Portable architectural drawing unfolding device

Abstract

The utility model belongs to the technical field of drawing unfolding devices, and particularly relates to a portable architectural drawing unfolding device which comprises an external protective shell, a cover plate and a rolling shaft, a torsional spring is arranged between the external protective shell and the cover plate, a spring device corresponding to the rolling shaft in position is installed on one side of the external protective shell, and the spring device is arranged on the other side of the external protective shell. A transverse plate is arranged on one side of the external protective shell, a mounting groove is formed in one side of the transverse plate, a containing groove is formed in one side of the external protective shell, and two folding frames are arranged in the containing groove; through cooperative use of the external protective shell, the transverse plate and the two folding frames, a drawing can be rapidly unfolded, after use, the winding shaft is driven by the elastic restoring force of the clockwork spring device to automatically wind the drawing, operation is easy and convenient, and in an actual use scene, the drawing can be automatically wound by the winding shaft. Workers need to quickly and conveniently unfold drawings to check and discuss, and the unfolding device can meet the requirements for timeliness and convenience.

Description

Technical Field

[0001] This utility model belongs to the technical field of drawing unfolding devices, specifically relating to a portable architectural drawing unfolding device. Background Technology

[0002] With the continuous development of the construction industry, architectural drawings play a crucial role in architectural design, construction, and review. In practice, to view and review architectural drawings more clearly and accurately, it is often necessary to unfold them flat. To meet this need, various architectural drawing unfolding devices have emerged on the market. These devices can, to some extent, help staff unfold the drawings for subsequent viewing and review.

[0003] However, most current architectural drawing unfolding devices are large and complex in structure. For example, some devices have multiple moving parts and a large base, making them extremely inconvenient to carry and transport, especially for staff who need to frequently move between different construction sites or office locations. The sheer size becomes a major inconvenience and burden. Furthermore, when not in use, the drawings need to be stored inside structures such as sleeves for protection. This additional protective structure further increases the amount of items that staff need to carry during transport, and the process of removing the drawings and connecting them to the unfolding device before use is complex and inconvenient. Utility Model Content

[0004] This utility model provides a portable architectural drawing unfolding device, which improves the convenience of unfolding and carrying architectural drawings.

[0005] This utility model provides the following technical solution: it includes an outer protective shell, a cover plate, and a winding shaft. A torsion spring is provided between the outer protective shell and the cover plate. A spring device corresponding to the position of the winding shaft is installed on one side of the outer protective shell. A horizontal plate is provided on one side of the outer protective shell. An installation groove is opened on one side of the horizontal plate. The drawing is installed between the winding shaft and the installation groove. A receiving groove is opened on one side of the outer protective shell. Two folding frames are provided in the receiving groove. The folding frames include a first connecting plate and a second connecting plate. Both first connecting plates are rotatably connected to the inner wall of the receiving groove. The two second connecting plates are respectively hinged to one end of the corresponding first connecting plate. The other end of both second connecting plates is hinged to one side of the horizontal plate.

[0006] Each of the two second connecting plates has a sliding groove, and an L-shaped insert rod is slidably connected to the inner wall of each of the two sliding grooves. Each of the two first connecting plates has a slot corresponding to the L-shaped insert rod at its end.

[0007] Each of the two first connecting plates has a groove on one side. One end of the L-shaped plug is engaged with the inner wall of the groove. A return spring is installed on one side of the L-shaped plug, and the return spring is installed on the inner wall of the corresponding slide groove.

[0008] Two limiting blocks are fixedly connected to one side of the horizontal plate, and the limiting blocks correspond to the hinge point of the second connecting plate.

[0009] The inner wall of the receiving groove has two clearance grooves, and the two limiting blocks are respectively engaged and connected to the inner wall of the corresponding clearance groove.

[0010] The cover plate has a first notch and a second notch on both sides, and a limiting protrusion is provided on one side of the horizontal plate. The limiting protrusion is engaged with the inner wall of the second notch.

