Arc-shaped lock cylinder, arc-shaped lock, display screen mounting frame and display screen

Abstract

The application belongs to the technical field of display screen frame, and particularly relates to an arc-shaped lock cylinder, an arc-shaped lock and a display screen mounting frame, which comprises a base assembly, a wheel disc and a locking piece. The wheel disc is rotatably connected to the base assembly. The base assembly is provided with an inner cavity. The wheel disc is provided with a containing cavity. The base assembly and the locking piece are arranged in the containing cavity. The opening of the inner cavity and the containing cavity is oppositely arranged. The other end of the wheel disc is provided with a jack, which is communicated with the containing cavity. A plurality of protruding parts are arranged on the end face of one end of the wheel disc. The protruding height of the protruding parts in the axial direction of the wheel disc is different. The locking piece is slidably connected to the base assembly. A compression spring is arranged between the locking piece and the base. The compression spring can drive the locking piece to slide to abut against the bottom wall of the containing cavity. The sliding direction of the locking piece relative to the base and the axial direction of the wheel disc are arranged at an included angle of 0. The end of the locking piece close to the wheel disc is provided with a blind hole. The side wall of the blind hole is provided with a side hole. According to the application, the structure is simple, and the assembly is convenient.

Description

Technical Field

[0001] This invention belongs to the field of display accessory technology, and particularly relates to an arc-shaped lock core, an arc-shaped lock, a display screen mounting frame, and a display screen. Background Technology

[0002] Large-screen displays in shopping malls are typically assembled from multiple monitors, and existing large screens are generally flat; however, there is now a demand for curved screens, similar to curved displays. That is, the angles between the multiple monitors make the entire display screen curved.

[0003] Due to the limitations of the large screen area and the difficulty of production and transportation, current large screens are all assembled from multiple unit displays. Therefore, in existing technology, arc-shaped locks are usually installed on the assembly box of multiple unit displays to adjust the angle between the displays. The arc-shaped locks need to both adjust the angle and have a locking function.

[0004] However, in the existing technology, the lock cylinder structure of the arc lock that meets the adjustment angle and locking function of the arc lock is complex and has many parts, which makes the lock cylinder of the arc lock large in size and the assembly speed of multiple unit displays slow. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in view of the problem that the lock cylinder structure of the existing technology that meets the adjustment angle and locking function of the arc lock is complex and has many parts, the present invention provides an arc lock cylinder, an arc lock, a display screen mounting frame and a display screen.

[0006] To solve the above-mentioned technical problems, on the one hand, embodiments of the present invention provide an arc-shaped lock cylinder, including a base assembly, a wheel, and a locking member. The wheel is rotatably connected to the base assembly. The base assembly is provided with an internal cavity for accommodating the locking member. One end of the wheel is provided with a receiving cavity. The base assembly and the locking member are disposed in the receiving cavity. The openings of the internal cavity and the receiving cavity are arranged opposite to each other. The sum of the depths of the receiving cavity and the internal cavity is greater than the length of the locking member.

[0007] The other end of the wheel is provided with a socket, which is connected to the receiving cavity; the axial end face of the wheel away from the base assembly is provided with a plurality of protrusions arranged in the circumferential direction, and the protrusion height of the plurality of protrusions along the axial direction of the wheel is different.

[0008] The locking member is slidably connected to the base assembly. A compression spring is provided between the locking member and the base. When the compression spring changes from a compressed state to a free state, it can drive the locking member to slide against the bottom wall of the receiving cavity. The sliding direction of the locking member relative to the base has a non-zero angle with the axis of the wheel.

[0009] The locking member has a blind hole at its end near the wheel, the cross-sectional area of ​​the blind hole is smaller than the cross-sectional area of ​​the insertion hole, and the side wall of the blind hole has a side hole.

[0010] The base assembly includes a stud and a lock seat, the stud and the wheel are threadedly connected; one end of the stud is provided with a seat hole adapted to the lock seat, the lock seat is built into the seat hole, the built-in cavity is provided on the lock seat, and the locking member can slide in the built-in cavity; one end of the compression spring is fixed to the locking member, and the other end is fixed to the inner wall of the stud.

