Angle adjusting mechanism for drawing board support

Abstract

The utility model discloses a drawing board support angle adjusting mechanism, and belongs to the technical field of angle adjustment. Comprising a drawing board support body, supporting legs are movably connected to the back face of the drawing board support body, supporting rods are connected to the middle positions of the supporting legs through rotating shafts, movable open grooves are formed in the back face of the drawing board support body, and threaded rotating rods are arranged in the movable open grooves. A person can rotate a second transmission gear to drive a connecting rotating rod to rotate on the front side, then the connecting rotating rod drives the second transmission gear and a first transmission gear to rotate, the first transmission gear drives a threaded rotating rod to rotate, and the threaded rotating rod drives a moving block to move; and the supporting angle of the supporting rod can be changed, fixing through friction force is not needed, and the situation that the supporting rod is damaged due to too large force or loosened due to too small force is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of angle adjustment, in particular to an angle adjustment mechanism for a drawing board support. Background Technique

[0002] Drawing from nature is a way and means to pursue and express beauty. It can cultivate temperament, increase artistic thinking, enhance aesthetic concepts, and make our lives more colorful; during the process of drawing from nature, an easel is an essential drawing tool, which can adjust the drawing board to a suitable angle to facilitate our creative work. A common easel for drawing from nature has three legs, two of which are placed in the front to support the drawing pillar, and the third leg extends backward and obliquely to adjust the angle of the drawing board or canvas. This kind of easel for drawing from nature is usually made of wood or aluminum, with small volume, light weight and easy to carry.

[0003] The angle adjustment and fixation of the rear support leg are usually carried out by the extrusion fixation of bolts, and the limit is carried out through friction. However, it is not easy to master the extrusion force of the bolts. When the rotation force is too large, it is easy to damage the support leg. On the contrary, when the force is too small, it is easy to loosen. For this reason, we propose an angle adjustment mechanism for a drawing board support to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages of the existing technology involved in the background technique, and to propose an angle adjustment mechanism for a drawing board support.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An angle adjustment mechanism for a drawing board support, including a main body of the drawing board support. A support leg is movably connected to the back of the main body of the drawing board support. A support rod is connected to the middle position of the support leg through a rotating shaft. An activity slot is opened on the back of the main body of the drawing board support. A threaded rotating rod is arranged inside the activity slot. A moving block is sleeved outside the threaded rotating rod. The other end of the support rod is movably connected to the moving block;

[0007] The angle of the support leg can be adjusted by rotating the threaded rotating rod to drive the moving block to move, so that the moving block drives the support rod to adjust the angle of the support leg. The support of the support leg is completed through the self-locking structure of the thread, without the need to fix it with bolts, avoiding the loosening and damage of the support leg.

[0008] Preferably, a first transmission gear is arranged at the bottom end of the threaded rotating rod, and the first transmission gear extends into the main body of the drawing board support;

[0009] It can enable people to drive the threaded rotating rod to rotate by rotating the first transmission gear, making the rotation of the threaded rotating rod more convenient.

[0010] Preferably, a rotating block is provided at the bottom end of the front surface of the main body of the drawing board support. A connecting rotating rod is provided at the end of the rotating block. A second transmission gear is provided at the end of the connecting rotating rod. The second transmission gear extends into the main body of the drawing board support and meshes with the first transmission gear.

[0011] It enables a person to drive the second transmission gear to rotate by rotating the rotating block at the front, and the first transmission gear drives the second transmission gear to rotate, thus making the rotation of the first transmission gear more convenient.

[0012] Preferably, a mounting limit rod is provided at the end of the rotating block. The mounting limit rod is inserted into the end part inside the connecting rotating rod.

[0013] It enables the rotating block to slide at the end of the connecting rotating rod through the mounting limit rod, making the rotation of the person more convenient.

[0014] Preferably, a limit insertion rod is annularly provided on one side of the rotating block close to the main body of the drawing board support. A plurality of groups of limit insertion grooves are provided on the front surface of the main body of the drawing board support. The limit insertion rod is adapted to the limit insertion groove.

[0015] It enables the rotating block to drive the limit insertion rod to disengage from the inside of the limit insertion groove after being pulled. At this time, the rotating block can rotate. On the contrary, after the rotating block drives the limit insertion rod to be inserted into the inside of the limit insertion groove, the rotating block cannot rotate, and further the second transmission gear and the first transmission gear cannot rotate, making the supporting effect of the threaded rotating rod on the support rod better.

