An inner-wiring damping hinge and electronic device support

Abstract

The application discloses an inner-wiring damping hinge and an electronic equipment support, which comprises two hinge seats coaxially arranged and relatively rotatable, and a hollow shaft penetrating the interiors of the two hinge seats, wherein a transition channel for a cable to pass through is arranged in the interior of the hollow shaft, the hollow shaft is fixed in the circumferential direction relative to one of the hinge seats, so that the hollow shaft only moves in the circumferential direction synchronously with the hinge seat, and one end of the hollow shaft is provided with an axial pre-tightening structure for matching the rotation friction damping formed in the relative rotation process of the two hinge seats. According to the design that the hollow shaft is fixed in the circumferential direction relative to the second hinge seat, when the cable passes through the transition channel, the radial shearing force applied to the cable due to the hole wall movement is completely eliminated, and the risk that the cable outer skin is cut by the edge or the cable core is directly cut is avoided. The internal channel can be flexibly adapted to the bending and straight-through schemes, and is compatible with assembly processes such as threaded gland and flared riveting, and has extremely high structural versatility and engineering value.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission and electronic equipment support structure technology. Specifically, it relates to an internal cable routing damping hinge that can completely hide cables and prevent radial misalignment and circumferential torsion of cables when the joint is bent at a large angle, and an electronic equipment bracket including the hinge. Background Technology

[0002] Folding brackets are increasingly used in fields such as in-vehicle portable screens, high-end electronic device mounts, and precision instrument cantilever arms. In pursuit of a minimalist appearance and a seamless user experience, device cable management has gradually evolved from traditional external cable management to internal cable management within the bracket.

[0003] However, existing internal cable routing hinges have revealed serious safety and lifespan risks in practical applications. When the support arm is folded and flipped at a large angle (such as 270°), the internal cables often experience severe circumferential torsion and radial misalignment due to the relative rotation of the hollow hinge. This stress can easily lead to fatigue fracture of the wire core metal, causing power outages or even short circuits. In addition, most existing hinges with damping functions are bulky and cannot provide stable and adjustable hovering damping while maintaining a compact appearance. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes an internal wiring damping hinge and an electronic device bracket.

[0005] The technical solution adopted in this invention is: an internal wiring damping hinge, comprising two hinge seats, which are coaxially arranged and can rotate relative to each other, and both hinge seats are provided with wiring cavities inside;

[0006] A hollow shaft is simultaneously inserted inside the two hinge seats. The hollow shaft has a transition channel inside for the cable to pass through between the two hinge seats. The transition channel is directly or indirectly connected to the cable routing cavity.

[0007] One of the two hinge seats is provided with a circumferential fixing structure between itself and the hollow shaft to restrict the circumferential rotation of the hollow shaft relative to the hinge seat, so as to avoid the cable being subjected to misalignment shearing damage when passing through the hollow shaft; when the two hinge seats rotate relative to each other, the cable passing through the hollow shaft is only subjected to bending stress and not circumferential torsional stress.

[0008] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0009] Preferably, one end of the hollow shaft is provided with an axial preload structure for engaging with the two hinge seats during relative rotation to provide rotational friction damping.

[0010] Preferably, the axial pre-tightening structure is a pre-tightening gland or a flared flange structure;

[0011] When the axial preload structure is a preload cover, the preload cover is fixedly installed at one end of the hollow shaft and is used to apply a preload force to the hinge seat along the axial direction of the hollow shaft.

[0012] When the axial preload structure is a flared and flanged structure, the flared and flanged structure is formed by outward extrusion and plastic deformation of one end of the hollow shaft, which is used to apply preload force to the hinge seat along the axial direction of the hollow shaft, and the plastic deformation simultaneously makes the hollow shaft and the corresponding hinge seat relatively fixed.

[0013] Preferably, the pre-tightening cap is a threaded clamping assembly or a cam quick-release assembly that mates with the end of the hollow shaft.

[0014] Preferably, the transition channel is a bent through hole or a straight through hole;

[0015] When the transition channel is a bend, the two ends of the bend extend to the side wall and end of the hollow shaft, respectively. The cable enters from the side wall of the hollow shaft and exits from the end of the hollow shaft.

