A display structure for angle adjustment on a treadmill

Abstract

The utility model relates to the technical field of body -building equipment especially runs the angle adjusting display structure on treadmill, including base frame, the frame for the arrangement racecourse and the lateral casing fixed in the both sides of frame. The frame front end is pivoted on the base frame, and the rear end is connected with the base frame through the positioning adjusting mechanism, the lateral surface of base frame is fixed with the gear pointer, and the lateral wall of lateral casing is equipped with the strip -shaped through -hole or strip -shaped transparent hole corresponding with gear pointer, and the strip -shaped through -hole or strip -shaped transparent hole side is equipped with gear mark. When the frame adjusts the height through the positioning adjusting mechanism, the lateral casing moves with the frame, makes the gear pointer aim at corresponding gear mark. This scheme has the advantages such as operation intuitionistic, need not power support, and the higher advantages such as adjustment precision.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, and in particular to an angle adjustment display structure for a treadmill. Background Technology

[0002] With the continuous upgrading of treadmill functions, angle adjustment has become a core feature for simulating incline training. However, existing treadmill angle adjustment level display solutions have significant drawbacks:

[0003] Most products integrate gear indicators onto the front control panel, such as a console screen or physical dial, while the angle adjustment mechanism is usually located at the rear of the frame. This design means that when users bend over to operate the rear adjustment mechanism, their line of sight cannot simultaneously observe the gear changes on the front control panel, requiring them to repeatedly stand up to confirm. This not only makes the operation process cumbersome but also creates a serious disconnect in the user experience.

[0004] In addition, although some high-end models use electronic angle sensors to provide real-time feedback of the tilt angle through the display screen, such solutions are entirely dependent on the power supply of the device and will completely fail when the power is off or the circuit fails. Furthermore, the visibility of the display screen is significantly reduced in outdoor or bright light environments.

[0005] Finally, the introduction of electronic sensors increases manufacturing costs and the risk of failure, hindering product adoption. Traditional mechanical adjustment mechanisms, such as pin positioning, while not requiring electricity, generally lack physical indication structures linked to the adjustment action. Users can only subjectively judge the tilt level by the height of the frame, which can easily lead to confusion between multiple levels or incorrect adjustments, seriously affecting training accuracy and safety.

[0006] Based on the above problems, there is an urgent need for a gear position indication scheme that is directly coupled to the mechanical adjustment mechanism, so as to provide a visually intuitive gear position feedback that does not require electricity when the user operates the adjustment mechanism, thereby improving adjustment efficiency and safety. Summary of the Invention

[0007] To address the aforementioned issues, the present invention aims to provide an angle adjustment display structure for a treadmill, which offers advantages such as intuitive operation, no need for power support, and high adjustment precision.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] This application provides an angle adjustment display structure for a treadmill, the technical solution of which is as follows: It includes a base frame, a frame for arranging the running track, and side shells fixed to both sides of the frame. The front end of the frame is pivotally connected to the base frame, and the rear end is connected to the base frame via a positioning adjustment mechanism. A gear indicator is fixedly attached to the side of the base frame. The side wall of the side shell has a strip-shaped through hole or strip-shaped transparent hole corresponding to the gear indicator, and a gear mark is provided next to the strip-shaped through hole or strip-shaped transparent hole. When the height of the frame is adjusted by the positioning adjustment mechanism, the side shell moves with the frame, causing the gear indicator to align with the corresponding gear mark. This technical solution achieves synchronous indication function through the following combination of features: the pivotal structure between the base frame and the frame provides the basis for angle adjustment; the positioning adjustment mechanism controls the change in frame height, thereby adjusting the tilt angle of the running belt; the gear indicator fixed to the side of the base frame serves as a static reference; and the strip-shaped through hole / transparent hole on the side shell and the gear mark form a dynamic display window. When the frame height changes, the side housing moves the display window relative to the gear position pointer, ensuring the pointer points to the current gear indicator in real time, thus unifying the adjustment operation position with visual feedback. This mechanical linkage structure requires no electrical support, directly converting gear information through physical displacement. Furthermore, its location on the side of the frame near the positioning and adjustment mechanism solves the problems of reliance on electronic displays and the lack of mechanical indication.

