Angle-adjustable running machine

Abstract

The utility model relates to the technical field of fitness equipment, in particular to an angle-adjustable treadmill which comprises a base frame and a frame used for arranging a runway. One of the front end and the rear end of the frame is pivoted to the base frame, and the other end of the frame is connected with the base frame through a positioning adjusting mechanism; the positioning adjusting mechanism comprises a positioning seat arranged on the base frame, a lock pin assembly and an operation part, wherein the lock pin assembly and the operation part are arranged on the frame. The positioning seat is provided with at least two positioning notches with different heights, and an operation part can control the output end of the lock pin assembly to be clamped into or retreat from the positioning notches, so that the height of the movable end of the frame relative to the base frame is adjusted. The treadmill has the advantages that the angle of the treadmill can be adjusted according to the requirements of a user, and the exercise effect and comfort are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of body -building equipment especially, a running machine of adjustable angle. BACKGROUND

[0002] The running machine is the body -building equipment of family and gymnasium, wherein the unpowered running machine is widely paid attention to because of its green low carbon characteristic. The biggest feature of the unpowered running machine is not needing to plug in, only relying on the body action force of user to drive. Compared with the traditional electric running machine, the unpowered running machine adopts different drive mode. The traditional running machine drives the running belt through motor, and the user is passive running, and the unpowered running machine requires the user to take the initiative to exert force, and this mode can maximize the development of the movement mode and movement ability of runner. The core design of the unpowered running machine is the arc running platform that is upturned. The user only needs to change the front and back position of body gravity center to control the running speed and state. This design not only lets the user be able to independently control the speed, but also can effectively improve the comfort of ankle joint, reduces the impact on joint. In comparison, the traditional electric running machine can appear the situation that the footstep cannot keep up with the running belt speed when using, thereby causing the impact on knee joint. In addition, the unpowered running machine also avoids the risk of accidental sudden stop caused by sudden power failure.

[0003] However, the unpowered running machine on the market still has some limitations. The most important problem is that the running platform angle is not adjustable, which leads to the user only being able to exercise on the running platform of fixed angle. Long-term exercise at the same angle will make the body continuously bear the force in a single direction, which can increase the risk of body injury. At the same time, the design of fixed angle also limits the adjustment of exercise intensity, so that the running machine is difficult to meet the needs of different users or the needs of the same user at different periods. These problems make the existing unpowered running machine not suitable as long-term exercise equipment.

[0004] In view of the above problems, the prior art needs to be improved. SUMMARY

[0005] In order to solve the above problems, the utility model aims at providing a running machine with adjustable angle, which has the advantages of adjusting the running platform angle according to the user's needs, improving the exercise effect and comfort.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides an angle-adjustable running machine, and the technical scheme is as follows: a base frame and a vehicle frame for arranging a running track; one end of the front end and the rear end of the vehicle frame is pivoted to the base frame, and the other end is connected to the base frame through a positioning adjusting mechanism; the positioning adjusting mechanism comprises a positioning seat arranged on the base frame, a lock pin assembly arranged on the vehicle frame and an operating part; at least two positioning notches with different heights are arranged on the positioning seat, and the operating part can control the output end of the lock pin assembly to be clamped into or out of the positioning notches, so as to adjust the height of the movable end of the vehicle frame relative to the base frame.

[0008] Further, the utility model also provides that the front end or the rear end of the base frame and the vehicle frame is respectively provided with a positioning seat and a lock pin assembly, and the operating part is constructed as an operating rod, and the two ends of the operating rod are respectively connected to the lock pin assemblies on the two sides.

[0009] Further, the utility model also provides that the positioning seat comprises two parallel positioning side plates, and the two positioning side plates are respectively provided with a positioning notch; the lock pin assembly is arranged between the two positioning side plates of the positioning seat, and the two sides of the lock pin assembly are provided with output ends for clamping into or out of the positioning notches on the two sides.

[0010] Further, the utility model also provides that the two positioning side plates are provided with a plurality of positioning notches with different heights, the plurality of positioning notches are not connected and are arranged in an arc shape with the pivoting axis point of the vehicle frame as the center; the lock pin assembly comprises a lock pin frame connected to the vehicle frame, a center pin rod axially movably arranged in the lock pin frame and lock pins arranged on the two sides of the center pin rod; the operating part is connected to the center pin rod for driving the center pin rod to move axially, the inner side walls of the two lock pins are in abutment with the inclined surfaces of the center pin rod, and the center pin rod can drive the two lock pins to relatively approach or move away when moving axially, so as to control the lock pins to be clamped into or out of the positioning notches.

