WO2024041410A1 - 一种背架连接结构及背架装置 - Google Patents

一种背架连接结构及背架装置 Download PDF

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Publication number
WO2024041410A1
WO2024041410A1 PCT/CN2023/112896 CN2023112896W WO2024041410A1 WO 2024041410 A1 WO2024041410 A1 WO 2024041410A1 CN 2023112896 W CN2023112896 W CN 2023112896W WO 2024041410 A1 WO2024041410 A1 WO 2024041410A1
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WO
WIPO (PCT)
Prior art keywords
limiting
back frame
column
threaded
connection structure
Prior art date
Application number
PCT/CN2023/112896
Other languages
English (en)
French (fr)
Inventor
张鉴雄
肖玉龙
陈秋生
Original Assignee
深圳市洲明科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 深圳市洲明科技股份有限公司 filed Critical 深圳市洲明科技股份有限公司
Publication of WO2024041410A1 publication Critical patent/WO2024041410A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/105—Telescoping systems locking in discrete positions, e.g. in extreme extended position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Definitions

  • the present application relates to the field of LED display technology, and in particular to a backframe connection structure and a backframe device.
  • LED display screen and back frame device need to be frequently disassembled and assembled.
  • disassembly and assembly operations of the current LED display screen and back frame device are cumbersome, which brings a lot of inconvenience to the staff's disassembly and assembly work.
  • a backframe connection structure includes a screw post and a rotary connector assembly.
  • the screw post and the rotary connector assembly are used to be respectively provided on
  • the outer circumferential surface of the threaded column is alternately provided with first smooth areas and first threaded areas.
  • the rotary connector assembly includes a nut limiting post and a rotating nut.
  • the inner circumference of the rotating nut The surface is alternately provided with second smooth areas and second threaded areas, and the rotating nut can rotate around the nut limiting post to switch the area where the inner circumferential surface of the rotating nut aligns with the outer circumferential surface of the screw thread column;
  • the second smooth area when the second smooth area is directly opposite to the first threaded area, the second threaded area is directly opposite to the first smooth area, so that the threaded column and the rotating nut can be inserted or connected. separation;
  • the second threaded area and the first threaded area are threadedly engaged with each other when aligned.
  • the back frame connection structure further includes a limiting component, and the limiting component is detachably plug-fitted with the rotating nut to limit the rotating nut between the second threaded area and The first threaded area is a threaded position.
  • one end of the rotating nut is provided with a limiting groove extending in the axial direction.
  • the limiting assembly includes a sliding ejector rod and an ejector rod spring.
  • the sliding ejector rod is used to be movably located on the In the back frame module, the ejector spring can drive the sliding ejector to axially engage with the limiting groove.
  • the limiting assembly further includes an unlocking push ring, which is movably provided on the back frame module and connected with the sliding ejector rod to drive the sliding ejector rod.
  • the rod is away from the limiting groove.
  • the limiting assembly further includes an ejector pin cover, the ejector pin cover is used to be fixedly connected to the back frame module, the ejector pin cover is provided with an ejector pin sliding groove, and the ejector pin
  • the sliding groove allows the sliding ejector rod to slide within a preset stroke, and the ejector rod spring is located between an end of the sliding ejector rod away from the limiting groove and the groove wall of the ejector rod sliding groove.
  • first threaded area and the second threaded area are both provided with multi-thread threads, and the multi-thread threads of the first threaded area and the second threaded area cooperate with each other.
  • the angular span of the second threaded area continuously distributed in the circumferential direction of the rotating nut is greater than or equal to 30°.
  • the rotary joint assembly further includes a limiting column fixed block fixed on the back frame module, and the nut limiting column includes a first column and a second column fixed to each other. , one end of the first column away from the second column is fixed on the limiting column fixed block, and the diameter of the second column is larger than the diameter of the first column, so that the second column A rotational slot for clamping the rotating nut is formed between the cylinder and the limiting column fixed block, and the rotating slot allows the rotating nut to rotate around the first cylinder.
  • the rotating nut is provided with a limiting protrusion in a radial direction that rotates with the rotating slot.
  • a torsion spring assembly groove is formed between an end of the first column away from the second column and the limiting column fixed block to assemble a return torsion spring.
  • a first limiting column and a second limiting column are respectively formed at both ends of the torsion spring.
  • the first limiting column cooperates with the limiting protrusion in the circumferential direction
  • the second limiting column cooperates with the limiting protrusion in the circumferential direction.
  • the limiting column fixed block is limited and matched in the circumferential direction.
  • a buffer rubber block is fixed on an end of the second cylinder away from the first cylinder.
  • the minimum distance in the radial direction between the second cylinder and the inner wall of the rotating nut is greater than the minimum distance in the radial direction between the first cylinder and the limiting bump.
  • the projections of the limiting column fixed block and the limiting assembly on the back frame module have at least a partial overlap area, and the limiting column fixed block and the limiting column fixed block are at least partially overlapped. The overlapping areas are locked together with the back frame module.
  • the backframe device includes a plurality of backframe modules and a plurality of backframe connection structures as described in any one of the above embodiments. Two adjacent backframe modules Connected through the back frame connection structure.
  • the back frame device further includes a supporting ground beam.
  • the supporting ground beam is provided with a plurality of installation positions for correspondingly installing the screw posts.
  • At least one of the back frame modules passes through a The back frame connection structure is fastened to one of the installation positions.
  • Figure 1 is a schematic structural diagram of a backframe connection structure provided according to some embodiments of the present application.
  • FIG. 2 is a schematic structural diagram of the screw posts of the back frame connection structure shown in FIG. 1 in some embodiments.
  • Figure 3 is an exploded schematic diagram of the rotary joint assembly and the limiting assembly of the back frame connection structure shown in Figure 2 in some embodiments.
  • Figure 4 is a schematic diagram of the axial side of the ejector pin cover, sliding ejector pin and ejector pin spring of the limiting component in the back frame connection structure shown in Figure 3 in some embodiments.
  • FIG. 5 is a top view of the rotating nut and nut limiting post included in the back frame connection structure shown in FIG. 3 in some embodiments.
  • Figure 6 is a cross-sectional view of the rotating nut and nut limiting post shown in Figure 5 along line A-A in some embodiments.
  • Figure 7 is a cross-sectional view of the rotating nut shown in Figure 5 along line B-B in some embodiments.
  • FIG. 8 is a partial enlarged view of the rotating nut and nut limiting post shown in FIG. 6 at position C in some embodiments.
  • Figure 9 is a schematic structural diagram of a backrest device in use according to some embodiments of the present application.
  • Figure 10 is a schematic diagram of the connection between two backframe modules included in the backframe device shown in Figure 9 in some embodiments.
