CN113154218A - Display support - Google Patents

Display support Download PDF

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Publication number
CN113154218A
CN113154218A CN202110280349.5A CN202110280349A CN113154218A CN 113154218 A CN113154218 A CN 113154218A CN 202110280349 A CN202110280349 A CN 202110280349A CN 113154218 A CN113154218 A CN 113154218A
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CN
China
Prior art keywords
ball
base
gear
support pad
assembly
Prior art date
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Granted
Application number
CN202110280349.5A
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Chinese (zh)
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CN113154218B (en
Inventor
夏雨婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Shidongkou Second Power Plant of Huaneng Power International Inc
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Shanghai Shidongkou Second Power Plant of Huaneng Power International Inc
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Application filed by Shanghai Shidongkou Second Power Plant of Huaneng Power International Inc filed Critical Shanghai Shidongkou Second Power Plant of Huaneng Power International Inc
Priority to CN202110280349.5A priority Critical patent/CN113154218B/en
Publication of CN113154218A publication Critical patent/CN113154218A/en
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Publication of CN113154218B publication Critical patent/CN113154218B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20Undercarriages with or without wheels
    • F16M11/24Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043Allowing translations
    • F16M11/046Allowing translations adapted to upward-downward translation movement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention relates to a display bracket, which comprises a stand column, a base, a telescopic assembly and an operation part, wherein the inside of the stand column is hollow; the base is connected with the tail end of the upright post, and a ball assembly and a support pad are arranged in an inner cavity of the base; the telescopic assembly is arranged in the upright column and fixedly connected with the ball assembly or the support pad, and correspondingly, the support pad or the ball assembly is fixed on the base; the operation part is fixedly connected with the upright post and movably connected with the telescopic assembly so as to drive the telescopic assembly to move up and down. The display bracket provided by the invention is stable in support, convenient to move and safe in moving process.

Description

Display support
Technical Field
The invention relates to a display accessory, in particular to a display bracket.
Background
Displays are widely used in various fields as an information output apparatus. As an essential accessory of the display, the display stand has various structures according to the application and installation place of the display. For a large-screen display, due to the large volume and heavy weight of the display, one important function of the display bracket is to provide safe support, and then the display bracket is convenient to use and attractive in appearance, so that most displays adopt a fixed support mode. For example, fixed to a wall using brackets, or supported to the ground using floor stands. To take care of the aesthetic appearance, display stands have in the prior art either included a thick upright fixed to a larger base or two thinner uprights fixed to a common or respective base. The above structure is stable in support but not easy to move. And in other display supports, in order to move the position conveniently, universal rollers are arranged on the base and are always supported by the rollers no matter whether the display supports move or not. The roller has a large volume, so that the gravity center of the whole structure is high, and the stability is poor.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the display bracket, which adopts different structures as supports when in moving and fixing positions, thereby facilitating the movement and improving the stability of the support.
In order to solve the above technical problem, the present invention provides a display stand, which includes a column, a base, a telescopic assembly and an operation portion, wherein the interior of the column is hollow; the base is connected with the tail end of the upright post, and a ball assembly and a support pad are arranged in an inner cavity of the base; the telescopic assembly is arranged in the upright column and fixedly connected with the ball assembly or the support pad, and correspondingly, the support pad or the ball assembly is fixed on the base; the operating part comprises a driving part, a connecting sleeve and a hand wheel, wherein the driving part is movably connected with the telescopic assembly; the outer surface of the connecting sleeve is fixed with the upright post, and the first end of the connecting sleeve is fixedly connected with the driving part; the wheel shaft of the hand wheel is arranged at the second end of the connecting sleeve; the wheel shaft is provided with a positioning lug, the second end of the sleeve is provided with a section of sliding groove in the circumferential direction, a stop block is arranged in the sliding groove, the sliding groove is divided into two positioning grooves with the same size, the positioning grooves are matched with the positioning lug, and the height of the stop block is smaller than the width of the sliding groove.
