Rotatable display screen device and treadmill

Abstract

This utility model relates to the field of fitness equipment technology, and in particular to a rotatable display screen device and a treadmill. This application provides a rotatable display screen device with the following technical solution: a fixed ring, fixed to the frame, with a limit pin on the fixed ring; a display screen bracket, rotatably mounted on the fixed ring and capable of rotating along its axis, with at least one limit block on the display screen bracket; wherein, the limit pin is located on the rotation path of the limit block, and the limit block contacts the limit pin during rotation, achieving bidirectional rotational limiting. This solution has the advantages of bidirectional rotational limiting with a large adjustment angle, prevention of cable tangling, and improved mechanical durability.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, and in particular to a rotatable display screen device and a treadmill. Background Technology

[0002] Currently, the display screen brackets for fitness equipment such as treadmills mainly adopt two types of solutions: fixed installation or 360° unrestricted rotation. Although fixed brackets are inexpensive, the viewing angle of the display screen is completely unadjustable, and users must move their bodies to adjust the screen position, which can easily obstruct the view, especially when operating from different positions. While 360° rotating brackets provide full circumferential freedom, they have inherent drawbacks: the rotation process lacks physical stop feedback, making it difficult for users to intuitively judge whether the screen has returned to its initial position; more seriously, with repeated unrestricted rotation of the bracket, the internal cables are repeatedly tangled, which can easily lead to wire breakage or loosening of interfaces, creating potential equipment malfunctions.

[0003] In limited-angle adjustment schemes, traditional bidirectional limiting structures mainly rely on symmetrical stops or bolt locking. Due to limitations in the physical thickness and installation position of the stops / bolts, the actual rotatable angle on one side is usually less than 180° (e.g., within ±170°), creating an unadjustable dead zone in the circumference of the support. Furthermore, the limiting components of existing rotating mechanisms often employ rigid impact designs, which are prone to deformation of the limiting pins or wear of the limiting grooves after long-term use, causing the rotation angle to gradually deviate from the preset value. For devices like treadmills that require frequent adjustments to the display angle, existing technology cannot meet the demand for large-angle, blind-spot-free adjustment and lacks reliable mechanical durability.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0005] In order to solve the above problems, the purpose of this utility model is to provide a rotatable display screen device and a treadmill, which has the advantages of bidirectional rotation limit and large adjustment angle, prevention of cable tangling, and improvement of mechanical durability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This application provides a rotatable display screen device, the technical solution of which is as follows: a fixed ring, fixed on the frame, and a limit pin is provided on the fixed ring; a display screen bracket, rotatably mounted on the fixed ring and capable of rotating along its axis, and at least one limit block is provided on the display screen bracket; wherein, the limit pin is located on the rotation path of the limit block, and the limit block contacts the limit pin when rotating, thereby realizing bidirectional rotational limiting.

[0008] Furthermore, this application also proposes that an arc-shaped groove is provided on the fixed ring, and a limiting pin is slidably disposed in the arc-shaped groove; when the limiting block rotates, it contacts and pushes the limiting pin to move beyond the arc-shaped groove, thereby achieving a rotation limit of not less than 180° in both directions.

[0009] Furthermore, this application also proposes that the display screen bracket includes a bracket arm and a chassis disposed at the bottom of the bracket arm.

[0010] Furthermore, this application also proposes that it further includes: a set of clamping plates symmetrically clamped on both sides of the shaft hole of the fixing ring; a connector, located on the upper and lower sides of the clamping plates respectively with the display bracket; and a fastener, which passes through the through hole of the connector and the through holes of the two clamping plates in sequence and is then locked into the screw hole of the display bracket, so that the connector and the clamping plates are jointly fixed to the display bracket.

[0011] Furthermore, this application also proposes that the middle part of the fixing ring protrudes upward to form a convex ring, and the shaft hole is located inside the convex ring; a set of clamping plates are symmetrically clamped on the upper and lower sides of the convex ring, and the lower clamping plate and the connector are located in the annular groove at the bottom of the convex ring.

[0012] Furthermore, this application also proposes that the arc-shaped groove is provided on the fixing ring outside the convex ring; the limiting block is formed by bending the bottom edge of the display bracket downward.

