Portable drawing ruler for art design

Abstract

The utility model discloses a portable drawing ruler for art design in the technical field of drawing rulers, which comprises a ruler body, the ruler body is provided with scale marks which are transversely arranged, and the ruler body is provided with a circle drawing component and a parallel line component; the circle drawing assembly comprises a circular ring, the circular ring is arranged on the ruler body, the side edge, close to the circular ring, of the ruler body is attached to the side edge of the circular ring and is an arc-shaped edge, annular scale marks are annularly arranged on the circular ring, a transverse rod is fixedly connected into the circular ring and is parallel to the ruler body, and a rotating shaft is fixedly connected to the end, away from the circular ring, of the transverse rod. The marking rod is in clearance fit with the rotating shaft; the top of the identification rod at the rotating shaft is fixedly connected with a rotating rod. The scheme is simple and easy to operate, and through the design of the circle drawing assembly, convenient positioning and circle drawing operation of the position of the ruler body can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drawing rulers, in particular to a portable drawing ruler for art design. Background Art

[0002] Art design is a comprehensive art that includes environmental design, graphic design and other aspects. There is an art design major corresponding to it. When doing art design, you usually need to use a drawing ruler. The existing art design-specific drawing ruler is not convenient for drawing circles during drawing. It is necessary to change the drawing tool to draw or hand-draw, which not only takes a lot of time, but also easily makes mistakes and then needs to be modified. In addition, the existing art design-specific drawing ruler is not convenient for moving the mobile drawing ruler, which is not convenient for improving the efficiency of drawing, and cannot make the mobile drawing ruler rise or fall more smoothly and with less friction.

[0003] To solve the above problems, Chinese patent publication No. CN216331118U discloses a drawing ruler specially used for art design, comprising a scale and a sliding seat fixed on one side of the scale, a movable drawing ruler is installed inside the sliding seat, an angle ruler is fixedly connected to one side of the scale, a rotating seat is movably connected inside the angle ruler, a circle drawing component is installed inside the rotating seat, and a sliding component is installed inside the sliding seat.

[0004] The above device drives the limit plate to slide inside the fixed cylinder by pressing the extrusion rod, thereby driving the block to move in the slide groove opened on the surface of the fixed cylinder, and stretching the compression spring, thereby releasing the restriction on the fixed cylinder, making it easy to drive the fixed cylinder to slide in the slide groove opened inside the rotating seat, so as to facilitate the adjustment of the diameter of the drawn circle, and extend the drawing pen by pressing the pressing rod, so as to facilitate drawing circles during drawing, which is convenient for use. However, the drawing ruler is cumbersome to operate and has an irregular shape, which is not convenient for subsequent storage and convenient movement. Therefore, it is necessary to propose a portable art design drawing ruler that is easy to operate and has a regular shape. Utility Model Content

[0005] In order to solve the problem of cumbersome operation of the above-mentioned drawing ruler, the purpose of the utility model is to provide a portable drawing ruler for art design, which can realize convenient positioning of the ruler body and circle drawing operation through the design of the circle drawing component.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a portable drawing ruler for art design, comprising a ruler body, the ruler body is provided with horizontally arranged scale lines, the ruler body is provided with a circle drawing component and a parallel line component, and the circle drawing component and the parallel line component are respectively arranged on both sides of the ruler body;

[0007] The circle drawing component includes a circular ring, which is arranged on the ruler body. One side of the ruler body close to the circular ring is in contact with the side of the circular ring and has an arc-shaped side. Annular scale lines are arranged on the circular ring. A cross bar is fixedly connected to the inside of the circular ring. The cross bar is parallel to the ruler body. A rotating shaft is fixedly connected to the end of the cross bar away from the circular ring. A marking rod is rotatably connected to the upper part of the rotating shaft. The marking rod and the rotating shaft are clearance-matched. The top of the marking rod at the rotating shaft is fixedly connected to the rotating rod.

