WO2014040355A1

WO2014040355A1 - Apparatus for quickly splicing display screens

Info

Publication number: WO2014040355A1
Application number: PCT/CN2012/087419
Authority: WO
Inventors: 何进龙; 黄永忠; 王启权; 刘志辉; 吴振志; 沈毅; 吴涵渠
Original assignee: 深圳市奥拓电子股份有限公司
Priority date: 2012-09-12
Filing date: 2012-12-25
Publication date: 2014-03-20
Also published as: CN102855824A; CN102855824B

Abstract

Disclosed is an apparatus for quickly splicing display screens, the apparatus comprising a left assembly (2) and a right assembly (3) lockable relative to each other, wherein the left assembly (2) comprises a rotary fastening base (22), a rotary angle base (20) and a rotary locking mechanism, the rotary angle base (20) being able to lock the right assembly (3), and the rotary angle base (20) also being rotatably connected to the rotary fastening base (22). When the rotary locking mechanism is unlocked, the rotary angle base (20) and the rotary fastening base (22) are rotatable with respect to each other. When the rotary locking mechanism is locked, the rotary angle base (20) and the rotary fastening base (22) are fixedly connected to each other. The apparatus for quickly splicing display screens can not only splice arc-shaped display screens quickly, but can also achieve accurate splicing and locking. Main parts of the splicing apparatus can be manufactured by utilizing a die casting process cooperating with a machining process, the manufacturing precision thereof can be within a range of 0.02 mm, and the total error of the display screens after being spliced can be controlled within a range of 0.1 mm, so the splicing precision is increased by an order of magnitude.

Description

Display quick splicing device

TECHNICAL FIELD The present invention relates to LED display technology, and in particular to a display quick splicing device for display screen splicing. Background technique