[0011] The cover plate has two first magnetic plates embedded at its top, and the horizontal plate has two second magnetic plates embedded on one side, corresponding to the positions of the first magnetic plates. The first magnetic plates are magnetically attracted to the side of the corresponding second magnetic plates.

[0012] The beneficial effects of this utility model are: through the combined use of the external protective shell, the horizontal plate and the two folding frames, the drawings can be quickly unfolded. After use, the winding shaft automatically rewinds the drawings under the drive of the elastic restoring force of the spring device. The operation is simple and convenient. In actual use scenarios, such as at outdoor construction sites, workers need to quickly and conveniently unfold the drawings for viewing and discussion. This unfolding device can meet the requirements of timeliness and convenience. In addition, the device is small in size and easy to carry and transfer.

[0013] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention in its open state. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention in its open state. Figure 2 ;

[0016] Figure 3 for Figure 2 Enlarged diagram of section A in the middle;

[0017] Figure 4 for Figure 2 Enlarged diagram of section B;

[0018] Figure 5 This is a three-dimensional structural diagram of the present invention in its closed state.

[0019] In the diagram: 1. External protective shell; 11. Cover plate; 111. First notch; 112. Second notch; 12. Winding shaft; 121. Spring mechanism; 13. Receiving groove; 131. Relief groove; 14. First magnetic plate; 2. Horizontal plate; 21. Mounting groove; 22. Limiting block; 23. Limiting protrusion; 24. Second magnetic plate; 3. Folding frame; 31. First connecting plate; 311. Groove; 32. Second connecting plate; 321. Slide groove; 33. L-shaped insert rod; 34. Return spring. Detailed Implementation

[0020] Please see Figures 1-5 The present invention provides the following technical solution: including an outer protective shell 1, a cover plate 11 and a winding shaft 12, a torsion spring is provided between the outer protective shell 1 and the cover plate 11, a spring device 121 corresponding to the position of the winding shaft 12 is installed on one side of the outer protective shell 1, a horizontal plate 2 is provided on one side of the outer protective shell 1, an installation groove 21 is opened on one side of the horizontal plate 2, and the drawing is installed between the winding shaft 12 and the installation groove 21, and a receiving groove 13 is opened on one side of the outer protective shell 1, and two folding frames 3 are provided in the receiving groove 13. The folding frame 3 includes a first connecting plate 31 and a second connecting plate 32. The two first connecting plates 31 are rotatably connected to the inner wall of the receiving groove 13, and the two second connecting plates 32 are respectively hinged to one end of the corresponding first connecting plate 31, and the other end of the two second connecting plates 32 are both hinged to one side of the horizontal plate 2.

[0021] In this implementation scheme: When the outer protective shell 1 and the cover plate 11 are closed, they form a closed space to protect the drawing. One end of the drawing is locked to the winding shaft 12, which is clamped and fixed by a clamp inside the winding shaft 12. The winding shaft 12 rotates automatically via a spring mechanism 121. The winding shaft 12 and the spring mechanism 121 can rotate on the outer protective shell 1 to complete the initial winding of the UI drawing. Subsequently, the spring mechanism 121 is locked to the outer protective shell 1, keeping it fixed. The other end of the drawing is inserted into the mounting groove 21, which is fixed by a clamp in the mounting groove 21. Thus, when the horizontal plate 2 is pulled, the drawing is unfolded. The horizontal plate 2 is connected to the outer protective shell 1 via two folding brackets 3. The housing 1 houses the two folding frames 3 through the receiving slot 13. The horizontal plate 2 can be attached to one side of the outer protective housing 1. When in use, the horizontal plate 2 is pulled open, so that the two folding frames 3 and the drawings are unfolded. The first connecting plate 31 and the second connecting plate 32 change from a fitted state to an end docking state. After use, the two folding frames 3 are unlocked, the horizontal plate 2 moves closer to the outer protective housing 1, and the two folding frames 3 are put into the receiving slot 13. The winding shaft 12 completes the automatic winding of the drawings under the drive of the elastic restoring force of the spring device 121. The operation is simple and convenient. In actual use scenarios, such as at outdoor construction sites, workers need to quickly and conveniently unfold the drawings for viewing and discussion. This unfolding device can meet this requirement of timeliness and convenience.

