Assembling mechanism and method for COB-LED display all-in-one machine
By using a design that combines bearing pulley components with track profiles in the COB-LED display all-in-one machine, along with plug-in connectors and screw connections, the problem of time-consuming manual inspection during screen splicing is solved, enabling fast and flat screen installation and improving display effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGCHUN CELONG DISPLAY TECHNOLOGY CO LTD
- Filing Date
- 2026-03-24
- Publication Date
- 2026-04-21
AI Technical Summary
The current COB-LED display all-in-one machine relies on manual experience and is time-consuming during the screen splicing process, making it difficult to guarantee the flatness of the screen and the splicing gaps, resulting in poor display effect.
By using bearing pulley assemblies in conjunction with track profiles, and combining them with interlocking connectors and screw connections, rapid assembly and flatness adjustment can be achieved, reducing the time required for manual inspection and adjustment.
By using the sliding mechanism of the bearing pulley assembly and the track profile, along with the interlocking connectors, the flatness between screens and the gaps between them are ensured, thus shortening the installation time and improving the display effect.
Smart Images

Figure CN121908491A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of display all-in-one machine assembly technology, and specifically to an assembly mechanism and method for a COB-LED display all-in-one machine. Background Technology
[0002] Currently, the screen assembly process of COB-LED integrated display products consists of 25 unit boxes and 200 COB-LED display modules. During installation, the 25 unit boxes need to be spliced together in a 5-row, 5-column configuration, with the front and rear ends of the unit boxes flush. Then, through screws are used inside the unit boxes to connect and fix them at the top, bottom, left, and right positions.
[0003] After the unit boxes are assembled and fixed, connect the power cascading lines and signal cascading lines of the vertical unit boxes, install the mounting brackets on the back, and finally fix them to the installation positions such as mobile brackets or walls using the mounting brackets. After the unit boxes are assembled, install 200 display modules to the corresponding positions of the unit boxes.
[0004] After the screen is installed, the flatness, gaps, and seams at the splicing points of the COB-LED display modules need to be inspected and adjusted multiple times. Gaps will cause black lines on the screen when viewed from the front, and poor flatness will cause poor uniformity of the screen when viewed from the side. Therefore, it is necessary to inspect and adjust until there are no obvious splicing gaps when viewed from the front and no obvious flatness gaps when viewed from the side. In the inspection process, it often relies on the relevant experience of the assembly personnel and requires a lot of time. Summary of the Invention
[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art, thereby providing an assembly mechanism and method for a COB-LED display all-in-one machine.
[0006] An assembly mechanism for a COB-LED integrated display includes: a display module and a unit housing. The display module is mounted on the unit housing. A bearing pulley assembly is fixedly mounted on the back of the unit housing. The assembly mechanism also includes a track profile with a slide rail. The bearing pulley assembly is slidably mounted on the slide rail. The unit housing is also provided with a plug-in connector, which is arranged opposite to each other.
[0007] Furthermore, the interlocking connector includes a support arm and a connecting arm, the support arms are arranged in pairs, and the support arms and the connecting arms are connected.
[0008] Furthermore, the support arm is provided with a splicing groove, which includes a first plane, a first inclined plane and a second plane. The included angle E between the first plane and the first inclined plane is 135 degrees, and the included angle M between the first inclined plane and the second plane is 135 degrees.
[0009] Furthermore, the support arm is also provided with a third plane and a second inclined plane, the included angle N between the third plane and the second inclined plane is 135 degrees, and the included angle F between the first plane and the second inclined plane is 135 degrees.
[0010] Furthermore, the bearing pulley assembly includes a connecting bolt, a pulley, and a bearing. The outer ring of the bearing is connected to the pulley, the inner ring of the bearing is fixedly connected to the connecting bolt, and the connecting bolt is threadedly connected to the unit housing.
[0011] Furthermore, the bearing pulley assembly also includes a limiting sleeve, which is fixedly installed on the inner ring of the bearing.
[0012] Furthermore, the assembly mechanism also includes a connecting piece, which is connected to the track profile.
[0013] Furthermore, a fixing hole is provided at the connection between the support arm and the connecting arm.
[0014] Furthermore, the cross-section of the limiting sleeve is annular.
[0015] The present invention also includes an assembly method for a COB-LED display all-in-one machine. This method is based on the assembly mechanism of a COB-LED display all-in-one machine described above. According to the size of the display all-in-one machine screen to be assembled, the track profile is fixedly placed in a designated position. Then, the bearing pulley assembly is installed on the back of the unit box. The display module and the unit box are quickly slid and assembled along the slide on the track profile through the bearing pulley assembly. Finally, the interlocking connectors on the unit box are used to interlock and overlap to adjust the flatness between the screens. The splicing gap is reduced by fastening the connection with screws inside the unit box.
