CN210371607U

CN210371607U - Arc splicing device and display screen

Info

Publication number: CN210371607U
Application number: CN201920865684.XU
Authority: CN
Inventors: 傅德双; 谭安春; 杨俊丰; 汪生和; 何东
Original assignee: Liya Wisdom Display Shenzhen Co ltd
Current assignee: Liya Wisdom Display Shenzhen Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-21
Anticipated expiration: 2029-06-11

Abstract

The utility model relates to an arc splicing device. Including first locking mechanism and the second locking mechanism of mutually supporting, first locking mechanism includes: the first lock seat is provided with an installation cavity; the locking block is arranged in the mounting cavity in a sliding mode and connected with the second locking mechanism, and a plurality of positioning holes and a plurality of matching holes are formed in the two opposite surfaces of the locking block at intervals; the limiting column is connected with the first lock seat and can be matched with the positioning hole; and the abutting assembly comprises an abutting column and a sleeve sleeved on the abutting column, a first abutting curved surface which can be attached to the surface of the locking block is arranged on the sleeve, and the abutting column can be inserted into the matching hole. Because the first abutting curved surface has a larger contact area relative to the abutting column, the warping or shaking of the locking block caused by uneven stress can be effectively avoided, and the locking block is reliably fixed on the first locking seat finally, so that the locking stability of the arc splicing device is improved.

Description

Arc splicing device and display screen

Technical Field

The utility model relates to a show technical field, especially relate to a piece together arc device and contain this display screen of piecing together arc device.

Background

In the installation of arc display screen, need splice into certain contained angle with two adjacent display module assemblies, then adopt to splice two display module assemblies that become the contained angle and fix with the arc device again. However, traditional arc splicing device can lead to the change of the included angle between two spliced display modules, and then influences the installation accuracy of the whole arc display screen.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem make the stability of improving the arc device closure of piecing together.

An arc splicing device comprising a first locking mechanism and a second locking mechanism which are mutually matched, wherein the first locking mechanism comprises:

the first lock seat is provided with an installation cavity;

the locking block is arranged in the mounting cavity in a sliding mode and connected with the second locking mechanism, and a plurality of positioning holes and a plurality of matching holes are formed in the two opposite surfaces of the locking block at intervals;

the limiting column is connected with the first lock seat and can be matched with the positioning hole; and

the pressing component comprises a pressing column and a sleeve sleeved on the pressing column, a first pressing curved surface which can be attached to the surface of the locking block is arranged on the sleeve, and the pressing column can be inserted into the matching hole.

In one embodiment, the sleeve is slidably connected to the first lock housing.

In one embodiment, the sleeve includes a sleeve portion and a sliding portion, the sliding portion protrudes a set length relative to the surface of the sleeve portion along a direction perpendicular to the axial direction of the sleeve portion, and the first lock seat is provided with a limit groove in sliding fit with the sleeve portion.

In one embodiment, the first lock seat is provided with a first mounting hole and a second mounting hole which are communicated with each other, the abutting column is arranged in the first mounting hole in a penetrating mode, the cross section size of the second mounting hole is larger than that of the first mounting hole, a part of the side wall of the second mounting hole is sunken to form the limiting groove, and the bottom wall of the second mounting hole can abut against the sliding portion.

In one embodiment, the pressing component further comprises a knob, the knob is located outside the installation cavity and connected with the pressing column, and the pressing column is in threaded connection with the first lock seat.

In one embodiment, the sleeve is provided with a third mounting hole, and the pressing column penetrates through the third mounting hole and can rotate and slide relative to the third mounting hole.

In one embodiment, two bosses are arranged on the pressure post at intervals along the axial direction of the pressure post, the bosses protrude for a set length relative to the surface of the pressure post, the sleeve can slide between the two bosses along the pressure post, a fourth mounting hole communicated with the third mounting hole is further formed in the sleeve, the cross section size of the fourth mounting hole is larger than that of the third mounting hole, and the bottom wall of the fourth mounting hole can abut against one of the bosses.

In one embodiment, the first locking mechanism further includes a guide member and an elastic member, the guide member has a second abutting curved surface capable of being attached to the bottom wall of the mounting cavity, the locking block is provided with a receiving hole, the elastic member is located in the receiving hole and abuts against and is pressed between the guide member and the locking block, and the guide member can slide relative to the receiving hole.