[0011] Further, the utility model also provides that the lock pin frame comprises an outer sleeve and a limiting sleeve fixed in the outer sleeve; the center pin rod is arranged in the limiting sleeve, the outer end of the center pin rod passes through the end of the limiting sleeve and is connected to the operating part, and the limiting sleeve is provided with a first spring for elastically supporting the center pin rod.

[0012] Further, the application further provides that the locking pin frame further comprises a transverse tube and locking pin covers connected to both sides of the transverse tube; the middle part of the transverse tube is provided with a socket, and the locking pins are arranged in the transverse tube on both sides of the socket, and second springs acting on the locking pins are arranged on both sides, respectively; the center pin rod is inserted into the socket, and the locking pins on both sides are pressed against the center pin rod by the second springs; the end of the center pin rod is constructed as a tapered tip; during the axial movement of the center pin rod, when the middle section of the center pin rod is supported on the locking pins, the outer ends of the locking pins are pushed out of the locking pin frame and clamped into the positioning notches; when the tapered tip of the center pin rod is supported on the locking pins, the elastic force of the second springs presses the outer ends of the locking pins on both sides into the locking pin frame so that they are out of the positioning notches.

[0013] Further, the application further provides that the two positioning side plates are provided with a plurality of positioning notches of different heights, and the plurality of positioning notches are connected in communication through sliding grooves; the locking pin assembly comprises a locking pin frame connected with the frame, a center pin rod axially movably arranged on the locking pin frame, and a limiting cross rod inserted into the inner end of the center pin rod; the operating component is connected with the center pin rod for driving the axial movement of the center pin rod, and the limiting cross rod and / or the center pin rod are provided with elastic components for pressing the limiting cross rod towards the positioning notches.

[0014] Further, the application further provides that the locking pin frame comprises an outer sleeve and a limiting sleeve fixedly connected in the outer sleeve; the center pin rod is arranged in the limiting sleeve, the outer end of the center pin rod passes through the end of the limiting sleeve and is connected with the operating component, and the limiting sleeve is provided with a first spring for elastically supporting the center pin rod.

[0015] Further, the application further provides that a tension spring is further included, one end of the tension spring is connected to the locking pin frame, and the other end is connected to the limiting cross rod.

[0016] As can be seen from the above, the application provides an angle-adjustable treadmill, which comprises a base frame and a frame for arranging a running track; one of the front end and the rear end of the frame is pivotally connected to the base frame, and the other end is connected to the base frame by using a positioning adjusting mechanism; the positioning adjusting mechanism comprises a positioning seat arranged on the base frame, a locking pin assembly arranged on the frame, and an operating component; the positioning seat is provided with at least two positioning notches of different heights, and the operating component can control the output end of the locking pin assembly to be clamped into or out of the positioning notches, so as to adjust the height of the movable end of the frame relative to the base frame. The angle adjustment of the frame is realized by the positioning adjusting mechanism, which solves the problem that the angle of the running track of the existing non-powered treadmill cannot be adjusted, has the advantages that the angle of the running track can be adjusted according to the requirements of the user, and the exercise effect and comfort are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1Provided for this application is a diagram of the adjustable angle treadmill in Example 1.

[0018] Figure 2 Provided for this application is a diagram of the adjustable angle treadmill in Example 1.

[0019] Figure 3 Provided for this application is a diagram of the adjustable angle treadmill in Example 1.

[0020] Figure 4 Provided for this application is a diagram of the adjustable angle treadmill in Example 1.

[0021] Figure 5 Provided for this application is a diagram of the adjustable angle treadmill in Example 1.

[0022] Figure 6 Provided for this application is a diagram of the adjustable angle treadmill in Example 1.