[0013] Furthermore, this application also proposes that the clamping piece is made of POM material.

[0014] Furthermore, this application also proposes to include: a cover assembly covering the outside of the display screen bracket; the cover assembly includes: a decorative cover body fitted onto the outside of the bracket arm of the display screen bracket; a decorative base mounted on the frame, the interior of which forms a receiving groove; wherein, the bottom of the decorative cover body is provided with an annular body, the annular body being rotatably disposed within the receiving groove.

[0015] Furthermore, this application also proposes that the decorative cover includes a first cover and a second cover that are joined together; an annular body is disposed at the lower end of the first cover or the second cover.

[0016] Furthermore, this application also proposes a treadmill, including a column and a panel disposed above the column, the panel being provided with a rotatable display screen device as described above.

[0017] As can be seen from the above, the rotatable display screen device and treadmill provided in this application achieve bidirectional rotational limitation between the fixed ring and the display screen bracket through the cooperation of the limiting pin and the limiting block. The limiting pin can slide along the arc groove to extend the rotation angle to 180°. At the same time, the clamping plate and fastener structure enhance mechanical stability, and have the advantages of large adjustment range, reliable limitation and strong durability. Attached Figure Description

[0018] Figure 1An exploded view of the installation of a rotatable display screen device provided in this application.

[0019] Figure 2 This is a partial cross-sectional schematic diagram of a rotatable display screen device provided in this application. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In existing technologies, the display screen brackets of fitness equipment such as treadmills have long faced a contradiction between viewing angle adjustment and structural reliability. While fixed brackets prevent cable tangling, users must frequently adjust their posture to adapt to the fixed viewing angle, resulting in a poor user experience. 360-degree unrestricted rotating brackets allow for viewing angle adjustment, but the lack of a physical stop point makes returning to center difficult, and cables are prone to tangling and damage after repeated rotations. Traditional two-way limiting structures use symmetrical blocks or bolt locking, but due to limitations in block thickness and installation position, the actual rotation angle is often less than 180 degrees, creating an unadjustable dead zone around the bracket's circumference, failing to meet multi-angle display requirements.

[0026] To address the aforementioned issues, the inventors discovered the need for a limiting structure that provides both clear feedback on the rotation stop point and expands the effective adjustment angle. By analyzing the contact point distribution patterns of traditional limiting structures, they found that using a movable limiting pin that interferes with the rotation path can expand the limiting angle without increasing the structural thickness. Further considering the cable protection requirements during rotation, they proposed symmetrically distributing the limiting contact points on both sides of the rotation path, generating tactile feedback through rigid contact while simultaneously constraining the rotation angle range.

[0027] Example 1:

[0028] like Figure 1 and 2 As shown, this application proposes a rotatable display screen device, including a fixing ring 7 and a display screen bracket 10. The fixing ring 7 is fixed to a frame 9 and is provided with a limiting pin 8, wherein the frame includes, but is not limited to, a treadmill. The display screen bracket 10 is rotatably mounted on the fixing ring 7 and is provided with at least one limiting block 102. The limiting pin 8 is located on the rotation path of the limiting block 102, and the limiting block 102 contacts the limiting pin 8 during rotation to achieve bidirectional rotational limiting.

[0029] The fixed ring 7 is a ring-shaped support structure rigidly connected to the frame. It can be implemented using a combination of metal stamping and bolt fixing, and serves to support the rotational movement of the display bracket 10 and provide a reference for the installation of the limit pin 8. The limit pin 8 is a columnar blocking component set on the fixed ring 7, which can be implemented using threaded fasteners or pins, and serves to form a physical blocking boundary along the rotation path. The display bracket 10 is a rotatable frame supporting the display device, which can be manufactured using injection molding or metal bending processes. Its rotation axis coincides with the center of the fixed ring 7 to ensure motion stability. The limit block 102 is a protruding structure extending from the display bracket 10, which can be implemented by stamping and bending the bracket body or by adding a metal block. It serves to contact the limit pin 8 during rotation to form a motion constraint. Specifically, when the display bracket 10 rotates around the axis of the fixed ring 7, the limit block 102 moves along the ring path. When it rotates to a set angle, the limit block 102 makes rigid contact with the limit pin 8, preventing further rotation and generating tactile feedback. By symmetrically setting two limiting pins 8 or designing a single-pin double-contact structure, travel limitation can be formed in both the forward and reverse rotation directions. During rotation, the cable always maintains a fixed torsion angle within the space formed by the fixing ring 7 and the display bracket 10, avoiding repeated tangling. The contact area between the limiting block 102 and the limiting pin 8 has been optimized to ensure limiting reliability while avoiding wear caused by excessive friction.

