Pre-maintenance device, display module and display screen

Abstract

The utility model discloses a front maintenance device, a display module and a display screen, and relates to the technical field of display screens. The front maintenance device comprises a maintenance ejector pin, a base and a supporting block. The maintenance ejector pin is used for being inserted into the front maintenance hole to apply acting force perpendicular to the direction of the display module to the locking assembly. At least two positioning hole groups are formed in the base, each positioning hole group comprises two positioning holes which are formed at intervals, and the distances between the two positioning holes in different positioning hole groups are different. The supporting block is movably arranged on the base, at least two guide hole sets are formed in the supporting block, each guide hole set comprises two guide holes formed in a spaced mode, and the distances between the two guide holes in different guide hole sets are different. The two guide holes in each guide hole set can move to correspond to the two positioning holes in one positioning hole set in a one-to-one mode, a maintenance ejector pin is arranged in each guide hole in a telescopic mode, and the maintenance ejector pins can penetrate through the corresponding positioning holes to be inserted into the front maintenance holes by pressing the maintenance ejector pins.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen technical field especially relates to a front maintenance device, display module and display screen. BACKGROUND

[0002] LED display screen is applied to various occasions as the main carrier of media propagation, and most display modules of LED display screen are fixed on the box frame in a magnetic attraction mode and have the function of safety lock of display module, which can prevent the display module from falling accidentally.

[0003] The display module needs to be frequently disassembled and maintained, especially in the leasing industry, the display module needs to be frequently disassembled. In addition to overcoming the adsorption force of the magnet, the user also needs to unlock the safety lock of the display module when taking out the display module. The front maintenance hole is usually provided on the display module, and the disassembly and maintenance device is used to unlock or lock the safety lock through the front maintenance hole during disassembly and maintenance.

[0004] In order to realize the front maintenance of the display module with smaller pixel pitch, two maintenance holes with smaller aperture are provided on the display module in the prior art, one is an unlocking hole, and the other is a locking hole. The safety lock can be unlocked by applying a force perpendicular to the display module through the unlocking hole by the maintenance needle, and the safety lock can be locked by applying a force perpendicular to the display module through the locking hole. A separate maintenance needle is usually used for unlocking and locking operation, but the separate maintenance needle is small and has no special placement position, which is easy to lose and difficult for the operator to find when in use. In the prior art, two maintenance needles are connected together by a support block to form a front maintenance device, and the distance between the two maintenance needles is matched with the distance between the two front maintenance holes. However, for display modules with different pixel pitches, the distance between the two front maintenance holes is different, and the front maintenance device in the prior art cannot meet the front maintenance of display modules with different pixel pitches, and the universality is low, which increases the maintenance cost. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a front maintenance device, display module and display screen, which can be applied to the front maintenance of display modules with different pixel pitches, has better universality and reduces the maintenance cost.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] The front maintenance device is used for disassembling and assembling the display module and the box body. The display module includes a locking assembly and two front maintenance holes arranged at intervals. One of the front maintenance holes is used for unlocking the locking assembly, and the other front maintenance hole is used for locking the locking assembly. The front maintenance device includes:

[0008] A maintenance pin is used to insert into the front maintenance hole to apply a force on the locking assembly which is perpendicular to the direction of the display module;

[0009] A base is provided with at least two sets of positioning hole groups, each set of the positioning hole groups includes two positioning holes which are spaced apart, and the distance between the two positioning holes in different positioning hole groups is different;

[0010] A support block is movably arranged on the base, the support block is provided with at least two sets of guide hole groups, each set of the guide hole groups includes two guide holes which are spaced apart, the distance between the two guide holes in different guide hole groups is different, the two guide holes in each set of the guide hole groups can be moved to one-to-one correspond to the two positioning holes in one set of the positioning hole groups, and a maintenance pin is telescopically arranged in each guide hole, and pressing the maintenance pin can make the maintenance pin insert into the front maintenance hole through the corresponding positioning hole.

[0011] As an optional solution of the front maintenance device, a sliding groove is arranged on the base, the sliding groove is arranged between the two spaced apart positioning holes, and the sliding groove extends along a direction which is perpendicular to the line connecting the two spaced apart positioning holes, and the support block is movably arranged in the sliding groove through a connecting piece;

[0012] The at least two sets of guide hole groups are spaced apart along the extension direction of the sliding groove.

[0013] As an optional solution of the front maintenance device, the sliding groove is arranged as a stepped groove, the groove with a larger width in the stepped groove is arranged at one end of the base which is away from the support block, and the groove with a smaller width in the stepped groove is arranged at one end of the base which is close to the support block;

[0014] The connecting piece includes a T-shaped pin, the top of the T-shaped pin is clamped at the step of the stepped groove, the bottom of the T-shaped pin is connected with the support block, and moving the T-shaped pin along the extension direction of the stepped groove can drive the support block to move.