[0010] Furthermore, this application also proposes that the gear position pointer is fixed to the outer wall of the positioning seat, and a plate is fixed to the outer side of the gear position pointer, with the pointer tip protruding through the through hole of the plate.

[0011] Furthermore, this application proposes that the base frame is connected to both sides of the frame via pneumatic struts. Pneumatic struts are installed between the base frame and both sides of the frame as connecting components. The function of the pneumatic struts is to provide a retractable and cushioned connection, enabling smooth movement during frame height adjustment. Simultaneously, the rigid support characteristics of the pneumatic struts ensure the stability of the connection between the frame and the base frame, making frame adjustment, especially raising the frame angle, more effortless. This solution replaces the traditional fixed connection method with a mechanical connection using pneumatic struts, making the frame angle adjustment process smoother and reducing mechanical impact during adjustment.

[0012] Furthermore, this application also proposes that the positioning adjustment mechanism includes a positioning seat on the base frame, a locking pin assembly on the frame, and an operating component. The positioning seat is provided with at least two positioning slots of different heights, and the operating component controls the output end of the locking pin assembly to engage or disengage from the positioning slots to adjust the frame height.

[0013] Furthermore, this application also proposes that the base frame is provided with positioning seats on both sides of the rear end, and the vehicle frame is provided with locking pin assemblies on both sides of the rear end. The operating component is an operating lever, with its two ends connected to the locking pin assemblies on both sides respectively.

[0014] Furthermore, this application proposes that the frame has an auxiliary grip bar fixed to the rear side of the operating lever. In this design, the frame serves as the main support structure, the operating lever controls the linkage mechanism of the locking pin assembly, and the auxiliary grip bar is fixed to the frame behind the operating lever. The auxiliary grip bar provides the user with an additional gripping point, offering a gripping point on the frame when operating the angle adjustment mechanism, thus avoiding insufficient strength or postural imbalance caused by single-handed operation. This design improves operational stability through physical fixation, without relying on electricity or complex structures.

[0015] Furthermore, this application also proposes that the positioning seat includes two parallel positioning side plates, each with a corresponding positioning slot. The locking pin assembly is located between the two positioning side plates, and its output ends on both sides can be engaged with the positioning slots.

[0016] Furthermore, this application proposes that the positioning side plate is provided with multiple positioning slots of different heights, and adjacent positioning slots are connected by a sliding groove. The locking pin assembly includes a locking pin frame connected to the vehicle frame, a central pin rod axially movable on the locking pin frame, and a limiting crossbar inserted and fixed to the inner end of the central pin rod. The operating component is connected to the central pin rod to drive its axial movement. The limiting crossbar and / or the central pin rod are provided with elastic components. The limiting crossbar can move along the sliding groove and be spring-loaded into the positioning slot by the elastic force of the elastic component. In this scheme, the positioning side plate is provided with positioning slots and sliding grooves of multiple heights to achieve continuous adjustment of gear and provide a physical positioning reference; the locking pin frame is rigidly connected to the vehicle frame to ensure the transmission of adjustment force; the axial movement of the central pin rod drives the displacement of the limiting crossbar to achieve mechanical linkage; the elastic component enables the limiting crossbar to have an automatic reset function of being locked into the positioning slot, forming tactile feedback; the matching design of the sliding groove and the positioning slot allows the limiting crossbar to smoothly transition during the adjustment process, and finally achieves precise gear locking through elastic positioning. This solution achieves real-time synchronization between adjustment operation and gear display through a purely mechanical structure, requiring no power support and boasting high reliability.

[0017] Furthermore, this application also proposes that the locking pin frame includes an outer sleeve and a limiting sleeve fixed inside the outer sleeve. The central pin rod passes through the limiting sleeve, and its outer end passes through the limiting sleeve and connects to the operating component.

[0018] Furthermore, this application also proposes that the elastic component is a tension spring, with one end of the tension spring connected to a locking pin frame and the other end connected to a limiting crossbar.

