CN221049373U - Folding bracket for art drawing board - Google Patents

Abstract

The utility model relates to an art drawing board folding bracket which comprises a central box, a supporting frame and a drawing board frame, wherein the central box is provided with a guide through hole, and a pair of shaft sleeves and two rotating shafts are arranged in the central box; the drawing board frame is longitudinally arranged in the two guide through holes in a penetrating mode, the supporting frame comprises a pair of front supporting frames and a rear supporting frame, the two front supporting frames are rotatably connected in the shaft sleeve, and the rear supporting frames are hinged to the rotating shaft; the rotary shaft in the central box is provided with a gear, the rear side of the drawing board frame is provided with a rack, the gear and the rack are meshed in the central box, and the outer side wall of the central box is provided with a lifting crank. This fine arts drawing board folding support through adjustable structural design, can provide stable support for the drawing board under its expansion state to can close the indentation adjustment through and receive to very little volume, not only be convenient for go out and carry, under non-use state moreover, can show the space that reduces indoor storage and vehicle transportation occupied.

Description

Folding bracket for art drawing board

Technical Field

The utility model relates to the field of painting equipment and teaching equipment, in particular to a folding bracket for an art drawing board.

Background

The drawing board support is a widely applicable drawing device, is used for oil painting and sketching, and is mainly used for outdoor sketching although the drawing board support is commonly seen in professional art classrooms or exhibition halls at present. The traditional drawing board support is attractive in appearance, texture and practicality, is formed by joggling square woods, is relatively light, is quite inconvenient to carry out due to fixed structure, and occupies more indoor storage and vehicle transportation space.

Disclosure of utility model

The technical problem to be solved by the utility model is to provide the art drawing board folding bracket, which can provide stable support for the drawing board in an unfolding state through an adjustable structural design, can be folded, retracted and converged to a small volume through folding, is convenient to carry out, and can remarkably reduce the occupied space for indoor storage and vehicle transportation in a non-use state.

The art drawing board folding support comprises a central box, a supporting frame rotatably connected to the central box and a drawing board frame penetrating through the central box, wherein the interior of the central box is hollow, a box cover is arranged on the front side of the central box, the lower surface of the central box is semi-closed, the front part of the lower surface is provided with a half lower panel, the rear part of the lower surface is hollow, the upper panel and the lower panel of the central box are aligned and provided with guide through holes matched with the shape of the drawing board frame, the middle and rear parts of the two side panels of the central box are symmetrically provided with a pair of shaft sleeves, and the rear parts of the two side panels of the central box are provided with two rotating shafts; the drawing board frame is longitudinally arranged in the two guide through holes in a penetrating mode, the supporting frame comprises a pair of front supporting frames which are positioned at the front side and used for being opened towards two sides, and a rear supporting frame which is positioned at the rear side and used for being opened towards the rear, the two front supporting frames are respectively connected in the two shaft sleeves in a rotating mode through protruding shafts positioned on the inner side frame wall of the upper portion, and the rear supporting frames are hinged to rotating shafts positioned below the central box; after the front and rear supporting frames are unfolded, the opening angle of the supporting frames is limited by taking two side walls and the rear wall of the hollowed-out part on the rear side of the lower surface of the central box as limiting baffles; the middle part of the rotating shaft positioned above the central box is fixedly provided with a gear, the rear side of the drawing board frame is provided with a rack, the gear and the rack are meshed with each other in the central box, and the outer side wall of the central box is provided with a lifting crank connected with the rotating shaft above the central box.

Further, the front end of the lifting crank is hinged with a foldable handle, a clamping rubber sleeve is sleeved on the handle, a return-preventing groove is formed in the upper concave part of the rear part of the central box, and the outer diameter of the clamping rubber sleeve on the handle is matched with the groove width of the return-preventing groove.

Further, a positioning column is arranged on the back support frame, and a handle is arranged on the side part of the back support frame; and the inner side wall of the front supporting frame is provided with a positioning hole matched with the positioning column.

