CN111724690B

CN111724690B - Splicing device and display screen

Info

Publication number: CN111724690B
Application number: CN201910221124.5A
Authority: CN
Inventors: 谭安春; 李振龙; 汪生和; 杨俊丰
Original assignee: Liya Wisdom Display Shenzhen Co ltd
Current assignee: Liya Wisdom Display Shenzhen Co ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2025-01-28
Anticipated expiration: 2039-03-22
Also published as: CN111724690A

Abstract

The present invention relates to a splicing device. It includes a first locking mechanism and a second locking mechanism, wherein the first locking mechanism is used to be fixed on a first display module, and the second locking mechanism is used to be fixed on a second display module spliced with the first display module, wherein the first locking mechanism includes: a first locking seat; a locking block, which is slidably arranged on the first locking seat; a first positioning component, which is arranged on the first locking seat, and the first positioning component can cooperate with the locking block to limit the sliding of the locking block and the movement along the direction intersecting the sliding direction; and a second positioning component, which is arranged on the first locking seat, and the second positioning component can apply a force to the lock buckle to limit the vibration of the locking block along the direction intersecting the movement direction; when the fixed position of the locking block on the first locking seat is changed and the locking block is locked with the second locking mechanism, the splicing angle between the first and second display modules is adjusted. This improves the locking stability of the splicing device.

Description

Splicing device and display screen

Technical Field

The invention relates to the technical field of display screens, in particular to a splicing device and a display screen comprising the same.

Background

In the installation process of the arc-shaped display screen, two adjacent display modules are required to be spliced into a certain included angle, and then the two display modules forming the included angle are fixed by adopting the splicing device. But traditional splicing apparatus can lead to the contained angle between two spliced display modules to produce the change, and then influences the installation accuracy of whole arc display screen.

Disclosure of Invention

The invention solves the technical problem of how to improve the locking stability of the splicing device.

The utility model provides a splicing apparatus, includes first locking mechanism and second locking mechanism, first locking mechanism is used for fixing on first display module assembly, second locking mechanism is used for fixing on the second display module assembly that splices mutually with first display module assembly, wherein, first locking mechanism includes:

a first lock base;

The locking piece is arranged on the first lock seat in a sliding manner;

A first positioning component arranged on the first lock seat and capable of being matched with the lock block to limit the sliding of the lock block and the movement of the lock block in the intersecting sliding direction, and

The second positioning component is arranged on the first lock seat and can apply acting force to the lock catch so as to limit the vibration of the lock block along the direction intersecting with the moving direction;

And when the fixed position of the locking piece on the first lock seat is changed and the locking piece is locked with the second locking mechanism, the splicing angle between the first display module and the second display module is adjusted.

In one embodiment, the first lock seat is provided with a mounting cavity, and the lock block can be in sliding fit with the mounting cavity.

In one embodiment, the first positioning component comprises at least two first positioning columns, a plurality of first positioning holes are formed in the bottom wall of the mounting cavity at intervals, the first positioning columns can be inserted into the first positioning holes, and when the first positioning columns are matched with different first positioning holes, the fixed positions of the locking blocks on the first lock seat can be changed.

In one embodiment, the second positioning assembly comprises a second positioning column and a rotating handle, the second positioning column is in threaded connection with the first lock seat and can extend into the mounting cavity, the rotating handle is connected with a part, located outside the mounting cavity, of the second positioning column, a plurality of second positioning holes are formed in the first lock seat at intervals, the second positioning column can be inserted into the second positioning holes, when the rotating handle rotates to drive the second positioning column to increase the length of the second positioning column extending into the mounting cavity, the second positioning column can press the locking block on the bottom wall of the mounting cavity, and when the second positioning column is matched with different second positioning holes, the fixed position of the locking block on the first lock seat can be changed.

In one embodiment, the first locking mechanism further comprises a guide piece and an elastic piece, the locking piece is provided with a containing hole, the elastic piece is located in the containing hole and is propped between the guide piece and the locking piece, the guide piece can slide relative to the containing hole, and when the second positioning column reduces the length of the second positioning column extending into the mounting cavity to stop propping the locking piece, the elastic piece pushes the locking piece to be far away from the bottom wall of the mounting cavity.

