Easel supporting structure and easel

Abstract

The utility model discloses an easel supporting structure and an easel. The easel supporting structure comprises a support used for bearing the easel and moving wheels installed at the bottom of the support. Supporting square pipes are arranged on the left side and the right side of the bottom of the support, one end of each supporting square pipe is provided with an opening groove used for installing a moving wheel, the upper wall and the lower wall of the front end of each supporting square pipe are not provided, the opening groove formed by the left wall and the right wall is reserved, the left wall and the right wall of each opening groove are in bilateral symmetry, and an arc-shaped structure is arranged at the bottom close to the front end of each square pipe. The positions, close to the upper portion, of the left wall and the right wall are connected through a shaft, the moving wheels are installed on the shaft, the radius of each moving wheel is smaller than the distance from the center of the shaft to the lower wall of the supporting square pipe, and in the process that the support inclines towards the advancing direction, the edges of the arc-shaped structures do not make contact with the ground. When the easel is static, the bottom face of the supporting square pipe serves as a bearing face, and the problems that in the prior art, moving wheels serve as supporting pieces, the stress area is small, the easel is unstable, and the moving wheels are prone to being damaged can be solved.

Description

Technical Field

[0001] The utility model relates to the field of painting tools, and more specifically, to an easel support structure and an easel. Background Art

[0002] In recent years, a tow-box easel has become popular among painting students or art practitioners. The tow-box easel generally includes a bracket, a drawing board and a box body, such as a box-type easel disclosed in CN214984571U, wherein one side of the box body is connected to the drawing board to form a bracket for the drawing board to support the drawing board, and a box opening is provided on the side wall of the box body connected to the drawing board, and the drawing board and the box body can cover the box opening when they are closed together, and a handle is provided on the box body.

[0003] The bottom of the box is usually equipped with wheels to facilitate the movement of the box-type easel. However, when supporting the easel, the wheels serve as the main supporting parts, and the contact area between the wheels and the ground is small and unstable. After long-term use, the connecting parts between the wheels and the supporting frame will also deform due to long-term high pressure.

[0004] In order to solve this problem, the top of the universal wheel is installed at the bottom of the bracket through a hinge. When it needs to move, the top of the universal wheel is rotated to make the universal wheel contact with the ground. When it moves to the destination, the top of the universal wheel is rotated in the opposite direction to fold the universal wheel upward. At this time, the box bracket is in contact with the ground. At this time, the bottom of the box bracket serves as the main support. However, the hinge on the top of the universal wheel of this design is prone to loosening due to long-term rotation. Sometimes when the box is dragged, the universal wheel is also prone to flip up, and the hinge is prone to malfunction. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an easel supporting structure.

[0006] The technical solution provided by the utility model is as follows:

[0007] A supporting structure for an easel, comprising a bracket for carrying the easel, and moving wheels installed at the bottom of the bracket;

[0008] A supporting square tube is provided on the left and right sides of the bottom of the bracket, and an open groove for installing a moving wheel is opened at one end of the supporting square tube. The upper wall and the lower wall at the front end of the supporting square tube are missing, leaving the open groove formed by the left wall and the right wall. The left wall and the right wall of the open groove are symmetrical on the left and right, and an arc structure is provided at the bottom near the front end of the square tube. The left wall and the right wall are connected by a shaft near the top, and the moving wheel is installed on the shaft. The radius of the moving wheel is smaller than the distance from the center of the shaft to the lower wall of the supporting square tube. When the bracket tilts in the forward direction, the edge of the arc structure does not contact the ground.

[0009] Among them, the bottom of the moving wheel and the bottom surface of the square tube are on the same horizontal plane, the edge of the arc structure is opposite to the middle of the moving wheel, and when the bracket is tilted in the forward direction, the projection of the arc structure along the shaft on the moving axis does not exceed the outer circumference of the moving wheel.

[0010] The main body of the bracket includes a left-right symmetrical main rod, a left-right symmetrical supporting square tube and a connecting rod.

[0011] The supporting square tubes are parallel to each other.

[0012] The supporting square tubes are vertically connected with connecting rods.

[0013] The main rod is vertically installed and connected to the upper wall of the supporting square tube and is perpendicular to the supporting square tube. The main rod is installed behind the moving wheel.

[0014] The top of the main rod is connected with a handle.

[0015] Wherein, the main rod, supporting square tube and connecting rod are all square tube structures.

[0016] Wherein, the moving wheel is detachably rotatably connected to the shaft.

