Drawing board
By designing a drawing board with height adjustment and circumferential adjustment functions, the problem of the drawing board tilting during use is solved, flexible angle adjustment and locking is achieved, and the convenience and practicality of drawing is improved.
Patent Information
- Application Number
- CN202421762607.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-24
AI Technical Summary
Due to the different heights and drawing sitting postures, the drawing board is prone to tilt during use, and the lack of effective fixing methods is affected, which affects the convenience of drawing.
A drawing board including a back frame, a height adjustment sleeve and a circumferential adjustment sleeve are designed. By adjusting the height and circumferential angle, the inclination angle of the drawing board is adjusted, and the angle is adjusted by locking screws.
It realizes flexible inclination adjustment and locking of the drawing board, which is convenient to use, complete functions and strong practicality.
Smart Images
Figure CN222968182U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drawing tools, and more specifically, it relates to a drawing board. Background Art
[0002] Even when using the same drawing board for drawing, due to the different heights and drawing postures of each person, the drawing board in actual use will tilt at different angles. If the drawing board at the corresponding tilt angle can be fixed, it will be convenient for the drafter to draw. Accordingly, the utility model provides a drawing board. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and provide a drawing board with the characteristics of adjustable tilt angle and convenient adjustment.
[0004] To solve the above technical problems, the purpose of the utility model is realized as follows: A drawing board related to the utility model includes a back frame, which is composed of two horizontally arranged frame bars symmetrically arranged up and down and two vertically arranged frame bars symmetrically arranged left and right. A drawing board is arranged between the horizontally arranged frame bars. A height adjustment sleeve is slidably connected to the vertically arranged frame bars. A locking screw whose end abuts against the vertically arranged frame bars is threadedly connected to the height adjustment sleeve. A circumferential adjustment sleeve extending in the direction away from the drawing board is arranged on the height adjustment sleeve. An adjustment shaft is rotatably connected to the circumferential adjustment sleeve. One end of the adjustment shaft extends out of the circumferential adjustment sleeve and a support side bar extending radially is arranged thereon. A support bottom bar is connected between the two support side bars.
[0005] The utility model is further arranged as follows: A plurality of positioning grooves are circumferentially distributed on the side surface of the adjustment shaft, and the included angles between adjacent two positioning grooves are equal. A side hole is opened on the circumferential adjustment sleeve. A spring piece whose one end is connected to the hole wall is arranged in the side hole. A positioning protrusion is arranged on the spring piece, and the positioning protrusion is embedded in one of the positioning grooves.
[0006] The utility model is further arranged as follows: The locking screw is arranged above the circumferential adjustment sleeve.
[0007] The utility model is further arranged as follows: An anti-slip rubber sleeve is arranged on the support bottom bar.
[0008] The utility model is further arranged as follows: The locking screw is a hand-tightening locking screw.
[0009] In summary, the utility model has the following beneficial effects: For the drawing board related to the utility model, by adjusting the height adjustment sleeve up and down and combining with the circumferential adjustment of the adjustment shaft, under the combined action of the two, the tilt angle of the drawing board can be adjusted. The adjustment is free and flexible. After the adjustment is completed, the tilt angle of the drawing board can be locked. It is flexible and convenient to use. The overall function is perfect and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0011] Figure 2 is a schematic diagram of a partial structure of the present utility model;
[0012] Figure 3 is a schematic diagram of a local structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the preferred implementation modes of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the patent requirements of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0014] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.
[0015] Embodiment 1
[0016] Refer to Figures 1 to 3 As shown, a drawing board involved in this embodiment includes a back frame. The back frame is composed of two horizontally arranged frame bars 1 that are symmetrically arranged up and down and two vertically arranged frame bars 2 that are symmetrically arranged left and right. A drawing board 3 is arranged between the horizontally arranged frame bars 1. A height adjustment sleeve 4 is slidably connected to the vertically arranged frame bars 2. A locking screw 5 whose end abuts against the vertically arranged frame bar 2 is threadedly connected to the height adjustment sleeve 4. A circumferential adjustment sleeve 6 extending in a direction away from the drawing board is arranged on the height adjustment sleeve 4. An adjustment shaft 7 is rotatably connected inside the circumferential adjustment sleeve 6. One end of the adjustment shaft 7 extends out of the circumferential adjustment sleeve 6 and a support side bar 8 extending radially is arranged thereon. A support bottom bar 9 is connected between the two support side bars 8.