[0016] When the transition channel is a through hole, the two ends of the through hole extend to the upper and lower ends of the hollow shaft respectively. The axial pre-tightening structure is provided with an opening, and the cable enters the through hole through the opening.

[0017] Preferably, the circumferential fixing structure between the hollow shaft and the hinge seat is any one or a combination of the following: mechanical irregular surface insertion fit, interference fit, welding, structural adhesive bonding, lateral set screw fixing, or flared riveting fixing formed by outward plastic deformation of the hollow shaft end.

[0018] Preferably, the mechanical irregular surface insertion fit includes a non-circular cross-section segment disposed on the outer wall of the hollow shaft and a locking hole disposed in the hinge seat, the locking hole being used for the non-circular cross-section segment to be matched and inserted; the non-circular cross-section segment is one of a polygonal structure, a D-shaped truncated edge structure or a spline structure.

[0019] Preferred options also include:

[0020] The first friction plate is sleeved on the hollow shaft and clamped between the end of the hollow shaft and one of the hinge seats;

[0021] The second friction plate is sleeved on the hollow shaft and clamped between the opposing contact surfaces of the two hinge seats.

[0022] More preferably, two hinge seats are provided, namely a first hinge seat and a second hinge seat, with the first hinge seat located above the second hinge seat, and the internal wiring...

[0023] Damped hinges also include:

[0024] An end cap is provided at the top opening of the first hinge seat and / or the bottom opening of the second hinge seat, for closing the end of the hollow shaft and protecting the internal wiring.

[0025] Based on the aforementioned internal wiring damping hinge, the technical solution adopted in this invention can be applied to an electronic device bracket. In addition to the internal wiring damping hinge described above, the electronic device bracket also includes a first hollow arm fixed to one of the hinge seats and a second hollow arm fixed to the other hinge seat. The two hinge seats are respectively the first hinge seat and the second hinge seat. The cable passes through the second hollow arm, the second hinge seat, the transition channel of the hollow shaft, and the first hinge seat in sequence, and extends into the interior of the first hollow arm.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. Eliminate radial shear force on the cable: By limiting the circumferential relative stillness between the hollow shaft and the second hinge seat, the radial shear force applied to the cable through the center is completely eliminated due to the misalignment of the hole wall, thus avoiding the risk of the cable sheath being cut by the edge or the core being directly cut off.

[0028] 2. Eliminating circumferential force on the cable during hinge seat rotation: When the cable passes through the top of the hollow shaft and enters the first hinge seat, since the two rotate coaxially and the first hinge seat has a sufficient transition cavity, the cable obtains good stress release and flexible clearance space in this area. The rotational movement of the joint does not exert circumferential force on the cable, but is transformed into a gentle, pure bending deformation of the cable within the cavity.

[0029] 3. Highly integrated coaxial multi-functional design: The circumferential fixation of this structure is not limited to specific geometric positions, and the axial clamping is not limited to threads. It achieves an extremely compact coaxial multi-functional integration, including cable routing, anti-circumferential cable torsion, and damping generator, which has strong structural versatility and engineering implementation value.

[0030] 4. Precise and compact damping control: When using a preload gland, the axial normal pressure on multiple friction plates is adjusted using the preload gland, thereby achieving linear and precise control of friction damping. Even in a very small size, it can provide stable and steplessly adjustable friction damping, making it perfectly suited for space-constrained in-vehicle portable displays and minimalist electronic products. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is an overall structural diagram of the electronic device bracket (including a damping hinge) in Embodiment 1 of the present invention;

[0033] Figure 2 This is a cross-sectional schematic diagram of the internal assembly relationship and wiring path of the damping hinge in Embodiment 1 of the present invention.

[0034] Figure 3 This is an exploded view of the damping hinge according to Embodiment 1 of the present invention;

[0035] Figure 4 This is a perspective view of the internal cable connection in Embodiment 1 of the present invention;

[0036] Figure 5 This is a cross-sectional diagram of the internal assembly relationship and wiring path of the damping hinge in Embodiment 2 of the present invention.

