Showing stand

Abstract

The utility model belongs to the technical field of showing instruments, and particularly relates to a showing stand which comprises a base, two support blocks are symmetrically fixed to the top of the base, a two-way screw rod is rotationally connected between the two support blocks through a bearing, a rotating handle is fixed to one end of the two-way screw rod, and the other end of the two-way screw rod is provided with a rotating shaft. And two connecting blocks are symmetrically connected to the surface of the two-way screw in a threaded mode, and the two connecting blocks are slidably connected to the top of the base. Through the arrangement of the base, the support block, the two-way screw rod, the rotating handle, the connecting block, the connecting rod, the main magnetic white board, the fixing block, the telescopic sleeve, the containing groove, the auxiliary magnetic white board, the clamping groove, the L-shaped block, the one-way screw rod and the rotary knob, the overall height can be adjusted, so that the teaching aid can adapt to teachers of different heights, the auxiliary magnetic white board can stretch out or retract back, and the teaching aid is convenient to use. Therefore, the use area can be increased or reduced, when transportation is needed, transportation can be facilitated, and the overall use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of display equipment, in particular to a display rack. Background Art

[0002] Economic management is a discipline that studies how to effectively manage and use resources to achieve the economic goals of organizations or individuals. It covers multiple disciplines such as economics, management, and accounting, and is highly comprehensive and widely applicable. In the teaching process of economic management, teachers sometimes need to display bills and vouchers, and need to compare and correct the bills made by students. Teachers usually enlarge and print these bills and vouchers, and then fix them on the display stand and show them to students. At present, the height of the display stand is usually fixed and cannot be adjusted. On the one hand, it cannot adapt well to teachers of different heights. On the other hand, it is inconvenient to transport when it needs to be transported. In addition, the display board area of ​​the current display stand cannot be adjusted, and the use effect is not very good. Therefore, we propose a display stand to solve the above problems. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a display stand, which solves the problems raised in the above background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A display stand comprises a base, wherein two bracket blocks are symmetrically fixed on the top of the base, a bidirectional screw is rotatably connected between the two bracket blocks through a bearing, a handle is fixed to one end of the bidirectional screw, and the surface of the bidirectional screw is symmetrically threadedly connected to two connecting blocks, both of which are slidably connected to the top of the base, both of which are rotatably connected to connecting rods through pins, and the tops of the two connecting rods are rotatably connected to a main magnetic whiteboard through pins, and two fixing blocks are symmetrically fixed on the back of the main magnetic whiteboard, and the two fixing blocks are symmetrically fixed to the back of the main magnetic whiteboard. A telescopic sleeve is fixed to the bottom of the fixed block, and the bottoms of the two telescopic sleeves are fixedly connected to the top of the base. Both side walls of the main magnetic whiteboard are provided with placement grooves, and auxiliary magnetic whiteboards are slidably installed in the placement grooves. The tops of the auxiliary magnetic whiteboards are equidistantly provided with card slots, and L-shaped blocks are fixed to both ends of the top of the main magnetic whiteboard. One end of the L-shaped block is threadedly connected with a one-way screw, and a knob is fixed to the top of the one-way screw. The bottom end of the one-way screw is adapted to the card slot, and a magnetic block is adsorbed on the surface of the main magnetic whiteboard.

[0008] Furthermore, the surface of the bidirectional screw is symmetrically provided with two sections of threads with opposite spiral directions, and the side walls of the two connecting blocks are respectively provided with threaded holes matched with the corresponding threads.

[0009] Furthermore, a sliding block is fixed to the bottom of each of the connecting blocks, and a sliding groove adapted for the sliding block is provided on the top of the base.

[0010] Furthermore, a threaded hole adapted for a one-way screw is provided on the surface of the L-shaped block.

[0011] Furthermore, the surfaces of the turning handle and the knob are provided with anti-slip patterns.

[0012] Furthermore, universal self-locking wheels are installed at the four corners of the bottom of the base.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a display stand with the following beneficial effects:

[0015] The utility model can adjust the overall height by arranging a base, a bracket block, a two-way screw, a handle, a connecting block, a connecting rod, a main magnetic whiteboard, a fixing block, a telescopic sleeve, a placement slot, a secondary magnetic whiteboard, a card slot, an L-shaped block, a one-way screw and a knob, so as to adapt to teachers of different heights, and the secondary magnetic whiteboard can be extended or retracted, so as to increase or reduce the use area, so when it is needed, it can be conveniently transported, and the overall use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall first-view three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall second viewing angle stereoscopic structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall top view structure of the utility model;

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the cross-sectional structure along the middle line AA.

