Portable household floor liquid crystal support

Abstract

The utility model relates to the field of liquid crystal supports, in particular to a portable household floor liquid crystal support which comprises a base plate of a circular structure, a plurality of universal wheels are evenly installed on the lower side of the base plate in the circumferential direction, the upper side of the base plate extends upwards to form a main rod, an extension pipe is arranged on the main rod, and the extension pipe is connected with the base plate. A locking sleeve for mounting and limiting the display screen is arranged on the extension tube; through the main rod, the extension pipe and the locking sleeve which are assembled together on the base plate, the liquid crystal support can be conveniently disassembled and assembled so as to solve the problem that the assembled liquid crystal support is difficult to move due to the fact that the size is too large, and the liquid crystal support can be conveniently disassembled and assembled by driving the limiting supporting blocks distributed on the base plate in the circumferential direction to deflect. And all the universal wheels on the lower side of the chassis are suspended, so that the effect of improving the stability of the device in use is achieved.

Description

Technical Field

[0001] The utility model relates to the field of liquid crystal brackets, and particularly relates to a portable household floor-standing liquid crystal bracket. Background Art

[0002] With the development of science and technology, liquid crystal displays have been applied to more industries. Household flat-panel TVs are usually hung on the wall or placed on the TV cabinet through brackets. However, traditional liquid crystal brackets usually need to be fixedly installed on the wall or at a specific position. The installation and disassembly processes are complex, time-consuming and laborious. Moreover, due to the fixed installation characteristics of the liquid crystal brackets, the mobility of traditional brackets is generally poor. Once installed, it is difficult for users to move them to other positions, which limits the flexibility of using the liquid crystal screen. Fixed liquid crystal brackets usually need to occupy a certain space and are difficult to apply in an environment with limited space.

[0003] Therefore, under the above-mentioned viewpoints, there is still room for improvement in the existing liquid crystal brackets. Summary of the Utility Model

[0004] In order to solve the above problems, the utility model provides a portable household floor-standing liquid crystal bracket, which includes a chassis arranged in a circular structure. A plurality of universal wheels are evenly installed circumferentially on the lower side of the chassis. A main rod extends upward from the upper side of the chassis. An extension tube is arranged on the main rod. A locking sleeve for installing and limiting the display screen is arranged on the extension tube.

[0005] The locking sleeve includes a limiting frame plate sleeved on the extension tube. An installation frame is connected to the limiting frame plate. A strip-shaped installation strip is inserted at the lower end of the limiting frame plate. The installation strip has the ability of flexible deformation and can be rotated and spliced into a circular structure to be sleeved on the extension tube. At least two limiting ear blocks are symmetrically connected to both ends of the installation strip in the length direction. A limiting screw is commonly threaded through the two limiting ear blocks. A limiting pad that abuts against the rotationally spliced installation strip is also connected to the lower end of the limiting frame plate. The limiting pad is arranged between the installation strip and the extension tube to increase the stability of the installation strip locked on the extension tube.

[0006] Preferably, the locking sleeve further includes at least two support plates distributed vertically in the middle of the installation strip. A connecting shaft is commonly penetrated between the two support plates. An installation block is sleeved on the connecting shaft. An installation frame plate in a U-shaped structure is sleeved on the installation block. A connecting frame plate is arranged on the vertical section of the installation frame plate. A plurality of extension strip plates are symmetrically connected to the connecting frame plate. A plurality of positioning holes for positioning and installing the liquid crystal screen are arranged on the connecting frame plate and the extension strip plates.

[0007] Preferably, an adjusting knob is sleeved on the limiting screw so as to rotate the limiting screw to lock the limiting frame plate on the extension tube.