[0008] The principle of the basic scheme is: first move the ruler to the position where it is to be used. When the ruler body is placed on the drawing paper, it is not placed parallel. When it is tilted, because the clearance between the marking rod and the rotating shaft is matched, and the cross bar is fixedly connected to the inner wall of the ring, the marking rod will tilt with the tilt direction of the ruler body. At this time, the angle between the marking rod and the cross bar is greater than or less than 90°, so as to judge whether the ruler body is placed parallel at this time. When the ruler body is adjusted, when the marking rod and the cross bar are seen to be 90°, it can be concluded that the ruler body is in a parallel state at this time;

[0009] When drawing a straight line, just aim at the upper part of the ruler body to draw the straight line. When drawing a circle or semicircle or other curved pattern, pinch the rotating rod with your hand to move the marking rod. After moving to the appropriate position, control the position of the marking rod with your hand to perform the corresponding drawing operation.

[0010] The beneficial effects of the basic scheme are: 1. By identifying whether the angle between the marking rod and the crossbar is 90°, it is possible to quickly and directly determine whether the position of the ruler body is properly placed. Compared with the prior art that requires a separate positioning component, this scheme is simple, convenient and easy to operate;

[0011] 2. When you need to draw a straight line or a circle, just place the ruler body on the drawing place and you can start drawing. Compared with the existing technology, this solution is simple, convenient and easy to operate when drawing;

[0012] 3. Compared with the comparative documents, this device has a regular shape, is easy to store and place, and can be conveniently moved to the location where it is needed.

[0013] Furthermore, the rotating rod comprises an inner rod and an outer rod, the outer rod is fixedly connected to the outside of the marking rod, the inner rod is located inside the outer rod, a plurality of first springs are arranged at the contact point between the inner rod and the inner rod, the other end of the first spring is fixedly connected to the outer wall of the inner rod, and a plurality of locking grooves are arranged on the inner rod;

[0014] The identification rod is also provided with a sliding channel corresponding to the inner rod, the sliding channel corresponds to the position of the rotating shaft, the top of the rotating shaft is provided with a locking channel corresponding to the position of the sliding channel, the inner wall of the locking channel is provided with a plurality of second springs, and the other end of the second spring is fixedly connected with a locking bead corresponding to the lock groove.

[0015] The beneficial effect of the basic scheme is: after rotating the rotating rod to the appropriate position of the identification rod, press the inner rod by hand, and then the inner rod will pass through the sliding channel and move to the locking channel at the top of the rotating shaft, and as the inner rod moves vertically, the locking groove will gradually contact the locking bead, and then the locking bead will extend into the locking groove to lock the inner rod, and then the position of the identification rod can be locked, thereby facilitating subsequent painting operations.

[0016] Furthermore, a slider is provided on the outer wall of the ring, a sliding groove corresponding to the position of the slider is provided at the connection between the ruler body and the ring, a plurality of first tooth blocks are provided on the inner wall of the sliding groove, and a plurality of second tooth blocks slidably matched with the first tooth blocks are provided on the slider; a right-angle marking point is provided on the ruler body, the right-angle marking point is close to the ring, and the cross bar can be parallel to the marking point.

[0017] The beneficial effects of the basic solution are: it can achieve relatively convenient drawing of the entire circle, and when the position of the ring needs to be returned to its original position later, the position of the subsequent ruler body can be positioned by matching the cross bar with the marking point; and through the resistance between the first tooth block and the second tooth block, the ring can be prevented from rotating easily during drawing, thereby increasing stability during drawing.

[0018] Furthermore, the parallel line assembly includes a rectangular frame arranged on the ruler body, the rectangular frame is provided with horizontally arranged scale lines in the length direction, the rectangular frame is provided with vertically arranged scale lines in the width direction, a horizontal ruler is provided in the rectangular frame, and horizontally arranged scale lines are provided on the horizontal ruler. Both ends of the horizontal ruler extend into the inner wall of the rectangular frame, and vertical grooves corresponding to the two ends of the horizontal ruler are provided on the inner wall of the rectangular frame. The horizontal ruler and the rectangular frame are vertically slidably matched through the vertical grooves.

[0019] The beneficial effect of the basic scheme is that through the vertically arranged scale lines on both sides of the rectangular frame, on the one hand, the two ends of the horizontal ruler can be controlled to be on the same parallel line, and on the other hand, the spacing between different parallel lines can be controlled, which is suitable for practical and convenient drawing operations.