[0019] As can be seen from the above, the treadmill angle adjustment display structure and its adjustment mechanism provided in this application realize the automatic alignment of the gear pointer and the gear mark through a mechanical linkage structure. The current gear can be displayed intuitively during the adjustment process, which solves the problem of traditional treadmills requiring repeated standing up to confirm the gear. It has the advantages of intuitive operation, no power support required, and high adjustment accuracy. Attached Figure Description

[0020] Figure 1 This application provides a schematic diagram of a treadmill with an angle-adjustable display structure.

[0021] Figure 2 for Figure 1 Enlarged view of part A.

[0022] Figure 3 This is a three-dimensional schematic diagram of an angle adjustment display structure for a treadmill provided in this application.

[0023] Figure 4 This is a side view of an angle adjustment display structure for a treadmill provided in this application.

[0024] Figure 5 The present application provides a partial schematic diagram of the angle-adjustable display structure.

[0025] Figure 6 An exploded view of an angle adjustment display structure for a treadmill provided in this application. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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 technical features indicated. 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.

[0029] In this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" are used interchangeably.

[0030] The terms "connection" and "extension" 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, or a connection within 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.

[0031] 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.

[0032] like Figure 1-6 As shown, this embodiment relates to an angle adjustment display structure for a treadmill, including a base frame 2, a frame 1 for arranging the running track, and side housings 11 fixed to both sides of the frame 1. The front end of the frame 1 is pivotally connected to the base frame 2, and the rear end is connected to the base frame 2 through a positioning adjustment mechanism. A gear position pointer 7 is fixedly connected to the side of the base frame 2. The side wall of the side housing 11 is provided with a strip-shaped through hole 9 or a strip-shaped transparent hole 9 corresponding to the gear position pointer 7, and a gear position mark 8 is provided next to the strip-shaped through hole 9 or the strip-shaped transparent hole 9. When the height of the frame 1 is adjusted by the positioning adjustment mechanism, the side housing 11 moves with the frame 1, so that the gear position pointer 7 is aligned with the corresponding gear position mark 8. The strip-shaped through hole 9 or the strip-shaped transparent hole 9 can be implemented in the following ways: the strip-shaped through hole 9 is a straight opening that penetrates the wall thickness of the side housing 11, and its length direction is parallel to the lifting trajectory of the frame 1. The strip-shaped transparent hole 9 is a transparent window made of acrylic or glass material embedded in the side housing 11, with a light-shielding coating printed on the surface and retaining a transparent indicator area. The gear position indicator 8 is set on the edge of the strip hole by silkscreen printing, etching, or adhesive labeling, and the indicator content includes numerical scale or slope percentage. The gear position pointer 7 is fixed in one of the following ways: directly bolted to the side plate of the base frame 2, or welded to an independent mounting base and then fixed as a whole to the base frame 2. The pointer can be made of metal or plastic, and its tip can be coated with fluorescent material to enhance nighttime visibility. The clearance between the pointer and the strip hole is controlled within the range of 1-3mm to avoid movement interference.

[0033] This technical solution achieves synchronization between operation and display through a mechanical linkage principle: when the operating positioning adjustment mechanism changes the tilt angle of the frame 1, the side housing 11 moves along an arc trajectory with the frame 1, causing the strip hole and gear position indicator 8 to shift relative to the fixed pointer 7. Since the pointer 7 always points to the current gear position indicator 8, the user can directly read the gear information without moving the observation position when operating the adjustment mechanism. Compared with existing technologies, this structure has the following advantages: the physical indicator is not affected by the power supply and can still work normally in the event of a power outage. The display area is adjacent to the adjustment operation position, which conforms to ergonomic principles. The purely mechanical structure has high reliability and lower maintenance costs than electronic sensor solutions.

[0034] In a specific implementation, the gear position pointer 7 is fixed to the outer wall of the positioning seat 4, and a flat plate 70 is fixed to the outer side of the gear position pointer 7, with the pointer tip protruding through a through hole in the flat plate 70. The flat plate 70 can be made of stamped metal or injection molded metal, and the diameter of the through hole is slightly larger than the cross-sectional size of the pointer tip to achieve interference-free sliding. As a preferred embodiment, the flat plate 70 and...

