Adjustable mechanical drafting table

Abstract

The present invention provides an adjustable mechanical drafting table, comprising a support frame, a support plate pivotally arranged on the support frame, a support assembly, first elastic strings and second elastic strings. The support assembly comprises a support member pivotally arranged on the back surface of the support plate, and a plurality of positioning portions constructed on the support frame; the bottom end of the support member can be inserted into one of the positioning portions; the plurality of first elastic strings are vertically connected between the upper and lower sides of the support plate, and are arranged at intervals in the length direction of the support plate; and the plurality of second elastic strings are transversely connected between the left and right sides of the support plate, and are arranged at intervals in the width direction of the support plate.

Description

Adjustable mechanical drawing table TECHNICAL FIELD

[0001] The present application relates to the technical field of teaching aids for mechanical drawing, in particular to an adjustable mechanical drawing table. BACKGROUND

[0002] In the prior art, there are drawing papers with standard grids for the above-mentioned drawing, but such papers are all colored, and the grid lines are also colored. After repeated rubbing with an eraser, not only is local discoloration easy to occur, affecting the overall aesthetics, but when the pencil-drawn lines are relatively light, the clarity of the drawing is also affected, thereby affecting the effect of the drawing.

[0003] SUMMARY

[0004] The present application provides an adjustable mechanical drawing table, comprising a support and a support plate pivotally arranged on the support, a drawing paper being arranged on the front surface of the support plate, and the adjustable mechanical drawing table further comprising:

[0005] a support assembly, comprising a support member pivotally arranged on the back surface of the support plate, and a plurality of positioning portions arranged at intervals on the support, and the bottom end of the support member being selectively inserted into any positioning portion;

[0006] a first elastic line and a second elastic line arranged on the front surface of the support plate, the first elastic line being vertically connected between the upper and lower sides of the support plate and being arranged at intervals along the length direction of the support plate, and the second elastic line being transversely connected between the left and right sides of the support plate and being arranged at intervals along the width direction of the support plate, and each first elastic line being arranged orthogonally to each second elastic line.

[0007] The present application has the following advantages:

[0008] By arranging the support member and the positioning portions, the pivoting angle of the support plate relative to the support can be adjusted and fixed, thereby improving the flexibility during use.

[0009] By arranging the fixing plate, the effect during mechanical drawing can be further improved, and by arranging the box body and the box cover, the tools used during drawing can be stored, thereby improving the neatness. BRIEF DESCRIPTION OF DRAWINGS

[0010] FIG. 1 is a structural schematic view of the present application from a first perspective;

[0011] FIG. 2 is a structural schematic view of the present application from a second perspective;

[0012] FIG. 3 is a structural schematic view of the present application from a third perspective;

[0013] Fig. 4 is an enlarged view of part A in Fig. 2;

[0014] Fig. 5 is a schematic view of the structure of the fixed plate on the support;

[0015] Fig. 6 is a schematic view of the structure of the support plate from one perspective;

[0016] Fig. 7 is a schematic view of the structure of the support plate from another perspective;

[0017] Fig. 8 is a schematic view of the connection relationship between the first elastic line and the second elastic line in use;

[0018] Fig. 9 is a schematic view of the structure of the second elastic line connected to the second mounting rod;

[0019] Fig. 10 is a schematic view of the structure of the box body in the open state according to the embodiment of the present application.

[0020] Mark explanation: 2-adjusting screw, 3-fixed plate, 31-mounting plate, 32-elastic sheet, 33-protrusion, 34-supporting block, 35-dog hand groove, 4-supporting plate, 41-upper protrusion, 42-lower protrusion, 43-left protrusion, 44-right protrusion, 45-first mounting rod, 46-second mounting rod, 48-groove, 49-pivot shaft, 71-box cover, 72-box body, 73-first mounting block, 74-second mounting block, 75-third mounting block, 76-insert block, 77-insert groove, 78-rotation shaft, 79-sliding groove, 8-supporting member, 81-connecting arm, 82-supporting arm, 9-first elastic line, 91-first end of the first elastic line, 92-second end of the first elastic line, 10-second elastic line, 101-first end of the second elastic line, 102-second end of the second elastic line. DETAILED DESCRIPTION

