A rotating shaft capable of having a built-in power cord and a swivel chair having the rotating shaft

Abstract

The present invention relates to the field of seats, a rotating shaft with a built-in power cord, comprising an outer tube, and a shaft core assembly arranged inside the outer tube and capable of rotating relative to the outer tube, one end of the shaft core assembly extending from the outer tube for connecting a rotating component; a power cord assembly is inserted inside the shaft core assembly, the power cord assembly comprises a first wiring segment partially inserted inside the shaft core assembly, and a second wiring segment capable of connecting to the first wiring segment for power supply; a first wiring terminal at the end of the first wiring segment is embedded in the shaft core assembly and rotates synchronously with the shaft core assembly, after the first wiring terminal at the end of the first wiring segment connects with the second wiring terminal at the upper end of the second wiring segment, the connecting portion can rotate circumferentially along the shaft core line of the shaft core assembly. This solution solves the problem of knotting of the internal circuit wiring during rotation; it overcomes the circuit wiring difficulty of two components that rotate relative to each other through a rotating shaft, and a common set of power supplies can be used to power the two components.

Description

Technical Field

[0001] The invention relates to the field of seats, in particular to a rotating shaft capable of being built with a power cord and a swivel chair with the rotating shaft. Background Art

[0002] Chair seats are a common daily life and office supplies. There are many types of seats, including fixed tables and chairs (such as most dining chairs), swivel chairs and rocking chairs. Among them, swivel chairs have become a very common chair in life due to their larger activity space, especially in offices, where their usage rate is very high.

[0003] Traditional swivel chairs generally only have the functions of height adjustment and rotation. With the popularization of these functions, the additional functions of swivel chairs on the current market have also increased accordingly. For example, the Chinese utility model with the announcement number "CN206324500U" discloses a multimedia innovative reclining chair with built-in Bluetooth speakers, which adds speakers, Bluetooth speakers and a control panel to the swivel chair. In this way, the chair has the function of audio playback, which increases the user experience.

[0004] In addition, with the vigorous development of the e-sports industry, various e-sports related peripheral products have emerged in an endless stream. In order to pursue the gaming experience, professional e-sports players and most game players have special requirements for the atmosphere and visual effects of the entire game. Against this background, e-sports chairs came into being. In addition to pursuing the ultimate performance, various e-sports related products launched on the market also have a certain pursuit of cool effects on the appearance. The Chinese invention patent publication with publication number "CN108652308A" records a seat with side strip lights, including a seat body and a side strip light module, the side strip lights are arranged along the outer edge curve of the cushion part of the seat body or the outer edge curve of the chair body, and the visual effect of the e-sports chair is enhanced by emitting light through the side strip light module, thereby satisfying the user's pursuit of cool effects.

[0005] For example, the seats disclosed in the Chinese utility model with the announcement number "CN206324500U" and the Chinese invention patent publication "CN108652308A" need to be equipped with electrical components on the seat, such as the controller, speaker and light strip mentioned above. On this basis, the applicant recently submitted a Chinese utility model patent application with the application number "2019220983494", which records a luminous chair leg, a base, a strip light, a light-guiding material layer, and a power supply component. The base is provided with at least one groove, the strip light is arranged in the groove on the base, the light-guiding material layer covers the strip light, the light is refracted through the light-guiding material layer to form flexible light, and the power supply component is connected to the strip light. The beneficial effect of the utility model is that the strip light is covered by a light-guiding material layer, so that the light is refracted in the light-guiding material layer, so that the luminous seat has soft light, high comfort, good visual effect, and the overall seat looks high-end. It also provides a way to illuminate the bottom of the seat to meet the pursuit of cool effects by different users.

[0006] Based on the above-mentioned prior art and the luminous chair legs previously applied for by the applicant, the chair is required to be able to be powered on in both the seat and the legs, and the rotation function required by the swivel chair needs to be taken into consideration. A relatively simple solution is to set up separate power supplies for the seat and the legs, so that the swivel chair can achieve the function that the wiring of the wires and the rotation of the swivel chair do not affect each other. However, it is obviously possible to achieve common power supply, and the solution of using two sets of power supplies separately while sharing the same power supply is not applicable in terms of use cost and installation structure, especially the placement of the power supply in the chair legs, which is even more inconvenient. However, if the solution of achieving the same power supply through wiring has the problem of the wires getting tangled when the swivel chair rotates; the invention recorded in this application is to solve this technical problem. Summary of the invention

[0007] In order to solve the above problems, the first purpose of the present invention is to provide a rotating shaft with a built-in power cord, which solves the problem of circuit wiring inside it getting tangled during rotation; it overcomes the circuit routing difficulty of two components that rotate relative to each other through the rotating shaft, and a common power supply can be used to power the two components.