[0035] The positioning seat 4 or the gear pointer 7 is fixed by bolts or welding to ensure structural rigidity. Furthermore, the pointer tip can be tapered or flat, and the corresponding through hole can be machined into a circle or rectangle, with the clearance between the two controlled within the range of 0.1-0.5mm. Specifically, the plate 70 can be made of stainless steel to balance strength and corrosion resistance, and its surface can be frosted to reduce glare. This technical solution achieves stable fixation of the gear pointer 7 during height adjustment through a mechanical linkage structure. The outer wall of the positioning seat 4 ensures that the pointer 7 moves synchronously with the adjustment mechanism, the plate 70 structure provides a stable support plane for the pointer 7, and the pointer tip passes through the through hole to achieve precise alignment display. Compared with existing technologies, this solution has the following advantages: The through hole of the plate 70 constrains the movement trajectory of the pointer 7, eliminating the wobbling problem of traditional free-hanging pointers. The precise fit between the pointer tip and the through hole prevents jamming caused by dust accumulation. The plate 70 structure also acts as a protective cover to prevent deformation of the pointer 7 caused by external objects colliding with it. Thus, stable visibility of the gear position indicator and intuitive operation are achieved during the adjustment process without the need for power support.

[0036] like Figure 3 and 4As shown in Figure 6, the base frame 2 is connected to both sides of the frame 1 via pneumatic rods 10. The pneumatic rod 10, as a retractable mechanical connection component, is filled with compressed gas and achieves telescopic movement through pressure changes. Both ends of the pneumatic rod 10 are fixed to corresponding connection points on the base frame 2 and the frame 1 via hinges, where the hinge structure can employ ball joints or bushings to achieve multi-directional movement. In a preferred embodiment, the cylinder end of the pneumatic rod 10 is fixed to the side of the base frame 2, and the piston rod end is connected to the side housing 11 of the frame 1. Thus, during the angle adjustment of the frame 1, the pneumatic rod 10 telescopically extends and retracts synchronously with the movement of the frame 1. Furthermore, the stroke design of the pneumatic rod 10 needs to match the maximum lifting height of the frame 1, and a buffer valve can be installed inside to control the telescopic speed. In addition, the rigid support force of the pneumatic rod 10 needs to be calculated based on the load of the frame 1 to ensure that the angle of the frame 1 can be stably maintained in a static state. This technical solution solves the technical problem of the connection method between the frame 1 and the base frame 2 through the mechanical characteristics of the pneumatic rod 10. Because the pneumatic strut 10 possesses both telescopic freedom and rigid support capabilities, its telescopic nature makes the adjustment process smoother during frame 1 angle adjustment, avoiding mechanical jamming caused by traditional fixed connections. The pneumatic strut 10's cushioning function reduces impact vibration during adjustment and distributes most of the frame 1's weight, making adjustment easier for the user. Furthermore, the rigid support characteristics of the pneumatic strut 10 effectively maintain connection stability and prevent angle shift when the frame 1 is stationary. Compared to the pin or bolt fixing methods used in existing technologies, this solution eliminates the need for repeated disassembly and reassembly of fasteners, significantly reducing operational complexity, while achieving effortless adjustment through a physical mechanical structure.

[0037] like Figure 5 and 6 As shown, the positioning adjustment mechanism includes a positioning seat 4 on the base frame 2, a locking pin assembly 3 on the frame 1, and an operating component 5. The positioning seat 4 has at least two positioning slots 41 at different heights. The operating component 5 controls the output end of the locking pin assembly 3 to engage or disengage from the positioning slots 41 to adjust the height of the frame 1. Specifically, the positioning seat 4 can be fixed to the rear end of the base frame 2 by welding or bolting. This technical solution achieves height adjustment through the principle of mechanical interlock: when the operating component 5 is operated, the locking pin is horizontally disengaged from the current slot 41 through transmission, and the frame 1 moves freely under the action of gravity. When the frame 1 moves to the target height, the locking pin automatically engages with the corresponding slot 41 under the action of the spring, forming a rigid limit.

[0038] Furthermore, positioning seats 4 are provided on both sides of the rear end of the base frame 2, and locking pin assemblies 3 are provided on both sides of the rear end of the frame 1 for operation.