[0021] An exemplary structure of the adjustable mechanical drawing table according to the embodiment is shown in Figs. 1, 2 and 3. A fixed plate 3 is arranged at the top end of the support, and a notch corresponding to the supporting plate 4 is arranged on the fixed plate 3. The supporting plate 4 is pivotally connected to the fixed plate 3. Specifically, pivot shafts 49 are arranged at both ends of the bottom side of the supporting plate 4. Corresponding to each pivot shaft 49, a mounting hole is arranged on the fixed plate 3. The supporting plate 4 is mounted in the corresponding mounting hole through the pivot shaft 49, so as to realize the pivotal arrangement relative to the fixed plate 3. When the supporting plate 4 is adjusted to be in the same horizontal plane as the fixed plate 3, the supporting plate 4 can just block the notch.

[0022] The support frame specifically comprises columns connected to the four corners of the fixed plate 3. The structure of the support assembly is shown in FIGS. 1-3. A mounting plate 31 is arranged on the fixed plate 3 corresponding to the back of the support plate 4. To avoid interference between the support plate 4 and the mounting plate 31 when the support plate 4 is in a horizontal state, the mounting plate 31 in this embodiment is arranged below the fixed plate 3 and extends along the length direction of the fixed plate 3. The two ends of the mounting plate 31 are respectively provided with connecting plates which are connected between the corresponding ends of the fixed plate 3.

[0023] Referring to FIGS. 3, 4, and 5, the positioning part comprises a plurality of elastic pieces 32 arranged on the mounting plate 31 and spaced apart along the width direction of the fixed plate 3. The support piece 8 has a support arm 82 which can be inserted between two elastic pieces 32, and a connecting arm 81 which is respectively connected between the two ends of the support arm 82 and the support plate 4. As shown in the figures, the support arm 82 and the connecting arm 81 are arranged such that the entire support piece 8 has a U shape. One end of the connecting arm 81 is pivotally connected to the support plate 4.

[0024] As shown in FIG. 4, each elastic piece 32 is respectively provided with a protrusion 33 on both sides. The support arm 82 is limited between two elastic pieces 32 and corresponding two protrusions 33. Here, the protrusions 33 are arranged to improve the positioning effect of the support arm 82 between the two elastic pieces 32. The structure of the protrusions 33 is simple and easy to be formed on the elastic pieces 32. In addition, the cross section of the protrusions 33 is semicircular, which is beneficial to improve the effect of the support arm 82 being inserted between the two elastic pieces 32 or being removed from the two elastic pieces 32.

[0025] Continuing to refer to FIGS. 6 and 8, the first elastic line 9 and the second elastic line 10 in this embodiment are both in a closed loop shape with the first end connected to the second end. Both of them can use the elastic line in the prior art. The two ends of each first elastic line 9 are respectively connected to the upper and lower sides of the support plate 4 to form two parallel vertical auxiliary lines. The two ends of each second elastic line 10 are respectively connected to the left and right ends of the support plate 4 to form two parallel horizontal auxiliary lines. To improve the use effect of the first elastic line 9 and the second elastic line 10 and prolong their service life, the length of the first elastic line 9 and the second elastic line 10 in this embodiment is greater than two-thirds of the length of the support plate 4 and less than the length of the support plate 4.

[0026] As shown in FIGS. 6 and 7, one side of the support plate 4 is provided with an upper protrusion 41. The upper protrusions 41 are arranged along the length direction of the support plate 4. The other side of the support plate 4 is provided with a plurality of lower protrusions 42 arranged corresponding to each upper protrusion 41. The two ends of each first elastic line 9 are respectively sleeved on the upper protrusion 41 and the corresponding lower protrusion 42.

[0027] The left protrusions 43 are arranged on one end surface of the support plate 4, and the left protrusions 43 are a plurality of protrusions arranged at intervals along the width direction of the support plate 4. The right protrusions 44 are arranged on the other end surface of the support plate 4, and the right protrusions 44 are a plurality of protrusions arranged at intervals corresponding to the left protrusions 43. The two ends of each second elastic line 10 are respectively sleeved on the left protrusion 43 and the corresponding right protrusion 44.

