Lifting type blackboard

Abstract

The utility model provides a lifting type blackboard, which relates to the technical field of blackboards and comprises a bottom plate, a reinforcing sleeve is fixedly mounted at the top end of the bottom plate, a fixing sleeve is fixedly mounted at one end, far away from the bottom plate, of the reinforcing sleeve, a telescopic rod is arranged at the top end of the fixing sleeve in a penetrating manner, and a fixing hole is formed in the surface of the telescopic rod. A connecting cross rod is fixedly installed at the top end of the telescopic rod, a damping rotating shaft is fixedly installed on the side, away from the telescopic rod, of the connecting cross rod, and a blackboard body is fixedly installed on the side, away from the connecting cross rod, of the damping rotating shaft. According to the novel blackboard, through the arrangement of the spring, the baffle, the positioning bead and the fixing hole, the telescopic rod can be fixed through the positioning bead and the fixing hole when the height of the blackboard body is adjusted, the positioning bead contracts backwards under pressure and pops up forwards to be clamped into the fixing hole after the positioning bead reaches a proper height, and therefore the telescopic rod is fixed, adjustment is convenient for a user, and the practicability is high. And the device can adapt to users with different heights.

Description

Technical Field

[0001] The utility model relates to the technical field of blackboards, in particular to a lifting blackboard. Background Art

[0002] Blackboard does not refer to a black board. In the traditional sense, it is a flat surface that can be written on repeatedly. It is hard and is mostly used for teaching. It is made of wood or frosted glass, and can be written on with chalk or other specific writing materials. It is mostly black, dark green or white. Blackboard is one of the teaching tools often used in school in daily teaching work.

[0003] Publication No. CN203920126U discloses a blackboard, comprising a blackboard body, upper slides are horizontally provided at the upper and lower ends of the blackboard body, and a lower slide is horizontally provided at the lower end of the blackboard body; a long strip-shaped blackboard eraser body is vertically provided between the upper slide and the lower slide, and the blackboard eraser body can slide along the upper slide and the lower slide to the left and right ends of the blackboard body respectively, a plurality of rows of erasing bristles are vertically provided on the surface of the blackboard eraser body close to the blackboard body, a water spray pipe is vertically provided between the plurality of rows of erasing bristles, the upper end of the water spray pipe is connected to a water inlet pipe, the lower end of the water spray pipe is connected to a drain pipe, valves are respectively provided on the water inlet pipe and the drain pipe, a plurality of water spray holes are provided on the pipe wall of the water spray pipe, and the diameter of the water spray holes is 0.2-0.6 mm, a drainage groove is provided at the lower end of the blackboard eraser body, and the drainage groove is connected to the drain pipe through a pipeline, and a handle is provided on the surface of the blackboard eraser body away from the blackboard body. This blackboard comes with a long blackboard eraser body, which can slide along the upper slide and the lower slide to the left and right ends of the blackboard body respectively. A plurality of rows of erasing hairs are vertically arranged on the surface of the blackboard eraser body close to the blackboard body, and a water spray pipe is vertically arranged between the rows of erasing hairs, which is not only convenient for wiping, but also does not generate dust when wiping. However, the height of the blackboard cannot be adjusted, which is very inconvenient for users with petite stature and also results in low utilization of the board surface, which needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a lifting blackboard comprises a base plate, a reinforcement sleeve is fixedly installed on the top of the base plate, a fixing sleeve is fixedly installed on the end of the reinforcement sleeve away from the base plate, a telescopic rod is penetrated through the top of the fixing sleeve, a fixing hole is opened on the surface of the telescopic rod, a connecting cross bar is fixedly installed on the top of the telescopic rod, a damping shaft is fixedly installed on the side of the connecting cross bar away from the telescopic rod, a blackboard body is fixedly installed on the side of the damping shaft away from the connecting cross bar, a storage groove is fixedly installed on the end of the blackboard body away from the damping shaft, a fixing block is fixedly installed on the side of the fixing sleeve close to the fixing hole, a spring is installed inside the fixing block, a baffle is installed on the side of the spring close to the fixing hole, and a positioning bead is fixedly installed on the side of the baffle away from the spring.

[0006] Preferably, the baffle is slidably connected to the fixing block, and the positioning bead is slidably connected to the fixing hole. Here, the telescopic rod can be fixed by the positioning bead.

[0007] Preferably, the telescopic rod is slidably connected to the fixing sleeve, and the fixing holes are distributed in an array on the surface of the telescopic rod. Here, the fixing holes can adjust the height of the telescopic rod.