[0016] The technical solution of this invention has the following advantages: In the technical solution provided by this invention, a bearing pulley assembly is installed on the back of the unit box. The bearing pulley assembly slides with the track profile to achieve rapid assembly. Furthermore, the flatness and splicing gap between the screens are ensured by the interlocking and overlapping of the relatively set interlocking connectors and the screw connection. This eliminates the need for manual inspection and adjustment and effectively shortens the splicing and installation time. Attached Figure Description
[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a front view of the structure of the display module of the present invention; Figure 2 This is a schematic diagram showing the connection relationship between the connecting piece, the track profile, and the unit box of the present invention; Figure 3 This is a schematic diagram of the screen structure composed of the single-column display modules of the present invention; Figure 4 This is a schematic diagram showing the installation position of the bearing pulley assembly of the present invention; Figure 5 This is a schematic diagram of the connecting piece and track profile of the present invention; Figure 6 This is a schematic diagram of the interlocking connector of the present invention; Figure 7 This is a schematic diagram of the mating installation state of the plug-in connector of the present invention; Figure 8 This is a schematic diagram showing the connection relationship between the connecting bolts, pulleys, and bearings of the present invention; Figure 9 This is a schematic diagram showing the connection relationship between the connecting bolt, the limiting sleeve, and the pulley in this invention; Figure 10 This is a schematic diagram showing the installation positions of the mating connector and the magnetic screw of the present invention; Figure 11 This is a schematic diagram showing the installation positions of the bearing pulley assembly and the magnetic head of the present invention.
[0019] Explanation of reference numerals in the attached figures: 1-Display module; 101-First row display module; 102-Second row display module; 103-Third row display module; 104-Fourth row display module; 105-Fifth row display module; 2-Connecting piece; 3-Rail profile; 4-Unit housing; 5-Matching connector; 501-Support arm; 502-Connecting arm; 503-First plane; 504-First inclined plane; 505-Second plane; 506-Third plane; 507-Second inclined plane; 6-Bearing pulley assembly; 601-Connecting bolt; 602-Limiting sleeve; 603-Pulley; 604-Bearing; 7-Magnetic screw; 8-Magnetic head. Detailed Implementation
[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0023] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 10 and Figure 11 The assembly mechanism of a COB-LED display all-in-one machine shown includes: a display module 1 and a unit housing 4. The display module 1 is installed on the unit housing 4 to form the screen body. A bearing pulley assembly 6 is fixedly installed on the back of the unit housing 4. The assembly mechanism also includes a track profile 3 with a slide rail. The bearing pulley assembly 6 is slidably arranged on the slide rail. The unit housing 4 is also provided with a plug-in connector 5, which is arranged opposite to each other.
[0025] The assembly mechanism of the aforementioned COB-LED display all-in-one machine achieves rapid assembly by installing a bearing pulley assembly 6 on the back of the unit housing 4. The bearing pulley assembly 6 and the track profile 3 cooperate to slide and achieve rapid assembly. Furthermore, the flatness and splicing gap between the screens are ensured by the interlocking and overlapping of the relatively set interlocking connectors 5 and the screw connection. It does not rely on manual inspection and adjustment, effectively shortening the splicing and installation time.
[0026] like Figure 3 , Figure 6 , Figure 7 and Figure 10As shown, in this embodiment, the interlocking connector 5 includes a support arm 501 and a connecting arm 502. The support arms 501 are paired and arranged in parallel, and the support arms 501 and the connecting arms 502 are connected. A fixing hole is provided at the connection between the support arms 501 and the connecting arms 502. The support arms 501 and the connecting arms 502 are integrally formed, which enhances the stability of the overall structure. The support arms 501 and the connecting arms 502 are vertically positioned, which can effectively improve the torsional stiffness of the entire interlocking connector 5. The interlocking connector 5 is fixedly installed on the corresponding unit box 4 through the fixing hole and screws to achieve interlocking and ensure the flatness between the screens, without the need for manual inspection and adjustment.
[0027] like Figure 3 , Figure 6 , Figure 7 and Figure 10 As shown in this embodiment, the support arm 501 is provided with an interlocking splicing slot, which includes a first plane 503, a first inclined plane 504, and a second plane 505. E is the included angle between the first plane 503 and the first inclined plane 504, and the included angle E between the first plane 503 and the first inclined plane 504 is 135 degrees. M is the included angle between the first inclined plane 504 and the second plane 505, and the included angle M between the first inclined plane 504 and the second plane 505 is 135 degrees. The design of the interlocking splicing slot is to allow the two support arms 501 to overlap. Without the interlocking splicing slot, the support arm 501 and the entire interlocking connector 5 would not be able to adjust the flatness, and warping and other phenomena would occur, resulting in poor screen display effect. In particular, the uniformity of the side-view screen is poor. By setting the included angle E between the first plane 503 and the first inclined plane 504 to 135 degrees and the included angle M between the first inclined plane 504 and the second plane 505 to 135 degrees, it is effectively ensured that the opening of the interlocking splicing slot will not cause stress concentration in the support arm 501, and thus will not affect the flatness during the screen assembly process. Moreover, the included angles E and M are the same, and their supplementary angles are both 45 degrees, which can further ensure the uniformity of stress distribution. Without the above special design of angles, the support arm 501 of the interlocking connector 5 will experience stress concentration during the splicing process, which may affect the flatness or even breakage, thus causing irreparable damage to the screen.
