Panel rotation adjusting mechanism of light display support

Abstract

The utility model discloses a panel rotation adjusting mechanism of a light display support, a panel can be rotatably installed on a base, the panel or the base is provided with a plurality of clamping grooves which are arranged at intervals along an arc-shaped path concentric with a panel rotating shaft, the base or the panel is provided with at least one clamping piece which can slide for a set distance along the radial direction of the base, and the clamping piece is arranged on the panel. The clamping piece slides in a reciprocating mode and can be inserted into or retreat from the clamping groove right opposite to the clamping piece, the clamping piece makes contact with the two side walls, in the rotating direction of the panel, of the clamping groove through inclined faces, the clamping piece reset elastic piece provides elastic holding force towards the clamping groove direction for the clamping piece, and therefore the clamping piece is kept in the locked state of being inserted into the clamping groove when not subjected to external force. When the horizontal rotation angle of the display is adjusted, the screws do not need to be turned repeatedly, operation is convenient and labor-saving, the operation can be easily completed by a single person, after adjustment, the display is automatically kept at the adjusted angle, and the dip angle of the panel does not need to be adjusted frequently.

Description

Technical Field

[0001] The utility model relates to a display bracket, in particular to a panel rotation adjustment mechanism of a light display bracket. Background Art

[0002] The display stand is generally fixed with a panel to install the display. After the display is installed, it is sometimes not parallel to the horizontal plane and has a certain inclination angle. At this time, it is necessary to rotate the panel to adjust the angle of the display. At present, the panel of the display stand is rotatably installed on the base of the display stand by a rivet or a screw. In order to prevent the rotation angle from being too large, one or two round holes are eccentrically set on the base, and one or two arc holes are set on the panel. The rotation angle of the panel is restricted by passing the screws through the round holes and the arc holes. When adjusting the angle of the panel of this structure, it is necessary to loosen the screws to adjust the panel inclination. After the adjustment is completed, it is necessary to tighten the screws. When rotating the screws, someone needs to hold the display by hand. This adjustment structure is complicated and inconvenient to adjust. After the adjustment is completed, it completely relies on friction to maintain the panel angle. After a period of time, the panel will rotate an angle by itself under the action of the torque generated by gravity, so that the panel needs to be adjusted frequently. Utility Model Content

[0003] In order to overcome the above-mentioned defects, the utility model provides a panel rotation adjustment mechanism for a lightweight display stand, which can quickly and easily adjust the angle of the panel on which the lightweight display is installed, and after adjustment, the angle of the panel on which the lightweight display is installed automatically remains unchanged.

[0004] The utility model adopts a technical solution to solve the technical problem: a panel rotation adjustment mechanism of a light display stand, comprising a panel, a base, a clamp and a clamp reset elastic member, wherein the panel can be rotatably mounted on the base;

[0005] The panel is provided with a plurality of slots arranged at intervals along an arc-shaped path, and the base is provided with at least one clamping member capable of sliding a set distance along the radial direction of the base;

[0006] Alternatively, the base is provided with a plurality of slots arranged at intervals along an arc-shaped path, and the panel is provided with at least one clamping member capable of sliding a set distance along the radial direction of the panel;

[0007] The arc-shaped path of the arrangement of the card slots is concentric with the rotating axis of the panel and the base. The card member can be inserted into or exit a card slot opposite it by reciprocating sliding. The card member contacts the two side walls of the card slot along the rotation direction of the panel through the inclined surface. The card member reset elastic member can provide the card member with an elastic retaining force in the direction of the card slot, thereby allowing the card member to remain in a locked state inserted in the card slot when not subject to external force.

[0008] As a further improvement of the utility model, the card slot on the panel or the base is a V-shaped slot, and one end of the card piece forms a card point of a triangular structure matching the card slot.

[0009] As a further improvement of the present invention, the angle between the two side surfaces of the V-shaped groove and the central plane perpendicular to the bottom surface of the V-shaped groove is set as the inclination angle of the two side surfaces of the groove, and the inclination angles of the two side surfaces of the V-shaped groove are different, so that the torque value when the panel rotates upward to force the card to exit the slot is smaller than the torque value when the panel rotates downward to force the card to exit the slot.