[0023] Figure 7 Provided for this application is a diagram of the adjustable angle treadmill in Example 1. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0025] In the description of the present application, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0027] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0028] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features directly contact, can also include the first and second features are not directly contact but contact through another feature between them. Moreover, the first feature is "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature. The first feature is "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0029] Embodiment 1:

[0030] As shown in Figures 1-4 The utility model relates to a kind of angle-adjustable treadmills, especially applicable to a kind of unpowered treadmill, including base frame and the frame 1 for arranging racecourse.The front end and one of the rear end of frame 1 are pivoted on base frame 2, and the other end is connected with base frame 2 using positioning adjusting mechanism.Positioning adjusting mechanism includes the positioning seat 4 arranged on base frame 2, and lock pin assembly and operating part 5 arranged on frame 1.Positioning seat 4 is provided with at least two different height positioning notches 41, and operating part 5 can control the output end of lock pin assembly to be inserted or exit positioning notches 41, to adjust the height of movable end of frame 1 relative to base frame 2.The technical scheme of the application is pivoted by base frame 2 and frame 1, so that frame 1 can rotate around base frame 2, to realize the adjustment of angle.Positioning seat 4 and lock pin assembly in positioning adjusting mechanism can make the output end of lock pin assembly be inserted or exit different height positioning notches 41 on positioning seat 4 by the control of operating part 5, so that the height of movable end of frame 1 relative to base frame 2 can be adjusted as required, to realize the flexible adjustment of angle of frame 1.This design not only improves the use flexibility of treadmill, but also enhances the movement experience of user, to adjust movement intensity according to the needs of user, to achieve the purpose of progressive movement.Compared with prior art, the technical scheme of the application has the advantages of simple structure, convenient operation, high adjustment precision, etc., and can effectively solve the technical problem of inconvenient angle adjustment of frame 1 of treadmill.

[0031] As Figure 1 and 3 shown, the base frame 2 and the front end of the two sides or the rear end of the two sides of the frame 1 are respectively provided with positioning seats 4 and lock pin assemblies 3, and the operating part 5 is constructed as an operating rod, the two ends of which are respectively connected to the lock pin assemblies 3 on both sides. Specifically, the positioning seat 4 can be designed as a metal plate fixed on the base frame 2, and a plurality of positioning notches 41 of different heights are formed on it, which are used to receive the output ends of the lock pin assemblies 3. The lock pin assembly 3 can include one or more lock pins, which are controlled to enter or exit the positioning notches 41 by the movement of the operating rod. The operating rod can be a long strip-shaped metal rod, the two ends of which are connected to the lock pin assemblies 3 through hinge or sliding connection, so that the movement of the operating rod can synchronously control the lock pins on both sides. As a preferred embodiment, the operating rod can be designed to have a locking mechanism, which can fix the position of the operating rod after the lock pin assemblies 3 are clamped into the positioning notches 41, thereby ensuring the stable connection between the treadmill frame 1 and the base frame 2. In addition, the operating rod can also be equipped with a non-slip handle to improve the convenience and safety of user operation. Through the above design, the technical scheme of the present application effectively solves the technical problems of inconvenient operation and insufficient stability of the positioning adjustment mechanism between the treadmill frame 1 and the base frame 2. The design of the operating rod enables the user to control the lock pin assemblies 3 on both sides simultaneously through a single operation, which not only improves the convenience of operation, but also ensures the synchronization of the adjustment of the two sides of the treadmill, thereby improving the overall stability and safety of the treadmill. Compared with the prior art, the technical scheme of the present application has obvious advantages in operation convenience and stability.

[0032] In a specific scheme, the positioning seat 4 includes two parallel positioning side plates 40, and the two positioning side plates 40 are correspondingly provided with positioning notches 41; the lock pin assembly 3 is between the two positioning side plates 40 of the positioning seat 4, and the two sides of the lock pin assembly 3 are provided with output ends for clamping into or exiting the positioning notches 41 on both sides. Specifically, the parallel arrangement of the positioning side plates 40 ensures the stability of the lock pin assembly 3 during operation, and the design of the positioning notches 41 allows the output ends of the lock pin assembly 3 to be fixed at different height positions. The output ends of the lock pin assembly 3 can simultaneously clamp into or exit the positioning notches 41 on both sides through mechanical linkage, which not only simplifies the operation steps, but also improves the convenience of operation and the stability of positioning. Therefore, by optimizing the structural design of the positioning seat 4 and the lock pin assembly 3, the technical scheme effectively solves the technical problems of unstable positioning and complex operation during the angle adjustment of the treadmill frame 1. Compared with the prior art, this scheme not only improves the stability of adjustment and the convenience of operation, but also simplifies the structural design, reduces the manufacturing cost and maintenance difficulty.

