CN113103821A - Portable geometry drawing device - Google Patents
Portable geometry drawing device Download PDFInfo
- Publication number
- CN113103821A CN113103821A CN202110397316.9A CN202110397316A CN113103821A CN 113103821 A CN113103821 A CN 113103821A CN 202110397316 A CN202110397316 A CN 202110397316A CN 113103821 A CN113103821 A CN 113103821A
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- Prior art keywords
- drawing board
- cover plate
- assembly
- main
- sliding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
- B44D3/18—Boards or sheets with surfaces prepared for painting or drawing pictures; Stretching frames for canvases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
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- Drawing Aids And Blackboards (AREA)
Abstract
The invention provides a portable geometric drawing device, comprising: the main drawing board (1) is internally provided with a cavity (11) communicated with the outside; the cover plate assembly (2) is hinged with the main drawing board (1) through a hinge assembly (3), and the cover plate assembly (2) has a storage state of being stored at the left side part and the right side part of the main drawing board (1) and a development state of being developed from the left side part and the right side part of the main drawing board (1) to the outside of the main drawing board (1); at least one sub drawing board (4) which is connected with the main drawing board (1) in a sliding way and can be accommodated in the cavity (11) of the main drawing board (1); when apron subassembly (2) is in the expanded condition, divide drawing board (4) accessible apron subassembly (2) to slide to the left and right side of main drawing board (1) and fix the position with at least a drawing face parallel and level of main drawing board (1) by cavity (11) of main drawing board (1). The invention can realize the expansion and the leveling of the drawing board, and has simple structure and convenient use.
Description
Technical Field
The invention relates to the field of painting, in particular to a portable geometric painting device.
Background
The portable geometry drawing device of prior art can only draw little geometric figure generally, when needs utilized portable drawing device to draw big geometric figure, current technique usually passes through the hinge concatenation with the polylith drawing board together, perhaps sets the drawing board to retractable's drawing board. But concatenation formula and telescopic drawing board position are difficult to fix, need fix with the help of other modes, and the not parallel and level or gap easily appear in the drawing board that splices together or the drawing board that stretches out moreover, are not convenient for draw, and the geometric figure precision of drawing can receive the influence.
In addition, when geometric images are drawn on the portable drawing board, a large number of tools such as a ruler, a T-square, a set square and the like are often used in a matched mode, and especially when a large number of parallel lines with different distances need to be drawn, a large number of rulers are needed. When the prior art is used for drawing parallel lines, different rulers are usually required to be operated by a plurality of people, the position adjustment is inconvenient during use, and the precision is difficult to guarantee.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a portable geometric drawing device capable of realizing large geometric image drawing.
To achieve the purpose, the technical scheme adopted by the invention is as follows: a portable geometric drawing device comprising: the main drawing board is internally provided with a cavity communicated with the outside; the cover plate assembly is hinged with the main drawing board through a hinge assembly and has a storage state of being stored at the left side part and the right side part of the main drawing board and an expansion state of expanding from the left side part and the right side part of the main drawing board to the outside of the main drawing board; at least one sub-drawing board which is connected with the main drawing board in a sliding mode and can be accommodated in the cavity of the main drawing board; when the cover plate assembly is in the unfolded state, the drawing board can slide to the left side and the right side of the main drawing board from the cavity of the main drawing board through the cover plate assembly and is fixed at a position which is flush with at least one drawing surface of the main drawing board.
Further, the main drawing board comprises: the main drawing board body is provided with the cavity; a plurality of main drawing board screw holes matched with the cover plate assembly screw holes; the fixing parts are fixedly arranged on the upper side and the lower side of the main drawing board body, the fixing parts are communicated with the cavity, and a first sliding rail facing the cavity is arranged on the bottom surface communicated with the cavity; and the back plate is arranged at the rear part of the main drawing board body.
Further, the drawing board that divides includes: dividing the board body; the sliding heads can be embedded into the first sliding rail and can slide along the first sliding rail.