[0008] A second object of the present invention is to provide a swivel chair having the rotation axis.

[0009] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0010] A rotating shaft capable of having a built-in power cord comprises an outer tube, and an axis core component which is arranged inside the outer tube and can rotate relative to the outer tube, wherein one end of the axis core component extends out of the outer tube for connecting a rotating component; the characteristic is that a power cord component is passed through the axis core component, the power cord component comprises a first wiring segment which is partially passed through the axis core component, and a second wiring segment which can be concentrically connected to the first wiring segment and energized; a first wiring terminal at the end of the first wiring segment is embedded in the axis core component and rotates synchronously with the axis core component, and after the first wiring terminal at the end of the first wiring segment is concentrically connected to the second wiring terminal at the upper end of the second wiring segment, the connecting portion thereof can rotate circumferentially along the axis core line of the axis core component.

[0011] The present invention adopts the above-mentioned technical solution, which relates to a rotating shaft that can be built-in with a power cord, the rotating shaft includes an outer tube, and an axis core component arranged inside the outer tube and capable of rotating relative to the outer tube; one end of the axis core component extends out of the outer tube for connecting a rotating component (such as connecting to the lower end face of a seat in a seat); when in use, the rotating component can drive the axis core component to rotate relative to the outer tube, thereby achieving support and rotation of the rotating component. On this basis, a power cord component is inserted into the axis core component, and the power cord component includes a first wiring segment and a second wiring segment, part of the first wiring segment is inserted into the axis core component, and part is led out to the outside by the axis core component, and the first wiring terminal at the end of the first wiring segment and the second wiring terminal at the upper end of the second wiring segment can be relatively concentrically connected, and concentric connection means that the two connecting ends of the first wiring terminal and the second wiring terminal have the same center of the circle. As described above, the rotating component can drive the shaft core assembly to rotate relative to the outer tube, and in the scheme where the first terminal and the second terminal are concentrically docked, the first terminal is embedded in the shaft core assembly and rotates synchronously with the shaft core assembly; and the docking position of the first terminal and the second terminal can rotate circumferentially along the axis of the shaft core assembly. In this way, when the rotating component drives the shaft core assembly to rotate relative to the outer tube, the first terminal and the first wiring segment are synchronously driven to rotate. Although the first terminal rotates relative to the second terminal, its docking position can adapt to the above rotation, that is, it will not disengage during rotation. In this way, this scheme solves the problem of circuit wiring inside the rotating shaft becoming tangled during rotation, and realizes the circuit wiring problem of two components that rotate relative to each other through the rotating shaft, and a common set of power supplies can be used to power the two components.

[0012] Preferably, a terminal post or a terminal slot is provided on the end face of the first terminal, and a terminal slot or a terminal post is provided on the end face of the second terminal; the end face of the first terminal abuts against the end face of the second terminal, and power is supplied by the terminal post being inserted into the terminal slot.

[0013] Preferably, the terminal is a cylinder with the axis of the shaft core assembly as the center, and the terminal slot is a circular slot arranged around the cylinder; the outer wall of the terminal is in contact with the inner wall of the terminal slot. In this technical solution, the first terminal and the second terminal are energized by the terminal being inserted into the terminal slot, and a firm electrical connection is achieved through the cooperation between the terminal and the terminal slot. At the same time, the terminal is a cylinder with the axis of the shaft core assembly as the center, and the terminal slot is a circular slot arranged around the cylinder. In this way, when the first terminal rotates with the shaft core assembly, the terminal can rotate in the terminal slot, and during the rotation, the outer wall of the terminal is in contact with the inner wall of the terminal slot, so that it is always energized.