In one embodiment, a protruding strip is arranged on the side wall of the mounting cavity, a sinking groove in sliding fit with the protruding strip is formed in the surface of the locking piece in a recessed mode, and when the locking piece slides to a limit position relative to the first locking seat, the protruding strip is in contact with the side wall of the sinking groove, so that the locking piece is partially contained in the mounting cavity.

In one embodiment, the side wall of the mounting cavity is provided with a clamping column, the locking block is provided with a plurality of clamping holes, the clamping holes are arranged on the surface of the locking block at intervals and can be matched with the clamping column, and when the fixing position of the locking block on the first locking seat is adjusted, the clamping column is matched with the clamping holes corresponding to different fixing positions to prompt adjustment in place.

In one embodiment, the bottom wall of the mounting cavity is arc-shaped, and the locking piece can slide along the extending direction of the bottom wall.

In one embodiment, the second locking mechanism includes:

A second lock base;

The second lock seat is rotationally connected with the handle;

A loop bar fixedly connected with the handle, the loop bar can be matched with a groove arranged on the locking block, and

The control piece is rotationally connected with the second lock seat and comprises a blocking head which can be abutted with the handle;

When the control member rotates to drive the blocking head to move to the second position, the blocking head can be abutted with the handle, the handle stops rotating, and the loop bar is matched with the groove to be locked.

In one embodiment, the control member further comprises a rotating rod rotatably connected with the second lock seat, the blocking head is fixed at the end part of the rotating rod, the handle is provided with a through hole, the rotating rod is arranged in the through hole in a penetrating mode, when the blocking head moves to a first position and the handle rotates, the blocking head can move in the through hole relative to the handle, and when the blocking head moves to a second position, the blocking head abuts against the handle to prevent the handle from rotating.

In one embodiment, the second locking mechanism further comprises an inserting rod and a sliding rod which are connected with each other, the sliding rod is mounted on the handle, a sliding hole and a sliding groove which are communicated with each other are formed in the second lock seat, the inserting rod is in sliding fit with the sliding hole, a jack in which the inserting rod can be inserted is formed in the locking piece, the sliding rod can slide in the sliding groove, and when the handle rotates to drive the sliding rod to reciprocate in the sliding groove, the sliding rod drives the inserting rod to reciprocate in the sliding hole to insert or withdraw from the jack.

In one embodiment, two ends of the loop bar are respectively fixed on the handle, and a part of the first lock seat is penetrated in a space surrounded by the loop bar.

In one embodiment, the loop bar comprises a first connecting section and a second connecting section which are perpendicular to each other, the first connecting sections are two and parallel to each other, one end of each first connecting section is fixed on the handle, and the other end of each first connecting section is connected with the second connecting section.

In one embodiment, the handle comprises two lugs arranged at intervals, and the second lock seat comprises a boss, and the boss is positioned in a gap between the two lugs and is rotationally connected with the lugs.

A display screen comprises any one of the splicing devices.

The technical effect of one embodiment of the invention is that the first positioning component can effectively limit the sliding of the locking piece and the movement of the locking piece along the direction intersecting the sliding direction, the second positioning component can limit the vibration of the locking piece along the direction intersecting the movement, namely the movement of the locking piece along the direction pointed by three coordinate axes in a space rectangular coordinate system is limited, and when the locking piece is fixed on the first locking seat, the shaking or vibration of the locking piece relative to the first locking seat is completely eliminated, so that the stability and the reliability of the fixing of the locking piece are improved. When the locking piece is completely fixed and locked with the second locking mechanism, the splicing included angle between the first display module and the second display module cannot be changed due to shaking or vibration of the locking piece, and the splicing precision between the first display module and the second display module is improved.

Drawings

FIG. 1 is a schematic diagram of an overall assembly structure of a splicing device according to an embodiment;

FIG. 2 is a schematic view of the first locking mechanism of FIG. 1;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a schematic view of the structure of FIG. 3 at a first viewing angle;

FIG. 5 is a schematic view of the structure of FIG. 3 at a second viewing angle;

FIG. 6 is a schematic view of the structure of FIG. 3 including a slider;

FIG. 7 is a perspective cross-sectional view of FIG. 6;

FIG. 8 is a schematic view of the second locking mechanism of FIG. 1;

FIG. 9 is a perspective cross-sectional view of FIG. 8;

Fig. 10 is an exploded view of fig. 8.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and the like are used herein for illustrative purposes only and do not represent the only embodiment.

