Display panel transmission line static electricity conducting device

Abstract

The application belongs to the technical field of display panel manufacturing equipment, and discloses a display panel conveying line static electricity guiding device, which comprises a conductive plug-in part having a first end and a second end, the first end is configured to be inserted into the inside of a rotatable conveying shaft, a grounding terminal is rotatably connected with the second end of the conductive plug-in part, an elastic limiting mechanism is arranged at the first end of the conductive plug-in part and comprises an outer elastic part and an inner elastic part which cooperate with each other, the outer elastic part is elastically matched between the conductive plug-in part and the conveying shaft to provide an expansion force for fixing the conductive plug-in part in the inside of the conveying shaft, the inner elastic part is elastically matched between the conductive plug-in part and the outer elastic part, and the inner elastic part is configured to be movable along the axial direction of the conductive plug-in part to adjust the expansion force of the outer elastic part, and when the inner elastic part moves along the axial direction, the expansion force is adjusted by changing the size of the elastic force applied by the inner elastic part to the outer elastic part.

Description

Technical Field

[0001] This invention belongs to the technical field of display panel manufacturing equipment, and specifically relates to a display panel transmission and electrostatic discharge device. Background Technology

[0002] During the manufacturing process of display panels, especially under environmental conditions such as the drying section, a large amount of static charge is generated due to friction between the transmission line roller shaft and the panel contact surface. With the development of micro-nano devices and semiconductor processing technology, the insulating layer in integrated circuits is becoming increasingly thinner and the linewidth is continuously narrowing, resulting in a significant increase in the electrostatic sensitivity of electronic components. When the static charge accumulates to a certain level, electrostatic discharge (ESD) occurs. This can range from minor issues like particle adsorption on the panel surface affecting product quality to severe issues like breakdown of the panel's metal circuitry, causing product yield losses and scrap. Therefore, how to effectively remove the static charge from the transmission shaft is a critical technical problem that needs to be solved in the display panel manufacturing industry.

[0003] Currently, several technical solutions have been proposed for electrostatic discharge from transmission shafts.

[0004] A common approach is to connect a metal grounding lead to the transmission shaft to conduct static charge to the ground. However, since the transmission shaft rotates continuously during transmission, the metal grounding lead cannot be fixedly connected to the transmission shaft and can only be lapped on the transmission shaft, which makes the metal grounding lead easy to fall off and affects the static discharge effect.

[0005] Another approach relies on the contact between the rollers and conductive brushes to discharge static electricity. Specifically, conductive fiber brushes are used to connect the various conveyor shafts, and the metal casing of the conductive brushes is then connected to the ground wire. However, the rollers need to maintain contact with the conductive brushes during rotation to conduct static electricity. The friction between the conductive brushes and rollers can easily cause particles to flake off, which may fall onto the panel surface, posing a safety hazard to product quality. Furthermore, conductive brushes also suffer from high cost, short lifespan, and the need for complete replacement if damaged.

[0006] To address the aforementioned issues, some improved solutions have attempted to directly insert the grounding terminal into the transmission shaft for fixation. For example, an electrostatic discharge grounding device (CN217643819U) applied to a rotating shaft uses a spring clip on the first connecting block. Fixation is achieved by the tension generated by the spring clip's compression against the inner wall of the rotating shaft's cavity. However, the spring clip's tension is fixed after assembly and cannot be adjusted according to actual usage. With increased usage time, the spring clip may deform due to material fatigue, stress relaxation, or temperature changes, leading to a decrease in tension and poor contact, thus affecting the reliability of static electricity discharge. When the tension is insufficient, the entire grounding terminal needs to be disassembled, replaced, or reinstalled, resulting in high maintenance costs and low efficiency. Summary of the Invention