[0010] As a further improvement of the present utility model, the structure of the card sliding a set distance on the base or panel is as follows: the base or panel is provided with a T-shaped slide groove extending radially along its rotating axis and with a width at one end smaller than the width of the other end; the card is a T-shaped structure with a width at one end smaller than the width at the other end; the card can be slidably inserted in the T-shaped slide groove; the step surface between the two ends of the card is stopped on the step surface between the two ends of the T-shaped slide groove; one end of the card can extend outward of the end with a smaller width of the T-shaped slide groove for a set distance; the other end of the card is formed with a groove structure or a guide protrusion or an extrusion plane; one end of the card reset elastic member is inserted in the groove structure at the other end of the base or panel or is sleeved on the outside of the guide protrusion or in close contact with the surface of the extrusion plane; the other end of the card reset elastic member is tightly against the bottom surface of the other end of the T-shaped slide groove.

[0011] As a further improvement of the utility model, the panel or base is symmetrically provided with two groups of slots arranged at intervals along a circular arc path, and the base or panel is symmetrically provided with two T-shaped slide grooves. The two clips can be slidably inserted in the two T-shaped slide grooves respectively, and one end of the two clips can extend out of one end of the two T-shaped slide grooves respectively and be correspondingly plugged into any one of the two groups of slots.

[0012] As a further improvement of the present invention, the other end of the card is a U-shaped structure, and a groove structure is formed between the inside of the U-shaped structure and the inner side wall of the T-shaped slide groove to accommodate one end of the card reset elastic member. The length of one side wall of the U-shaped structure at the other end of the card is greater than the length of the other side wall. The other ends of the two T-shaped slide grooves are connected by a channel, and one side of the U-shaped structure at the other end of the card can extend into the channel and slide along the channel.

[0013] As a further improvement of the present invention, the structure of the panel rotatably installed on the base is: a through hole is provided on the center of the panel, the base includes a base body and a circular boss, the circular boss is coaxially fixed to one axial end of the base body, and the diameter of the circular boss is smaller than the diameter of the base body. The circular boss can be rotatably inserted in the through hole of the panel, and a clamping plate, an upper positioning sleeve, a lower positioning sleeve and a connecting screw are also provided. The clamping plate and the circular boss of the base are fixedly connected by connecting screws, and the upper positioning sleeve and the lower positioning sleeve are both sleeved on the outer side of the circumference of the circular boss of the base, the upper positioning sleeve is tightly clamped between the clamping plate and one side of the panel, and the lower positioning sleeve is tightly clamped between the base body and the other side of the panel, the slot is formed on the inner side wall of the through hole of the panel, and the clamp is installed on the circular boss of the base.

[0014] As a further improvement of the present invention, the through hole in the center of the panel is a countersunk through hole structure, the base body can be rotatably inserted in the countersunk of the countersunk through hole structure, the circular boss of the base can be rotatably inserted in the through hole of the countersunk through hole structure, and the base body is provided with a positioning groove on the end surface facing away from the panel, which is opposite to the connecting protrusion on the display bracket, and the base body is located on the bottom surface of the positioning groove and is provided with a countersunk hole that can be opposite to the threaded hole on the connecting protrusion of the display bracket.

[0015] As a further improvement of the utility model, a convex ring is formed on the end face of one axial end of the lower positioning sleeve, and the convex ring can be inserted into the through hole of the countersunk through hole structure of the panel. The lower positioning sleeve and the convex ring side wall thereon are provided with an avoidance notch for avoiding the card part, and the card part can be inserted into the card slot on the panel through the avoidance notch.

[0016] As a further improvement of the utility model, the card slot is arranged on the inner side wall of the through hole of the panel, and the central angle of the arc path of the arrangement of the plurality of card slots is 90°.

[0017] The beneficial effects of the utility model are as follows: a card slot and a card part are arranged between the panel and the base, and elastic force is provided to the card part through the automatic reset elasticity of the card part, so that the card part is always engaged with the card slot and positioned when not subjected to external force, thereby locking the panel. The card slot and the card part of the utility model adopt inclined surface contact along the rotation direction of the panel. When the display is rotated, the card part can automatically withdraw from the card slot. When adjusting the horizontal angle of the display, it is only necessary to rotate the display with force without repeatedly tightening the screws. The operation is convenient and labor-saving, and can be easily completed by one person. After the horizontal angle of the display is adjusted, the display can be directly released without any further operation. The display can automatically maintain the adjusted angle unchanged, and there is no need to frequently adjust the panel inclination angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a three-dimensional exploded view of the utility model;

[0019] Figure 2 It is the front view of the utility model;

[0020] Figure 3 When the utility model is in unlocked state Figure 2 Middle AA section view;

[0021] Figure 4 When the utility model is in a locked state Figure 2 Middle AA section view;