In one embodiment, a protruding strip is arranged on the side wall of the installation cavity, a sinking groove in sliding fit with the protruding strip is formed on the surface of the locking block in a recessed mode, and the protruding strip can abut against the side wall of the sinking groove.

In one embodiment, a clamping column is arranged on the side wall of the mounting cavity, a plurality of clamping holes are formed in the locking block, and the clamping holes are arranged on the surface of the locking block at intervals and can be matched with the clamping column.

In one embodiment, the edge part of the surface of the lock block is recessed to form a sunken platform, and the first abutting curved surface can abut against the non-recessed middle part of the surface of the lock block.

In one embodiment, the second locking mechanism comprises:

a second lock seat;

the second lock seat is rotatably connected with the handle, and a through hole is formed in the handle;

the loop bar is fixedly connected with the handle and can be matched with a groove formed in the locking block; and

the stop head is connected with the end part of the rotating rod, and the rotating rod and the second lock seat can penetrate through the through hole;

when the blocking head moves to the first position and the handle rotates, the blocking head can move relative to the handle in the through hole, and the handle can rotate to drive the loop bar to be separated from the groove to be unlocked; when the stop head moves to the second position, the stop head is abutted to the handle to prevent the handle from rotating, and the loop bar is matched with the groove to be locked.

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

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

A display screen is characterized by comprising the arc splicing device.

The utility model discloses a technical effect of an embodiment is: through the cooperation of spacing post and locating hole and the cooperation of supporting the compression leg and the mating holes for the degree of freedom of the relative first lock seat of locking piece in space rectangular coordinate system is restricted, simultaneously, the first curved surface of supporting on the sleeve is laminated with the locking piece surface mutually, because the first curved surface of supporting to press has great area of contact relatively to supporting the compression leg, can effectively avoid the warping or rocking that the locking piece produced because of the atress is uneven, finally fix the locking piece reliably on first lock seat, thereby improve the stability of piecing together the arc device closure.

Drawings

Fig. 1 is a schematic view of an overall assembly structure of an arc splicing device according to an embodiment;

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

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

FIG. 4 is a schematic perspective view of the pressing assembly shown in FIG. 2;

FIG. 5 is a schematic cross-sectional view of FIG. 2;

FIG. 6 is a schematic view of the lock block of FIG. 2 with a portion broken away;

FIG. 7 is a schematic view of the partial perspective structure of FIG. 2 with the locking piece removed;

FIG. 8 is a schematic view of the locking block of FIG. 2 from a first perspective;

FIG. 9 is a schematic view of the locking block of FIG. 2 from a second perspective;

FIG. 10 is a schematic view of the overall assembly of the second locking mechanism of FIG. 1;

FIG. 11 is a schematic perspective cross-sectional view of FIG. 10;

fig. 12 is an exploded view of fig. 10.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The 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 "secured 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 as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1 to 3, an embodiment of the present invention provides an arc splicing apparatus 10 including a first locking mechanism 11 and a second locking mechanism 12, where the first locking mechanism 11 is used to fix on a first display module, the second locking mechanism 12 is used to fix on a second display module, and the first display module and the second display module can be spliced by locking between the first locking mechanism 11 and the second locking mechanism 12. The first locking mechanism 11 includes a first lock seat 100, a lock block 200, a spacing column 300 and a pressing component 400.

In some embodiments, the first lock base 100 is fixedly connected to the first display module. The locking piece 200 slides and sets up on first lock seat 100, for example, be provided with installation cavity 101 on first lock seat 100, installation cavity 101 is both ends opening and circumference confined structure, locking piece 200 and this installation cavity 101 sliding fit, the diapire of installation cavity 101 is the arc surface form, the surface (being the bottom surface) that locking piece 200 is close to the installation cavity 101 diapire is the arc surface form equally, when locking piece 200 locks on first lock seat 100, the diapire of installation cavity 101 is laminated with the lower surface of locking piece 200 each other, the extending direction (being first direction) slip of diapire can be followed to locking piece 200. Of course, a slide rail is disposed on the first lock seat 100, and the lock block 200 may be slidably engaged with the slide rail.

