Lifting white board

Abstract

The utility model relates to the field of lifting whiteboards, in particular to a lifting whiteboard, which adopts the technical scheme that the lifting whiteboard comprises a fixed frame, a guide sliding chute is formed in the middle of the fixed frame, guide frame plates are connected in the guide sliding chute in a sliding manner, a whiteboard is mounted between the adjacent guide frame plates, a connecting rope is mounted on one side of the upper end of the whiteboard, and the connecting rope is connected with the guide frame plates. The white board winding device has the advantages that when the height of the white board needs to be adjusted, the baffle is moved upwards to be inclined to be separated from the ratchet wheel, then the winding wheel is used for winding the connecting rope, the connecting rope drives the white board to move upwards through the guide frame plate, and when the winding wheel is driven to rotate reversely, the white board is wound through the winding assembly. The winding wheel can release the connecting rope, the connecting rope drives the white board to move downwards through the guide frame plate, after the white board moves to the needed position, the pull plate can be loosened, finally, the baffle is moved back to be clamped into the tooth groove in the surface of the ratchet wheel again, and the ratchet wheel and the winding wheel are prevented from rotating automatically.

Description

Technical Field

[0001] The utility model relates to the field of lifting whiteboards, in particular to a lifting whiteboard. Background Art

[0002] The liftable whiteboard in the prior art consists of a frame, a whiteboard, a knob and a bolt, wherein the frame and the whiteboard form an H-shaped structure when assembled. The H-shaped whiteboard can adjust the overall height as needed. During adjustment, since the two side frames of the whiteboard form a sliding connection with the frame, when the required height is adjusted, the knob can be used to drive the bolts to lock the whiteboard frame to the frame on the corresponding side. However, since the bolts on the knob are pressed against the whiteboard frame in a point-to-point manner, the whiteboard will inevitably swing back and forth, causing the whiteboard to tilt. At the same time, long-term compression of the bolts on the knob can easily leave scratches on the whiteboard frame.

[0003] Therefore, it is necessary to invent a lifting whiteboard. Utility Model Content

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

[0005] In order to achieve the above-mentioned object, the utility model provides the following technical solution: a lifting whiteboard, comprising a fixed frame, a guide slot is provided in the middle of the fixed frame, a guide frame is slidably connected inside the guide slot, a whiteboard is installed between adjacent guide frames, a connecting rope is installed on one side of the upper end of the whiteboard, and a winding assembly is installed at the rear lower end of the fixed frame;

[0006] The winding assembly includes a protective box and a ratchet installed in the middle of the inner cavity of the protective box. A telescopic part is installed on one side of the upper end of the protective box, a baffle is installed on the lower end of one side of the telescopic part, and the baffle is hinged with a hinge seat at one end away from the telescopic part.

[0007] Based on the above features: when the height of the whiteboard needs to be adjusted, the telescopic part can be pulled in advance so that the telescopic part drives the baffle to tilt upward. At this time, the baffle will disengage from the ratchet, and then the ratchet can be driven to rotate forward to reel in the connecting rope. When the connecting rope is reeled in, the connecting rope will drive the whiteboard to move upward through the guide frame. When the ratchet is reversed, the ratchet can release the connecting rope. At this time, the connecting rope can drive the whiteboard to move downward through the guide frame. Due to the limitation of the guide slide, the guide frame and the whiteboard maintain vertical movement. When the whiteboard is adjusted to the required position, the telescopic part can be loosened to make the baffle drop and get stuck in the tooth groove on the ratchet surface to prevent the ratchet from rotating by itself.

[0008] Preferably, a connecting rod is fixedly installed in the middle of the guide slot, a through slot is opened on one side of the upper end of the guide slot, and a guide wheel is installed in the middle of the through slot.

[0009] Based on the above features: the connecting rod can guide and limit the guide frame plate. When the connecting rope is reeled in or released, the connecting rope will pass through the inside of the through groove. At this time, rolling friction will be formed between the guide wheel and the connecting rope to prevent the connecting rope from wearing during the reeling and releasing process.

[0010] Preferably, a limiting slot is provided on one side of the guide frame plate, and a through hole is provided in the middle of the guide frame plate.

[0011] Based on the above features: the connecting rod passes through the guide frame plate through the perforation, and the limit slots provided can limit and fix the whiteboard.

[0012] Preferably, limit blocks are symmetrically installed on both sides of the whiteboard.

[0013] Based on the above features: the bottom of the limit slot is sealed, and the limit plugs on both sides of the whiteboard are inserted into the inner side of the limit slot to prevent the whiteboard from falling by itself, while facilitating the guide frame to drive the whiteboard to rise and fall.

