Screen elevation angle adjustment structure, screen elevation angle adjustment method and device

Abstract

The present invention discloses a screen elevation angle adjustment structure, comprising: a mounting frame, the mounting frame including a shaft rod portion; a first gear, the first gear being coaxially rotatably mounted on the shaft rod portion of the mounting frame; a second gear, the second gear being mounted on the rotating shaft of the screen through a connecting member and meshing with the first gear; a friction member, the friction member being located between the mounting frame and the first gear and sleeved on the shaft rod portion of the mounting frame; the screen elevation angle adjustment structure of the present invention, through the cooperation between the mounting frame, the first gear, the friction member, the elastic member and the fastener, the first gear generates a damping force with the friction member under the cooperation of the fastener and the elastic member, and the fastener can flexibly adjust the magnitude of the damping force of the first gear to adapt to different usage scenarios; the first gear and the second gear cooperate to replace the existing structure, which is not only simple in structure, but also saves the installation cost and subsequent maintenance cost.

Description

Technical Field

[0001] The invention belongs to the technical field of paperless conferences and relates to a screen elevation adjustment structure, a screen elevation adjustment method and a device. Background Art

[0002] With the development of technology, paperless conference systems have been widely used in conference rooms of major enterprises and institutions. When people are in a meeting, they can watch the screen in front of them to understand the issues discussed in the meeting and the documents and content shared during the meeting. Through the application of paperless conference systems, the printing paper needed for the meeting can be effectively saved.

[0003] As an indispensable part of the paperless conference system, the paperless lifting terminal is centered on the paperless lifting terminal, integrating high-definition video and unified communication functions, intelligent multi-screen interactive sharing functions, intelligent conference room central control, audio and video acquisition and sound reinforcement systems, etc., to form an intelligent conference.

[0004] In order to facilitate the comfort of different participants when using the paperless lifting terminal to view their screens, most paperless lifting terminals will be equipped with a screen elevation device to facilitate adjustment of the screen elevation angle.

[0005] Such as existing products such as Figure 1 and Figure 2 As shown, the screen is adjusted in angle by an elevation device, and the elevation device comprises an adjustment motor (9'), a first connecting member (21), and a second connecting member (22); wherein one end of the first connecting member (21) is provided with a limiting rod, and one end of the second connecting member (22) is provided with a waist-shaped hole matched with the limiting rod, and the limiting rod can move in the waist-shaped hole; the end of the first connecting member (21) away from the limiting rod is fixed to the output shaft of the elevation motor, and the end of the second connecting member (22) away from the waist-shaped hole is fixed to the screen shaft; under the cooperation of the first connecting member (21) and the second connecting member (22), the elevation motor drives the screen to adjust its angle; in order to ensure the stability of the screen after the angle is adjusted, the elevation motor mostly adopts a self-locking method, that is, the elevation angle of the screen cannot be manually fine-tuned, which cannot well meet the user's usage experience.

[0006] To overcome the above drawbacks, the elevation motors used in some paperless lifting terminals have a micro-rotation function, but the cost of such elevation motors is relatively high and they are not suitable for large-scale use. Some paperless lifting terminals design the screen's rotating shaft as a damping rotating shaft. However, with long-term use, the damping effect of the damping rotating shaft gradually decreases, and usually a new damping rotating shaft needs to be replaced, which leads to an increase in subsequent maintenance costs. Therefore, there is an urgent need to design a structure that can replace the existing screen elevation and can reduce the production and maintenance costs. To solve the above problems, the present invention proposes a screen elevation adjustment structure, a screen elevation adjustment method, and a device. Summary of the Invention

[0007] To solve the problems in the background technology, the present invention proposes a screen elevation adjustment structure, a screen elevation adjustment method, and a device.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows: A screen elevation adjustment structure, comprising:

[0009] A mounting bracket, the mounting bracket includes a shaft rod portion;

[0010] A first gear, the first gear is coaxially rotatably mounted on the shaft rod portion of the mounting bracket;

[0011] A second gear, the second gear is mounted on the rotating shaft of the screen through a connecting member and meshes with the first gear;

[0012] A friction member, the friction member is located between the mounting bracket and the first gear and is sleeved on the shaft rod portion of the mounting bracket;

[0013] An elastic member, the elastic member is located between the mounting bracket and the friction member and is sleeved on the shaft rod portion of the mounting bracket;

[0014] A fastener, the fastener is mounted on the mounting bracket and adjusts the damping magnitude of the first gear.