  • Label description 100. Back frame connection structure; 110. Threaded column; 111. First threaded area; 112. First smooth area; 120. Rotary joint assembly; 121. Nut limiting column; 1211. First cylinder ; 1212. Second cylinder; 122. Rotating nut; 1221. Second threaded area; 1222. Second smooth area; 1223. Limiting groove; 1224. Limiting bump; 123. Limiting column fixed block; 124.
  • Return spring; 1241 first limit column; 1242, second limit column; 125, buffer rubber block; 130, limit component; 131, sliding ejector rod; 132, ejector rod spring; 133, unlocking push ring; 134 , Push rod cover; 1341, push rod sliding groove; 200, first rod body; 300, second rod body; 400, back frame device; 410, back frame module; 411, rod body; 420, supporting ground beam; 500, display screen ; 11. The first screw; 12. The second screw; 13. The third screw; 14. The fourth screw.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying the relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • the meaning of “plurality” is at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • first and second features are in direct contact, or The first and second characteristics are in indirect contact through an intermediary.
  • the terms “above”, “above” and “above” the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.
  • the backframe connection structure 100 includes a screw post 110 and a rotary connector assembly 120 .
  • the screw post 110 and the rotary connector assembly are 120 is used to be respectively provided on two adjacent back frame modules 410, so that the back frame modules 410 can be easily disassembled and assembled.
  • the outer peripheral surfaces of the threaded posts 110 are alternately arranged There is a first threaded area 111 and a first smooth area 112.
  • the rotary connector assembly 120 includes a nut limiting post 121 and a rotating nut 122.
  • the inner circumferential surface of the rotating nut 122 is alternately provided with second threaded areas 1221 and second smooth areas 1222. .
  • the rotating nut 122 can rotate around the nut limiting post 121 to switch the area where the inner circumferential surface of the rotating nut 122 aligns with the outer circumferential surface of the threaded post 110 .
  • the second smooth area 1222 is directly opposite to the first threaded area 111
  • the second threaded area 1221 is directly opposite to the first smooth area 112 for insertion or separation of the threaded column 110 and the rotating nut 122.
  • the second threaded area 1221 and the first threaded area 111 are threadedly engaged with each other when aligned.
  • the backrest module 410 includes a rod 411 , and the rod 411 of one of the adjacent backrack modules 410 is recorded as the first rod 200 .
  • the rod body 411 of the other back frame module 410 is marked as the second rod body 300, and the back frame connection structure 100 may be connected between the first rod body 200 and the second rod body 300.
  • the above-mentioned threaded column 110 can be fixed on the first rod body 200 through a threaded connection, that is, the threaded column After the fixed end of 110 is placed in the corresponding first rod body 200, it is fastened to one end of the first rod body 200 through a threaded connection.
  • the nut limiting post 121 of the rotary joint assembly 120 can also be fixed on one end of the second rod body 300 through threaded connection.
  • the screw post 110 at one end of the first rod body 200 and fixing the rotary joint assembly 120 at one end of the second rod body 300, the one end of the first rod body 200 and the one end of the second rod body 300 can be disassembled.
  • it can be realized by turning the rotating nut 122, which improves the convenience of disassembly and assembly of the back frame module 410.
  • the backframe connection structure 100 further includes a limiting component 130 .
  • the limiting component 130 is detachably plug-fitted with the rotating nut 122 to limit the rotating nut 122 to the second position.
  • the threaded area 1221 is threadedly engaged with the first threaded area 111 . Therefore, through the limiting effect of the limiting component 130 on the rotating nut 122, the connection between the first rod body 200 and the second rod body 300 is made more stable.
  • control limiting component 130 When disassembly is required, the control limiting component 130 is separated from the rotating nut 122, and the rotating nut 122 can be rotated by force, thereby facilitating the disassembly of the first rod body 200 and the second rod body 300.
  • one end of the rotating nut 122 is provided with a limiting groove 1223 extending in the axial direction.
  • the limiting component 130 includes a sliding ejector rod 131 and an ejector rod spring 132 .
  • the sliding ejector pin 131 is movably disposed on the back frame module 410 , and the ejector pin spring 132 can drive the sliding ejector pin 131 to axially engage with the limiting groove 1223 . Therefore, through the elastic retaining effect of the push rod spring 132, the sliding push rod 131 can always maintain snap fit with the limit groove 1223 without external force or relatively small vibration of the limiting component 130, thereby improving the Stability of connection between adjacent backrack modules 410.
  • the sliding push rod 131 may be movably provided on the second rod body 300 .
  • the limiting component 130 also includes an unlocking push ring 133.
  • the unlocking push ring 133 It is used to be movably provided on the back frame module 410 and connected with the sliding ejector 131 to drive the sliding ejector 131 away from the limiting groove 1223 . Therefore, when the adjacent back frame module 410 needs to be disassembled, the movement of the unlocking push ring 133 can be driven to separate the sliding ejector rod 131 from the limiting groove 1223, and then the rotating nut 122 can be rotated relative to the threaded column 110 to a position for disassembly. .
  • the unlocking push ring 133 can be movably sleeved on the second rod body 300 to move axially along the second rod body 300 .
  • the movement of the unlocking push ring 133 is guided and limited by the second rod body 300 , so that the unlocking push ring 133 drives the sliding ejector rod 131 to separate from the limiting groove 1223 .
  • the rotating nut 122 is provided with an axially extending limiting groove 1223 at one end adjacent to the nut limiting column 121.
  • the limiting component 130 includes a sliding ejector rod 131,
  • the push rod spring 132 drives the sliding push rod 131 to axially engage with the limiting groove 1223, and the unlocking push ring 133 drives the sliding push rod 131 away from the limiting groove 1223.
  • the limiting component 130 can be fixed on the second rod body 300 .
  • a limiting component 130 can be provided on opposite sides of the second rod body 300 .
  • one end of the rotating nut 122 adjacent to the nut limiting post 121 can be There are two limiting grooves 1223 arranged oppositely. It can be understood that since the unlocking push ring 133 is sleeved on the second rod body 300, the two limiting components 130 can share the same unlocking push ring 133, so that the unlocking push ring 133 can simultaneously drive the sliding ejector rods 131 of the two limiting components 130 away.
  • the corresponding limit groove 1223 realizes the synchronous limit unlocking of the two limit components 130 .
  • the limiting assembly 130 further includes an ejector cover 134 .
  • the ejector cover 134 is used to be fixedly connected to the back frame module 410 .
  • the ejector pin cover 134 is provided with an ejector pin sliding groove 1341.