[0015] As an optional solution of the front maintenance device, a positioning groove is arranged on the outer periphery of the base, and the positioning groove is located on the extension line of the line connecting the two positioning holes in each set of the positioning hole groups;

[0016] An alignment groove is arranged on the outer periphery of the support block, and the alignment groove is located on the extension line of the line connecting the two guide holes in each set of the guide hole groups;

[0017] The alignment groove and the positioning groove are in butt joint, which can align the positioning hole groups with the corresponding guide hole groups.

[0018] As an optional solution of the front maintenance device, all the positioning holes in the at least two groups of positioning hole groups are located on the same line, and the positioning groove is provided with one, and each group of the guide hole groups is provided with one corresponding alignment groove.

[0019] As an optional solution of the front maintenance device, the support block is provided with a positioning bead near one end of the base, and the base is provided with at least two groups of moving-to-position identification holes, the positioning bead is moved to the moving-to-position identification holes, and the ball bead of the positioning bead can be extended to cooperate with the moving-to-position identification holes.

[0020] The at least two groups of moving-to-position identification holes are used to position at least two moving positions of the support block on the base.

[0021] As an optional solution of the front maintenance device, a guide spring is arranged between the maintenance thimble and the guide hole, the guide hole is provided as a stepped hole, and the inner diameter of the stepped hole near one end of the base is smaller than the inner diameter of the end away from the base.

[0022] The maintenance thimble comprises a pressing head and a thimble, the outer diameter of the pressing head is larger than the outer diameter of the thimble, and the guide spring is arranged between the connection of the stepped hole and the pressing head.

[0023] As an optional solution of the front maintenance device, the stepped hole comprises a first hole and a second hole, the first hole is arranged at one end of the support block near the base, the second hole is arranged at one end of the support block away from the base, and a limiting hole is further arranged between the first hole and the second hole, and the inner diameter of the limiting hole is smaller than the inner diameter of the first hole.

[0024] The thimble comprises a connecting portion, a limiting portion and a thimble body, the limiting portion is located between the connecting portion and the thimble body, the outer diameter of the connecting portion is smaller than the inner diameter of the limiting hole, the limiting portion is slidably arranged in the first hole, and the outer diameter of the thimble body is smaller than the outer diameter of the connecting portion; the guide spring is sleeved on the outer periphery of the connecting portion, one end of the guide spring is connected with the connection of the second hole and the limiting hole, and the other end is connected with the pressing head; the connection of the first hole and the limiting hole abuts against the limiting portion, and can limit the movement of the maintenance thimble away from the base.

[0025] The display module is disassembled by using the front maintenance device, the locking assembly comprises a disassembly shaft, a first locking piece and a second locking piece, the disassembly shaft comprises a transmission part and a maintenance part, the first locking piece and the second locking piece are matched with the transmission part at one end close to each other, the disassembly shaft is rotated, and the first locking piece and the second locking piece can be driven to move in the direction close to or away from each other, and the front maintenance hole is arranged corresponding to the maintenance part.

[0026] As an optional solution of the display module, the maintenance part comprises an unlocking plane and a locking plane, the unlocking plane and the locking plane are arranged at a preset angle along the circumferential direction of the disassembly shaft; two front maintenance holes, one of which is an unlocking hole, and the other is a locking hole, the unlocking hole can correspond to the unlocking plane, and the locking hole can correspond to the locking plane.

[0027] The display screen comprises a box body and the display module as described above, and the box body is detachably connected with the display module.

[0028] The display screen comprises a box body and the display module as described above, and the box body is detachably connected with the display module.

[0029] The front maintenance device provided by the utility model, including maintenance thimble, base and support block, through setting at least two groups of positioning hole groups on the base, at least two groups of guide hole groups are arranged on the support block, the interval between two positioning holes in each positioning hole group is different, the interval between two front maintenance holes of the display module with at least two kinds of pixel intervals is corresponding to at least two groups of positioning hole groups, similarly, the interval between two guide holes in at least two groups of guide hole groups is corresponding to the interval between two front maintenance holes of the display module with at least two kinds of pixel intervals. Two maintenance thimbles are installed in the two guide holes of each guide hole group. The maintenance thimble is arranged in the guide hole in a telescopic mode, which can connect the maintenance thimble to the support block, avoid the loss of the maintenance thimble due to no place to place, and affect the maintenance of the display module; meanwhile, it can also avoid the influence of the maintenance thimble extending out of the guide hole and the positioning hole on the movement of the support block on the base. When disassembling and assembling the display module, first align the two positioning holes of a positioning hole group corresponding to the interval between the two front maintenance holes in the display module with the two front maintenance holes on the base, then align the two guide holes with the same interval as the two front maintenance holes with the two positioning holes, so that the maintenance thimble can enter the front maintenance hole through the guide hole and the positioning hole. When unlocking, press the maintenance thimble corresponding to the unlocked front maintenance hole; when locking, press the maintenance thimble corresponding to the locked front maintenance hole. The display module can be unlocked or locked. When disassembling and assembling the display module with different pixel intervals, only need to move the support block, align the guide hole on the support block corresponding to the interval between the two front maintenance holes on the display module with the positioning hole on the base corresponding to the interval between the two front maintenance holes of the display module, and then align the positioning hole with the front maintenance hole to disassemble and assemble. The front maintenance device can be used for the front maintenance of the display module with different pixel intervals, has better universality, and reduces the maintenance cost.