Referring to fig. 2, 7 and 9, the bottom surface of the locking block 200 is provided with a plurality of positioning holes 220, the plurality of positioning holes 220 are arranged in two rows on the bottom surface along the extending direction of the bottom surface, and the positioning holes 220 in the same row are uniformly spaced. The number of the limiting columns 300 may be two, and the limiting columns 300 are connected with the first lock holder 100, for example, the limiting columns 300 are connected with the bottom wall of the installation cavity 101. Each row of the positioning holes 220 corresponds to one of the positioning posts 300, and after the two positioning posts 300 are respectively inserted into the positioning holes 220, the sliding of the lock block 200 along the first direction and the movement of the lock block in the second direction perpendicular to the first direction are simultaneously limited by the limiting action of the positioning holes 220, in a colloquial manner, the front-back sliding and the left-right moving of the lock block 200 are limited. In the process of adjusting the splicing angle of the first display module and the second display module, the limiting column 300 can be matched with different positioning holes 220, so that the fixing position of the locking block 200 on the first lock base 100 can be changed. In fact, the engagement between the position-limiting post 300 and each positioning hole 220 corresponds to a fixed position of the lock block 200, and each fixed position of the lock block 200 corresponds to a splicing angle between the first display module and the second display module, for example, when the number of the positioning holes 220 in a row is five, the fixed positions of the lock block 200 on the first lock seat 100 are five, and 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 °.

A plurality of fitting holes 210 are formed in the top surface of the locking piece 200, the fitting holes 210 are arranged in a row along the extending direction (first direction) of the top surface, and the fitting holes 210 are uniformly spaced.

Referring to fig. 3 to 7, the pressing assembly 400 includes a pressing column 410, a sleeve 420 and a knob 430, the pressing column 410 may be cylindrical, the sleeve 420 includes a socket 421 and a sliding portion 422, the socket 421 may be substantially disc-shaped, the sliding portion 422 is disposed on a side surface of the socket 421, and the sliding portion 422 protrudes a set length relative to a surface of the socket 421 along a direction perpendicular to an axial direction of the socket 421 (i.e., a radial direction of the socket 421). First mounting hole 130 and second mounting hole 140 that communicate each other have been seted up on first lock holder 100, first mounting hole 130 communicates the external world, second mounting hole 140 communicates installation cavity 101, the cross sectional dimension of second mounting hole 140 is greater than the cross sectional dimension of first mounting hole 130, in other words, first mounting hole 130 and second mounting hole 140 form a step hole jointly, support and press post 410 to wear to establish in first mounting hole 130, for example, set up the internal thread on first mounting hole 130, support and press and set up the external screw thread on the post 410, through internal thread and external screw thread cooperation, in order to realize supporting and press post 410 and first lock holder 100 threaded connection, knob 430 is located the tip of supporting and pressing post 410 and is located outside installation cavity 101, through to knob 430 time effort, can drive and support and press post 410 and rotate relative first lock holder 100. For example, when the knob 430 drives the pressing column 410 to rotate forward, the length of the pressing column 410 extending into the installation cavity 101 is longer until the pressing column is inserted into the matching hole 210; when the knob 430 drives the pressing column 410 to rotate reversely, the length of the pressing column 410 extending into the installation cavity 101 is shorter until the pressing column exits from the matching hole 210.

The first abutting curved surface 423 is arranged on the sleeving part 421 and the sliding part 422, the shape of the first abutting curved surface 423 can be matched with the top surface of the lock block 200, when the abutting column 410 is inserted into the matching hole 210, the first abutting curved surface 423 is just completely attached to the top surface of the lock block 200, at this time, the first abutting curved surface 423 of the sleeve 420 exerts abutting force on the lock block 200, and the abutting column 410 located in the matching hole 210 also exerts abutting force on the lock block 200, and in addition to the matching effect of the limiting column 300 and the positioning hole 220, the vibration of the lock block 200 in a third direction intersecting the first direction and the second direction is limited, in a popular way, the lock block 200 cannot vibrate up and down relative to the first lock seat 100, and the first direction, the second direction and the third direction can be directions pointed by three coordinate axes in a spatial rectangular coordinate system. Because the first abutting curved surface 423 applies abutting force to the locking block 200, the first abutting curved surface 423 has a larger contact area with respect to the abutting column 410, so that warping or shaking of the locking block 200 caused by uneven stress when the abutting column 410 abuts alone is avoided, and vibration of the locking block 200 can be more reliably limited.