[0033] As Figures 2-4In the shown embodiment, the two positioning side plates 40 are provided with a plurality of positioning notches 41 of different heights, which are not connected and arranged in an arc shape with the pivot point of the frame 1 as the center. The arc-shaped arrangement of the positioning notches 41 allows the frame 1 to be fixed at multiple different angle positions, thereby achieving multi-stage adjustment. The lock pin assembly 3 includes a lock pin frame 31 connected to the frame 1, a center pin rod 32 axially movably arranged on the lock pin frame 31, and lock pins 33 arranged on both sides of the center pin rod 32; the operating part 5 is connected to the center pin rod 32 for driving the center pin rod 32 to move axially, the inner wall of the lock pins 33 on both sides is in abutment with the inclined surface of the center pin rod 32, and the center pin rod 32 moves axially to drive the lock pins 33 on both sides to move relatively close or away, thereby controlling the lock pins 33 to be clamped into or withdrawn from the positioning notches 41. The design of the lock pin assembly 3 drives the relative movement of the lock pins 33 on both sides by the axial movement of the center pin rod 32, so that the lock pins 33 can be accurately clamped into or withdrawn from the positioning notches 41, ensuring the stability of the adjustment process and the simplicity of the operation. Among them, the inclined surface design of the center pin rod 32 allows the lock pins 33 to automatically adjust the position when moving axially, further improving the accuracy of the adjustment and the convenience of the operation. Therefore, the technical scheme of the present application realizes the multi-stage adjustment of the angle of the treadmill frame 1 by setting a plurality of not connected positioning notches 41 and the design of the lock pin assembly 3, and ensures the stability of the adjustment process and the simplicity of the operation. Compared with the prior art, the technical scheme not only improves the flexibility of the treadmill, but also enhances the reliability of the structure and the operation experience of the user.

[0034] In specific solutions, the locking pin holder 31 comprises an outer sleeve 34 and a limiting sleeve 35 fixed in the outer sleeve 34; the center pin rod 32 is arranged in the limiting sleeve 35, the outer end of the center pin rod 32 is connected with the operating component 5 through the end of the limiting sleeve 35, and the limiting sleeve 35 is provided with a first spring 36 for elastically supporting the center pin rod 32. The outer sleeve 34 and the limiting sleeve 35 are designed so that the center pin rod 32 can be elastically supported by the first spring 36 in the limiting sleeve 35 when moving axially, thereby improving the stability of the movement of the center pin rod 32. The first spring 36 in the limiting sleeve 35 provides elastic support when the center pin rod 32 moves axially, so that the center pin rod 32 can automatically reset when the external force is removed, thereby causing the locking pins 33 on both sides to be pushed out and maintaining the locked state. The outer end of the center pin rod 32 is connected with the operating component 5, so that the operating component 5 can directly control the axial movement of the center pin rod 32, simplifying the operation process. Through this design, the movement of the center pin rod 32 is more stable and the operation is more convenient when the locking pin assembly 3 adjusts the height of the frame 1. In this solution, the limiting sleeve 35 can be fixed in the outer sleeve 34 by welding, threaded connection or tight fitting, to ensure its stability. The first spring 36 can be a coil spring or a disc spring, and the specific selection depends on the required elastic force and space limitation. The outer end of the center pin rod 32 can be connected with the operating component 5 by threaded connection or buckle connection, to facilitate disassembly and maintenance. Thus, through the design of the outer sleeve 34 and the limiting sleeve 35 of the locking pin holder 31, combined with the elastic supporting effect of the first spring 36, the technical problem of instability and inconvenience in operation of the center pin rod 32 when moving axially is effectively solved. Compared with the prior art, this solution not only improves the stability of the movement of the center pin rod 32, but also simplifies the operation process, making the locking pin assembly 3 more reliable and convenient when adjusting the height of the frame 1.