[0030] The display module provided by the utility model is disassembled and assembled by the above-mentioned front maintenance device, and the two maintenance thimbles in each guide hole group can pass through the two front maintenance holes with different intervals on the display module with different pixel intervals and apply force on the disassembling and assembling shaft, one of the maintenance thimbles makes the disassembling and assembling shaft rotate and moves the first locking member and the second locking member to the direction of approaching each other, so as to unlock the display module; the other maintenance thimble makes the disassembling and assembling shaft rotate to the opposite direction and moves the first locking member and the second locking member to the direction of moving away from each other, so as to lock the display module. The front maintenance of the display module with different pixel intervals is realized, the universality is better, and the maintenance cost is lower.

[0031] The display screen provided by the utility model adopts the above-mentioned display module, is more convenient to disassemble and assemble and maintain, and has lower maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the cooperation schematic view of the front maintenance device and the display device provided by the utility model in the embodiment;

[0033] Figure 2 is a first perspective view of the front maintenance device provided by the embodiment of the utility model;

[0034] Figure 3 is an exploded view of the front maintenance device provided by the embodiment of the utility model;

[0035] Figure 4 is a second perspective view of the front maintenance device provided by the embodiment of the utility model;

[0036] Figure 5 is a first sectional view of the front maintenance device provided by the embodiment of the utility model;

[0037] Figure 6 is a second sectional view of the front maintenance device provided by the embodiment of the utility model;

[0038] Figure 7 is a third sectional view of the front maintenance device provided by the embodiment of the utility model.

[0039] In the drawings:

[0040] 100, display module; 101, front maintenance hole; 102, locking assembly; 1021, dismounting shaft; 1022, first locking piece; 1023, second locking piece;

[0041] 1, maintenance thimble; 11, pressing head; 111, mounting groove; 12, thimble; 121, connecting part; 122, limiting part; 123, thimble body;

[0042] 2, base; 21, first positioning hole group; 211, first positioning hole; 22, second positioning hole group; 221, second positioning hole; 23, sliding groove; 24, positioning groove; 25, moving to position identification hole;

[0043] 3, support block; 31, first guide hole group; 311, first guide hole; 32, second guide hole group; 321, second guide hole; 33, alignment groove; 34, holding part;

[0044] 301, first hole; 302, second hole; 303, limiting hole;

[0045] 4, T-shaped pin;

[0046] 5, positioning bead;

[0047] 6, guide spring. EMBODIMENT

[0048] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model is further illustrated below in combination with the drawings and through specific implementation manners.

[0049] In the description of the utility model, unless another explicit stipulation and limitation, the terms "connection", "connect", "fix" should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication or mutual action relationship of two elements inside two elements.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0050] As shown in Figure 1 The embodiment provides a display screen, which comprises a box body and a display module 100, a plurality of magnetic attraction positions are arranged on the back of the display module 100, and the plurality of magnetic attraction positions are arranged in one-to-one correspondence with a plurality of magnets on the box body, so that the display module 100 is magnetically connected to the box body.

[0051] In order to prevent the display module 100 from falling accidentally due to the disappearance of the magnetism of the magnet and the like, the embodiment further provides a display module 100 applied to the display screen. The display module 100 comprises a locking assembly 102 and two front maintenance holes 101 arranged at intervals, the locking assembly 102 comprises a dismounting shaft 1021, a first locking piece 1022 and a second locking piece 1023, the dismounting shaft 1021 comprises a transmission part and a maintenance part, the first locking piece 1022 and the second locking piece 1023 are matched with the transmission part at one end close to each other, the dismounting shaft 1021 is rotated, and the first locking piece 1022 and the second locking piece 1023 can be driven to move in the direction close to or away from each other, and the front maintenance hole 101 is arranged in correspondence with the maintenance part.