Therefore, through the combined action of the limiting column 300, the pressing column 410 and the first pressing curved surface 423, after the locking block 200 is fixed on the first lock seat 100, the movement of the locking block 200 along the first, second and third directions is completely limited, that is, the front-back sliding, left-right moving and up-down vibration of the locking block 200 are limited, so that the shaking or vibration of the locking block 200 relative to the first lock seat 100 is eliminated, and the stability and reliability of the fixation of the locking block 200 are improved. When the locking block 200 is completely fixed and locked with the second locking mechanism 12, the splicing included angle between the first display module and the second display module cannot be changed due to the shaking or vibration of the locking block 200, so that the locking stability of the arc splicing device 10 is improved, and the splicing precision between the first display module and the second display module is further ensured.

A portion of the sidewall of the second mounting hole 140 is recessed to form a limiting groove 150, and the limiting groove 150 is slidably engaged with the sliding portion 422, so that on one hand, due to the action of the limiting groove 150, the whole sleeve 420 can only slide relative to the first lock housing 100, thereby limiting the rotation of the sleeve 420 relative to the first lock housing 100. On the other hand, when the pressing column 410 drives the sleeve 420 to be away from the mating hole 210, the sliding portion 422 slides upwards in the limiting groove 150, due to the limiting effect of the bottom wall 141 of the second mounting hole 140, the sliding portion 422 abuts against the bottom wall 141 of the second mounting hole 140, so that the sliding portion 422 is limited to continue sliding upwards, the whole pressing assembly 400 is prevented from being separated from the first lock seat 100, the pressing assembly 400 is always located on the first lock seat 100, in the transportation and storage processes, the pressing assembly 400 is prevented from being separated from the first lock seat 100 and being lost, and the convenience in use of the subsequent whole arc splicing device 10 is improved.

In some embodiments, the edge portion of the top surface of the locking block 200 is recessed to form the sunken platform 282, for example, the two long edges of the top surface are recessed to form the sunken platforms 282, the non-recessed middle portion of the top surface of the locking block 200 forms a protrusion 211 with respect to the sunken platform 282, and the first curved pressing surface 423 of the sleeve 420 presses against the protrusion 211. Because the edge portion of the top surface is recessed to form the sunken platform 282, only the upper surface of the protrusion 211 is in contact with the top wall of the installation cavity 101 in the process that the lock block 200 slides in the installation cavity 101 to adjust the fixing position, so that the weight of the lock block 200 and the contact area between the lock block 200 and the first lock seat 100 are reduced, the friction force between the lock block 200 and the first lock seat 100 is reduced, the lock block 200 can slide in the installation cavity 101 quickly, the fixing position adjusting efficiency of the lock block 200 is improved, and the splicing efficiency between the first display module and the second display module is improved.

In some embodiments, the sleeve portion 421 of the sleeve 420 is provided with a third mounting hole 440 and a third mounting hole 440 that are communicated with each other, the cross-sectional dimension of the fourth mounting hole 450 is greater than the cross-sectional dimension of the third mounting hole 440, that is, the third mounting hole 440 and the third mounting hole 440 together form a stepped hole, the pressing column 410 is inserted into the third mounting hole 440, and the pressing column 410 can rotate and slide relative to the third mounting hole 440. Two bosses 411 are arranged on the abutting column 410, the two bosses 411 are arranged at intervals along the axial direction of the abutting column 410, the bosses 411 protrude for a set length relative to the side surface of the abutting column 410, and the sleeving part 421 can slide between the two bosses 411 along the abutting column 410. When the sleeve 420 slides upward relative to the abutment post 410, the surface of the sleeve 420 can abut one of the bosses 411 (referred to as an upper boss) to limit the limit distance that the sleeve 420 slides upward; when the sleeve 420 slides downward relative to the pressing column 410, the bottom wall 451 of the fourth mounting hole 450 can abut against another boss 411 (referred to as a lower boss) to limit the limit distance for the sleeve 420 to slide downward, so that the sleeve 420 can only slide within the range defined by the two bosses 411, and the sleeve 420 cannot be separated from the pressing column 410 at all times.

