CN210073211U

CN210073211U - Front maintenance mounting structure of large-screen spliced liquid crystal screen

Info

Publication number: CN210073211U
Application number: CN201921240644.2U
Authority: CN
Inventors: 裴金松; 王丽娟
Original assignee: Henan Huanou Electronic Technology Co Ltd
Current assignee: Henan Huanou Electronic Technology Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-02-14
Anticipated expiration: 2029-08-01

Abstract

The utility model discloses a front maintenance mounting structure of a large-screen spliced liquid crystal screen, which comprises a mounting rack and a plurality of liquid crystal screens arranged in the front of the mounting rack in an array manner, wherein the liquid crystal screens are detachably fixed on the mounting rack, and the back surfaces of the liquid crystal screens are provided with a first connecting device; a plurality of slide rails are arranged on the mounting rack, the slide rails and each row or each column of the liquid crystal display array are arranged in a one-to-one correspondence manner, slide blocks are arranged on the slide rails in a sliding manner, one end of an expansion bracket is arranged on each slide block, a rotatable connecting disc is arranged at the other end of the expansion bracket, and a second connecting device is arranged at the front side of the connecting disc; under the action of the first driving device, the sliding block slides along the sliding rail; under the action of the second driving device, the connecting disc rotates to enable the first connecting device to be detachably connected with the second connecting device. Therefore, the plurality of liquid crystal screens share the same telescopic frame, the integral quality of the screen is greatly reduced, the cost is effectively controlled, and the large-screen splicing liquid crystal screen is widely applied.

Description

Front maintenance mounting structure of large-screen spliced liquid crystal screen

Technical Field

The utility model belongs to the technical field of the display screen, specifically say, in particular to front maintenance mounting structure of large screen concatenation LCD screen.

Background

At present, a spliced liquid crystal display screen scheme is often adopted for a large-screen display screen, and a front maintenance installation structure is often adopted under the condition that the installation and maintenance space is limited. The existing front maintenance mounting structure adopts a buckle type design, and a spliced screen and a support are clamped when being compressed to return to a fixed position, so that the spliced screen is fixed; when the screen is continuously pressed to a certain position, the screen is popped up by the buckle, which is similar to a pressing type ball-point pen. The traditional mounting structure is extremely easy to block; in the long-term pressing and ejecting process, the fastener is easy to malfunction due to abrasion; moreover, as the structure is too precise, once a problem occurs, the maintenance is extremely difficult, the replacement is only needed, and the use cost is high; then, the ejection speed is very high in practical use, and a hydraulic support is needed to adjust the ejection speed, so that the cost of the front maintenance support is increased; moreover, each spliced screen of the front maintenance mounting structure is correspondingly provided with a front maintenance support, and for the spliced screen with a large screen, the whole screen is large in mass, not only is the mounting inconvenient, but also the requirement on the fixed strength of the mounting support is high, and the large-screen front maintenance mounting structure is limited by a plurality of limitations.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a front maintenance mounting structure of light large screen concatenation LCD screen of quality.

The above technical purpose of the present invention can be achieved by the following technical solutions: a front maintenance mounting structure of a large-screen spliced liquid crystal screen comprises a mounting frame and a plurality of liquid crystal screens arranged on the front side of the mounting frame in an array mode, wherein the liquid crystal screens are detachably fixed on the mounting frame, and a first connecting device is arranged on the back side of each liquid crystal screen; the mounting frame is further provided with a plurality of slide rails, the slide rails are arranged in one-to-one correspondence with the rows or the columns of the liquid crystal display array, slide blocks are slidably mounted on the slide rails, one end of an expansion bracket is mounted on each slide block, a rotatable connecting disc is mounted at the other end of the expansion bracket, and a second connecting device is arranged on the front side of the connecting disc; the sliding block is arranged on the sliding rail and comprises a first driving device and a second driving device, and the sliding block slides along the sliding rail under the action of the first driving device; under the action of the second driving device, the connecting disc rotates to enable the first connecting device to be detachably connected with the second connecting device.

By adopting the structure, when a certain liquid crystal screen needs to be maintained, the telescopic frame is moved to the back of the liquid crystal screen only by the first driving device, then the telescopic frame extends out to enable the second connecting device of the connecting disc to move to a position which can be matched with the first connecting device of the liquid crystal screen, then the first connecting device is connected with the second connecting device by the second driving device, and finally the telescopic frame continues to extend out to push the liquid crystal screen forwards, so that the maintenance can be carried out; after maintenance is finished, the liquid crystal screen is retracted into the mounting frame by the telescopic frame to be fixed, and the first connecting device and the second connecting device are disconnected by the second driving device. Therefore, the plurality of liquid crystal screens can share the same telescopic frame, and a front maintenance support does not need to be installed on each liquid crystal screen, so that the overall quality of the screen is greatly reduced, the cost is effectively controlled, the installation and the use are less limited due to the reduction of the quality, and the wide application of the large-screen spliced liquid crystal screen is facilitated.