[0052] Specifically, the transmission part is provided as a gear structure, the first locking piece 1022 is provided with a first rack structure at one end close to the second locking piece 1023, the second locking piece 1023 is provided with a second rack structure at one end close to the first locking piece 1022, the first rack structure and the second rack structure are respectively located at opposite sides of the gear structure, and the first rack structure and the second rack structure are both engaged with the gear structure, so that when the dismounting shaft 1021 rotates in the same direction, the first rack structure and the second rack structure move in opposite directions, thereby driving the first locking piece 1022 and the second locking piece 1023 to move in directions away from or close to each other. The first locking piece 1022 and the second locking piece 1023 are both provided with a clamping part at one end away from each other, when the first locking piece 1022 and the second locking piece 1023 move in the direction away from each other, the clamping part can be clamped with the clamping position of the box, thereby clamping and locking the display module 100 with the box. When the first locking piece 1022 and the second locking piece 1023 move in the direction close to each other, the clamping part can be disengaged from the clamping position of the box, thereby disengaging and unlocking the display module 100 from the box.

[0053] The maintenance part includes an unlocking plane and a locking plane, the unlocking plane and the locking plane are arranged at a preset angle along the circumferential direction of the dismounting shaft 1021, of the two front maintenance holes 101, one is an unlocking hole and the other is a locking hole, the unlocking hole can correspond to the unlocking plane, and the locking hole can correspond to the locking plane. When the display device is clamped and locked with the box, the dismounting shaft 1021 is just rotated to correspond to the unlocking hole and the unlocking plane, the maintenance thimble 1 corresponding to the unlocking hole can abut against the unlocking plane after passing through the unlocking hole, an action force perpendicular to the display module 100 is applied to the unlocking plane, the dismounting shaft 1021 rotates, driving the first locking piece 1022 and the second locking piece 1023 to move in the direction close to each other, thereby making the clamping part disengage from the clamping position of the box, thereby realizing unlocking of the display module 100 from the box. After the display module 100 is unlocked from the box, the dismounting shaft 1021 is just rotated to correspond to the locking hole and the locking plane, the maintenance thimble 1 corresponding to the locking hole can abut against the locking plane after passing through the locking hole, an action force perpendicular to the display module 100 is applied to the locking plane, the dismounting shaft 1021 rotates, driving the first locking piece 1022 and the second locking piece 1023 to move in the direction away from each other, thereby making the clamping part engage with the clamping position, thereby realizing locking of the display module 100 with the box.

[0054] Currently, front maintenance of the display module 100 is performed using a single maintenance pin 1. However, the maintenance pin 1 has no fixed placement position, is small in size, and is easily lost due to its inconspicuous nature. In existing technology, two maintenance pins 1 are connected together by a support block 3 to form a front maintenance device, with the spacing between the two maintenance pins 1 matching the spacing between the two front maintenance holes 101. However, for display modules 100 with different pixel pitches, the spacing between the two front maintenance holes 101 varies. Therefore, the existing front maintenance device cannot meet the front maintenance needs of display modules 100 with different pixel pitches, resulting in low versatility and increased maintenance costs.

[0055] like Figure 2 and Figure 3 As shown, this embodiment provides a front maintenance device for assembling and disassembling the display module 100 from the housing. The front maintenance device includes a maintenance pin 1, a base 2, and a support block 3. The maintenance pin 1 is inserted into the front maintenance hole 101 to apply a force perpendicular to the direction of the display module 100 to the locking assembly 102. The base 2 is provided with at least two sets of positioning holes, each set including two spaced-apart positioning holes. The spacing between the two positioning holes in different sets is different to accommodate the spacing between the two front maintenance holes 101 on display modules 100 with different pixel pitches. The support block 3 is movably mounted on the base 2 and is provided with at least two sets of guide holes, each set including two spaced-apart guide holes. The spacing between the two guide holes in different sets is different, and the two guide holes in each set can be moved to correspond one-to-one with the two positioning holes in one of the positioning hole sets. A maintenance pin 1 is retractably installed in each guide hole. Pressing the maintenance pin 1 allows it to pass through its corresponding positioning hole and be inserted into the front maintenance hole 101. The retractable installation of the maintenance pin 1 in the guide hole not only allows the maintenance pin 1 to be connected to the support block 3, preventing it from being lost due to lack of storage space and affecting the maintenance of the display module 100, but also prevents the maintenance pin 1 from protruding from the guide hole and positioning hole and affecting the movement of the support block 3 on the base 2.