LED display screens are generally formed by splicing multiple display units or display unit cabinets. With the development of technology and the improvement of display precision, it is required to be fast and convenient, and also require higher precision, which will affect the display quality. The existing display screen splicing generally relies directly on the shape of the box, and is limited by the accuracy of the current sheet metal processing equipment, as well as the sheet metal processing technology and other factors, it is difficult to ensure that the box is assembled in the horizontal direction (X direction). In the vertical direction (Y direction), the splicing pitch in the front-rear direction (Z-direction) is ideal, and the assembly error is usually greater than 1 mm. Especially for the display screen of high-density pixels, the assembly error of the box will directly lead to obvious bright or dark lines at the position of the splicing line of the LED display, resulting in poor display effect. Moreover, the screen shape of the LED display screen is more diversified. In order to meet the requirements of the market, the shape of the display screen body is no longer just a flat screen, and the display screen needs to be spliced into various shapes such as an outer arc, an inner arc and a wave shape. In summary, the prior art cannot meet the need for a high-density display to quickly and accurately assemble a curved screen, and thus needs improvement. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a quick splicing device for quickly splicing a curved screen, which solves the problem that the display screen cannot be conveniently and accurately spliced with a curved screen. In order to solve the above technical problem, the present invention adopts the following technical solutions: A quick splicing device for a display screen, comprising a left and right assembly that can be interlocked with each other, the left assembly comprising a rotating fixed seat, a rotating angle seat and a rotation locking mechanism; the rotation angle seat is lockable with the right assembly, and the rotation angle seat is further rotatably connected with the rotation fixing seat, and when the rotation locking mechanism is released, the rotation angle seat and the rotation fixing seat The rotation angle seat is fixedly coupled to the rotation fixing seat when the rotation locking mechanism is locked. In a preferred embodiment, the rotation angle seat is provided with an arcuate flange, and the rotation fixing seat is correspondingly provided with an arcuate guide groove, and the arcuate flange is slidable in the arcuate guide groove. Thereby, the rotary mount and the rotary angle seat are relatively rotatable. In a further preferred embodiment, the rotary locking mechanism includes: a locking platen and a locking bolt; the locking platen is slidably disposed on the rotating fixed seat; the locking bolt passes through the locking platen and rotates The fixing seat is screwed, and the locking bolt can drive the locking platen to be close to the rotating fixing seat, and the arcuate flange is pressed into the arcuate guiding groove, so that the rotating fixing seat and the rotating angle seat cannot rotate relative to each other. In a further preferred technical solution, the rotating fixing seat is provided with two guiding columns, and the locking pressing plate is disposed at the On the guide post, the two guide posts are slidably disposed on the rotating base. In still another preferred technical solution, the locking pressing plate is provided with a pressing inclined surface and a tooth-shaped structure, and the rotating angle seat is correspondingly provided with a pressing inclined surface; the locking locking plate can be driven to slide along the guiding column by screwing the locking bolt Close to the rotation angle seat, until the pressing slope on the locking platen is in close contact with the pressing slope on the rotation angle seat, the pressing slope of the locking platen is axially compressed and the pressing slope of the rotation angle seat is radially pressed. , the locking pressing plate is axially pressed against the rotating angle seat, and the radial matching with the rotating fixing seat, the locking pressing plate and the rotating fixing seat radially sandwich the curved tail portion of the rotating angle seat, and the toothed structure on the locking pressing plate is locked The pressing plate axially presses the rotation angle seat while locking the rotation angle seat, so that the rotation angle seat is fixedly connected with the rotation fixing seat. In a preferred technical solution, the left assembly further includes a rotation driving mechanism; the rotation driving mechanism is disposed between the rotation angle seat and the rotation fixing seat, and the rotation driving mechanism can drive the rotation angle seat relative to a certain range Rotate the mount to rotate. In a further preferred embodiment, the rotary drive mechanism is a rack and pinion mechanism; and includes an intermeshing drive gear and a curved rack; the curved rack is fixedly disposed on the rotary angle seat, and the drive gear is correspondingly Rotatingly disposed on the rotating fixed seat, the rotating angle seat is rotatable relative to the rotating fixed seat by the driving gear; the driving gear comprises a gear shaft, a gear and a thumb nut; the gear is fixedly disposed at one end of the gear shaft The other end of the gear shaft is fixedly connected to the thumb nut after passing through the rotating base. In a further preferred embodiment, the thumb nut has a D-shaped hole, and a cross section of one end of the gear shaft has a corresponding D shape, and another fixing screw is threadedly connected to the gear shaft through the thumb nut perpendicular to the axis of the gear shaft. In a preferred technical solution, the left assembly further includes an angle indicating mechanism for indicating a relative rotation angle of the rotating fixed seat and the rotating angle seat, and the angle indicating mechanism is disposed between the rotating fixed seat and the rotating angle seat. In a further preferred embodiment, the angle indicating mechanism includes an angle scale and an angle pointer plate respectively disposed on the rotating fixed seat and the rotating angle seat respectively. In a preferred technical solution, the left assembly further includes a lock reset mechanism that automatically releases the rotation angle seat and the rotation fixed seat to a relative rotation state when the rotary locking mechanism is released, the lock reset The mechanism is disposed between the rotating angle seat and the rotating mount. In a further preferred embodiment, the locking and resetting mechanism is an elastic returning member disposed between the rotating fixed seat and the rotating angle seat; when the rotary locking mechanism is locked, the elastic returning member is compressed on the rotating fixed seat and