Preferably, the telescopic assembly comprises a lead screw and a nut block, and the nut block is in threaded connection with the lead screw; the nut block is fixedly connected with the ball assembly or the support pad through a connecting piece; correspondingly, the driving part comprises a first gear and a screw rod, and the first gear is coaxially connected with one end of the screw rod so as to drive the screw rod to rotate; a section of thread is arranged on the screw rod, and the thread is meshed with the first gear; one end of the screw rod is sleeved and fixed in the connecting sleeve.
Preferably, the telescopic assembly is a column body with a rack section, and the tail end of the column body is fixedly connected with the ball assembly or the support pad through a connecting piece; correspondingly, the drive part comprises a second gear wheel, which meshes with the rack section, the axle of which is fixed in the connecting sleeve.
Preferably, the ball assembly comprises a ball track and a plurality of balls, the ball track is fixed with the base along the periphery of the base; the ball is arranged in the ball track, and the ball protrudes out of the ball track surface; the support pad is arranged in the inner space of the base and is connected with the telescopic component; when the telescopic assembly is contracted, the support pad is accommodated in the inner space of the base, and the ball is in contact with the supporting surface; when the telescopic assembly extends, the support pad extends out of the inner space of the base to be in contact with the supporting surface.
Preferably, the ball assembly comprises a ball frame, a plurality of ball tracks and a plurality of balls, the ball frame is arranged in the inner space of the base and is connected with the telescopic assembly; the plurality of ball tracks are fixed on the ball frame at intervals; the plurality of balls are arranged in the ball track, and the balls protrude out of the ball track surface; the support pad is the bottom surface of the base, and a plurality of strip holes corresponding to the ball tracks are formed in the support pad; when the telescopic assembly is contracted, the ball frame drives the ball track to be accommodated in the inner space of the base, and the bottom surface of the base is in contact with the supporting surface; when the telescopic assembly extends, the ball frame drives the ball track to extend out of the strip hole corresponding to the bottom surface of the base, and the ball is in contact with the supporting surface.
Preferably, the number of the upright columns and the corresponding bases is two, the operating part further comprises linkage parts, and the linkage parts are respectively matched with first/second gears in the two upright columns to synchronously drive the telescopic components to move up and down.
Preferably, the linkage part is a third gear and a second rack, wherein the second rack is respectively matched with the first/second gears in the two columns, and the third gear is fixedly connected with the connecting sleeve.
The invention is supported by the supporting pad with larger area when the display is at the fixed position, when the display needs to move, the operation part, such as a hand wheel, simply pulls, rotates and presses three actions, namely the ball support can be changed, so that the display can be easily moved, and when the display reaches the preset position, the supporting pad support is changed, therefore, the support is stable, the movement is convenient, and the moving process is safe.