[0014] Preferably, the shaft core assembly includes a rotating shaft connected to the first terminal, and a connecting shaft with an upper end extending out of the outer tube for connecting to a rotating component; the rotating shaft and the connecting shaft are both hollow shafts and are circumferentially linked; the outer wall of at least one of the shafts in the rotating shaft and the connecting shaft is directly or indirectly rotatably matched with the inner wall of the outer tube. This technical solution is a specific refinement of the shaft core assembly. In this technical solution, the shaft core assembly includes a rotating shaft and a connecting shaft, wherein the rotating shaft is connected to the first terminal, that is, it drives the first terminal to rotate synchronously, and the connecting shaft is circumferentially linked with the rotating shaft and the upper end extends out of the outer tube for connecting to a rotating component. When rotating, the external rotating component drives the connecting shaft, the rotating shaft and the first terminal to rotate synchronously; the outer wall of at least one of the shafts in the rotating shaft and the connecting shaft is directly or indirectly rotatably matched with the inner wall of the outer tube; positioning during rotation is achieved to prevent radial loosening.

[0015] Preferably, a limiting sleeve is provided inside the outer tube, the connecting shaft is inserted into the limiting sleeve, and the connecting shaft rotates relative to the limiting sleeve. In this technical solution, since the upper end of the connecting shaft extends out of the outer tube for connecting the rotating component, the connecting shaft is the main connecting and force-bearing component, and the connecting shaft is rotated relative to the limiting sleeve to achieve rotational positioning, thereby avoiding radial looseness and swaying caused by instability.

[0016] Preferably, the rotating shaft is axially positioned inside the outer tube through a positioning assembly, and the rotating shaft is sleeved with the connecting shaft to achieve circumferential positioning linkage.

[0017] Preferably, a bottom plate is provided at the bottom of the outer tube, and the rotating shaft passes through the axial hole in the center of the bottom plate, and the rotating shaft is mounted inside the outer tube through a positioning assembly; the positioning assembly includes a pad body sleeved on the rotating shaft above the bottom plate, and a screw-fixed component connected to the end of the rotating shaft below the bottom plate. In this technical solution, the rotating shaft is axially positioned inside the outer tube through the positioning assembly, and the pad body in the positioning assembly is located above the bottom plate of the outer tube, and is sleeved with the rotating shaft for supporting the rotating shaft, and can reduce friction resistance during the rotation process of the rotating shaft, and rotate freely; the screw-fixed component (such as a nut or a nut) in the positioning assembly is located below the bottom plate of the outer tube, and is threadedly connected to the end of the rotating shaft below the bottom plate, and the rotating shaft is positioned to prevent the rotating shaft from upwardly detaching from the axial hole in the center of the bottom plate; the screw-fixed component and the pad body of the positioning assembly realize axial positioning of the rotating shaft, and the pad body can include a plastic gasket and a metal gasket on it; the metal gasket is directly in contact with the rotating shaft for support, and the relative friction force is smaller.

[0018] Preferably, the inner cavity side wall of the rotating shaft includes a positioning end face for axially positioning the first terminal and limiting the upward movement of the first terminal; when the first terminal is installed in the inner cavity of the rotating shaft, a portion of the outer wall of the first terminal abuts against the positioning end face, and the lower end of the first terminal abuts against the screw-fastening component. On the basis of the above-mentioned positioning component, the screw-fastening component in the positioning component also abuts against the lower end of the first terminal, and at the same time makes the upper end face of the first terminal abut against the positioning end face on the inner cavity side wall of the rotating shaft, thereby realizing the positioning of the first terminal; when in use, the outer diameter of the first terminal can also be made slightly larger than the inner diameter of the inner cavity side wall of the rotating shaft, and fixed by a tightening fit.

[0019] A swivel chair, characterized in that it includes a swivel shaft with a built-in power cord as described above, the lower end of the outer tube of the swivel shaft is connected to the chair leg, and the upper end of the shaft core assembly of the swivel shaft is directly or indirectly connected to the lower end surface of the seat through a reclining tray. The technical solution relates to a swivel chair, which uses the above-mentioned swivel shaft; when both the seat part and the chair leg part are provided with electrical components, the same power supply can be used to realize power supply. It also solves the problem that the internal circuit wiring will be tangled during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front cross-sectional view of the rotating shaft in Example 1.

[0021] Figure 2 This is a three-dimensional cross-sectional view of Example 1 with the power cord assembly removed.

[0022] Figure 3 Schematic diagram of the structure of the second terminal.