[0011] Optionally, the locking member includes a first post and a second post. The cross-sectional area of ​​the first post is smaller than the cross-sectional area of ​​the built-in cavity, and one end of the first post can slide within the built-in cavity. The second post is fixedly connected to the other end of the first post. The second post is located outside the built-in cavity and inside the receiving cavity. One end of the compression spring is fixed to the end face of the second post near the first post, and the other end of the compression spring is fixed to the base assembly. The blind hole is provided at the end of the second post near the wheel.

[0012] Optionally, the inner wall of the built-in cavity is provided with an inclined groove, the length direction of the inclined groove is the sliding direction of the locking member, the inclined groove has a non-zero angle with the axis of the wheel, and the locking member is provided with a sliding pin, which can slide in the inclined groove.

[0013] Optionally, the lock seat is a cuboid, and the inner cavity of the seat hole is cuboid; the first post is a cuboid, and the inner cavity is cuboid.

[0014] Optionally, the lock seat has an extension groove at the end away from the stud, the extension groove is located on the side wall of the lock seat near the top of the inclined groove, and the extension groove communicates with the internal cavity.

[0015] On the other hand, the present invention also provides an arc-shaped lock, including a connecting spring, a locking rod, and an arc-shaped lock cylinder as described in any one of the above. One end of the locking rod is provided with a wing plate, the wing plate protruding from the outer periphery of the locking rod, the cross-sectional area of ​​the wing plate being smaller than the cross-sectional area of ​​the blind hole, the connecting spring being sleeved on the outside of the locking rod, the wing plate being able to sequentially pass through the insertion hole and the blind hole, and after rotating at a preset angle, enter the side hole, the connecting spring being in a compressed state to provide a force to the locking rod away from the locking member.

[0016] On the other hand, the present invention also provides a display screen mounting frame, including multiple housings and the arc-shaped lock as described in claim 6. One of two adjacent housings is provided with a first mounting hole, and the other of two adjacent housings is provided with a second mounting hole and a protrusion. The base assembly is fixed in the first mounting hole, the locking rod is inserted into the second mounting hole, and the protrusion is provided on the side of the housing near the first mounting hole, so that when two adjacent housings are assembled, the protrusion contacts one of the protrusions. One end of the connecting spring is fixed to the corresponding housing, and the other end is fixed to the locking rod.

[0017] Optionally, the protrusion height of the plurality of protrusions along the axial direction of the wheel increases sequentially in the circumferential direction. The greater the protrusion height of the protrusion in contact with the protrusion, the smaller the assembly angle of the two adjacent housings. The outer circumferential surface of the wheel is provided with a plurality of limiting grooves of different lengths extending along the axial direction of the wheel. Each limiting groove is located radially outside the corresponding protrusion. The length of the limiting groove increases sequentially along the outer circle of the wheel. The greater the protrusion height of the protrusion, the longer the limiting groove on its radially outer side. A ball is provided in the housing corresponding to the stud. The depth of the limiting groove is less than the radius of the ball. When the limiting groove rotates to the ball, the ball engages in the limiting groove.

[0018] Optionally, a plurality of insertion rods are provided at the end of the stud away from the wheel, and a limit hole is provided on the bottom wall of the first mounting hole, into which the insertion rods are inserted.

[0019] In another aspect, the present invention also provides a display screen, comprising a plurality of unit display screens and a display screen mounting frame as described in claim 8 or 9, wherein each unit display screen is fixed on a corresponding housing.

[0020] According to embodiments of the present invention, the arc-shaped lock cylinder, the arc-shaped lock, and the display screen mounting frame have few components, including only a base assembly, a wheel, and a locking component. The locking component is built into the base assembly, and the base assembly and the locking component are then built into the wheel. Its volume is only the same as that of the base assembly and the wheel, resulting in a simple structure and small size. Attached Figure Description

[0021] Figure 1 This is a schematic diagram provided in the first embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the explosion of the arc-shaped lock cylinder provided in the first embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the resonant unit of the arc-shaped lock cylinder provided in the first embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the resonant unit of the arc-shaped lock cylinder provided in the first embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the locking rod of the arc-shaped lock provided in the second embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the actual installation of the arc-shaped lock provided in the second embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of an installation state of the display screen mounting frame provided in the third embodiment of the present invention;

[0028] Figure 8 yes Figure 7 A magnified view of a portion of the image;

[0029] Figure 9 This is a schematic diagram of another installation state of the display screen mounting frame provided in the third embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the assembly state of the two boxes provided in the third embodiment of the present invention.