Drawings
Preferred embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a display stand configuration according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the internal structure of a column according to an embodiment of the invention;
FIG. 3 is a schematic sketch taken along A-A in FIG. 2;
FIGS. 4 and 5 are exploded schematic views of part A of FIG. 3, respectively;
FIG. 6 is a schematic, fragmentary, diagrammatic view of a retraction assembly within a column according to another embodiment of the present invention;
FIG. 7 is a schematic, partially schematic illustration of the retraction assembly within a column from another view of FIG. 6;
FIG. 8 is a simplified schematic illustration of a base structure according to an embodiment of the invention;
FIG. 9 is a schematic diagram of a support pad extended beyond the base of the base for contact with the ground according to one embodiment of the invention;
FIG. 10 is a schematic view of the interior of the base with the ball in contact with the ground when the support pad is stowed in accordance with one embodiment of the present invention;
FIG. 11 is a schematic, diagrammatic illustration of a base structure according to another embodiment of the present invention;
FIG. 12 is a schematic, diagrammatic illustration of a base structure according to yet another embodiment of the present invention;
FIG. 13 is a schematic view of the interior of the base with the ball cage stowed and the underside of the base in contact with the ground in accordance with one embodiment of the invention;
FIG. 14 is a schematic diagram of a ball bearing in contact with the ground extending beyond the base of the base according to one embodiment of the invention;
FIG. 15 is a simplified schematic illustration of a display stand configuration according to another embodiment of the present invention;
FIG. 16 is a simplified schematic illustration of a display stand configuration according to yet another embodiment of the present invention;
FIG. 17 is a schematic view of the connection of the linkage section, the handle section and the telescoping assemblies in the two uprights according to one embodiment of the invention; and
fig. 18 is a schematic diagram of the interlocking part in another view angle of fig. 17.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following detailed description, reference is made to the accompanying drawings that form a part hereof and in which is shown by way of illustration specific embodiments of the application. In the drawings, like numerals describe substantially similar components throughout the different views. Various specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to practice the teachings of the present application. It is to be understood that other embodiments may be utilized and structural, logical or electrical changes may be made to the embodiments of the present application.
FIG. 1 is a schematic diagram of a display stand configuration according to an embodiment of the present invention. In this embodiment, the display bracket includes a pillar 100, a base 200, an operation portion 300, and a hanger 400, wherein the bottom of the pillar 100 is fixedly connected to the base 200, the top of the pillar 100 is connected to the hanger 400, and the hanger 400 is connected to the display 500 through a connector. In this embodiment, the interior of the column 100 is hollow; a telescopic assembly (see fig. 2) is provided therein, and the operation part 300 is fixedly connected to the column 100 and movably connected to the telescopic assembly to drive the telescopic assembly to move up and down. The ball assembly and the support pad are arranged in the cavity inside the base 200, and the telescopic assembly is connected with the support pad. The hanger 400 according to the present invention is not limited thereto, and may have various structures in the related art.
Referring to fig. 2, a schematic diagram of the internal structure of the column 100 is shown. Referring to fig. 3, fig. 3 is a schematic sketch taken along a-a in fig. 2. In this embodiment, the telescopic assembly includes a lead screw 601 and a nut block 602, and the nut block 602 is sleeved on the lead screw 601 and is in threaded connection with the lead screw 601. When the lead screw 601 is rotated in place, the nut block 602 moves down or up the thread. The nut block 602 is fixedly connected with a support pad in the base 200 through a connecting piece 603. The top end of the lead screw 601 is coaxially connected with the first gear 301, and the first gear 301 is meshed with the screw 302. Referring to fig. 3, one end of the screw 302 is fixed to a connecting sleeve 303, and the other end of the connecting sleeve 303 is fixed to an axle 304 of a handwheel 305. When the handwheel 305 is rotated, the wheel shaft 304 and the connecting sleeve 303 drive the screw 302 to rotate, the screw 302 is meshed with the first gear 301, the rotation of the screw 302 drives the first gear 301 to rotate, and the first gear 301 is coaxially connected with the screw 601, so as to drive the screw 601 to rotate. The rotation of the screw 601 moves the nut block 602 sleeved thereon up or down, thereby driving the support pad 210 to ascend or descend in the inner chamber of the base 200.
Fig. 4 and 5 are exploded views of a portion a of fig. 3. The axle 304 is provided with a positioning protrusion 306, the second end of the sleeve is provided with a section of sliding slot 307 in the circumferential direction, a stop block 308 is arranged in the sliding slot, the height of the stop block 308 is smaller than the width of the sliding slot, and the sliding slot 307 is divided into two positioning grooves 309 with equal size, as shown by the dotted outline in the figure, which are matched with the positioning protrusion 306. When the handwheel 305 is not operated, the positioning lug 306 on the wheel shaft 304 is positioned in one of the positioning grooves 309, and the handwheel 305 cannot rotate. When the hand wheel 305 needs to be rotated, the hand wheel is pulled out first, so that the positioning lug 306 is separated from the positioning groove 309, and enters the upper space of the sliding groove 307 in the current direction shown in the figure, then the hand wheel is rotated, the positioning lug 306 slides from one end to the other end in the upper space of the sliding groove 307, the hand wheel is pressed downwards, and the positioning lug 306 is embedded into the other positioning groove 309'. The positioning structure determines the up-and-down moving distance of the support pad in the base, and the up-and-down moving distance of the support pad can be satisfied by setting the distance between the two positioning grooves 309.