[0022] Figure 5 It is a three-dimensional diagram of the panel of the utility model;

[0023] Figure 6 It is a three-dimensional diagram of the card of the utility model;

[0024] Figure 7 It is a three-dimensional diagram of the base of the utility model;

[0025] Figure 8 This is a three-dimensional diagram of the lower positioning sleeve of the utility model;

[0026] Fig. 9 It is a three-dimensional diagram of the utility model;

[0027] Fig.10 This is a state diagram of the display on the panel of the utility model when the viewing direction is parallel to the ground;

[0028] Fig.11 This is a state diagram of the display on the panel of the present invention when the viewing direction is perpendicular to the ground. DETAILED DESCRIPTION

[0029] Embodiment: A panel 1 rotation adjustment mechanism of a light display stand, comprising a panel 1, a base 2, a clamp 3 and a clamp reset elastic member 6, wherein the panel 1 can be rotatably mounted on the base 2;

[0030] The panel 1 is provided with a plurality of slots 4 arranged at intervals along an arc-shaped path, and the base 2 is provided with at least one clamping member 3 capable of sliding radially along the base 2 for a set distance;

[0031] Alternatively, the base 2 is provided with a plurality of slots 4 arranged at intervals along an arc-shaped path, and the panel 1 is provided with at least one clamping member 3 capable of sliding radially along the panel 1 for a set distance;

[0032] The arc-shaped path in which the card slots 4 are arranged is concentric with the rotation axis of the panel 1 and the base 2. The card member 3 can be inserted into or withdrawn from a card slot 4 opposite to it by reciprocating sliding. The card member 3 contacts the two side walls of the card slot 4 along the rotation direction of the panel 1 through the inclined surfaces. The card member reset elastic member 6 can provide the card member 3 with an elastic retaining force in the direction of the card slot 4, thereby allowing the card member 3 to remain in a locked state inserted in the card slot 4 when not subject to external force.

[0033] The card member 3 slides on the base 2 or the panel 1 so that the card member 3 is plugged into and locked or disengaged from the card slot 4. When no external force is applied, the card member 3 is always in a pop-up state due to the elastic force of the card member reset elastic member 6, that is, it maintains a plugged and locked state with the card slot 4. At this time, the panel 1 and the base 2 remain in a fixed and positioned state, the panel 1 cannot rotate, and the display installed on the panel 1 remains in the adjusted angle state for display.

[0034] When the user needs to adjust the horizontal angle of the display, such as turning it from a horizontal screen to a vertical screen, the user only needs to grab the display and rotate it. At this time, the panel 1 rotates around the rotation axis between it and the base 2. During the rotation, the side wall of the card member 3 along the rotation direction of the panel 1 is pressed by the side wall of the card slot 4. Since the side wall of the card member 3 and the card slot 4 along the rotation direction of the panel 1 are in contact with an inclined surface (an inclined straight surface or an inclined arc surface), the card member 3 will overcome the elastic force of the elastic reset member of the card member 3 and exit the card slot 4 backward. When the panel 1 is rotated to a suitable angle, the panel 1 stops rotating further, and the card member 3 is in contact with the side wall of the card slot 4 along the rotation direction of the panel 1. Under the elastic force of the elastic reset member of the card member 3, the card member 3 automatically extends out and is stuck in the corresponding card slot 4. At this time, the card member 3 is no longer affected by external force, and is kept in the card slot 4 to lock the panel 1. The panel 1 remains in the adjusted angular position unchanged. This structure can realize the automatic locking of the panel 1 and the base 2. When adjusting the horizontal angle of the display, you only need to directly rotate the display. No other operations are required after adjustment. The structure is simple and easy to operate. This structure is suitable for the horizontal angle adjustment mechanism of a light display, and can keep the horizontal angle of the display stable after adjustment.

[0035] The card slot 4 on the panel 1 or the base 2 is a V-shaped slot, and one end of the card member 3 forms a card point 5 of a triangular structure matching the card slot 4. Since the card slot 4 is a V-shaped slot, and the card point 5 on the card member 3 is a triangular structure matching therewith, when the panel 1 is rotated with force, the inclined surface of the V-shaped slot forces the card point 5 of the card member 3 to exit the card slot 4 and thus complete the rotation of the panel 1. After the external force on the panel 1 stops, the card member 3 is reset under the action of the card member reset elastic member 6, and the card point 5 on the card member 3 is inserted into a card slot 4 directly opposite thereto, so as to realize the positioning of the panel 1. This structure can be applied to the installation of a display with a relatively light weight.