[0020] Furthermore, the top wall of the transverse ruler is provided with a first arc-shaped edge, and the bottom wall of the ruler body is provided with a second arc-shaped edge.

[0021] The beneficial effect of the basic solution is that it can facilitate users to draw arcs conveniently, and the design of the first arc-shaped edge on the horizontal drawing ruler can increase the user's options for drawing parallel arcs.

[0022] Furthermore, the curvature of the first arc-shaped side is smaller than the curvature of the second arc-shaped side.

[0023] The beneficial effect of the basic solution is that it can realize the drawing of various types of arcs, and thus can conveniently carry out the drawing selection of various arcs.

[0024] Furthermore, a mounting groove is provided on one side of the ruler body away from the circular ring, and a first through groove is provided on the top and bottom of the mounting groove;

[0025] It also includes a plurality of auxiliary rulers, each of which is fixedly connected to a clamping block near one end of the ruler body, a second through slot corresponding to the position of the first through slot is arranged inside the clamping block, the clamping block can be inserted into the installation slot, and fixing rods are inserted into the first through slot and the second through slot.

[0026] The beneficial effect of the basic scheme is that during installation, the block of the auxiliary ruler is close to the installation slot, and then the fixing rod is inserted, so that the fixing rod passes through the first through slot and the second through slot in sequence, and the installation and fixation of the auxiliary ruler is realized. By installing the auxiliary ruler, the length of the ruler is increased, which is suitable for drawing long straight lines.

[0027] Furthermore, a plurality of anti-skid grooves are arranged on the side of the ruler body close to the drawing and the side close to the human body, and a plurality of positioning suction cups are arranged on the side of the ruler body close to the drawing at right angles to the ruler body.

[0028] The beneficial effect of the basic solution is that the position of the ruler body can be selected and fixed corner by corner by the positioning suction cup, so as to facilitate the operation of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view of a portable drawing ruler for art design in an embodiment of the utility model.

[0030] Figure 2 It is a side sectional view of the circle drawing component in the portable art design drawing ruler in the embodiment of the utility model.

[0031] Figure 3 It is a front view of an auxiliary ruler in a portable drawing ruler for art design in an embodiment of the utility model. DETAILED DESCRIPTION

[0032] The following is further described in detail through specific implementation methods:

[0033] The figure marks in the drawings of the specification include: ruler body 1, parallel line assembly 2, rectangular frame 201, horizontal ruler 202, first arcuate edge 203, vertical groove 204, circle drawing assembly 3, ring 301, sliding groove 302, identification rod 303, cross bar 304, rotating shaft 305, outer rod 306, first spring 307, inner rod 308, locking groove 309, sliding channel 310, locking channel 311, locking bead 312, second arcuate edge 4, first through groove 5, mounting groove 6, auxiliary ruler 7, block 8, second through groove 9.

[0034] Example 1

[0035] Basically as attached Figure 1-Figure 3As shown: A portable drawing ruler for art design, comprising a ruler body 1, on which horizontally arranged scale lines are arranged, and on which a circle drawing component 3 and a parallel line component 2 are arranged, and the circle drawing component 3 and the parallel line component 2 are respectively arranged on both sides of the ruler body 1;

[0036] The circle drawing component 3 includes a circular ring 301, which is arranged on the ruler body 1. One side of the ruler body 1 close to the circular ring 301 is in contact with the side of the circular ring 301 and has an arc-shaped side. Circumferential scale lines are engraved on the circular ring 301. A cross bar 304 is welded inside the circular ring 301. The cross bar 304 is parallel to the ruler body 1. A rotating shaft 305 is welded on one end of the cross bar 304 away from the circular ring 301. An identification rod 303 is rotatably connected to the upper part of the rotating shaft 305. The identification rod 303 and the rotating shaft 305 are clearance-matched. A rotating rod is welded to the top of the identification rod 303 located at the rotating shaft 305.