Further, the cover plate assembly includes: the cover plate bodies are positioned on the upper side edge and the lower side edge of the main drawing board and hinged to the two ends of the fixing part; the cover plate body can rotate along a hinge shaft of the hinge assembly relative to the fixing part; the cover plate body is also provided with a cover plate component screw hole for a locking screw to pass through; when the cover plate assembly is in a storage state, one side, facing the main drawing board, of the cover plate body is provided with a second sliding rail; when the cover plate body rotates to be in a vertical state with the fixing part, the cover plate assembly is in a storage state, and the cover plate body is stored in the left side and the right side of the main drawing board and seals the cavity; when the cover plate body rotates to the position of the extension line of the fixing part, at the moment, the cover plate assembly is in an unfolded state, the second slide rail of the cover plate body is connected with the first slide rail on the bottom surface of the fixing part, and therefore the drawing board stored in the cavity of the main drawing board can slide out of the cavity along the first slide rail and slide to the left side edge and the right side edge of the main drawing board along the second slide rail.
Furthermore, a plurality of locking grooves which are vertically communicated with the second slide rail are also formed in the cover plate body; the sliding heads on the drawing board can be embedded into the second sliding rail and can slide along the second sliding rail; the drawing board divides the drawing board to pass through the sliding head by first slide rail slides extremely the second slide rail, the rethread the second slide rail slides in the locking groove to lock in the position of an at least drawing face parallel and level of main drawing board.
Furthermore, a pair of elastic check blocks is arranged between the second slide rail and the locking groove, and the distance between each pair of elastic check blocks is smaller than the width of the locking groove, so that the slide head of the drawing board is locked.
Further, the portable geometric drawing device further comprises: the slideway is fixed on the fixing part at the top edge of the main drawing board; the sliding block assembly is arranged on the sliding way in a sliding mode; the graduated scale assembly can be magnetically attracted on the main drawing board and the sub-drawing boards; a deformable connecting tube for connecting the slider assembly and the scale assembly.
Further, the slider assembly includes: the sliding block comprises a sliding block body, a sliding block ball head support and a sliding block ball head; the slider ball head support is fixedly arranged on the slider body, the slider ball head is rotatably arranged in the slider ball head support, and one end of the deformable connecting pipe is in threaded connection with the slider ball head, so that the deformable connecting pipe can be driven by the slider ball head to rotate freely.
Further, the scale assembly comprises: a first rule having a first length, defining a first outer edge and a first inner edge, the first rule having a first slide slot at one end; a second rule having a second length, defining a second outer edge and a second inner edge, the second rule having a second slide slot at one end; the second outer edge is in an opposite direction to the first outer edge, the second inner edge faces the first inner edge; the first connecting rod and the second connecting rod are respectively provided with a third sliding chute and a fourth sliding chute in the middle parts; the first connecting rod and the second connecting rod are spaced apart and can slide along the first sliding groove and the second sliding groove; and a plurality of connection mechanisms, each connection mechanism configured to rotatably connect each link to each of the first and second scales at a fixed position of the first and second scales; wherein at least one of said attachment mechanisms includes a locking structure for selectively fixing the angular position of the attachment mechanism and preventing rotation of the rotatable link relative to the attached first rule or second rule; selectively securing the first and second scales in a parallel position by selectively activating a locking structure.
Further, the scale assembly further comprises: the gradienter is arranged on at least one ruler and one connecting rod; the sliding connection assembly sequentially penetrates through the first connecting rod and the second connecting rod; the sliding connection assembly comprises a sliding connection ball head support and a sliding connection ball head, and the sliding connection ball head support can support one end of the sliding connection ball head to freely rotate on the sliding connection ball head support; the other end of the sliding connection ball head is in threaded connection with the other end of the deformable connecting pipe.