[0035] Further, the locking pin holder 31 further comprises a transverse tube 37 and locking pin covers 38 connected to both sides of the transverse tube 37; the middle part of the transverse tube 37 is provided with a insertion hole 370, and the two locking pins 33 are arranged in the transverse tube 37 on both sides of the insertion hole 370, and the two sides are respectively provided with a second spring 39 acting on the locking pin 33; the center pin rod 32 is inserted into the insertion hole 370, and the two locking pins 33 are pressed against the center pin rod 32 by the second spring 39; the end of the center pin rod 32 is designed as a tapered tip 320; during the axial movement of the center pin rod 32, when the middle segment of the center pin rod 32 supports the locking pin 33, the outer end of the locking pin 33 is pushed out of the locking pin holder 31 and clamped into the positioning notch 41; when the tapered tip 320 of the center pin rod 32 supports the locking pin 33, the elastic force of the second spring 39 presses the outer end of the two locking pins 33 into the locking pin holder 31 to make it exit the positioning notch 41. Specifically, the design of the transverse tube 37 enables the locking pin 33 to move axially in the transverse tube 37, and the locking pin cover 38 is used to fix the position of the locking pin 33 to prevent the locking pin 33 from falling out of the end of the transverse tube 37 during movement. The arrangement of the insertion hole 370 enables the center pin rod 32 to smoothly insert and push the locking pin 33, and the second spring 39 acts to quickly press the locking pin 33 back to its original position when the center pin rod 32 exits, ensuring the smoothness and stability of the clamping and exiting operations of the locking pin 33 and the positioning notch 41. As a preferred embodiment, the second spring 39 can be a compression spring, and its elastic force can be adjusted according to actual needs to ensure that the locking pin 33 can quickly reset when exiting the positioning notch 41.

[0036] Therefore, the technical scheme realizes the smooth clamping and exiting of the locking pin 33 and the positioning notch 41 through the coordinated action of the transverse tube 37, the locking pin cover 38, the insertion hole 370, and the second spring 39. Specifically, the center pin rod 32 is inserted into the insertion hole 370 of the transverse tube 37 and can move axially, and when the middle segment of the center pin rod 32 supports the locking pin 33, the locking pin 33 is pushed out and clamped into the positioning notch 41, thereby fixing the height of the frame 1; when the tapered tip 320 of the center pin rod 32 supports the locking pin 33, the elastic force of the second spring 39 presses the locking pin 33 back into the locking pin holder 31, making it exit the positioning notch 41, thereby allowing the height adjustment of the frame 1. This design ensures the smoothness and stability of the clamping and exiting operations of the locking pin 33 and the positioning notch 41 through the elastic force of the spring, solving the problem of jamming or instability that may occur when the locking pin assembly 3 adjusts the height. Compared with the prior art, this scheme not only improves the convenience of operation, but also enhances the reliability of the locking pin assembly 3, making the height adjustment of the treadmill frame 1 more smooth and stable.

[0037] When the angle of the treadmill is adjusted, the user needs to hold the operating rod and the rear end of the base frame 2 with both hands, pull the operating rod backward and downward, and move the center pin 32 backward and downward. The locking pins 33 on both sides of the center pin 32 are subjected to the elastic force of the second springs 39, and because the center pin 32 is designed like a cone, the space ratio inside the transverse tube 37 decreases as the center pin 32 exits backward and downward, the locking pins 33 on both sides slowly approach the center, and the locking pins 33 gradually exit the hole positions in the base frame 2. When the movement is limited, the operating rod can be moved to rotate the entire rear adjustment structure and the frame 1 to the desired hole position. Slowly release the operating rod, and the center pin 32 is subjected to the elastic force of the first spring 36, moving forward and upward, increasing the space ratio inside the transverse tube 37 as the center pin 32 moves forward and upward, and gradually pushing the locking pins 33 on both sides out to the side, limiting the hole positions on the base frame 2.

[0038] Embodiment 2:

[0039] As shown in Figures 5-7 , the present embodiment relates to an angle-adjustable treadmill, especially suitable for a non-powered treadmill, including a base frame 2 and a frame 1 for arranging a running track. One of the front end and the rear end of the frame 1 is pivoted to the base frame 2, and the other end is connected to the base frame 2 by a positioning adjustment mechanism. The positioning adjustment mechanism includes a positioning seat 4 arranged on the base frame 2, and a locking pin assembly 3 and an operating part 5 arranged on the frame 1. The positioning seat 4 is provided with at least two positioning slots 41 of different heights, and the operating part 5 can control the locking pin assembly 3 to be inserted or withdrawn from the positioning slots 41, thereby adjusting the height of the movable end of the frame 1 relative to the base frame 2. Compared with Embodiment 1, the difference between the present embodiment and Embodiment 1 is that the structure of the positioning seat 4 and the locking pin assembly 3 is different, as follows.