Rotate between angle seats. In a still further preferred embodiment, the elastic returning member is a rubber spring made of elastic rubber. In a preferred technical solution, the left assembly further includes a rotation limiting mechanism that limits the relative rotation of the rotating fixed seat and the rotating angle seat to a certain range, and the rotating limiting mechanism is disposed on the rotating fixed seat and the rotating angle seat. between. In a further preferred embodiment, the rotation limiting mechanism includes a limiting screw and a limiting protrusion respectively disposed on the rotating fixed seat and the rotating angle seat; when the rotating fixed seat is rotated relative to the rotating angle seat to the limit position, The limit screw contacts the limit projection, thereby limiting the extreme position of rotation of the rotary mount relative to the rotational angle seat. In a preferred technical solution, the rotation angle seat has an X-left positioning surface, and a positioning column hole is formed on the X-left positioning surface; the right assembly includes a right seat body, a wrench, a hook, and a positioning column; The right seat body has an X-right positioning surface corresponding to the X-left positioning surface, and the X-right positioning surface is provided with a positioning post receiving hole, a position of the positioning post receiving hole and the positioning post hole Corresponding; one end of the wrench is rotatably connected to the right seat; and the positioning post is slidably disposed in the positioning post receiving hole; the pull hook and the positioning post are rotatably connected with the middle of the wrench; The wrench can cause the hook to hook the left assembly, and at the same time the positioning post projects into the positioning post hole. In a further preferred technical solution, the display quick splicing device further includes a safety mechanism disposed between the moving component and the stationary component of the right assembly; the moving component includes the wrench, the hook, and the positioning a column; the stationary member includes a right seat. In a further preferred technical solution, the safety mechanism includes a safety buckle, a safety buckle resetting member and a safety buckle rotating shaft; the safety buckle is rotatably disposed on the right seat body through the safety buckle rotating shaft; a return spring disposed on the safety buckle shaft and elastically acting between the safety buckle and the right seat; the safety buckle can lock the moving component and hold the lock under the action of the safety buckle resetting member Buckle status. In a further preferred embodiment, the safety buckle has a hook, and the wrench is correspondingly provided with a hook hole for accommodating the hook; the safety buckle can fasten the wrench by the hook. In still another preferred embodiment, the hook has a guiding slope. In still another preferred embodiment, the safety buckle has a pressing surface for a pressing operation; pressing the pressing surface causes the safety buckle to rotate around the safety buckle rotating shaft against the action of the return spring to disengage from the wrench. In a preferred technical solution, the right assembly further includes a positioning post connecting shaft; the positioning post includes a positioning post, and a connecting piece fixedly connected with the positioning post; the positioning post passes through the connecting piece and the positioning post The connecting shaft is rotatably connected with the wrench such that the wrench is pulled to hook the hook to the left assembly while the positioning post protrudes into the positioning post hole. In a further preferred technical solution, the front end of the positioning cylinder has a tapered surface that plays a positive role; the connecting piece is provided with a waist hole; the positioning column connecting shaft passes the positioning hole and the wrench through the waist hole Turn the connection. In a preferred technical solution, the right assembly further includes an open state retaining member that maintains the right assembly in a maximum open state when the hook is not hooked to the left assembly, and the open state retaining member is disposed in the motion of the right assembly. Between the component and the stationary component; the moving component comprises the wrench, the hook and the positioning post; the stationary component comprises a right seat. In a further preferred embodiment, the open state retaining member is stretched between the positioning post and the right seat, and the positioning post is pulled into the right seat to ensure that the positioning post does not protrude when in the non-locked state. X pulls the spring to the right positioning surface. In a preferred technical solution, the display quick splicing device further includes a guiding mechanism; the left and right sides of the right seat have side walls, the guiding mechanism includes a guiding slot formed on the side wall, and is fixedly disposed on the hook Guide pins on both sides; the guide pin is located in the guide groove and is slidable along the guide groove. In a further preferred embodiment, the guide pin is integrally formed with the hook, and the upper edge of the guiding groove is opened and convenient. The guide pin is mounted to the mounting notch of the guide groove. In a further preferred embodiment, the left assembly further includes a lock post, the lock post is fixedly disposed on the rotation angle seat; and the hook hooks the left assembly by hooking the lock cylinder. The invention has the beneficial effects that: the quick splicing device for the display screen using the technical scheme of the invention can quickly splicing the display screen without using any tools, and the structure design of the contact parts can be transferred by innovation, and the adjacent display can be prevented. The screen units are damaged by extrusion; more importantly, the main parts can be manufactured by die-casting process and machining process, and the manufacturing precision can reach 0.02mm, and the total error after assembly can be controlled at 0.1mm. Within the range, the stitching accuracy is increased by an order of magnitude, enabling precise assembly and locking. The structure of the invention intelligently transfers the structural design of the contact parts, and through the precision machining and processing control of the assembled contact parts, can achieve a very ideal assembly effect, usually the assembly error can be controlled within the range of 0.1 mm, The stitching accuracy is increased by an order of magnitude. At the same time, it can prevent the display unit between the cabinets from being damaged due to the extrusion, and can be adapted to the display application of high-density pixels. The invention is further described in detail below with reference to the accompanying drawings. DRAWINGS