Fig. 6-7 are diagrammatic, schematic views of a telescoping assembly within a column according to another embodiment of the invention. In this embodiment, the telescoping assembly is a rod having a section of rack 312, the lower end of which is connected to the support pad 210. The rack 312 is engaged with the second gear 311, the second gear 311 is fixed to the connection sleeve 303, and the other end of the connection sleeve 303 is fixed to the wheel shaft 304 of the handwheel 305. The connection structure of the connection sleeve 303, the wheel shaft 304 and the handwheel 305 is shown in fig. 4-5, and will not be described herein. When the handwheel 305 rotates, the wheel shaft 304 and the connecting sleeve 303 are driven to rotate, and further the second gear 311 is driven to rotate, through the meshing relationship, the rack 312 is driven to move upwards or downwards by the rotation of the second gear 311, so that the support pad 210 is driven to be upwards accommodated in the base 200 and is supported by the balls 222 on the ground, or downwards extends out of the base 200 and is supported by the support pad 210 on the ground.
Fig. 8-10 are schematic illustrations of a base structure according to one embodiment of the invention. In this embodiment, the base 200 is a structure having an inner space, and the outer casing 201 can be fixedly connected with the column body of the upright 100, such as welded, riveted, and integrally formed. In the present embodiment, the ball assembly 220 includes a ball track 221 fixed to the base 200 along a periphery thereof; a ball 222 is disposed within the ball track, the ball 222 protruding from the ball track surface. The support pad 210 is disposed in the inner space of the base 200 and connected to a telescopic assembly, such as a connector 603 connected to a nut block 602 in fig. 2.
When the monitor is in a fixed position and does not need to be moved, the support pad 210 extends out of the bottom of the base 200 to contact the ground, as shown in fig. 9. When the display needs to be moved, the hand wheel 305 is pulled out and rotated, the hand wheel 305 drives the wheel shaft 304, the connecting sleeve 303 and the screw 302 to rotate, the screw 302 is meshed with the first gear 301, the rotation of the screw 302 drives the first gear 301 to rotate, and the first gear 301 is coaxially connected with the lead screw 601, so that the lead screw 601 is driven to rotate. The rotation of the screw 601 moves the nut block 602 sleeved thereon upward, thereby driving the support pad 210 to rise in the inner chamber of the base 200, the support pad 210 is accommodated in the base 200, and the balls 222 along the periphery of the base 200 contact the ground. When the hand wheel 305 is rotated to be immobile, the hand wheel is pressed downwards to lock the hand wheel, at this time, the screw 302, the first gear 301 and the screw 601 stop rotating, and the support pad 210 stops rising, as shown in fig. 10.
The base shown in fig. 8-10 is circular and the ball tracks 221 are circular tracks along the circumference of the base 200, although the base may also be polygonal in shape, such as rectangular in fig. 11, or have various irregular shapes with aesthetic designs. The ball tracks 221 can be changed according to the shape of the base, as shown in fig. 11, two sets of ball tracks 221 are disposed along the long side of the rectangular base, the slide rail 211 for the support pad 210 to move up and down is disposed on the short side of the rectangular base, and the support pad 210 and the slide rail 211 can be further provided with balls to reduce sliding friction.