[0040] As shown in Figure 5 and 6 , the positioning seat 4 in the present embodiment also includes two parallel positioning side plates 40. The two positioning side plates 40 are provided with a plurality of positioning slots 41 of different heights, and the plurality of positioning slots 41 are connected by a sliding groove 42. As shown in Figure 7As shown, the locking pin assembly 3 comprises a locking pin frame 31 connected with the frame 1, a center pin rod 32 axially movably arranged on the locking pin frame 31, and a limiting crossbar 30 inserted into the end of the center pin rod 32; the operating component 5 is connected with the center pin rod 32 for driving the center pin rod 32 to move axially, and the limiting crossbar 30 and / or the center pin rod 32 is provided with an elastic component for pressing the limiting crossbar 30 to the positioning notch 41; the limiting crossbar 30 can move along the sliding groove 42 and be clamped into any one of the positioning notches 41 based on the elastic force of the elastic component. Specifically, the plurality of positioning notches 41 on the positioning side plate 40 are connected and communicated through the sliding groove 42, so that the limiting crossbar 30 can continuously slide in the sliding groove 42, thereby realizing continuous adjustment of the treadmill angle. The center pin rod 32 in the locking pin assembly 3 moves axially through the driving of the operating component 5, and drives the limiting crossbar 30 to slide in the sliding groove 42. The elastic component arranged on the limiting crossbar 30 and / or the center pin rod 32 can press the limiting crossbar 30 to the positioning notch 41, so as to ensure that the limiting crossbar 30 can be tightly clamped into any one of the positioning notches 41, thereby realizing accurate adjustment and fixation of the treadmill angle. As a preferred embodiment, the elastic component can be a spring or other elastic material, and the elastic force thereof can ensure the close fit of the limiting crossbar 30 and the positioning notch 41, thereby improving the stability of the adjusted treadmill. In addition, the design of the sliding groove 42 enables the limiting crossbar 30 to smoothly transition between the plurality of positioning notches 41, avoiding the limitation that the traditional treadmill can only be adjusted at discrete angles. Thus, through the synergistic effect of the sliding groove 42, the locking pin assembly 3 and the elastic component, the present application realizes continuous adjustment and stable fixation of the treadmill angle after adjustment, solves the problems of inconvenient adjustment and insufficient stability of the treadmill of the traditional treadmill. Compared with the prior art, the technical scheme of the present application not only improves the flexibility and accuracy of the adjustment of the treadmill angle, but also enhances the stability after adjustment, so that the treadmill is safer and more reliable during use.

[0041] Further, the application also proposes that the locking pin frame 31 comprises an outer sleeve 34 and a limiting sleeve 35 fixed in the outer sleeve 34; the center pin rod 32 is arranged in the limiting sleeve 35, the outer end of the center pin rod 32 is connected with the operating part 5 through the end of the limiting sleeve 35, and the limiting sleeve 35 is provided with a first spring 36 for elastically supporting the center pin rod 32. Wherein, the structure design of the outer sleeve 34 and the limiting sleeve 35 provides stable support for the center pin rod 32, ensuring the stability of the center pin rod 32 when moving in the axial direction. The first spring 36 in the limiting sleeve 35 is the elastic component mentioned above, and the first spring 36 elastically supports the center pin rod 32, and when the external force is removed, the center pin rod 32 can be supported forward based on the elasticity of the first spring 36, so that the limiting cross rod 30 is clamped into the positioning notch 41. This structure design effectively improves the stability of the locking pin assembly 3, ensuring the accuracy and reliability of the treadmill angle adjustment. Specifically, the outer sleeve 34 can be made of metal material to provide sufficient strength and rigidity. The limiting sleeve 35 can be fixed inside the outer sleeve 34 by welding or bolt connection, ensuring the firm connection between the limiting sleeve 35 and the outer sleeve 34. The material of the center pin rod 32 can be selected from high-strength alloy steel to withstand large axial force and friction force. The first spring 36 can be made of stainless steel material to ensure that it has good elasticity and corrosion resistance. As a preferred embodiment, the inner wall of the limiting sleeve 35 can be provided with a guide groove, and the outer wall of the center pin rod 32 is provided with a corresponding guide protrusion, so that the axial movement of the center pin rod 32 in the limiting sleeve 35 is more stable and accurate. In addition, the two ends of the first spring 36 can be fixed on the inner wall of the limiting sleeve 35 and the outer wall of the center pin rod 32 respectively, to provide uniform elastic supporting force. Therefore, the technical scheme of the application effectively solves the technical problem of insufficient stability of the locking pin assembly 3 in the process of adjusting the angle of the treadmill running belt through the structure of the outer sleeve 34 and the limiting sleeve 35 of the locking pin frame 31, and the first spring 36 in the limiting sleeve 35. Compared with the prior art, the technical scheme has higher stability and reliability, and can ensure the accuracy of the angle adjustment of the running belt, thereby improving the use experience and safety of the treadmill.

