Tool ruler for mechanical drawing

Abstract

The tool ruler for mechanical drawing comprises a drawing ruler, a circle drawing assembly is arranged on the right side in the drawing ruler, a containing assembly is arranged on the left side in the drawing ruler, and a limiting cylinder can be moved left and right by unscrewing a positioning nut; the distance between the limiting cylinder and the conical seat is conveniently adjusted by a drawing worker according to requirements, so that the size of a circle is adjusted, the conical seat can be pressed by the pressing piece through the connecting seat by pressing the pressing piece, and the middle position of the drawing ruler is limited; at the moment, the other hand of a drawing person pinches an external drawing brush, the drawing brush is vertically inserted into the limiting cylinder and does circular motion so that a circle can be drawn, through the arrangement of the containing cavity, the drawing person can conveniently contain some drawing erasers, pencil leads or small-size drawing tools in the containing cavity, and the drawing person can conveniently draw a curve through groove. Therefore, the convenience of the drawing personnel in the drawing process is better.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical drawing tools, in particular to a tool ruler for mechanical drawing. Background Art

[0002] Mechanical drawing is a discipline that uses drawings to accurately represent the structural shape, size, working principle and technical requirements of a machine. Drawings are composed of graphics, symbols, text and numbers. They are technical documents that express design intentions and manufacturing requirements and exchange experience. They are often called the language of the engineering community. In the process of mechanical drawing, corresponding tool rulers are needed for drawing.

[0003] Publication number "CN209580957U" provides a tool ruler for mechanical drawing and drawing. The front of the main ruler is provided with a protractor hole, and the front of the auxiliary ruler is provided with an arrow hole, a circular hole and a rectangular hole. The draftsman can draw arrows, circles and rectangles through the arrow holes, circular holes and rectangular holes on the front of the auxiliary ruler. When the draftsman wants to measure the angle of the figure, the angle can be measured through the protractor hole on the front of the main ruler, thereby solving the problem that the existing tool ruler cannot measure angles or quickly draw some arrows, circles and rectangles.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] Firstly, the tool ruler for mechanical drawing does not have the ability to draw circles, which means that draftsmen need to use a compass when drawing circles of different diameters. Secondly, the tool ruler for mechanical drawing cannot store some small tools used for drawing, which makes it inconvenient for draftsmen to pick up and use or store some small tools used for drawing during the mechanical drawing process. The practicality needs to be improved. Utility Model Content

[0006] The purpose of the utility model is to provide a tool ruler for mechanical drawing to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A tool ruler for mechanical drawing comprises a drawing ruler and a protractor, wherein the left end face of the drawing ruler is provided with a protractor, the right side of the inside of the drawing ruler is provided with a circle drawing component, and the circle drawing component enables the drawing ruler to have the ability to draw circles, and the left side of the inside of the drawing ruler is provided with a storage component, and the storage component enables the drawing ruler to have the storage capability.

[0009] Preferably, the circle drawing component includes a limiting groove, a limiting cylinder, a positioning nut, a pressing piece, a conical seat, a connecting seat, a guide groove and a guide block. A connecting seat is installed in the middle position inside the drawing ruler, a pressing piece is installed on the upper end of the connecting seat, and a conical seat is installed on the bottom of the connecting seat. A limiting groove is provided on the right side of the upper end surface of the drawing ruler, and guide grooves are symmetrically provided on the front and rear sides of the inner wall of the limiting groove. A limiting cylinder is installed inside the limiting groove, a positioning nut is installed on the upper side of the annular side surface of the limiting cylinder, and guide blocks are symmetrically provided on the front and rear sides of the annular side surface of the limiting cylinder.