[0007] In view of this, in order to solve the problems mentioned in the background art, the object of the present invention is to provide a static electricity conduction device for display panel transmission lines.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A static electricity conduction device for a display panel transmission line, comprising: A conductive insert has a first end and a second end disposed opposite to each other along its axial direction, the first end being configured to be inserted into a rotatable transmission shaft; The grounding terminal is rotatably connected to the second end of the conductive plug-in. An elastic limiting mechanism is disposed at the first end of the conductive plug, comprising an outer elastic member and an inner elastic member that cooperate with each other; the outer elastic member is elastically fitted between the outer wall of the conductive plug and the inner wall of the transmission shaft to provide a tensioning force for fixing the conductive plug inside the transmission shaft; the inner elastic member is elastically fitted between the conductive plug and the outer elastic member, and the inner elastic member is configured to be movable along the axial direction of the conductive plug to adjust the tensioning force of the outer elastic member; When the inner elastic element moves axially, the tensioning force is adjusted by changing the magnitude of the elastic internal force it applies to the outer elastic element.

[0009] Preferably, the outer elastic element and the inner elastic element each have an outer elastic arm and an inner elastic arm that extend radially outward; wherein the angle between the outer elastic arm and the axis is smaller than the angle between the inner elastic arm and the axis, so that the free end of the inner elastic arm can abut against the inner wall of the outer elastic arm.

[0010] Preferably, the device further includes an elastic rubber ring, coaxially fitted at the free end of the elastic limiting mechanism; when the elastic limiting mechanism contracts and deforms, the outer elastic arm and / or the inner elastic arm radially presses against the elastic rubber ring.

[0011] Preferably, a sliding connection structure is provided between the outer elastic arm and the inner elastic arm; the sliding connection structure includes a sliding groove and a sliding rail that cooperate with each other, for limiting the inner elastic member to be able to move axially only relative to the outer elastic member.

[0012] Preferably, the elastic limiting mechanism further includes an axial adjustment mechanism; the axial adjustment mechanism includes a screw member rotatably sleeved on the conductive plug, and a nut member screwed onto the outside of the screw member; the mounting end of the inner elastic member is fixedly connected to the nut member.

[0013] Preferably, the device further includes a drive assembly; the drive assembly includes a drive gear ring, a driven gear ring, a connecting rod, a first gear, and a second gear; the drive gear ring is rotatably disposed outside the elastic limiting mechanism on the conductive insert; the driven gear ring is fixed to the inner wall of the screw member; the connecting rod is arranged along the axial direction of the conductive insert, the first gear and the second gear are respectively fixed at both ends of the connecting rod, and the first gear meshes with the drive gear ring, and the second gear meshes with the driven gear ring.

[0014] Preferably, the outer elastic element and the inner elastic element each have an outer mounting ring and an inner mounting ring; multiple outer elastic arms are arranged in an array around the outer mounting ring, and multiple inner elastic arms are arranged in an array around the inner mounting ring, with each outer elastic arm and each inner elastic arm having a one-to-one correspondence; wherein, the outer mounting ring is detachably connected to the conductive plug by bolts.

[0015] Preferably, the second end of the conductive plug is provided with a shaft stop and an elastic sealing gasket that cooperates with the shaft stop; when the first end of the conductive plug is inserted into the transmission shaft, the elastic sealing gasket axially abuts against the end of the transmission shaft to provide an axial force to the conductive plug that causes the elastic limiting mechanism to expand outward.

[0016] Preferably, the second end of the conductive plug is provided with a groove, and a bearing for rotatably connecting the conductive plug and the grounding terminal is fixed in the groove; the groove is also provided with a bearing retaining ring and an elastic open ring for installing the bearing; the outer ring of the bearing is restricted to the shoulder step of the groove by the bearing retaining ring, the elastic open ring abuts against the outside of the bearing retaining ring, and the inner wall of the groove is provided with an annular groove for engaging the elastic open ring.

[0017] Preferably, the grounding terminal includes a conductive center post and a conductive tightening bolt. The conductive center post is fixedly connected to the inner ring of the bearing, and the conductive tightening bolt is used to press and fix the external connecting wire to the conductive center post.