Further, a broadside clamp for clamping the drawing board is arranged above the drawing board frame.

According to the art drawing board folding bracket, through the adjustable structural design, stable support can be provided for the drawing board in the unfolded state, and the drawing board can be folded, retracted and converged to a small volume through folding, so that the drawing board folding bracket is convenient to carry out, and in the non-use state, the occupied space for indoor storage and vehicle transportation can be remarkably reduced.

Drawings

The utility model relates to an art drawing board folding bracket which is further described with reference to the accompanying drawings:

FIG. 1 is a schematic view of a front view plane of a folding bracket of the art drawing board in a folded and housed state;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of a front view plane structure of the folding bracket of the art drawing board in unfolded and used state;

fig. 4 is a right side view of fig. 3.

In the figure:

1-a central box; 11-a box cover, 12-a shaft sleeve, 13-a rotating shaft and 14-a return prevention groove; 131-a gear;

2-supporting frames; 21-front support frames and 22-rear support frames; 211-convex shafts, 221-positioning columns and 222-handles;

3-drawing board frame; 31-racks, 32-broadside clamps;

4-lifting a crank; 41-a handle; 411-clamping the rubber sleeve.

Detailed Description

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The technical scheme of the present utility model will be further described by the following specific examples, but the scope of the present utility model is not limited to the following examples.

Embodiment 1: as shown in fig. 1 to 4, the art drawing board folding bracket comprises a central box 1, a supporting frame 2 rotatably connected to the central box 1, and a drawing board frame 3 penetrating through the central box 1, wherein the interior of the central box 1 is hollow, a box cover 11 is arranged at the front side of the central box 1, the lower surface of the central box 1 is semi-closed, a half lower panel is arranged at the front part of the lower surface, the rear part of the lower surface is hollow, guide through holes matched with the shape of the drawing board frame 3 are formed in the alignment of the upper panel and the lower panel of the central box 1, a pair of shaft sleeves 12 are symmetrically arranged at the middle rear part of the two side panels of the central box 1, and two rotating shafts 13 are arranged at the rear parts of the two side panels of the central box 1; the drawing board frame 3 is longitudinally arranged in the two guide through holes in a penetrating way, the supporting frame 2 comprises a pair of front supporting frames 21 which are positioned at the front side and used for opening towards two sides, and a rear supporting frame 22 which is positioned at the rear side and used for opening towards the rear, the two front supporting frames 21 are respectively connected in the two shaft sleeves 12 in a rotating way through a protruding shaft 211 positioned on the upper inner side frame wall, and the rear supporting frame 22 is hinged on a rotating shaft 13 positioned below the central box 1; after the front and rear supporting frames are unfolded, the opening angle of the supporting frames is limited by taking two side walls and the rear wall of the hollowed-out part on the rear side of the lower surface of the central box as limiting baffles; the middle part of the rotating shaft 13 positioned above in the central box 1 is fixedly provided with a gear 131, the rear side of the drawing board frame 3 is provided with a rack 31, the gear 131 and the rack 31 are meshed with each other in the central box 1, and the outer side wall of the central box 1 is provided with a lifting crank 4 connected with the rotating shaft 13 positioned above.

Embodiment 2: the front end of the lifting crank 4 of the art drawing board folding support is hinged with a foldable handle 41, a clamping rubber sleeve 411 is sleeved on the handle 41, a return-preventing groove 14 is formed in the upper concave part of the rear part of the central box 1, and the outer diameter of the clamping rubber sleeve 411 on the handle 41 is matched with the groove width of the return-preventing groove 14. The back support frame 22 is provided with a positioning column 221, and the side part of the back support frame 22 is provided with a handle 222; the inner side wall of the front supporting frame 21 is provided with a positioning hole matched with the positioning column 221. A broadside clamp 32 for clamping the drawing board is arranged above the drawing board frame 3.