[0014] Preferably, a socket A is provided on one side of the upper end of the protective box, rollers are symmetrically installed on both sides of the inner cavity of the socket A, a socket B is provided on the other side of the upper end of the protective box, and a T-shaped slide groove is provided on the upper end of the inner wall of the protective box.

[0015] Based on the above features: the connecting rope passes through the middle of the socket A and penetrates the protective box, and the rollers can limit and clamp the connecting rope on both sides of the socket A to minimize wear of the connecting rope during movement.

[0016] Preferably, a rotating shaft is installed in the middle of the ratchet, a winding wheel is installed in the middle of the rotating shaft, bearings are installed at both ends of the rotating shaft, and a knob is installed on one side of the rotating shaft and the outer end of the protective box.

[0017] Based on the above features: when the ratchet and the reel are driven by the knob and the rotating shaft to adjust the forward and reverse rotation, the reel can reel in and release the connecting rope.

[0018] Preferably, the telescopic part includes a positioning rod and a pull plate fixedly installed on the upper end of the positioning rod, the outer movable sleeve of the positioning rod is equipped with a movable block and a buffer spring, the buffer spring is located at the lower end of the movable block, and a fixed block is fixedly installed on the bottom of the positioning rod.

[0019] Based on the above features: when it is necessary to drive the baffle up and out of the ratchet, the pull plate can be pulled at the outer end. At this time, the pull plate will drive the positioning rod to move up. Since the positioning rod moves through the middle of the movable block, the positioning rod will drive the baffle up through the fixed block, and the fixed block will also squeeze the buffer spring to deform. When the whiteboard is adjusted to the required position, the pull plate can be released. At this time, the buffer spring will rebound the fixed block and the baffle, so that the baffle is re-stuck in the tooth groove on the ratchet surface.

[0020] The beneficial effects of the utility model are:

[0021] 1. When the height of the whiteboard needs to be adjusted, move the baffle up to tilt it and disengage it from the ratchet. Then, the ratchet and reel can be driven to rotate forward through the knob and shaft. At this time, the reel can reel in the connecting rope, and the connecting rope will drive the whiteboard upward through the guide frame. When the reel is driven to reverse, the reel can release the connecting rope, and the connecting rope will also drive the whiteboard downward through the guide frame. When the whiteboard moves to the required position, the pull plate can be released, and finally the baffle can be moved back and re-engaged in the tooth groove on the ratchet surface to prevent the ratchet and reel from rotating on their own. At the same time, there is no need to use bolts to tighten the whiteboard to avoid damage to the whiteboard.

[0022] 2. When the connecting rope is wound or released, it will pass through the inside of the through slot. At this time, the connecting rope will be in close contact with the guide wheel to form rolling friction. At the same time, when the connecting rope passes through the middle of the socket A and passes through the protective box, the rollers can also limit and clamp on both sides of the socket A to avoid wear of the connecting rope during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a lifting whiteboard provided by the utility model;

[0024] Figure 2 This is a disassembled diagram of a lifting whiteboard guide frame and whiteboard provided by the utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of a lifting whiteboard winding assembly provided by the utility model;

[0026] Figure 4 This is a schematic structural diagram of a telescopic component of a lifting whiteboard provided by the utility model.

[0027] In the figure: 1. Fixed frame; 2. Guide slide; 21. Connecting rod; 22. Through slot; 23. Guide wheel; 3. Guide frame plate; 31. Limit slot; 32. Perforation; 4. Whiteboard; 41. Limit plug; 5. Connecting rope; 6. Winding assembly; 61. Protective box; 611. Socket A; 612. Roller; 613. Socket B; 614. T-shaped slide; 62. Ratchet; 621. Rotating shaft; 622. Winding wheel; 623. Bearing; 624. Knob; 63. Telescopic member; 631. Positioning rod; 632. Pull plate; 633. Movable block; 634. Buffer spring; 635. Fixed block; 64. Baffle; 65. Articulated seat. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0029] Refer to the attached Figure 1-4 The utility model provides a lifting whiteboard, comprising a fixing frame 1, a guide slot 2 is provided in the middle of the fixing frame 1, a guide frame 3 is slidably connected inside the guide slot 2, a whiteboard 4 is installed between adjacent guide frames 3, a connecting rope 5 is installed on one side of the upper end of the whiteboard 4, and a winding component 6 is installed at the lower end of the rear of the fixing frame 1;

[0030] The winding assembly 6 includes a protective box 61 and a ratchet 62 installed in the middle of the inner cavity of the protective box 61. A telescopic part 63 is installed on one side of the upper end of the protective box 61, and a baffle 64 is installed on the lower end of one side of the telescopic part 63. The end of the baffle 64 away from the telescopic part 63 is hinged with a hinge seat 65 (the baffle 64 can be tilted through the hinge seat 65).