[0028] like Figure 6As shown, in this embodiment, the support arm 501 is also provided with a third plane 506 and a second inclined plane 507. N is the included angle between the third plane 506 and the second inclined plane 507, and the included angle N between the third plane 506 and the second inclined plane 507 is 135 degrees. F is the included angle between the first plane 503 and the second inclined plane 507, and the included angle F between the first plane 503 and the second inclined plane 507 is 135 degrees. Since the support arms 501 need to be interlocked, in order to ensure that there is no jamming during the process, improve the smoothness of the interlocking process, and reduce the adjustment time, the above-mentioned included angles N and F are both set to 135 degrees. By designing a wedge-shaped angle structure, the interlocking process of the two support arms 501 can be guaranteed to be smooth and time can be saved.
[0029] like Figure 2 , Figure 4 , Figure 8 , Figure 9 and Figure 11 As shown, in this embodiment, the bearing pulley assembly 6 includes a connecting bolt 601, a pulley 603, and a bearing 604. The outer ring of the bearing 604 is connected to the pulley 603, and the inner ring of the bearing 604 is fixedly connected to the connecting bolt 601 by adhesive bonding. The connecting bolt 601 is threadedly connected to the unit housing 4. The connecting bolt 601 enables the bearing pulley assembly 6 to be fixedly installed on the corresponding unit housing 4. Thus, during the assembly of the screen, the bearing 604 can drive the pulley 603 to slide along the track profile 3 to achieve rapid assembly, effectively saving assembly time.
[0030] like Figure 2 , Figure 4 , Figure 8 , Figure 9 and Figure 11 As shown, in this embodiment, the bearing pulley assembly 6 further includes a limiting sleeve 602, which is fixedly installed on the inner ring of the bearing 604. The limiting sleeve 602 has a circular cross-section. The limiting sleeve 602 is fixed to the side of the inner ring of the bearing 604 by adhesive bonding, and it is adapted to the inner ring of the bearing 604. Therefore, the limiting sleeve 602 has a circular cross-section. The function of the limiting sleeve 602 is to limit the movement of the bearing pulley assembly 6 during installation, so as to avoid interference between the pulley 603 on the bearing pulley assembly 6 and the unit housing 4, which would affect the movement of the pulley 603 during the splicing process.
[0031] like Figure 2 and Figure 5 As shown, in this embodiment, the assembly mechanism also includes a connecting piece 2, which is connected to the track profile 3. The connecting piece 2 and the track profile 3 are fastened together by screws to effectively fix and position the track profile 3, thereby ensuring the stability and accuracy of the screen assembly process.
[0032] like Figures 1-11 As shown, the present invention also includes an assembly method for a COB-LED display all-in-one machine. This method is based on the assembly mechanism of a COB-LED display all-in-one machine described above. According to the size of the display all-in-one machine screen to be assembled, the track profile 3 is fixedly placed in a designated position. Then, the bearing pulley assembly 6 is installed on the back of the unit box 4. The display module 1 and the unit box 4 are quickly slid and assembled along the slide on the track profile 3 through the bearing pulley assembly 6. Finally, the interlocking connectors 5 on the unit box 4 are used to interlock and overlap to adjust the flatness between the screens. The splicing gap is reduced by fastening the connection with screws inside the unit box 4. Specifically, the track profile 3 is fixedly placed in the designated position according to the size of the display panel to be assembled. In this embodiment, there are a total of five columns of screens, with five unit boxes 4 forming one column. The display module 1 includes a first row of display modules 101, a second row of display modules 102, a third row of display modules 103, a fourth row of display modules 104, and a fifth row of display modules 105 arranged sequentially. Each row of display modules 1 corresponds to one unit box 4. Two pairs of bearing pulley assemblies 6 are installed at corresponding positions between the unit boxes 4 corresponding to the first row of display modules 101 and the second row of display modules 102, and between the unit boxes 4 corresponding to the third row of display modules 103 and the fourth row of display modules 104. The left and right sides of each unit box 4 are respectively installed with plug-in connectors 5. The unit boxes 4 corresponding to the first row of display modules 101, the third row of display modules 103, and the fifth row of display modules 105 are also installed with plug-in connectors 5. Magnetic screws 7 are installed at the corresponding connection positions inside. Magnetic screws 7 have a built-in magnet that can rotate under magnetic force. The magnet can drive the screw to rotate, thereby achieving a tight connection. A magnetic head 8 is used in conjunction with this. The magnetic head 8 has a rotating cross-shaped magnet rotor inside. By approaching the magnetic screw 7, it generates magnetic force, and the magnet inside the magnetic screw 7 can drive the screw to rotate, achieving a tight connection. After the above steps are completed, the screen assembly is performed. The bearing pulley assembly 6 is installed on the back of the unit box 4 using connecting bolts 601. The display module 1 and the unit box 4 are quickly assembled by sliding along the slide rail on the track profile 3 using the pulleys 603 in the bearing pulley assembly 6. Finally, the support arms 501 of the interlocking connectors 5 on the unit box 4 are interlocked to adjust the flatness between the screens. Inside the unit box 4, the magnetic head 8 drives the magnetic screws 7 to achieve a tight connection between the unit boxes 4, reducing the splicing gap.