[0056] When disassembling the display module 100, first align the two positioning holes of a set of positioning hole groups on the base 2 corresponding to the interval of the two front maintenance holes 101 in the display module 100 with the two front maintenance holes 101, and then align the two guide holes with the same interval as the two front maintenance holes 101 with the two positioning holes, so that the maintenance thimble 1 can enter the front maintenance hole 101 through the guide hole and the positioning hole. When unlocking, press the maintenance thimble 1 corresponding to the unlocked front maintenance hole 101; when locking, press the maintenance thimble 1 corresponding to the locked front maintenance hole 101. Thus, the display module 100 can be unlocked or locked. When disassembling the display module 100 with different pixel intervals, only need to move the support block 3, align the guide holes on the support block 3 corresponding to the interval of the two front maintenance holes 101 on the display module 100 with the positioning holes on the base 2 corresponding to the interval of the two front maintenance holes 101 on the display module 100, and then align the positioning holes with the front maintenance holes 101 to disassemble. The front maintenance device can be used for the front maintenance of display modules 100 with different pixel intervals, has better universality, and reduces maintenance cost.

[0057] Exemplarily, two sets of positioning hole groups are provided on the base 2, which are a first positioning hole group 21 and a second positioning hole group 22. The two positioning holes in the first positioning hole group 21 are first positioning holes 211, and the two positioning holes in the second positioning hole group 22 are second positioning holes 221. Correspondingly, two sets of guide hole groups are provided on the support block 3, which are a first guide hole group 31 and a second guide hole group 32. The two guide holes in the first guide hole group 31 are first guide holes 311, and the two guide holes in the second guide hole group 32 are second guide holes 321. The interval between the two first positioning holes 211 is equal to the interval between the two first guide holes 311, corresponding to a display module 100 with a first pixel interval. The interval between the two second positioning holes 221 is equal to the interval between the two second guide holes 321, corresponding to a display module 100 with a second pixel interval. When maintaining the display module 100 with the first pixel interval, move the support block 3 to align the first guide holes 311 with the first positioning holes 211, and align the first positioning holes 211 with the front maintenance holes 101 in the display module 100 with the first pixel interval, so as to disassemble and maintain the display module 100 with the first pixel interval. When maintaining the display module 100 with the second pixel interval, move the support block 3 to align the second guide holes 321 with the second positioning holes 221, and align the second positioning holes 221 with the front maintenance holes 101 in the display module 100 with the second pixel interval, so as to disassemble and maintain the display module 100 with the second pixel interval.

[0058] Of course, in other embodiments, more sets of positioning hole groups can be provided on the base 2 according to needs, and correspondingly, more sets of guide hole groups can be provided on the support block 3.

[0059] In an embodiment, the base 2 is provided with a sliding groove 23, the sliding groove 23 is arranged between two spaced-apart positioning holes, and the sliding groove 23 extends along a direction perpendicular to the connecting line of the two spaced-apart positioning holes. The support block 3 is movably arranged in the sliding groove 23 through a connecting piece. At least two groups of guide hole groups are arranged along the extension direction of the sliding groove 23. The symmetry line of the two positioning holes in the at least two groups of positioning hole groups coincides, and the axis of the sliding groove 23 is located on the symmetry line of the two positioning holes. The support block 3 moves along the axis direction of the sliding groove 23. The guide holes in the guide hole groups arranged along the extension direction of the sliding groove 23 are aligned with the positioning holes in the positioning hole groups with the same spacing one by one, thereby realizing the front maintenance of the display module 100 with different pixel spacings.

[0060] As shown in Figure 5 In an embodiment, the sliding groove 23 is arranged as a stepped groove. The groove with a larger width in the stepped groove is arranged at one end of the base 2 away from the support block 3, and the groove with a smaller width in the stepped groove is arranged at one end of the base 2 close to the support block 3. The connecting piece includes a T-shaped pin 4. The top of the T-shaped pin 4 is clamped at the step of the stepped groove, and the bottom of the T-shaped pin 4 is connected with the support block 3. The T-shaped pin 4 moves along the extension direction of the stepped groove to drive the support block 3 to move. The bottom of the T-shaped pin 4 is provided with external threads, and the bottom of the support block 3 is provided with a threaded hole. The bottom of the T-shaped pin 4 extends into the groove with a smaller width from the groove with a larger width of the stepped groove. The end face of the end of the T-shaped pin 4 close to the bottom is clamped with the step of the stepped groove, and the bottom of the T-shaped pin 4 is threadedly connected with the threaded hole. The T-shaped pin 4 is equivalent to a sliding block in sliding connection with the sliding groove 23. When the support block 3 does not move, the sliding block can also ensure the stable connection of the support block 3 with the base 2.

[0061] Of course, in other embodiments, the connecting piece can also be arranged as a pulley. The pulley moves in the sliding groove 23, and after being moved to the position, the position of the support block 3 is fixed through a fixing piece.