[0008] Preferably, a guiding block with a trapezoidal vertical cross-section is installed on the chassis. An adjusting screw rod is threadedly inserted through the middle of the guiding block. A limiting sleeve is sleeved on the adjusting screw rod. A plurality of telescopic push plates are evenly connected to the outer side surface of the limiting sleeve in the circumferential direction. The telescopic push plates are allowed to telescopically slide in the horizontal direction. The lower end of the telescopic push plate is connected to a pushing frame driven by the guiding block. One end of the pushing frame away from the connected telescopic push plate is connected to a limiting support block. A rotating pin is inserted through the middle of the limiting support block, and the rotating pin is installed on the chassis through a mounting seat.

[0009] Preferably, the pushing frame includes a connecting rod arranged at the lower end of the telescopic section of the telescopic push plate. The lower end of the connecting rod is connected to a driven push bar that abuts against the guiding block. One end of the driven push bar away from the connected connecting rod is inserted into the limiting support block.

[0010] Preferably, a limiting block inserted on the guiding block is arranged at the lower end of the telescopic push plate. An adjusting spring is also connected between the limiting block and the guiding block.

[0011] Preferably, a section of limiting through groove is formed on the limiting support block, and a limiting pin connected to the driven push bar is inserted into the limiting through groove.

[0012] Preferably, a plurality of anti-slip lines are evenly formed at the lower end of the limiting support block to increase the friction between the limiting support block and the ground.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] First, after the universal wheels on the lower side of the chassis of the present utility model come into contact with the ground, they are pushed to roll, thereby driving the device to slide and shift on the ground, increasing the mobility of the device, so as to adjust the position of the liquid crystal screen when the liquid crystal screen is installed.

[0015] Second, through the main rod, extension tube and locking sleeve assembled on the chassis of the present utility model, the liquid crystal bracket can be conveniently disassembled and assembled to solve the problem that the assembled liquid crystal bracket is too large in volume and difficult to move.

[0016] Third, by driving a plurality of circumferentially distributed limiting support blocks on the assembled chassis to deflect, the height of the chassis is increased, and all the universal wheels on the lower side of the chassis are suspended, so as to improve the stability performance of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the drawings and embodiments.

[0018] Figure 1 is a structural schematic diagram of the present utility model.

[0019] Figure 2It is a schematic structural diagram of the locking sleeve of the present utility model.

[0020] Figure 3 It is a schematic structural diagram of the installation strip of the present utility model.

[0021] Figure 4 It is a schematic structural diagram of the guide block of the present utility model.

[0022] Figure 5 It is a schematic structural diagram of the push frame of the present utility model.

[0023] Figure 6 It is the present utility model Figure 5 An enlarged view of A in it.

[0024] Figure 7 It is a schematic structural diagram of the limit support block of the present utility model.

[0025] Figure 8 It is a schematic structural diagram of the double-headed screw of the present utility model.

[0026] Figure 9 It is a schematic structural diagram of the adjusting member of the present utility model.

[0027] Figure 10 It is the present utility model Figure 9 An enlarged view of B in it.

[0028] In the figure, 1, chassis; 10, universal wheel; 11, main rod; 12, extension tube; 2, locking sleeve; 20, limit frame plate; 21, installation strip; 22, limit ear block; 23, limit screw; 24, limit pad; 25, support plate; 250, connecting shaft; 251, installation block; 252, installation frame plate; 253, connecting frame plate; 254, extension strip plate; 26, adjusting knob; 3, guide block; 30, adjusting screw; 31, limit sleeve; 32, telescopic push plate; 33, push frame; 330, connecting rod; 331, driven push bar; 332, limit block; 333, adjusting spring; 334, limit through groove; 335, limit pin; 34, limit support block; 35, rotating pin; 36, mounting seat; 37, anti-slip pattern; 4, adjusting member; 40, double-headed screw; 41, limit clamping block; 42, limit sleeve tube; 43, sliding push rod; 44, connecting and dialing plate; 45, pushing and dialing plate; 46, pressing spring; 47, arc clamping block; 48, limit clamping groove; 49, suction cup. Detailed implementation manners

[0029] The following will Figure 1 be combined with the attached Figure 10 drawings to describe the embodiments of the present utility model in detail. However, the present utility model can be implemented in many different ways defined and covered by the claims.