[0031] The reference numerals in the accompanying drawings are as follows:

[0032] 1. Base assembly; 10. Lock seat; 101. Slanted groove; 102. Internal cavity; 11. Stud; 12. Wheel; 121. Limiting groove; 122. Insertion hole; 123. Receiving cavity; 13. Locking element; 131. First post; 132. Second post; 133. Blind hole; 134. Side hole; 14. Compression spring; 15. Protrusion; 17. Insertion rod; 18. Extension groove; 2. Locking rod; 21. Wing plate; 22. Connecting spring; 3. Housing; 31. Protrusion; 4. Sliding pin; 5. First mounting hole; 6. Second mounting hole. Detailed Implementation

[0033] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the invention.

[0034] First Embodiment

[0035] like Figures 1 to 4As shown, the first embodiment of the present invention provides an arc-shaped lock cylinder, including a base assembly 1, a wheel 12, and a locking member 13. The base assembly 1, the wheel 12, and the locking member 13 are arranged along the axial direction of the wheel, and the wheel 12 is rotatably connected to the base assembly 1. The base assembly 1 is provided with an internal cavity 102 for accommodating the locking member 13, and one end of the wheel 12 is provided with a receiving cavity 123. The base assembly 1 and the locking member 13 are housed within the receiving cavity 123. The openings of the internal cavity 102 and the receiving cavity 123 are arranged opposite to each other, and the sum of the depths of the receiving cavity 123 and the internal cavity 102 is greater than the length of the locking member 13. The locking member 13 is slidably connected to the base assembly 1. A compression spring 14 is provided between the locking member 13 and the base assembly 1. When the compression spring 14 changes from the compressed state to the uncompressed state, it can drive the locking member 13 to slide against the bottom wall of the receiving cavity 123. The sliding direction of the locking member 13 relative to the base assembly 1 is set with a non-zero angle with the axial direction of the wheel 12.

[0036] The other end of the wheel 12 is provided with a socket 122 for inserting the locking rod 2, and the socket 122 is connected to the receiving cavity 123; a number of protrusions 15 are provided on the end face of the wheel 12 away from the base assembly 1, and the height of the protrusions 15 along the axial direction of the wheel 12 is different.

[0037] First, the compression spring 14 provides the force for the locking member 13 to slide along the axial direction of the wheel 12, so that one end face of the locking member 13 always abuts against the bottom wall of the receiving cavity 123. Because the receiving cavity 123 and the inner cavity 102 may overlap or overlap to a certain depth in the axial direction of the wheel 12, that is, the base assembly 1 is located at a certain depth position of the receiving cavity 123, and one end face of the locking member 13 is always in contact with the bottom wall of the receiving cavity 123. At the same time, the wheel 12 is rotated around the central axis of the wheel 12, which changes the protrusion 15 on the wheel 12. The protrusion 15 with different protrusion heights corresponds to different adjustment angles. The wheel 12 is rotated to the desired protrusion 15.

[0038] The locking member 13 has a blind hole 133 at the end near the wheel 12. The cross-sectional area of ​​the blind hole 133 is smaller than that of the insertion hole 122. The area of ​​the insertion hole 122 is larger than that of the blind hole 133, making it easy for the locking rod 2 to enter the blind hole 133 from the insertion hole 122. The side wall of the blind hole 133 has a side hole 134, which is connected to the blind hole 133.

[0039] The working process of the lock cylinder is as follows: When the angle needs to be adjusted, the hand rotates the wheel 12 so that a certain protrusion 15 of the wheel 12 rotates to the required angle and the lock rod 2 is inserted. One end of the lock rod 2 has a wing plate 21, that is, one end of the lock rod 2 is provided with a wing plate 21 protruding from the outer circumference of the lock rod 2. After the wing plate 21 enters the insertion hole 122, it is inserted into the bottom of the blind hole 133. The lock rod 2 is rotated so that the wing plate 21 enters the side hole 134. At this time, the lock rod 2 locks the lock cylinder. That is, after the wing plate 21 of the lock rod 2 enters the lock cylinder, the position of the locking member 13 no longer changes.

[0040] In this embodiment, the locking member 13 specifically includes a first post 131 and a second post 132. The cross-sectional area of ​​the first post 131 is smaller than the cross-sectional area of ​​the built-in cavity 102. One end of the first post 131 slides within the built-in cavity 102. The second post 132 is fixedly connected to the other end of the first post 131. The second post 132 is located outside the built-in cavity 102 and inside the receiving cavity 123. One end of the compression spring 14 is fixed to the end face of the second post 132 near the first post 131, and the other end of the compression spring 14 is fixed to the base assembly 1. A blind hole 133 is provided at the end of the second post 132 near the wheel 12.