[0062] In an embodiment, continuing to refer to Figure 2 and Figure 4 , the outer periphery of the base 2 is provided with a positioning groove 24, and the positioning groove 24 is located on the extension line of the connecting line of the two positioning holes in each positioning hole group. The outer periphery of the support block 3 is provided with an alignment groove 33, and the alignment groove 33 is located on the extension line of the connecting line of the two guide holes in each guide hole group. The alignment groove 33 is in butt joint with the positioning groove 24, so that the positioning hole group is aligned with the corresponding guide hole group. In order to quickly move the support block 3 to the position, whether the alignment groove 33 on the extension line of the connecting line of the two guide holes of the corresponding guide hole group according to the spacing between the two front maintenance holes 101 in the display module 100 is aligned with the positioning groove 24 of the base 2 is used to judge whether the support block 3 is moved to the position.

[0063] In an embodiment, all positioning holes in the at least two groups of positioning hole groups are located on the same line, the positioning groove 24 is provided with one, and each group of guide hole groups is provided with one alignment groove 33. That is, the second positioning hole 221 is located outside the first positioning hole 211, at this time the positioning groove 24 only needs to be provided with one, and the alignment groove 33 of the guide hole group corresponding to the front maintenance hole 101 of different intervals is aligned with the positioning groove 24 after moving with the support block 3, and disassembly and maintenance can be performed.

[0064] Of course, in other embodiments, the positioning holes in the at least two groups of positioning hole groups can also be spaced apart along a direction parallel to the extension direction of the sliding groove 23, and the lines of two positioning holes in the at least two groups of positioning hole groups are arranged in parallel. By controlling the moving distance of the support block 3, the guide holes in the at least two groups of guide hole groups are aligned with the positioning holes in the positioning hole groups corresponding thereto.

[0065] In an embodiment, as shown in Figure 3 and Figure 6 The end of the support block 3 close to the base 2 is provided with a positioning bead 5, and the base 2 is provided with at least two groups of moving-to-position identification holes 25. The positioning bead 5 moves to the moving-to-position identification hole 25, and the ball of the positioning bead 5 can be extended to cooperate with the moving-to-position identification hole 25. The at least two groups of moving-to-position identification holes 25 are used to position at least two moving positions of the support block 3 on the base 2. By providing the positioning bead 5, the precise positioning of the moving position of the support block 3 can be achieved.

[0066] Specifically, the positioning bead 5 includes a positioning column, a ball bead arranged at the end of the positioning column, and a spring arranged in the positioning column and connected with the ball bead. When the support block 3 moves, the ball bead is compressed into the positioning column. When the support block 3 moves to the position where the positioning column is aligned with the moving-to-position identification hole 25, the ball bead extends out of the positioning column under the elastic force of the spring and is clamped into the moving-to-position identification hole 25. At this time, the operator will hear the damping sound feedback, realizing the precise positioning of the support block 3, so that the precise butt joint of the guide hole, the positioning hole and the front maintenance hole 101 is realized, and the insertion of the maintenance thimble 1 is smoother when pressing the maintenance thimble 1, and the maintenance thimble 1 can be more accurately abutted with the maintenance part.

[0067] Exemplarily, the moving-to-position identification hole 25 is also provided with at least two groups, each group of moving-to-position identification hole 25 includes two hole positions, and correspondingly, the positioning bead 5 is also provided with two.

[0068] In an embodiment, as shown in Figure 7As shown, a guide spring 6 is arranged between the maintenance ejector pin 1 and the guide hole, the guide hole is arranged as a stepped hole, the inner diameter of the end of the stepped hole close to the base 2 is smaller than the inner diameter of the end of the stepped hole far from the base 2. The maintenance ejector pin 1 comprises a pressing head 11 and an ejector pin 12, the outer diameter of the pressing head 11 is larger than the outer diameter of the ejector pin 12, the guide spring 6 is arranged between the junction of the stepped hole and the pressing head 11. The guide spring 6 has a supporting effect on the maintenance ejector pin 1, when the maintenance ejector pin 1 is not pressed, the pressing head 11 is subjected to the elastic force of the guide spring 6, so that the end of the maintenance ejector pin 1 where the pressing head 11 is located pops out of the guide hole, so that the end of the maintenance ejector pin 1 far from the pressing head 11 is retracted in the guide hole, when the support block 3 moves on the base 2, the maintenance ejector pin 1 will not contact the base 2 to block the movement of the support block 3.