Fig. 12-14 are schematic views of a base structure according to another embodiment of the invention. In this embodiment, the ball assembly in the base 200 includes a multi-segment ball track 223 that houses a ball 222. The ball tracks 224 are circumferentially fixed to the ball frame 223 at intervals. The ball frame 223 is disposed in the inner space of the base 200 and is connected to a telescopic assembly, such as a connector 603 connected to a nut block 602 in fig. 2. The support pad 210 in this embodiment is a bottom surface of the base, and has a plurality of bar holes 212 corresponding to the ball tracks 224, such that the balls 222 in the ball tracks 224 are exposed from the bar holes 212.
When the monitor is in a fixed position and does not need to be moved, the bottom surface of the base 200, i.e., the support pad 210, is in contact with the ground, as shown in fig. 13. When the display needs to be moved, the hand wheel 305 is pulled out and rotated, the hand wheel 305 drives the wheel shaft 304, the connecting sleeve 303 and the screw 302 to rotate, the screw 302 drives the first gear 301 to rotate, and the first gear 301 drives the lead screw 601 to rotate. The rotation of the screw 601 moves the nut block 602 sleeved thereon upward, thereby driving the ball rack 223 connected therewith to move downward, so that the balls 222 or the ball tracks 224 extend from the bar holes 212 on the bottom surface to land. Preferably, the ball cage 223 is disposed in the slide rail 225 such that the ball cage 223 slides up or down the slide rail 225. When the hand wheel 305 is rotated to be immobile, the hand wheel is pressed downwards to lock the hand wheel, at this time, the screw 302, the first gear 301 and the lead screw 601 stop rotating, and the ball frame 223 stops descending, as shown in fig. 14.
In the above embodiment, the monitor stand has only one upright, but two uprights may be provided, as shown in fig. 15, each having one operation portion 300. As shown in fig. 16, the two columns may share one operation unit 300, thereby achieving synchronous elevation control. The operation portion comprises a connecting portion, and the connecting portion is matched with the telescopic assemblies in the two stand columns to synchronously control the lifting or descending of the stand columns. The interlocking section will be described by taking the telescopic assembly in fig. 2 and 3 as an example. As shown in fig. 17-18, there is a schematic view of a linkage section in combination with an operating section and telescoping assemblies in two uprights. The linkage part comprises a third gear 601 and a second rack 602, which are fixed with the connecting sleeve 303 through a shaft, and the connecting sleeve 303 is fixed with the hand wheel 305 through a wheel shaft. The third rack 602 is respectively engaged with the upper and lower sides of the rack, and the annular two ends of the second rack 602 are respectively engaged with the first gear 301. When the handwheel 305 is rotated, the third gear 601 is driven to rotate, and the third gear 601 drives the two first gears 301 to rotate simultaneously through the second rack 602, so as to drive the support pads or the balls in the base to ascend or descend.
For the telescopic assemblies shown in fig. 6 or 7, the synchronous lifting and descending of the telescopic assemblies in the two upright posts can be realized by matching the operation part through a gear and a rack. The principle structure is similar to that shown in fig. 17-18, and will not be described again. In addition, the linking part in this embodiment can also adopt a belt and a belt pulley, and the linking effect is similar to that of a gear and a rack, so the description is omitted. In order to clearly represent the various key structures, the transverse tubular body 101 comprising the upright and the cladding third gear 601 and second rack 602 is omitted in fig. 17 and 18. The connecting sleeve is fixed to the transverse body 101 and provides support for the various structures.
The invention is supported by the supporting pad with larger area when the display is at the fixed position, when the display needs to move, the three actions of simple pulling, rotating and pressing can be changed into the ball landing through the operation part, such as the hand wheel, so that the display can be easily moved, and when the display reaches the preset position, the support is changed into the supporting pad support, therefore, the support is stable, the movement is convenient, and the moving process is safe.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention, and therefore, all equivalent technical solutions should fall within the scope of the present invention.