[0039] Component 5 is an operating lever, with its two ends connected to the locking pin assemblies 3 on both sides. This technical solution, through the symmetrically arranged positioning seats 4 and locking pin assemblies 3 on both sides, and the operating lever 5 connected to the locking pin assemblies 3 on both sides, realizes the function of single-handed operation and synchronous control of the dual-sided locking mechanism. Specifically, when the user moves the operating lever 5, the central pins 32 of the locking pin assemblies 3 on both sides move axially synchronously, causing the limit crossbar 30 to disengage from or engage with the positioning slot 41 of the positioning seat 4, thereby completing the adjustment of the frame 1 height. Since the adjustment operation and the gear display mechanism are located in the same spatial position, the user can observe the gear change synchronously without moving their line of sight during operation, effectively solving the cumbersome problem caused by the separation of operation and display in traditional solutions. In addition, the dual-sided synchronous locking design avoids the wear or jamming of the mechanism caused by uneven force on one side, improving the stability and reliability of the adjustment process.

[0040] Furthermore, an auxiliary grip bar 6 is fixed to the rear side of the operating lever 5 on the frame 1. The auxiliary grip bar 6 is fixed to the rear end of the frame 1 by welding or bolting. Its material can be a metal tube or a composite material tube covered with anti-slip rubber, and its diameter needs to be suitable for an adult's hand grip. Specifically, the auxiliary grip bar 6 is a rigid support component independent of the operating lever 5. When the user operates the locking pin assembly 3 with one hand, the other hand can hold the auxiliary grip bar 6 to form a three-point force structure. Through the rigid connection between the frame 1 and the auxiliary grip bar 6, the operating force is directly transmitted to the main body of the frame 1, avoiding torque imbalance caused by unilateral force application. Therefore, during the adjustment process, the user does not need to bend over to find an additional support point. The surface of the auxiliary grip bar 6 can be equipped with anti-slip textures or a silicone sleeve to maintain a sufficient coefficient of friction even when the palms are sweaty. In this regard, this technical solution effectively solves the problem of postural imbalance caused by the lack of stable support when adjusting the angle of traditional treadmills by adding a physical grip fulcrum. Compared with existing technologies, the auxiliary grip 6 does not require changes to the mechanical structure of the original locking pin assembly 3, and can achieve a significant improvement in operational stability simply by adding a simple rod.

[0041] like Figure 6In the specific embodiment shown, the positioning base 4 includes two parallel positioning side plates 40, each with a corresponding positioning slot 41. The locking pin assembly 3 is positioned between the two positioning side plates 40, with its output ends on both sides capable of engaging with the positioning slots 41. The spacing between the parallel positioning side plates 40 can be adjusted according to the dimensions of the locking pin assembly 3 to ensure guiding accuracy. The extension length of the output ends on both sides of the locking pin assembly 3 must be 1-3 mm greater than the thickness of the positioning side plates 40 to ensure complete engagement. As a preferred embodiment, the positioning side plates 40 can be made of stamped steel plates with rust-proof treatment. The output ends of the locking pin assembly 3 can be configured as cylindrical pins or rectangular protrusions, matching the shape of the positioning slots 41. Furthermore, transverse reinforcing ribs can be added between the positioning side plates 40 to improve structural rigidity. This embodiment uses the mechanical guide channel formed by the double positioning side plates 40 to constrain the locking pin assembly 3 to move along a predetermined trajectory, eliminating lateral offset during movement. The symmetrical arrangement of the positioning slots 41 ensures that both sides of the locking pin assembly 3 are simultaneously stressed, avoiding structural deformation caused by unilateral engagement. Specifically, when the operating component 5 drives the locking pin assembly 3 to move, the two positioning side plates 40 simultaneously apply a guiding force to the output end, ensuring that it is accurately aligned with the center position of the positioning slot 41. The resulting symmetrical locking structure significantly improves the smoothness of the adjustment process while reducing wear on parts.