When in use, the utility model is characterized in that: the front and rear supporting frames are opened, the hand-operated drawing board frame is lifted to a proper height, the folding crank is clamped into the anti-return groove, the drawing board is prevented from being placed on the central box and leaning against the drawing board frame, the inclined support and fixation of the drawing board are realized, and meanwhile, the front cover is opened to serve as a drawing tool placing table. When in storage: after the drawing board is disassembled, the hand drawing board frame descends, the lower part of the drawing board frame is buckled into the frame by the folding front supporting frame, the locating posts are anchored into the locating holes when the folding rear supporting frame is folded, the two front supporting frames are fixed, and the handles on the side parts of the portable rear supporting frame leave. The remaining structures and components are as described in embodiment 1, and a description thereof will not be repeated.

This fine arts drawing board folding support is through adjustable structural design, can provide stable support for the drawing board under its expansion state to can close the indentation adjustment through and receive to very little volume, not only be convenient for go out and carry, under non-use state moreover, can show the space that reduces indoor storage and vehicle transportation occupied.

The foregoing description illustrates the major features, principles, and advantages of the utility model. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments or examples, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing implementations or examples should be regarded as illustrative rather than limiting. The scope of the utility model is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (4)

1. An art drawing board folding support, characterized by: comprises a central box (1), a supporting frame (2) rotatably connected with the central box (1) and a drawing board frame (3) penetrating through the central box (1),

The inside of the central box (1) is hollow, a box cover (11) is arranged at the front side of the central box (1), the lower surface of the central box (1) is semi-closed, a half lower panel is arranged at the front part of the lower surface, the rear part of the lower surface is hollow, guide through holes matched with the shape of the drawing board frame (3) are formed in the upper panel and the lower panel of the central box (1) in alignment, a pair of shaft sleeves (12) are symmetrically arranged at the middle rear parts of the two side panels of the central box (1), and two rotating shafts (13) are arranged at the rear parts of the two side panels of the central box (1);

The drawing board frame (3) is longitudinally arranged in the two guide through holes in a penetrating mode, the supporting frame (2) comprises a pair of front supporting frames (21) which are arranged on the front side and used for being opened towards two sides, and a rear supporting frame (22) which is arranged on the rear side and used for being opened towards the rear, the two front supporting frames (21) are respectively connected in the two shaft sleeves (12) in a rotating mode through protruding shafts (211) which are arranged on the inner side frame wall of the upper portion, and the rear supporting frames (22) are hinged to rotating shafts (13) which are arranged below the central box (1); after the front and rear supporting frames are unfolded, the opening angle of the supporting frames is limited by taking two side walls and the rear wall of the hollowed-out part on the rear side of the lower surface of the central box as limiting baffles;

The center box (1) is internally provided with a gear (131) fixedly arranged in the middle of a rotating shaft (13) positioned above, the rear side of the drawing board frame (3) is provided with a rack (31), the gear (131) and the rack (31) are meshed with each other in the center box (1), and the outer side wall of the center box (1) is provided with a lifting crank (4) connected with the rotating shaft (13) positioned above.

2. The art drawing board folding bracket of claim 1, wherein: the front end of the lifting crank (4) is hinged with a foldable handle (41), a clamping rubber sleeve (411) is sleeved on the handle (41), a return-preventing groove (14) is formed in the upper portion of the rear portion of the central box (1) in a concave mode, and the outer diameter of the clamping rubber sleeve (411) on the handle (41) is matched with the groove width of the return-preventing groove (14).

3. The art drawing board folding bracket as claimed in claim 2, wherein: a positioning column (221) is arranged on the back support frame (22), and a handle (222) is arranged on the side part of the back support frame (22); the inner side wall of the front supporting frame (21) is provided with a positioning hole matched with the positioning column (221).

4. The art drawing board folding bracket as defined in claim 3, wherein: a broadside clamp (32) for clamping the drawing board is arranged above the drawing board frame (3).