[0037] The specific implementation process is as follows: when using the ruler for designing and drawing, first move the ruler to the position where it is needed. In order to make the position of the drawn straight line and pattern accurate and parallel, the ruler body 1 needs to be placed parallel to the drawing position. When the ruler body 1 is placed on the drawing paper, it is not placed parallel and tilted, because the marking rod 303 and the rotating shaft 305 are in clearance, and the cross bar 304 is fixedly connected to the inner wall of the ring 301, the marking rod 303 will tilt with the tilt direction of the ruler body 1. For example, when the left side of the ruler body 1 is lower than the right side, the marking rod 303 will tilt with the tilt direction of the ruler body 1. 303 will always be located at the center line of the ring 301 due to gravity, but because the cross bar 304 cannot move, the angle between the marking rod 303 and the cross bar 304 is greater than 90° at this time, and then it can be judged whether the ruler body 1 is placed in parallel at this time according to whether the angle between the marking rod 303 and the cross bar 304 is equal to 90°. When the ruler body 1 is adjusted, when it is seen that the marking rod 303 and the cross bar 304 are at 90°, it can be obtained that the ruler body 1 is in a parallel state at this time, and then it can be more accurately judged and adjusted whether the placement position of the ruler body 1 is accurate;

[0038] Then, when a straight line needs to be drawn, the straight line is directly drawn at the upper part of the ruler body 1. When a circle or semicircle or other curved pattern needs to be drawn, the user pinches the rotating rod with his hand according to the required angle, thereby driving the marking rod 303 to move. After moving to the appropriate position, the position of the marking rod 303 can be controlled by hand to perform the corresponding drawing operation. Therefore, the design of the circle drawing component 3 can realize the positioning of the ruler body 1 and the drawing of a circle, and the drawing of arcs at different angles can be realized by rotating the position of the marking rod 303, thereby reducing the need to set up a positioning device on the ruler body 1, thereby making the ruler body 1 as a whole more convenient and easy to operate.

[0039] Example 2

[0040] The difference from the above embodiment is that the rotating rod includes an inner rod 308 and an outer rod 306, the outer rod 306 is welded to the outside of the identification rod 303, the inner rod 308 is located inside the outer rod 306, a plurality of first springs 307 are welded at the contact point between the inner rod 308 and the inner rod 306, the other end of the first spring 307 is welded to the outer wall of the inner rod 308, and a plurality of locking grooves 309 are opened on the inner rod 308;

[0041] A sliding channel 310 corresponding to the inner rod 308 is also provided on the identification rod 303, and the sliding channel 310 corresponds to the position of the rotating shaft 305. A locking channel 311 corresponding to the position of the sliding channel 310 is provided on the top of the rotating shaft 305. A plurality of second springs are welded to the inner wall of the locking channel 311, and a locking bead 312 corresponding to the locking groove 309 is welded to the other end of the second spring. The inner rod 308 can pass through the sliding channel 310 and extend into the locking channel 311 to be locked.

[0042] The specific implementation process is as follows: after the rotating rod is rotated to the appropriate position of the identification rod 303, the inner rod 308 is pressed by hand, and then the inner rod 308 will pass through the sliding channel 310 and move to the locking channel 311 at the top of the rotating shaft 305, and as the inner rod 308 moves vertically, the locking groove 309 will gradually contact the locking bead 312, and then the locking bead 312 will extend into the locking groove 309 to lock the inner rod 308, and then the position of the identification rod 303 can be locked, thereby facilitating subsequent painting operations.

[0043] Example 3

[0044] The difference from the above embodiment lies in that a slider is welded to the outer wall of the ring 301, a sliding groove 302 corresponding to the position of the slider is opened at the connection between the ruler body 1 and the ring 301, a number of first tooth blocks are welded to the inner wall of the sliding groove 302, and a number of second tooth blocks slidably matched with the first tooth blocks are provided on the slider; right-angle marking points are engraved on the ruler body 1, the right-angle marking points are close to the ring 301, and the cross bar 304 can be parallel to the marking points.