1 is a view showing a state of use of a quick splicing device for a display screen according to an embodiment of the present invention;

2 is a perspective view showing a three-dimensional structure of a display quick-splicing device in a latching state according to an embodiment of the present invention; FIG. 3 is a perspective view showing a three-dimensional structure of a display quick-splicing device in an unlocked state according to an embodiment of the present invention; 1 is a cross-sectional view of a central axis surface of a display quick-splicing device in an unlocked state; FIG. 5 is a cross-sectional view of a central axis surface of a display quick-splicing device in a locked state according to an embodiment of the present invention;

6 is a schematic perspective structural view of a left assembly in a specific embodiment of the present invention;

7 is another schematic perspective structural view of a left assembly in a specific embodiment of the present invention;

Figure 8 is an exploded view of the left assembly in a specific embodiment of the present invention;

9 is a schematic perspective structural view of a rotary angle seat according to an embodiment of the present invention;

FIG. 10 is another schematic perspective structural view of a rotating angle seat according to an embodiment of the present invention; FIG.

Figure 11 is a perspective view showing the three-dimensional structure of the rotary mount in the embodiment of the present invention;

Figure 12 is a perspective view showing the structure of the locking platen in the embodiment of the present invention;

Figure 13 is a perspective view showing the structure of a drive gear (without a thumb nut) according to an embodiment of the present invention;

Figure 14 is a perspective view showing the structure of the right assembly in the embodiment of the present invention;

Figure 15 is a perspective view showing the structure of the right seat in the embodiment of the present invention;

Figure 16 is a perspective view showing the structure of the hook in the embodiment of the present invention;

17 is a schematic perspective view of a wrench in a specific embodiment of the present invention;

18 is a schematic perspective view of a positioning post in a specific embodiment of the present invention;