[0069] In an embodiment, the stepped hole comprises a first hole 301 and a second hole 302, the first hole 301 is arranged at the end of the support block 3 close to the base 2, the second hole 302 is arranged at the end of the support block 3 far from the base 2, a limiting hole 303 is further arranged between the first hole 301 and the second hole 302, the inner diameter of the limiting hole 303 is smaller than the inner diameter of the first hole 301; the ejector pin 12 comprises a connecting part 121, a limiting part 122 and an ejector pin body 123, the limiting part 122 is located between the connecting part 121 and the ejector pin body 123, the outer diameter of the connecting part 121 is smaller than the inner diameter of the limiting hole 303, the limiting part 122 is slidably arranged in the first hole 301, the outer diameter of the ejector pin body 123 is smaller than the outer diameter of the connecting part 121, the guide spring 6 is sleeved on the outer periphery of the connecting part 121, one end of the guide spring 6 is connected with the junction of the second hole 302 and the limiting hole 303, and the other end is connected with the pressing head 11; the junction of the first hole 301 and the limiting hole 303 abuts against the limiting part 122, which can limit the movement of the maintenance ejector pin 1 in the direction away from the base 2. The distance of the movement of the maintenance ejector pin 1 in the direction away from the base 2 under the elastic force of the guide spring 6 is limited by the limiting part 122, which prevents the maintenance ejector pin 1 from being separated from the guide hole.

[0070] Specifically, the side of the pressing head 11 close to the guide spring 6 is provided with a mounting hole and a mounting groove 111, the mounting hole is arranged at the center of the pressing head 11, one end of the connecting part 121 is in interference fit or threaded connection with the mounting hole, the mounting groove 111 is arranged in the circumferential direction of the mounting hole, one end of the guide spring 6 extends into the mounting groove 111 and is in interference fit with the circumferential wall of the mounting groove 111 close to the mounting hole or is connected with the groove bottom. The other end of the guide spring 6 is fixedly connected with the groove bottom of the second hole 302, the outer diameter of the limiting part 122 is matched with the inner diameter of the first hole 301, so that the limiting part 122 can slide in the first hole 301, thereby realizing the retraction of the ejector pin body 123 in the first hole 301 or the extension of the ejector pin body 123 from the first hole 301 to the front maintenance hole 101.

[0071] In an embodiment, the outer peripheral wall of the support block 3 is provided with an inwardly recessed holding portion 34, facilitating an operator to hold the holding portion 34 to move the support block 3 when disassembling and assembling the display module 100, and further improving the disassembling and assembling efficiency.

[0072] The display module 100 provided in the embodiment is disassembled and assembled by the front maintenance device, two maintenance pins 1 in each set of guide hole groups can pass through two front maintenance holes 101 of different intervals on the display module 100 with different pixel intervals, and force is applied to the disassembling shaft 1021, one of the maintenance pins 1 makes the disassembling shaft 1021 rotate, drives the first locking member 1022 and the second locking member 1023 to move in the direction of approaching each other, and realizes unlocking of the display module 100; the other maintenance pin 1 makes the disassembling shaft 1021 rotate in the opposite direction, drives the first locking member 1022 and the second locking member 1023 to move in the direction of moving away from each other, and realizes locking of the display module 100, thereby realizing front maintenance of the display module 100 with different pixel intervals, better universality, and lower maintenance cost.

[0073] The display screen provided in the embodiment adopts the display module 100, is more convenient to disassemble and assemble, and has lower maintenance cost.

[0074] The above is only a preferred embodiment of the present application, and for those skilled in the art, the specific embodiment and application range can be changed according to the idea of the present application, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. A front maintenance device for assembling and disassembling a display module from a housing; the display module includes a locking assembly (102) and two spaced-apart front maintenance holes (101), one of which is used to unlock the locking assembly (102), and the other is used to lock the locking assembly (102); characterized in that, The front maintenance device includes: Maintenance pin (1) is used to insert into the front maintenance hole (101) to apply a force perpendicular to the direction of the display module to the locking assembly (102); The base (2) is provided with at least two sets of positioning holes, each set of positioning holes includes two positioning holes spaced apart, and the distance between the two positioning holes in different sets of positioning holes is different. A support block (3) is movably disposed on the base (2). The support block (3) is provided with at least two sets of guide hole groups. Each set of guide hole groups includes two guide holes spaced apart. The distance between the two guide holes in different sets of guide holes is different. The two guide holes in each set of guide holes can be moved to correspond one-to-one with the two positioning holes in one set of positioning holes. A maintenance pin (1) is retractably disposed in each guide hole. Pressing the maintenance pin (1) can cause the maintenance pin (1) to pass through the positioning hole corresponding to it and insert into the front maintenance hole (101).