[0037] Figure 6 This is an exploded view of the damping hinge in Embodiment 2 of the present invention;

[0038] Figure 7 This is a perspective view of the internal cable connection in Embodiment 2 of the present invention.

[0039] The attached diagram is labeled as follows: 1-First hinge seat; 2-Second hinge seat; 3-Hollow shaft; 301-Bend through hole; 302-Straight through hole; 4-Pre-tightening cap; 5-End cap; 6-First friction plate; 7-Second friction plate; 8-First hollow arm; 9-Second hollow arm; 10-Cable.

[0040] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0043] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0044] Specific implementation plan:

[0045] Example 1 (the transition channel in the hollow shaft 3 adopts a bent through hole 301):

[0046] See Figures 1-4 The present invention is an internal wiring damping hinge, comprising two hinge seats, which are coaxially arranged and can rotate relative to each other, and both hinge seats are provided with wiring cavities inside.

[0047] Hollow shaft 3 is installed inside both hinge seats. The interior of hollow shaft 3 is provided with a transition channel for the cable to pass through between the two hinge seats. The transition channel is directly or indirectly connected to the cable routing cavity.

[0048] A circumferential fixing structure is provided between one of the two hinge seats and the hollow shaft 3 to restrict the circumferential rotation of the hollow shaft 3 relative to the hinge seat, so as to avoid the cable being subjected to misalignment shearing damage when passing through the hollow shaft 3; when the two hinge seats rotate relative to each other, the cable passing through the hollow shaft 3 only bears bending stress and not circumferential torsional stress.

[0049] As a preferred embodiment of this invention, one end of the hollow shaft 3 is provided with an axial preload structure for providing rotational friction damping during the relative rotation of the two hinge seats.

[0050] Then, in this embodiment, the axial pre-tightening structure is a pre-tightening cap 4 or a flared flange structure;

[0051] When the axial preload structure is a preload cover 4, the preload cover 4 is fixedly installed at one end of the hollow shaft 3 and is used to apply a preload force to the hinge seat along the axial direction of the hollow shaft 3.

[0052] When the axial preload structure is a flared and flanged structure, the flared and flanged structure is formed by outward extrusion and plastic deformation at one end of the hollow shaft 3, which is used to apply preload force to the hinge seat along the axial direction of the hollow shaft 3, and the plastic deformation simultaneously makes the hollow shaft 3 and the corresponding hinge seat relatively fixed.

[0053] Next, in this embodiment, the pre-tightening cap 4 is a threaded clamping assembly or a cam quick-release assembly that mates with the end of the hollow shaft 3.

[0054] Please see Figure 3 In this embodiment, it also includes:

[0055] The first friction plate 6 is sleeved on the hollow shaft 3 and clamped between the end of the hollow shaft 3 and one of the hinge seats;

[0056] The second friction plate 7 is sleeved on the hollow shaft 3 and clamped between the relative contact end faces of the two hinge seats.

[0057] Here, when using the pre-tightening cap 4, which is threaded to the end of the hollow shaft 3, the axial positive pressure on the first friction plate 6 and the second friction plate 7 is adjusted using the pre-tightening cap 4, thereby achieving linear and precise control of the friction damping. Even in a very small size, it can provide stable and steplessly adjustable friction damping, making it perfectly suited for space-constrained in-vehicle portable displays and minimalist electronic products.

[0058] In this embodiment, the transition channel is a bent through hole 301, with both ends of the bent through hole 301 extending to the side wall and end of the hollow shaft 3, respectively. The cable enters from the side wall of the hollow shaft 3 and exits from the end of the hollow shaft 3.

[0059] In practical applications, the circumferential fixing structure between the hollow shaft 3 and the hinge seat can be any one or a combination of the following: mechanical irregular surface insertion fit, interference fit, welding, structural adhesive bonding, lateral set screw fixing, or flared riveting fixing formed by outward plastic deformation of the end of the hollow shaft 3.