[0023] Figure 4 It is a schematic diagram of the structure of the first connecting terminal. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] Embodiment 1:

[0030] like Figures 1 to 4 A rotating shaft with a built-in power cord is shown, comprising an outer tube 1, and a shaft core assembly arranged inside the outer tube 1 and capable of rotating relative to the outer tube 1, one end of the shaft core assembly protruding from the outer tube 1 for connecting a rotating component. A power cord assembly is inserted into the shaft core assembly, and the power cord assembly comprises a first wiring segment 31 partially inserted into the shaft core assembly, and a second wiring segment 32 capable of being concentrically docked with the first wiring segment 31 and energized. A first wiring terminal 33 at the end of the first wiring segment 31 is embedded in the shaft core assembly and rotates synchronously with the shaft core assembly. After the first wiring terminal 33 at the end of the first wiring segment 31 is concentrically docked with the second wiring terminal 34 at the upper end of the second wiring segment 32, the docking portion thereof can rotate circumferentially along the axis of the shaft core assembly.

[0031] This embodiment relates to a rotating shaft that can be built with a power cord, the rotating shaft includes an outer tube 1, and an axis core component arranged inside the outer tube 1 and capable of rotating relative to the outer tube 1. One end of the axis core component extends out of the outer tube 1 for connecting a rotating component (such as connecting the lower end surface of the seat in a seat). When in use, the rotating component can drive the axis core component to rotate relative to the outer tube 1, thereby achieving the support and rotation of the rotating component. On this basis, a power cord component is inserted inside the axis core component, and the power cord component includes a first wiring segment 31 and a second wiring segment 32. Part of the first wiring segment 31 is inserted into the axis core component, and part of it is led outward by the axis core component. The first wiring terminal 33 at the end of the first wiring segment 31 and the second wiring terminal 34 at the upper end of the second wiring segment 32 can be relatively concentrically connected. As described above, the rotating component can drive the axis core component to rotate relative to the outer tube 1, and in the scheme where the first wiring terminal 33 and the second wiring terminal 34 are concentrically connected, the first wiring terminal 33 is embedded in the axis core component and rotates synchronously with the axis core component. Furthermore, the docking part between the first terminal 33 and the second terminal 34 can rotate along the circumferential axis of the shaft core assembly. In this way, when the rotating component drives the shaft core assembly to rotate relative to the outer tube 1, the first terminal 33 and the first wiring segment 31 are synchronously driven to rotate. Although the first terminal 33 rotates relative to the second terminal 34, its docking part can adapt to the above rotation, that is, it will not disengage during the rotation. In this way, the solution solves the problem of the circuit wiring inside the rotating shaft being tangled during the rotation process, and realizes the circuit wiring problem of the two components that rotate relative to the rotating shaft, and a common set of power supplies can be used to power the two components.

[0032] In a specific implementation scheme, a terminal 35 or a wiring groove is provided on the end face of the first terminal 33, and a wiring groove 36 or a terminal is provided on the end face of the second terminal 34. The end face of the first terminal 33 is against the end face of the second terminal 34, and the terminal is inserted into the wiring groove to realize power supply. The terminal is a cylinder with the axis of the shaft core assembly as the center, and the wiring groove is a circular groove arranged around the cylinder. The outer side wall of the terminal is in contact with the inner side wall of the wiring groove. In this technical scheme, the first terminal 33 and the second terminal 34 are powered by the terminal inserted into the wiring groove, and a firm electrical connection is achieved by the cooperation between the terminal and the wiring groove. At the same time, the terminal is a cylinder with the axis of the shaft core assembly as the center, and the wiring groove is a circular groove arranged around the cylinder. In this way, when the first terminal 33 rotates with the shaft core assembly, the terminal can rotate in the wiring groove, and the outer side wall of the terminal is in contact with the inner side wall of the wiring groove during the rotation, so that power is always on.

[0033] like Figure 1 and 2As shown, the shaft core assembly includes a rotating shaft 21 connected to the first terminal 33, and a connecting shaft 22 whose upper end extends out of the outer tube 1 for connecting a rotating component. The rotating shaft 21 and the connecting shaft 22 are both hollow shafts and are circumferentially linked. The outer wall of at least one of the shafts of the rotating shaft 21 and the connecting shaft 22 is directly or indirectly rotated with the inner wall of the outer tube 1. This technical solution is a specific refinement of the shaft core assembly. In this technical solution, the shaft core assembly includes a rotating shaft 21 and a connecting shaft 22, wherein the rotating shaft 21 is connected to the first terminal 33, that is, it drives the first terminal 33 to rotate synchronously, and the connecting shaft 22 is circumferentially linked with the rotating shaft 21 and the upper end extends out of the outer tube 1 for connecting a rotating component. When rotating, the external rotating component drives the connecting shaft 22, the rotating shaft 21 and the first terminal 33 to rotate synchronously. The outer wall of at least one of the shafts of the rotating shaft 21 and the connecting shaft 22 is directly or indirectly rotated with the inner wall of the outer tube 1. Achieve positioning during rotation and prevent radial looseness. In a specific solution, a limiting sleeve 23 is provided inside the outer tube 1, and the connecting shaft 22 is inserted into the limiting sleeve 23, and the connecting shaft 22 rotates relative to the limiting sleeve 23. In this technical solution, since the upper end of the connecting shaft 22 extends out of the outer tube 1 for connecting the rotating parts, the connecting shaft 22 is the main connecting and force-bearing part, and the connecting shaft 22 is rotated with the limiting sleeve 23 in the inner wall of the outer tube 1 to achieve rotation positioning, and avoid radial looseness and unstable swinging.