[0045] The specific implementation process is as follows: when the circular ring 301 needs to be rotated as a whole, it can be achieved by directly moving the cross bar 304 by hand so that it can be moved in the sliding groove 302 through the slider, and the entire circle can be drawn more conveniently. At the same time, when the position of the circular ring 301 needs to be returned to its original position later, the position of the subsequent ruler body 1 can be positioned by matching the cross bar 304 with the marking point; and through the resistance between the first tooth block and the second tooth block, the circular ring 301 can be prevented from being easily rotated during painting, thereby increasing the stability during painting.

[0046] Example 4

[0047] The difference from the above embodiment is that the parallel line assembly 2 includes a rectangular frame 201 arranged on the ruler body 1, the rectangular frame 201 is engraved with horizontally arranged scale lines in the length direction, and the rectangular frame 201 is engraved with vertically arranged scale lines in the width direction. A horizontal ruler 202 is arranged in the rectangular frame 201, and the horizontal ruler 202 is provided with horizontally arranged scale lines. Both ends of the horizontal ruler 202 extend into the inner wall of the rectangular frame 201, and vertical grooves 204 corresponding to the two ends of the horizontal ruler 202 are opened on the inner wall of the rectangular frame 201, and the horizontal ruler 202 and the rectangular frame 201 are vertically slidably matched through the vertical grooves 204.

[0048] The specific implementation process is as follows: when it is necessary to draw parallel lines, the horizontal ruler 202 is directly moved manually, and then the two ends of the horizontal ruler 202 will move vertically along the vertical groove 204, so that it is convenient for the user to draw the required parallel lines, and through the vertical scale lines arranged on both sides of the rectangular frame 201, on the one hand, the two ends of the horizontal ruler 202 can be controlled to be on the same parallel line, and on the other hand, the spacing between different parallel lines can be controlled, so as to be suitable for practical and convenient drawing operations;

[0049] At the same time, the design of the rectangular frame 201 can also facilitate the user to directly draw the required rectangle, thereby reducing the complexity of designing multiple components to achieve a variety of drawings and multiple patterns.

[0050] Example 5

[0051] The difference from the above embodiment is that the top wall of the horizontal ruler 202 is provided with a first arc-shaped edge 203 , and the bottom wall of the ruler body 1 is provided with a second arc-shaped edge 4 .

[0052] The specific implementation process is as follows: the design of the first arcuate edge 203 and the second arcuate edge 4 can facilitate the user to draw arcs conveniently, and the design of the first arcuate edge 203 on the horizontal drawing ruler 202 can increase the user's options for drawing parallel arcs.

[0053] Example 6

[0054] The difference from the above embodiment is that the curvature of the first arc-shaped edge 203 is smaller than the curvature of the second arc-shaped edge 4 .

[0055] The specific implementation process is as follows: the first arc edge 203 and the second arc edge 4 have different curvatures, which can realize the drawing of various types of arcs, and thus can conveniently perform the drawing selection of various arcs.

[0056] Example 7

[0057] The difference from the above embodiment is that a mounting groove 6 is formed on the side of the ruler body 1 away from the ring 301, and a first through groove 5 is formed on the top and bottom of the mounting groove 6;

[0058] It also includes a plurality of auxiliary rulers 7, each of which has a clamping block 8 welded to one end of the auxiliary ruler 7 close to the ruler body 1, a second through slot 9 corresponding to the position of the first through slot 5 is opened inside the clamping block 8, the clamping block 8 can be inserted into the mounting slot 6, and fixing rods are inserted into the first through slot 5 and the second through slot 9.

[0059] The specific implementation process is as follows: when it is necessary to draw some long straight lines, it will be cumbersome to repeatedly move the ruler body 1 to draw, so at this time, the length of the ruler can be increased by installing an auxiliary ruler 7, so as to be suitable for drawing long straight lines;

[0060] During installation, the block 8 of the auxiliary ruler 7 is close to the installation slot 6 , and then the fixing rod is inserted so that the fixing rod passes through the first through slot 5 and the second through slot 9 in sequence, thereby achieving the installation and fixing of the auxiliary ruler 7 .

[0061] Example 8

[0062] The difference from the above embodiment is that a plurality of anti-slip grooves are engraved on the side of the ruler body 1 close to the drawing and the side close to the human body, and a plurality of positioning suction cups are provided on the side of the ruler body 1 close to the drawing at right angles to the ruler body 1.