[0036] Assume that the angle between the two side surfaces of the V-shaped slot 4 and the central plane perpendicular to the bottom surface of the V-shaped slot 4 is the inclination angle of the two side surfaces of the slot 4. The inclination angles of the two side surfaces of the V-shaped slot 4 are different, so that the torque value of the panel 1 rotating upward to force the card 3 to exit the slot 4 is smaller than the torque value of the panel 1 rotating downward to force the card 3 to exit the slot 4.

[0037] When the display is rotated upward, it is necessary to overcome the interference force forcing the card 3 to exit the slot 4 and the display's own gravity. Therefore, appropriately reducing the interference force that forces the card 3 to exit the slot 4 can reduce the rotational resistance when the user rotates the display upward, and prevent the situation where the combined force is too large to be difficult to pull upward. When the display is rotated downward, the combination of the display's own gravity and the torque exerted by the user can overcome the interference force that forces the card 3 to exit the slot 4. In order to prevent the panel 1 from rotating by itself under the action of the display's gravity, therefore, appropriately increasing the interference force for the card 3 to exit the slot 4. The larger the inclination angle of the two side surfaces of the V-shaped slot 4, the smaller the interference force, and the smaller the inclination angle of the two side surfaces of the V-shaped slot 4, the greater the interference force. The inclination angle of the two side surfaces of the V-shaped slot 4 can be designed according to needs, thereby effectively meeting the different resistance sizes of the display rotating in different directions, and thereby adapting to the eccentricity of the center of gravity of the display and the rotation axis of the panel 1.

[0038] The structure of the card 3 sliding a set distance on the base 2 or the panel 1 is as follows: the base 2 or the panel 1 is provided with a T-shaped slide groove 7 which extends radially along its rotating axis and has a width at one end smaller than that at the other end; the card 3 is a T-shaped structure with a width at one end smaller than that at the other end; the card 3 can be slidably inserted into the T-shaped slide groove 7; the step surface between the two ends of the card 3 is stopped on the step surface between the two ends of the T-shaped slide groove 7; one end of the card 3 can extend outward of the end with a smaller width of the T-shaped slide groove 7 to set a distance; a groove structure 8 or a guide protrusion or an extrusion plane is formed at the other end of the card 3; one end of the card reset elastic member 6 is inserted into the groove structure 8 at the other end of the base 2 or the panel 1 or is sleeved on the outside of the guide protrusion or in close contact with the surface of the extrusion plane; the other end of the card reset elastic member 6 is tightly against the bottom surface of the other end of the T-shaped slide groove 7.

[0039] The sliding distance is limited by sliding the T-shaped clamp 3 in the T-shaped slide groove 7. A groove structure 8 is set at the other end of the clamp 3 to position the reset member of the clamp 3 to prevent the clamp reset elastic member 6 from deforming in the wrong direction during elastic deformation. The clamp reset elastic member 6 is preferably a compression spring, but can also be a spring.

[0040] The panel 1 or the base 2 is symmetrically provided with two groups of slots 4 arranged at intervals along an arc-shaped path, and the base 2 or the panel 1 is symmetrically provided with two T-shaped slots 7, and the two clips 3 can be slidably inserted in the two T-shaped slots 7, and one end of the two clips 3 can extend out of one end of the two T-shaped slots 7 and be correspondingly inserted with any one of the two groups of slots 4. The two clips 3 are symmetrically inserted in the two groups of slots 4, which can improve the strength and stability of the locking of the panel 1. Of course, it can also be one clip point 5 and one group of slots 4, or more clip points 5 and more groups of slots 4.

[0041] The other end of the card 3 is a U-shaped structure, and a groove structure 8 is formed between the inside of the U-shaped structure and the inner side wall of the T-shaped slide groove 7 to accommodate one end of the card reset elastic member 6. The length of one side wall of the U-shaped structure at the other end of the card 3 is greater than the length of the other side wall. The other ends of the two T-shaped slide grooves 7 are connected by a channel 9, and one side of the U-shaped structure at the other end of the card 3 can extend into the channel and slide along the channel.

[0042] The clamping member 3 of this structure can occupy a small space and can make the base 2 smaller in size.