[0016] Preferably, the mounting limit rod is hexagonal, and the hole groove formed by the mounting limit rod penetrating through the connecting rotating rod is also hexagonal.

[0017] It enables the mounting limit rod to drive the connecting rotating rod to rotate, making the rotation of the connecting rotating rod more convenient.

[0018] Preferably, a support spring is provided inside the connecting rotating rod. One end of the support spring is fixedly connected to the inner wall of the connecting rotating rod, and the other end of the support spring is fixedly connected to the end of the mounting limit rod.

[0019] This support spring can support the mounting limit rod, thus avoiding the situation where the mounting limit rod disengages from the inside of the connecting rotating rod. At the same time, it better drives the limit insertion rod to be inserted into the inside of the limit insertion groove, avoiding the situation where the rotating block loosens and causes the limit insertion rod to disengage from the inside of the limit insertion groove.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. The utility model enables a person to drive a connecting rotating rod to rotate by rotating a second transmission gear from the front. Subsequently, the connecting rotating rod drives the second transmission gear and the first transmission gear to rotate, causing the first transmission gear to drive a threaded rotating rod to rotate. The threaded rotating rod drives a moving block to move, enabling the support angle of the support rod to change. There is no need to fix it through friction, avoiding damage to the support rod due to excessive force or loosening due to insufficient force.

[0022] 2. The utility model can pull a rotating block so that the rotating block drives a limiting insertion rod to disengage from the inside of a limiting insertion groove before it can rotate. Conversely, the rotating block is driven to move by a support spring, causing the limiting insertion rod to be inserted into the inside of the limiting insertion groove to limit the rotating block, preventing the rotating block from driving the second transmission gear and the first transmission gear to rotate, and thus making the support effect of the threaded rotating rod on the moving block and the support rod better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of an angle adjustment mechanism for a drawing board support proposed by the present utility model;

[0024] Figure 2 is Figure 1 the back view structural schematic diagram of;

[0025] Figure 3 is Figure 2 a partial front view sectional structural schematic diagram of the drawing board support main body in;

[0026] Figure 4 is Figure 3 the front view sectional structural schematic diagram of the connecting rotating rod in.

[0027] In the figure: 1. Drawing board support main body; 2. Support leg; 3. Support rod; 4. Movable slot; 5. Threaded rotating rod; 6. Moving block; 7. First transmission gear; 8. Second transmission gear; 9. Connecting rotating rod; 10. Rotating block; 11. Limiting insertion rod; 12. Limiting insertion groove; 13. Mounting limiting rod; 14. Support spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0029] Refer to Figures 1-4The angle adjustment mechanism of a drawing board stand shown in the figure has a supporting leg 2 movably connected to the back side of a drawing board stand body 1, and then a supporting rod 3 is connected to the middle position of the supporting leg 2 through a rotating shaft, and a movable slot 4 is opened on the back side of the drawing board stand body 1, and a threaded rotating rod 5 is arranged inside the movable slot 4, so that the outer part of the threaded rotating rod 5 is sleeved with a moving block 6, and the other end of the support rod 3 is movably connected to the moving block 6, and a first transmission gear 7 is arranged at the bottom end of the threaded rotating rod 5, and then the first transmission gear 7 extends to the inside of the drawing board stand body 1, and a rotating block 10 is arranged at the bottom end of the front side of the drawing board stand body 1, so that a connecting rotating rod 9 is arranged at the end of the rotating block 10, and a second transmission gear 8 is arranged at the end of the connecting rotating rod 9, and the second transmission gear 8 extends to the inside of the drawing board stand body 1 and meshes with the first transmission gear 7.

[0030] The rotating block 10 in this embodiment is described in detail, please refer to Figure 3 and Figure 4 A mounting limit rod 13 is provided at the end of the rotating block 10, and then the mounting limit rod 13 is inserted into the end of the connecting rotating rod 9, and a limiting embedding rod 11 is provided in a ring on one side of the rotating block 10 close to the drawing board bracket body 1, so that a plurality of groups of limiting embedding grooves 12 are opened on the front of the drawing board bracket body 1, and the limiting embedding rod 11 and the limiting embedding grooves 12 are adapted to each other, and the mounting limit rod 13 is hexagonal, so that the hole groove formed by the mounting limit rod 13 passing through the connecting rotating rod 9 is also hexagonal, and at the same time, a supporting spring 14 is provided inside the connecting rotating rod 9, so that one end of the supporting spring 14 is fixedly connected to the inner wall of the connecting rotating rod 9, and the other end of the supporting spring 14 is fixedly connected to the end of the mounting limit rod 13.