[0033] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. An assembly mechanism for a COB-LED all-in-one display, comprising: The display module (1) and the unit box (4) are characterized in that the display module (1) is installed on the unit box (4), the back of the unit box (4) is fixedly installed with a bearing pulley assembly (6), the assembly mechanism also includes a track profile (3), a slide is provided on the track profile (3), the bearing pulley assembly (6) is slidably arranged on the slide, and the unit box (4) is also provided with a plug-in connector (5), which is arranged opposite to each other.
2. The assembly mechanism of a COB-LED display all-in-one machine according to claim 1, characterized in that, The interlocking connector (5) includes a support arm (501) and a connecting arm (502). The support arms (501) are arranged in pairs and the support arms (501) and the connecting arms (502) are connected.
3. The assembly mechanism of a COB-LED display all-in-one machine according to claim 2, characterized in that, The support arm (501) is provided with a splicing groove, which includes a first plane (503), a first inclined plane (504) and a second plane (505). The included angle E between the first plane (503) and the first inclined plane (504) is 135 degrees, and the included angle M between the first inclined plane (504) and the second plane (505) is 135 degrees.
4. The assembly mechanism of a COB-LED display all-in-one machine according to claim 3, characterized in that, The support arm (501) is also provided with a third plane (506) and a second inclined plane (507). The included angle N between the third plane (506) and the second inclined plane (507) is 135 degrees, and the included angle F between the first plane (503) and the second inclined plane (507) is 135 degrees.
5. The assembly mechanism of a COB-LED display all-in-one machine according to claim 1, characterized in that, The bearing pulley assembly (6) includes a connecting bolt (601), a pulley (603) and a bearing (604). The outer ring of the bearing (604) is connected to the pulley (603), and the inner ring of the bearing (604) is fixedly connected to the connecting bolt (601). The connecting bolt (601) is threadedly connected to the unit housing (4).
6. The assembly mechanism of a COB-LED display all-in-one machine according to claim 5, characterized in that, The bearing pulley assembly (6) also includes a limiting sleeve (602), which is fixedly installed on the inner ring of the bearing (604).
7. The assembly mechanism of a COB-LED display all-in-one machine according to claim 1, characterized in that, The assembly mechanism also includes a connecting piece (2), which is connected to the track profile (3).
8. The assembly mechanism of a COB-LED display all-in-one machine according to claim 2, characterized in that, The support arm (501) and the connecting arm (502) are provided with a fixing hole.
9. The assembly mechanism of a COB-LED display all-in-one machine according to claim 6, characterized in that, The cross-section of the limiting sleeve (602) is circular.
10. A method for assembling a COB-LED display all-in-one machine, the method being implemented based on the assembly mechanism of a COB-LED display all-in-one machine as described in any one of claims 1 to 9, characterized in that, According to the size of the display screen to be assembled, the track profile (3) is fixedly placed in the designated position. Then, the bearing pulley assembly (6) is installed on the back of the unit box (4). The display module (1) and the unit box (4) are quickly assembled by sliding along the slide on the track profile (3) through the bearing pulley assembly (6). Finally, the interlocking connectors (5) on the unit box (4) are used to interlock and overlap to adjust the flatness between the screens. The splicing gap is reduced by fastening the connection with screws inside the unit box (4).
Citation Information
Patent Citations
Splicing display device
CN107067986A
Transverse exhibition equipment
CN217329276U
Box body, display module and spliced display device
CN220476074U
Slide rail type quick building device for LED (light-emitting diode) screen body
CN221196892U
LED all-in-one machine capable of being quickly assembled
CN222914364U