[0063] The specific implementation process is as follows: when positioning the ruler body 1, the position of the ruler body 1 can be selected and fixed corner by corner through the positioning suction cup, so as to facilitate the operation of the user.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A portable drawing ruler for art design, characterized by: The ruler body comprises a ruler body, the ruler body is provided with horizontally arranged scale lines, the ruler body is provided with a circle drawing component and a parallel line component, and the circle drawing component and the parallel line component are respectively arranged on both sides of the ruler body; The circle drawing component includes a circular ring, which is arranged on the ruler body. One side of the ruler body close to the circular ring is in contact with the side of the circular ring and has an arc-shaped side. Annular scale lines are arranged on the circular ring. A cross bar is fixedly connected to the inside of the circular ring. The cross bar is parallel to the ruler body. A rotating shaft is fixedly connected to the end of the cross bar away from the circular ring. A marking rod is rotatably connected to the upper part of the rotating shaft. The marking rod and the rotating shaft are clearance-matched. The top of the marking rod at the rotating shaft is fixedly connected to the rotating rod.

2. The portable art design drawing ruler according to claim 1, characterized in that: The rotating rod comprises an inner rod and an outer rod, the outer rod is fixedly connected to the outside of the marking rod, the inner rod is located inside the outer rod, a plurality of first springs are arranged at the contact point between the inner rod and the outer rod, the other end of the first spring is fixedly connected to the outer wall of the inner rod, and a plurality of locking grooves are arranged on the inner rod; The identification rod is also provided with a sliding channel corresponding to the inner rod, the sliding channel corresponds to the position of the rotating shaft, the top of the rotating shaft is provided with a locking channel corresponding to the position of the sliding channel, the inner wall of the locking channel is provided with a plurality of second springs, and the other end of the second spring is fixedly connected with a locking bead corresponding to the lock groove.

3. The portable art design drawing ruler according to claim 2, characterized in that: A slider is provided on the outer wall of the ring, a sliding groove corresponding to the position of the slider is provided at the connection between the ruler body and the ring, a plurality of first tooth blocks are provided on the inner wall of the sliding groove, and a plurality of second tooth blocks slidably matched with the first tooth blocks are provided on the slider; a right-angle marking point is provided on the ruler body, the right-angle marking point is close to the ring, and the cross bar can be parallel to the marking point.

4. The portable art design drawing ruler according to claim 3, characterized in that: The parallel line assembly includes a rectangular frame arranged on the ruler body, the rectangular frame is provided with horizontally arranged scale lines in the length direction, the rectangular frame is provided with vertically arranged scale lines in the width direction, a horizontal ruler is provided in the rectangular frame, and horizontally arranged scale lines are provided on the horizontal ruler. Both ends of the horizontal ruler extend into the inner wall of the rectangular frame, and vertical grooves corresponding to the two ends of the horizontal ruler are provided on the inner wall of the rectangular frame. The horizontal ruler and the rectangular frame are vertically slidably matched through the vertical grooves.

5. The portable art design drawing ruler according to claim 4, characterized in that: The top wall of the horizontal drawing ruler is provided with a first arc-shaped edge, and the bottom wall of the ruler body is provided with a second arc-shaped edge.

6. The portable art design drawing ruler according to claim 5, characterized in that: The curvature of the first arcuate side is smaller than the curvature of the second arcuate side.

7. The portable art design drawing ruler according to claim 6, characterized in that: A mounting groove is provided on one side of the ruler body away from the ring, and a first through groove is provided on the top and bottom of the mounting groove; It also includes a plurality of auxiliary rulers, each of which is fixedly connected to a clamping block near one end of the ruler body, a second through slot corresponding to the position of the first through slot is arranged inside the clamping block, the clamping block can be inserted into the installation slot, and fixing rods are inserted into the first through slot and the second through slot.

8. The portable art design drawing ruler according to claim 7, characterized in that: The ruler body is provided with a plurality of anti-skid grooves on one side close to the drawing and the other side close to the human body, and the ruler body is provided with a plurality of positioning suction cups located at right angles to the ruler body on the side close to the drawing.

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