[0030] Compared to existing technologies, traditional 360-degree rotating brackets lack physical stop points, making it impossible for users to perceive the return position. This solution, however, uses tactile feedback generated by rigid contact to clearly indicate the rotation endpoint. Compared to traditional bidirectional stop structures, this solution utilizes the adjustable position of the limiting pin 8 along the rotation path to achieve a larger effective rotation angle, eliminating adjustment dead zones in traditional structures. The axial rotational engagement between the fixing ring 7 and the display bracket 10 ensures structural compactness while improving rotational stability. Through the above technical solutions, this application effectively prevents cable entanglement caused by unrestricted rotation of the display bracket 10, and helps users quickly locate the screen's return position through clear tactile feedback. The bidirectional 180-degree rotation limiting design breaks through the angle limitations of traditional structures, eliminates adjustment blind spots, and simplifies the limiting structure, reducing manufacturing costs. The rigid contact limiting mechanism ensures reliability without requiring additional damping components, extending the device's lifespan.

[0031] In such Figure 1 and 2 In the preferred embodiment shown, the fixed ring 7 has an arc-shaped groove 70, and the limiting pin 8 is slidably disposed in the arc-shaped groove 70; when the limiting block 102 rotates, it contacts and pushes the limiting pin 8 to move beyond the arc-shaped groove 70, so as to achieve a rotation limit of not less than 180° in both directions.

[0032] The arc-shaped groove 70 refers to a curved groove structure extending circumferentially along the fixed ring 7. It can be achieved through milling, injection molding, or punching processes, and its curvature range is configured to cover the extreme positions of the rotation path of the display screen bracket 10. This structure provides a controllable sliding trajectory for the limiting pin 8, allowing the rotation endpoint position to be adjusted according to the travel requirements. The sliding setting of the limiting pin 8 refers to a clearance fit between the limiting pin 8 and the arc-shaped groove 70, which can be achieved using a combination of a pin with a self-lubricating coating and a groove wall with a low coefficient of friction. This design allows the limiting pin 8 to displace along the arc-shaped groove 70 when subjected to external forces, dispersing impact energy through sliding friction instead of rigid collision.

[0033] Specifically, when the display bracket 10 rotates unidirectionally (e.g., left or right) to a preset angle, the limiting block 102 on the edge of its chassis 101 contacts the limiting pin 8. As the rotation continues, the limiting block 102 pushes the limiting pin 8 to slide along the arc-shaped groove 70 in the direction of rotation. During this process, the sliding displacement of the limiting pin 8 forms an additional buffer stroke, causing the actual rotation angle of the display bracket 10 to exceed or equal to the nominal limiting angle of 180°. When the limiting pin 8 slides to the end of the arc-shaped groove 70, its rigid contact with the groove wall produces a clear tactile feedback, at which point the display bracket 10 reaches its maximum rotation angle. By adjusting the arc length of the arc-shaped groove 70, the amplitude of the overtravel can be precisely controlled, thereby balancing the rotational freedom and the mechanical impact protection requirements.

[0034] This solution utilizes a sliding limiting pin 8 in conjunction with an arc-shaped groove 70. This allows the limiting pin 8 to displace when pushed, overcoming the rotation angle limitations of the physical stop and achieving a bidirectional rotation range of ±180°, accumulating to a total 360° full circumferential adjustment, thus eliminating dead angles in rotation adjustment. Simultaneously, the sliding process of the limiting pin 8 converts instantaneous impact force into continuous friction force, preventing component deformation caused by rigid collisions. Through this technical solution, when the display bracket 10 rotates to its limit position, the sliding of the limiting pin 8 along the arc-shaped groove 70 creates a buffer stroke, eliminating the rotation dead angles caused by traditional fixed stops and reducing the impact force at the rotation endpoint to a tolerable range. This design allows users to achieve 180° unidirectional and 360° bidirectional blind-spot-free adjustment, while extending the service life of the limiting components through the sliding friction mechanism.