[0042] In a further preferred scheme, the structure further comprises a tension spring 300, one end of which is connected to the locking pin holder 31, and the other end is connected to the limiting crossbar 30. The tension spring 300 acts as an elastic element, which provides additional tension to enhance the stability of the locking pin assembly 3 when adjusting the angle of the treadmill. One end of the tension spring 300 is fixed to the locking pin holder 31, and the other end is connected to the limiting crossbar 30. This connection allows the tension spring 300 to provide continuous tension when the locking pin assembly 3 moves, helping the locking pin 33 to be more stably clamped into the positioning slot 41. The specific implementation of the tension spring 300 can include but is not limited to the following: the tension spring 300 can adopt the form of a coil spring, and the material can be high-strength alloy steel to ensure that it remains elastic after multiple uses; the length and elastic coefficient of the tension spring 300 can be adjusted according to actual needs to adapt to positioning slots 41 of different heights; the connection method of the tension spring 300 can adopt hook and loop connection to facilitate installation and replacement. The present application enhances the stability of the locking pin assembly 3 by adding the tension spring 300. One end of the tension spring 300 is connected to the locking pin holder 31, and the other end is connected to the limiting crossbar 30. This structure design allows the tension spring 300 to provide additional tension when adjusting the angle of the treadmill, helping the locking pin assembly 3 to be more stably clamped into the positioning slot 41, thereby improving the reliability and stability of the entire adjusting mechanism. Compared with the prior art, the technical scheme of the present application introduces the tension spring 300, effectively solving the problem of insufficient stability of the locking pin assembly 3 during the angle adjustment process of the non-powered treadmill, making the angle adjustment of the treadmill more smooth and reliable.

[0043] When adjusting the angle of the treadmill, the user needs to hold the operating rod and the rear end of the base frame 2 with both hands, pull the operating rod backward and downward, move the center pin 32 and the limiting crossbar 30 connected thereto backward and downward, at this time, the end of the limiting crossbar 30 retreats into the sliding groove 42 from the positioning slot 41, and the first spring 36 is compressed and the tension spring 300 is stretched, both storing potential energy. At this time, the operating rod can be moved, and the entire rear adjusting structure is rotated and adjusted with the frame 1, and when the desired positioning slot 41 is reached, the operating rod is slowly released, and under the action of the first spring 36 and the tension spring 300, the end of the limiting crossbar 30 is clamped into the corresponding positioning slot 41, achieving positioning.

[0044] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model.

Claims

1. An angle-adjustable treadmill, comprising a base frame (2) and a carriage (1) for arranging a running track; characterized in that: One end of the frame (1) is pivoted to the base frame (2), and the other end is connected to the base frame (2) by a positioning and adjusting mechanism; the positioning and adjusting mechanism comprises a positioning seat (4) arranged on the base frame (2), and a locking pin assembly (3) and an operating part (5) arranged on the frame (1); the positioning seat (4) is provided with at least two positioning notches (41) of different heights, and the operating part (5) can control the output end of the locking pin assembly (3) to be clamped into or withdrawn from the positioning notches (41), so as to adjust the height of the movable end of the frame (1) relative to the base frame (2).

2. An angle adjustable treadmill according to claim 1, characterized in that: The base frame (2) and the front end or the rear end of the frame (1) are respectively provided with a positioning seat (4) and a locking pin assembly (3), and the operating part (5) is constructed as an operating rod, and the two ends of the operating rod are respectively connected to the locking pin assemblies (3) on both sides.