Claims (7)

1. A display stand, comprising:
the inner part of the upright post is hollow;
the base is connected with the tail end of the upright post, and a ball assembly and a support pad are arranged in an inner cavity of the base;
the telescopic assembly is arranged in the upright column and is fixedly connected with the ball bearing assembly or the support pad, and correspondingly, the support pad or the ball bearing assembly is fixed with the base; and
an operation portion including:
the driving part is movably connected with the telescopic assembly;
the outer surface of the connecting sleeve is fixedly connected with the upright post, and the first end of the connecting sleeve is fixedly connected with the driving part; and
the wheel shaft of the hand wheel is arranged at the second end of the connecting sleeve;
the hand wheel shaft is provided with a positioning lug, the second end of the connecting sleeve is provided with a section of sliding groove in the circumferential direction, a stop block is arranged in the sliding groove, the sliding groove is divided into two positioning grooves with the same size, the positioning grooves are matched with the positioning lug, and the height of the stop block is smaller than the width of the sliding groove.
2. The display stand of claim 1, wherein the telescoping assembly comprises:
a lead screw; and
the nut block is in threaded connection with the lead screw; the nut block is fixedly connected with the ball assembly or the support pad through a connecting piece;
correspondingly, the driving part comprises:
the first gear is coaxially connected with one end of the screw rod to drive the screw rod to rotate; and
and the screw rod is provided with a section of thread, the thread is meshed with the first gear, and one end of the screw rod is sleeved and fixed at the first end of the connecting sleeve.
3. The monitor support according to claim 1, wherein the telescopic assembly is a column having a rack section, and a terminal end of the column is fixedly connected with the ball assembly or the support pad through a connector;
correspondingly, the driving part comprises a second gear, the second gear is meshed with the rack section, and an axle of the second gear is fixed at the first end of the connecting sleeve.
4. The display stand of claim 1, wherein the rollerball assembly comprises:
a ball track fixed to the base along a periphery of the base; and
a plurality of balls disposed in the ball track, the balls protruding from the ball track surface;
the support pad is arranged in the inner space of the base and is connected with the telescopic component; when the telescopic assembly is contracted, the support pad ascends and is accommodated in the inner space of the base, and the ball is in contact with the supporting surface; when the telescopic assembly extends, the support pad extends out of the inner space of the base to be in contact with the supporting surface.
5. The display stand of claim 1, wherein the rollerball assembly comprises:
the ball frame is arranged in the inner space of the base and is connected with the telescopic component;
a plurality of ball tracks fixed to the ball frame at intervals; and
a plurality of balls disposed in the ball track, the balls protruding from the ball track surface;
the support pad is the bottom surface of the base, and a plurality of strip holes corresponding to the ball tracks are formed in the support pad; when the telescopic assembly is contracted, the ball frame drives the ball track to be accommodated in the inner space of the base, and the bottom surface of the base is in contact with the supporting surface; when the telescopic assembly extends, the ball frame drives the ball track to extend out of the strip hole corresponding to the bottom surface of the base, and the ball is in contact with the supporting surface.
6. The display bracket of claim 2 or 3, wherein the number of the upright posts and the corresponding bases is two, and the operation portion further comprises a linkage portion, and the linkage portion is respectively matched with the first gear or the second gear in the two upright posts to synchronously drive the telescopic assembly to move up and down.
7. The monitor support according to claim 6, wherein the linkage part is a third gear and a second rack, wherein the second rack is respectively matched with the first gear or the second gear in the two columns, and the second gear is fixedly connected with the first end of the connecting sleeve.
CN202110280349.5A 2021-03-16 2021-03-16 Display support Active CN113154218B (en)

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CN117221496A (en) * 2023-11-09 2023-12-12 合肥湛达智能科技有限公司 Real-time road monitoring persuasion device

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CN117221496B (en) * 2023-11-09 2024-02-20 合肥湛达智能科技有限公司 Real-time road monitoring persuasion device

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