  • the ejector pin sliding groove 1341 allows the sliding ejector pin 131 to slide within the preset stroke.
  • the ejector pin spring 132 is located at an end of the sliding ejector pin 131 away from the limiting groove 1223 and the ejector pin sliding groove. 1341 between the groove walls.
  • the ejector pin cover 134 is fixedly connected to the back frame module 410, so that the sliding ejector pin 131 and the ejector pin spring 132 have a relatively stable position on the back frame module 410, and the ejector pin spring 132 can stably drive the sliding ejector pin.
  • 131 is plugged into the limiting groove 1223, and the unlocking push ring 133 can stably drive the sliding ejector 131 to separate from the limiting groove 1223.
  • the push rod cover 134 can be fixed on the second rod body 300 . It can be understood that each position where the sliding ejector 131 slides within the preset stroke includes a position where it is plug-fitted with the limiting groove 1223 and a position where it is separated from the limiting groove 1223 .
  • the limiting component 130 can also include an ejector pin cover 134, and the ejector pin cover 134 is away from the side of the unlocking push ring 133.
  • the surface is provided with a push rod sliding groove 1341 for accommodating the sliding push rod 131 to slide along the axial direction within the preset stroke.
  • a push rod sliding groove 1341 is provided between the end of the sliding push rod 131 away from the limiting groove 1223 and the groove wall of the push rod sliding groove 1341.
  • Rod spring 132 is provided between the end of the sliding push rod 131 away from the limiting groove 1223 and the groove wall of the push rod sliding groove 1341.
  • the ejector pin cover 134 can be fixed on the second rod body 300, so that the sliding ejector pin 131 can be squeezed and driven by the elastic force of the ejector pin spring 132 without the action of other external forces. move to perform axial snap fit with the corresponding limiting groove 1223.
  • the unlocking push ring 133 is sleeved on the second rod body 300, and the unlocking push ring 133 is tightly connected with the sliding ejector 131, so the unlocking push ring 133 can easily push the sliding ejector 131 to move.
  • This fastening connection can be realized by the first screw 11, that is, the sliding ejector rod 131 is fastened to the unlocking push ring 133 through the first screw 11, so that when the unlocking push ring 133 is pushed by an external force, the sliding ejector rod 131 is driven away from the corresponding unlocking push ring 133.
  • the limit slot 1223 moves to realize corresponding limit unlocking.
  • first threaded area 111 and the second threaded area 1221 may both be provided with multi-threads, and the first threaded area 111 and the second threaded area 1221 are Multiple threads work together. It can be understood that the stroke of the multi-thread thread is larger than the stroke of the single thread of the same specification, enabling faster locking between the rotating nut 122 and the threaded column 110 .
  • the multi-thread thread may be a double-thread thread. It can be understood that since the threaded connection has a thread engagement starting point, the structure of the single thread thread is set to be installed in one direction, while the double thread thread has an engagement starting point position that is 180 degrees from each other. Therefore, in addition to the stroke, the double thread thread is The stroke of the single thread of the specification is larger to achieve quick locking between the rotating nut 122 and the threaded column 110. It can also make the installation between the rotating nut 122 and the threaded column 110 unnecessary to distinguish the left and right directions, thereby improving the efficiency of the installation. The rotation nut 122 and the threaded column 110 are connected and installed conveniently.
  • the angular span of the second threaded area 1221 continuously distributed in the circumferential direction of the rotating nut 122 is greater than or equal to 15°. Therefore, the first threaded area 111 and the second threaded area 1221 can achieve sufficient threading fit, and the occurrence of the failure of the first threaded area 111 and the second threaded area 1221 caused by slight shaking in the rotation direction of the rotating nut 122 is reduced. probability.
  • the angular span of the second threaded area 1221 is referred to as ⁇ in FIG. 6 . ⁇ can be 30°, 45°, 60°, 75°, 90°, etc.
  • the angular span of the second threaded area 1221 continuously distributed in the circumferential direction of the rotating nut 122 is not limited to greater than or equal to 30°, and it can also be set to other angles according to actual needs, such as 25°, 20°, 15° and 10° etc.
  • the rotary connector assembly 120 also includes a limiting column fixed block 123.
  • the limiting column fixed block 123 is fixed on the back. rack module 410.
  • the nut limiting column 121 includes a first column 1211 and a second column 1212 that are fixed to each other. One end of the first column 1211 away from the second column 1212 is fixed on the limiting column fixed block 123.
  • the second column 1212 The diameter is larger than the diameter of the first cylinder 1211, so that a rotation slot (not shown in the figure, the same below) for retaining the rotation nut 122 is formed between the second cylinder 1212 and the limiting column fixed block 123.
  • the rotating slot allows the rotating nut 122 to rotate around the first cylinder 1211 .
  • the limiting column fixing block 123 can be fixed on the back frame module 410 through the second screws 12 on both sides. Moreover, the second screw 12 can also simultaneously realize the fastening connection between the top rod cover 134 of the two limiting components 130 and the second rod body 300 . That is to say, the projection of the limiting column fixing block 123 and the limiting assembly 130 on the back frame module 410 can be set to at least partially exist. In the overlapping area, the limiting component 130 and the limiting column fixing block 123 are locked to the back frame module 410 together in the overlapping area to simplify the installation steps and save parts. As mentioned above, the limiting component 130 and the limiting column fixing block 123 can be locked together to the back frame module 410 at the overlapping area through the second screw 12 .
  • the limiting column fixing block 123 may be fixed on the second rod body 300 . That is, the projections of the limiting column fixing block 123 and the ejector cover 134 of the limiting assembly 130 on the second rod body 300 have at least a partial overlap area, so that the limiting assembly 130 and the limiting column fixing block 123 can be locked synchronously. on the second rod body 300.
  • one end of the first column 1211 away from the second column 1212 can be fixedly connected to the limiting column fixing block 123 through a third screw 13 .
  • the rotating nut 122 is radially provided with a limiting protrusion 1224 that rotates with the rotating slot 1211 .
  • the number of the limiting protrusions 1224 may be two, and the two limiting protrusions 1224 are arranged oppositely.
  • a torsion spring assembly slot (not shown in the figure) is formed between the end of the first column 1211 away from the second column 1212 and the limiting column fixed block 123 to assemble a reset torque.
  • the spring 124 and the two ends of the return torsion spring 124 are respectively formed with a first limiting post 1241 and a second limiting post 1242.
  • the first limiting column 1241 is limited-fitted with the limiting protrusion 1224 in the circumferential direction
  • the second limiting column 1242 is limited-fitted with the limiting column fixed block 123 in the circumferential direction.