[0018] Compared with the prior art, the present invention has the following advantages: (1) This invention provides a static electricity conduction device for display panel transmission lines. By rotating the grounding terminal and the conductive plug, the interference of the transmission shaft rotation on the wiring orientation of the grounding terminal is avoided, thereby effectively realizing the static electricity grounding of each transmission shaft in the display panel transmission line. The orientation of the grounding terminal can also be flexibly adjusted to adapt to different wiring space constraints. At the same time, the axial movement of the inner elastic element changes the support state of the outer elastic element, thereby realizing the stepless adjustment of the tension force of the conductive plug inside the transmission shaft. This allows the overall device to flexibly adapt to transmission shafts with different inner diameters and provide appropriate tension fixing force according to different fixing needs, thereby significantly improving the stability of the device installation.

[0019] (2) In this invention, a triangular constraint structure is constructed by the angle difference between the inner and outer elastic arms. When the inner elastic element moves axially, the free end of the inner elastic arm slides along the inner wall of the outer elastic arm, which efficiently converts the axial displacement into the radial expansion or contraction deformation of the outer elastic arm, thereby effectively ensuring the linearity and stability of the tension force adjustment.

[0020] (3) In this invention, the flexible deformation characteristics of the elastic rubber ring are used to provide further support for the inner / outer elastic arms under compression deformation, so as to further improve the stability of the elastic limiting mechanism for expansion and fixation.

[0021] (4) In this invention, the self-locking characteristics of the threaded pair and precision transmission are used to convert the rotational motion of the screw into the axial displacement of the nut and the inner elastic element. The remote rotational drive of the screw is realized through the drive assembly, so that the operator can drive the screw by rotation without having to go deep into the elastic limit mechanism. The structure is simple and the adjustment and operation are convenient.

[0022] (5) In this invention, the inner and outer elastic elements are detachably installed by the inner and outer mounting rings, which facilitates the independent replacement of each elastic element when the inner and outer elastic arms are over-fatigued or damaged.

[0023] (6) In this invention, the compression reaction force of the elastic sealing gasket is used to provide a pre-tightening reference for the entire device, which not only ensures the positioning accuracy of the insertion depth of the conductive plug, but also enhances the initial tightening state of the elastic limiting mechanism through axial force, and effectively achieves end sealing protection. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the structure of the external elastic element in this invention; Figure 5 This is a schematic diagram of the internal elastic element in this invention; Figure 6 This is a schematic diagram of the driving component in this invention; Figure 7 This is a schematic diagram illustrating the tension force adjustment principle of the elastic limiting mechanism in this invention. Figure 8 This is a diagram showing the usage state of the present invention.

[0025] In the diagram: Conductive insert-1; Shaft stop-11; Elastic sealing gasket-12; Grounding terminal-2; Conductive center post-21; Conductive tightening bolt-22; Elastic limiting mechanism-3; Outer elastic element-31; Outer elastic arm-311; Outer mounting ring-312; Inner elastic element-32; Inner elastic arm-321; Inner mounting ring-322; Slide groove-33; Slide rail-34; Screw component-35; Nut component-36; Drive assembly-4; Drive gear ring-41; Driven gear ring-42; Connecting rod-43; First gear-44; Second gear-45; Elastic rubber ring-5; Bearing-6; Bearing retainer ring-7; Elastic open ring-8. Detailed Implementation

[0026] To further understand the content of this invention, a detailed description of the invention is provided in conjunction with the accompanying drawings and embodiments. The structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art, and are not intended to limit the implementation conditions of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention. It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein.