[0010] Preferably, the storage component includes a storage cavity, an insertion slot, a triangular through cavity, a shielding piece and a curved through slot. A storage cavity is opened on the left side of the upper end face of the drawing ruler, an insertion slot is opened on the upper side of the inner wall of the storage cavity, a shielding piece is inserted inside the insertion slot, a curved through slot is opened on the front side of the upper end face of the shielding piece, and a triangular through cavity is opened on the rear side of the upper end face of the shielding piece.

[0011] Preferably, a ball bearing is installed on the annular side surface of the connecting seat, the connecting seat is connected to the pressing plate and the conical seat by connecting screws, and an anti-slip sheet is bonded to the upper end surface of the pressing plate.

[0012] Preferably, the guide block matches the guide groove, the upper side of the annular side of the limiting cylinder is provided with an external thread, the annular side of the positioning nut is provided with anti-slip textures, and the limiting groove matches the limiting cylinder.

[0013] Preferably, a circular through cavity is opened on the front side of the interior of the drawing ruler, and there are three groups of circular through cavities, and the diameters of the three groups of circular through cavities increase from left to right; a rectangular through cavity is opened on the rear side of the interior of the drawing ruler, and there are three groups of rectangular through cavities, and the areas of the three groups of rectangular through cavities increase from left to right; a circular groove is opened in the middle of the upper end surface of the drawing ruler, and the circular groove matches the pressing piece.

[0014] Preferably, a pinch piece is provided on the left side of the upper end surface of the shielding piece, the shielding piece matches the insertion slot, and three groups of triangular through cavities are provided, and the areas of the three groups of triangular through cavities increase successively from left to right.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. During the mechanical drawing process, by loosening the positioning nut, the limit cylinder can be moved left and right, so that the draftsman can adjust the distance between the limit cylinder and the conical seat according to the needs, so as to adjust the size of the drawn circle, and the limit slot can limit the limit cylinder, and the matching guide block and guide slot also prevent the limit cylinder from shaking or shifting up and down during use. By pressing the pressing piece, the pressing piece presses the conical seat through the connecting seat, so that the conical seat moves downward a certain distance to limit the middle position of the drawing ruler. At this time, the draftsman holds the external drawing pen with his other hand and inserts it vertically into the limit cylinder, so that the external drawing pen can be used to make circular motion to draw a circle;

[0017] 2. By opening a storage cavity, it is convenient for cartographers to store some erasers, pencil leads or small-volume drawing tools for drawing in the storage cavity, so that they can be taken out and used at a later time. The three sets of triangular cavities are convenient for cartographers to draw large, medium and small triangular patterns, and the curve grooves are convenient for cartographers to draw curves, so that cartographers can be more convenient in the process of drawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a structural diagram of the storage component and the circle drawing component in the utility model;

[0020] Figure 3 It is a front cross-sectional view of the storage component and the circle drawing component in the utility model;

[0021] Figure 4 This is a structural diagram of the limit cylinder and the positioning nut in the utility model;

[0022] Figure 5 It is a structural diagram of the pressing piece and the conical seat in the utility model.

[0023] In the figure: 1. drawing ruler; 11. circular through cavity; 12. rectangular through cavity; 2. storage component; 21. storage cavity; 22. insertion slot; 23. triangular through cavity; 24. shielding piece; 25. pinching piece; 26. curved through slot; 3. circle drawing component; 31. anti-slip sheet; 32. limiting slot; 33. limiting cylinder; 34. positioning nut; 35. connecting screw; 36. pressing piece; 37. ball bearing; 38. conical seat; 39. connecting seat; 311. guide groove; 312. guide block; 4. protractor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A tool ruler for mechanical drawing comprises a drawing ruler 1 and a protractor 4. The protractor 4 is arranged on the left end face of the drawing ruler 1. The protractor 4 and the drawing ruler 1 are an integrated structure. The protractor 4 can draw angles, measure angles, draw vertical lines, parallel lines, measure inclinations, arc lines, verticality and horizontality, and can draw circles of specified sizes. A circle drawing component 3 is arranged on the right side inside the drawing ruler 1, and the circle drawing component 3 enables the drawing ruler 1 to have the ability to draw circles. A storage component 2 is arranged on the left side inside the drawing ruler 1, and the storage component 2 enables the drawing ruler 1 to have the ability to store.