Compared with the prior art, the invention has the following beneficial effects:
the sub drawing board is arranged in the cavity of the main drawing board, and can be pulled out from the cavity through the sliding fit of the sliding rail and the sliding head. Push the locking groove with the sliding head and through the locking effect of elasticity dog, can realize dividing the parallel and level between drawing board and main drawing board drawing plane, improve the drawing precision.
In addition, the positions of the first connecting rod and the second connecting rod in the graduated scale assembly are adjusted, and the positions of the first connecting rod and the second connecting rod are fixed through the locking structure, so that parallel lines with different distances can be drawn, and the efficiency and the precision are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the portable geometric drawing device of the present invention with the cover assembly in an expanded state.
Fig. 2 is a schematic structural diagram of the portable geometric drawing device of the present invention when the cover plate assembly is in a storage state.
Fig. 3 is a schematic structural diagram of the portable geometric drawing device of the invention when the drawing board slides out completely.
Fig. 4 is a schematic structural diagram of the portable geometric drawing device of the present invention when the sub-drawing board is flush with the main drawing board.
Fig. 5 is a schematic diagram of a structure of a drawing board of the portable geometric drawing device of the invention.
FIG. 6 is a schematic diagram of the back structure of the portable geometric drawing device of the present invention.
Fig. 7 is a schematic structural diagram of a cover plate assembly of the portable geometry drawing device of the present invention.
Fig. 8 is a left side view of the portable geometric drawing device of the present invention with the cover assembly in the stowed condition.
Fig. 9 is an enlarged view of a portion a in fig. 8.
Fig. 10 is a schematic diagram of the construction of a scale assembly of the portable geometric drawing device of the present invention.
In the figure: 1. a main drawing board; 11. a cavity; 12. a main palette body; 13. a main drawing board screw hole; 14. a fixed part; 15. a first slide rail; 16. a back plate; 2. a cover plate assembly; 21. a cover plate body; 22. a second slide rail; 23. a locking groove; 24. an elastic stopper; 25. a cover plate assembly screw hole; 3. a hinge assembly; 4. dividing the drawing board; 41. dividing the board body; 42. sliding the head; 5. a slider assembly; 51. a slider body; 52. a slider ball head support; 53. a slider ball head; 6. a slideway; 7. a deformable connecting tube; 8. a scale assembly; 80. a sliding coupling assembly; 801. a ball head support is connected in a sliding manner; 802. a ball head is connected in a sliding way; 81. a first ruler; 811. a first outer edge; 812. a first inner edge; 813. a first chute; 82. a second ruler; 821. a second outer edge; 822. a second inner edge; 823. a second chute; 83. a first link; 831. a third chute; 84. a second link; 841. a fourth chute; 85. a connecting mechanism; 86. a level gauge; 9. and locking the screw.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1-6, the present invention provides a portable geometric drawing device comprising: the main drawing board 1 is internally provided with a cavity 11 communicated with the outside; a cover plate assembly 2 hinged with the main drawing board 1 through a hinge assembly 3, wherein the cover plate assembly 2 has a storage state of being stored at the left and right side parts of the main drawing board 1 and an expansion state of expanding from the left and right side parts of the main drawing board 1 to the outside of the main drawing board 1; at least one sub drawing board 4 which is connected with the main drawing board 1 in a sliding way and can be accommodated in the cavity 11 of the main drawing board 1; when the cover plate assembly 2 is in the unfolded state, the sub-drawing board 4 can slide from the cavity 11 of the main drawing board 1 to the left and right side parts of the main drawing board 1 through the cover plate assembly and is fixed at a position flush with at least one drawing surface of the main drawing board 1.
Main drawing board 1 includes: a main palette body 12 having a cavity 11, which is made of a magnetic material; a plurality of main palette screw holes 13 that fit the cover plate assembly screw holes; the fixing parts 14 are fixedly arranged on the upper side and the lower side of the main drawing board body 12, the fixing parts 14 are communicated with the cavity 11, and the bottom surface communicated with the cavity 11 is provided with a first slide rail 15 facing the cavity 11; the drawing board dividing board 4 is connected with the main drawing board 1 in a sliding mode through a first sliding rail 15; a back panel 16 disposed at the rear of the main palette body 12.