  • the first limiting column 1241 will move relative to the second limiting column 1242, thereby elastically deforming the reset torsion spring 124 as a whole.
  • the return torsion spring 124 will return to the state before deformation, thereby driving the limiting convex block 1224 to return to the position before rotation relative to the limiting column fixed block 123 .
  • one end of the return torsion spring 124 is formed with a first limiting post 1241 that cooperates with the limiting protrusion 1224 in the circumferential direction.
  • the second limiting post 1242 blocks the limiting fit in the circumferential direction. In this way, through the arrangement of the first limiting post 1241 and the second limiting post 1242, a certain limit can be formed on the rotation angle of the rotating nut 122 along the rotation slot around the first cylinder 1211, so that the rotating nut 122 can 122 rotates the same preset angle in both counterclockwise and clockwise directions.
  • a buffer rubber block 125 is fixed on an end of the second cylinder 1212 away from the first cylinder 1211 to lower the screw when the rotating nut 122 is threadedly connected to the threaded column 110 .
  • the top end of the tooth post 110 and the bottom end of the nut limiting post 121 are in direct contact, causing friction loss.
  • the buffer rubber block 125 can be fixed on the end of the second column 1212 away from the first column 1211 through the fourth screw 14 .
  • the buffer rubber block 125 may be made of soft rubber material, such as rubber, silicone, etc.
  • the minimum distance in the radial direction between the second cylinder 1212 and the inner wall of the rotating nut 122 is greater than or equal to the minimum distance in the radial direction between the first cylinder 1211 and the limiting bump 1224 .
  • the minimum distance in the radial direction between the second cylinder 1212 and the inner wall of the rotating nut 122 is shown in L1 in Figure 8 ; the minimum distance in the radial direction between the first cylinder 1211 and the limiting bump 1224 is shown in Figure 8 L1, that is, L1 ⁇ L2.
  • the first cylinder 1211 can limit the position of the limiting bump 1224, thereby lowering the second cylinder.
  • this arrangement also reduces the probability that the second cylinder 1212 interferes with the threads, causing damage to the threads in the second thread area 1221, and increases the number of times the back frame connection structure 100 can be repeatedly disassembled and the service life.
  • the backframe connection structure 100 provided by the embodiment of the present application can realize the connection between the threaded column 110 and the rotating nut 122 when the first smooth area 112 of the threaded column 110 is facing the corresponding second threaded area 1221 of the rotating nut 122. plug connection between.
  • the rotating nut 122 is rotated at a certain angle around the nut limiting post 121, the second threaded area 1221 of the rotating nut 122 can be threadedly matched with the corresponding first threaded area 111 of the threaded post 110, thereby realizing rotation.
  • the threaded connection between the nut 122 and the threaded column 110 Furthermore, by reversing the above steps, the rotating nut 122 can be separated from the threaded column 110 . The entire disassembly and installation process requires no tool assistance and is very convenient.
  • the embodiment of the present application provides a backframe device 400.