[0017] An easel, comprising the easel supporting structure as described above,

[0018] It also includes a box body installed on one side of the bracket, and one side of the box body is installed on the one side of the bracket through a hinge.

[0019] Among them, it includes the easel support structure mentioned above;

[0020] The main rod is hinged by an upper rod and a lower rod through a hinge, and the upper rod can be folded downward to a side away from the box body;

[0021] A duckbill buckle for fixing the lower rod and the upper rod is provided between the lower rod and the upper rod, or / and a limiting member and a locking member cooperating with each other are respectively provided on the lower rod and the upper rod.

[0022] Among them, the limiting member is a cross bar connected between the upper rods on the left and right sides, and the locking member is a steel wire locking member, which is sequentially provided with a left connecting part, a locking part and a right connecting part, the left connecting part is installed on the upper rod on the left side through a torsion spring, and the right connecting part is installed on the upper rod on the right side through a torsion spring, and the locking part cooperates with the cross bar, and when the locking part is stuck on the cross bar, the upper rod and the lower rod are in a straight line.

[0023] Among them, the upper rod of the main rod is provided with a flippable drawing board support, and the drawing board support is a U-shaped frame composed of square tubes. The drawing board support is provided with a plurality of protrusions for limiting the drawing board.

[0024] Wherein, the upper rod of the main rod is provided with a flippable drawing board support frame, and the drawing board support frame is formed by bending a steel wire in one piece.

[0025] Compared with the prior art, the easel support structure provided by the utility model includes a bracket for carrying an easel and a moving wheel installed at the bottom of the bracket; a supporting square tube is provided on the left and right sides of the bottom of the bracket, an open groove for installing the moving wheel is opened at one end of the supporting square tube, the upper wall and the lower wall of the front end of the supporting square tube are missing, leaving the open groove formed by the left wall and the right wall, the left wall and the right wall of the open groove are symmetrical, and an arc structure is provided at the bottom near the front end of the square tube, the left wall and the right wall are connected by a shaft near the top, the moving wheel is installed on the shaft, the radius of the moving wheel is smaller than the distance from the center of the shaft to the lower wall of the supporting square tube, and the edge of the arc structure does not contact the ground during the tilting of the bracket in the forward direction. When stationary, the bottom surface of the supporting square tube is used as a load-bearing surface, which can solve the problem that the existing technology uses the moving wheel as a support, the force-bearing area is small, the easel is unstable, and the moving wheel is easily damaged.

[0026] At the same time, the utility model provides an easel using the easel supporting structure, which has a stable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 for Figure 1 A partial enlarged view of;

[0030] Figure 3 It is a partial schematic diagram of the moving wheels of the utility model when moving forward;

[0031] Figure 4 Another embodiment of the utility model;

[0032] Figure 5 for Figure 4 B is a partial enlarged view;

[0033] Figure 6 It is a schematic diagram of the local structure of the foldable main rod;

[0034] Figure 7 It is a partial structural schematic diagram of another embodiment of the foldable main rod;

[0035] Figure 8 for Figure 7 A partial enlarged view of C;

[0036] Bracket 01, moving wheel 02, supporting square tube 101, opening slot 10101, arc structure 10102, shaft 102, main rod 103, connecting rod 104, handle 108, box body 03, first hinge 301, upper rod 10301, lower rod 10302, second hinge 10303, duckbill buckle 10304, limiter 109, locking member 105, left connecting part 10501, locking part 10502, right connecting part 10503, drawing board support member 106, drawing board support frame 107. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions in the utility model, the technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0041] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present utility model can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the present utility model without affecting the effects and purposes that can be achieved by the present utility model.

[0042] The embodiments of the present invention are written in a progressive manner.

[0043] like Figures 1 to 8 As shown, an easel support structure includes a bracket 01 for carrying an easel, and a moving wheel 02 installed at the bottom of the bracket 01;

[0044] Support square tubes 101 are provided on the left and right sides of the bottom of the bracket 01, and an open groove 10101 for installing the moving wheel 02 is opened at one end of the support square tube 101. The upper wall and the lower wall at the front end of the support square tube 101 are missing, leaving the open groove 10101 formed by the left wall and the right wall. The left wall and the right wall of the open groove 10101 are symmetrical on the left and right, and an arc structure 10102 is provided at the bottom near the front end of the square tube. The left wall and the right wall are connected by a shaft 102 near the top, and the moving wheel 02 is installed on the shaft 102. The radius of the moving wheel 02 is smaller than the distance from the center of the shaft 102 to the lower wall of the support square tube 101. When the bracket 01 tilts in the forward direction, the edge of the arc structure 10102 does not contact the ground.