[0027] like Figures 1-8As shown, the present invention provides a static electricity conduction device for display panel transmission lines, comprising a conductive plug 1, a grounding terminal 2, and an elastic limiting mechanism 3. The conductive plug 1 serves as the main support and conductive carrier of the device, having a first end and a second end arranged opposite each other along its axial direction. The first end is inserted into a rotatable transmission shaft via the elastic limiting mechanism 3 to achieve mechanical fixation and electrical conduction with the transmission shaft. The second end is located outside the transmission shaft and is used to connect to an external grounding line via the grounding terminal 2. Specifically, the conductive plug 1 and the elastic limiting mechanism 3 are typically made of a metal material with good conductivity. The grounding terminal 2 is rotatably connected to the second end of the conductive plug 1, allowing the grounding terminal 2 to be circumferentially rotated relative to the conductive plug 1. In the actual assembly environment of display panel transmission lines, the internal space of the equipment is often quite compact, and the routing direction of the grounding wire may be restricted by surrounding components. By allowing the grounding terminal 2 to have rotational freedom, installers can flexibly rotate the grounding terminal 2 to the optimal wiring angle according to the actual wiring requirements on site after the conductive plug 1 is inserted into and fixed to the transmission shaft. Furthermore, after grounding is completed, the overall electrical connection structure will not cause structural interference to the continuous rotation of the transmission shaft.

[0028] In one specific embodiment, the elastic limiting mechanism 3 is disposed at the first end of the conductive plug 1 and includes an outer elastic member 31 and an inner elastic member 32 that cooperate with each other; the outer elastic member 31 is elastically fitted between the outer wall of the conductive plug 1 and the inner wall of the transmission shaft to provide a tightening force for fixing the conductive plug 1 inside the transmission shaft; the inner elastic member 32 is elastically fitted between the conductive plug 1 and the outer elastic member 31, and the inner elastic member 32 is configured to be movable along the axial direction of the conductive plug 1 to adjust the tightening force of the outer elastic member 31; wherein, when the inner elastic member 32 moves along the axial direction, the tightening force is adjusted by changing the magnitude of the elastic internal force applied to the outer elastic member 31.

[0029] Specifically, the outer elastic element 31 includes an outer mounting ring 312 and a plurality of outer elastic arms 311 arranged circumferentially around the outer mounting ring 312. The inner elastic element 32 includes an inner mounting ring 322 and a plurality of inner elastic arms 321 arranged circumferentially around the inner mounting ring 322. Each outer elastic arm 311 corresponds one-to-one with each inner elastic arm 321, and both the outer and inner elastic arms 311 extend radially outward at an angle. It should be noted that the angle between the outer elastic arm 311 and the axis is smaller than the angle between the inner elastic arm 321 and the axis, so that the free end of the inner elastic arm 321 can abut against the inner wall of the outer elastic arm 311. Figure 7As shown in the diagram, when the inner elastic element 32 moves axially, due to the larger tilt angle of the inner elastic arm 321, its free end will slide relative to the inner wall of the outer elastic arm 311, thereby linearly converting the axial displacement of the inner elastic element 32 into a radial expansion force on the outer elastic arm 311. When the free end of the outer elastic arm 311 abuts against the inner wall of the transmission shaft, this radial expansion force will increase the tension force generated by the outer elastic arm 311 on the inner wall of the transmission shaft. Conversely, when the inner elastic element 32 moves in the opposite direction, the support component decreases, and the tension force generated by the outer elastic element 31 on the inner wall of the transmission shaft also decreases.

[0030] In actual installation, the aforementioned tension force adjustment can be performed before initial installation or during subsequent maintenance. For example, during subsequent maintenance and repair, if the outer elastic arm 311 experiences plastic yielding or fatigue failure under long-term pressure, the radial expansion force of the outer elastic arm 311 can be increased by moving the axial position of the inner elastic element 32, thereby improving the overall installation stability of the device. It should be noted that when adjusting the axial position of the inner elastic element 32, the conductive plug 1 needs to be removed from the transmission shaft first, and then reinserted after adjustment.

[0031] In one specific embodiment, to achieve axial position adjustment of the inner elastic element 32, the elastic limiting mechanism 3 further includes an axial adjustment mechanism; the axial adjustment mechanism includes a screw 35 rotatably sleeved on the conductive plug 1, and a nut 36 screwed onto the outside of the screw 35; the mounting end of the inner elastic element 32 is fixedly connected to the nut 36. Specifically, the outer mounting ring 312 is detachably connected to the first end of the conductive plug 1 by bolts, and the inner mounting ring 322 is coaxially sleeved and fixed to the outside of the nut 36, thereby enabling the nut 36 and the inner elastic element 32 fixed thereto to be driven to translate axially using the transmission action of the threaded pair.