  • the backframe device 400 includes a plurality of backframe modules 410 and a plurality of the above-mentioned backframe connection structures 100. .
  • Two adjacent backframe modules 410 can be connected through the backframe connection structure 100 described in each embodiment. In other words, two adjacent back frame modules 410 can be fastened together through a back frame connection structure 100 .
  • each back frame module 410 includes two rods 411 , one end of each rod 411 is fixed with the above-mentioned threaded post 110 , and the other end of each rod 411 is fixed with the screw post 110 .
  • the above-mentioned rotary joint assembly 120 and limiting assembly 130 are fixed at one end. In this way, the threaded connection between the rotary connector assembly 120 and the adjacent threaded column 110 can be used to improve the convenience of assembly between the two back frame modules 410 . It can be understood that, for two adjacent back frame modules 410, each of the two adjacent rod bodies 411 can be fastened through a back frame connection structure 100.
  • the backrack device 400 that can be set also includes a supporting ground beam 420.
  • the supporting ground beam 420 is provided with a plurality of installation positions (not shown) that can correspondingly install the screw posts 110.
  • At least one backrack module 410 is connected through a backrack connection structure. 100 fastened in one installation position.
  • the screw posts 110 can be fastened and installed respectively at the corresponding installation positions, and then the screw posts 110 can be threaded with the rotary connector assembly 120 on the adjacent rod body 411 connection to easily and conveniently assemble the bottom side back frame module 410 on the supporting ground beam 420.
  • the backrest device 400 provided by the embodiment of the present application can conveniently realize the connection between the multiple components included in the backrest device 400 through the backrest connection structure 100 that is simple to operate, effectively solving the problem of the backrest of the existing display screen.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

一种背架连接结构（100）及背架装置（400），背架连接结构包括螺牙柱（110）以及旋转连接头组件（120），螺牙柱与旋转连接头组件用于分别设于相邻两背架模块（410），螺牙柱的外周面交替设置有第一平滑区域（112）和第一螺纹区域（111），旋转连接头组件包括螺母限位柱（121）及旋转螺母（122），旋转螺母的内周面交替设置有第二平滑区域（1222）和第二螺纹区域（1221），旋转螺母可绕着螺母限位柱转动以切换旋转螺母内周面与螺牙柱外周面对位的区域；其中，第二平滑区域与第一螺纹区域正对时，第二螺纹区域与第一平滑区域正对，以供螺牙柱与旋转螺母插接或分离；第二螺纹区域与第一螺纹区域对位时相互螺纹配合。背架装置包括上述背架连接结构。这种背架连接结构使得背架拆装简便。

Description

一种背架连接结构及背架装置
相关申请
本申请要求2022年08月26日申请的，申请号为202222271039.X，名称为“一种背架连接结构及背架装置”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及LED显示技术领域，特别涉及一种背架连接结构及背架装置。
背景技术
目前，户外大型LED显示屏一般需要通过背架装置对其进行支撑或便于工作人员对其进行后维护，尤其是在租赁场景中，需要频繁对LED显示屏和背架装置进行拆装。但目前的LED显示屏和背架装置的拆装操作繁琐，给工作人员的拆装工作带来许多不便。
实用新型内容
根据本申请的各种实施例，提供一种背架连接结构，所述背架连接结构包括螺牙柱以及旋转连接头组件，所述螺牙柱与所述旋转连接头组件用于分别设于相邻两背架模块，所述螺牙柱的外周面交替设置有第一平滑区域和第一螺纹区域，所述旋转连接头组件包括螺母限位柱及旋转螺母，所述旋转螺母的内周面交替设置有第二平滑区域和第二螺纹区域，所述旋转螺母可绕着所述螺母限位柱转动以切换所述旋转螺母内周面与所述螺牙柱外周面对位的区域；
其中，所述第二平滑区域与所述第一螺纹区域正对时，所述第二螺纹区域与所述第一平滑区域正对，以供所述螺牙柱与所述旋转螺母插接或分离；
所述第二螺纹区域与所述第一螺纹区域对位时相互螺纹配合。
在其中一个实施例中，所述背架连接结构还包括限位组件，所述限位组件与所述旋转螺母可分离地插接配合，以限定所述旋转螺母处于所述第二螺纹区域与所述第一螺纹区域螺纹配合的位置。
在其中一个实施例中，所述旋转螺母的一端设置有沿轴向延伸的限位槽，所述限位组件包括滑动顶杆及顶杆弹簧，所述滑动顶杆用于可动地设于所述背架模块，所述顶杆弹簧能够驱动所述滑动顶杆与所述限位槽轴向卡接配合。
在其中一个实施例中，所述限位组件还包括解锁推环，所述解锁推环用于可动地设于所述背架模块并与所述滑动顶杆连接，以驱动所述滑动顶杆远离所述限位槽。
在其中一个实施例中，所述限位组件还包括顶杆盖，所述顶杆盖用于与所述背架模块固接，所述顶杆盖开设有顶杆滑动槽，所述顶杆滑动槽供所述滑动顶杆在预设行程内滑动，所述顶杆弹簧位于所述滑动顶杆远离所述限位槽的一端与所述顶杆滑动槽的槽壁之间。