[0015] Further, the mounting bracket further includes a limiting portion; the fastener cooperates with the limiting portion to clamp the first gear, the friction member, and the elastic member therebetween.

[0016] Further, the friction member includes a friction plate and an abutting plate; the elastic member is located between the friction plate and the abutting plate.

[0017] Further, the elastic member includes an elastic sheet.

[0018] Further, opposite sides of the elastic sheet respectively bulge outward to form a first abutting portion and a second abutting portion; the first abutting portion and the second abutting portion respectively abut against the friction plate and / or the abutting plate.

[0019] Furthermore, a spiral groove is formed on the outer edge surface of the shaft portion, and the fastener is a fastening nut matched with the spiral groove.

[0020] Furthermore, a limiting surface is provided on the outer edge surface of the shaft portion along its length direction, and the inner holes of the friction plate and the abutment plate are waist-shaped holes matched with the limiting surface.

[0021] A screen elevation angle adjustment method, comprising a screen elevation angle adjustment structure, comprising:

[0022] S1. Install the mounting frame at an appropriate position of the device, sleeve the elastic member, the friction member, and the first gear on the shaft of the mounting frame in sequence, and lock them with fasteners;

[0023] S2. Adjust the damping of the first gear to an appropriate value through a fastener;

[0024] S3, fixing the second gear on the rotating shaft of the screen through a connecting member, and meshing the second gear with the first gear;

[0025] S4. Manually rotate the screen to an appropriate angle as needed.

[0026] A device comprises a screen elevation adjustment structure and an angle adjustment motor. The end of the mounting frame away from the shaft portion is coaxially fixed on the output shaft of the angle adjustment motor through a coupling.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The screen elevation adjustment structure of the present invention cooperates between the mounting frame, the first gear, the friction member, the elastic member and the fastener. The first gear generates a damping force with the friction member under the cooperation of the fastener and the elastic member, and the fastener can flexibly adjust the damping force of the first gear to adapt to different usage scenarios; the first gear cooperates with the second gear to replace the existing structure, which is not only simple in structure but also saves installation costs and subsequent maintenance costs.

[0029] 2. After the screen elevation adjustment structure of the present invention is installed in the paperless lifting terminal, the screen elevation can be operated by an angle adjustment motor or manually according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of existing products;

[0031] Figure 2 It is a structural schematic diagram of the elevation device in the existing product;

[0032] Figure 3 It is the paperless lifting terminal of the present invention;

[0033] Figure 4 is Figure 3 The enlarged view of part A in

[0034] Figure 5 is the structural schematic diagram of the screen elevation angle adjustment structure in the present invention.

[0035] In the figure: 1, mounting bracket; 101, shaft rod part; 102, limiting part; 2, first gear; 3, second gear; 4, connecting part; 5, screen; 6, friction part; 601, friction plate; 602, abutting plate; 701, elastic plate; 8, fastener; 9, angle adjustment motor; 21, first connecting part; 22, second connecting part. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] As Figures 3 - 5 shown, the technical solution adopted by the present invention is as follows: a screen elevation angle adjustment structure, including a mounting bracket 1, a first gear 2, a second gear 3, a friction part 6, an elastic part and a fastener 8.

[0038] Among them, the mounting bracket 1 includes a limiting part 102 and a shaft rod part 101. The elastic part, the friction part 6 and the first gear 2 can all be sleeved on the shaft rod part 101 of the mounting bracket 1 in sequence; when the elastic part, the friction part 6 and the first gear 2 are correspondingly mounted on the shaft rod part 101, under the cooperation of the fastener 8 and the limiting part 102, the first gear 2, the friction part 6 and the elastic part are clamped therebetween. Thus, when the first gear 2 rotates around the shaft rod part 101, there is a rotational damping between the first gear 2 and the friction part 6; by adjusting the extrusion degree of the fastener 8 pressing the first gear 2 and the friction part 6, the damping size between the first gear 2 and the friction part 6 is changed, so as to select a suitable damping; at the same time, when the damping changes after long-term use, only by adjusting the fastener 8 can it be done, improving the maintenance efficiency and reducing the maintenance cost.

[0039] In this embodiment, the first gear 2 is coaxially and rotatably mounted on the shaft rod part 101; the second gear 3 is mounted on the rotating shaft of the screen 5 through the connecting part 4 and meshes with the first gear 2; the friction part 6 is located between the limiting part 102 of the mounting bracket 1 and the first gear 2 and is sleeved on the shaft rod part 101 of the mounting bracket 1; the elastic part is located between the limiting part 102 of the mounting bracket 1 and the friction part 6 and is sleeved on the shaft rod part 101.