[0045] The utility model provides an easel support structure, which is particularly suitable for a tow-box easel, comprising a bracket 01 for carrying an easel, and a moving wheel 02 installed at the bottom of the bracket 01. Different from the prior art, the moving wheel 02 is not installed on the bottom surface of the bracket 01, or on the side of the bottom, but is installed in an open groove 10101 of a supporting square tube 101. The left wall and the right wall are connected near the top by a shaft 102. The moving wheel 02 is installed on the shaft 102. The radius of the moving wheel 02 is smaller than the distance from the center of the shaft 102 to the lower wall of the supporting square tube 101. When the bracket 01 is upright, the bottom surface of the moving wheel 02 does not contact the ground. The moving wheel 02 does not serve as the load-bearing structure of the easel. The bottom surface of the supporting square tube 101, i.e., the lower wall, contacts the ground. At this time, the force-bearing area is large, and the bracket 01 is more stable. At the same time, the shaft 102 of the moving wheel 02 is not easily damaged due to long-term high pressure. At the same time, the left and right walls of the opening slot 10101 are symmetrical, and an arc structure 10102 is provided at the bottom near the front end of the square tube. When the bracket 01 tilts forward, the edge of the arc structure 10102 does not contact the ground. At this time, when the tow-box easel needs to be moved, when the bracket 01 tilts forward, the supporting square tube 101 rotates relative to the moving wheel 02. During the rotation, the edge of the arc structure 10102 does not contact the ground, and will not hinder the movement of the tow-box easel.

[0046] In order to achieve the above purpose, the bottom of the moving wheel 02 and the bottom surface of the supporting square tube 101 are on the same horizontal plane. The edge of the arc structure 10102 is opposite to the middle of the moving wheel 02. When the bracket 01 is tilted in the forward direction, the projection of the arc structure 10102 along the shaft 102 on the moving axis does not exceed the outer periphery of the moving wheel. This ensures that the supporting square tube 101 will not cause any obstruction during the forward movement of the bracket 01. The distance from the center of the shaft 102 to the front end of the supporting square tube 101 is smaller than the radius of the moving wheel 02. At this time, when the bracket 01 is tilted in the forward direction, the moving wheel 02 always protrudes in front of the supporting square tube 101.

[0047] The main body of the bracket 01 of the utility model includes a left-right symmetrical main rod 103, a left-right symmetrical supporting square tube 101 and a connecting rod 104.

[0048] The supporting square tubes 101 are parallel to each other.

[0049] The supporting square tubes 101 are vertically connected with connecting rods 104.

[0050] The main rod 103 is vertically installed and connected to the upper wall of the supporting square tube 101, and is perpendicular to the supporting square tube 101. The main rod 103 is installed behind the moving wheel 02.

[0051] A handle 108 is connected to the top of the main rod 103 .

[0052] In order to further provide stability for the easel, each main body of the bracket 01 of the utility model is composed of a left-right symmetrical main rod 103 and a supporting square tube 101, and the main rod 103 and the supporting square tube 101 are perpendicular to each other. The main rod 103 is installed behind the moving wheel 02, and the main rod 103 and the supporting square tube 101 form an L-shaped structure on one side of the moving wheel 02, which is more stable. This design can replace the triangular wheels used for climbing ladders on the market, has strong ladder climbing and obstacle crossing capabilities, and has a simple and stable structure.

[0053] A connecting rod 104 is provided between the supporting square tubes 101 , and the main rod 103 , the supporting square tubes 101 and the connecting rod 104 are perpendicular to each other to form a stable main body of the bracket 01 .

[0054] A handle 108 is connected to the top of the main rod 103 to facilitate the user to drag the bracket 01.

[0055] As an optional embodiment, the main rod 103, the supporting square tube 101 and the connecting rod 104 of the utility model are all square tube structures. The surface of the square tube is flat, and the contact surface between the supporting square tube 101 and the ground is flat, which can disperse the gravity of the easel, increase the friction between the supporting square tube 101 and the ground, and make the easel more stable. At the same time, the main rod 103, the supporting square tube 101 and the connecting rod 104 are all square tube structures, which can be connected by welding or screws, and are stable and not easy to loosen.

[0056] The moving wheel 02 of the utility model is detachably rotatably connected to the shaft 102, which is convenient for inspection and replacement of the moving wheel 02.