[0030] The embodiment of the present application discloses a portable household floor-mounted LCD bracket. It should be noted that this portable household floor-mounted LCD bracket is mainly applied in the process of limiting and installing the LCD display screen, achieving the effect of portable installation of the display screen in terms of technical effects; especially after the LCD display screen is limited and installed, its stability performance after installation is increased; further, this portable household floor-mounted LCD bracket also lifts the overall height through a number of limiting support blocks arranged at the bottom of the bracket, so that the universal wheels at the bottom are suspended, avoiding the problem that the bracket is displaced due to external interference after moving to the predetermined position.

[0031] Embodiment 1: Refer to Figure 1 As shown, a portable household floor-mounted LCD bracket includes a chassis 1, universal wheels 10, a main rod 11, an extension tube 12 and a locking sleeve 2. The chassis 1 is arranged in a circular structure. A number of universal wheels 10 are evenly installed circumferentially on the lower side of the chassis 1. A main rod 11 extends upward from the upper side of the chassis 1. An extension tube 12 is arranged on the main rod 11, and a locking sleeve 2 for limiting and installing the display screen is arranged on the extension tube 12.

[0032] When in use, after the locking sleeve 2 is limited and installed on the extension tube 12, the LCD screen is limited and installed through the locking sleeve 2, and then the chassis 1 is pushed to move. When the universal wheels 10 on the lower side of the chassis 1 contact the ground, they are pushed to roll, thereby driving the device to slide and shift on the ground, increasing the mobility of the device.

[0033] Refer to Figure 2 and Figure 3 As shown, that is, the locking sleeve 2 for limiting and installing the display screen; specifically, the locking sleeve 2 includes a limiting frame plate 20, an installation strip 21, limiting ear blocks 22 and a limiting screw 23. A limiting frame plate 20 is sleeved on the extension tube 12. The lower end of the limiting frame plate 20 is slidably inserted with an installation strip 21 arranged in a long strip structure. The installation strip 21 has the ability of flexible deformation so as to be rotationally spliced into a circular structure to be sleeved on the extension tube 12. At least two limiting ear blocks 22 are symmetrically connected to both ends of the installation strip 21 in the length direction, and a limiting screw 23 is commonly threaded through the two limiting ear blocks 22.

[0034] When in use, after the installation strip 21 is wound around the outer side of the extension tube 12, it is inserted into the limiting frame plate 20, and then the two limiting ear blocks 22 on the installation strip 21 are moved towards each other. After the installation strip 21 is tightly attached to the extension tube 12, the limiting screw 23 is driven to rotate and penetrate through the two limiting ear blocks 22, achieving the effect of locking and limiting the installation strip 21 and the limiting frame plate 20 on the extension tube 12.

[0035] Furthermore, refer to Figure 2 and Figure 3As shown, a limiting pad 24 is further connected to the lower end of the limiting frame plate 20 and abuts against the installed strip 21 after rotational splicing. The limiting pad 24 is arranged between the installed strip 21 and the extension pipe 12 to increase the stability of the installed strip 21 locked on the extension pipe 12. During use, after the limiting frame plate 20 drives the limiting pad 24 to sleeved on the extension pipe 12, the installed strip 21 is wound to form a circular structure, and then by rotating the limiting screw 23, the limiting ear blocks 22 slide towards each other through the threads on the limiting screw 23, so as to realize the effect of tightening the installed strip 21, making the installed strip 21 pressed on the limiting pad 24, and realizing the effect of locking and installing the limiting frame plate 20.