[0060] Here, by setting a circumferential fixing structure between the hollow shaft 3 and the hinge seat, the circumferential relative stationary between the hollow shaft 3 and the second hinge seat 2 is limited, and the radial shear force applied to the cable through the center is completely eliminated due to the misalignment of the hole wall, thus increasing the fatigue life by a factor of two.

[0061] For example, when the hollow shaft 3 and the hinge seat are circumferentially rotated and fixed by mechanical irregular surface plug-in fit, a non-circular cross-section segment can be set on the outer wall of the hollow shaft 3, and a locking hole can be set in the hinge seat. The locking hole is used for matching and plugging the non-circular cross-section segment; the non-circular cross-section segment is one of a polygonal structure, a D-shaped tangent structure or a spline structure.

[0062] More specifically, in this embodiment, for ease of understanding, two hinge seats are provided, namely a first hinge seat 1 and a second hinge seat 2. The first hinge seat 1 is located above the second hinge seat 2, and the internal wiring is provided.

[0063] Damped hinges also include:

[0064] End cap 5 is located at the top opening of the first hinge seat 1 and / or the bottom opening of the second hinge seat 2, and is used to close the end of the hollow shaft 3 and protect the internal wiring.

[0065] Please see Figures 1-4 Based on the aforementioned internal wiring damping hinge, the technical solution adopted in this invention can be applied to an electronic device bracket. In addition to the internal wiring damping hinge described above, the electronic device bracket also includes a first hollow arm 8 fixed to one of the hinge seats and a second hollow arm 9 fixed to the other hinge seat. The cable passes through the transition channel of the second hollow arm 9, the second hinge seat 2, the hollow shaft 3, and the first hinge seat 1 in sequence, and extends into the interior of the first hollow arm 8.

[0066] Combination Figure 2 Cross-sectional view and Figure 3 As shown in the exploded view, the hollow shaft 3 passes sequentially through the first friction plate 6, the first hinge seat 1, the second friction plate 7, and the second hinge seat 2. The lower end of the hollow shaft 3 is threadedly connected to the solid pre-tightening cap 4. An end cap 5 is engaged or glued to the top opening of the first hinge seat 1 to close the internal structure and improve the flatness of the appearance.

[0067] In this embodiment, the lower outer wall of the hollow shaft 3 is machined with an external hexagonal feature, and the second hinge seat 2 is provided with a matching internal hexagonal locking hole. After the hollow shaft 3 is installed, the two are in a circumferentially fixed state.

[0068] Cable routing and anti-twist principle:

[0069] Combination Figure 4 As shown in the perspective view, the cable is introduced into the inner cavity of the second hinge seat 2 from the second hollow arm 9, then passes through the opening on the side of the hollow shaft 3 and extends upward along the bent through hole 301, finally exiting from the upper end of the hollow shaft 3 and entering the first hinge seat 1. Since the hollow shaft 3 and the second hinge seat 2 are in a relatively fixed state of synchronous stillness, the cable passing through the interior will never be torn or sheared circumferentially as the first hinge seat 1 rotates.

[0070] When the cable passes through the top of the hollow shaft 3 and enters the first hinge seat 1, the two rotate coaxially, and the first hinge seat 1 has a sufficient transition cavity, providing the cable with good stress release and flexible clearance space in this area. The rotational movement of the joint does not apply circumferential force to the cable, but is instead converted into a gentle, pure bending deformation of the cable within the cavity, effectively preventing damage to the cable during use.

[0071] Furthermore, the circumferential fixing structure in this embodiment is not limited to a specific geometric positioning, and the axial pre-tightening structure is not limited to threads. It achieves an extremely compact coaxial multi-functional integration, including cable routing, anti-circumferential cable torsion, and a damping generator, which has strong structural versatility and engineering implementation value.

[0072] Example 2 (the transition channel in the hollow shaft 3 adopts a through hole 302):

[0073] See Figures 5-7 Unlike Embodiment 1, in this embodiment, the transition channel is a through hole 302. The two ends of the through hole 302 extend to the upper and lower ends of the hollow shaft 3, respectively. The axial pre-tightening structure is provided with an opening, and the cable enters the through hole 302 through the opening.