[0022] Both second connecting plates 32 are provided with sliding grooves 321, and L-shaped insert rods 33 are slidably connected to the inner walls of both sliding grooves 321. Both first connecting plates 31 are provided with slots corresponding to the L-shaped insert rods 33 at their ends. When the first connecting plates 31 and the second connecting plates 32 are pulled apart for use, one end of the L-shaped insert rod 33 is inserted into the slot at the end of the first connecting plate 31, so that the first connecting plates 31 and the second connecting plates 32 can be spliced ​​into a stable straight rod for use, limiting the horizontal plate 2 and ensuring stable use when the drawing is unfolded. The sliding grooves 321 guide the L-shaped insert rods 33 to slide.

[0023] Each of the two first connecting plates 31 has a groove 311 on one side. One end of an L-shaped insert 33 is engaged with the inner wall of the groove 311. A return spring 34 is installed on one side of the L-shaped insert 33 and is installed on the inner wall of the corresponding slide groove 321. One end of the slide groove 321 is exposed. When the first connecting plate 31 and the second connecting plate 32 are folded and stored, the L-shaped insert 33 can be inserted into the groove 311 to prevent the L-shaped insert 33 from interfering with the folding of the first connecting plate 31 and the second connecting plate 32. The return spring 34 pushes the L-shaped insert 33, which increases the stability when the first connecting plate 31 and the second connecting plate 32 are spliced ​​and locked.

[0024] Two limiting blocks 22 are fixedly connected to one side of the horizontal plate 2. The limiting blocks 22 correspond to the hinge point of the second connecting plate 32. When the horizontal plate 2 is pulled apart from the outer protective shell 1, the two folding frames 3 are straightened and locked. The two limiting blocks 22 on the horizontal plate 2 hold the two folding frames 3 in place to prevent the rectangular frame formed by the outer protective shell 1, the horizontal plate 2 and the two folding frames 3 from shaking.

[0025] The inner wall of the receiving groove 13 has two clearance grooves 131, and two limiting blocks 22 are respectively engaged and connected to the inner wall of the corresponding clearance groove 131. When the two folding frames 3 are folded into the receiving groove 13, the horizontal plate 2 drives the two limiting blocks 22 to insert into the clearance groove 131. The clearance groove 131 makes way for the limiting blocks 22 to prevent the limiting blocks 22 from interfering with the storage of the outer protective shell 1 and the horizontal plate 2.

[0026] The cover plate 11 has a first notch 111 and a second notch 112 on both sides. The horizontal plate 2 has a limiting protrusion 23 on one side, which is engaged with the inner wall of the second notch 112. The cover plate 11 makes way for the drawing through the first notch 111, so that the drawing can extend out of the outer protective shell 1 and the cover plate 11. When the device is stored, the horizontal plate 2 is attached to one side of the outer protective shell 1, and the limiting protrusion 23 on one side of the horizontal plate 2 is engaged in the second notch 112, so that the horizontal plate 2 can limit the cover plate 11, prevent the cover plate 11 from accidentally flipping over, and ensure stability during use.

[0027] Two first magnetic plates 14 are embedded in the top of the cover plate 11, and two second magnetic plates 24 corresponding to the positions of the first magnetic plates 14 are embedded in one side of the horizontal plate 2. The first magnetic plates 14 are magnetically attracted to the corresponding side of the second magnetic plates 24. The cover plate 11 attracts the second magnetic plates 24 on one side of the horizontal plate 2 in the storage state through the two first magnetic plates 14, making the connection between the horizontal plate 2 and the outer protective shell 1 and the cover plate 11 more stable.