[0041] In this embodiment, the base assembly 1 includes a stud 11 and a lock seat 10. The stud 11 and the wheel 12 are threadedly connected. One end of the stud 11 is provided with a seat hole adapted to the lock seat 10. The lock seat 10 is built into the seat hole. An internal cavity 102 is provided on the lock seat 10. The locking member 13 slides in the internal cavity 102. One end of the compression spring 14 is fixed to the locking member 13, and the other end is fixed to the inner wall of the stud 11.

[0042] In this embodiment, the inner wall of the built-in cavity 102 is provided with a groove 101. The length direction of the groove 101 is the sliding direction of the locking member 13. The groove 101 and the axial direction of the wheel 12 are provided with a non-zero angle. The locking member 13 is provided with a sliding pin 4, which slides in the groove 101. When the angle of the arc lock changes, that is, when the wheel 12 rotates, the locking member 13 (first column 131) is displaced along the direction of the groove 101 under the action of the compression spring 14. The blind hole 133 is displaced not only in the axial direction of the wheel 12, but also in the axial direction perpendicular to the wheel 12, so that the locking rod 2, which tilts with the tilted box 3, is more easily inserted into the blind hole 133. That is, when one box 3 is tilted relative to another box 3, the blind hole 133 is aligned with the locking rod 2 as much as possible.

[0043] In this embodiment, the lock base 10 is a cuboid, and the inner cavity of the corresponding seat hole is cuboid; the first post 131 is a cuboid, and the inner cavity 102 is cuboid.

[0044] In this embodiment, the lock seat 10 is provided with an extension groove 18 at the end away from the stud 11. The extension groove 18 is located on the side wall of the lock seat 10 near the top of the inclined groove 101 and is connected to the internal cavity 102.

[0045] Second Embodiment

[0046] like Figure 5 and Figure 6 As shown, the second embodiment of the present invention also provides an arc-shaped lock, including a connecting spring 22, a locking rod 2, and an arc-shaped lock cylinder of any of the above embodiments. One end of the locking rod 2 is provided with a wing plate 21, which protrudes from the outer periphery of the locking rod 2. The cross-sectional area of ​​the wing plate 21 is smaller than the cross-sectional area of ​​the blind hole 133, so that the outline of the blind hole 133 is outside the outline of the wing plate 21. This arrangement allows the locking rod 2 and its wing plate 21 to be easily inserted into the blind hole 133 at different angles. The connecting spring 22 is sleeved on the outside of the locking rod 2. When the wing plate 21 is inserted into the insertion hole 122 and the blind hole 133 in sequence and then rotated to allow the wing plate 21 to enter the side hole 134, the connecting spring 22 is in a compressed state to provide a force to the locking rod 2 away from the locking member 13.

[0047] Third Embodiment

[0048] like Figures 7 to 10 As shown, the third embodiment of the present invention also provides a display screen mounting frame, including multiple housings 3 and the arc-shaped lock in the above embodiment. One of two adjacent housings 3 is provided with a first mounting hole 5, and a stud 11 is fixed in the first mounting hole 5. The other of the two adjacent housings 3 is provided with a second mounting hole 6 and a protrusion 31. The locking rod 2 is inserted into the second mounting hole 6. The protrusion 31 is provided on the side of the housing 3 near the first mounting hole 5, so that when two adjacent housings 3 are assembled, the protrusion 31 contacts one of the protrusions 15. At this time, one end of the connecting spring 22 is connected to the corresponding housing 3, and the other end is fixed to the locking rod 2. When the locking rod 2 enters the side hole 134, the locking rod 2 is released by hand, and the connecting spring 22 applies a force away from the arc-shaped lock cylinder to the locking rod 2, so that the locking rod 2 is firmly locked into the side hole 134, realizing the locking. When the angle needs to be adjusted, a person applies force to the locking bar 2 towards the arc-shaped lock core, compresses the connecting spring 22, and rotates the locking bar 2 until the wing plate 21 enters the blind hole 133. Then, the locking bar 2 is pulled out, and the wheel 12 is rotated to the required angle.