[0008] Preferably, the blackboard body and the connecting crossbar are rotationally connected via a damping shaft, and the connecting crossbar and the telescopic rod are slidably connected. Here, the damping shaft can adjust the angle of the blackboard body, and the telescopic rod and the fixing sleeve can adjust the height of the bracket.

[0009] Preferably, the bottom plate, the blackboard body, the fixing sleeve and the telescopic rod are all provided with rounded corners. Here, providing the rounded corners makes the lifting blackboard more beautiful and can also prevent the staff from accidentally hitting the corners and getting hurt.

[0010] Preferably, an anti-skid mechanism is provided at one end of the bottom plate away from the fixing sleeve, and the anti-skid mechanism includes a soft pad, and the soft pad is installed at the bottom end of the bottom plate, and a rubber pad is fixedly installed at one end of the soft pad away from the bottom plate, and an anti-skid strip is fixedly installed at one end of the rubber pad away from the soft pad. Here, the anti-skid effect of the bottom plate can be increased, and the bottom plate can be placed more stably.

[0011] Preferably, the anti-skid strips are evenly distributed on the bottom end of the rubber pad. Here, multiple anti-skid strips make the anti-skid effect of the bottom plate better.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, by setting the spring, baffle, positioning bead and fixing hole, the telescopic rod can be fixed by the positioning bead and the fixing hole when adjusting the height of the blackboard body. When subjected to pressure, the positioning bead shrinks backward. After reaching the appropriate height, the positioning bead pops out forward and is stuck in the fixing hole, thereby fixing the telescopic rod, which is convenient for users to adjust and can adapt to users of different heights.

[0014] 2. In the utility model, by setting the soft pad, rubber pad and anti-skid strip, the anti-skid strip can increase the friction with the ground, so that the blackboard can be installed more stably. The soft pad and rubber pad have a certain buffering and shock absorbing effect. The blackboard body is not easy to shake when in use and is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of a lifting blackboard is proposed for the utility model;

[0016] Figure 2 A rear view of a lifting blackboard is provided for the utility model;

[0017] Figure 3 A partial cross-sectional view of a lifting blackboard is provided for the utility model;

[0018] Figure 4 The utility model proposes a lifting blackboard Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 The utility model provides a side view of a lifting blackboard.

[0020] Legend:

[0021] 1. Bottom plate; 2. Reinforcement sleeve; 3. Fixed sleeve; 4. Telescopic rod; 5. Blackboard body; 6. Storage slot; 7. Soft cushion; 8. Rubber pad; 9. Connecting cross bar; 10. Fixing hole; 11. Anti-slip strip; 12. Fixed block; 13. Spring; 14. Baffle; 15. Positioning bead; 16. Damping shaft. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1

[0025] See also Figure 1-5 The utility model provides a technical solution: a lifting blackboard, comprising a base plate 1, a reinforcement sleeve 2 is fixedly installed on the top of the base plate 1, the reinforcement sleeve 2 can make the installation of the fixing sleeve 3 more stable, a fixing sleeve 3 is fixedly installed on the end of the reinforcement sleeve 2 away from the base plate 1, a telescopic rod 4 is penetrated at the top of the fixing sleeve 3, a fixing hole 10 is opened on the surface of the telescopic rod 4, a connecting cross bar 9 is fixedly installed on the top of the telescopic rod 4, a damping shaft 16 is fixedly installed on the side of the connecting cross bar 9 away from the telescopic rod 4, a blackboard body 5 is fixedly installed on the side of the damping shaft 16 away from the connecting cross bar 9, a storage groove 6 is fixedly installed on one end of the blackboard body 5 away from the damping shaft 16, a fixing block 12 is fixedly installed on the side of the fixing sleeve 3 close to the fixing hole 10, a spring 13 is installed inside the fixing block 12, a baffle 14 is installed on the side of the spring 13 close to the fixing hole 10, and a positioning bead 15 is fixedly installed on the side of the baffle 14 away from the spring 13.

[0026] See also Figure 3-4 The baffle 14 is slidably connected to the fixed block 12, and the positioning bead 15 is slidably connected to the fixing hole 10. The telescopic rod 4 can be fixed by the positioning bead 15. The telescopic rod 4 is slidably connected to the fixing sleeve 3. The fixing holes 10 are distributed in an array on the surface of the telescopic rod 4. The fixing holes 10 can adjust the height of the telescopic rod 4. The blackboard body 5 and the connecting cross bar 9 are rotatably connected through the damping shaft 16. The connecting cross bar 9 and the telescopic rod 4 are slidably connected. The damping shaft 16 can adjust the angle of the blackboard body 5. The telescopic rod 4 and the fixing sleeve 3 can adjust the height of the bracket. The bottom plate 1, the blackboard body 5, the fixing sleeve 3 and the telescopic rod 4 are all provided with rounded corners. The rounded corners make the lifting blackboard more beautiful and can also prevent the staff from accidentally hitting the corners and getting injured.