The first locking mechanism 11 further includes a guide 280 and an elastic member 290, the guide 280 may be in a block shape, the guide 280 has a second pressing curved surface 281, the shape of the second pressing curved surface 281 is capable of adapting to the bottom wall of the installation cavity 101, the elastic member 290 may be a spring, and the number of the springs may be two or more. The bottom surface of the locking piece 200 is concavely formed with a containing hole 201, the elastic piece 290 is positioned in the containing hole 201 and is pressed between the guide piece 280 and the locking piece 200, and the guide piece 280 can slide relative to the containing hole 201. When the pressing column 410 presses and fixes the locking block 200, the guiding member 280 is completely accommodated in the accommodating hole 201, and at this time, the second pressing curved surface 281 is attached to the bottom wall of the mounting cavity 101, and the elastic member 290 stores energy. When the pressing column 410 stops pressing the lock block 200, the elastic member 290 releases energy, the second pressing curved surface 281 of the guiding member 280 still abuts against the bottom wall of the mounting cavity 101, and the elastic member 290 pushes the lock block 200 to move in a direction (upward) away from the bottom wall of the mounting cavity 101. Under the combined action of the guiding member 280 and the elastic member 290, when the pressing column 410 stops pressing the locking block 200, the locking block 200 can automatically move upward, so that the position-limiting column 300 is separated from the positioning hole 220, and the fixing position of the locking block 200 relative to the first lock seat 100 can be smoothly adjusted subsequently.

Because the second abutting curved surface 281 which can be attached to the bottom wall of the installation cavity 101 is arranged on the guide member 280, the lock block 200 is prevented from warping due to uneven stress, and the stability of fixing the lock block 200 is improved. Meanwhile, when the pressing column 410 stops pressing the lock block 200, the second pressing curved surface 281 has a larger contact area with the bottom wall of the installation cavity 101, so that the lock block 200 can move upward quickly along a specific direction to be unlocked, and the lock block 200 is prevented from shaking in the upward movement process to collide with the first lock seat 100.

In some embodiments, a protruding strip 110 is disposed on one of the side walls of the mounting cavity 101, a sinking groove 230 is concavely formed on one of the side surfaces of the lock block 200, the sinking groove 230 can extend along the first direction, the protruding strip 110 has a sliding fit with the sinking groove 230, when the lock block 200 slides forward relative to the first lock base 100 along the first direction to the limit position, the protruding strip 110 abuts against the side wall of the sinking groove 230, the protruding strip 110 blocks the lock block 200 from sliding forward, so as to prevent the lock block 200 from being completely withdrawn from the mounting cavity 101, and thus, a part of the lock block 200 is continuously accommodated in the mounting cavity 101. Of course, still be provided with baffle 270 on the locking piece 200, when the locking piece 200 slided to extreme position along first direction backward relative first lock seat 100, baffle 270 contradicts with first lock seat 100, baffle 270 prevents that locking piece 200 continues to slide backward, can avoid locking piece 200 to take out from installation cavity 101 entirely equally, consequently, through the effect of sand grip 110 and baffle 270, make locking piece 200 can cooperate with installation cavity 101 all the time, locking piece 200 is located first lock seat 100 all the time promptly, in the in-process of transportation and storage, avoid locking piece 200 to break away from first lock seat 100, improve the convenience that follow-up whole arc device 10 was used.

The same side wall of installation cavity 101 and that set up sand grip 110 can be provided with card post 120, has seted up a plurality of card holes 240 on the locking piece 200 and on the same side surface that sets up heavy groove 230, and card hole 240 is along first direction interval arrangement, and card post 120 can cooperate with card hole 240. In the process of adjusting the fixed position of the lock block 200 on the first lock seat 100, the latching posts 120 can be engaged with the latching holes 240 with different fixed positions, and when the two are engaged, a clicking feeling is generated, so that the prompt of adjusting the fixed position of the lock block 200 in place is provided.