[0034] like Figure 1 and 2As shown, the rotating shaft 21 is axially positioned and arranged inside the outer tube 1 through a positioning assembly, and the rotating shaft 21 is sleeved with the connecting shaft 22 to achieve circumferential positioning linkage. In a specific scheme, a bottom plate 11 is provided at the bottom of the outer tube 1, and the rotating shaft 21 passes through the axial hole in the center of the bottom plate 11, and the rotating shaft 21 is mounted inside the outer tube 1 through a positioning assembly. The positioning assembly includes a pad body sleeved on the rotating shaft 21 above the bottom plate 11, and a screw-fixed component 41 connected to the end of the rotating shaft 21 below the bottom plate 11. In this technical solution, the rotating shaft 21 is axially positioned and arranged inside the outer tube 1 through a positioning assembly, and the pad body in the positioning assembly is located above the bottom plate 11 of the outer tube 1, and is sleeved with the rotating shaft 21 to support the rotating shaft 21, and can reduce friction resistance during the rotation of the rotating shaft, and rotate freely. The screw-fixing component 41 (such as a nut or a nut) in the positioning assembly is located below the bottom plate 11 of the outer tube 1, and is threadedly connected to the end of the rotating shaft 21 below the bottom plate 11 to position the rotating shaft 21 and prevent the rotating shaft 21 from upwardly escaping from the axial hole in the center of the bottom plate 11. The screw-fixing component 41 and the pad body of the positioning assembly realize the axial positioning of the rotating shaft 21, and the pad body may include a plastic gasket 42 and a metal gasket 43 thereon. The metal gasket is in direct contact with the rotating shaft 21 for support, and the relative friction force is smaller.

[0035] The inner cavity side wall of the rotating shaft 21 includes a positioning end face 24 for axially positioning the first terminal 33 and limiting the upward movement of the first terminal 33. When the first terminal 33 is installed in the inner cavity of the rotating shaft 21, a portion of the outer wall of the first terminal 33 abuts against the positioning end face 24, and the lower end of the first terminal 33 abuts against the screw-fixing component 41. On the basis of the above-mentioned positioning component, the screw-fixing component 41 in the positioning component also abuts against the lower end of the first terminal 33, and at the same time makes the upper end face of the first terminal 33 abut against the positioning end face 24 on the inner cavity side wall of the rotating shaft 21, thereby realizing the positioning of the first terminal 33. When in use, the outer diameter of the first terminal 33 can also be made slightly larger than the inner diameter of the inner cavity side wall of the rotating shaft 21, and fixed by a tightening fit.

[0036] The second terminal 34 may be inserted into the cavity of the rotating shaft 21 and docked with the first terminal 33, or may be located outside the rotating shaft 21 and docked with the first terminal 33. As shown in the figure, the second terminal 34 in this embodiment extends into the cavity of the rotating shaft 21 through the screw-fastening component 41 and docks with the first terminal 33.

[0037] Embodiment 2:

[0038] This embodiment relates to a swivel chair, including a swivel shaft with a built-in power cord as described in Example 1, wherein the lower end of the outer tube 1 of the swivel shaft is connected to the chair leg, and the upper end of the shaft core assembly of the swivel shaft is directly or indirectly connected to the lower end surface of the seat through a reclining tray. The technical solution relates to a swivel chair, which adopts the above-mentioned swivel shaft. When both the seat part and the chair leg part are provided with electrical components, power supply can be achieved by using the same power supply. And the problem of the internal circuit wiring being tangled during the rotation process is solved.