[0040] It should be added that the friction member 6 includes a friction plate 601 and an abutting plate 602; the elastic member is installed between the friction plate 601 and the abutting plate 602; wherein the abutting plate 602 abuts against the limiting portion 102 of the mounting bracket 1, and the friction plate 601 abuts against the outer wall of the first gear 2 and cooperates with the first gear 2.

[0041] It should be added that the elastic member can be a nylon rubber ring, a rubber ring, a spring, an elastic piece 701 or other elastic components with elasticity; in this embodiment, the elastic member is preferably the elastic piece 701; the outer diameter of the elastic piece 701 is the same as that of the friction plate 601 and the abutting plate 602; the elastic member undergoes elastic deformation between the abutting plate 602 and the friction plate 601, and applies an elastic force towards the fastener 8 to the friction plate 601. Thus, when the first gear 2 rotates, friction occurs between the friction plate 601 and the first gear 2, and friction occurs between the first gear 2 and the fastener 8, generating a damping force.

[0042] It should be noted that the two opposite sides of the elastic piece 701 bulge outwards respectively, and an abutting portion with an S-shaped cross-section is formed. The abutting portions on both sides of the elastic piece 701 are respectively denoted as the first abutting portion and the second abutting portion; when the elastic piece 701 is installed between the friction plate 601 and the abutting plate 602, the first abutting portion abuts against the friction plate 601 or the abutting plate 602, and the second abutting portion abuts against the abutting plate 602 or the friction plate 601; the above design not only increases the elastic amount when the elastic piece 701 deforms, but also makes the elastic force acting on the friction plate 601 and the abutting plate 602 more uniform, thereby ensuring that the friction between the friction plate 601 and the first gear 2 is more uniform and reducing the wear degree of the surfaces of the friction plate 601 and the first gear 2.

[0043] It should be added that in order to reduce the wear of the first gear 2 and improve the service life of the first gear 2; auxiliary friction plates 601 are coaxially installed on both opposite sides of the first gear 2, and the auxiliary friction plates 601 cooperate with the friction plate 601. In order to ensure the installation accuracy between the auxiliary friction plate 601 and the first gear 2, clamping grooves are integrally formed on both opposite sides of the first gear 2, and the auxiliary friction plates 601 are installed in the clamping grooves; the installation method between the auxiliary friction plates 601 and the first gear 2 is the prior art, and those skilled in the art can directly obtain it.

[0044] In this embodiment, a spiral groove is provided on the outer edge surface of the shaft rod portion 101, and the fastener 8 is a fastening nut adapted to the spiral groove; the fastening nut is preferably a locknut to prevent the fastening nut from loosening during the rotation of the first gear 2, ensuring the damping amount between the first gear 2 and the friction plate 601, and thus ensuring the stability after the screen 5 is tilted upwards.

[0045] In this embodiment, a limited surface is provided on the outer edge surface of the shaft portion 101 along its length direction, and the inner holes of the friction plate 601 and the abutment plate 602 are waist-shaped holes that are compatible with the limited surface; when the friction plate 601 and the abutment plate 602 are installed on the shaft portion 101, the friction plate 601 and the abutment plate 602 do not rotate relative to the shaft portion 101, on the one hand, it ensures that the elastic plate 701 can stably transfer the elastic force to the friction plate 601, and on the other hand, when the first gear 2 and the shaft portion 101 rotate relative to each other, the friction plate 601 can smoothly rub against the first gear 2 to ensure the damping degree of the first gear 2.

[0046] This embodiment provides a screen elevation angle adjustment method, which is used in the above screen elevation angle adjustment structure, including:

[0047] S1. Install the mounting frame 1 at an appropriate position of the device, sleeve the elastic member, the friction member 6, and the first gear 2 on the shaft of the mounting frame 1 in sequence, and lock them with the fastener 8;

[0048] S2, adjusting the damping of the first gear 2 to an appropriate value through the fastener 8;

[0049] S3, fixing the second gear 3 on the rotating shaft of the screen 5 through the connecting member 4, and meshing with the first gear 2;

[0050] S4. Manually rotate the screen 5 to a proper angle as required.