[0074] The anti-rotation principle and basic assembly logic of this embodiment are the same as those of Embodiment 1. The main differences are in the hollow shaft 3 form, the pre-tightening cover 4 form, and the cable transition path.

[0075] Combination Figure 5 Cross-sectional view and Figure 6 As shown in the exploded view, the hollow shaft 3 in this embodiment is machined with a through hole 302 inside; correspondingly, the pre-tightening cap 4 is designed as a hollow nut-shaped structure, and its axial length is shortened compared with that of Embodiment 1.

[0076] Regarding the wiring path, combined with Figure 7 As can be seen from the perspective view, after the cable is introduced into the second hinge seat 2 from the second hollow arm 9, it does not pass through the side wall opening, but directly and vertically passes through the center of the hollow pre-tightening cover 4, and then passes straight through the through hole 302 of the hollow shaft 3 from bottom to top, and finally passes out from the top into the first hinge seat 1.

[0077] To close the bottom opening created by the through-hole 302 structure and protect the cable, an additional end cap 5 is added to the bottom of the second hinge seat 2. This through-hole solution eliminates the right-angle bend in the middle of the cable, making it particularly suitable for wiring scenarios with thicker wires or high requirements for bending radius (R angle).

[0078] Example 3 (Implementation method of extremely simple through hole 302 using hollow cylinder extrusion and flaring):

[0079] This embodiment proposes a simplified mass production scheme that further reduces the number of parts based on the through-hole 302 structure of Embodiment 2.

[0080] In this embodiment, the hollow shaft 3 is initially a hollow cylinder (e.g., a copper tube or a stainless steel tube) without hexagonal irregular processing on its surface, and this embodiment does not include a separate pre-tightening cap 4.

[0081] Assembly structure and damping principle: After the hollow shaft 3 passes through the friction plate, the first hinge seat 1 and the second hinge seat 2 in sequence, the bottom opening end of its bottom through hole 302 exposes the bottom surface of the second hinge seat 2. At this time, the bottom opening end of the hollow shaft 3 is mechanically pressed outward by a riveting die (i.e., flaring and riveting or stamping and flanging process).

[0082] The outward extrusion creates a plastic deformation flaring structure that tightly engages with the bottom hole of the second hinge seat 2, resulting in a physical lock-in between the hollow shaft 3 and the second hinge seat 2 (forming a relatively fixed structure that prevents rotation). Simultaneously, the axial tensile force generated during the extrusion flaring process tightly compresses the first hinge seat 1, the second hinge seat 2, and the internal friction plates, thus directly providing the frictional damping required for relative rotation.

[0083] Cable routing: After the cable is introduced into the second hinge seat 2 from the second hollow arm 9, it passes directly and vertically into the center of the outwardly extruded flared opening and extends upward along the through hole 302 of the hollow shaft 3. This embodiment utilizes a single part to achieve three core functions simultaneously: through cable routing, anti-rotation locking, and damping preload.

[0084] In other embodiments, the hexagonal locking method in the above embodiments can be equivalently replaced. To achieve relative fixation between the hollow shaft 3 and the hinge seat, it can also be pressed into the hinge seat by an interference fit, or fixed by injecting industrial structural adhesive or performing laser spot welding after the two are assembled. As long as the technical effect of "relative fixation and internal wiring without twisting" is achieved, it will be completely consistent with the aforementioned embodiments.

[0085] The above description of an internal wiring damping hinge and electronic device bracket of the present invention is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An internally routed damping hinge, characterized in that, It includes two hinge seats, which are coaxially arranged and can rotate relative to each other. Both hinge seats have a wiring cavity inside. A hollow shaft (3) is simultaneously installed inside the two hinge seats. The hollow shaft (3) has a transition channel inside for the cable to pass through between the two hinge seats. The transition channel is directly or indirectly connected to the cable routing cavity. One of the two hinge seats is provided with a circumferential fixing structure between itself and the hollow shaft (3) to limit the circumferential rotation of the hollow shaft (3) relative to the hinge seat, so as to avoid the cable being subjected to misalignment shearing damage when passing through the hollow shaft (3); when the two hinge seats rotate relative to each other, the cable passing through the hollow shaft (3) only bears bending stress and not circumferential torsional stress.