[0035] like Figure 1As shown, the display screen bracket 10 includes a bracket arm 100 and a base 101 disposed at the bottom of the bracket arm 100. The bracket arm 100 is a support structure that supports the display screen and extends to the rotation axis. It can be made of metal tubing or injection-molded parts, and its axial height design allows the display screen to be detached from the frame. The base 101 is a plate-shaped component fixed to the bottom of the bracket arm 100. It can be made of stamped steel plate or engineering plastic parts, increasing the contact area to improve the overall stability of the bracket and providing an installation base for the limiting block 102. Specifically, the bracket arm 100, as the main support structure, forms a separate layout with the base 101. The bracket arm 100 extends to the rotation axis, and the base 101 is rotatably connected with the clamping plate 6 and the connecting piece 5. The base 101 forms the limiting block 102 by bending its edges downwards, which directly contacts the limiting pin 8 on the fixing ring 7 to complete the rotational limiting. This structure allows the support arm 100 to focus on supporting the display screen and adjusting its height, while the chassis 101 focuses on providing limiting functions and supporting stability. The two are connected by welding or bolts to form a whole, avoiding the rotation and swaying problems caused by the single structure of traditional integrated supports.

[0036] like Figure 1 and 2As shown, the rotatable display screen device includes a set of clamping plates 6, symmetrically clamped on both sides of the shaft hole 71 of the fixing ring 7; the connecting piece 5 and the display screen bracket 10 are located on the upper and lower sides of the clamping plates 6, respectively; the fastener 4 passes through the through hole of the connecting piece 5 and the through holes of the two clamping plates 6 in sequence and is then locked into the screw hole of the display screen bracket 10, so that the connecting piece 5 and the clamping plates 6 are jointly fixed to the display screen bracket 10. The clamping plate 6 is a plate-shaped component with through holes, which can be made of metal or polymer material. Its symmetrical arrangement on both sides of the shaft hole 71 forms a bidirectional clamping force to eliminate radial clearance generated during rotation. The connecting piece 5 is a transition structure with through holes, which can be an annular gasket or flange. It shares the rotational torque with the clamping plate 6 and disperses shear stress. The fastener 4 is a threaded mechanical connector, which can be a bolt or screw. It passes through the multi-layer structure and is locked to the display screen bracket 10, forming an axial clamping force to fix the relative position of the clamping plate 6 and the connecting piece 5. Specifically, the clamping plates 6 are symmetrically distributed on both sides of the shaft hole 71 of the fixing ring 7. Connectors 5 and the display screen bracket 10 are respectively installed on the upper and lower sides, forming a layout where the clamping plates 6 are bidirectionally pressed. When the fastener 4 passes through the through holes of the connector 5 and the clamping plates 6 and locks into the display screen bracket 10, the clamping plates 6 are axially compressed, generating elastic deformation, thus tightly fitting the surface of the fixing ring 7. During rotation, the frictional force between the clamping plates 6 and the fixing ring 7 is balanced by the symmetrically distributed clamping force, preventing loosening caused by unilateral wear. The superimposed structure of the connector 5 and the clamping plates 6 forms a multi-level stress transmission path, dispersing the rotational torque to a larger contact area and reducing local stress concentration. The elastic deformation of the clamping plates 6 can also compensate for assembly gaps caused by machining errors, suppressing wobbling caused by the accumulation of gaps during rotation. Through the above technical solution, this application solves the problem of loosening caused by rotation in the connection structure between the display bracket 10 and the fixing ring 7. The symmetrical clamping and multi-layer pressing structure suppress skew wear and improve rotational stability. At the same time, the elastic clamping compensates for the assembly gap, reduces shaking and abnormal noise, and extends the service life of the device.