Referring to fig. 1, a splicing device 10 according to an embodiment of the present invention includes a first locking mechanism 11 and a second locking mechanism 12, where the first locking mechanism 11 is fixed on a first display module, and the second locking mechanism 12 is used for locking the first locking mechanism 11 and the second locking mechanism 12 on a second display module, so that the first display module and the second display module can be spliced.

Referring to fig. 1 to 6, in some embodiments, the first locking mechanism 11 includes a first lock base 100, a lock block 200, a first positioning component 300 and a second positioning component 400, where the first lock base 100 is fixedly connected with the first display module. The lock block 200 is slidably disposed on the first lock base 100, for example, the first lock base 100 is provided with an installation cavity 101, the installation cavity 101 has a structure with two ends open and being circumferentially closed, the lock block 200 is slidably matched with the installation cavity 101, the bottom wall 102 of the installation cavity 101 has an arc surface, the surface (i.e., the lower surface) of the lock block 200, which is close to the bottom wall 102 of the installation cavity 101, has an arc surface as well, and when the lock block 200 is on the first lock base 100, the bottom wall 102 of the installation cavity 101 and the lower surface of the lock block 200 are mutually attached, and the lock block 200 can slide along the extending direction (i.e., the first direction) of the bottom wall 102. Of course, the first lock base 100 is provided with a sliding rail, and the lock block 200 may be slidably engaged with the sliding rail. The first positioning assembly 300 is provided on the first lock base 100 and can be engaged with the lock block 200, and the first positioning assembly 300 can restrict the sliding of the lock block 200 in the first direction and the movement in the second direction. The second positioning assembly 400 is also disposed on the first lock base 100 and is capable of applying a force to the lock catch, and the second positioning assembly 400 is capable of limiting the vibration of the lock block 200 in the third direction. The first direction, the second direction and the third direction can be vertically intersected, so that directions pointed by three coordinate axes in a space rectangular coordinate system are formed. In the process of adjusting the splicing angle between the first display module and the second display module, the lock block 200 can slide relative to the first lock seat 100 to change the fixing position of the lock block on the first lock seat 100, and when the lock block 200 with the changed fixing position is locked with the second locking mechanism 12, the splicing angle between the first display module and the second display module is set.

The first positioning assembly 300 includes at least two first positioning posts 310, the two first positioning posts 310 are fixed on the bottom wall 102 of the mounting cavity 101, the lock block 200 is provided with a plurality of first positioning holes 210, the first positioning holes 210 are located on the lower surface of the lock block 200, the first positioning holes 210 are arranged in two rows along the first direction on the lock block 200, and each row of first positioning holes 210 corresponds to one of the first positioning posts 310. When the two first positioning posts 310 are inserted into the first positioning holes 210, respectively, the sliding of the lock block 200 in the first direction and the movement in the second direction are simultaneously restricted, i.e., the forward and backward sliding and the left and right movement of the lock block 200 are restricted by the action of the two first positioning posts 310. In the process of adjusting the splicing angle of the first display module and the second display module, the first positioning column 310 can be matched with different first positioning holes 210, so that the fixing position of the locking piece 200 on the first lock base 100 is changed. In fact, the cooperation of the first positioning posts 310 with each of the first positioning holes 210 may correspond to a fixed position of one lock block 200, and each fixed position of the lock block 200 corresponds to a splicing angle between one first display module and one second display module, for example, when the number of the first positioning holes 210 in a row is five, the fixed positions of the lock block 200 on the first lock base 100 are five, the splicing angles between the first display module and the second display module are five, and the splicing angles may be-10 °, -5 °,0 °,5 ° and 10 °.