2. The internal wiring damping hinge according to claim 1, characterized in that, One end of the hollow shaft (3) is provided with an axial preload structure for forming a rotational friction damping during the relative rotation of the two hinge seats.

3. The internal wiring damping hinge according to claim 2, characterized in that, The axial pre-tightening structure is a pre-tightening cap (4) or a flared and flanged structure; When the axial pre-tightening structure is a pre-tightening cover (4), the pre-tightening cover (4) is fixedly installed at one end of the hollow shaft (3) and is used to apply a pre-tightening force to the hinge seat along the axial direction of the hollow shaft (3); When the axial pre-tightening structure is a flared and flanged structure, the flared and flanged structure is formed by outward extrusion plastic deformation at one end of the hollow shaft (3), which is used to apply pre-tightening force to the hinge seat along the axial direction of the hollow shaft (3), and the plastic deformation simultaneously makes the hollow shaft (3) and the corresponding hinge seat relatively fixed.

4. The internal wiring damping hinge according to claim 3, characterized in that, The pre-tightening cap (4) is a threaded clamping assembly or a cam quick-release assembly that mates with the end of the hollow shaft (3).

5. The internal wiring damping hinge according to claim 1, characterized in that, The transition channel is a bent through hole (301) or a straight through hole (302); When the transition channel is a bend (301), the two ends of the bend (301) extend to the side wall and end of the hollow shaft (3), respectively. The cable enters from the side wall of the hollow shaft (3) and exits from the end of the hollow shaft (3). When the transition channel is a through hole (302), the two ends of the through hole (302) extend to the upper and lower ends of the hollow shaft (3), respectively. The axial pre-tightening structure is provided with an opening, and the cable enters the through hole (302) through the opening.

6. The internal wiring damping hinge according to claim 5, characterized in that, The circumferential fixing structure between the hollow shaft (3) and the hinge seat is any one or a combination thereof, such as mechanical irregular surface insertion fit, interference fit, welding, structural adhesive bonding, lateral set screw fixing, or flared riveting fixing formed by outward plastic deformation of the end of the hollow shaft (3).

7. The internal wiring damping hinge according to claim 6, characterized in that, The mechanical irregular surface insertion fit includes a non-circular cross-section segment disposed on the outer wall of the hollow shaft (3) and a locking hole disposed in the hinge seat. The locking hole is used for the non-circular cross-section segment to be matched and inserted. The non-circular cross-section segment is one of a polygonal structure, a D-shaped tangent structure or a spline structure.

8. The internal wiring damping hinge according to claim 1, characterized in that, Also includes: The first friction plate (6) is sleeved on the hollow shaft (3) and clamped between the end of the hollow shaft (3) and one of the hinge seats; The second friction plate (7) is sleeved on the hollow shaft (3) and held between the relative contact end faces of the two hinge seats.

9. The internal wiring damping hinge according to claim 1, characterized in that, Two hinge seats are provided, namely a first hinge seat (1) and a second hinge seat (2), with the first hinge seat (1) located above the second hinge seat (2). The internal wiring damping hinge also includes: End cap (5), the end cap (5) is provided at the top opening of the first hinge seat (1) and / or the bottom opening of the second hinge seat (2), for closing the end of the hollow shaft (3) and protecting the internal wiring.

10. An electronic device bracket, characterized in that, The device includes the internal wiring damping hinge as described in any one of claims 1-9, and further includes a first hollow arm (8) fixed to one of the hinge seats and a second hollow arm (9) fixed to the other hinge seat; the two hinge seats are respectively a first hinge seat (1) and a second hinge seat (2), and the cable (10) passes through the second hollow arm (9), the second hinge seat (2), the transition channel of the hollow shaft (3), the first hinge seat (1) in sequence, and extends into the interior of the first hollow arm (8).

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