在其中一个实施例中，所述第一螺纹区域和所述第二螺纹区域均设置有多线螺纹，且所述第一螺纹区域与所述第二螺纹区域的多线螺纹相互配合。
在其中一个实施例中，所述第二螺纹区域在所述旋转螺母圆周方向上连续分布的角度跨度大于或等于30°。
在其中一个实施例中，所述旋转连接头组件还包括固设于所述背架模块的限位柱固定块，所述螺母限位柱包括相互固接的第一柱体与第二柱体，所述第一柱体远离所述第二柱体的一端固设于所述限位柱固定块，所述第二柱体的直径大于所述第一柱体的直径，使得所述第二柱体与所述限位柱固定块之间形成卡设所述旋转螺母的转动卡槽，所述转动卡槽供所述旋转螺母绕着所述第一柱体转动。
在其中一个实施例中，所述旋转螺母内沿径向凸设有与所述转动卡槽转动配合的限位凸块。
在其中一个实施例中，所述第一柱体远离所述第二柱体的一端与所述限位柱固定块之间还形成有扭簧装配槽，以装配一复位扭簧，所述复位扭簧的两端分别形成有第一限位柱及第二限位柱，所述第一限位柱与所述限位凸块在周向上限位配合，所述第二限位柱与所述限位柱固定块在周向上限位配合。
在其中一个实施例中，所述第二柱体远离所述第一柱体的一端还固设有缓冲胶块。
在其中一个实施例中，所述第二柱体与所述旋转螺母的内壁在径向上的最小距离，大于所述第一柱体与所述限位凸块在径向上的最小距离。
在其中一个实施例中，所述限位柱固定块和所述限位组件在所述背架模块上的投影至少存在部分重合区域，所述限位组件和所述限位柱固定块在所述重合区域处一同锁固于所述背架模块。
本申请还提供一种背架装置，所述背架装置包括多个背架模块以及多个如上述各实施例中任一项所述的背架连接结构，相邻的两所述背架模块通过所述背架连接结构连接。
在其中一个实施例中，所述背架装置还包括支撑地梁，所述支撑地梁上设置有多个可对应安装所述螺牙柱的安装位，至少一所述背架模块通过一所述背架连接结构紧固在一所述安装位。
附图说明
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传统技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。
图1为根据本申请一些实施例所提供的背架连接结构的结构示意图。
图2为图1所示背架连接结构的螺牙柱在一些实施例中的结构示意图。
图3为图2所示背架连接结构的旋转连接头组件和限位组件在一些实施例中的爆炸示意图。
图4为图3所示背架连接结构中限位组件的顶杆盖、滑动顶杆及顶杆弹簧在一些实施例中的轴侧示意图。
图5为图3所示背架连接结构在一些实施例中所包括的旋转螺母及螺母限位柱的俯视图。
图6为图5所示旋转螺母及螺母限位柱在一些实施例中沿A-A线的剖视图。
图7为图5所示旋转螺母在一些实施例中沿B-B线的剖视图。
图8为图6所示旋转螺母及螺母限位柱于在一些实施例中C处的局部放大图。
图9为根据本申请一些实施例所提供的背架装置的使用状态结构示意图。
图10为图9所示背架装置在一些实施例中所包括的两个背架模块之间的连接示意图。
标号说明：100、背架连接结构；110、螺牙柱；111、第一螺纹区域；112、第一平滑区域；120、旋转连接头组件；121、螺母限位柱；1211、第一柱体；1212、第二柱体；122、旋转螺母；1221、第二螺纹区域；1222、第二平滑区域；1223、限位槽；1224、限位凸块；123、限位柱固定块；124、复位弹簧；1241、第一限位柱；1242、第二限位柱；125、缓冲胶块；130、限位组件；131、滑动顶杆；132、顶杆弹簧；133、解锁推环；134、顶杆盖；1341、顶杆滑动槽；200、第一杆体；300、第二杆体；400、背架装置；410、背架模块；411、杆体；420、支撑地梁；500、显示屏；11、第一螺钉；12、第二螺钉；13、第三螺钉；14、第四螺钉。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本 申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，若有出现这些术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等，这些术语指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，若有出现这些术语“第一”、“第二”，这些术语仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，若有出现术语“多个”，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，若有出现术语“安装”、“相连”、“连接”、“固定”等，这些术语应做广义理解。例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，若有出现第一特征在第二特征“上”或“下”等类似的描述，其含义可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，若元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。若一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。如若存在，本申请所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
如图1至图3所示，本申请一实施例提供一种背架连接结构100，该背架连接结构100包括螺牙柱110以及旋转连接头组件120，螺牙柱110与旋转连接头组件120用于分别设于相邻两背架模块410，以使背架模块410之间易于拆装。螺牙柱110的外周面交替设置 有第一螺纹区域111和第一平滑区域112，旋转连接头组件120包括螺母限位柱121及旋转螺母122，旋转螺母122的内周面交替设置有第二螺纹区域1221和第二平滑区域1222。旋转螺母122可绕着螺母限位柱121转动以切换旋转螺母122内周面与螺牙柱110外周面对位的区域。其中，第二平滑区域1222与第一螺纹区域111正对时，第二螺纹区域1221与第一平滑区域112正对，以供螺牙柱110与旋转螺母122插接或分离。第二螺纹区域1221与第一螺纹区域111对位时相互螺纹配合。如此，通过调整旋转螺母122内周面与螺牙杆110外周面对位的区域，可使螺牙柱110与旋转螺母122连接或分离，即实现相邻背架模块410的连接或分离。在本申请实施例中，如图1至图3所示，背架模块410包括杆体411，将相邻设置的背架模块410中的一个背架模块410的杆体411记为第一杆体200，另一个背架模块410的杆体411记为第二杆体300，背架连接结构100可以是连接在第一杆体200与第二杆体300之间。当本背架连接结构100应用在第一杆体200与第二杆体300之间的紧固连接时，上述螺牙柱110可以通过螺纹连接的方式固设在第一杆体200上，即螺牙柱110的固定端置入相应的第一杆体200中后，通过螺纹连接使之紧固在第一杆体200的一端。同理，旋转连接头组件120的螺母限位柱121亦可通过螺纹连接的方式固设在第二杆体300的一端。由此，通过在第一杆体200的一端固设螺牙柱110，并在第二杆体300的一端固设旋转连接头组件120，则第一杆体200的一端与第二杆体300的一端的拆装时，通过转动旋转螺母122便可实现，提高了背架模块410拆装的便利性。
在一个实施例中，如图1及图3所示，背架连接结构100还包括限位组件130，限位组件130与旋转螺母122可分离地插接配合，以限定旋转螺母122处于第二螺纹区域1221与第一螺纹区域111螺纹配合的位置。由此，通过限位组件130对旋转螺母122的限位作用，使第一杆体200与第二杆体300的连接更加稳固。当需要拆卸时，控制限位组件130与旋转螺母122分离，则旋转螺母122可受力转动，从而便于第一杆体200与第二杆体300的拆卸。
请继续参阅图3，在一个实施例中，旋转螺母122的一端设置有沿轴向延伸的限位槽1223，限位组件130包括滑动顶杆131及顶杆弹簧132。滑动顶杆131用于可动地设于背架模块410，顶杆弹簧132能够驱动滑动顶杆131与限位槽1223轴向卡接配合。由此，通过顶杆弹簧132的弹性保持作用，使限位组件130在不受外力或在相对较小的震动下，滑动顶杆131总能与限位槽1223保持卡接配合，从而提高了相邻背架模块410连接的稳定性。