[0051] This embodiment also provides a device, which can be a paperless lifting terminal, including the above-mentioned screen elevation adjustment structure; wherein the device also includes an angle adjustment motor 9 and a motor mounting seat; the angle adjustment motor 9 is installed on the lifter of the paperless lifting terminal through the motor mounting seat, and the end of the mounting frame 1 away from the shaft portion 101 is integrally formed with a rotating shaft portion, and the shaft portion 101 is coaxially arranged with the rotating shaft portion; the rotating shaft portion of the mounting frame 1 is installed on the output shaft of the angle adjustment motor 9 through a coupling, so that the mounting frame 1 is installed on the angle adjustment motor 9.

[0052] It should be added that, in order to adapt to the paperless lifting terminal, the second gear 3 is designed as a fan-shaped gear and is fixed to the rotating shaft of the screen 5 through a connecting member 4. The second gear 3 is coaxially arranged with the rotating shaft of the screen 5.

[0053] When the screen elevation adjustment structure is applied to the paperless lifting terminal, the screen elevation adjustment includes two adjustment methods:

[0054] ① Adjustment through the angle adjustment motor 9, specifically:

[0055] Adjust the damping of the first gear 2 to an appropriate value through the fastener 8, that is, under the action of the first gear 2 and the friction plate 601, when the screen 5 is in a free state and does not change in angle, the angle adjustment motor 9 drives the mounting bracket 1 to rotate through the coupling. Due to the damping effect of the first gear 2, the mounting bracket 1 drives the first gear 2 to rotate, the first gear 2 drives the second gear 3 to rotate, and the second gear 3 drives the screen 5 to perform an elevation action.

[0056] ② Manually adjust it, specifically:

[0057] Adjust the damping of the first gear 2 to an appropriate value through the fastener 8, that is, under the action of the first gear 2 and the friction plate 601, when the screen 5 is in a free state and does not change in angle, at this time the angle adjustment motor 9 is in a self-locking state, and manually overcome the damping effect of the first gear 2 to drive the screen 5 to rotate, so that the screen 5 performs an elevation action.

[0058] The above operations are all carried out after the screen 5 is fully extended out of the paperless lifting terminal.

[0059] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A screen elevation angle adjustment structure, characterized in that, include: A mounting frame (1), the mounting frame (1) comprising a shaft portion (101); A first gear (2), the first gear (2) being coaxially rotatably mounted on a shaft portion (101) of the mounting frame (1); A second gear (3), the second gear (3) being mounted on the rotating shaft of the screen (5) via a connecting member (4) and meshing with the first gear (2); A friction member (6), the friction member (6) being located between the mounting frame (1) and the first gear (2), and being sleeved on the shaft portion (101) of the mounting frame (1); An elastic member, the elastic member being located between the mounting frame (1) and the friction member (6), and being sleeved on the shaft portion (101) of the mounting frame (1); A fastener (8), the fastener (8) being mounted on the mounting frame (1) and adjusting the damping magnitude of the first gear (2); An angle-adjustable motor (9), wherein the end of the mounting frame (1) facing away from the shaft portion (101) is coaxially fixed to the output shaft of the angle-adjustable motor (9) via a coupling.

2. The screen elevation angle adjustment structure according to claim 1, characterized in that: The mounting frame (1) further comprises a limiting portion (102); the fastener (8) cooperates with the limiting portion (102) to clamp the first gear (2), the friction member (6) and the elastic member therebetween.

3. The screen elevation angle adjustment structure according to claim 2, wherein: The friction member (6) comprises a friction plate (601) and an abutment plate (602); the elastic member is located between the friction plate (601) and the abutment plate (602).

4. The screen elevation angle adjustment structure according to claim 3, wherein: The elastic member comprises an elastic sheet (701).

5. The screen elevation angle adjustment structure according to claim 4, characterized in that: The opposite sides of the elastic sheet (701) protrude outwards respectively to form a first abutting portion and a second abutting portion; the first abutting portion and the second abutting portion abut against the friction sheet (601) and / or the abutting sheet (602) respectively.

6. The screen elevation angle adjustment structure according to claim 4, wherein: The outer edge surface of the shaft portion (101) is provided with a spiral groove, and the fastener (8) is a fastening nut matched with the spiral groove.

7. The screen elevation angle adjustment structure according to claim 6, characterized in that: The outer edge surface of the shaft portion (101) is provided with a limiting surface along its length direction, and the inner holes of the friction plate (601) and the abutment plate (602) are both waist-shaped holes adapted to the limiting surface.

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