[0028] The working principle and usage process of this utility model are as follows: When using the drawing, by pulling the horizontal plate 2 to slide away from the outer protective shell 1, the horizontal plate 2 moves forward and the two folding frames 3 unfold, and the drawing unfolds. One end of the L-shaped insert 33 is inserted into the slot at the end of the first connecting plate 31, so that the first connecting plate 31 and the second connecting plate 32 can be spliced ​​into a stable straight rod for use, limiting the horizontal plate 2 and ensuring stable use when the drawing is unfolded. At this time, the outer protective shell 1, the horizontal plate 2 and the two folding frames 3 form a rectangular frame to support the drawing. After use, pull the two L-shaped inserts 33 to unlock the two folding frames 3, and then the horizontal plate 2 moves towards the outer protective shell 1. The winding shaft 12 completes the automatic winding of the drawing under the drive of the elastic restoring force of the spring device 121. The outer protective shell 1 stores the two folding frames 3 through the receiving slot 13, and the horizontal plate 2 can be placed against one side of the outer protective shell 1 to complete the storage. The operation is simple and convenient.

Claims

1. A portable architectural drawing unfolding device, comprising an outer protective shell (1), a cover plate (11), and a rewind shaft (12), wherein a torsion spring is provided between the outer protective shell (1) and the cover plate (11), characterized in that: A spring device (121) corresponding to the position of the winding shaft (12) is installed on one side of the outer protective housing (1). A horizontal plate (2) is provided on one side of the outer protective housing (1). An installation groove (21) is opened on one side of the horizontal plate (2). The drawing is installed between the winding shaft (12) and the installation groove (21). A receiving groove (13) is opened on one side of the outer protective housing (1). Two folding frames (3) are provided in the receiving groove (13). The folding frame (3) includes a first connecting plate (31) and a second connecting plate (32). The two first connecting plates (31) are rotatably connected to the inner wall of the receiving groove (13). The two second connecting plates (32) are respectively hinged to one end of the corresponding first connecting plate (31). The other end of the two second connecting plates (32) is hinged to one side of the horizontal plate (2).

2. A portable architectural drawing unroll device according to claim 1, wherein: Each of the two second connecting plates (32) is provided with a sliding groove (321), and an L-shaped plug (33) is slidably connected to the inner wall of each of the two sliding grooves (321). Each of the two first connecting plates (31) is provided with a slot corresponding to the L-shaped plug (33) at its end.

3. A portable architectural drawing unroller according to claim 2, wherein: Both first connecting plates (31) have a groove (311) on one side. One end of the L-shaped plug (33) is engaged with the inner wall of the groove (311). A return spring (34) is installed on one side of the L-shaped plug (33). The return spring (34) is installed on the inner wall of the corresponding slide groove (321).

4. A portable architectural drawing unroller according to claim 1, wherein: Two limiting blocks (22) are fixedly connected to one side of the horizontal plate (2), and the limiting blocks (22) correspond to the hinge point of the second connecting plate (32).

5. A portable architectural drawing unroller according to claim 4, wherein: The inner wall of the receiving groove (13) has two relief grooves (131), and the two limiting blocks (22) are respectively engaged and connected to the inner wall of the corresponding relief groove (131).

6. A portable architectural drawing unroll device according to claim 1, wherein: The cover plate (11) has a first notch (111) and a second notch (112) on both sides respectively. A limiting protrusion (23) is provided on one side of the horizontal plate (2), and the limiting protrusion (23) is engaged with the inner wall of the second notch (112).

7. A portable architectural drawing unroller according to claim 1, wherein: Two first magnetic plates (14) are embedded in the top of the cover plate (11), and two second magnetic plates (24) corresponding to the positions of the first magnetic plates (14) are embedded in one side of the horizontal plate (2). The first magnetic plates (14) are magnetically attracted to the side of the corresponding second magnetic plates (24).

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