The drawing board 4 includes: a drawing board body 41 made of a magnetic material; and a plurality of sliders 42 which can be embedded in the first slide rails 15 and slide along the first slide rails 15.
As shown in fig. 7, the cap plate assembly 2 includes: the cover plate bodies 21 are positioned on the upper side and the lower side of the main drawing board 1 and hinged to two ends of the fixing part 14; the cover body 21 is rotatable relative to the fixing portion 14 along the hinge axis of the hinge assembly 3; the cover plate body 21 is also provided with a cover plate assembly screw hole 25 for the locking screw 9 to pass through; when the cover plate assembly 2 is in the storage state, one side of the cover plate body 21 facing the main drawing board 1 is provided with a second slide rail 22; when the cover plate body 21 rotates to be in a vertical state with the fixing part 14, the cover plate assembly 2 is in a storage state, and the cover plate body 21 is stored in the left and right side closed cavities 11 of the main drawing board 1; when the cover plate body 21 rotates to the extension line position of the fixing portion 14, at this time, the cover plate assembly is in the unfolded state, and the second slide rail 22 of the cover plate body 21 is connected with the first slide rail 15 on the bottom surface of the fixing portion 14, so that the drawing board 4 accommodated in the cavity 11 of the main drawing board 1 can slide out of the cavity 11 along the first slide rail 15 and slide to the left side and the right side of the main drawing board 1 along the second slide rail 22.
The cover plate body 21 is also provided with a plurality of locking grooves 23 which are vertically communicated with the second slide rails 22; the sliding heads 42 on the drawing board 4 can be embedded into the second sliding rail 22 and slide along the second sliding rail 22; the drawing board 4 slides from the first slide rail 15 to the second slide rail 22 through the slide head 42, and then slides into the locking groove 23 through the second slide rail 22, so as to be locked at a position where at least one drawing surface of the main drawing board 1 is flush.
A pair of elastic stoppers 24 is arranged between the second slide rail 22 and the locking groove 23, and the distance between each pair of elastic stoppers 24 is smaller than the width of the locking groove 23, so as to lock the slide head 42 of the drawing board 4.
In the present embodiment, the number of locking grooves 23, the number of pairs of elastic stoppers 24, and the number of sliders 42 are in a corresponding relationship. When the cover plate assembly 2 is in the storage state, the locking screw 9 penetrates through the cover plate assembly screw hole 25 and the main drawing board screw hole 13, so that the cover plate assembly 2 is fixed with the main drawing board 1, and the storage and the fixation of the cover plate assembly 2 are realized.
As shown in fig. 4, the portable geometric drawing device of the present invention further includes: the slideway 6 is fixed on the top edge fixing part 14 of the main drawing board 1; the sliding block assembly 5 is arranged on the sliding way 6 in a sliding mode; the graduated scale assembly 8 can be magnetically attracted on the main drawing board 1 and the sub-drawing board 4; and the deformable connecting pipe 7 is used for connecting the sliding block assembly 5 and the graduated scale assembly 8 and has a telescopic function.
As shown in fig. 8, the slider assembly 5 includes a slider body 51, a slider ball support 52 and a slider ball 53, the slider ball support 52 is fixedly disposed on the slider body 51, the slider ball 53 is rotatably disposed in the slider ball support 52, and one end of the deformable connecting pipe 7 is in threaded connection with the slider ball 53, so that the deformable connecting pipe 7 can rotate freely under the driving of the slider ball 53.