[0049] In this embodiment, the height of the protruding part 15 from the wheel disk gradually increases as the corresponding angle decreases; that is, the protrusion height of the multiple protrusions 15 along the axial direction of the wheel disk 12 increases sequentially in the circumferential direction. The greater the protrusion height of the protrusion 15 that contacts the protrusion 31, the smaller the assembly angle of the two adjacent boxes 3. The outer circumferential surface of the wheel disk 12 is provided with multiple limiting grooves 121 of different lengths extending along the axial direction of the wheel disk 12. Each limiting groove 121 is located radially outward of the corresponding protrusion 15. The length of the limiting groove 121 increases sequentially along the outer circle of the wheel disk. The greater the protrusion height of the protrusion 15, the smaller its radially outward... The longer the side limiting groove 121, the more limiting grooves 121 of different lengths are provided on the outer peripheral surface of the wheel 12. The limiting groove 121 extends from one end of the wheel 12 near the stud 11 to the other end. The length of the limiting groove 121 gradually increases as the corresponding angle decreases. A ball is provided in the housing 3 corresponding to the stud 11. The depth of the limiting groove 121 is less than the radius of the ball. When the limiting groove 121 rotates to the ball, the ball is engaged in the limiting groove 121. Since the ball is only partially submerged in the limiting groove 121, when rotating to the next angle, the ball can easily move out of the limiting groove 121 and into the next limiting groove 121.

[0050] The end of the stud 11 away from the wheel 12 is provided with several insertion rods 17. The bottom wall of the first mounting hole 5 is provided with a limit hole, and the insertion rods 17 are inserted into the limit hole. The stud 11 can be connected to the housing 3 by inserting the insertion rods 17 into the limit hole. Of course, it can also be connected by welding, or by simultaneously inserting bolts into the housing 3 and the stud 11. No matter which connection method is used, the stud 11 will not rotate relative to the housing 3.

[0051] As shown in the figure, the two enclosures 3 can be located on the same plane, making the display a flat, large screen. Of course, the two enclosures 3 can also have a non-zero angle, making the display curved. When the two enclosures 3 have an angle, the enclosure 3 with the curved lock is used as the reference enclosure 3, and the other enclosure 3 is an inclined enclosure 3. The central axis of the locking rod 2 on the inclined enclosure 3 and the central axis of the blind hole 133 have an angle. At this time, due to the existence of the inclined groove 101, the blind hole 133 is aligned with the locking rod 2 as much as possible, so that the angle between the center of the blind hole 133 and the central axis of the locking rod 2 is small. In addition, the cross-sectional area of ​​the blind hole 133 is larger than the cross-sectional area of ​​the wing plate 21, so that the blind hole 133 has a margin relative to the locking rod 2 to facilitate the insertion of the locking rod 2. Therefore, within a certain angle range, the locking rod 2 can be inserted into the blind hole 133 and rotated into the side hole 134 to complete the locking of the curved lock.

[0052] Fourth embodiment

[0053] The arc-shaped lock cylinder of the fourth embodiment of the present invention differs from that of the first embodiment in that the base assembly 1 can be simply a stud 11, the internal cavity 102 is disposed at one end of the stud 11, and the inclined groove 101 is provided on the cavity wall of the internal cavity 102. One end of the compression spring 14 is fixed to the cavity wall of the internal cavity 102, and the other end is fixed to the locking member 13. The locking member 13 is built into the internal cavity 102, and the structure is simpler.