The mounting bracket is including horizontal many joint strips side by side or vertical side by side, the joint strip includes the baffle of panel vertical arrangement and the joint board of perpendicular connection in the baffle front side the equipartition has a plurality ofly to the bellied elasticity bail in plate body both sides on the joint board, the LCD screen is located between the joint board of adjacent joint strip to elasticity bail card is gone into and is corresponded the draw-in groove that sets up on the LCD screen, thereby can dismantle fixedly with LCD screen and mounting bracket, the baffle is located the rear side that corresponds the LCD screen edge. The detachable fixing structure of the liquid crystal screen on the mounting rack is simple, and the liquid crystal screen can be fixed and pushed out of the mounting rack only by utilizing the elasticity of the elastic staple bolt.

The clamping plate and the elastic clamping nails are formed by punching an aluminum alloy plate. The clamping plate is light in weight, high in strength, easy to form an elastic clamping nail and good in elasticity.

The first connecting device comprises at least two connecting blocks, and connecting holes are formed in the connecting blocks; the second connecting device comprises connecting columns in one-to-one correspondence with the connecting blocks, one ends of the connecting columns are vertically fixed with the front side of the connecting disc, the other ends of the connecting columns are bent to form connecting teeth, and when the connecting disc rotates, the connecting teeth are inserted into corresponding connecting holes to fixedly connect the liquid crystal screen and the connecting disc. The first connecting device and the second connecting device are simple in structure and stable and reliable in connection.

The second driving device comprises a connecting disc motor fixed on the rear side of the connecting disc, and the connecting disc motor drives the connecting disc to rotate through a gear. The second driving device has a simple structure.

The telescopic frame comprises a first connecting rod, a second connecting rod and a telescopic rod, the telescopic rod is hinged between one end of the first connecting rod and one end of the second connecting rod to form two hinged points, the two hinged points are respectively located on the sliding block and the connecting disc, gears are mounted at the other ends of the first connecting rod and the second connecting rod and are meshed with the two gears, a gear carrier is mounted between the two gears, a telescopic frame motor is connected to a central shaft of one of the gears, when the telescopic frame motor rotates, the two gears rotate in opposite directions, the first connecting rod and the second connecting rod are opened or closed, the telescopic rod extends or shortens, and the connecting disc is far away from or is close to the sliding block. The telescopic frame has simple structure, stable integral structure and good stress; the thickness is small after the screen is folded, and the occupied space of the whole installation of the screen can be controlled.

The mounting frame is further provided with screw rods which correspond to the slide rails one by one, the slide blocks are sleeved on the screw rods through nuts, and the end of each screw rod is fixedly provided with a screw rod motor, so that a first driving device is formed. The first driving device is simple in structure and convenient to use.

The front end of connection pad is fixed with the locating pin, the locating pin includes the back end and cup joints the anterior segment on the back end, fills up between anterior segment and back end and is equipped with compression spring, at each the pivot is all installed to the rear side of LCD screen, the central line and the LCD screen rear side wall parallel arrangement of pivot are connected with the pin motor in the one end of pivot, and the vertical fixation has the pin in the pivot, the section of pin is arc, and when the pin motor rotates, the pin is with LCD screen rear side wall parallel and perpendicular two states between change, when the pin is perpendicular with LCD screen rear side wall, the pin cooperates with the locating pin, fixes a position the connection pad of removal. In practical use, the movable sliding block and the connecting disc can be positioned by matching the stop rod and the positioning pin only by rotating the stop rod behind the liquid crystal screen to be maintained to be vertical to the rear side wall of the liquid crystal screen, so that the connecting disc is positioned at the position where the first connecting device is over against the second connecting device.

Has the advantages that: the utility model discloses a redesign connection structure between LCD screen and the mounting bracket and set up the expansion bracket and the connecting device who corresponds, make the same expansion bracket that polylith LCD screen can share, make the holistic quality of screen obtain very big reduction, not only controlled the cost effectively, the limitation that receives moreover still less is favorable to the wide application of large screen concatenation LCD screen.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a right side view of the mounting bracket of fig. 1.