[0036] Refer to Figure 2 and Figure 3 As shown, the locking sleeve 2 further includes at least two support plates 25 distributed vertically in the middle of the installed strip 21. A connecting shaft 250 is commonly passed through between the two support plates 25. An installation block 251 is rotatably sleeved on the connecting shaft 250. An installation frame plate 252 with a U-shaped structure is rotatably sleeved on the installation block 251. A locking bolt is commonly threaded through the installation block 251 and the installation frame plate 252. A connecting frame plate 253 is arranged on the vertical section of the installation frame plate 252. A number of extending strip plates 254 are symmetrically connected to the connecting frame plate 253. A number of positioning holes for positioning and installing the liquid crystal screen are provided on the connecting frame plate 253 and the extending strip plates 254. The liquid crystal display screen is positioned and installed by inserting screws into the positioning holes.

[0037] Refer to Figure 2 and Figure 3 As shown, an adjusting knob 26 is sleeved on the limiting screw 23 to facilitate rotating the limiting screw 23 to lock the limiting frame plate 20 on the extension pipe 12.

[0038] Refer to Figures 4 to 6 As shown, a guiding block 3 with a trapezoidal vertical section is installed on the chassis 1. In this embodiment, the diameter of the upper end of the guiding block 3 is larger than that of its lower end. An adjusting screw 30 is threaded through the middle of the guiding block 3. A limiting sleeve 31 is sleeved on the adjusting screw 30. A number of telescopic push plates 32 are circumferentially and evenly connected to the outer side surface of the limiting sleeve 31. The telescopic push plates 32 are allowed to telescopically slide in the horizontal direction. The lower end of the telescopic push plate 32 is connected to a pushing frame 33 driven by the guiding of the guiding block 3. One end of the pushing frame 33 far from the connected telescopic push plate 32 is connected to a limiting support block 34. A rotating pin 35 is passed through the middle of the limiting support block 34. The rotating pin 35 is installed on the chassis 1 through a mounting seat 36.

[0039] During use, by driving the adjusting screw 30 to rotate, since the guiding block 3 is limit-mounted on the chassis 1, after the adjusting screw 30 rotates, it slides upward in the vertical direction through the threaded fit with the guiding block 3. The upward movement of the adjusting screw 30 drives the limit sleeve 31, the telescopic push plate 32 and the pushing frame 33 to move upward. The upward movement of the pushing frame 33 causes it to move upward along the inclined surface of the guiding block 3 and at the same time drives the connected telescopic push plate 32 to extend away from the adjusting screw 30. The movement of the pushing frame 33 also pushes the connected limit support block 34 to move. The limit support block 34 moves and deflects around the connected rotating pin 35. After all the limit support blocks 34 rotate and deflect, the lower ends of the limit support blocks 34 contact the ground, and as the limit support blocks 34 deflect, they gradually push the entire chassis 1 upward. The upward movement of the chassis 1 drives all the universal wheels 10 to move upward, so that the universal wheels 10 are in a suspended state, so as to avoid the problem that after driving the device to drive the limited-mounted display screen to a predetermined position, it is still interfered by external forces and causes displacement.

[0040] Refer to Figures 4 to 6 As shown, the pushing frame 33 includes a connecting rod 330 provided at the lower end of the telescopic section of the telescopic push plate 32. The lower end of the connecting rod 330 is connected to a driven push bar 331 that abuts against the guiding block 3. One end of the driven push bar 331 away from the connected connecting rod 330 is inserted into the limit support block 34.

[0041] During use, after driving the limit sleeve 31 and the telescopic push plate 32 to move upward, the telescopic section of the telescopic push plate 32 drives the connected connecting rod 330 and the driven push bar 331 to move upward. During the upward movement of the driven push bar 331, it also slides away from the guiding block 3 along the inclined surface of the guiding block 3 at the same time, thereby driving the connected telescopic push plate 32 to be stretched. The movement of the driven push plate drives one end of the connected limit support block 34 to deflect and move, causing the limit support block 34 to deflect until its lower end rotates to the horizontal level of the ground. After the lower ends of all the limit support blocks 34 rotate to be flush with the ground, all the universal wheels 10 are in a suspended state, thus achieving the effect of restricting the position of the device.