[0057] The utility model also provides an easel, comprising the easel supporting structure as described above,

[0058] It also includes a box body 03 installed on one side of the bracket 01 , and one side of the box body 03 is installed on the one side of the bracket 01 through a first hinge 301 .

[0059] Box 03 can provide storage space for use and can hold some painting tools. When using the easel, the side of box 03 that is not installed with bracket 01 can be pulled open, so that box 03 can rotate around one side of bracket 01. However, when box 03 is perpendicular to bracket 01, it stops opening. The upper cover of box 03 can be opened or closed as an operating table.

[0060] In order to solve the storage problem of the trailer-type easel, the traditional trailer-type easel, Bracket 01 is often made of telescopic tubes. There is a certain gap between the outer tube and the inner tube of the telescopic tube so that the telescopic tube can be smoothly extended or retracted. However, this also brings instability to Bracket 01. When Bracket 01 is used to carry the drawing board, the telescopic tube is stretched to the longest length, and the connection between the outer tube and the inner tube will shake due to the installation gap.

[0061] The main rod 103 of the utility model is hinged by an upper rod 10301 and a lower rod 10302 through a second hinge 10303, and the upper rod 10301 can be folded downward to the side away from the box body 03; a duckbill buckle 10304 for fixing the lower rod 10302 and the upper rod 10301 is provided between the lower rod 10302 and the upper rod 10301, or / and the lower rod 10302 and the upper rod 10301 are respectively provided with a limiting member 109 and a locking member 105 that cooperate with each other.

[0062] Compared with the telescopic bracket 01 in the prior art, the bracket 01 of the utility model is a foldable bracket 01. The main rod 103 is hinged by an upper rod 10301 and a lower rod 10302 through a second hinge 10303. The upper rod 10301 can be folded downward to the side away from the box body 03. When stored, the upper rod 10301 and the box body 03 are respectively located on both sides of the lower rod 10302, which can save more space.

[0063] The upper rod 10301 and the lower rod 10302 may be fixed in two ways. One is that a duckbill buckle 10304 for fixing the lower rod 10302 and the upper rod 10301 is provided between the lower rod 10302 and the upper rod 10301, and the upper rod 10301 and the lower rod 10302 are unfolded. At this time, the duckbill buckle 10304 is used to fix the upper rod 10301 and the lower rod 10302 to achieve the extension of the main rod. The upper rod 10301 and the lower rod 10302 can also be fixed by respectively providing a limiting member 109 and a locking member 105 that cooperate with each other on the lower rod 10302 and the upper rod 10301.

[0064] At the same time, the lower rod 10302 is provided with a limit piece 109, and the upper rod 10301 is provided with a flippable locking piece 105 that cooperates with the limit piece 109, thereby solving the problem of instability of the bracket 01 when in the open state.

[0065] As an optional embodiment, the limiting member 109 of the utility model is a cross bar connected between the upper rods 10301 on the left and right sides, and the locking member 105 is a steel wire locking member 105, which is provided with a left connecting portion 10501, a locking portion 10502 and a right connecting portion 10503 in sequence, and the left connecting portion 10501 is installed on the upper rod 10301 on the left side through a torsion spring, and the right connecting portion 10503 is installed on the upper rod 10301 on the right side through a torsion spring, and the locking portion 10502 cooperates with the cross bar, and when the locking portion 10502 is stuck on the cross bar, the upper rod 10301 and the lower rod 10302 are in a straight line.

[0066] The cross bar serves as a connecting piece between the main rods 103 and is also a limiting piece 109. In cooperation with the locking piece 105, the upper rod 10301 and the lower rod 10302 can be well combined into a stable straight rod. The utility model can use a wire locking piece 105, which can save the storage space of the easel. When limit locking is required, the wire locking piece 105 is rotated. The wire locking piece 105 has a certain elasticity. When cooperating with the cross bar, the wire locking piece 105 is slightly deformed through pressure, so that the locking part 10502 is stuck under the cross bar. At this time, the external force is removed, and the left connecting part 10501 and the right connecting part 10503 rotate under the action of the torsion spring force. At this time, the locking part 10502 is stuck under the cross bar to prevent the wire locking piece 105 from further rotating. At this time, the cooperation of the limiting piece 109 and the locking piece 105 can prevent the upper rod 10301 from flipping downward.

[0067] In order to further solve the problem of drawing board stability, the upper rod 10301 of the main rod 103 is provided with a flippable drawing board support 106. The drawing board support 106 is a U-shaped frame composed of square tubes. The drawing board support 106 is provided with a plurality of protrusions for limiting the drawing board.