FIG. 3 is a schematic view of the structure of the clamping bar of FIG. 1.

Fig. 4 is a right side view of fig. 3.

Fig. 5 is a schematic structural diagram of the sliding block, the telescopic frame and the connecting disc in fig. 1.

Fig. 6 is a schematic structural diagram of the liquid crystal panel in fig. 1.

Fig. 7 is a left side view of fig. 6.

Fig. 8 is a schematic structural view of the first connecting device and the second connecting device.

Fig. 9 is a schematic structural view of a positioning pin.

Reference numerals: the liquid crystal display device comprises a mounting frame 1, a clamping strip 111, a clamping plate 111a, a baffle 111b, an elastic staple bolt 111c, a liquid crystal screen 2, a sliding rail 3, a screw rod 4, a positioning pin 5, a compression spring 5a, a connecting block 6, a connecting hole 6a, a sliding block 7, a nut 8, an expansion link 9, a first connecting rod 10, a second connecting rod 11, a gear frame 12, an expansion link motor 13, a connecting disc 14, a connecting disc motor 15, a connecting column 16, a connecting tooth 16a, a screw rod motor 17, a stop lever 18, a stop lever motor 19 and a rotating shaft 21.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1, fig. 2, fig. 3, and fig. 4, the embodiment provides a front maintenance mounting structure of a large-screen spliced liquid crystal display, which includes a mounting frame 1 and a plurality of liquid crystal screens 2 arranged in an array on the front side of the mounting frame 1, where the liquid crystal screens 2 are detachably fixed on the mounting frame 1. The fixed knot of LCD screen 2 on mounting bracket 1 constructs and should make LCD screen 2 backward press can be connected with mounting bracket 1, pushes away forward and can break away from the connection on mounting bracket 1, and concrete structure is as follows: mounting bracket 1 is including horizontal many joint strips 111 side by side or vertical side by side, joint strip 111 includes the baffle 111b of face vertical arrangement and connects the joint board 111a in baffle 111b front side perpendicularly. A plurality of elastic clips 111c protruding toward both sides of the plate body are uniformly distributed on the engaging plate 111 a. LCD screen 2 is located between the joint board 111a of adjacent joint strip 111 to elasticity bail 111c card is gone into the draw-in groove that corresponds the setting on LCD screen 2, thereby can dismantle fixedly with LCD screen 2 and mounting bracket 1. The barrier 111b is positioned at a rear side corresponding to the edge of the liquid crystal panel 2 to restrict the backward movement of the liquid crystal panel 2. The engaging plate 111a and the elastic clip 111c are preferably press-formed of an aluminum alloy plate.

As shown in fig. 1 and 2, a plurality of slide rails 3 are further arranged on the mounting frame 1, the slide rails 3 are arranged in one-to-one correspondence with rows or columns of the liquid crystal display 2 array, in this embodiment, the slide rails 3 are arranged in one-to-one correspondence with rows of the liquid crystal display 2 array, and a slider 7 is slidably mounted on each slide rail 3. The device also comprises a first driving device, and the sliding block 7 slides along the sliding rail 3 under the action of the first driving device. The mounting frame 1 is further provided with screw rods 4 which are in one-to-one correspondence with the slide rails 3, the slide block 7 is sleeved on the screw rods 4 through nuts 8, the nuts 8 are rotatably mounted on the slide block 7, and the movement of the nuts 8 along the axial direction is limited, so that the nuts 8 and the screw rods 4 form a screw rod nut mechanism. A screw motor 17 is fixed to an end of each of the screws 4, thereby constituting a first driving device. When the screw motor 17 rotates, the screw 4 and the nut 8 are driven to move the slide block 7 along the slide rail 3.

As shown in fig. 1 and 5, one end of an expansion bracket is attached to the slider 7, and a rotatable connection plate 14 is attached to the other end of the expansion bracket. The telescopic frame comprises a first connecting rod 10, a second connecting rod 11 and a telescopic rod 9, wherein the telescopic rod 9 is hinged between one end head of the first connecting rod 10 and one end head of the second connecting rod 11 so as to form two hinge points, and the two hinge points are respectively positioned on the sliding block 7 and the connecting disc 14. Gears are mounted at the other ends of the first connecting rod 10 and the second connecting rod 11, the two gears are meshed, a gear carrier 12 is mounted between the two gears, an expansion bracket motor 13 is connected to the central shaft of one of the gears, when the expansion bracket motor 13 rotates, the two gears rotate in opposite directions, the first connecting rod 10 and the second connecting rod 11 are opened or closed, the expansion rod 9 extends or shortens, and the connecting disc 14 is far away from or close to the sliding block 7.