As shown in fig. 8-10, the scale assembly 8 comprises: a first rule 81 having a first length defining a first outer edge 811 and a first inner edge 812, the first rule 81 having a first runner 813 at one end; a second ruler 82 having a second length, defining a second outer edge 821 and a second inner edge 822, the second ruler 82 having a second runner 823 at one end, the second outer edge 821 being in a direction opposite to the first outer edge 811, the second inner edge 822 facing the first inner edge 812; the first outer edge 811 and the second outer edge 821 each have a graduation mark and at least one of the rulers has an angle graduation mark; a first link 83 and a second link 84 each having a first end rotatably connected to the first ruler 81 and a second end rotatably connected to the second ruler 82, the first link 83 and the second link 84 being provided at the middle portions thereof with a third slide groove 831 and a fourth slide groove 841, respectively; the first link 83 and the second link 84 are spaced apart and slidable along the first and second runners 813, 823 to effect connection at different locations of the first and second rulers 81, 82, each link having a link length and defining a selectable spacing between the first and second rulers 81, 82 such that the first and second outer edges have an adjustable parallel distance therebetween; and a plurality of connection mechanisms 85, each configured to rotatably connect each link to each of the first and second rules 81, 82 at a fixed position of the first and second rules 81, 82, wherein at least one of the connection mechanisms 85 includes a locking structure (not shown in the drawings), which in this embodiment may be a bolt structure or the like, for selectively fixing an angular position of the connection mechanism 85 and preventing the rotatable link from rotating relative to the connected first or second rule 81, 82; by selectively activating the locking mechanism, the first and second scales 81, 82 are selectively secured in a parallel position, thereby facilitating straight line drawing of a parallel distance.
The scale assembly 8 further comprises: a level 86 disposed on at least one of the ruler and one of the links; the sliding connection assembly 80 sequentially penetrates through the first connecting rod 83 and the second connecting rod 84, the sliding connection assembly 80 comprises a sliding connection ball head support 801 and a sliding connection ball head 802, and one end of the sliding connection ball head 802 can be supported by the sliding connection ball head support 801 to rotate freely thereon; the other end of the sliding connection ball head 802 is in threaded connection with the other end of the deformable connection pipe 7.
The working process of the portable drawing device is as follows: as shown in fig. 2, when the cover plate assembly is in the storage state, the locking screw 9 is unscrewed by a screwdriver, the cover plate assembly 2 is unfolded from the vertical position to the horizontal position under the action of the hinge assembly 3, the drawing board 4 is pulled out from the cavity 11 along the first slide rail 15 and is completely pulled out along the second slide rail 22, then the drawing board 4 is pushed into the locking groove 23, and the drawing plane of the drawing board 4 is locked to the position flush with at least one drawing plane of the main drawing board 1 under the action of the elastic stopper 24.
When parallel lines need to be drawn in the drawing process, the sliding block component 5 slides to a proper position along the slide way 6, the deformable connecting pipe 7 and the graduated scale component 8 are rotated and magnetically attracted at a target position, and the first ruler 81 and the second ruler 82 are selectively fixed at a certain parallel position by activating the locking structure of the at least one connecting mechanism 85, so that the drawing of different parallel distance lines is realized.
When the drawing board 4 needs to be accommodated in the cavity 11 after drawing is finished, firstly, the drawing board 4 is pushed backwards into the second slide rail 22 and completely slides into the cavity 11 along the second slide rail 22 and the first slide rail, and then the cover plate component 2 is accommodated to a vertical position from a horizontal position under the action of the hinge component 3; and a locking screw 9 penetrates through the cover plate assembly screw hole 25 and the main drawing board screw hole 13, so that the cover plate assembly 2 is fixed with the main drawing board 1, and the cover plate assembly 2 is accommodated and fixed.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the content of the present invention as long as it does not depart from the gist of the present invention.