[0042] Furthermore, refer to Figure 4As shown in the figure, a limit block 332 is provided at the lower end of the telescopic section of the telescopic push plate 32. After passing through the telescopic push plate 32, the limit block 332 is inserted into the guide block 3. An adjusting spring 333 is also connected between the limit block 332 and the guide block 3. During use, when the telescopic section of the telescopic push plate 32 is driven to slide in the direction away from the limit sleeve 31, the telescopic section of the telescopic push plate 32 drives the connected limit block 332 to slide synchronously. The movement of the limit block 332 causes the connected adjusting spring 333 to be stretched under force. After the adjusting spring 333 is stretched, it needs to return to its normal extended state. Therefore, when the adjusting spring 333 needs to reset and contract, it drives the connected limit block 332 and the telescopic section of the telescopic push plate 32 to always have an elastic restoring force to slide in the direction close to the limit sleeve 31, so that the driven push bar 331 always abuts against the inclined surface of the guide block 3.

[0043] Referring to Figures 4 to 6 As shown in the figure, a limit through groove 334 is provided on the limit support block 34. A limit pin 335 connected to the driven push bar 331 is slidably inserted into the limit through groove 334. The rod diameter of the limit pin 335 is smaller than the distance between the two inner side walls of the limit through groove 334. During use, when the driven push bar 331 slides in the direction away from the limit sleeve 31, the driven push bar 331 pushes the upper end of the connected limit support block 34 to deflect in the direction away from the limit sleeve 31. During the deflection of the limit support block 34, the driven push bar 331 drives the connected limit pin 335 to slide in the limit through groove 334. With the relative movement of the limit support block 34 and the driven push bar 331, the driven push bar 331 and the limit pin 335 are gradually moved up to the upper side of the limit through groove 334. At this time, the limit support block 34 also rotates to be flush with the ground.

[0044] Furthermore, referring to Figure 7 As shown in the figure, a plurality of anti-slip lines 37 are evenly provided at the lower end of the limit support block 34 to increase the friction between the limit support block 34 and the ground and improve the stability of the device during use.

[0045] Embodiment 2: Referring to Figures 8 to 10As shown, on the basis of the first embodiment, in order to further improve the portability and stability of the device, an adjusting member 4 is further provided on the main rod 11; specifically, the adjusting member 4 includes a double-headed screw 40, a limit block 41, a limit sleeve 42, a sliding push rod 43, a connecting dial 44, a pushing dial 45, a pressing spring 46, an arc-shaped block 47, a limit slot 48 and a suction cup 49. A double-headed screw 40 is jointly provided between the main rod 11 and the extension tube 12 to disassemble the main rod 11 and the extension tube 12. The main rod 11 and the chassis 1 are also fixed by bolt cooperation. The two ends of the double-headed screw 40 are symmetrically sleeved with limit blocks 41 in a threaded manner. The two limit blocks 41 are respectively inserted into the extension tube 12 and the installation cavity on the main rod 11. A sliding push rod 43 threadedly connected to the double-headed bolt is also connected in the installation cavity in a limited manner. The lower end of the sliding push rod 43 is slidably inserted with a sliding push rod 43. A connecting dial 44 passing through the installation cavity is provided on the sliding push rod 43. A pushing dial 45 for pushing the connecting dial 44 to slide is provided on the limit sleeve 31. The ends of the connecting dial 44 and the pushing dial 45 close to each other are arranged in an arc-shaped structure and both have the ability of elastic deformation. A pressing spring 46 is jointly connected between the sliding push rod 43 and the limit sleeve 42. An arc-shaped block 47 for limiting the sliding push rod 43 is also connected to the limit sleeve 42. A limit slot 48 adapted to the arc-shaped block 47 is opened on the sliding push rod 43. The lower end of the sliding push rod 43 passes through the main rod 11 and the chassis 1 and is connected by a bolt to a suction cup 49 located below the chassis 1.