As shown in fig. 1, 5, 6, 7, and 8, a first connection device is disposed on the back surface of the liquid crystal panel 2, and a second connection device is disposed on the front side of the land 14. The connecting disc 14 rotates under the action of the second driving device, so that the first connecting device and the second connecting device are detachably connected. Specifically, the method comprises the following steps: the first connecting device comprises at least two connecting blocks 6, and connecting holes 6a are formed in the connecting blocks 6. In this embodiment, there are four connecting blocks 6. The second connecting device comprises connecting columns 16 which correspond to the connecting blocks 6 one by one, one end of each connecting column 16 is vertically fixed with the front side of the connecting disc 14, and the other end of each connecting column 16 is bent to form a connecting tooth 16a parallel to the front side of the connecting disc 14. When the connecting disc 14 rotates, the connecting teeth 16a are inserted into the corresponding connecting holes 6a, and the liquid crystal screen 2 is fixedly connected with the connecting disc 14. The second driving device comprises a connecting disc motor 15 fixed on the rear side of the connecting disc 14, the connecting disc 14 is movably arranged on the telescopic frame, and the connecting disc motor 15 drives the connecting disc 14 to rotate through a gear.

As shown in fig. 1, 8 and 9, a positioning pin 5 is fixed at the front end of the connecting disc 14, the positioning pin 5 comprises a rear section and a front section sleeved on the rear section, and a compression spring 5a is padded between the front section and the rear section. The front section is preferably cylindrical. Each rotating shaft 21 is installed on the rear side of the liquid crystal screen 2, the central line of each rotating shaft 21 is arranged in parallel with the rear side wall of the liquid crystal screen 2, one end of each rotating shaft 21 is connected with a stop lever motor 19, a stop lever 18 is vertically fixed on each rotating shaft 21, and the section of each stop lever 18 is arc-shaped. When the stop lever motor 19 rotates, the stop lever 18 is switched between a state of being parallel to and perpendicular to the rear side wall of the liquid crystal screen 2, and when the stop lever 18 is perpendicular to the rear side wall of the liquid crystal screen 2, the stop lever 18 is matched with the positioning pin 5 to position the moving connecting disc 14.

The working principle is as follows:

when the large screen splicing liquid crystal screen is installed, the installation frame 1 is firstly built, then each liquid crystal screen 2 is installed on the installation frame 1 in an array mode, when the single liquid crystal screen 2 is installed, the liquid crystal screen 2 only needs to be pushed backwards in the front, and the elastic clamping nail 111c on the clamping plate 111a is clamped into the clamping groove correspondingly arranged on the liquid crystal screen 2.

When the large-screen spliced liquid crystal screen 2 is normally used, the stop lever 18 is in a state of being parallel to the rear side wall of the liquid crystal screen 2.

When a certain liquid crystal screen 2 needs maintenance, the stop lever motor 19 is started to rotate the rotating shaft 21, and the stop lever 18 is driven to rotate to a state vertical to the rear side wall of the liquid crystal screen 2; then, starting a corresponding screw rod motor 17 to enable a corresponding sliding block 7 to move along the sliding rail 3 until the positioning pin 5 is blocked by the stop lever 18, and enabling the connecting disc 14 to be positioned at a position where the second connecting device is matched with the first connecting device on the liquid crystal display 2 to be maintained; then the telescopic frame motor 13 is started to extend the telescopic rod 9 until the connecting teeth 16a are positioned at the positions corresponding to the connecting holes 6 a; then the connecting disc motor 15 is started to enable the connecting disc 14 to rotate, and the connecting teeth 16a are inserted into the corresponding connecting holes 6 a; then the expansion bracket motor 13 continues to rotate, and pushes the liquid crystal screen 2 forward, so that the elastic staple bolt 111c is separated from the clamping groove, and the liquid crystal screen 2 can be pushed out of the mounting bracket 1 for maintenance.