2. The front maintenance device according to claim 1, characterized in that, The base (2) is provided with a sliding groove (23), which is located between two spaced positioning holes and extends along a direction perpendicular to the line connecting the two spaced positioning holes. The support block (3) is movably disposed in the sliding groove (23) via a connector. At least two sets of the guide holes are spaced apart along the extension direction of the slide (23).

3. The front maintenance device according to claim 2, characterized in that, The slide (23) is configured as a stepped groove, with the wider groove in the stepped groove located at the end of the base (2) away from the support block (3), and the narrower groove in the stepped groove located at the end of the base (2) close to the support block (3); The connector includes a T-shaped pin (4), the top of which is engaged with the step of the stepped groove, and the bottom of which is connected to the support block (3). The movement of the T-shaped pin (4) along the extension direction of the stepped groove can drive the support block (3) to move.

4. The front maintenance device according to claim 1, characterized in that, The base (2) is provided with a positioning groove (24) on its outer periphery. The positioning groove (24) is located on the extension line of the line connecting two positioning holes in each group of positioning holes. The support block (3) is provided with an alignment groove (33) on its outer periphery. The alignment groove (33) is located on the extension line of the line connecting two guide holes in each group of guide holes. The alignment groove (33) engages with the positioning groove (24) to align the positioning hole group with its corresponding guide hole group.

5. The front maintenance device according to claim 4, characterized in that, All the positioning holes in at least two groups of positioning holes are located on the same straight line, and one positioning groove (24) is provided. Each group of guide holes is provided with one alignment groove (33).

6. The front maintenance device according to claim 1, characterized in that, The support block (3) is provided with a positioning bead (5) at one end near the base (2). The base (2) is provided with at least two sets of movement positioning identification holes (25). The positioning bead (5) moves to the movement positioning identification hole (25), and the ball of the positioning bead (5) can extend out and cooperate with the movement positioning identification hole (25). At least two sets of the movement positioning identification holes (25) are used to position the support block (3) at at least two movement positions on the base (2).

7. The front maintenance device according to any one of claims 1-6, characterized in that, A guide spring (6) is provided between the maintenance pin (1) and the guide hole. The guide hole is a stepped hole, and the inner diameter of the stepped hole at the end near the base (2) is smaller than the inner diameter at the end away from the base (2). The maintenance pin (1) includes a pressing head (11) and a pin (12). The outer diameter of the pressing head (11) is larger than the outer diameter of the pin (12). The guide spring (6) is located between the connection of the stepped hole and the pressing head (11).

8. The front maintenance device according to claim 7, characterized in that, The stepped hole includes a first hole (301) and a second hole (302). The first hole (301) is located at one end of the support block (3) near the base (2), and the second hole (302) is located at one end of the support block (3) away from the base (2). A limiting hole (303) is also provided between the first hole (301) and the second hole (302). The inner diameter of the limiting hole (303) is smaller than the inner diameter of the first hole (301). The ejector pin (12) includes a connecting part (121), a limiting part (122), and an ejector pin body (123). The limiting part (122) is located between the connecting part (121) and the ejector pin body (123). The outer diameter of the connecting part (121) is smaller than the inner diameter of the limiting hole (303). The limiting part (122) slides in the first hole (301). The outer diameter of the ejector pin body (123) is smaller than the outer diameter of the connecting part (121). The guide spring (6) is sleeved on the outer periphery of the connecting part (121). One end of the guide spring (6) is connected to the connection between the second hole (302) and the limiting hole (303), and the other end is connected to the pressing head (11). The connection between the first hole (301) and the limiting hole (303) abuts against the limiting part (122), which can restrict the maintenance ejector pin (1) from moving away from the base (2).

9. A display module, characterized in that, The front maintenance device as described in any one of claims 1-8 is used for disassembly and assembly. The locking assembly (102) includes a disassembly and assembly shaft (1021), a first locking member (1022), and a second locking member (1023). The disassembly and assembly shaft (1021) includes a transmission part and a maintenance part. The ends of the first locking member (1022) and the second locking member (1023) that are close to each other cooperate with the transmission part. When the disassembly and assembly shaft (1021) rotates, it can drive the first locking member (1022) and the second locking member (1023) to move in a direction that is close to or far away from each other. The front maintenance hole (101) is provided corresponding to the maintenance part.

10. The display module according to claim 9, characterized in that, The maintenance part includes an unlocking plane and a locking plane, which are set at a preset angle along the circumferential direction of the disassembly shaft (1021); of the two front maintenance holes (101), one is an unlocking hole and the other is a locking hole, the unlocking hole can correspond to the unlocking plane and the locking hole can correspond to the locking plane.

11. A display screen, characterized in that, It includes a housing and a display module as described in claim 9 or 10, wherein the housing and the display module are detachably connected.

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