Referring to fig. 1 to 3 and 10 to 12, the second locking mechanism 12 includes a second lock base 500, a handle 600, a sleeve 700, a rotating rod 820 and a stopper 810. The second lock holder 500 is used to be fixed on the second display module, and the second lock holder 500 includes a protrusion 530. The handle 600 is rotatably connected to the second lock holder 500, the handle 600 includes two support lugs 620 arranged at an interval, the protrusion 530 is located in a gap between the two support lugs 620, and the protrusion 530 is rotatably connected to the support 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 holder 100 is arranged in the space surrounded by the loop bar 700. For example, the loop bar 700 may include a first connection section 710 and a second connection section 720 that are perpendicular to each other, two first connection sections 710 are parallel to each other, one end of each first connection section 710 is fixed on the handle 600, and the other end of each first connection section 710 is connected to the first connection section 710, at this time, the first connection section 710 and the second connection section 720 are connected to form a loop bar 700 with a "door" -shaped structure, and of course, the loop bar 700 may also be a curved arc-shaped structure, etc. The locking piece 200 is formed with a groove 260, and when the second connecting section 720 of the loop bar 700 is engaged with the groove 260, the first locking mechanism 11 and the second locking mechanism 12 are locked with each other. When the second connection section 720 of the lever 700 stops engaging with the groove 260, the first locking mechanism 11 and the second locking mechanism 12 are unlocked from each other.

One end of the rotating rod 820 is rotatably connected with the second lock seat 500 through the second rotating shaft 830, the stopper 810 is disposed at the other end of the rotating rod 820, the handle 600 is further provided with a through hole 610, and the rotating rod 820 is inserted into the through hole 610. When the rotating rod 820 rotates to drive the stopper 810 to move to the first position, the stopper 810 stops abutting against the handle 600, at the moment, the handle 600 can be rotated to drive the loop bar 700 to be separated from the groove 260 to realize unlocking, in the process of rotating the handle 600, the stopper 810 can move relative to the handle 600 in the through hole 610, and the through hole 610 provides a clearance space for the stopper 810, so that the stopper 810 is effectively prevented from rotating to form interference on the handle 600. When the rotating rod 820 rotates to drive the stopper 810 to move to the second position, the stopper 810 abuts against the handle 600, the stopper 810 prevents the handle 600 from rotating, and at this time, the sleeve 700 is matched with the groove 260 to realize locking.

In some embodiments, the second locking mechanism 12 further includes an insertion rod 910 and a sliding rod 920 connected to each other, the sliding rod 920 is mounted on the support lug 620 of the handle 600, the second lock seat 500 is formed with a sliding hole 510 and a sliding slot 520 communicating with each other, the sliding hole 510 can be a cylindrical hole, the insertion rod 910 is slidably engaged with the sliding hole 510, the lock block 200 is formed with an insertion hole 250, and the insertion rod 910 can be inserted into the insertion hole 250. 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 250. When the sleeve rod 700 is matched with the groove 260 of the locking block 200 for locking, the inserting rod 910 is inserted into the inserting hole 250 at the same time, and the stability of locking the first locking mechanism 11 with the second locking mechanism 12 can be further improved through the matching of the inserting rod 910 with the inserting hole 250. When the stem 700 stops engaging the groove 260 of the lock block 200 to unlock, the plunger 910 will simultaneously exit the jack 250.

When the first locking mechanism 11 is locked with the second locking mechanism 12, in a first step, the stopper 810 is pressed by hand, the rotating rod 820 drives the stopper 810 to move to a first position, and then the handle 600 is rotated counterclockwise, at this time, the sliding rod 920 drives the inserting rod 910 to retract into the sliding hole 510. Second, the first lock seat 100 and the second lock seat 500 are attached to each other and abutted against each other, and the second connection section 720 of the loop bar 700 is located at a position corresponding to the groove 260 on the lock block 200. And thirdly, rotating the handle 600 clockwise, rotating the rod 820 to drive the stopper 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 250 of the locking block 200, at this time, the stopper 810 can prevent the handle 600 from rotating counterclockwise, and the first locking mechanism 11 and the second locking mechanism 12 are locked completely.

When the first locking mechanism 11 and the second locking mechanism 12 are unlocked, first, the stopper 810 is pressed by hand, and the rotating rod 820 drives the stopper 810 to move to the first position; then, the handle 600 is rotated counterclockwise, at this time, the sliding rod 920 drives the insertion rod 910 to retract into the sliding hole 510 until completely exiting the insertion hole 250, the second connection section 720 is disengaged from the groove 260, and the first locking mechanism 11 and the second locking mechanism 12 are unlocked completely.