[0027] Embodiment 2

[0028] See also Figure 2 An anti-skid mechanism is provided at one end of the bottom plate 1 away from the fixed sleeve 3, and the anti-skid mechanism includes a soft pad 7, and the soft pad 7 is installed at the bottom end of the bottom plate 1. A rubber pad 8 is fixedly installed at one end of the soft pad 7 away from the bottom plate 1, and an anti-skid strip 11 is fixedly installed at one end of the rubber pad 8 away from the soft pad 7, which can increase the anti-skid effect of the bottom plate 1 and make the bottom plate 1 more stably placed. The anti-skid strips 11 are evenly distributed at the bottom end of the rubber pad 8. Multiple anti-skid strips 11 make the anti-skid effect of the bottom plate 1 better.

[0029] Working principle: when the height of the blackboard body 5 needs to be adjusted, the user holds the telescopic rod 4 with his hand according to his height and pulls it upward. When under pressure, the positioning bead 15 contracts backward. After reaching the appropriate position, the positioning bead 15 is fixed in the fixing hole 10 by the elastic force of the spring 13. The positioning bead 15 pops out forward and is stuck in the fixing hole 10, thereby fixing the telescopic rod 4, which is convenient for the user to adjust and can be adapted to users of different heights. It is also very convenient for users with petite stature. The anti-slip strip 11 can increase the friction with the ground. The soft pad 7 and rubber pad 8 at the bottom have a certain buffering and shock-absorbing effect. The blackboard body 5 is not easy to shake when used and is more stable.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A lifting blackboard, comprising a bottom plate (1), characterized in that: A reinforcing sleeve (2) is fixedly mounted on the top of the base plate (1); a fixing sleeve (3) is fixedly mounted on the end of the reinforcing sleeve (2) away from the base plate (1); a telescopic rod (4) is penetrated through the top of the fixing sleeve (3); a fixing hole (10) is provided on the surface of the telescopic rod (4); a connecting cross bar (9) is fixedly mounted on the top of the telescopic rod (4); a damping shaft (16) is fixedly mounted on the side of the connecting cross bar (9) away from the telescopic rod (4); and the damping shaft (16) is away from the connecting cross bar (9). A blackboard body (5) is fixedly mounted on one side of the cross bar (9); a storage groove (6) is fixedly mounted on one end of the blackboard body (5) away from the damping shaft (16); a fixing block (12) is fixedly mounted on the side of the fixing sleeve (3) close to the fixing hole (10); a spring (13) is mounted inside the fixing block (12); a baffle (14) is mounted on the side of the spring (13) close to the fixing hole (10); and a positioning bead (15) is fixedly mounted on the side of the baffle (14) away from the spring (13).

2. The lifting blackboard according to claim 1 is characterized in that: The baffle (14) is slidably connected to the fixing block (12), and the positioning bead (15) is slidably connected to the fixing hole (10).

3. The lifting blackboard according to claim 1 is characterized in that: The telescopic rod (4) is slidably connected to the fixing sleeve (3), and the fixing holes (10) are distributed in an array on the surface of the telescopic rod (4).

4. The lifting blackboard according to claim 1 is characterized in that: The blackboard body (5) and the connecting cross bar (9) are rotationally connected via a damping shaft (16), and the connecting cross bar (9) and the telescopic rod (4) are slidingly connected.

5. The lifting blackboard according to claim 1 is characterized in that: The bottom plate (1), the blackboard body (5), the fixing sleeve (3) and the telescopic rod (4) are all provided with rounded corners.

6. The lifting blackboard according to claim 1 is characterized in that: An anti-skid mechanism is provided at one end of the base plate (1) away from the fixing sleeve (3), the anti-skid mechanism comprising a soft pad (7), the soft pad (7) being mounted on the bottom end of the base plate (1), a rubber pad (8) being fixedly mounted at one end of the soft pad (7) away from the base plate (1), and an anti-skid strip (11) being fixedly mounted at one end of the rubber pad (8) away from the soft pad (7).

7. The lifting blackboard according to claim 6, characterized in that: The anti-slip strips (11) are evenly distributed on the bottom end of the rubber pad (8).

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