3. An angle adjustable treadmill according to claim 1 or 2, characterized in that: The positioning seat (4) comprises two parallel positioning side plates (40), and the two positioning side plates (40) are correspondingly provided with positioning notches (41); the locking pin assembly (3) is arranged between the two positioning side plates (40) of the positioning seat (4), and the two sides of the locking pin assembly (3) are provided with output ends for clamping into or withdrawing from the positioning notches (41) on both sides.

4. An angle adjustable treadmill according to claim 3, characterized in that: The two positioning side plates (40) are provided with a plurality of positioning notches (41) of different heights, the plurality of positioning notches (41) are not connected and are arranged in an arc shape with the pivot point of the frame (1) as the center; the locking pin assembly (3) comprises a locking pin frame (31) connected with the frame (1), a center pin rod (32) axially movably arranged on the locking pin frame (31), and locking pins (33) arranged on both sides of the center pin rod (32); the operating part (5) is connected with the center pin rod (32) for driving the center pin rod (32) to move axially, the inner side walls of the locking pins (33) on both sides are in abutment with the inclined surface of the center pin rod (32), and when the center pin rod (32) moves axially, the locking pins (33) on both sides can be relatively close or far away, so as to control the locking pins (33) to be clamped into or withdrawn from the positioning notches (41).

5. An angle adjustable treadmill according to claim 4, characterized in that: The locking pin frame (31) comprises an outer sleeve (34) and a limiting sleeve (35) fixed in the outer sleeve (34); the center pin rod (32) is arranged in the limiting sleeve (35), the outer end of the center pin rod (32) passes through the end of the limiting sleeve (35) and is connected with the operating part (5), and the limiting sleeve (35) is provided with a first spring (36) for elastically supporting the center pin rod (32).

6. An angle adjustable treadmill according to claim 4, characterized in that: The lock pin holder (31) further comprises a transverse tube (37), and lock pin covers (38) connected to both sides of the transverse tube (37); the middle part of the transverse tube (37) is provided with a socket (370), and the lock pins (33) on both sides are arranged in the transverse tube (37) on both sides of the socket (370), and second springs (39) acting on the lock pins (33) are arranged on both sides; the center pin rod (32) is inserted into the socket (370), and the lock pins (33) on both sides are pressed against the center pin rod (32) by the second springs (39); the end of the center pin rod (32) is constructed as a tapered tip (320); during axial movement of the center pin rod (32), when the middle segment of the center pin rod (32) is supported on the lock pins (33), the outer ends of the lock pins (33) are ejected from the lock pin holder (31) and clamped into the positioning notches (41); when the tapered tip (320) of the center pin rod (32) is supported on the lock pins (33), the elastic force of the second springs (39) presses the outer ends of the lock pins (33) on both sides into the lock pin holder (31) to make them exit the positioning notches (41).

7. An adjustable angle treadmill as recited in claim 3, wherein: The two positioning side plates (40) are provided with a plurality of positioning notches (41) of different heights, and the plurality of positioning notches (41) are connected and communicated through sliding grooves (42); the lock pin assembly (3) comprises a lock pin holder (31) connected with the frame (1), a center pin rod (32) axially movably arranged on the lock pin holder (31), and a limiting cross rod (30) inserted into the inner end of the center pin rod (32); the operating component (5) is connected with the center pin rod (32) for driving the center pin rod (32) to move axially, and the limiting cross rod (30) and / or the center pin rod (32) are provided with elastic components for pressing the limiting cross rod (30) towards the positioning notches (41); the limiting cross rod (30) can move along the sliding grooves (42) and be clamped into any one of the positioning notches (41) based on the elastic force of the elastic components.

8. An angle adjustable treadmill according to claim 7, characterized in that: The lock pin holder (31) comprises an outer sleeve (34) and a limiting sleeve (35) fixedly connected in the outer sleeve (34); the center pin rod (32) is arranged in the limiting sleeve (35), the outer end of the center pin rod (32) passes through the end of the limiting sleeve (35) and is connected with the operating component (5), and the limiting sleeve (35) is provided with a first spring (36) for elastically supporting the center pin rod (32).

9. An adjustable angle treadmill as recited in claim 7, wherein: A tension spring (300) is further included, one end of the tension spring (300) is connected to the lock pin holder (31), and the other end is connected to the limiting cross rod (30).

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