[0043] The structure in which the panel 1 is rotatably mounted on the base 2 is as follows: a through hole 10 is provided at the center of the panel 1, and the base 2 includes a base body 11 and a circular boss 12, wherein the circular boss 12 is coaxially fixed to one axial end of the base body 11, and the diameter of the circular boss 12 is smaller than the diameter of the base body 11, and the circular boss 12 is rotatably inserted into the through hole 10 of the panel 1, and is further provided with a clamping plate 13, an upper positioning sleeve 14, a lower positioning sleeve 15 and a connecting screw 16. The clamping disc 13 and the circular boss 12 of the base 2 are fixedly connected by connecting screws 16, and the upper positioning sleeve 14 and the lower positioning sleeve 15 are both sleeved on the outer circumference of the circular boss 12 of the base 2, the upper positioning sleeve 14 is tightly clamped between the clamping disc 13 and one side of the panel 1, and the lower positioning sleeve 15 is tightly clamped between the base body 11 and the other side of the panel 1, the card slot 4 is formed on the inner wall of the through hole 10 of the panel 1, and the clamp 3 is installed on the circular boss 12 of the base 2. The upper positioning sleeve 14 and the lower positioning sleeve 15 are preferably wear-resistant plastic parts, which play a role in increasing friction, providing friction resistance when the panel 1 rotates, and preventing the panel 1 from rotating rapidly at the moment when the clamp 3 and the card slot 4 are unlocked.

[0044] The through hole 10 in the center of the panel 1 is a countersunk through hole structure, the base body 11 can be rotatably inserted in the countersunk of the countersunk through hole structure, the circular boss 12 of the base 2 can be rotatably inserted in the through hole of the countersunk through hole structure, the end surface of the base body 11 facing away from the panel 1 is provided with a positioning groove 17 that is directly opposite to the connecting protrusion on the display bracket, and the base body 11 is located on the bottom surface of the positioning groove 17. A countersunk hole 18 that can be directly opposite to the threaded hole on the connecting protrusion of the display bracket is provided. The through hole 10 in the center of the panel 1 is designed as a countersunk through hole structure, and the base body 11 can be hidden in the countersunk, making the overall structure more beautiful, and the base body 11 also bears the gravity of the panel 1, which is conducive to improving the overall connection strength and preventing breakage.

[0045] A convex ring 19 is formed on the end surface of one axial end of the lower positioning sleeve 15, and the convex ring 19 can be inserted into the through hole of the countersunk through hole structure of the panel 1. The side walls of the lower positioning sleeve 15 and the convex ring 19 thereon are provided with an escape notch 20 for escaping the clamping member 3, and the clamping member 3 can be inserted into the clamping groove 4 on the panel 1 through the escape notch 20. The convex ring 19 on the lower positioning sleeve 15 separates the base 2 from the panel 1 to prevent the sound of metal friction during rotation, thereby forming a silent effect.

[0046] The slots 4 are arranged on the inner side wall of the through hole 10 of the panel 1, and the center angle of the arc path of the arrangement of the slots 4 is 90°. The panel 1 can only rotate within a range of 90°, preventing the risk of the display falling off due to excessive rotation of the panel 1. In addition, the center angle of the arc path of the arrangement of the slots 4 can also be 180° or 360°, which can be designed according to design requirements.

Claims

1. A panel rotation adjustment mechanism for a light display stand, characterized in that: It comprises a panel (1), a base (2), a clamp (3) and a clamp resetting elastic member (6), wherein the panel is rotatably mounted on the base; The panel is provided with a plurality of slots (4) arranged at intervals along an arc-shaped path, and the base is provided with at least one clamping member capable of sliding a set distance along the radial direction of the base; Alternatively, the base is provided with a plurality of slots arranged at intervals along an arc-shaped path, and the panel is provided with at least one clamping member capable of sliding a set distance along the radial direction of the panel; The arc-shaped path of the arrangement of the card slots is concentric with the rotating axis of the panel and the base. The card member can be inserted into or exit a card slot opposite it by reciprocating sliding. The card member contacts the two side walls of the card slot along the rotation direction of the panel through the inclined surface. The card member reset elastic member can provide the card member with an elastic retaining force in the direction of the card slot, thereby allowing the card member to remain in a locked state inserted in the card slot when not subject to external force.

2. The panel rotation adjustment mechanism of the lightweight display stand according to claim 1, characterized in that: The clamping groove on the panel or the base is a V-shaped groove, and one end of the clamping piece forms a clamping point (5) of a triangular structure matching the clamping groove.