[0032] It should be noted that, to stabilize the axial movement of the inner elastic element 32, a sliding connection structure is provided between the outer elastic arm 311 and the inner elastic arm 321. Specifically, the sliding connection structure includes a matching groove 33 and a slide rail 34, which restrict the inner elastic element 32 to move only axially relative to the outer elastic element 31. For example, a slide rail 34 extending along the generatrix direction can be provided on the inner wall surface of the outer elastic arm 311, while a corresponding groove 33 is provided on the free end of the inner elastic arm 321. This effectively eliminates the circumferential rotation that may occur in the inner elastic element 32 during adjustment and ensures that the free end of the inner elastic arm 321 always accurately abuts against the predetermined force-bearing position of the outer elastic arm 311.

[0033] As described above, both the bolts of the outer mounting ring 312 and the nuts 36 of the inner mounting ring 322 can be screwed and disassembled, thus configuring both the outer elastic element 31 and the inner elastic element 32 as detachable modules. When a certain elastic arm experiences fatigue fracture or excessive wear due to long-term use, it is not necessary to scrap the entire conductive plug-in 1; only the outer elastic element 31 or the inner elastic element 32 needs to be replaced, thereby significantly reducing maintenance costs. It should be understood that although this embodiment shows a corresponding arrangement where the number of inner elastic arms 321 and outer elastic arms 311 is equal, in other embodiments, the ratio of the two can be adjusted according to the force analysis. For example, multiple pairs of inner elastic arms 321 can be used to support a single outer elastic arm 311 to enhance the local support stiffness.

[0034] Based on the above, combined with Figure 3 As shown, since both the inner elastic element 32 and the nut element 36 are located inside the outer elastic element 31, to facilitate the axial movement of the inner elastic element 32, a drive assembly 4, which is connected to the screw element 35, is preferably also provided on the conductive insert 1. Specifically, the drive assembly 4 includes a drive gear ring 41, a driven gear ring 42, a connecting rod 43, a first gear 44, and a second gear 45; the drive gear ring 41 is rotatably located outside the elastic limiting mechanism 3 on the conductive insert 1; the driven gear ring 42 is fixed to the inner wall of the screw element 35; the connecting rod 43 is arranged along the axial direction of the conductive insert 1, and the first gear 44 and the second gear 45 are respectively fixed to the two ends of the connecting rod 43, with the first gear 44 meshing with the drive gear ring 41 and the second gear 45 meshing with the driven gear ring 42. Figure 3 As shown, the drive gear ring 41 is positioned in the middle of the conductive insert 1, and is axially offset from the elastic limiting mechanism 3, thus facilitating manual rotation of the drive gear ring 41. When the drive gear ring 41 rotates, it drives each first gear 44 to rotate, which in turn drives the corresponding second gear 45 to rotate via the connecting rod 43. The second gear 45 then meshes with and drives the screw component 35 to rotate, thereby effectively realizing remote drive of the threaded pair, making adjustment operations more convenient. It should be noted that, as Figure 3 and Figure 6 As shown, the connecting rod 43 does not necessarily occupy the central axis position of the conductive plug 1, but adopts an eccentric setting or a circumferentially staggered setting layout, so as to achieve uniform circumferential driving of the screw 35.

[0035] Furthermore, to further enhance the stability of the elastic limiting mechanism 3 during expansion and fixation, it is preferable to provide an elastic rubber ring 5 on the conductive plug 1. Specifically, the elastic rubber ring 5 is coaxially fitted to the free end of the elastic limiting mechanism 3, and when the elastic limiting mechanism 3 contracts and deforms, the outer elastic arm 311 and / or the inner elastic arm 321 radially presses against the elastic rubber ring 5. Thus, by utilizing the flexible deformation characteristics of the elastic rubber ring 5, further support is provided for the outer elastic arm 311 and the inner elastic arm 321 under compressed deformation.