19 is a schematic perspective view of a safety buckle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION The object of the present invention is to provide a scroll display that can be quickly assembled without any tools, and can achieve high The display screen with precision stitching effect is quickly spliced, and the quick splicing device of the display screen can be mass-produced, and is especially suitable for the assembly of high-density pixels and displays that need to be frequently disassembled. A display quick splicing device according to an embodiment of the present invention is used as shown in FIG. 1 , and is disposed between two display unit 1 (or display unit housing) for two adjacent display units. Quick fix and connection between 1. It can be seen from Fig. 1 that the display screen quick splicing device of the present embodiment can make the adjacent two display unit 1 have a certain angle, so that the curved screen can be spliced. As shown in FIGS. 2 to 5, the display quick splicing device includes a left assembly as shown in FIG. 6 and a right assembly as shown in FIG. After assembly, the left assembly 2 and the right assembly 3 are respectively fixedly connected with one display unit 1, and then the right assembly 3 is operated to make a lock with the left assembly 2, so that the two display units 1 can be joined together. . The state when the latch is not locked is shown in FIG. 3 and FIG. 5, and the state after the latch is as shown in FIG. 2 and FIG. Of course, according to the size of the display screen and other specific conditions, there may be two sets of display screen quick splicing devices between the two adjacent display screen units 1, or only one set of display quick splicing devices may be provided. It is also possible to set up two or more display quick splicing devices. The specific structure of the left assembly 2 is as shown in FIG. 6 , FIG. 7 and FIG. 8 , and includes: a rotating fixed seat 22 , a rotating angle seat 20 and a rotary locking mechanism; the rotating angle seat 20 is provided with a locking post 21 The lock cylinder 21 and the right assembly 3 are locked, and the rotation angle seat 20 is also rotatably connected to the rotation fixing seat 22. When the rotary locking mechanism is released, the rotation angle seat 20 and the rotation fixed The seat 22 is relatively rotatable, and the rotation angle seat 20 is fixedly coupled to the rotating base 22 when the rotary locking mechanism is locked. The specific structure of the rotation angle seat 20 is as shown in FIG. 9 and FIG. 10, and the front side has an X-left positioning surface 200, and the X-left positioning surface 200 is provided with a positioning post hole 201. Of course, the lock cylinder 21 can also be integrally formed with the rotation angle seat 20. At this time, it can be considered that the lock cylinder 21 is a part of the rotation angle seat 20, and substantially the same technical effect can be achieved, but separating the two is more advantageous for manufacturing. As shown in FIG. 9, the rotation angle seat 20 is provided with an arcuate flange 203. As shown in FIG. 11, the rotating fixing seat 22 is correspondingly provided with an arcuate guiding groove 227, and the arcuate flange 203 can slide in the arcuate guiding groove 227, so that the rotating fixing seat 22 and the rotation The angle seat 20 is relatively rotatable. As shown in FIG. 7 and FIG. 8, the rotary locking mechanism includes: a locking platen 23 and a locking bolt 26; the locking platen 23 is slidably disposed on the rotating base 22; the locking bolt 26 After being inserted through the locking platen 23, the rotary fixing seat 22 is screwed. Through the locking bolt 26, the locking pressing plate 23 can be driven close to the rotating fixing seat 22, and the curved flange 227 is pressed into the curved guiding groove 203. Therefore, the rotary mount 22 and the rotary angle seat 20 cannot be relatively rotated. As shown in FIG. 11 , in the embodiment, the rotating fixing base 22 is provided with two guiding columns 225 , and the locking pressing plate 23 is slidably disposed on the two guiding columns 225 ; The locking platen 23 is provided with a pressing slope 234 and a toothed structure 231. As shown in FIG. 10, a compression bevel 206 is disposed on the rotation angle seat 20. The operator can screw the locking bolt 26 to drive the locking platen 23 to slide along the guide post 225 near the angle of rotation seat 20 until the pressing ramp 234 on the locking platen 23 and the pressing ramp 206 on the angled seat 20 Adjacently, the pressing slope 234 of the locking platen 23 is axially compressed and radially presses the pressing slope 206 of the rotation angle seat 20, so that the locking platen 23 is axially pressed against the rotation angle seat 20, and is fixed radially and rotationally. When the seat 22 is engaged, the locking platen 23 and the rotating fixed seat 22 radially sandwich the curved tail portion of the rotating angle seat 20, and the locking platen 23 is locked. The toothed structure 231 locks the rotation angle seat 20 while the locking pressure plate 23 is axially pressed against the rotation angle seat 20, so that the locking mechanism fixedly connects the rotation angle seat 20 with the rotation fixing seat 22. The left assembly 2 further includes a rotation driving mechanism; the rotation driving mechanism is disposed between the rotation angle seat 20 and the rotation fixing seat 22, and the rotation driving mechanism can drive the rotation angle seat 20 relative to the rotation in a certain range. The seat 22 rotates. As shown in FIG. 8 in conjunction with FIG. 4 and FIG. 5, the rotary drive mechanism is a rack and pinion mechanism; and includes an intermeshing drive gear 27 and a curved rack 25; the curved rack 25 is fixedly disposed on the rotation angle seat 20. The drive gear 27 is correspondingly rotatably disposed on the rotary mount 22, and the rotary angle seat 20 can be rotated relative to the rotary mount 22 by the drive gear 27. As shown in FIG. 13, the drive gear 27 includes a gear shaft 271, a gear 270, and a thumb nut 28; the gear 270 is fixedly sleeved at one end of the gear shaft 271, and the other end of the gear shaft 271 extends through the rotary mount. 22 is fixedly coupled to the thumb nut 28. As shown in FIG. 8, the thumb nut 28 has a D-shaped hole 281, and the end of the gear shaft 271 is a corresponding D-shape, thus having a flat surface 272, and the flat surface 272 is provided with a threaded hole 273. After the thumb nut 28 is assembled to one end of the gear shaft 271, another fixing screw is perpendicular to the axis of the gear shaft 271, and penetrates the thumb nut 28 to be screwed with the threaded hole 273 of the gear shaft 271, thereby reliably fixing the thumb nut 28 to the gear. One end of the shaft 271. It is convenient for the operator to screw the thumb nut 28 with the finger, and the driving gear 27 drives the curved rack 25 to move, and finally drives the rotation angle seat 20 to rotate relative to the rotating base 22. In the present embodiment, as shown in FIG. 7 and FIG. 8 , the left assembly 2 further includes an angle indicating mechanism for indicating a relative rotation angle of the rotating fixed seat 22 and the rotating angle seat 20, and the angle indicating mechanism is disposed at the rotation. Between the fixing base 22 and the rotation angle seat 20, an angle pointer plate 24 and an angle scale table 205 respectively disposed on the rotation fixing