[0054] Fifth embodiment

[0055] The fifth embodiment of the present invention discloses a display screen, including multiple unit display screens and the display screen mounting frame described in the above embodiments, wherein each unit display screen is fixed on the corresponding housing.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An arc-shaped lock cylinder, characterized in that, Includes base assembly, wheel, and locking mechanism; The wheel is rotatably connected to the base assembly, the base assembly is provided with an internal cavity for accommodating the locking member, one end of the wheel is provided with an accommodating cavity, the base assembly and the locking member are disposed in the accommodating cavity, the openings of the internal cavity and the accommodating cavity are arranged opposite to each other, and the sum of the depths of the accommodating cavity and the internal cavity is greater than the length of the locking member; The other end of the wheel is provided with a socket, which is connected to the receiving cavity; the axial end face of the wheel away from the base assembly is provided with a plurality of protrusions arranged in the circumferential direction, and the protrusion height of the plurality of protrusions along the axial direction of the wheel is different. The locking member is slidably connected to the base assembly, and a compression spring is provided between the locking member and the base assembly. When the compression spring changes from a compressed state to a free state, it can drive the locking member to slide against the bottom wall of the receiving cavity. The sliding direction of the locking member relative to the base assembly has a non-zero angle with the axis of the wheel. The locking member has a blind hole at its end near the wheel, the cross-sectional area of ​​the blind hole is smaller than the cross-sectional area of ​​the insertion hole, and the side wall of the blind hole has a side hole. The base assembly includes a stud and a lock seat, the stud and the wheel are threadedly connected; one end of the stud is provided with a seat hole adapted to the lock seat, the lock seat is built into the seat hole, the built-in cavity is provided on the lock seat, and the locking member can slide in the built-in cavity; one end of the compression spring is fixed to the locking member, and the other end is fixed to the inner wall of the stud; The inner wall of the built-in cavity is provided with an inclined groove, the length direction of which is the sliding direction of the locking member. The inclined groove has a non-zero angle with the axis of the wheel. The locking member is provided with a sliding pin, which can slide within the inclined groove.

2. The arc-shaped lock cylinder according to claim 1, characterized in that, The locking member includes a first post and a second post. The cross-sectional area of ​​the first post is smaller than the cross-sectional area of ​​the built-in cavity, and one end of the first post can slide within the built-in cavity. The second column is fixedly connected to the other end of the first column. The second column is located outside the built-in cavity and inside the receiving cavity. One end of the compression spring is fixed to the end face of the second column near the first column, and the other end of the compression spring is fixed to the base assembly. The blind hole is provided at the end of the second column near the wheel.

3. The arc-shaped lock cylinder according to claim 2, characterized in that, The lock base is a cuboid, and the inner cavity of the seat hole is also cuboid; the first post is a cuboid, and the inner cavity is also cuboid.

4. The arc-shaped lock cylinder according to claim 1, characterized in that, The lock seat has an extension groove at one end away from the stud. The extension groove is located on the side wall of the lock seat near the top of the inclined groove and communicates with the internal cavity.

5. An arc-shaped lock, characterized in that, The lock includes a connecting spring, a locking rod, and an arc-shaped lock cylinder as described in any one of claims 1-4. One end of the locking rod is provided with a wing plate, which protrudes from the outer periphery of the locking rod. The cross-sectional area of ​​the wing plate is smaller than the cross-sectional area of ​​the blind hole. The connecting spring is sleeved on the outside of the locking rod. The wing plate can sequentially pass through the insertion hole and the blind hole, and after rotating at a preset angle, it enters the side hole. The connecting spring is in a compressed state to provide a force to the locking rod away from the locking member.

6. A display screen mounting frame, characterized in that, The device includes multiple housings and the arc-shaped lock as described in claim 5. One of two adjacent housings is provided with a first mounting hole, and the other of two adjacent housings is provided with a second mounting hole and a protrusion. The base assembly is fixed in the first mounting hole, and the locking rod is inserted into the second mounting hole. The protrusion is provided on the side of the housing near the first mounting hole, so that when two adjacent housings are assembled, the protrusion contacts one of the protrusions. One end of the connecting spring is fixed to the corresponding housing, and the other end is fixed to the locking rod.

7. The display screen mounting frame according to claim 6, characterized in that, The protrusion height of the plurality of protrusions along the axial direction of the wheel increases sequentially in the circumferential direction. The greater the protrusion height of the protrusion in contact with the protrusion, the smaller the assembly angle of the two adjacent housings. The outer circumferential surface of the wheel is provided with a plurality of limiting grooves of different lengths extending along the axial direction of the wheel. Each limiting groove is located radially outside the corresponding protrusion. The length of the limiting groove increases sequentially along the outer circle of the wheel. The greater the protrusion height of the protrusion, the longer the limiting groove on its radially outer side. A ball is provided in the housing corresponding to the stud. The depth of the limiting groove is less than the radius of the ball. When the limiting groove rotates to the ball, the ball engages in the limiting groove.

8. The display screen mounting frame according to claim 7, characterized in that, The stud is provided with a plurality of insertion rods at the end away from the wheel, and the bottom wall of the first mounting hole is provided with a limiting hole, and the insertion rods are inserted into the limiting hole.

9. A display screen, characterized in that, It includes multiple unit displays and the display mounting frame as described in claim 7 or 8, wherein each unit display is fixed to the corresponding housing.

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