The utility model also provides a display screen, this display screen include foretell piece together arc device 10, because this piece together arc device 10 has higher closure stability, can improve the installation accuracy when the display screen is the radian installation by a wide margin.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An arc splicing device, comprising a first locking mechanism and a second locking mechanism which are matched with each other, wherein the first locking mechanism comprises:

the first lock seat is provided with an installation cavity;

2. The arc splicing device of claim 1, wherein the sleeve is slidably connected with the first lock holder.

3. The arc splicing device according to claim 1, wherein the sleeve comprises a sleeve joint part and a sliding part, the sliding part protrudes for a set length relative to the surface of the sleeve joint part along a direction perpendicular to the axial direction of the sleeve joint part, and a limit groove in sliding fit with the sleeve joint part is formed in the first lock seat.

4. The arc splicing device according to claim 3, wherein the first lock seat is provided with a first mounting hole and a second mounting hole which are communicated with each other, the abutting column is arranged in the first mounting hole in a penetrating manner, the cross section size of the second mounting hole is larger than that of the first mounting hole, a part of the side wall of the second mounting hole is recessed to form the limiting groove, and the bottom wall of the second mounting hole can abut against the sliding part.

5. The arc splicing device according to claim 1, wherein the abutting assembly further comprises a knob, the knob is located outside the installation cavity and connected with the abutting column, and the abutting column is in threaded connection with the first lock seat.

6. The arc splicing device according to claim 1, wherein a third mounting hole is formed in the sleeve, and the pressing column penetrates through the third mounting hole and can rotate and slide relative to the third mounting hole.

7. The arc splicing device according to claim 6, wherein two bosses are arranged on the pressure post at intervals along the axial direction of the pressure post, the bosses protrude out of the surface of the pressure post by a set length, the sleeve can slide between the two bosses along the pressure post, a fourth mounting hole communicated with the third mounting hole is further formed in the sleeve, the cross-sectional dimension of the fourth mounting hole is larger than that of the third mounting hole, and the bottom wall of the fourth mounting hole can abut against one of the bosses.

8. The arc splicing device according to claim 1, wherein the first locking mechanism further comprises a guide member and an elastic member, the guide member is provided with a second abutting curved surface which can be attached to the bottom wall of the installation cavity, the locking block is provided with a containing hole, the elastic member is located in the containing hole and abuts against and is pressed between the guide member and the locking block, and the guide member can slide relative to the containing hole.

9. An arc splicing device according to claim 1, wherein a protruding strip is arranged on the side wall of the installation cavity, a sinking groove in sliding fit with the protruding strip is formed in the surface of the locking block in a recessed mode, and the protruding strip can abut against the side wall of the sinking groove.

10. The arc splicing device according to claim 1, wherein a clamping column is arranged on the side wall of the mounting cavity, a plurality of clamping holes are formed in the locking block, and the clamping holes are arranged on the surface of the locking block at intervals and can be matched with the clamping column.

11. The arc splicing device according to claim 1, wherein an edge portion of the surface of the lock block is recessed to form a sunken platform, and the first abutting curved surface can abut against an un-recessed middle portion of the surface of the lock block.

12. The arc splicing apparatus of claim 1, wherein the second locking mechanism comprises:

a second lock seat;

13. The arc splicing device according to claim 12, wherein 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, the second lock seat is provided with a sliding hole and a sliding groove which are communicated with each other, the inserting rod is in sliding fit with the sliding hole, the lock block is provided with a jack in which the inserting rod can be inserted, and the sliding rod can slide in the sliding groove; when the handle rotates to drive the sliding rod to reciprocate in the sliding groove, the sliding rod drives the inserted rod to reciprocate in the sliding hole to be inserted into or withdrawn from the inserting hole.

14. The arc splicing device according to claim 12, wherein the handle comprises two support lugs arranged at intervals, and the second lock seat comprises a boss which is positioned in a gap between the two support lugs and is rotatably connected with the support lugs.

15. A display screen comprising the arc splicing apparatus of any one of claims 1 to 14.