seat 22 and the rotation angle seat 20 are included. The scale on the angle scale 205 pointed by the pointer on the angle pointer plate 24 is both the angle of rotation. Of course, the pointer on the angle pointer plate 24 can theoretically be directly formed on the rotary mount 22, but in order to facilitate the formation of the arcuate guide groove 227, an angle pointer plate 24 is separately fabricated and then fixed to the rotary mount by screws. On the 22nd, it can greatly reduce the manufacturing difficulty. The left assembly 2 further includes a lock reset mechanism that automatically releases the rotation angle seat 20 and the rotation mount 22 to a relatively rotatable state when the rotary locking mechanism is released, and the lock reset mechanism is disposed at The locking platen 23 and the rotating mount 22 are interposed. In the embodiment, the locking and resetting mechanism is an elastic returning member disposed between the rotating fixed seat and the locking pressing plate 23; when the rotary locking mechanism is locked, the elastic returning member is compressed on the rotating fixed seat 22 And between the locking platen 23. As can be seen in conjunction with FIG. 4 and FIG. 5, more specifically, the elastic returning member is a rubber spring 29 made of elastic rubber. As can be seen from Fig. 11, a rubber spring accommodating hole 226 is provided in the vicinity of the guide post 225, and the assembled rubber spring 29 is located in the rubber spring accommodating hole 226, and a part thereof protrudes from the rubber spring accommodating hole 226. After the locking pressing plate 23 is pressed by the locking bolt 26, the rubber spring 29 is compressed, and after the locking bolt 26 is released, the locking pressing plate 23 is disengaged from the rotation angle seat 20 by the rubber spring 29 returning to the shape. Of course, it is also possible to replace the rubber spring 29 with a common metal spring, and basically achieve the same technical effect. As shown in FIG. 8 and FIG. 11 together with FIG. 4 and FIG. 5, the left assembly further includes a rotation limiting mechanism for limiting relative rotation of the rotating fixed seat and the rotating angle seat within a certain range, and the rotating limiting mechanism is configured. Between the rotating mount 22 and the angle of rotation mount 20. A limit screw 291 disposed at the threaded hole 209 of the rotation angle seat 20, and a limit protrusion 224 disposed on the rotation mount 22 are included. When the rotary mount 22 is rotated to the extreme position relative to the rotation angle seat 20, the limit screw 291 is in contact with the limit projection 224, thereby limiting the limit of rotation of the rotary mount 22 relative to the rotation angle seat 20. Location. As shown in FIG. 14 and FIG. 5, the right assembly 3 includes: a right seat body 30, a wrench 31, a hook 32, a wrench shaft 34, a hook shaft 35, a positioning post 37, a positioning post connecting shaft 38, and the like. The specific structure of the right seat body 30 is as shown in FIG. 15 , and the front side thereof has an X-right positioning surface 300 corresponding to the X-left positioning surface 200 , and the X-right positioning surface 300 is opened for the housing. The positioning post of the positioning post 37 accommodates the hole 303. The position of the positioning post accommodating hole 303 corresponds to the positioning post hole 201. The left and right sides of the right seat body 30 have a side wall 301, and the side wall 301 is provided with a guiding groove 302, a wrench shaft hole 304 and a safety buckle shaft hole 305. The bottom of the right seat body 30 is further provided with a plurality of mounting holes 306. It is fixedly connected to the display unit 1 by bolts. As shown in FIG. 17, the wrench 31 has a handle 311 for the operator to apply force, and the other end is provided with a wrench shaft mounting hole 315 through which the wrench shaft 34 passes. As shown in FIG. 4 and FIG. 5, the wrench shaft 34 passes through the wrench shaft mounting hole 315, and the wrench 31 is rotatably mounted to the hole of the wrench shaft hole 304 on the two side walls 301 of the right seat body 30. As shown in FIG. 4 and FIG. 5, one end of the pull hook 32 is rotatably connected to the wrench 31 through the hook rotating shaft 35. Specifically, a hook rotating shaft hole 316 is further disposed between the handle 311 and the wrench shaft mounting hole 315. The specific structure of the hook 32 is as shown in Fig. 16, and has a hook shaft mounting hole 323 at one end. As shown in FIG. 4 and FIG. 5, the hook rotating shaft 35 is rotatably connected to the wrench 31 through the hook rotating shaft hole 316 and the hook rotating shaft mounting hole 323. As shown in Fig. 16, the other end of the hook 32 has a hook 320 which can be hooked by the hook 320 to connect the left assembly 2 to the right assembly 3 as shown in Figs. 2 and 4. As shown in FIG. 4 and FIG. 5, the positioning post 37 is slidably disposed in the right seat body 30, and is rotatably and slidably coupled to the wrench 31 through the positioning post connecting shaft 38. The specific structure of the positioning post 37 is as shown in FIG. 18, and includes: a positioning post 370, and a connecting piece 371 fixedly connected to the rear end of the positioning post 370. Actually, the connecting piece 371 can be integrally formed with the positioning post 370, or It is fixedly connected to the positioning cylinder 370 by welding. The front end of the positioning cylinder 370 has a tapered surface 3701 to serve as a guiding effect. The connecting piece 371 is provided with a waist port 3711 for connecting with the wrench 31 through the positioning post connecting shaft 38. As shown in FIG. 17, the front end of the wrench 31 is provided with a connecting piece receiving groove 312, so as to form a connecting wall 313 on each side of the connecting piece receiving groove 312, and a connecting post connection is arranged on the connecting wall 313. The locating post of the shaft 38 is coupled to the shaft bore 314. After the assembly, the positioning post 37 is located in the positioning post receiving hole 303 and can slide in the positioning post receiving hole 303 under the driving of the wrench 31. When the hook 32 is hooked on the lock cylinder 21, as shown in FIG. 4 and FIG. 5, the positioning post 37 extends into the positioning post hole 201 of the rotation angle seat 21, thereby the left assembly 2 and the right assembly 3 Provide positioning in the Y and Z directions. As shown in FIG. 3 and FIG. 5, the wrench 31 can be pulled by the handle 311 of the end of the wrench 31 to rotate the wrench 31 around the axis of the wrench shaft 34, thereby generating a lever. The effect produces a greater force to drive the hook 32 and the positioning post 37 to move so that the hook 320 of the hook 32 catches the locking post 21 on the angled seat 20. At the same time, the positioning post 37 extends into the positioning post hole 201 of the rotation angle seat 21, so that the left assembly 2 and the right assembly 3 are locked, and the state after the locking is as shown in FIGS. 2 and 4. At this time, the X-left positioning surface 200 and the X-right positioning surface 300 are in close contact with each other, thereby realizing the positioning of the left assembly 2 and the right assembly 3 in the X direction. Or the wrench 31 is pulled in the opposite direction, the hook 32 is disengaged from the lock