[0046] During use, after driving the adjusting screw 30 to move upward, the upward movement of the adjustment drives the limit sleeve 31 and the pushing dial 45 to move upward. The upward movement of the pushing dial 45 pushes the contacting connecting dial 44 to move upward. The upward movement of the connecting dial 44 drives the sliding push rod 43 and the arc-shaped block 47 to move upward. The upward movement of the arc-shaped block 47 disengages from the limit slot 48. The upward movement of the sliding push rod 43 drives the pressing spring 46 at its upper end to be further compressed under force. At this time, since the arc-shaped slot is disengaged from the limit slot 48, under the pushing of the downward reset elastic force of the pressing spring 46, the sliding push rod 43 and the arc-shaped block 47 are driven to move downward. At the same time, elastic deformation occurs between the connecting dial 44 and the pushing dial 45, causing the connecting dial 44 to move downward along the arc surface of the pushing dial 45 and cross over the pushing dial 45. At this time, the pushing dial 45 no longer limits the connecting dial 44. Under the downward drive of the pressing spring 46, the arc-shaped block 47 accelerates and slides to the limit slot 48 and, driven by the pressing spring 46, crosses over the limit slot 48, causing the sliding push rod 43 to continue to move downward. The downward movement of the sliding push rod 43 drives the suction cup 49 at its lower end to move downward to contact the ground, and under the downward driving force of the pressing spring 46 at this time, the suction cup 49 is pressed to deform and exhaust the air therein, thereby adsorbing on the ground, achieving the effect of increasing the stability of the device during use.

[0047] When the liquid crystal screen needs to be shifted, only need to drive the adjusting screw rod 30 to rotate reversely and then move downward. The downward movement of the adjusting screw rod 30 drives the limiting sleeve 31, the telescopic push plate 32, the connecting rod 330 and the driven push bar 331 to move downward. The downward movement of the driven push bar 331 drives the limiting support block 34 to deflect along the inclined surface of the guiding block 3 towards the direction close to the guiding block 3, so that the universal wheels 10 on the lower side of the chassis 1 are in contact with the ground again. After the limiting support block 34 deflects, the overall height of the chassis 1 decreases downward. The chassis 1 drives the main rod 11 to move downward, so that a relative movement is formed between the main rod 11 and the sliding push rod 43. The sliding push rod 43 moves upward in the installation cavity. After the connecting dial 44 on the sliding push rod 43 abuts against the pushing dial 45 on the limiting sleeve 31 again, both the connecting dial 44 and the pushing dial 45 generate elastic deformation, and then the connecting dial 44 moves upward along the arc surface of the pushing dial 45 to the upper side of the pushing dial 45, so that the pushing dial 45 limits the connecting dial 44 again. The upward movement of the connecting dial 44 drives the sliding push rod 43 to move upward and reset. At the same time, the downward movement of the main rod 11 drives the limiting sleeve 42 and the arc-shaped block 47 to move downward, so that the arc-shaped block 47 is inserted into the limiting slot 48 again, thereby realizing the effect of releasing the adsorption and recycling of the suction cup 49.

[0048] During operation: In the first step, by combining and installing the chassis 1, the main rod 11, the extension pipe 12 and the locking sleeve 2, the universal wheels 10 on the lower side of the chassis 1 are used to drive the bracket to move to a predetermined position, and then the liquid crystal screen is limited by the locking sleeve 2, so as to realize the effect of limiting and installing the liquid crystal screen.

[0049] In the second step: After the installation and shifting of the liquid crystal screen are completed, by driving the adjusting screw rod 30 to rotate, all the limiting support blocks 34 are driven to deflect by the rotation of the adjusting screw rod 30 to lift the height of the device, so that all the universal wheels 10 are in a suspended state, so as to avoid the device being displaced due to external force pushing.

[0050] In the third step: While driving the limiting support block 34 to deflect, the suction cup 49 on the lower side of the chassis 1 is also driven to move downward to contact the ground, so that the suction cup 49 adsorbs on the ground, increasing the stability of the device during use.