[0036] Furthermore, the second end of the conductive plug 1 is provided with a shaft stop 11 and an elastic sealing gasket 12 that cooperates with the shaft stop 11. Specifically, the shaft stop 11 is usually an integrally formed or flange-shaped protrusion structure fixedly connected to the second end of the conductive plug 1, used to limit the depth of the conductive plug 1 inserted into the transmission shaft; the elastic sealing gasket 12 is sleeved on the side of the shaft stop 11 facing the transmission shaft, and its material can be fluororubber, silicone rubber or polyurethane, etc., which have good resilience and wear resistance. When the first end of the conductive plug 1 is inserted into the transmission shaft, the elastic sealing gasket 12 axially abuts against the end of the transmission shaft to provide the conductive plug 1 with an axial force that causes the elastic limiting mechanism 3 to expand outward. In this structure: on the one hand, the axial reaction force generated by the elastic sealing gasket 12 after deformation under pressure provides a stable pre-tightening reference for the entire device, so that the conductive plug 1 obtains an initial axial positioning force after being inserted into place, avoiding axial movement caused by assembly gaps; on the other hand, this axial pre-tightening force can be transmitted to the elastic limiting mechanism 3, which helps to enhance its initial tightening state, thereby enabling the entire device to have good anti-dislodgement capability in the initial state. At the same time, the elastic sealing gasket 12 also fills the gap between the shaft stop 11 and the end face of the transmission shaft, effectively preventing external dust, moisture or foreign objects from entering the interior of the transmission shaft. It should be understood that although this embodiment shows the elastic sealing gasket 12 as an independent annular gasket structure, in other embodiments, the sealing structure can also be directly set on the surface of the shaft stop 11, or other structures such as O-rings or lip seals can be used.

[0037] In one specific embodiment, the second end of the conductive plug 1 is provided with a groove, and a bearing 6, which rotatably connects the conductive plug 1 and the grounding terminal 2, is fixed in the groove. Specifically, the groove is located in the central region of the second end of the conductive plug 1, and its dimensional accuracy matches the outer ring of the bearing 6 to ensure coaxiality. To ensure the stability of the bearing 6 during long-term operation, the groove is also provided with a bearing retaining ring 7 and an elastic open ring 8 for mounting the bearing 6; the outer ring of the bearing 6 is restricted to the shoulder step of the groove by the bearing retaining ring 7, the elastic open ring 8 abuts against the outside of the bearing retaining ring 7, and the inner wall of the groove is provided with an annular groove for engaging the elastic open ring 8. The shoulder step provides a unidirectional axial positioning reference, the bearing retaining ring 7 acts as a transition piece to press the outer ring of the bearing onto the shoulder, and the elastic open ring 8 uses its own radial tension to engage in the annular groove, forming a rigid stop on the other side, thereby effectively eliminating the risk of the bearing 6 shifting or dislodging under axial force or vibration conditions. The inner ring of the bearing 6 is fixedly connected to the grounding terminal 2, so that the grounding terminal 2 can rotate circumferentially with low friction relative to the conductive plug 1, so as to ensure the stability of the grounding structure and the smooth rotation of the transmission shaft.

[0038] In one specific embodiment, the grounding terminal 2 includes a conductive center post 21 and a conductive tightening bolt 22. The conductive center post 21 is fixedly connected to the inner ring of the bearing 6, and the conductive tightening bolt 22 is used to press and fix the external connecting wire onto the conductive center post 21. The conductive center post 21 is typically made of a high-conductivity material such as copper alloy to ensure efficient discharge of static charge. Furthermore, the conductive center post 21 has a wiring plane or wiring hole, on which the conductive tightening bolt 22 is screwed. By applying a tightening force, the external connecting wire is tightly pressed onto the surface of the conductive center post 21, thereby avoiding the risk of static electricity accumulation or spark discharge due to poor contact.