The second positioning assembly 400 comprises a second positioning column 410 and a rotary handle 420, wherein the second positioning column 410 is in threaded connection with the first lock base 100 and can extend into the installation cavity 101, the rotary handle 420 is located outside the installation cavity 101 and is connected with a part of the second positioning column 410 located outside the installation cavity 101, a plurality of second positioning holes 220 are formed in the first lock base 100 at intervals, the second positioning holes 220 are formed in the surface (i.e. the upper surface) of the lock block 200 away from the bottom wall 102 of the installation cavity 101, the second positioning holes 220 are arranged in a row along the first direction, the second positioning columns 410 can be inserted into the second positioning holes 220, when the rotary handle 420 is rotated forward to drive the second positioning column 410 to rotate, the length of the second positioning column 410 extending into the installation cavity 101 is increased and inserted into the second positioning holes 220, when the length of the second positioning column 410 extending into the installation cavity 101 is large enough, the second positioning column 410 applies a pressing force to the lock block 200, the lower surface of the lock block 200 is closely attached to the bottom wall 102 of the installation cavity 101, and the second positioning column 410 can be limited in the third direction due to the fact that the second positioning column 200 is limited to the vibration in the upper direction. In the process of adjusting the splicing angle of the first display module and the second display module, the second positioning column 410 can be matched with the second positioning holes 220, thereby changing the fixing position of the lock block 200 on the first lock base 100. When the knob 420 is reversely rotated to drive the second positioning post 410 to rotate, the length of the second positioning post 410 extending into the mounting cavity 101 is reduced and separated from the second positioning hole 220, the abutting force of the second positioning post 410 on the lock block 200 is eliminated, at this time, the lock block 200 can be moved away from the bottom wall 102 of the mounting cavity 101 along the third direction, so that the first positioning post 310 is separated from the first positioning hole 210, and the lock block 200 can slide along the first direction to adjust the fixing position. Likewise, the number of the second positioning holes 220 may be five, so as to correspond to five fixing positions of the lock block 200 and five splicing angles between the first display module and the second display module.

Therefore, by the action of the first positioning post 310 and the second positioning post 410, after the lock block 200 is fixed on the first lock base 100, the movement of the lock block 200 in the first, second and third directions is completely limited, so that shaking or vibration of the lock block 200 relative to the first lock base 100 is eliminated, and the stability and reliability of the fixation of the lock block 200 are improved. When the locking piece 200 is completely fixed and locked with the second locking mechanism 12, the splicing angle between the first display module and the second display module is not changed due to shaking or vibration of the locking piece 200, so that the splicing precision between the first display module and the second display module is ensured.

Referring to fig. 1 to 3, 6 and 7, in some embodiments, the first locking mechanism 11 further includes a guide 270 and an elastic member 280, where the guide 270 may be a cylindrical guide post, and the elastic member 280 may be a spring. The lock block 200 has a receiving hole 290 concavely formed on a lower surface thereof, and the elastic member 280 is disposed in the receiving hole 290 and is pressed between the guide member 270 and the lock block 200, and the guide member 270 is slidably movable with respect to the receiving hole 290. When the second positioning post 410 abuts against the locking piece 200 and fixes it, the guide member 270 is completely accommodated in the accommodating hole 290, and the end of the guide member abuts against the bottom wall 102 of the mounting cavity 101, and the elastic member 280 stores energy. When the second positioning post 410 stops pressing the lock block 200, the elastic member 280 releases energy, the end of the guide member 270 still abuts against the bottom wall 102 of the mounting cavity 101, and the elastic member 280 pushes the lock block 200 to move in a direction (upward) away from the bottom wall 102 of the mounting cavity 101. Under the combined action of the guide member 270 and the elastic member 280, when the second positioning post 410 stops pressing the lock block 200, the lock block 200 can automatically move upwards, so that the first positioning post 310 is separated from the first positioning hole 210, and the fixing position of the lock block 200 relative to the first lock base 100 can be successfully adjusted.