cylinder 21, and the positioning post 37 is retracted into the right seat body 30, so that the left assembly 2 and the right assembly 3 are disengaged. The state after opening is shown in Figure 3. In summary, after the left assembly 2 and the right assembly 3 are locked, the X, Y, and Z directions are accurately positioned between the two, and the left assembly 2 and the right assembly 3 are respectively and The display unit 1 is fixedly connected, so that precise positioning and reliable connection between the two display units 1 can be realized, and the wrench 31 can be conveniently operated, and the effect of quick disassembly can be achieved. In a preferred technical solution, a guiding structure is disposed between the pull hook 32 and the right seat body 30, so that the pull hook 32 can stably maintain a good posture motion under the driving of the wrench 31 to hook the lock column 21 or Disengaged from the lock cylinder 21. Specifically, when the hook 32 is disengaged from the lock cylinder 21, it is first moved to the left away from the lock cylinder 21, and at the same time, there is a motion of raising the head. When the hook 32 is completely disengaged from the lock cylinder 21, it is moved to the right to be reset. In the embodiment, the guiding structure is as shown in FIG. 14 and FIG. 16 , and includes: the guiding pin 324 disposed on two sides of the hook 32; and as shown in FIG. 14 and FIG. 15 , correspondingly disposed in the right seat The guiding groove 302 on the two side walls 301 of the body 30. When the hook 32 is moved, the guide pin 324 slides in the guide groove 302, thereby ensuring the movement posture of the hook 32. Of course, the movement posture of the hook 32 mainly refers to the movement posture of the hook 320 at the front end of the hook 32. As shown in FIG. 16 , the rear end of the hook 32 is hollowed out to form a avoidance notch 322 , and the connecting arms 321 are naturally formed on both sides of the avoidance notch 322 . The rear spanner 31 is located in the avoidance notch 322 and is rotatably coupled to the wrench 31 via a hook pivot mounting hole 323 on the connecting arm 321 . As shown in FIGS. 3 and 14, in the preferred embodiment, the right assembly 3 further includes a safety mechanism 36 disposed between the moving member and the stationary member of the right assembly 3. When the left assembly 2 and the right assembly 3 are locked, the safety mechanism 36 locks the moving parts of the right assembly 3 to prevent the left assembly 2 and the right assembly 3 from being disengaged by external factors. Make the lock status more reliable. The moving parts mainly refer to the wrench 31, the hook 32, the positioning post 37, and the movable parts such as the positioning post connecting shaft 38 and the hook rotating shaft 35. The stationary component is primarily referred to as the right seat 30 and the wrench shaft 34 is also considered a stationary component. Specifically, in the embodiment, the wrench 31 is locked, and of course, the hook 32 or the positioning post 37 can be locked to achieve the same effect. However, in this embodiment, the lock 31 is the most Convenient, the effect is also the best. As shown in FIG. 3 and FIG. 13 , the safety mechanism 36 specifically includes the safety buckle 360 , the safety buckle returning member 361 and the safety buckle rotating shaft 362 in the specific embodiment. The safety buckle 360 is rotatably disposed at the two safety buckle shaft holes 305 of the right seat body 30 through the safety buckle shaft 362. The safety buckle resetting member 361 is a return spring in the present embodiment, which is sleeved on the safety buckle shaft 362 and elastically acts between the safety buckle 360 and the right seat body 30, so that the left assembly 2 and the right assembly 3 When in the locked state, the safety buckle 360 can hold the wrench 31 so that the left assembly 2 and the right assembly 3 are reliably locked. The specific structure of the safety buckle 360 is as shown in FIG. 19, and the lower end is provided with a safety buckle shaft mounting hole 3601, and the upper end has a hook 3602. The hook 3602 on the safety buckle 360 holds the wrench 31. As shown in FIG. 17, the middle portion of the wrench 31 is provided with a hook hole 317 corresponding to the position of the hook 3602 on the safety buckle 360. The hook 3602 has a guiding slope 3603, so that when the right assembly 3 and the left assembly 2 enter the locking state, the hook 3602 hooks the wrench 31 to enter the insurance state. In still another preferred embodiment, the safety buckle 360 has a pressing surface 3604. When the insured state needs to be released, the pressing surface 3604 can be pressed by a finger, and the safety buckle 360 rotates around the safety buckle rotating shaft 362 against the action of the safety buckle resetting member 361, so that the hook 3602 is disengaged from the wrench 31, so that the safety can be easily released. status. In a further preferred technical solution, as shown in FIG. 4 and FIG. 5, the display quick splicing device further includes an open state. a retaining member 39; the open state retaining member 39 is also disposed between the moving member and the stationary member of the right assembly 3, which enables the right assembly 3 to remain in the maximum open state when the hook 32 is not hooked to the lock cylinder 21. Mainly to ensure that the positioning post 37 is fully retracted into the right seat body 30, so as not to affect the right assembly 3 near the left assembly 2. After the right assembly 3 is fixedly connected to the display unit near the left assembly 2 and the corresponding display unit, and the X-left positioning surface 200 and the X-right positioning surface 300 are closely attached, only the pressing is required. The handle 311 on the wrench 31 can lock the two display units, so the operation is very convenient. In the embodiment, the open state retaining member 39 is specifically a tension spring that is stretched between the positioning post 37 and the right seat body 30 to pull the positioning post 37 into the right seat body 30, thereby ensuring The positioning post 37 does not protrude from the X-right positioning surface 300 in the non-locking state. Since the quick splicing device of the display screen of the invention can realize the mutual splicing between the display screens quickly and conveniently without any tools, the flexible splicing device can flexibly adapt to various use occasions; and the main parts thereof include the rotation angle seat 21 and the right side. The seat body 30, the hook 32, the wrench 31, the safety buckle 360, and the like can be manufactured by a die-casting process and a machining process, and the manufacturing precision can be up to 0.02 mm. The structure of the present invention can be designed to prevent high-density pixel display applications by innovating and subtly transferring the structural design of the contact members to prevent damage between adjacent display unit units due to squeezing. And through the precision machining and processing technology control of the assembled contact parts, the ideal assembly effect can be achieved. The total error after assembly can be controlled within 0.1mm, and the stitching accuracy can be improved by an order of magnitude, which can not only achieve fast Locked and precise locking. The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention can be made without departing from the spirit and scope of the invention.