[0020] In the figure: 1. Base; 2. Bracket block; 3. Bidirectional screw; 4. Turning handle; 5. Connecting block; 6. Connecting rod; 7. Main magnetic whiteboard; 8. Fixing block; 9. Telescopic sleeve; 10. Placement slot; 11. Secondary magnetic whiteboard; 12. Card slot; 13. L-shaped block; 14. One-way screw; 15. Knob; 16. Magnetic block; 17. Slider; 18. Slide slot; 19. Universal self-locking wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] like Figure 1-4As shown, a display stand proposed by an embodiment of the utility model includes a base 1, two bracket blocks 2 are symmetrically fixed on the top of the base 1, a bidirectional screw 3 is rotatably connected between the two bracket blocks 2 through a bearing, a handle 4 is fixed to one end of the bidirectional screw 3, and two connecting blocks 5 are symmetrically threaded on the surface of the bidirectional screw 3, the two connecting blocks 5 are both slidably connected to the top of the base 1, the tops of the two connecting blocks 5 are rotatably connected to connecting rods 6 through pins, the tops of the two connecting rods 6 are rotatably connected to a main magnetic whiteboard 7 through pins, and two fixing blocks 8 are symmetrically fixed on the back of the main magnetic whiteboard 7. The bottom of the fixed block 8 is fixed with a telescopic sleeve 9, and the bottoms of the two telescopic sleeves 9 are fixedly connected to the top of the base 1. The two side walls of the main magnetic whiteboard 7 are provided with placement grooves 10, and auxiliary magnetic whiteboards 11 are slidably installed in the placement grooves 10. The tops of the auxiliary magnetic whiteboards 11 are equidistantly provided with card slots 12. L-shaped blocks 13 are fixed to both ends of the top of the main magnetic whiteboard 7. One end of the L-shaped block 13 is threadedly connected with a one-way screw 14. The top of the one-way screw 14 is fixed with a knob 15. The bottom end of the one-way screw 14 is adapted to the card slot 12. The surface of the main magnetic whiteboard 7 is adsorbed with a magnetic block 16, so that When in use, the height of the main magnetic whiteboard 7 can be adjusted according to the teacher's height. When it needs to be raised, the handle 4 can be turned, and the handle 4 can drive the bidirectional screw 3 to rotate. The bidirectional screw 3 can drive the two connecting blocks 5 to move outward, and the connecting blocks 5 can drive the corresponding connecting rods 6 to move. The two connecting rods 6 can drive the main magnetic whiteboard 7 to move upward, so as to increase the height. The teacher can fix the printed enlarged version of the bill or voucher on the main magnetic whiteboard 7 through the magnetic block 16. When the use area needs to be increased, the teacher can turn the knob 15, and the knob 15 can drive the one-way The screw 14 is rotated upward, so that the bottom end of the one-way screw 14 can be disengaged from the current slot 12, so that the teacher can pull out the secondary magnetic whiteboard 11. After pulling it out to a suitable position, the knob 15 is turned to insert the bottom end of the one-way screw 14 into the corresponding slot 12, so that the secondary magnetic whiteboard 11 can be fixed, and the teacher can also write on the main magnetic whiteboard 7 and the secondary magnetic whiteboard 11. When the device needs to be transported, the two secondary magnetic whiteboards 11 can be retracted into the main magnetic whiteboard 7, and then the overall height can be lowered, which can reduce the volume and facilitate transportation.

[0024] like Figure 1 , Figure 2 and Figure 4As shown, in some embodiments, the surface of the bidirectional screw 3 is symmetrically provided with two sections of threads with opposite spiral directions, and the side walls of the two connecting blocks 5 are respectively provided with threaded holes adapted to the corresponding threads. When the bidirectional screw 3 rotates, the two connecting blocks 5 can be driven to move in opposite directions. A slider 17 is fixed to the bottom of the connecting block 5, and a slide groove 18 adapted to the slider 17 is provided on the top of the base 1, so that the connecting block 5 can move on the base 1 more stably.

[0025] like Figure 1 and Figure 4 As shown, in some embodiments, the surface of the L-shaped block 13 is provided with a threaded hole adapted for the one-way screw 14, and the surfaces of the turn handle 4 and the knob 15 are provided with anti-slip textures, which can play a good anti-slip role, thereby facilitating the user to rotate, and universal self-locking wheels 19 are installed at the four corners of the bottom of the base 1 to facilitate the short-distance movement of the device.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A display stand, comprising a base (1), characterized in that: Two bracket blocks (2) are symmetrically fixed on the top of the base (1), a bidirectional screw (3) is rotatably connected between the two bracket blocks (2) via a bearing, a turning handle (4) is fixed to one end of the bidirectional screw (3), and two connecting blocks (5) are symmetrically threadedly connected on the surface of the bidirectional screw (3), and the two connecting blocks (5) are both slidably connected to the top of the base (1), and the tops of the two connecting blocks (5) are both rotatably connected to a connecting rod (6) via a pin shaft, and the tops of the two connecting rods (6) are rotatably connected to a main magnetic whiteboard (7) via a pin shaft, and two fixing blocks (8) are symmetrically fixed on the back of the main magnetic whiteboard (7), and the bottoms of the two fixing blocks (8) are both fixed with a telescopic sleeve (9) ), the bottoms of the two telescopic sleeves (9) are fixedly connected to the top of the base (1), the two side walls of the main magnetic whiteboard (7) are provided with placement grooves (10), and the placement grooves (10) are slidably installed with auxiliary magnetic whiteboards (11), and the tops of the auxiliary magnetic whiteboards (11) are equidistantly provided with card slots (12), and the tops of the main magnetic whiteboard (7) are fixed with L-shaped blocks (13), one end of the L-shaped block (13) is threadedly connected with a one-way screw (14), and the top of the one-way screw (14) is fixed with a knob (15), and the bottom end of the one-way screw (14) is adapted to the card slot (12), and the surface of the main magnetic whiteboard (7) is adsorbed with a magnetic block (16).

2. A display stand according to claim 1, characterized in that: The surface of the bidirectional screw (3) is symmetrically provided with two sections of threads with opposite spiral directions, and the side walls of the two connecting blocks (5) are respectively provided with threaded holes matched with the corresponding threads.

3. A display stand according to claim 1, characterized in that: A sliding block (17) is fixed to the bottom of each of the connection blocks (5), and a sliding groove (18) adapted to fit the sliding block (17) is provided on the top of the base (1).

4. A display stand according to claim 1, characterized in that: The surface of the L-shaped block (13) is provided with a threaded hole adapted to fit the one-way screw rod (14).

5. A display stand according to claim 1, characterized in that: The surfaces of the turning handle (4) and the knob (15) are both provided with anti-slip patterns.

6. A display stand according to claim 1, characterized in that: Universal self-locking wheels (19) are installed at the four corners of the bottom of the base (1).

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