[0031] Working principle: When the utility model is in use, a person directly pulls the rotating block 10 from the front, so that the rotating block 10 drives the limiting embedded rod 11 to disengage from the inside of the limiting embedded groove 12, and then the rotating block 10 can be rotated, and the rotating block 10 drives the installation limiting rod 13 to rotate, and the installation limiting rod 13 drives the connecting rotating rod 9 and the second transmission gear 8 to rotate, and the second transmission gear 8 can drive the threaded rotating rod 5 to rotate through the first transmission gear 7, so that the threaded rotating rod 5 drives the moving block 6 to move, and the moving block 6 drives the support angle of the support rod 3 and the support leg 2 to change.

[0032] Then, the rotating block 10 is loosened, so that the support spring 14 drives the installation limit rod 13 to move, and the installation limit rod 13 drives the rotating block 10 to reset, so that the rotating block 10 drives the limit embedding rod 11 to embed into the inside of the limit embedding groove 12 for limit fixation to prevent it from rotating, thereby improving the support stability of the support rod 3 and the support leg 2.

[0033] In the present utility model, the installation methods, connection methods or setting methods of all the above-mentioned components are common mechanical methods, and the specific structures, models and coefficient indexes of all its components are its own technologies. As long as the beneficial effects can be achieved, they can be implemented, so no further elaboration will be made.

[0034] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.

[0035] In the present utility model, unless otherwise stated, the orientation words contained in terms such as "up and down, left and right, front and back, inside and outside, vertical and horizontal" only represent the orientation of the term in its normal use state, or the common names understood by those skilled in the art, and should not be regarded as a limitation to the term. At the same time, the numerical sequence terms such as "first", "second" and "third" do not represent specific quantities and orders, but are only used for name distinction. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

Claims

1. An angle adjustment mechanism for a drawing board support, comprising a main body (1) of the drawing board support, characterized in that, A support leg (2) is movably connected to the back of the main body (1) of the drawing board support. A support rod (3) is connected to the middle position of the support leg (2) through a rotating shaft. An activity slot (4) is formed in the back of the main body (1) of the drawing board support. A threaded rotating rod (5) is arranged inside the activity slot (4). A moving block (6) is sleeved outside the threaded rotating rod (5). The other end of the support rod (3) is movably connected to the moving block (6).

2. The angle adjustment mechanism of a drawing board bracket according to claim 1, characterized in that, A first transmission gear (7) is arranged at the bottom end of the threaded rotating rod (5), and the first transmission gear (7) extends into the main body (1) of the drawing board support.

3. The angle adjustment mechanism of a drawing board bracket according to claim 2, characterized in that, A rotating block (10) is arranged at the bottom end of the front surface of the main body (1) of the drawing board support. A connecting rotating rod (9) is arranged at the end of the rotating block (10). A second transmission gear (8) is arranged at the end of the connecting rotating rod (9). The second transmission gear (8) extends into the main body (1) of the drawing board support and meshes with the first transmission gear (7).

4. The angle adjustment mechanism of a drawing board support according to claim 3, characterized in that, An installation limiting rod (13) is arranged at the end of the rotating block (10), and the installation limiting rod (13) is inserted into the end part inside the connecting rotating rod (9).

5. The angle adjustment mechanism of a drawing board support according to claim 3, characterized in that, A limiting insertion rod (11) is annularly arranged on one side surface of the rotating block (10) close to the main body (1) of the drawing board support. A plurality of groups of limiting insertion grooves (12) are formed in the front surface of the main body (1) of the drawing board support. The limiting insertion rod (11) is adapted to the limiting insertion groove (12).

6. The angle adjustment mechanism of a drawing board bracket according to claim 4, characterized in that, The installation limiting rod (13) is hexagonal, and the hole groove formed by the installation limiting rod (13) penetrating through the connecting rotating rod (9) is also hexagonal.

7. The angle adjustment mechanism of a drawing board support according to claim 6, characterized in that, A support spring (14) is arranged inside the connecting rotating rod (9). One end of the support spring (14) is fixedly connected to the inner wall of the connecting rotating rod (9), and the other end of the support spring (14) is fixedly connected to the end of the installation limiting rod (13).

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