Claims

claims

1. A display screen quick splicing device, including a left assembly and a right assembly that can interlock with each other, characterized in that the left assembly includes a rotating fixed base, a rotating angle base and a rotating locking mechanism; the rotating The angle base can be locked with the right assembly, and the rotation angle base is also rotatably connected to the rotation fixed base; the rotation locking mechanism is provided between the rotation fixed base and the rotation angle base, and the rotation locking mechanism is released When the mechanism is being used, the rotation angle base and the rotation fixing base can rotate relative to each other. When the rotation locking mechanism is locked, the rotation angle base and the rotation fixation base are fixedly connected.

2. A display screen quick splicing device as claimed in claim 1, characterized in that an arc-shaped flange is provided on the rotation angle base, and an arc-shaped guide groove is provided on the rotation fixed base, so The arc-shaped flange can slide within the arc-shaped guide groove, so that the rotation fixed base and the rotation angle base can rotate relative to each other.

3. A quick splicing device for display screens according to claim 2, characterized in that, the rotation locking mechanism includes: a locking pressure plate and a locking bolt; the locking pressure plate is slidably arranged on the rotation fixing seat On; the locking bolt penetrates the locking pressure plate and is threadedly connected to the rotating fixed seat. Through the locking bolt, the locking pressure plate can be driven close to the rotating fixed seat, and the arc-shaped flange is pressed tightly in the arc-shaped guide groove. , so that the rotating fixed base and the rotating angle base cannot rotate relative to each other.

4. A display screen quick splicing device as claimed in claim 3, characterized in that two guide posts are provided on the rotating fixed base, and the locking pressure plate is passed through the guide posts. The guide post is slidably disposed on the rotating fixed base.

5. A display screen quick splicing device as claimed in claim 3, characterized in that, the locking pressure plate is provided with a pressing ramp and a tooth-shaped structure, and the rotation angle seat is provided with a pressing ramp correspondingly; Twist the locking bolt to drive the locking pressure plate to slide along the guide pillar and approach the rotation angle seat until the pressing slope on the locking pressure plate is in close contact with the compression slope on the rotation angle seat, and the compression slope of the locking pressure plate presses axially. Tightly and radially squeeze the pressing slope of the rotating angle seat, so that the locking pressure plate axially presses the rotating angle seat, radially cooperates with the rotating fixed seat, and the locking pressure plate and the rotating fixed seat radially clamp the arc of the rotating angle seat. The toothed structure on the locking pressure plate locks the rotation angle seat while the locking pressure plate axially presses the rotation angle seat, so that the rotation angle seat and the rotation fixed seat are fixedly connected.

6. A display screen quick splicing device according to any one of claims 1 to 5, characterized in that the left assembly further includes a rotation drive mechanism; the rotation drive mechanism is provided on the rotation angle base and the rotation angle base. Between the fixed bases, the rotational driving mechanism can drive the rotation angle base to rotate relative to the rotational fixed base within a certain range.

7. A display screen quick splicing device according to claim 6, characterized in that the rotational driving mechanism is a rack and pinion mechanism; including a driving gear and an arc-shaped rack that mesh with each other; the arc-shaped rack The driving gear is fixedly arranged on the rotation angle seat, and the driving gear is rotatably arranged on the rotation fixed base. The driving gear can make the rotation angle base rotate relative to the rotation fixed base; the driving gear includes a gear shaft, a gear and a thumb. Nut; The gear fixed sleeve is set on one end of the gear shaft, and the other end of the gear shaft penetrates the rotating fixing seat and is fixedly connected to the thumb nut.

8. A quick splicing device for display screens according to claim 7, characterized in that the thumb nut has a D-shaped hole, and the cross section of one end of the gear shaft is a corresponding D shape, and there is a fixing screw perpendicular to the gear. The axis of the shaft passes through the thumb nut and is threadedly connected to the gear shaft.

9. A display screen quick splicing device according to any one of claims 1 to 5, characterized in that the left assembly further includes: when the rotation locking mechanism is released, the rotation angle base and the rotation angle seat are A locking and reset mechanism that automatically releases the fixed base to a relatively rotatable state. The locking and reset mechanism is provided between the rotating angle base and the rotating fixed base.

10. A display screen quick splicing device according to any one of claims 1 to 6, characterized in that the left assembly further includes a device that limits the relative rotation of the rotation fixed base and the rotation angle base within a certain range. The rotation limiting mechanism is provided between the rotation fixed base and the rotation angle base.