[0051] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0052] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A portable household floor-standing LCD bracket, comprising a chassis (1) arranged in a circular structure, characterized in that: A plurality of universal wheels (10) are evenly installed circumferentially on the lower side of the described chassis (1). A main rod (11) extends upward from the upper side of the chassis (1). An extension tube (12) is provided on the main rod (11). A locking sleeve (2) for mounting and limiting the display screen is provided on the extension tube (12), where: The described locking sleeve (2) includes a limiting frame plate (20) sleeved on the extension tube (12). An installation frame is connected to the limiting frame plate (20). An installation strip (21) in a long strip structure is inserted at the lower end of the limiting frame plate (20). The installation strip (21) has the ability of flexible deformation and is thus rotationally spliced into a circular structure to be sleeved on the extension tube (12). At least two limiting ear blocks (22) are symmetrically connected to both ends of the installation strip (21) in the length direction. A limiting screw (23) is commonly threaded through the two limiting ear blocks (22). A limiting pad (24) that abuts against the rotationally spliced installation strip (21) is also connected to the lower end of the limiting frame plate (20). The limiting pad (24) is arranged between the installation strip (21) and the extension tube (12) to increase the stability of the installation strip (21) locked on the extension tube (12).

2. The portable household floor-standing LCD bracket according to claim 1, wherein: The described locking sleeve (2) further includes at least two support plates (25) distributed vertically in the middle of the installation strip (21). A connecting shaft (250) is commonly penetrated between the two support plates (25). An installation block (251) is sleeved on the connecting shaft (250). An installation frame plate (252) in a U-shaped structure is sleeved on the installation block (251). A connecting frame plate (253) is provided on the vertical section of the installation frame plate (252). A plurality of extension strip plates (254) are symmetrically connected to the connecting frame plate (253). A plurality of positioning holes for positioning and installing the liquid crystal screen are provided on the connecting frame plate (253) and the extension strip plates (254).

3. A portable household floor-standing LCD bracket according to claim 1, wherein: An adjusting knob (26) is sleeved on the limiting screw (23) to rotate the limiting screw (23) to lock the limiting frame plate (20) on the extension tube (12).

4. A portable household floor-standing LCD bracket according to claim 1, characterized in that: A guiding block (3) with a trapezoidal vertical section is installed on the chassis (1). An adjusting screw (30) is threaded through the middle of the guiding block (3). A limiting sleeve (31) is sleeved on the adjusting screw (30). A plurality of telescopic push plates (32) are evenly connected to the outer side surface of the limiting sleeve (31) circumferentially. The telescopic push plates (32) are allowed to telescopically slide horizontally. A pushing frame (33) driven by the guiding of the guiding block (3) is connected to the lower end of the telescopic push plate (32). A limiting support block (34) is connected to the end of the pushing frame (33) far from the connected telescopic push plate (32). A rotating pin (35) is penetrated through the middle of the limiting support block (34). The rotating pin (35) is installed on the chassis (1) through a mounting seat (36).

5. A portable household floor-standing LCD bracket according to claim 4, characterized in that: The described pushing frame (33) includes a connecting rod (330) provided at the lower end of the telescopic section of the telescopic push plate (32). A driven push bar (331) that abuts against the guiding block (3) is connected to the lower end of the connecting rod (330). The end of the driven push bar (331) far from the connected connecting rod (330) is inserted into the limiting support block (34).

6. A portable household floor-standing LCD bracket according to claim 4, wherein: A limiting block (332) inserted on the guiding block (3) is arranged at the lower end of the telescopic push plate (32), and an adjusting spring (333) is further connected between the limiting block (332) and the guiding block (3).

7. A portable household floor-standing LCD bracket according to claim 1, characterized in that: A limiting through groove (334) is formed in the limiting support block (34), and a limiting pin (335) connected to the driven push bar (331) is inserted in the limiting through groove (334).

8. A portable household floor-standing LCD bracket according to claim 1, characterized in that: A plurality of anti-slip lines (37) are uniformly formed at the lower end of the limiting support block (34) for increasing the friction force between the limiting support block (34) and the ground.

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