[0039] In this solution, the outer end of the first wiring segment 31 is connected to a power source or an electrical component, and the end of the second wiring segment 32 is connected to an electrical component or a power source. In a specific application, a power source is generally provided on the lower end surface or side of the seat, so that the outer end of the first wiring segment 31 is connected to the power source on the lower end surface or side of the seat, and the end of the second wiring segment 32 is connected to the electrical component on the chair leg, such as the light strip on the luminous chair leg used in a Chinese utility model patent application with application number "2019220983494" recently submitted by the applicant. The power source on the seat can also be connected to the sound system on the side of the seat or the light strip on the seat, that is, the same set of power is used to power the electrical components on the seat and the electrical components on the chair leg.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A rotating shaft capable of having a built-in power cord, comprising an outer tube (1), and an axis core component arranged inside the outer tube (1) and capable of rotating relative to the outer tube (1), wherein one end of the axis core component extends out of the outer tube (1) for connecting to a rotating component; characterized in that: A power cord assembly is inserted into the shaft assembly, and the power cord assembly includes a first wiring segment (31) partially inserted into the shaft assembly, and a second wiring segment (32) that can be coaxially connected to the first wiring segment (31) for power supply; a first wiring terminal (33) at the end of the first wiring segment (31) is embedded in the shaft assembly and rotates synchronously with the shaft assembly, and after the first wiring terminal (33) at the end of the first wiring segment (31) and the second wiring terminal (34) at the upper end of the second wiring segment (32) are coaxially connected, the connection portion can rotate circumferentially along the axis of the shaft assembly; The shaft core assembly comprises a rotating shaft (21) connected to the first connecting terminal (33), and a connecting shaft (22) whose upper end extends out of the outer tube (1) and is used to connect to a rotating component; the rotating shaft (21) and the connecting shaft (22) are both hollow shafts and are circumferentially linked; the outer wall of at least one of the rotating shaft (21) and the connecting shaft (22) is directly or indirectly rotatably matched with the inner wall of the outer tube (1); The rotating shaft (21) is axially positioned and arranged inside the outer tube (1) through a positioning assembly, and the rotating shaft (21) and the connecting shaft (22) are sleeved and realize circumferential positioning linkage; a bottom plate (11) is provided at the bottom of the outer tube (1), and the rotating shaft (21) passes through an axial hole in the center of the bottom plate (11), and the rotating shaft (21) is mounted inside the outer tube (1) through the positioning assembly; the second wiring terminal (34) extends into the cavity of the rotating shaft (21) and docks with the first wiring terminal (33).

2. The rotating shaft with a built-in power cord according to claim 1, characterized in that: The end surface of the first wiring terminal (33) is provided with a wiring post (35) or a wiring groove, and the end surface of the second wiring terminal (34) is provided with a wiring groove (36) or a wiring post; the end surface of the first wiring terminal (33) abuts against the end surface of the second wiring terminal (34), and the wiring post is inserted into the wiring groove to realize power supply.

3. The rotating shaft with a built-in power cord according to claim 2, characterized in that: The terminal is a cylinder with the axis of the axis core assembly as the center, and the terminal slot is a circular slot arranged around the cylinder; the outer side wall of the terminal is in contact with the inner side wall of the terminal slot.

4. The rotating shaft with a built-in power cord according to claim 1, characterized in that: A limiting shaft sleeve (23) is provided inside the outer tube (1), and the connecting shaft (22) is inserted into the limiting shaft sleeve (23). The connecting shaft (22) is rotatably matched with the limiting shaft sleeve (23).

5. The rotating shaft with a built-in power cord according to claim 1, characterized in that: The positioning assembly comprises a pad body sleeved on the rotating shaft (21) above the bottom plate (11), and a screw-fixing component (41) connected to the end of the rotating shaft (21) below the bottom plate (11).

6. The rotating shaft with a built-in power cord according to claim 5, characterized in that: The inner cavity side wall of the rotating shaft (21) includes a positioning end face (24) for axially positioning the first terminal (33) and limiting the upward movement of the first terminal (33); when the first terminal (33) is installed in the inner cavity of the rotating shaft (21), a portion of the outer wall of the first terminal (33) abuts against the positioning end face (24), and the lower end of the first terminal (33) abuts against the screw-fastening component (41).

7. A swivel chair, characterized in that: It comprises a rotating shaft with a built-in power cord as described in any one of claims 1 to 6, wherein the lower end of the outer tube (1) of the rotating shaft is connected to the chair foot, and the upper end of the shaft core assembly of the rotating shaft is directly or indirectly connected to the lower end surface of the seat through a tilt tray.

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