[0039] In summary, in the assembly or maintenance of display panel transmission lines: First, the device is inserted and initially positioned. The operator holds the second end of the conductive plug 1 and pushes its first end axially into the rotatable transmission shaft. During this process, the inner wall of the transmission shaft exerts a squeezing effect on the outer elastic arm 311 along the inclined surface of the outer elastic arm 311, causing the outer elastic element 31 to contract and deform inside the transmission shaft. The contraction and deformation of the outer elastic element 31 acts on the inner elastic element 32, thereby driving the inner elastic element 32 to also undergo a certain degree of contraction and deformation. After contraction and deformation, the outer elastic arm 311 and the inner elastic arm 321 are pressed tightly onto the elastic rubber ring 5, thereby ensuring the stability of the deformation support of the elastic limiting mechanism 3.

[0040] When the conductive plug 1 is inserted into place, the elastic sealing gasket 12 at the second end of the conductive plug 1 is squeezed between the second end shaft stop 11 and the end of the transmission shaft. The elastic compression deformation of the elastic sealing gasket 12 fills the assembly gap between the conductive plug 1 and the end face of the transmission shaft, forming an effective sealing barrier to prevent external dust and moisture from entering the shaft body. On the other hand, the axial reaction force generated by it provides an initial axial force for the entire elastic limiting mechanism 3. Under the action of this axial force, the elastic limiting mechanism 3 has a further outward expansion and tightening tendency, thereby preventing the conductive plug 1 from accidentally slipping off due to gravity or external force.

[0041] After insertion, since the grounding terminal 2 is rotatably connected to the second end of the conductive plug 1 via the bearing 6, the operator can easily rotate the grounding terminal 2 to the optimal wiring angle so that the voltage tightening bolt 22 on it is aligned with the direction of the grounding wire, thereby effectively meeting the corresponding requirements of grounding structure fixation and transmission shaft rotation.

[0042] During subsequent maintenance, if the conductive plug 1 becomes loose or has poor contact, it can be pulled out from inside the transmission shaft. Then, the drive gear ring 41 is rotated. The rotation of the drive gear ring 41 is precisely transmitted to the screw 35 located inside the elastic limiting mechanism 3 via the transmission chain consisting of the connecting rod 43 and the first gear 44 and the second gear 45 at both ends. The rotation of the screw 35 drives the nut 36 and the inner elastic element 32, which are engaged with it, to move axially. The axial displacement of the inner elastic element 32 is linearly converted into a radial expansion force on the outer elastic element 31, thereby forcing the outer elastic arm 311 to open outward to a greater extent. After adjustment, the conductive plug 1 is reinserted into the transmission shaft. The outer elastic arm 311 presses tightly against the inner wall of the transmission shaft under the abutment of the inner elastic arm 321, thereby re-fixing the conductive plug 1. Of course, the adjustment of the axial position of the inner elastic element 32 can also be performed before the first insertion to provide different sizes of tightening force to fix the conductive plug 1 inside the transmission shaft according to different working conditions.

[0043] In the description of this invention, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A device for conducting static electricity through a transmission line in a display panel, characterized in that, include: The conductive plug (1) has a first end and a second end disposed opposite to each other along its axial direction, the first end being configured to be inserted into a rotatable transmission shaft; The grounding terminal (2) is rotatably connected to the second end of the conductive plug (1); An elastic limiting mechanism (3) is disposed at the first end of the conductive plug (1) and includes an outer elastic element (31) and an inner elastic element (32) that cooperate with each other. The outer elastic element (31) is elastically fitted between the outer wall of the conductive plug (1) and the inner wall of the transmission shaft to provide a tensioning force that fixes the conductive plug (1) inside the transmission shaft. The inner elastic element (32) is elastically fitted between the conductive plug (1) and the outer elastic element (31), and the inner elastic element (32) is configured to be able to move along the axial direction of the conductive plug (1) to adjust the tensioning force of the outer elastic element (31). When the inner elastic element (32) moves along the axial direction, the tensioning force is adjusted by changing the magnitude of the elastic internal force it applies to the outer elastic element (31).