[0028] The circle drawing component 3 includes a limiting slot 32, a limiting cylinder 33, a positioning nut 34, a pressing piece 36, a conical seat 38, a connecting seat 39, a guide groove 311 and a guide block 312. A connecting seat 39 is installed in the middle position inside the drawing ruler 1, and the connecting seat 39 can support the pressing piece 36. A pressing piece 36 is installed on the upper end of the connecting seat 39. The pressing piece 36 is convenient for the draftsman to press the connecting seat 39. A conical seat 38 is installed at the bottom of the connecting seat 39. The conical seat 38 can be fixed on the drawing paper when it is pressed down to avoid The free drawing ruler 1 is easily displaced during the circular rotation. A limiting slot 32 is provided on the right side of the upper end surface of the drawing ruler 1. The limiting slot 32 matches the limiting cylinder 33. The limiting slot 32 not only facilitates the limiting cylinder 33 to move left and right inside the drawing ruler 1, but also can guide the limiting cylinder 33 to avoid the displacement of the limiting cylinder 33 during use. Guide slots 311 are symmetrically provided on the front and back sides of the inner wall of the limiting slot 32, and the guide slot 311 can guide the guide block 312 to limit the position.

[0029] A limiting cylinder 33 is installed inside the limiting groove 32. The inner diameter of the limiting cylinder 33 is the same as the outer diameter of the external drawing pen. The limiting cylinder 33 can limit the external drawing pen to prevent the external drawing pen from deviating or shaking when drawing a circle with the help of the circle drawing component 3. A positioning nut 34 is installed on the upper side of the annular side of the limiting cylinder 33. An external thread is provided on the upper side of the annular side of the limiting cylinder 33, and the external thread is meshed with the positioning nut 34. The meshed external thread and the positioning nut 34 can limit the limiting cylinder 33 in the limiting groove 32. The guide blocks 312 are symmetrically arranged on the front and rear sides of the annular side surface of the limiting cylinder 33, and the guide blocks 312 match the guide grooves 311. The guide blocks 312 and the limiting cylinder 33 are an integrated structure. The guide blocks 312 prevent the limiting cylinder 33 from shaking or moving up and down during use. A circular groove is provided in the middle position of the upper end surface of the drawing ruler 1, and the circular groove matches the pressing piece 36. The circular groove facilitates the use of the pressing piece 36 inside the drawing ruler 1, and the circular groove also enables the pressing piece 36 to have a certain ability to move up and down.

[0030] A ball bearing 37 is installed on the annular side of the connecting seat 39, and the ball bearing 37 makes the drafting ruler 1 smoother during circular rotation. The connecting seat 39 is connected to the pressing plate 36 and the conical seat 38 by connecting screws 35. The connecting screws 35 can connect the pressing plate 36, the connecting seat 39 and the conical seat 38. The upper end surface of the pressing plate 36 is bonded with an anti-skid sheet 31, and the anti-skid sheet 31 makes the upper end surface of the extrusion plate more anti-skid. The annular side surface of the positioning nut 34 is provided with anti-skid textures, and the anti-skid textures make the annular side surface of the positioning nut 34 more anti-skid, so as to prevent the draftsman from slipping easily when tightening or loosening the positioning nut 34.

[0031] Embodiment 2:

[0032] On the basis of the first embodiment, in this embodiment, by providing a storage cavity 21, it is convenient for cartographers to store some erasers, pencil leads or small-volume drawing tools for drawing in the storage cavity 21, so that they can be easily taken out and used later, and the three groups of triangular through cavities 23 are convenient for cartographers to draw large, medium and small triangular patterns, and the curved through grooves 26 are convenient for cartographers to draw curves, thereby facilitating cartographers to be more convenient in the process of drawing.