[0037] In a specific implementation, the fixing ring 7 protrudes upward from the center to form a convex ring 72, and the shaft hole 71 is located inside the convex ring 72. A set of clamping pieces 6 are symmetrically clamped on the upper and lower sides of the convex ring 72, and the lower clamping piece 6 and the connecting piece 5 are located in the annular groove at the bottom of the convex ring 72. The convex ring 72 refers to the annular protrusion structure extending upward from the center of the fixing ring 7, which can be achieved by stamping, and is used to concentrate the force on the shaft hole 71 area and form the positioning reference for the clamping pieces 6. The annular groove refers to the circumferentially extending groove structure at the bottom of the convex ring 72, which can be achieved by turning, and is used to constrain the radial displacement of the lower clamping piece 6 and the connecting piece 5 and conceal their installation position. Specifically, the axial extension structure of the convex ring 72 forms a thickened support section in the shaft hole 71 area, and when the clamping pieces 6 are symmetrically distributed on the upper and lower sides of the convex ring 72, the clamping force is evenly transmitted to both axial ends of the convex ring 72. After the lower clamping piece 6 and the connector 5 are embedded in the annular groove, the sidewall of the annular groove can prevent the clamping piece 6 from shifting laterally during rotation. At the same time, the depth design of the annular groove allows the clamping piece 6 to be completely sunk into the fixed ring 7, avoiding structural interference caused by the clamping piece 6 being exposed. The cooperation between the convex ring 72 and the annular groove restricts the installation position of the clamping piece 6 assembly to within the axial space inside the fixed ring 7, eliminating the adjustment dead angle caused by the clamping piece 6 exceeding the outer diameter of the ring body in traditional installation methods.

[0038] Furthermore, the arc-shaped groove 70 is disposed on the fixing ring 7 outside the convex ring 72, and the limiting block 102 is formed by bending the edge of the chassis 101 of the display screen bracket 10 downward. This arrangement allows the sliding path of the limiting pin 8 to avoid the solid area of ​​the convex ring 72, thus avoiding structural interference. The limiting block 102 refers to a vertical baffle formed by stamping and bending a metal sheet. Specifically, it can be achieved by bending the edge of the chassis 101 downward by 90 degrees, with the bent plane perpendicular to the movement trajectory of the limiting pin 8. This structure directly utilizes the edge of the chassis 101 as the limiting trigger surface, eliminating the need for an additional independent baffle. Specifically, when the display screen bracket 10 rotates around the fixing ring 7, the bent limiting block 102 rotates synchronously with the chassis 101. The limiting pin 8 slides within the arc-shaped groove 70 outside the convex ring 72, and its movement trajectory is not spatially restricted by the solid structure of the convex ring 72. When the display bracket 10 rotates to approximately 180 degrees, the vertical side of the limiting block 102 makes planar contact with the limiting pin 8, continuing to push the limiting pin 8 to slide along the arc-shaped groove 70 until it abuts against the other side wall of the arc-shaped groove 70, thereby stopping the rotation. The external layout of the arc-shaped groove 70 extends the sliding stroke of the limiting pin 8 to the outer circumference of the convex ring 72, eliminating the limitation on the sliding distance by the inner wall of the convex ring 72 in the traditional solution.

[0039] The clamping piece 6 is made of POM material. POM refers to polyoxymethylene, which can be manufactured using injection molding. Its molecular chain structure has high crystallinity and a low coefficient of friction. During rotation, this material reduces the sliding resistance between the clamping piece 6 and the fixing ring 7 through its self-lubricating properties. Specifically, during the rotation of the display bracket 10, the clamping piece 6 and the convex ring 72 of the fixing ring 7 slide relative to each other. Due to the self-lubricating properties of POM, the lubricating layer formed on its surface reduces sliding friction, avoiding surface wear caused by friction in traditional metals or ordinary plastics. At the same time, the high wear resistance of POM allows it to maintain surface flatness even after long-term repeated rotation, preventing the clamping piece 6 from loosening due to gaps caused by wear. In addition, the elastic modulus of POM allows it to produce a small amount of elastic deformation when the limiting block 102 contacts the limiting pin 8, absorbing rotational impact energy and avoiding noise generated by rigid collisions.