[0031] When the height of the whiteboard 4 needs to be adjusted, the telescopic member 63 can be pulled in advance so that the telescopic member 63 drives the baffle 64 to tilt upward. At this time, the baffle 64 will disengage from the ratchet 62, and then the ratchet 62 can be driven to rotate forward to reel in the connecting rope 5. When the connecting rope 5 is reeled in, the connecting rope 5 will drive the whiteboard 4 to move upward through the guide frame 3. When the ratchet 62 is reversed, the ratchet 62 can release the connecting rope 5. At this time, the connecting rope 5 can drive the whiteboard 4 to move downward through the guide frame 3. Due to the limitation of the guide slide 2, the guide frame 3 and the whiteboard 4 maintain vertical movement. When the whiteboard 4 is adjusted to the required position, the telescopic member 63 can be released to make the baffle 64 drop down and get stuck in the tooth groove on the surface of the ratchet 62 to prevent the ratchet 62 from rotating on its own.

[0032] Preferably, a connecting rod 21 is fixedly installed in the middle of the guide chute 2, a through slot 22 is opened on one side of the upper end of the guide chute 2, and a guide wheel 23 is installed in the middle of the through slot 22.

[0033] The connecting rod 21 can guide and limit the guide frame plate 3. When the connecting rope 5 is wound or released, the connecting rope 5 will pass through the through groove 22. At this time, rolling friction will be formed between the guide wheel 23 and the connecting rope 5 to prevent the connecting rope 5 from being worn during the winding and releasing process.

[0034] Preferably, a limiting slot 31 is provided on one side of the guide frame plate 3 , and a through hole 32 is provided in the middle of the guide frame plate 3 .

[0035] The connecting rod 21 movably penetrates the guide frame plate 3 through the through hole 32 , and the provided limiting slot 31 can limit and fix the whiteboard 4 .

[0036] Preferably, limiting inserts 41 are symmetrically installed on both sides of the whiteboard 4 .

[0037] The bottom of the limit slot 31 is sealed, and the limit plugs 41 on both sides of the whiteboard 4 are inserted into the inner side of the limit slot 31 to prevent the whiteboard 4 from falling down by itself. At the same time, it is convenient for the guide frame 3 to drive the whiteboard 4 to rise and fall. When the whiteboard 4 needs to be replaced and removed, it is only necessary to pull the whiteboard 4 upward and out of the limit slot 31 with force. It is simple and convenient.

[0038] Preferably, a socket A611 is provided on one side of the upper end of the protective box 61, and rollers 612 are symmetrically installed on both sides of the inner cavity of the socket A611. A socket B613 is provided on the other side of the upper end of the protective box 61, and a T-shaped groove 614 is provided on the upper end of the inner wall of the protective box 61.

[0039] A T-shaped slider is provided at the rear of the articulated seat 65, and the T-shaped slider is slidably connected to the T-shaped slide groove 614, so that when the baffle 64 is tilted, the articulated seat 65 can use the T-shaped slider to slide within the T-shaped slide groove 614 (the T-shaped slider is drawn in the figure, and it is a known technology and will not be described in detail). The connecting rope 5 passes through the middle of the socket A611 and the roller 612 can limit and clamp the connecting rope 5 on both sides of the socket A611 to avoid wear of the connecting rope 5 during movement as much as possible.

[0040] Preferably, a rotating shaft 621 is installed in the middle of the ratchet 62, a winding wheel 622 is sleeved in the middle of the rotating shaft 621, bearings 623 are installed at both ends of the rotating shaft 621, and a knob 624 is installed on one side of the rotating shaft 621 and the outer end of the protective box 61.

[0041] One end of the connecting rope 5 is fixedly connected to the upper end of the guide frame plate 3, and the other end of the connecting rope 5 is fixedly connected to the winding wheel 622. When the ratchet 62 and the winding wheel 622 are driven forward and reverse by the knob 624 and the rotating shaft 621, the winding wheel 622 can reel in and release the connecting rope 5.

[0042] Preferably, the telescopic member 63 includes a positioning rod 631 and a pull plate 632 fixedly installed on the upper end of the positioning rod 631. The outer movable sleeve of the positioning rod 631 is equipped with a movable block 633 and a buffer spring 634. The buffer spring 634 is located at the lower end of the movable block 633. A fixed block 635 is fixedly installed on the bottom of the positioning rod 631.