In some embodiments, a protrusion 110 is disposed on one of the side walls of the mounting cavity 101, a recess 230 is formed on one of the side surfaces of the lock block 200, the recess 230 may extend along the first direction, the protrusion 110 has a recess 230 in sliding fit, when the lock block 200 slides forward to a limit position along the first direction relative to the first lock base 100, the protrusion 110 abuts against the side wall of the recess 230, and the protrusion 110 blocks the lock block 200 from sliding forward, so as to prevent the lock block 200 from being drawn out from the mounting cavity 101, so that a part of the lock block 200 is continuously accommodated in the mounting cavity 101. Of course, the lock block 200 is further provided with a baffle 250, when the lock block 200 slides backwards to a limit position along the first direction relative to the first lock seat 100, the baffle 250 interferes with the first lock seat 100, the baffle 250 prevents the lock block 200 from continuing to slide backwards, and the lock block 200 can be prevented from being pulled out of the mounting cavity 101, so that the lock block 200 can be matched with the mounting cavity 101 all the time through the functions of the raised strips 110 and the baffle 250, namely, the lock block 200 is always located on the first lock seat 100, the lock block 200 is prevented from being separated from the first lock seat 100 in the transportation and storage process, and the convenience of using the whole subsequent splicing device 10 is improved.

The other side wall of the mounting cavity 101 is provided with a clamping column 120, the other side surface of the locking block 200 is provided with a plurality of clamping holes 271, the clamping holes 271 are arranged at intervals along the first direction, and the clamping column 120 can be matched with the clamping holes 271. In the process of adjusting the fixing position of the lock block 200 on the first lock seat 100, the clamping posts 120 can be matched with clamping holes 271 at different fixing positions, and a clamping sense can be generated when the clamping posts are matched with the clamping holes, so that a prompt for adjusting the fixing position of the lock block 200 in place is played.

Referring also to fig. 1, 8-10, the second locking mechanism 12 includes a second lock base 500, a handle 600, a lever 700, and a control 800. The second lock base 500 is configured to be fixed on the second display module, and the second lock base 500 includes a boss 530. The handle 600 is rotatably connected with the second lock base 500, the handle 600 includes two lugs 620 arranged at intervals, the boss 530 is located in the gap between the two lugs 620, and the boss 530 is rotatably connected with the lugs 620 through the first rotating shaft 630.

The loop bar 700 is fixedly connected with the handle 600, two ends of the loop bar 700 are respectively fixed on the handle 600, and a part of the first lock seat 100 is penetrated in a space surrounded by the loop bar 700. For example, the loop bar 700 may include a first connecting section 710 and a second connecting section 720 that are perpendicular to each other, where the first connecting section 710 is two and parallel to each other, one end of the first connecting section 710 is fixed on the handle 600, and the other end of the first connecting section 710 is connected to the first connecting section 710, where the first connecting section 710 and the second connecting section 720 are connected to form a loop bar 700 with a "door" shape structure, and of course, the loop bar 700 may also be a curved arc structure. The locking piece 200 is provided with a groove 260, and when the second connecting section 720 of the loop bar 700 is matched with the groove 260, the first locking mechanism 11 and the second locking mechanism 12 are mutually locked. When the second connecting section 720 of the loop bar 700 stops being engaged with the groove 260, the first locking mechanism 11 and the second locking mechanism 12 are unlocked from each other.

The control member 800 includes a rotation lever 820 and a blocking head 810, one end of the rotation lever 820 is rotatably connected with the second lock base 500 through the second rotation shaft 830, the blocking head 810 is disposed at the other end of the rotation lever 820, the handle 600 is further provided with a through hole 610, and the rotation lever 820 is inserted into the through hole 610. When the rotating rod 820 rotates to drive the blocking head 810 to move to the first position, the blocking head 810 stops abutting against the handle 600, at this time, the handle 600 can be rotated to drive the sleeve rod 700 to be separated from the groove 260 to unlock, and in the process of rotating the handle 600, the blocking head 810 can move in the through hole 610 relative to the handle 600, and the through hole 610 provides a space for the blocking head 810, so that the blocking head 810 is effectively prevented from interfering with the rotation of the handle 600. When the rotating lever 820 rotates to drive the blocking head 810 to move to the second position, the blocking head 810 abuts against the handle 600, the blocking head 810 prevents the handle 600 from rotating, and at this time, the sleeve lever 700 cooperates with the groove 260 to achieve locking.