滑动顶杆131可以是可动地设于第二杆体300。
请继续参阅图3，在一个实施例中，限位组件130还包括解锁推环133，解锁推环133 用于可动地设于背架模块410并与滑动顶杆131连接，以驱动滑动顶杆131远离限位槽1223。由此，当需要拆卸相邻背架模块410时，驱动解锁推环133运动可以带动滑动顶杆131与限位槽1223分离，则旋转螺母122可以相对螺牙柱110转动至可供拆卸的位置。
解锁推环133可以可动地套于第二杆体300，以沿第二杆体300轴向运动。通过第二杆体300对解锁推环133的运动进行导向和限位，便于解锁推环133带动滑动顶杆131与限位槽1223分离。
如图3所示，关于上述限位组件130，可以理解的是，旋转螺母122邻近螺母限位柱121的一端设置有轴向延伸的限位槽1223，限位组件130包括滑动顶杆131、驱动滑动顶杆131与限位槽1223轴向卡接配合的顶杆弹簧132以及驱动滑动顶杆131远离限位槽1223的解锁推环133。限位组件130可固设在第二杆体300上。这样一来，通过限位组件130的滑动顶杆131与限位槽1223轴向卡接配合，可在旋转螺母122旋转到与螺牙柱110进行螺纹连接固定后，限制其继续转动，以提高其连接的牢固性。
在一个实施例中，如图1及图3所示，可在第二杆体300相对的两侧分别设置一限位组件130，与之对应地，旋转螺母122邻近螺母限位柱121的一端可设有相对布置的两限位槽1223。可以理解的是，由于解锁推环133套于第二杆体300，故两限位组件130可共用同一解锁推环133，使得解锁推环133可同时驱动两限位组件130的滑动顶杆131远离相应的限位槽1223，实现两限位组件130的同步限位解锁。
请继续参阅图4，在一个实施例中，限位组件130还包括顶杆盖134，顶杆盖134用于与背架模块410固接。顶杆盖134开设有顶杆滑动槽1341，顶杆滑动槽1341供滑动顶杆131在预设行程内滑动，顶杆弹簧132位于滑动顶杆131远离限位槽1223的一端与顶杆滑动槽1341的槽壁之间。由此，通过顶杆盖134与背架模块410固接，使滑动顶杆131及顶杆弹簧132于背架模块410上有相对稳定的位置，则顶杆弹簧132能够稳定地驱动滑动顶杆131与限位槽1223插接配合，以及解锁推环133能够稳定带动滑动顶杆131与限位槽1223分离。如前述，顶杆盖134可以固设于第二杆体300。可以理解的是，滑动顶杆131在预设行程内滑动的各个位置包括与限位槽1223插接配合的位置，以及与限位槽1223分离的位置。
也就是说，为更好地实现上述滑动顶杆131的装配，如图1及图3所示，限位组件130还可以包括顶杆盖134，顶杆盖134远离解锁推环133的一侧表面设置有容置滑动顶杆131在预设行程内沿轴向滑动的顶杆滑动槽1341，滑动顶杆131远离限位槽1223的一端与顶杆滑动槽1341的槽壁之间设置有顶杆弹簧132。顶杆盖134可固设在第二杆体300上，这样一来，滑动顶杆131可在无其它外力作用下，受顶杆弹簧132的弹性作用力而被挤压驱 动，以与相应的限位槽1223进行轴向卡接配合。而解锁推环133套设在第二杆体300上，且解锁推环133与滑动顶杆131紧固连接，故解锁推环133能够方便地推动滑动顶杆131运动。该紧固连接可通过第一螺钉11实现，即通过第一螺钉11使得滑动顶杆131紧固在解锁推环133上，以在外力推动解锁推环133时，带动滑动顶杆131远离相应的限位槽1223运动，实现相应的限位解锁。
请参阅图5至图7并结合图2，在一个实施例中，第一螺纹区域111和第二螺纹区域1221可均设置有多线螺纹，且第一螺纹区域111与第二螺纹区域1221的多线螺纹相互配合。可以理解的是，多线螺纹的行程相比于同规格的单螺纹的行程更大，使旋转螺母122与螺牙柱110之间的实现更快速的锁紧。
进一步地，该多线螺纹可以是双线螺纹。可以理解的是，由于螺纹连接有螺纹咬合起始点，使得单线螺纹的结构设置为单方向安装，而双线螺纹由于其咬合起始点位置互为180度，故双线螺纹除了行程相比于同规格的单螺纹的行程更大，以实现旋转螺母122与螺牙柱110之间的快速锁紧外，亦可使旋转螺母122与螺牙柱110之间的安装不必区分左右方向，从而提高了旋转螺母122与螺牙柱110连接安装的便利性。
请继续参阅图5，在一个实施例中，第二螺纹区域1221在旋转螺母122圆周方向上连续分布的角度跨度大于或等于15°。由此，使第一螺纹区域111与第二螺纹区域1221能够实现充分地螺纹配合，降低在旋转螺母122转动方向上轻微晃动导致第一螺纹区域111与第二螺纹区域1221配合失效的情况发生的几率。上述第二螺纹区域1221的角度跨度参加图6中标号α。α可以为30°、45°、60°、75°及90°等。
当然，第二螺纹区域1221在旋转螺母122圆周方向上连续分布的角度跨度并不限于大于或等于30°，其还可以根据实际需求而设置为其他角度，如25°、20°、15°及10°等。
请再次参阅图3，在一个实施例中，为更好地实现上述旋转连接头组件120的装配，旋转连接头组件120还包括限位柱固定块123，限位柱固定块123固设于背架模块410。螺母限位柱121包括相互固接的第一柱体1211与第二柱体1212，第一柱体1211远离第二柱体1212的一端固设于限位柱固定块123，第二柱体1212的直径大于第一柱体1211的直径，使得第二柱体1212与限位柱固定块123之间形成卡设旋转螺母122的转动卡槽(图未示，下同)。转动卡槽供旋转螺母122绕着第一柱体1211转动。
限位柱固定块123可通过两侧的第二螺钉12固设在背架模块410上。并且，第二螺钉12亦可同步实现两限位组件130的顶杆盖134与第二杆体300之间的紧固连接。也就是说，可以设置限位柱固定块123和限位组件130在背架模块410上的投影至少存在部分 重合区域，限位组件130和限位柱固定块123在重合区域处一同锁固于背架模块410，以简化安装步骤并节省零件。如上述，限位组件130和限位柱固定块123可以是通过所述第二螺钉12在重合区域处一同锁固于背架模块410。进一步地，限位柱固定块123可以是固设在第二杆体300上。即，限位柱固定块123和限位组件130的顶杆盖134在第二杆体300上的投影至少存在部分重合区域，以便于同步地将限位组件130和限位柱固定块123锁固在第二杆体300上。
在一个实施例中，第一柱体1211远离第二柱体1212的一端可通过第三螺钉13与限位柱固定块123固定连接。请参阅图6，为使得旋转螺母122更好地沿着转动卡槽绕着第一柱体1211转动，旋转螺母122内沿径向凸设有与转动卡槽1211转动配合的限位凸块1224，通过限位凸块1224与转动卡槽限位配合，能够提高旋转螺母122转动的平稳性。该限位凸块1224的数目可以是两个，且两个限位凸块1224呈相对设置。在旋转螺母122沿着转动卡槽绕着第一柱体1211转动时，两限位凸块1224均置于转动卡槽内沿着转动卡槽周向滑动。
在一个实施例中，为进一步提升旋转螺母122沿着转动卡槽绕着第一柱体1211转动时的质感，以及使得旋转螺母122实现在无外力情况下快速复位，以便于其进行再次使用装配。如图1及图3所示，第一柱体1211远离第二柱体1212的一端与限位柱固定块123之间还形成有扭簧装配槽(图中未标示)，以装配一复位扭簧124，复位扭簧124的两端分别形成有第一限位柱1241及第二限位柱1242。第一限位柱1241与限位凸块1224在周向上限位配合，第二限位柱1242与限位柱固定块123在周向上限位配合。如此，当限位凸块1224随旋转螺母122整体受力转动时，第一限位柱1241将相对第二限位柱1242发生运动，从而使复位扭簧124整体发生弹性形变。当外力消失后，复位扭簧124将恢复为形变前的状态，从而带动限位凸块1224相对限位柱固定块123恢复至转动前的位置。
并且，复位扭簧124一端形成有与限位凸块1224在周向阻挡限位配合的第一限位柱1241，复位扭簧124的另一端形成有与限位柱固定块123的内侧凸起在周向阻挡限位配合的第二限位柱1242。这样一来，通过第一限位柱1241和第二限位柱1242的设置，可对旋转螺母122沿着转动卡槽绕着第一柱体1211转动的转动角度形成一定的限制，使得旋转螺母122在逆时针方向和顺时针方向上转动相同的预设角度。