[0042] Furthermore, the positioning side plate 40 is provided with multiple positioning slots 41 of different heights, and adjacent positioning slots 41 are connected by sliding grooves 42. The locking pin assembly 3 includes a locking pin frame 31 connected to the frame 1, a central pin 32 axially movable on the locking pin frame 31, and a limiting crossbar 30 inserted and fixed to the inner end of the central pin 32. The operating component 5 is connected to the central pin 32 to drive its axial direction.

[0043] The movable, limiting crossbar 30 and / or center pin 32 are equipped with elastic components. The limiting crossbar 30 can move along the slide groove 42 and be spring-loaded into the positioning slot 41 by the elastic component. The height difference of the positioning slots 41 can be set to equidistant or non-equidistant arrangement according to actual needs, with equidistant arrangement facilitating linear angle adjustment. The connection between the locking pin frame 31 and the frame 1 includes welding, bolt fixing, or integral molding, with bolt fixing facilitating later maintenance. The axial movement of the center pin 32 can be achieved through threaded transmission, lever transmission, or linear bearing, with lever transmission facilitating amplification of operating force. This technical solution, through the cooperative design of the positioning slot 41 and the slide groove 42, allows the limiting crossbar 30 to smoothly transition along a predetermined path during adjustment, avoiding the cumbersome operation of completely disengaging from the positioning hole required by traditional pin-type adjustment. The elastic component enables the limiting crossbar 30 to have an automatic reset function, automatically engaging when it moves to the target positioning slot 41, generating clear tactile feedback. The axial drive of the center pin 32 converts the motion of the operating component 5 into linear motion, achieving efficient transmission of adjustment force. Compared with existing technologies, this solution achieves real-time synchronization between adjustment operation and gear position display in a purely mechanical structure, providing a precise physical positioning reference without relying on electronic sensors, and solving the technical problem of poor linkage between mechanical gear position indication and adjustment mechanism.

[0044] Furthermore, the locking pin bracket 31 includes an outer sleeve 34 and a limiting sleeve 35 fixed inside the outer sleeve 34. A center pin 32 passes through the limiting sleeve 35, with its outer end connecting to the operating component 5. The outer sleeve 34 is made of high-strength alloy steel, and its inner wall has an annular groove for interference fit fixing of the limiting sleeve 35. The limiting sleeve 35 is a copper-based powder metallurgy part, with its inner hole precision-ground to form an H7-grade tolerance guide channel, and its surface plated with hard chrome to reduce the coefficient of friction. The outer end of the center pin 32 has an external thread structure, allowing for detachable connection to the operating rod 5 via a nut. As a preferred embodiment, the limiting sleeve 35 can be replaced with a split structure, consisting of two semi-circular bushings joined together, facilitating replacement after wear. Furthermore, a radial locating pin can be added between the outer sleeve 34 and the limiting sleeve 35 to prevent circumferential rotation of the limiting sleeve 35. This technical solution uses the precise fit between the limiting sleeve 35 and the center pin 32 to convert the axial driving force of the operating component 5 into the linear motion of the center pin 32. The rigid support provided by the outer sleeve 34 ensures that the force transmission path does not pass through the frame 1 body and acts directly on the positioning slot 41, thereby reducing the elastic deformation loss of the operating force during transmission.

[0045] Furthermore, this application proposes that the elastic component adopts a tension spring 300 structure, with one end of the tension spring 300 connected to the locking pin frame 31 and the other end connected to the limiting crossbar 30. Specifically, the tension spring 300 can be a helical tension spring, with both ends detachably connected to the locking pin frame 31 and the limiting crossbar 30 via hooks or buckles. As a preferred embodiment, the connection point between the tension spring 300 and the locking pin frame 31 is located on the inner side wall of the locking pin frame 31, and the connection point with the limiting crossbar 30 is located at the axial center of the limiting crossbar 30. Thus, this technical solution achieves bidirectional mechanical feedback through the elastic connection of the tension spring 300: when the limiting crossbar 30 moves along the slide groove 42, the tensile deformation of the tension spring 300 generates a gradually increasing rebound force, causing the limiting crossbar 30 to accurately engage with the positioning slot 41. When the operating component 5 releases the lock, the accumulated elastic potential energy is converted into a retraction force, assisting the limiting crossbar 30 to quickly reset. Compared with existing technologies that lack an elastic reset structure, this design effectively solves the problem of jamming caused by the lack of elastic assistance during adjustment, while enhancing the stability of gear locking through continuous elastic preload.