[0028] In the embodiment, the interval between the two adjacent upper protrusions 41 and the interval between the two adjacent left protrusions 43 should be set to the same value, so that the student can control the size when using. In addition, the first elastic line 9 and the second elastic line 10 are arranged orthogonally.

[0029] The two ends of the first elastic line 9 in the embodiment can be sleeved on the upper protrusion 41 and the corresponding lower protrusion 42 respectively. The two ends of the second elastic line 10 can be sleeved on the left protrusion 43 and the corresponding right protrusion 44 respectively. All the first elastic lines 9 are arranged in one layer, and the second elastic lines 10 are arranged above or below the first elastic lines 9. The number of the first elastic lines 9 arranged between the upper protrusion 41 and the lower protrusion 42 and the number of the second elastic lines 10 arranged between the left protrusion 33 and the right protrusion 33 can be adjusted as needed.

[0030] In the embodiment, the first end 91 of the first elastic line is connected to one side of the support plate 4, and the first end 101 of the second elastic line is connected to one end of the support plate 4. After the drawing paper is fixed on the support plate 4, the first end 91 of the first elastic line is stretched and the two lines are located on both sides of the upper protrusion 33, and then the second end 92 of the first elastic line is sleeved on the corresponding lower protrusion 33. The operation of the second elastic line 10 is the same as that of the first elastic line 9.

[0031] Referring to FIGS. 6 and 7, a first mounting rod 45 is arranged on one side of the support plate 4 along the length direction of the support plate 4, and a second mounting rod 46 is arranged on one end of the support plate 4 along the width direction of the support plate 4. The first mounting rod 45 and the second mounting rod 46 are arranged on the back surface of the support plate 4. The first end 91 of each first elastic line is sleeved on the first mounting rod 45, and the first end 101 of each second elastic line is sleeved on the second mounting rod 46. The position of the first elastic line 9 on the first mounting rod 45 is adjustable, and the position of the second elastic line 10 on the second mounting rod 46 is adjustable.

[0032] Two protrusions 33 are arranged on the back surface of the left end of the support plate 4, and the two ends of the first mounting rod 45 are fixed on the corresponding protrusions 33, and a gap is formed between the first mounting rod 45 in the fixed state and the back surface of the support plate 4, allowing the first elastic line 9 to pass through. In addition, two protrusions 33 are arranged on the bottom side of the support plate 4, corresponding to the two ends thereof, and the two ends of the second mounting rod 46 are fixed on the corresponding protrusions 33, and a gap is also formed between the second mounting rod 46 in the fixed state and the back surface of the support plate 4, allowing the second elastic line 10 to pass through.

[0033] In actual use, the connection structure of the first elastic line 9 on the first mounting rod 45 is shown in FIG. 9. The first end 91 of the first elastic line is wound around the first mounting rod 45, and the second end 92 of the first elastic line is passed through the first end 91 of the first elastic line. By pulling the second end 92 of the first elastic line, the first end 91 of the first elastic line is connected to the first mounting rod 45. The position of the first elastic line 9 on the first mounting rod 45 can be easily adjusted. The mounting method of the second elastic line 10 on the second mounting rod 46 is the same as that of the first elastic line 9 on the first mounting rod 45.

[0034] When the first elastic line 9 and the second elastic line 10 are in an unused state, in order to improve the use effect of the support plate 4, the second end 92 of the first elastic line and the second end 102 of the second elastic line can also be sleeved on the corresponding upper protrusion 41 and right protrusion 44, and the first elastic line 9 and the second elastic line 10 are located on the back surface of the support plate 4. When it is necessary to adjust the support plate 4 to a horizontal state coplanar with the fixed plate 3, the support 8 is constrained between the first elastic line 9, the second elastic line 10 and the support plate 4 at this time, and it is beneficial to keep the paste on the back surface of the support plate 4.

[0035] Continuing to refer to FIGS. 1 and 2, in order to facilitate the removal of the support plate 4 in the horizontal state, thereby adjusting the pivot angle, a hand buckle groove 35 is arranged on the fixed plate 3 corresponding to the top side of the support plate 4, and a recess 48 corresponding to the arrangement of the hand buckle groove 35 is arranged on the support plate 4, and the hand buckle groove 35 and the recess 48 are matched.