[0033] The storage assembly 2 includes a storage cavity 21, an insertion slot 22, a triangular through cavity 23, a shielding piece 24 and a curved through groove 26. The storage cavity 21 is provided on the left side of the upper end surface of the drawing ruler 1. The storage cavity 21 enables the drawing ruler 1 to store some erasers, pencil leads or small-volume drawing tools for drawing, so that the drawing staff can take them out and use them at will. The upper side of the inner wall of the storage cavity 21 is provided with an insertion slot 22. The insertion slot 22 facilitates the shielding piece 24 to be inserted into the drawing ruler 1. The shielding piece 24 is inserted into the insertion slot 22. The shielding piece 24 is matched with the insertion slot 22, the shielding piece 24 can shield the upper end of the storage cavity 21, and a curved through groove 26 is provided on the front side of the upper end face of the shielding piece 24. The curved through groove 26 is convenient for cartographers to draw curves, and a triangular through cavity 23 is provided on the rear side of the upper end face of the shielding piece 24. The triangular through cavity 23 is provided in three groups, and the areas of the three groups of triangular through cavities 23 increase from left to right. The three groups of triangular through cavities 23 whose areas increase from left to right are convenient for cartographers to draw triangular patterns of different sizes.

[0034] A circular through cavity 11 is provided on the front side of the drawing ruler 1, and there are three groups of circular through cavities 11, and the diameters of the three groups of circular through cavities 11 increase from left to right, and the three groups of circular through cavities 11 with diameters increasing from left to right are convenient for cartographers to draw circles of different sizes. A rectangular through cavity 12 is provided on the rear side of the drawing ruler 1, and there are three groups of rectangular through cavities 12, and the areas of the three groups of rectangular through cavities 12 increase from left to right, and the three groups of rectangular through cavities 12 with areas increasing from left to right are convenient for cartographers to draw rectangles of different sizes. A pinching piece 25 is provided on the left side of the upper end surface of the shielding piece 24, and the pinching piece 25 and the shielding piece 24 are an integrated structure, and the pinching piece 25 is convenient for cartographers to move the shielding piece 24 left and right to open and close it by hand.

[0035] Working principle: In the process of mechanical drawing, the draftsman can draw straight lines with the help of the drafting ruler 1, and can draw angles, vertical lines, parallel lines and arcs with the help of the protractor 4, or measure inclinations, angles, verticality and horizontality. When it is necessary to draw a circle, the draftsman first loosens the positioning nut 34 by hand, and then the limiting cylinder 33 can be moved left and right, so that the draftsman can adjust the size of the circle according to needs. After adjusting to the required position, tighten the positioning nut 34 so that the positioning nut 34 fixes the limiting cylinder 33 to prevent the limiting cylinder 33 from being displaced again. Then the draftsman presses the pressing piece 36 with his index finger, so that the pressing piece 36 presses the conical seat 38 through the connecting seat 39, so that the conical seat 38 moves downward a certain distance to limit the middle position of the drafting ruler 1. Then the draftsman holds the external drafting pen with his other hand and inserts it vertically into the limiting cylinder 33. At this time, the external drafting pen is moved in a circular motion The drawing ruler 1 will make a circular motion around the connecting seat 39, and the conical seat 38 will limit the connecting seat 39, thereby preventing the drawing ruler 1 from deviating during the circular motion; when the draftsman pinches the pinching piece 25 and pulls and removes the shielding piece 24, the draftsman can store some rubbers, pencil leads or small-volume drawing tools for drawing in the storage cavity 21, so that the draftsman can take them out and use them at will later, and the draftsman can also use the three groups of triangular through cavities 23 in the removed shielding piece 24 to draw triangular patterns of different sizes, and the curved through grooves 26 are convenient for the draftsman to draw curves. At the same time, the draftsman can also use the three groups of circular through cavities 11 whose diameters increase from left to right to draw circles of different sizes, and the three groups of rectangular through cavities 12 whose areas increase from left to right to draw rectangles of different sizes, so that the draftsman can be more convenient in the drawing process.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool ruler for mechanical drawing, comprising a drawing ruler (1) and a protractor (4), characterized in that: The left end face of the drawing ruler (1) is provided with a protractor (4), the right side of the interior of the drawing ruler (1) is provided with a circle drawing component (3), and the circle drawing component (3) enables the drawing ruler (1) to have the ability to draw a circle, and the left side of the interior of the drawing ruler (1) is provided with a storage component (2), and the storage component (2) enables the drawing ruler (1) to have the ability to store.