In some embodiments, the second locking mechanism 12 further includes a plug 910 and a slide bar 920 connected to each other, where the slide bar 920 is mounted on a lug 620 of the handle 600, the second lock base 500 is provided with a slide hole 510 and a slide groove 520 that are mutually communicated, the slide hole 510 may be a cylindrical hole, the plug 910 is slidably matched with the slide hole 510, the lock block 200 is provided with a jack 240, and the plug 910 can be inserted into the jack 240. The sliding groove 520 is arc-shaped, and the sliding rod 920 can slide in the sliding groove 520. When the handle 600 rotates to drive the sliding rod 920 to reciprocate in the circular arc-shaped sliding groove 520, the circular motion of the sliding rod 920 is converted into the reciprocating linear motion of the inserting rod 910 in the sliding hole 510, and the sliding rod 920 can drive the inserting rod 910 to reciprocate in the sliding hole 510 to insert into or withdraw from the inserting hole 240. When the sleeve rod 700 is matched with the groove 260 of the locking block 200 to be locked, the inserting rod 910 is simultaneously inserted into the jack 240, and the locking stability of the first locking mechanism 11 and the second locking mechanism 12 can be further improved through the matching of the inserting rod 910 and the jack 240. When the lever 700 stops engaging the recess 260 of the lock block 200 to unlock, the plunger 910 will simultaneously exit the receptacle 240.

When the first locking mechanism 11 and the second locking mechanism 12 are locked, in a first step, the blocking head 810 is pressed by hand, the rotating rod 820 drives the blocking head 810 to move to the first position, and then the handle 600 is rotated anticlockwise, at this time, the sliding rod 920 drives the inserting rod 910 to retract into the sliding hole 510. In the second step, the first lock base 100 and the second lock base 500 are mutually attached to be abutted, and the second connecting section 720 of the loop bar 700 is positioned at a position corresponding to the groove 260 on the lock block 200. Third, the handle 600 is rotated clockwise, the rotating rod 820 drives the blocking head 810 to move to the second position, the second connecting section 720 is matched with the groove 260, the sliding rod 920 drives the inserting rod 910 to extend out of the sliding hole 510 until the inserting rod is inserted into the inserting hole 240 of the locking block 200, at this time, the blocking head 810 can prevent the handle 600 from rotating anticlockwise, and the first locking mechanism 11 and the second locking mechanism 12 are locked.

When the first locking mechanism 11 and the second locking mechanism 12 are unlocked, the blocking head 810 is pressed by hand, the rotating rod 820 drives the blocking head 810 to move to the first position, and then the handle 600 is rotated anticlockwise, at this time, the sliding rod 920 drives the inserting rod 910 to retract into the sliding hole 510 until the inserting hole 240 is completely withdrawn, the second connecting section 720 is disengaged from the groove 260, and the first locking mechanism 11 and the second locking mechanism 12 are completely unlocked.

The invention also provides a display screen, which comprises the splicing device 10, and the splicing device 10 has higher locking stability, so that the installation accuracy of the display screen in the radian installation process can be greatly improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A splicing device, characterized in that it comprises a first locking mechanism and a second locking mechanism, wherein the first locking mechanism is used to be fixed on a first display module, and the second locking mechanism is used to be fixed on a second display module spliced with the first display module, wherein the first locking mechanism comprises:

First lock seat;

A locking block, slidably disposed on the first locking seat;

a first positioning assembly, disposed on the first lock seat, the first positioning assembly being capable of cooperating with the lock block to limit the lock block from sliding and moving in a direction perpendicular to the sliding direction; and

a second positioning assembly, disposed on the first lock seat, the second positioning assembly being capable of applying a force to the lock block to limit the vibration of the lock block along a direction perpendicular to the moving direction;

When the fixed position of the locking block on the first locking seat is changed and the locking block is locked with the second locking mechanism, the splicing angle between the first and second display modules is adjusted;

The first lock seat is provided with an installation cavity, and the locking block can be slidably matched with the installation cavity;

The second positioning assembly includes a second positioning column and a rotary handle, the second positioning column is threadedly connected to the first lock seat and can extend into the installation cavity, the rotary handle is connected to the portion of the second positioning column located outside the installation cavity, the first lock seat is provided with a plurality of second positioning holes at intervals, the second positioning column can be inserted into the second positioning hole; when the rotary handle is rotated to drive the second positioning column to rotate to increase the length of the second positioning column extending into the installation cavity, the second positioning column can press the locking block against the bottom wall of the installation cavity, and when the second positioning column cooperates with different second positioning holes, the fixed position of the locking block on the first lock seat can be changed;

The first locking mechanism also includes a guide member and an elastic member. A receiving hole is provided on the locking block. The elastic member is located in the receiving hole and is pressed between the guide member and the locking block. The guide member can slide relative to the receiving hole. When the second positioning column reduces the length of the second positioning column extending into the installation cavity to stop pressing the locking block, the elastic member pushes the locking block away from the bottom wall of the installation cavity.