[0040] like Figure 1 and 2As shown, the solution also includes a cover assembly 3, which covers the outside of the display screen bracket 10. The cover assembly 3 includes: a decorative cover body, which is fitted onto the outside of the bracket arm 100 of the display screen bracket 10; and a decorative base 34, which is mounted on the frame and has an internal receiving groove 35. The decorative cover body has a circular ring 33 at its bottom, which is rotatably positioned within the receiving groove 35. The decorative cover body refers to the shell structure that wraps around the bracket arm 100, and can be made of a split plastic shell, used to cover internal cables and mechanical connecting parts. The decorative base 34 is a base component fixed to the frame, and can be manufactured using injection molding. Its internal receiving groove 35 is an annular groove structure used to support the circular ring 33 and limit its radial displacement. The circular ring 33 is an annular protrusion located at the bottom of the decorative cover body, which can be formed by injection molding or metal insert injection molding, and is used to cooperate with the receiving groove 35 to form a rotational support structure. Specifically, the decorative cover completely encloses the support arm 100 of the display screen bracket 10, preventing internal cables and fastening structures from being exposed and avoiding entanglement or breakage of cables due to contact with external objects during rotation. The decorative base 34 is fixed to the frame with bolts. The depth of the receiving groove 35 matches the height of the annular body 33. After the annular body 33 is embedded in the receiving groove 35, it can rotate freely within the groove. At the same time, the groove wall provides radial constraint to the annular body 33, preventing lateral displacement of the display screen bracket 10 during rotation. The contact surface between the annular body 33 and the receiving groove 35 is made of a low-friction coefficient material, such as a nylon ring fitted around the outer circumference of the annular body 33, to reduce rotational resistance and wear. Through the above technical solution, this application achieves full cable shielding during the rotation of the display screen, eliminating the risk of entanglement caused by exposed cables; the combination of the decorative cover and the base forms a complete appearance coverage, improving the overall aesthetics of the equipment; the constraint relationship between the annular body 33 and the receiving groove 35 enhances the radial stability of the rotating mechanism, preventing the display screen from shaking during frequent rotation.

[0041] Furthermore, the decorative cover includes a first cover 31 and a second cover 32 that are joined together, with an annular body 33 disposed at the lower end of either the first cover 31 or the second cover 32. The decorative cover refers to the shell structure covering the outside of the display screen bracket 10, which can be implemented using a split-type splicing structure. The first cover 31 and the second cover 32 are joined together to form a complete cover, reducing the overall assembly complexity. The annular body 33 refers to a ring-shaped component disposed at the bottom of the cover, which can be integrally injection molded with the cover. By fixing the annular body 33 to the lower end of a single cover, the contact surface remains continuous during rotation, avoiding stress concentration that could lead to deformation. Specifically, the first cover 31 and the second cover 32 are joined together using snaps or screws to form a closed structure enclosing the bracket arm 100. The annular body 33 is only disposed at the lower edge of one of the covers. When the decorative cover is installed into the receiving groove 35 of the decorative base 34, the annular body 33 is embedded in the groove and forms a rotational fit with the groove wall. The split-type housing design allows for the separate installation of the first housing 31 and the second housing 32 during assembly, avoiding installation interference problems caused by excessive housing size. The fixing method of the annular body 33 to the single housing ensures that rotational stress is distributed along the joint of the split housing, preventing the annular body 33 from detaching or breaking due to excessive local stress.

[0042] Example 2:

[0043] like Figure 1 As shown, this embodiment proposes a treadmill, including a frame 9. The frame 9 includes a column 92 and a panel 91 disposed above the column 92. The panel 91 is equipped with the rotatable display screen device described in Embodiment 1. The column 92 is a vertical structural member supporting the panel 91, which can be formed by welding metal tubing and is used to bear the load of the panel 91 and the display screen device. The panel 91 is an operating platform installed on top of the column 92, which can be a composite structure of injection-molded shell and metal frame, serving as the mounting base for the display screen device. The rotatable display screen device is a mechanical assembly including a fixing ring 7, a limiting pin 8, and a display screen bracket 10, which can be assembled by combining injection-molded parts and metal stamping parts to achieve rotational adjustment of the display screen within a limited angle range.