[0046] In the description of this specification, references are made to the terms "one embodiment," "some embodiments," "example," and "specific example."

[0047] Descriptions such as "or some examples" 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, 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.

[0048] 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. An angle adjustment display structure for a treadmill, comprising a base frame (2), a frame (1) for arranging the running track, and side shells (11) fixed to both sides of the frame; the front end of the frame (1) is pivotally connected to the base frame (2), and the rear end is connected to the base frame (2) through a positioning adjustment mechanism, characterized in that: A gear pointer (7) is fixed to the side of the base frame (2). A strip-shaped through hole or strip-shaped transparent hole (9) corresponding to the gear pointer (7) is provided on the side wall of the side housing (11), and a gear mark (8) is provided next to the strip-shaped through hole or strip-shaped transparent hole (9). When the frame (1) adjusts its height through the positioning adjustment mechanism, the side housing (11) moves with the frame (1) so that the gear pointer (7) is aligned with the corresponding gear mark (8).

2. The treadmill angle adjustment display structure according to claim 1, characterized in that: The gear position pointer (7) is fixed to the outer wall of the positioning seat (4), and a plate (70) is fixed to the outside of the gear position pointer (7), with the pointer tip passing through the through hole of the plate (70).

3. The treadmill angle adjustment display structure according to claim 1, characterized in that: The base frame (2) is connected to both sides of the frame (1) via pneumatic rods (10).

4. The treadmill angle adjustment display structure according to claim 1, characterized in that: The positioning adjustment mechanism includes a positioning seat (4) on the base frame (2), a locking pin assembly (3) on the frame (1) and an operating component (5); the positioning seat (4) is provided with at least two positioning slots (41) of different heights, and the operating component (5) controls the output end of the locking pin assembly (3) to engage or disengage from the positioning slots (41) to adjust the height of the frame (1).

5. The treadmill angle adjustment display structure according to claim 4, characterized in that: The base frame (2) has positioning seats (4) on both sides of its rear end, and the frame (1) has locking pin assemblies (3) on both sides of its rear end. The operating component (5) is an operating lever, with its two ends connected to the locking pin assemblies (3) on both sides respectively.

6. The treadmill angle adjustment display structure according to claim 5, characterized in that: The frame (1) has an auxiliary grip bar (6) fixed to the rear side of the control lever.

7. The treadmill angle adjustment display structure according to claim 4, characterized in that: The positioning seat (4) includes two parallel positioning side plates (40), and the two positioning side plates (40) are provided with positioning slots (41) respectively; the locking pin assembly (3) is located between the two positioning side plates (40), and its output ends on both sides can be inserted into the positioning slots (41).

8. The treadmill angle adjustment display structure according to claim 7, characterized in that: The positioning side plate (40) is provided with multiple positioning slots (41) of different heights, and adjacent positioning slots (41) are connected by a sliding groove (42); the locking pin assembly (3) includes a locking pin frame (31) connected to the frame (1), a central pin (32) axially movable on the locking pin frame (31), and a limiting crossbar (30) inserted and fixed to the inner end of the central pin (32); the operating component (5) is connected to the central pin (32) to drive its axial movement, and the limiting crossbar (30) and / or the central pin (32) are provided with elastic components, and the limiting crossbar (30) can move along the sliding groove (42) and be spring-loaded into the positioning slot (41) by the elastic force of the elastic component.

9. The treadmill angle adjustment display structure according to claim 8, characterized in that: The locking pin frame (31) includes an outer tube (34) and a limiting sleeve (35) fixed inside the outer tube (34); the center pin (32) passes through the limiting sleeve (35), and its outer end passes through the limiting sleeve (35) and is connected to the operating component (5).

10. The treadmill angle adjustment display structure according to claim 8, characterized in that: The elastic component is a tension spring (300), one end of which is connected to a locking pin frame (31), and the other end is connected to a limiting crossbar (30).

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