2. The splicing device according to claim 1 is characterized in that the first positioning assembly includes a first positioning column, there are at least two first positioning columns and they are arranged on the bottom wall of the mounting cavity, and a plurality of first positioning holes are arranged at intervals on the locking block, and the first positioning column can be inserted into the first positioning hole; when the first positioning column cooperates with different first positioning holes, the fixed position of the locking block on the first lock seat can be changed.

3. The splicing device according to claim 1 is characterized in that a convex strip is provided on the side wall of the installation cavity, and a recessed groove is formed on the surface of the locking block to slide with the convex strip; when the locking block slides to the extreme position relative to the first locking seat, the convex strip conflicts with the side wall of the recessed groove so that the locking block is partially accommodated in the installation cavity.

4. The splicing device according to claim 1 is characterized in that a card column is provided on the side wall of the installation cavity, and a plurality of card holes are opened on the locking block, and the card holes are arranged at intervals on the surface of the locking block and can cooperate with the card column; when the locking block is adjusted to a fixed position on the first lock seat, the card column cooperates with the card holes corresponding to different fixed positions to prompt adjustment into place.

5. The splicing device according to claim 1 is characterized in that the bottom wall of the installation cavity is in the shape of an arc surface, and the locking block can slide along the extension direction of the bottom wall.

6. The splicing device according to claim 1, characterized in that the second locking mechanism comprises:

Second lock seat;

A handle, rotatably connected to the second lock seat;

A sleeve rod, fixedly connected to the handle, the sleeve rod being capable of cooperating with a groove formed on the locking block; and

A control member, rotatably connected to the second lock seat, the control member comprising a stopper capable of abutting against the handle;

Among them, when the control member rotates to drive the stopper to move to the first position, the stopper stops abutting against the handle, and the handle can rotate to drive the sleeve rod to disengage from the groove to unlock; when the control member rotates to drive the stopper to move to the second position, the stopper can abut against the handle, the handle stops rotating and the sleeve rod cooperates with the groove to lock.

7. The splicing device according to claim 6 is characterized in that the control member also includes a rotating rod rotatably connected to the second lock seat, the stop head is fixed to the end of the rotating rod, a through hole is opened on the handle, and the rotating rod is passed through the through hole; when the stop head moves to the first position and the handle rotates, the stop head can move relative to the handle in the through hole; when the stop head moves to the second position, the stop head abuts the handle to prevent the handle from rotating.

8. The splicing device according to claim 6 is characterized in that the second locking mechanism also includes an insert rod and a sliding rod connected to each other, the sliding rod is installed on the handle, and the second lock seat is provided with a sliding hole and a sliding groove that are connected to each other, the insert rod slides in cooperation with the sliding hole, the locking block is provided with a socket for the insert rod to be inserted therein, and the sliding rod can slide in the sliding groove; when the handle is rotated to drive the sliding rod to reciprocate in the sliding groove, the sliding rod drives the insert rod to reciprocate in the sliding hole to insert into or withdraw from the socket.

9. The splicing device according to claim 6, characterized in that two ends of the sleeve rod are respectively fixed on the handle, and a part of the first lock seat is inserted into the space surrounded by the sleeve rod.

10. The splicing device according to claim 9 is characterized in that the sleeve rod includes a first connecting section and a second connecting section arranged perpendicular to each other, there are two first connecting sections and they are parallel to each other, one end of the first connecting section is fixed on the handle, and the other end of the first connecting section is connected to the second connecting section.

11. The splicing device according to claim 6, characterized in that the handle comprises two support ears arranged at an interval, and the second lock seat comprises a boss, and the boss is located in the gap between the two support ears and is rotatably connected to the support ears.

12. A display screen, characterized by comprising the splicing device according to any one of claims 1 to 11.