[0068] The upper rod 10301 of the main rod 103 of the utility model is provided with a reversible drawing board support frame 107, and the drawing board support frame 107 is formed by bending a steel wire in one piece. The reversible drawing board support member 106 is made of steel wire, does not occupy space, and is easy to fold and store.

[0069] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An easel support structure, comprising a support (01) for carrying an easel, and a moving wheel (02) installed at the bottom of the support (01), characterized in that: Support square tubes (101) are provided on the left and right sides of the bottom of the support (01); an open groove (10101) for mounting a moving wheel (02) is provided at one end of the support square tube (101); the upper wall and the lower wall at the front end of the support square tube (101) are missing, leaving the open groove (10101) formed by the left wall and the right wall; the left wall and the right wall of the open groove (10101) are symmetrical on the left and right sides, and an arc structure (10102) is provided at the bottom near the front end of the square tube; the left wall and the right wall are connected near the top by a shaft (102); the moving wheel (02) is mounted on the shaft (102); the radius of the moving wheel (02) is smaller than the distance from the center of the shaft (102) to the lower wall of the support square tube (101); and when the support (01) is tilted in the forward direction, the edge of the arc structure (10102) does not contact the ground.

2. The easel support structure according to claim 1, characterized in that: The bottom of the moving wheel (02) and the bottom surface of the square tube are on the same horizontal plane, the edge of the arc structure (10102) is opposite to the middle of the moving wheel (02), and when the bracket (01) is tilted in the forward direction, the projection of the arc structure (10102) along the shaft (102) on the moving axis does not exceed the outer circumference of the moving wheel.

3. The easel support structure according to claim 2, characterized in that: The main body of the support (01) comprises a left-right symmetrical main rod (103), the left-right symmetrical supporting square tube (101) and a connecting rod (104). The supporting square tubes (101) are parallel to each other. The supporting square tubes (101) are vertically connected with connecting rods (104). The main rod (103) is vertically mounted and connected to the upper wall of the supporting square tube (101) and is perpendicular to the supporting square tube (101). The main rod (103) is mounted behind the moving wheel (02); A handle (108) is connected to the top of the main rod (103).

4. The easel support structure according to claim 3, characterized in that: The main rod (103), the supporting square tube (101) and the connecting rod (104) are all square tube structures.

5. The easel support structure according to claim 4, characterized in that: The moving wheel (02) is detachably rotatably connected to the shaft member (102).

6. An easel, characterized in that: comprising the easel support structure as claimed in any one of claims 1 to 5, It also includes a box body (03) mounted on one side of the bracket (01), one side of the box body (03) being mounted on one side of the bracket (01) via a first hinge (301).

7. The easel according to claim 6, characterized in that: comprising the easel support structure as claimed in claim 3; The main rod (103) is hinged by an upper rod (10301) and a lower rod (10302) via a second hinge (10303), and the upper rod (10301) can be folded downward to a side away from the box body (03); A duckbill buckle (10304) for fixing the lower rod (10302) and the upper rod (10301) is provided between the lower rod (10302) and the upper rod (10301), or / and a limiting member (109) and a locking member (105) that cooperate with each other are respectively provided on the lower rod (10302) and the upper rod (10301).

8. The easel according to claim 7, characterized in that: The limiting member (109) is a cross bar connected between the upper rods (10301) on the left and right sides. The locking member (105) is a steel wire locking member (105). The steel wire locking member (105) is provided with a left connecting portion (10501), a locking portion (10502) and a right connecting portion (10503) in sequence. The left connecting portion (10501) is mounted on the upper rod (10301) on the left side via a torsion spring. The right connecting portion (10503) is mounted on the upper rod (10301) on the right side via a torsion spring. The locking portion (10502) cooperates with the cross bar. When the locking portion (10502) is clamped on the cross bar, the upper rod (10301) and the lower rod (10302) are in a straight line.

9. The easel according to claim 8, characterized in that: The upper rod (10301) of the main rod (103) is provided with a reversible drawing board support (106), the drawing board support (106) is a U-shaped frame composed of square tubes, and the drawing board support (106) is provided with a plurality of protrusions for limiting the drawing board.

10. The easel according to claim 9, characterized in that: The upper rod (10301) of the main rod (103) is provided with a flippable drawing board support frame (107), and the drawing board support frame (107) is formed by bending a steel wire in one piece.

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