Claims (10)
1. A portable geometry drawing device, characterized in that: the method comprises the following steps:
the main drawing board (1) is internally provided with a cavity (11) communicated with the outside;
a cover assembly (2) hinged with the main drawing board (1) through a hinge assembly (3), wherein the cover assembly (2) has a storage state of being stored at the left and right side parts of the main drawing board (1) and a spreading state of spreading from the left and right side parts of the main drawing board (1) to the outside of the main drawing board (1);
at least one sub-drawing board (4) which is connected with the main drawing board (1) in a sliding way and can be accommodated in the cavity (11) of the main drawing board (1);
when the cover plate component (2) is in the unfolded state, the drawing board dividing board (4) can pass through the cover plate component (2) and slide to the left side and the right side of the main drawing board (1) from the cavity (11) of the main drawing board (1) and is fixed at a position flush with at least one drawing surface of the main drawing board (1).
2. A portable geometric drawing device according to claim 1, wherein: the main drawing board (1) comprises:
a main palette body (12) having the cavity (11);
a plurality of main palette screw holes (13) that mate with the cover plate assembly screw holes;
the fixing parts (14) are fixedly arranged on the upper side and the lower side of the main drawing board body (12), the fixing parts (14) are communicated with the cavity (11), and the bottom surface communicated with the cavity (11) is provided with a first sliding rail (15) facing the cavity (11);
and a back plate (16) arranged at the rear part of the main drawing board body (12).
3. A portable geometric drawing device according to claim 2, wherein: the drawing board (4) comprises:
a picture dividing board body (41);
a plurality of sliders (42) which can be embedded in the first slide rail (15) and slide along the first slide rail (15).
4. A portable geometric drawing device according to claim 3, wherein: the cover plate assembly (2) comprises:
the cover plate bodies (21) are positioned on the upper side and the lower side of the main drawing board (1) and hinged to the two ends of the fixing part (14); the cover body (21) is rotatable relative to the fixed part (14) along the hinge axis of the hinge assembly (3); the cover plate body (21) is also provided with a cover plate assembly screw hole (25) for the locking screw (9) to pass through; when the cover plate assembly (2) is in a storage state, one side, facing the main drawing board (1), of the cover plate body (21) is provided with a second sliding rail (22);
when the cover plate body (21) rotates to be in a vertical state with the fixing part (14), the cover plate assembly (2) is in a storage state, and the cover plate body (21) is stored at the left side and the right side of the main drawing board (1) and closes the cavity (11);
when the cover plate body (21) rotates to be located at the position of an extension line of the fixing part (14), at the moment, the cover plate assembly (21) is in an unfolded state, the second slide rail (22) of the cover plate body (21) is connected with the first slide rail (15) on the bottom surface of the fixing part (14), and therefore the drawing board (4) contained in the cavity (11) of the main drawing board (1) can slide out of the cavity (11) along the first slide rail (15) and slide to the left side and the right side of the main drawing board (1) along the second slide rail (22).
5. A portable geometric drawing device according to claim 4, wherein: the cover plate body (21) is also provided with a plurality of locking grooves (23) which are vertically communicated with the second slide rails (22); a plurality of sliding heads (42) on the drawing board (4) can be embedded into the second sliding rail (22) and slide along the second sliding rail (22); the drawing board dividing board (4) is characterized in that the sliding head (42) is slid to the second sliding rail (22) through the first sliding rail (15), and then the second sliding rail (22) is slid into the locking groove (23), so that the drawing board dividing board is locked at the position of at least one drawing surface of the main drawing board (1) in a flush mode.
6. A portable geometric drawing device according to claim 5, wherein: a pair of elastic stoppers (24) is arranged between the second slide rail (22) and the locking groove (23), and the distance between each pair of elastic stoppers (24) is smaller than the width of the locking groove (23) so as to lock the slide head (42) of the drawing board (4).
7. A portable geometric drawing device according to claim 1, wherein: further comprising:
the slide rail (6) is fixed on the fixing part (14) at the top edge of the main drawing board (1);
the sliding block assembly (5) is arranged on the sliding way (6) in a sliding mode;
the graduated scale assembly (8) can be magnetically attracted on the main drawing board (1) and the sub-drawing board (4);
a deformable connecting tube (7) for connecting the slider assembly (5) and the scale assembly (8).