[0044] Specifically, the column 92 and the panel 91 form the operating interface support structure of the treadmill, and the rotatable display screen device is fixedly connected to the panel 91 via the fixing ring 7. The display screen bracket 10 rotates along the axis of the fixing ring 7, and the contact between the limiting pin 8 and the limiting block 102 forms a physical stop, constraining the rotation angle within a bidirectional 180°, or 360° range. Through the above technical solution, this application solves the problem of the non-adjustable viewing angle caused by the fixed installation of the display screen. The mechanical limiting structure prevents the cable from breaking due to excessive twisting, and the limiting pin 8 is movably set within the arc-shaped groove 70, thereby achieving bidirectional 180°, or 360° omnidirectional rotation and avoiding the occurrence of adjustment dead angles.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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 present 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.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A rotatable display screen device, characterized by include: - A retaining ring (7) is fixed to the frame (9), and a limiting pin (8) is provided on the retaining ring (7); - Display screen bracket (10), rotatably mounted on the fixed ring (7) and capable of rotating along its axis, the display screen bracket (10) is provided with at least one limiting block (102). The limiting pin (8) is located on the rotation path of the limiting block (102), and the limiting block (102) contacts the limiting pin (8) when rotating, thereby achieving bidirectional rotational limiting.

2. The rotatable display screen device according to claim 1, characterized in that: The fixing ring (7) has an arc-shaped groove (70), and the limiting pin (8) is slidably disposed in the arc-shaped groove (70); When the limiting block (102) rotates, it contacts and pushes the limiting pin (8) to move beyond its travel along the arc groove (70), thereby achieving a bidirectional rotation limit of not less than 180°.

3. The rotatable display screen device according to claim 1 or 2, characterized in that: The display screen bracket (10) includes a bracket arm (100) and a chassis (101) disposed at the bottom of the bracket arm (100).

4. The rotatable display screen device according to claim 2, characterized in that, Also includes: - A set of clamping plates (6) are symmetrically clamped on both sides of the shaft hole (71) of the fixing ring (7); - The connector (5) and the display bracket (10) are located on the upper and lower sides of the clamping piece (6), respectively; - The fastener (4) passes through the through hole of the connector (5) and the through holes of the two clamping pieces (6) in sequence and is then locked into the screw hole of the display bracket (10) so that the connector (5) and the clamping pieces (6) are fixed together to the display bracket (10).

5. The rotatable display screen device according to claim 4, characterized in that: The fixing ring (7) protrudes upward in the middle to form a convex ring (72), and the shaft hole (71) is located inside the convex ring (72); The set of clamping pieces (6) are symmetrically clamped on the upper and lower sides of the convex ring (72), and the lower clamping piece (6) and the connector (5) are located in the annular groove at the bottom of the convex ring (72).

6. The rotatable display screen device according to claim 5, characterized in that: The arc-shaped groove (70) is provided on the fixing ring (7) on the outside of the convex ring (72); The limiting block (102) is formed by bending the edge of the chassis (101) of the display screen bracket (10) downwards.

7. The rotatable display screen device according to claim 4, characterized in that: The clamping piece (6) is made of POM material.

8. The rotatable display screen device according to claim 1, characterized in that, Also includes: Cover assembly (3) covers the outside of the display bracket (10); The cover assembly (3) includes: - A decorative cover, fitted onto the outside of the support arm (100) of the display screen bracket (10); - A decorative base (34) is mounted on the frame and has a receiving groove (35) formed inside it; The decorative cover has a ring (33) at the bottom, which is rotatably disposed in the receiving groove (35).

9. The rotatable display screen device according to claim 8, characterized in that: The decorative cover includes a first cover (31) and a second cover (32) that are joined together. The annular body (33) is disposed at the lower end of the first cover (31) or the second cover (32).

10. A treadmill, comprising a frame (9), the frame (9) including a column (92) and a panel (91) disposed above the column (92), characterized in that: The panel (91) is provided with a rotatable display screen device as described in any one of claims 1-9.

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