3. The panel rotation adjustment mechanism of the light display stand according to claim 2 is characterized in that: The angle between the two side surfaces of the V-shaped slot and the center plane perpendicular to the bottom surface of the V-shaped slot is the inclination angle of the two side surfaces of the slot. The inclination angles of the two side surfaces of the V-shaped slot are different, so that the torque value when the panel rotates upward to force the card to exit the slot is smaller than the torque value when the panel rotates downward to force the card to exit the slot.

4. The panel rotation adjustment mechanism of the lightweight display stand according to claim 1, characterized in that: The structure of the card sliding a set distance on the base or panel is as follows: the base or panel is provided with a T-shaped slide groove (7) extending radially along its rotation axis and with a width at one end smaller than the width at the other end; the card is a T-shaped structure with a width at one end smaller than the width at the other end; the card can be slidably inserted into the T-shaped slide groove; the step surface between the two ends of the card is stopped on the step surface between the two ends of the T-shaped slide groove; one end of the card can extend outward of the end with a smaller width of the T-shaped slide groove to a set distance; the other end of the card is formed with a groove structure (8) or a guide protrusion or an extrusion plane; one end of the card reset elastic member is inserted into the groove structure at the other end of the base or panel or is sleeved on the outside of the guide protrusion or is in close contact with the surface of the extrusion plane; the other end of the card reset elastic member is tightly against the bottom surface of the other end of the T-shaped slide groove.

5. The panel rotation adjustment mechanism of the lightweight display stand according to claim 4, characterized in that: The panel or base is symmetrically provided with two groups of slots arranged at intervals along a circular arc path, and the base or panel is symmetrically provided with two T-shaped slide grooves. The two clips can be slidably inserted in the two T-shaped slide grooves respectively, and one end of the two clips can extend out of one end of the two T-shaped slide grooves respectively and be correspondingly plugged into any one of the two groups of slots.

6. The panel rotation adjustment mechanism of the lightweight display stand according to claim 5, characterized in that: The other end of the card is a U-shaped structure, and a groove structure is formed between the inside of the U-shaped structure and the inner side wall of the T-shaped slide groove to accommodate one end of the card reset elastic member. The length of one side wall of the U-shaped structure at the other end of the card is greater than the length of the other side wall. The other ends of the two T-shaped slide grooves are connected by a channel (9), and one side of the U-shaped structure at the other end of the card can extend into the channel and slide along the channel.

7. The panel rotation adjustment mechanism of the lightweight display stand according to claim 1, characterized in that: The structure of the panel rotatably installed on the base is as follows: a through hole (10) is provided at the center of the panel, the base includes a base body (11) and a circular boss (12), the circular boss is coaxially fixed to one axial end of the base body, and the diameter of the circular boss is smaller than the diameter of the base body. The circular boss can be rotatably inserted into the through hole of the panel, and is also provided with a clamping plate (13), an upper positioning sleeve (14), a lower positioning sleeve (15) and a connecting screw (16), the clamping plate and the circular boss of the base are fixedly connected by connecting screws, the upper positioning sleeve and the lower positioning sleeve are both sleeved on the outer side of the circumference of the circular boss of the base, the upper positioning sleeve is tightly clamped between the clamping plate and one side of the panel, and the lower positioning sleeve is tightly clamped between the base body and the other side of the panel, the clamping groove is formed on the inner side wall of the through hole of the panel, and the clamp is installed on the circular boss of the base.

8. The panel rotation adjustment mechanism of the lightweight display stand according to claim 7, characterized in that: The through hole in the center of the panel is a countersunk through hole structure, the base body can be rotatably inserted in the countersunk of the countersunk through hole structure, the circular boss of the base can be rotatably inserted in the through hole of the countersunk through hole structure, the base body is provided with a positioning groove (17) on one end surface facing away from the panel and facing the connecting protrusion on the display bracket, and the base body is provided with a countersunk hole (18) on the bottom surface of the positioning groove and facing the threaded hole on the connecting protrusion of the display bracket.

9. The panel rotation adjustment mechanism of the lightweight display stand according to claim 7, characterized in that: A convex ring (19) is formed on the end surface of one axial end of the lower positioning sleeve, and the convex ring can be inserted into the through hole of the countersunk through hole structure of the panel. The lower positioning sleeve and the convex ring side wall thereon are provided with an avoidance notch (20) for avoiding the card member, and the card member can be inserted into the card slot on the panel through the avoidance notch.

10. The panel rotation adjustment mechanism of the light display stand according to claim 7, characterized in that: The card slots are arranged on the inner side wall of the through hole of the panel, and the central angle of the arc path in which the card slots are arranged is 90°.

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