8. A portable geometric drawing device according to claim 7, wherein: the slider assembly (5) comprises: the sliding block comprises a sliding block body (51), a sliding block ball head support (52) and a sliding block ball head (53); the slider ball head support (52) is fixedly arranged on the slider body (51), the slider ball head (53) is rotatably arranged in the slider ball head support (52), and one end of the deformable connecting pipe (7) is in threaded connection with the slider ball head (53), so that the deformable connecting pipe (7) can be driven by the slider ball head (53) to rotate freely.
9. A portable geometric drawing device according to claim 7, wherein: the scale assembly (8) comprises:
a first rule (81) having a first length, defining a first outer edge (811) and a first inner edge (812), the first rule (81) having a first runner (813) at one end;
a second ruler (82) having a second length defining a second outer edge (821) and a second inner edge (822), the second ruler (82) having a second runner (823) at one end; said second outer edge (821) being in an opposite direction to said first outer edge (811), said second inner edge (822) facing said first inner edge (812);
a first connecting rod (83) and a second connecting rod (84), each connecting rod having a first end rotatably connected to the first ruler (81) and a second end rotatably connected to the second ruler (82), the first connecting rod (83) and the second connecting rod (84) being provided at the middle thereof with a third sliding groove (831) and a fourth sliding groove (841), respectively; the first connecting rod (83) and the second connecting rod (84) are spaced apart and can slide along the first sliding groove (813) and the second sliding groove (823);
and a plurality of connection mechanisms (85), each configured for rotatably connecting each link to each of the first and second rules (81, 82) at a fixed position of the first and second rules (81, 82);
wherein at least one of said connection mechanisms (85) comprises a locking structure for selectively fixing the angular position of the connection mechanism (85) and preventing the rotatable link from rotating relative to the connected first rule (81) or second rule (82); the first and second rulers (81, 82) are selectively fixed in a parallel position by selectively activating a locking structure.
10. A portable geometric drawing device according to claim 9, wherein: the scale assembly (8) further comprises:
a level (86) disposed on the at least one ruler and one link;
a sliding coupling assembly (80) passing through the first link (83) and the second link (84) in sequence; the slip joint assembly (80) comprises a slip joint ball head support (801) and a slip joint ball head (802), wherein the slip joint ball head support (801) can support one end of the slip joint ball head (802) to freely rotate on the slip joint ball head support; the other end of the sliding connection ball head (802) is in threaded connection with the other end of the deformable connecting pipe (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021102283359 | 2021-03-02 | ||
| CN202110228335 | 2021-03-02 |
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| Publication Number | Publication Date |
|---|---|
| CN113103821A true CN113103821A (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110397316.9A Pending CN113103821A (en) | 2021-03-02 | 2021-04-14 | Portable geometry drawing device |
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| CN (1) | CN113103821A (en) |
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| GB191307968A (en) * | 1912-06-13 | 1913-09-18 | Alexandre Cuvelier | Improvements in and relating to Drawing Apparatus. |
| CN2494763Y (en) * | 2001-09-07 | 2002-06-12 | 岳俊清 | Multipurpose ruler |
| CN206836567U (en) * | 2017-01-11 | 2018-01-05 | 永康市山风校具有限公司 | A kind of desk with expansion plate |
| CN208469404U (en) * | 2017-10-20 | 2019-02-05 | 湖北师范大学 | A kind of adjustable drawing board of ring skill design |
| CN208411216U (en) * | 2018-03-30 | 2019-01-22 | 成都航空职业技术学院 | A kind of scalable ruler with compasses one |
| CN211892707U (en) * | 2020-03-26 | 2020-11-10 | 郑州铁路职业技术学院 | Folding drawing frame for environmental art design |
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Application publication date: 20210713 |
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