[0036] An adjusting screw 2 is arranged on the side of the hand buckle groove 35 on the outside of the fixed plate 3, and the adjusting screw 2 is arranged along the width direction of the fixed plate 3 and is screwed on the fixed plate 3. Corresponding to the adjusting screw 2, screw holes are arranged on the support plate 4, and the screwing of the adjusting screw 2 and the screw holes constitutes the relative fixation between the support plate 4 and the fixed plate 3. In order to improve the use effect of the adjusting screw 2, the end of the adjusting screw 2 with the operation block is located on the outside of the fixed plate 3.

[0037] As shown in Fig. 5, two supporting blocks 34 are arranged in the middle of the fixed plate 3 to support the supporting plate 4 in a horizontal state. The supporting blocks 34 are arranged on both sides of the handhold groove 35.

[0038] When the supporting plate 4 is used as a drawing board, the adjusting screw 2 is rotated first to disconnect the adjusting screw 2 and the screw hole on the supporting plate 4, then the supporting plate 4 is rotated and is constrained by the first elastic wire 9 and the second elastic wire 10, and is inserted between the two elastic sheets 32 corresponding to the desired angle of inclination.

[0039] The storage box assembly is arranged on the support. The storage box assembly comprises a box body 72 fixedly arranged on the support and having a cavity, and a box cover 71 connected to the box body 72 to cover the box body 72. One side of the box cover 71 is pivotally connected to the box body 72 and can slide along the width direction of the box body 72. The other side of the box cover 71 is inserted into or detached from the box body 72 due to the sliding of the box cover 71.

[0040] Referring to Figs. 5, 6, 7, 8, 9 and 10, the box body 72 is arranged at one end of the fixed plate 3 along the width direction of the fixed plate 3. A first mounting block 73 is arranged on one side of the box cover 71, and a rotating shaft 78 is arranged on both sides of a second mounting block 74. Corresponding to the first mounting block 73, a second mounting block 74 is arranged on the corresponding side of the box body 72, and a sliding groove 79 corresponding to each rotating shaft 78 is arranged on both sides of the second mounting block 74. The rotating shaft 78 is inserted into the corresponding sliding groove 79, so that the box cover 71 can slide and pivot relative to the box body 72.

[0041] Corresponding to the insertion block 76, a third mounting block 75 is arranged on the corresponding side of the box body 72, and an insertion groove 77 is arranged on the third mounting block 75. The insertion block 76 is inserted into the insertion groove 77 due to the sliding of the box cover 71 towards the supporting plate 4, so that the box cover 71 covers the box body 72. The insertion block 76 is detached from the insertion groove 77 due to the sliding of the box cover 71 away from the supporting plate 4, so that the box body 72 can be opened by rotating the box body 72. In order to improve the effect of the insertion block 76, the insertion end of the insertion block 76 is chamfered. A partition is arranged in the box body 72 to divide the box body 72 into at least two storage cavities for separately placing drawing articles.

[0042] The adjustment of the inclined state of the support plate 4 can be realized by inserting the support 8 in the positioning part, the adjustment mode is simple, and the flexibility in use is improved. The box body 72 and the box cover 71 are arranged to store the articles, the box body 72 and the box cover 71 are connected through pivoting and sliding between one side and the other side, and are connected through insertion between the other side, so that the box cover 71 is fixed on the box body 72.

Claims

1. An adjustable mechanical drafting table, comprising a support frame and a support plate (4) pivotally mounted on the support frame, wherein drawing paper is laid and fixed on the front side of the support plate (4), characterized in that, The adjustable mechanical drafting table also includes: The support assembly includes a support member (8) pivotally mounted on the back of the support plate (4) and a plurality of positioning parts constructed on the bracket and arranged at intervals, wherein the bottom end of the support member (8) can be selectively inserted into any of the positioning parts. The first elastic line (9) and the second elastic line (10) are respectively disposed on the front side of the support plate (4). The first elastic line (9) is vertically connected between the upper and lower sides of the support plate (4) and is arranged in multiple intervals along the length direction of the support plate (4). The second elastic line (10) is horizontally connected between the left and right sides of the support plate (4) and is arranged in multiple intervals along the width direction of the support plate (4). Each first elastic line (9) and each second elastic line (10) are orthogonally arranged.

Images