请参阅图3，在一个实施例中，第二柱体1212远离第一柱体1211的一端还固设有缓冲胶块125，以在旋转螺母122与螺牙柱110进行螺纹连接时，降低螺牙柱110的顶端与螺母限位柱121的底端发生直接接触而导致摩擦损耗的几率。缓冲胶块125可通过第四螺钉14固定在第二柱体1212远离第一柱体1211的一端。
在一个实施例中，缓冲胶块125可以为软胶材质，例如橡胶、硅胶等。
请参阅图8，在一个实施例中，第二柱体1212与旋转螺母122的内壁在径向上的最小距离，大于或等于第一柱体1211与限位凸块1224在径向上的最小距离。所述第二柱体1212与旋转螺母122的内壁在径向上的最小距离参见图8所示L1；所述第一柱体1211与限位凸块1224在径向上的最小距离参见图8所示L1，即L1≥L2。由于第一柱体1211与第二柱体1212固接，且L1≥L2，则在旋转螺母122转动过程中，通过第一柱体1211对限位凸块1224的限位，能够降低第二柱体1212与旋转螺母122的内壁接触的几率。可以理解的是，旋转螺母122内壁设有螺纹，则本实施例中降低了第二柱体1212与旋转螺母122的内壁接触的几率，也即是降低了第二柱体1212与螺纹发生干涉的几率，使旋转螺母122转动更加顺畅。同时，如此设置也降低了第二柱体1212与螺纹发生干涉而导致第二螺纹区域1221内螺牙受损的几率，提高了背架连接结构100的可反复拆卸次数及使用寿命。
本申请实施例提供的背架连接结构100，当其使得螺牙柱110的第一平滑区域112均正对旋转螺母122相应的第二螺纹区域1221时，可实现螺牙柱110与旋转螺母122之间的插接连接。当其使得旋转螺母122绕着螺母限位柱121转动一定的角度后，可使得旋转螺母122的第二螺纹区域1221均与螺牙柱110相应的第一螺纹区域111进行螺纹配合，进而实现旋转螺母122与螺牙柱110之间的螺纹连接。并且，通过反向操作上述步骤可以使得旋转螺母122与螺牙柱110分开。整个拆卸及安装过程均无需工具辅助，十分方便。
在一个实施例中，如图9及图10所示，本申请实施例提供了一种背架装置400，该背架装置400包括多个背架模块410以及多个上述的背架连接结构100。相邻的两背架模块410可以通过各实施例中所述的背架连接结构100连接。换言之，相邻的两背架模块410之间均可通过一背架连接结构100进行紧固连接。
在一个实施例中，以图9及图10所示为例，每一背架模块410均包括两杆体411，每一杆体411的一端固设上述的螺牙柱110，每一杆体411的另一端固设上述的旋转连接头组件120与限位组件130。如此，可通过旋转连接头组件120与相邻的螺牙柱110之间的螺纹连接，提高两背架模块410之间装配的便利性。可以理解的是，对于相邻的两背架模块410，其每相接设置的两杆体411之间，均可通过一背架连接结构100进行紧固连接。
在一个实施例中，如图9及图10所示，为使得本申请各实施例所述的背架装置400更好、更稳固地立于地上，实现对户外显示屏500的装配与维护，可设置背架装置400还包括支撑地梁420，支撑地梁420上设置有多个可对应安装螺牙柱110的安装位(未图示)，至少一背架模块410通过一背架连接结构100紧固在一安装位。即，可在相应的安装位上分别紧固安装螺牙柱110，再将螺牙柱110与相邻杆体411上的旋转连接头组件120螺纹 连接，以轻松、便利地将底侧的背架模块410装配在支撑地梁420上。
本申请实施例提供的背架装置400，其通过操作简单的背架连接结构100可便利地实现背架装置400所包括的多部件间的连接，有效地解决了现有显示屏的背架之间连接操作繁琐的问题。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (15)

  1. 一种背架连接结构，其特征在于，包括螺牙柱以及旋转连接头组件，所述螺牙柱与所述旋转连接头组件用于分别设于相邻两背架模块，所述螺牙柱的外周面交替设置有第一平滑区域和第一螺纹区域，所述旋转连接头组件包括螺母限位柱及旋转螺母，所述旋转螺母的内周面交替设置有第二平滑区域和第二螺纹区域，所述旋转螺母可绕着所述螺母限位柱转动以切换所述旋转螺母内周面与所述螺牙柱外周面对位的区域；
    其中，所述第二平滑区域与所述第一螺纹区域正对时，所述第二螺纹区域与所述第一平滑区域正对，以供所述螺牙柱与所述旋转螺母插接或分离；
    所述第二螺纹区域与所述第一螺纹区域对位时相互螺纹配合。
  2. 根据权利要求1所述的背架连接结构，其特征在于，还包括限位组件，所述限位组件与所述旋转螺母可分离地插接配合，以限定所述旋转螺母处于所述第二螺纹区域与所述第一螺纹区域螺纹配合的位置。
  3. 根据权利要求2所述的背架连接结构，其特征在于，所述旋转螺母的一端设置有沿轴向延伸的限位槽，所述限位组件包括滑动顶杆及顶杆弹簧，所述滑动顶杆用于可动地设于所述背架模块，所述顶杆弹簧能够驱动所述滑动顶杆与所述限位槽轴向卡接配合。
  4. 根据权利要求3所述的背架连接结构，其特征在于，所述限位组件还包括解锁推环，所述解锁推环用于可动地设于所述背架模块并与所述滑动顶杆连接，以驱动所述滑动顶杆远离所述限位槽。
  5. 根据权利要求3所述的背架连接结构，其特征在于，所述限位组件还包括顶杆盖，所述顶杆盖用于与所述背架模块固接，所述顶杆盖开设有顶杆滑动槽，所述顶杆滑动槽供所述滑动顶杆在预设行程内滑动，所述顶杆弹簧位于所述滑动顶杆远离所述限位槽的一端与所述顶杆滑动槽的槽壁之间。
  6. 根据权利要求1所述的背架连接结构，其特征在于，所述第一螺纹区域和所述第二螺纹区域均设置有多线螺纹，且所述第一螺纹区域与所述第二螺纹区域的多线螺纹相互配合。
  7. 根据权利要求1所述的背架连接结构，其特征在于，所述第二螺纹区域在所述旋转螺母圆周方向上连续分布的角度跨度大于或等于30°。
  8. 根据权利要求2所述的背架连接结构，其特征在于，所述旋转连接头组件还包括固设于所述背架模块的限位柱固定块，所述螺母限位柱包括相互固接的第一柱体与第二柱体，所述第一柱体远离所述第二柱体的一端固设于所述限位柱固定块，所述第二柱体的直 径大于所述第一柱体的直径，使得所述第二柱体与所述限位柱固定块之间形成卡设所述旋转螺母的转动卡槽，所述转动卡槽供所述旋转螺母绕着所述第一柱体转动。
  9. 根据权利要求8所述的背架连接结构，其特征在于，所述旋转螺母内沿径向凸设有与所述转动卡槽转动配合的限位凸块。
  10. 根据权利要求9所述的背架连接结构，其特征在于，所述第一柱体远离所述第二柱体的一端与所述限位柱固定块之间还形成有扭簧装配槽，以装配一复位扭簧，所述复位扭簧的两端分别形成有第一限位柱及第二限位柱，所述第一限位柱与所述限位凸块在周向上限位配合，所述第二限位柱与所述限位柱固定块在周向上限位配合。
  11. 根据权利要求8所述的背架连接结构，其特征在于，所述第二柱体远离所述第一柱体的一端还固设有缓冲胶块。
  12. 根据权利要求8所述的背架连接结构，其特征在于，所述第二柱体与所述旋转螺母的内壁在径向上的最小距离，大于所述第一柱体与所述限位凸块在径向上的最小距离。
  13. 根据权利要求8所述的背架连接结构，其特征在于，所述限位柱固定块和所述限位组件在所述背架模块上的投影至少存在部分重合区域，所述限位组件和所述限位柱固定块在所述重合区域处一同锁固于所述背架模块。
  14. 一种背架装置，其特征在于，包括多个背架模块以及多个如权利要求1-13任一项所述的背架连接结构，相邻的两所述背架模块通过所述背架连接结构连接。
  15. 根据权利要求14所述的背架装置，其特征在于，还包括支撑地梁，所述支撑地梁上设置有多个可对应安装所述螺牙柱的安装位，至少一所述背架模块通过一所述背架连接结构紧固在一所述安装位。
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CN217875045U (zh) * 2022-08-26 2022-11-22 深圳市洲明科技股份有限公司 一种背架连接结构及背架装置

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