2. The electrostatic discharge device for a display panel transmission line according to claim 1, characterized in that: The outer elastic member (31) and the inner elastic member (32) respectively have an outer elastic arm (311) and an inner elastic arm (321) that extend radially outward. The angle between the outer elastic arm (311) and the axis is smaller than the angle between the inner elastic arm (321) and the axis, so that the free end of the inner elastic arm (321) can abut against the inner wall of the outer elastic arm (311).

3. The electrostatic discharge device for a display panel transmission line according to claim 2, characterized in that: It also includes an elastic rubber ring (5), which is coaxially fitted at the free end of the elastic limiting mechanism (3); When the elastic limiting mechanism (3) contracts and deforms, the outer elastic arm (311) and / or the inner elastic arm (321) radially press the elastic rubber ring (5).

4. The electrostatic discharge device for a display panel transmission line according to claim 2, characterized in that: A sliding connection structure is provided between the outer elastic arm (311) and the inner elastic arm (321); The sliding connection structure includes a sliding groove (33) and a sliding rail (34) that cooperate with each other, which are used to restrict the inner elastic member (32) to move axially only relative to the outer elastic member (31).

5. The electrostatic discharge device for a display panel transmission line according to claim 1, characterized in that: The elastic limiting mechanism (3) also includes an axial adjustment mechanism; The axial adjustment mechanism includes a screw (35) rotatably sleeved on the conductive plug (1) and a nut (36) screwed onto the outside of the screw (35); the mounting end of the inner elastic element (32) is fixedly connected to the nut (36).

6. The electrostatic discharge device for a display panel transmission line according to claim 5, characterized in that: It also includes a drive assembly (4); the drive assembly (4) includes a drive gear ring (41), a driven gear ring (42), a connecting rod (43), a first gear (44), and a second gear (45); The driving gear ring (41) is rotatably positioned outside the elastic limiting mechanism (3) on the conductive plug (1); the driven gear ring (42) is fixed to the inner wall of the screw (35); the connecting rod (43) is arranged along the axial direction of the conductive plug (1), the first gear (44) and the second gear (45) are respectively fixed to the two ends of the connecting rod (43), and the first gear (44) meshes with the driving gear ring (41), and the second gear (45) meshes with the driven gear ring (42).

7. The electrostatic discharge device for a display panel transmission line according to claim 2, characterized in that: The outer elastic element (31) and the inner elastic element (32) respectively have an outer mounting ring (312) and an inner mounting ring (322); multiple outer elastic arms (311) are arranged in an array around the outer mounting ring (312), and multiple inner elastic arms (321) are arranged in an array around the inner mounting ring (322), with each outer elastic arm (311) and each inner elastic arm (321) having a one-to-one correspondence in position; The outer mounting ring (312) is detachably connected to the conductive plug (1) by bolts.

8. The electrostatic discharge device for a display panel transmission line according to claim 1, characterized in that: The second end of the conductive plug (1) is provided with a shaft stop (11) and an elastic sealing gasket (12) that cooperates with the shaft stop (11). When the first end of the conductive plug (1) is inserted into the transmission shaft, the elastic sealing gasket (12) abuts axially against the end of the transmission shaft to provide the conductive plug (1) with an axial force that causes the elastic limiting mechanism (3) to expand outward.

9. The electrostatic discharge device for a display panel transmission line according to claim 1, characterized in that: The second end of the conductive plug (1) is provided with a groove, and a bearing (6) that rotatably connects the conductive plug (1) and the grounding terminal (2) is fixed in the groove. The groove is also provided with a bearing retaining ring (7) and an elastic open ring (8) for installing the bearing (6); the outer ring of the bearing (6) is restricted to the shoulder step of the groove by the bearing retaining ring (7), the elastic open ring (8) abuts against the outside of the bearing retaining ring (7), and the inner wall of the groove is provided with an annular groove for engaging the elastic open ring (8).

10. A display panel transmission line electrostatic discharge device according to claim 9, characterized in that: The grounding terminal (2) includes a conductive center post (21) and a conductive tightening bolt (22). The conductive center post (21) is fixedly connected to the inner ring of the bearing (6). The conductive tightening bolt (22) is used to press and fix the external connecting wire to the conductive center post (21).

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