2. A tool ruler for mechanical drawing according to claim 1, characterized in that: The circle drawing component (3) comprises a limiting slot (32), a limiting cylinder (33), a positioning nut (34), a pressing sheet (36), a conical seat (38), a connecting seat (39), a guide slot (311) and a guide block (312). A connecting seat (39) is installed at a middle position inside the drawing ruler (1). A pressing sheet (36) is installed at the upper end of the connecting seat (39). A conical seat (38) is installed at the bottom of the connecting seat (39). A limiting slot (32) is provided on the right side of the upper end surface of the drawing ruler (1). Guide slots (311) are symmetrically provided on the front and rear sides of the inner wall of the limiting slot (32). A limiting cylinder (33) is installed inside the limiting slot (32). A positioning nut (34) is installed on the upper side of the annular side surface of the limiting cylinder (33). Guide blocks (312) are symmetrically provided on the front and rear sides of the annular side surface of the limiting cylinder (33).

3. The tool ruler for mechanical drawing according to claim 1, characterized in that: The storage assembly (2) comprises a storage cavity (21), an insertion slot (22), a triangular through cavity (23), a shielding piece (24) and a curved through groove (26); the storage cavity (21) is provided on the left side of the upper end surface of the drawing ruler (1); the insertion slot (22) is provided on the upper side of the inner wall of the storage cavity (21); the shielding piece (24) is inserted inside the insertion slot (22); the curved through groove (26) is provided on the front side of the upper end surface of the shielding piece (24); and the triangular through cavity (23) is provided on the rear side of the upper end surface of the shielding piece (24).

4. A tool ruler for mechanical drawing according to claim 2, characterized in that: A ball bearing (37) is installed on the annular side surface of the connecting seat (39). The connecting seat (39) is connected to the pressing piece (36) and the conical seat (38) through connecting screws (35). An anti-slip sheet (31) is bonded to the upper end surface of the pressing piece (36).

5. The tool ruler for mechanical drawing according to claim 2, characterized in that: The guide block (312) matches the guide groove (311), the upper side of the annular side of the limiting cylinder (33) is provided with an external thread, the annular side of the positioning nut (34) is provided with an anti-slip pattern, and the limiting groove (32) matches the limiting cylinder (33).

6. The tool ruler for mechanical drawing according to claim 1, characterized in that: A circular through cavity (11) is provided on the front side of the drawing ruler (1), and the circular through cavity (11) is provided in three groups, and the diameters of the three groups of circular through cavities (11) increase from left to right. A rectangular through cavity (12) is provided on the rear side of the drawing ruler (1), and the rectangular through cavity (12) is provided in three groups, and the areas of the three groups of rectangular through cavities (12) increase from left to right. A circular groove is provided in the middle of the upper end surface of the drawing ruler (1), and the circular groove matches the pressing piece (36).

7. The tool ruler for mechanical drawing according to claim 3, characterized in that: A pinching piece (25) is provided on the left side of the upper end surface of the shielding piece (24), the shielding piece (24) matches the insertion slot (22), and three groups of triangular through cavities (23) are provided, and the areas of the three groups of triangular through cavities (23) increase sequentially from left to right.

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