[0017] Furthermore, a plurality of positioning grooves 10 are circumferentially arranged on the side surface of the adjustment shaft 7, and the included angles between adjacent two positioning grooves 10 are equal. A side hole 11 is opened on the circumferential adjustment sleeve 6. A elastic piece 12 whose one end is connected to the hole wall is arranged inside the side hole 11. A positioning protrusion 13 is arranged on the elastic piece 12, and the positioning protrusion 13 is embedded in one of the positioning grooves 10.
[0018] In this embodiment, the position of the height adjustment sleeve 4 can be adjusted in the length direction of the longitudinal frame bar 2 by loosening the locking screw 5. After the adjustment is completed, the height adjustment sleeve 4 is locked by tightening the locking screw 5. The adjustment shaft 7 can be rotated relative to the circumferential adjustment sleeve 6 by slightly turning the support bottom rod 9 or the support side rod 8. The positioning groove 10 cooperates with the positioning protrusion 13 to limit the circumferential position of the circumferentially rotating adjustment shaft 7. After the adjustment is completed, the circumferential position of the adjustment shaft 7 is locked because the positioning protrusion 13 is inserted into a corresponding positioning groove 10.
[0019] Example 2
[0020] See also Figures 1 to 3 As shown, a drawing board involved in this embodiment is further configured on the basis of embodiment 1, wherein the locking screw 5 is arranged above the circumferential adjustment sleeve 6 .
[0021] In this embodiment, the locking screw 5 is arranged above the circumferential adjustment sleeve 6 without being blocked, thereby facilitating the operation of the locking screw 5 .
[0022] Example 3
[0023] See also Figures 1 to 3 As shown, a drawing board involved in this embodiment is further configured on the basis of embodiment 1, wherein the supporting bottom rod 9 is provided with an anti-slip rubber sleeve (not shown).
[0024] In this embodiment, the provision of the anti-skid rubber sleeve has the effect of increasing friction and preventing skidding.
[0025] Example 4
[0026] See also Figures 1 to 3 As shown, a drawing board involved in this embodiment is further configured on the basis of Embodiment 1, wherein the locking screw 5 is a hand-tightened locking screw.
[0027] In the present embodiment, by providing the locking screw 5 as a hand-tightening locking screw, the locking screw 5 can be rotated without the aid of a workpiece.
[0028] The drawing board involved in the utility model can adjust the inclination angle of the drawing board by combining the up and down height adjustment sleeve with the circumferential adjustment shaft. The adjustment is free and flexible. After the adjustment is completed, the inclination angle of the drawing board can be locked. It is flexible and convenient to use, has complete overall functions, and is highly practical.
[0029] Unless otherwise specified, in this utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc., the orientation or positional relationship indicated is based on the actual orientation or positional relationship shown. It is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the orientation or positional relationship in this utility model are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to the specific circumstances.
[0030] Unless otherwise clearly defined and limited, in this utility model, if there are terms such as "arranged", "connected" and "coupled", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.
[0031] The preferred specific embodiments of this utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of this utility model without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field according to the concept of this utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.
Claims
1. A drawing board, comprising a back frame, the back frame consisting of two horizontal frame bars arranged symmetrically in the vertical direction and two vertical frame bars arranged symmetrically in the left and right direction, characterized in that: A drawing board is provided between the horizontal frame bars, a height adjustment sleeve is slidably connected to the longitudinal frame bar, a locking screw whose end portion rests against the longitudinal frame bar is threadedly connected to the height adjustment sleeve, a circumferential adjustment sleeve is provided on the height adjustment sleeve and extends in the direction away from the drawing board, an adjustment shaft is rotatably connected in the circumferential adjustment sleeve, one end of the adjustment shaft extends out of the circumferential adjustment sleeve and is provided with a supporting side rod extending in the radial direction, and a supporting bottom rod is connected between the two supporting side rods.
2. The drawing board according to claim 1, characterized in that: A plurality of positioning grooves are arranged around the side of the adjusting shaft, and the angles between two adjacent positioning grooves are equal. A side hole is opened on the circumferential adjusting sleeve, and a spring sheet with one end connected to the hole wall is arranged in the side hole. A positioning protrusion is arranged on the spring sheet, and the positioning protrusion is embedded in one of the positioning grooves.
3. The drawing board according to claim 1 or 2, characterized in that: The locking screw is arranged above the circumferential adjustment sleeve.
4. The drawing board according to claim 3, characterized in that: The supporting bottom rod is provided with an anti-skid rubber sleeve.
5. The drawing board according to claim 1, characterized in that: The locking screw is a hand-tightening locking screw.