[0043] The bottom of the rod at the bottom of the fixed block 635 is connected to the baffle 64, and the positioning rod 631 movably passes through the hole B613. The movable block 633 and the buffer spring 634 outside the positioning rod 631 are both located in the inner cavity of the protective box 61, and the diameter of the movable block 633 is larger than the hole B613, so that the movable block 633 cannot pass through the hole B613 to separate from the protective box 61. When it is necessary to drive the baffle 64 to move up and disengage from the ratchet 62, the pull plate 632 can be pulled at the outer end. At this time, the pull plate 632 will drive the positioning rod 631 to move up. Since the positioning rod 631 movably passes through the middle of the movable block 633, the positioning rod 631 will drive the baffle 64 to move up through the fixed block 635, and the fixed block 635 will also squeeze the buffer spring 634 to deform. When the whiteboard 4 is adjusted to the required position, the pull plate 632 can be released. At this time, the buffer spring 634 will rebound the fixed block 635 and the baffle 64, so that the baffle 64 is re-engaged in the tooth groove on the surface of the ratchet 62.

[0044] The use process of the present invention is as follows: when the height of the whiteboard 4 needs to be adjusted, the pull plate 632 can be pulled at the outer end. At this time, the pull plate 632 will drive the positioning rod 631 to move upward. Since the positioning rod 631 moves through the middle of the movable block 633, the positioning rod 631 will drive the baffle 64 to move upward and tilt through the fixed block 635, and the fixed block 635 will also squeeze the buffer spring 634 to deform. When the baffle 64 is separated from the ratchet 62, the ratchet 62 and the winding wheel 622 can be driven by the knob 624 and the rotating shaft 621. When the wheel 622 rotates forward, the winding wheel 622 can wind up the connecting rope 5, and the connecting rope 5 will drive the whiteboard 4 to move upward through the guide frame 3. When the wheel 622 is driven to rotate backward, the winding wheel 622 can release the connecting rope 5, and the connecting rope 5 will also drive the whiteboard 4 to move downward through the guide frame 3. When the whiteboard 4 moves to the required position, the pulling plate 632 can be released, and finally the buffer spring 634 will rebound the fixed block 635 and the baffle 64, so that the baffle 64 is re-engaged in the tooth groove on the surface of the ratchet 62.

[0045] The above are merely preferred embodiments of the present invention. Anyone skilled in the art may utilize the above-described technical solutions to modify the present invention or create equivalent technical solutions. Therefore, any simple modification or equivalent replacement based on the technical solutions of the present invention falls within the scope of protection claimed by the present invention.

Claims

1. A lifting whiteboard, comprising a fixing frame (1), characterized in that: A guide slot (2) is provided in the middle of the fixing frame (1), a guide frame plate (3) is slidably connected inside the guide slot (2), a whiteboard (4) is installed in the middle of the adjacent guide frame plate (3), a connecting rope (5) is installed on one side of the upper end of the whiteboard (4), and a winding assembly (6) is installed at the rear lower end of the fixing frame (1); The winding assembly (6) comprises a protective box (61) and a ratchet (62) installed in the middle of the inner cavity of the protective box (61); a telescopic member (63) is installed on one side of the upper end of the protective box (61); a baffle (64) is installed on the lower end of one side of the telescopic member (63); and an end of the baffle (64) away from the telescopic member (63) is hingedly connected to a hinge seat (65).

2. The lifting whiteboard according to claim 1, characterized in that: A connecting rod (21) is fixedly installed in the middle of the guide slide groove (2), a through groove (22) is opened on one side of the upper end of the guide slide groove (2), and a guide wheel (23) is installed in the middle of the through groove (22).

3. The lifting whiteboard according to claim 1, characterized in that: A limiting slot (31) is provided on one side of the guide frame plate (3), and a through hole (32) is provided in the middle of the guide frame plate (3).

4. The lifting whiteboard according to claim 1, characterized in that: Limiting inserts (41) are symmetrically installed on both sides of the whiteboard (4).

5. The lifting whiteboard according to claim 1, characterized in that: A plug hole A (611) is provided on one side of the upper end of the protection box (61), rollers (612) are symmetrically mounted on both sides of the inner cavity of the plug hole A (611), a plug hole B (613) is provided on the other side of the upper end of the protection box (61), and a T-shaped slide groove (614) is provided on the upper end of the inner wall of the protection box (61).

6. The lifting whiteboard according to claim 1, characterized in that: A rotating shaft (621) is installed in the middle of the ratchet wheel (62), a winding wheel (622) is sleeved in the middle of the rotating shaft (621), bearings (623) are installed at both ends of the rotating shaft (621), and a knob (624) is installed on one side of the outer end of the rotating shaft (621) and the protective box (61).

7. The lifting whiteboard according to claim 1, characterized in that: The telescopic member (63) comprises a positioning rod (631) and a pull plate (632) fixedly mounted on the upper end of the positioning rod (631); a movable block (633) and a buffer spring (634) are movably mounted outside the positioning rod (631); the buffer spring (634) is located at the lower end of the movable block (633); and a fixed block (635) is fixedly mounted on the bottom of the positioning rod (631).

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