-shaped guide groove, 12-arc-shaped protrusion, 13-positioning groove, 14-positioning column, 15-limiting part, 16-arc-shaped positioning strip, 17-support strip, 18-circular hole. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0020] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0021] Combined with attachment Figures 1 to 6 As shown, this embodiment discloses a rotary folding ruler, comprising a first ruler body 1, a second ruler body 2 and a rotary lock buckle. The end of the first ruler body 1 is overlapped above the end of the second ruler body 2. The end of the first ruler body 1 is provided with a locking hole 3. The end of the second ruler body 2 is provided with a first locking buckle 4. The first locking buckle 4 is buckled into the locking hole 3 and can rotate in the locking hole 3. The rotary lock buckle comprises a button 6, a second locking buckle 7, a thimble 9 and a fixing ring 5. The fixing ring 5 is provided above the end of the first ruler body 1. The center of the fixing ring 5 is provided with a button 6. The center of the first locking buckle 4 is provided with a through hole. The inner wall of the first locking buckle 4 is provided with a locking ring 8. The lower part of the button 6 is provided with a second locking buckle 7. The second locking buckle 7 is cooperated with the locking ring 8. The lower center of the button 6 is provided with a thimble 9, which passes through the center of the second locking buckle 7.

[0022] A support bar 17 is provided on one side of the lower portion of the fixing ring 5. The bottom surface of the support bar 17 contacts the end edge of the second ruler body 2 to support one side of the fixing ring 5. The other side of the lower portion of the fixing ring 5 contacts the outside of the arc-shaped guide groove 11 on the first ruler body 1 to support the other side of the fixing ring 5.

[0023] The center of the upper portion of the button 6 is provided with a pressing groove to improve the pressing comfort. The fixing ring 5 is provided with a boss 10, the upper end of the boss 10 is a round head.

[0024] The first ruler blade 1 is provided with an arcuate guide groove 11 at its end, and the second ruler blade 2 is provided with an arcuate protrusion 12 at its end. The arcuate protrusion 12 is positioned within the arcuate guide groove 11. During rotation, the arcuate protrusion 12 slides within the arcuate guide groove 11. The arcuate guide groove 11 and the arcuate protrusion 12 provide guidance during ruler rotation. The first ruler blade 1 is provided with a positioning groove 13. A positioning post 14 is provided below the button 6. The lower portion of the positioning post 14 is positioned within the positioning groove 13. During rotation, the positioning post 14 moves along the positioning groove 13. The positioning post 14 and the positioning groove 13 provide guidance during ruler rotation. This guiding structure ensures more stable and accurate ruler rotation.

[0025] The second ruler blade 2 is provided with a curved positioning strip 16, one side of which rests against the end edge of the first ruler blade 1. A stopper 15 is provided at one end of the end edge of the first ruler blade 1. When the stopper 15 contacts one end of the curved positioning strip 16, the first and second ruler blades 1 and 2 are fully extended, allowing for drawing long straight lines. The stopper 15 ensures that the ruler stops rotating after reaching its longest position. After unfolding, the folding ruler is secured with a lock, preventing half of the ruler blade from shifting, making it easier for the user to draw long lines.

[0026] The first and second ruler blades 1 and 2 are provided with multiple circle-drawing holes 18, allowing for drawing circles of varying radii. To draw a circle, first completely overlap the first and second blades 1 and 2. The holes with the same radius on the first and second blades 1 and 2 overlap after folding. Then, press button 6 with your finger. A pin 9, located below button 6, extends and locks onto the paper. Insert a pen into the hole on the ruler blade and rotate the ruler blades one full circle, centering on pin 9, to draw a circle. The integrated ruler and compass design of this folding ruler allows students to reduce the number of stationery items they carry, preventing the risk of students forgetting their compasses. It also prevents children from being injured by the pins of the compass.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change or modification made to the above embodiment based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A rotary folding ruler, comprising a first ruler body (1), a second ruler body (2) and a rotary lock, characterized in that: The end of the first ruler (1) is stacked above the end of the second ruler (2), the end of the first ruler (1) is provided with a clamping hole (3), the end of the second ruler (2) is provided with a first buckle (4), the first buckle (4) is buckled into the clamping hole (3), and the first buckle (4) can rotate in the clamping hole (3), the rotating lock comprises a button (6), a second buckle (7), a thimble (9) and a fixing ring (5), a fixing ring (5) is provided above the end of the first ruler (1), a button (6) is provided at the center of the fixing ring (5), a through hole is provided at the center of the first buckle (4), a clamping ring (8) is provided on the inner wall of the first buckle (4), a second buckle (7) is provided at the lower part of the button (6), the second buckle (7) is connected with the clamping ring (8), a thimble (9) is provided at the center of the lower part of the button (6), and the thimble (9) passes through the center of the second buckle (7).

2. The rotary folding ruler according to claim 1, characterized in that: An arc-shaped guide groove (11) is provided at the end of the first ruler body (1), and an arc-shaped protrusion (12) is provided at the end of the second ruler body (2). The arc-shaped protrusion (12) is arranged in the arc-shaped guide groove (11), and the arc-shaped protrusion (12) slides in the arc-shaped guide groove (11) during rotation.

3. The rotary folding ruler according to claim 1, characterized in that: A positioning groove (13) is provided on the first ruler body (1), and a positioning column (14) is provided below the button (6). The lower part of the positioning column (14) is arranged in the positioning groove (13), and the positioning column (14) moves along the positioning groove (13) when rotating.

4. The rotary folding ruler according to claim 1, characterized in that: The second ruler (2) is provided with an arc-shaped positioning strip (16), one side of which is in contact with the end edge of the first ruler (1), and a limiting portion (15) is provided at one end of the end edge of the first ruler (1), and the limiting portion (15) is limited after contacting one end of the arc-shaped positioning strip (16).

5. The rotary folding ruler according to claim 1, characterized in that: A support strip (17) is provided on one side of the lower portion of the fixing ring (5), the bottom surface of the support strip (17) contacts the second ruler (2), and the other side of the lower portion of the fixing ring (5) contacts the outside of the arc-shaped guide groove (11) on the first ruler (1).

6. The rotary folding ruler according to claim 1, characterized in that: A pressing groove is provided at the center of the upper portion of the button (6).

7. The rotary folding ruler according to claim 1, characterized in that: A protruding column (10) is provided on the fixing ring (5).

8. The rotary folding ruler according to claim 1, characterized in that: A plurality of circular holes (18) are provided on the first ruler body (1) and the second ruler body (2).

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