After the front maintenance of the liquid crystal screen 2 is completed, the liquid crystal screen 2 can be fixed on the mounting frame 1 again only by starting the telescopic frame motor 13 to pull back the liquid crystal screen 2 and clamping the elastic staple bolts 111c into the corresponding clamping grooves; then the disc motor 15 rotates to withdraw the connecting teeth 16a from the connecting holes 6 a; then the telescoping bracket motor 13 rotates to withdraw the connecting disc 14, and the screw motor 17 rotates to withdraw the telescoping bracket, and simultaneously the stop lever motor 19 rotates to withdraw the stop lever 18.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a front maintenance mounting structure of large screen concatenation LCD screen which characterized by: the liquid crystal display panel comprises an installation frame and a plurality of liquid crystal screens arranged on the front side of the installation frame in an array mode, wherein the liquid crystal screens are detachably fixed on the installation frame, and a first connecting device is arranged on the back surfaces of the liquid crystal screens; the mounting frame is further provided with a plurality of slide rails, the slide rails are arranged in one-to-one correspondence with the rows or the columns of the liquid crystal display array, slide blocks are slidably mounted on the slide rails, one end of an expansion bracket is mounted on each slide block, a rotatable connecting disc is mounted at the other end of the expansion bracket, and a second connecting device is arranged on the front side of the connecting disc; the sliding block is arranged on the sliding rail and comprises a first driving device and a second driving device, and the sliding block slides along the sliding rail under the action of the first driving device; under the action of the second driving device, the connecting disc rotates to enable the first connecting device to be detachably connected with the second connecting device.

2. The front maintenance mounting structure of the large-screen spliced liquid crystal display as claimed in claim 1, wherein: the mounting bracket is including horizontal many joint strips side by side or vertical side by side, the joint strip includes the baffle of panel vertical arrangement and the joint board of perpendicular connection in the baffle front side the equipartition has a plurality ofly to the bellied elasticity bail in plate body both sides on the joint board, the LCD screen is located between the joint board of adjacent joint strip to elasticity bail card is gone into and is corresponded the draw-in groove that sets up on the LCD screen, thereby can dismantle fixedly with LCD screen and mounting bracket, the baffle is located the rear side that corresponds the LCD screen edge.

3. The front maintenance mounting structure of the large-screen spliced liquid crystal display screen as claimed in claim 2, wherein: the clamping plate and the elastic clamping nails are formed by punching an aluminum alloy plate.

4. The front maintenance mounting structure of the large-screen spliced liquid crystal display screen as claimed in claim 3, wherein: the first connecting device comprises at least two connecting blocks, and connecting holes are formed in the connecting blocks; the second connecting device comprises connecting columns in one-to-one correspondence with the connecting blocks, one ends of the connecting columns are vertically fixed with the front side of the connecting disc, the other ends of the connecting columns are bent to form connecting teeth, and when the connecting disc rotates, the connecting teeth are inserted into corresponding connecting holes to fixedly connect the liquid crystal screen and the connecting disc.

5. The front maintenance mounting structure of the large-screen spliced liquid crystal display screen as claimed in claim 4, wherein: the second driving device comprises a connecting disc motor fixed on the rear side of the connecting disc, and the connecting disc motor drives the connecting disc to rotate through a gear.

6. The front maintenance mounting structure of the large-screen spliced liquid crystal display screen as claimed in claim 5, wherein: the telescopic frame comprises a first connecting rod, a second connecting rod and a telescopic rod, the telescopic rod is hinged between one end of the first connecting rod and one end of the second connecting rod to form two hinged points, the two hinged points are respectively located on the sliding block and the connecting disc, gears are mounted at the other ends of the first connecting rod and the second connecting rod and are meshed with the two gears, a gear carrier is mounted between the two gears, a telescopic frame motor is connected to a central shaft of one of the gears, when the telescopic frame motor rotates, the two gears rotate in opposite directions, the first connecting rod and the second connecting rod are opened or closed, the telescopic rod extends or shortens, and the connecting disc is far away from or is close to the sliding block.

7. The front maintenance mounting structure of the large-screen spliced liquid crystal display screen as claimed in claim 6, wherein: the mounting frame is further provided with screw rods which correspond to the slide rails one by one, the slide blocks are sleeved on the screw rods through nuts, and the end of each screw rod is fixedly provided with a screw rod motor, so that a first driving device is formed.

8. The front maintenance mounting structure of the large screen splicing liquid crystal screen according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that: the front end of connection pad is fixed with the locating pin, the locating pin includes the back end and cup joints the anterior segment on the back end, fills up between anterior segment and back end and is equipped with compression spring, at each the pivot is all installed to the rear side of LCD screen, the central line and the LCD screen rear side wall parallel arrangement of pivot are connected with the pin motor in the one end of pivot, and the vertical fixation has the pin in the pivot, the section of pin is arc, and when the pin motor rotates, the pin is with LCD screen rear side wall parallel and perpendicular two states between change, when the pin is perpendicular with LCD screen rear side wall, the pin cooperates with the locating pin, fixes a position the connection pad of removal.