Treadmill folding adjusting device

Abstract

The invention relates to the technical field of folding treadmills and discloses a treadmill folding adjusting device which comprises an air spring, the bottom of the air spring is hinged to the end of a chassis of a treadmill, and the top of the air spring is hinged to an inclined stand column of the treadmill through an adjusting locker. The adjusting locker is connected with a handle at the top of an inclined stand column of the treadmill through a brake line, a rotating plate hinged to the adjusting locker in a transition fit mode is arranged in the adjusting locker, one end of the rotating plate is connected with an air valve at the top of the air spring, and the other end of the rotating plate is connected with the brake line; the locking device has the advantages that the rotating plate in the locking device is adjusted to control opening or closing of the air valve so as to control stretching and retracting of the air spring, certain resistance needs to be overcome when the rotating plate rotates, and when the resistance is sufficiently larger than acting force needed by automatic opening or closing of the air valve, one-way control over opening or closing of the air valve is achieved; the folding for running is more convenient, and the operation is simpler.

Description

Technical Field

[0001] The invention belongs to the technical field of folding treadmills, and in particular relates to a folding adjustment device for a treadmill. Background Art

[0002] In the folding mechanism of a folding treadmill, gas springs are widely used. Among them, the self-locking gas spring, also known as the controllable gas spring (Lockable gas spring), is the most commonly used gas spring in the folding mechanism of a folding treadmill. This type of gas spring can stop at any position in the stroke with the help of some release mechanisms, and has a large locking force after stopping, which can reach more than 10,000N.

[0003] The Chinese invention patent with publication number CN110465045A discloses the field of treadmills, especially a treadmill with dual-mode adjustable handrails using four controllable gas spring structures, including a treadmill body, a handrail assembly dynamically connected to the treadmill body, the handrail assembly including handrails, columns, and a connector, the treadmill body including a frame, a slideway provided in the middle of the frame, a slider corresponding to the connector provided in the slideway, the frame provided with a first controllable gas spring for driving the slider, and a second controllable gas spring for rotating the connector, the treadmill also including a control device for controlling the locking and / or unlocking of the first controllable gas spring and the second controllable gas spring. Through the adjustable angle armrest assembly, the treadmill has multiple usage modes such as forward walking, backward walking, two people walking forward and backward at the same time, and running. In the specification of the patent, it is also disclosed that "the metal wire 43 is pulled by the pull ring 52, so that the driving block 42 squeezes the button 33, and the first controllable gas spring 3 and the second controllable gas spring 3a are unlocked at the same time, and then the angle of the column 22 relative to the frame 14 can be adjusted, and the armrest 21 is pushed or pulled to rotate the column 22 to a suitable position, and the pull ring 52 is released. The button 33 automatically rebounds under the action of the internal pressure of the cylinder body 31, and the first controllable gas spring 3 and the second controllable gas spring 3a are locked at the same time, thereby limiting the rotation of the column 22.

[0004] That is to say, when controlling the locking or opening of the gas spring, it is necessary to continuously maintain a force on the pull ring to keep the gas spring locked or opened. When the force on the pull ring disappears, the gas spring will return to its initial state. This results in the need for at least one hand to operate the pull ring when folding the treadmill, or the need for other people to assist in folding, which is inconvenient to operate. Summary of the invention

[0005] The objective to be achieved by the present invention is to solve the problem in the prior art that in order to control the locking or opening of the gas spring, it is necessary to continuously maintain a force on the pull ring in order to keep the gas spring locked or opened. When the force on the pull ring disappears, the gas spring will return to its initial state. This results in the need for at least one hand to operate the pull ring when folding the treadmill, or the need for other people to assist in folding, resulting in a technical problem of inconvenient operation.

[0006] In order to achieve the above object, the present invention provides a folding and adjusting device for a treadmill.

[0007] The specific technical solution adopted by the present invention is: A folding adjustment device for a treadmill, the folding adjustment device includes a gas spring, the bottom of the gas spring is hinged to the end of the chassis of the treadmill, the top of the gas spring is hinged to the oblique column of the treadmill through an adjustment lock, the adjustment lock is connected to the handle at the top of the oblique column of the treadmill through a brake line, wherein the adjustment lock is provided with a rotating plate hinged to the adjustment lock by a transition fit, one end of the rotating plate is connected to the air valve at the top of the gas spring, and the other end is connected to the brake line; when the handle is gripped or released, the brake line pulls or resets the adjustment lock to control the opening or closing of the air valve at the top of the gas spring.

[0008] Furthermore, two gas springs are provided, which are respectively arranged between the inclined columns on both sides of the treadmill chassis and the treadmill chassis. The gas spring is hinged to the treadmill chassis through a first hinge shaft. The other end of the gas spring is connected to an adjustment locker, and the adjustment locker is hinged to the middle and upper part of the inclined column through a second hinge shaft.

[0009] Furthermore, the adjustment locker includes an L-shaped fixing head; a connecting hole is provided at a corner of the L-shaped fixing head, and the connecting hole 201 is matched with a second hinge shaft for being hinged with the inclined column.

[0010] Furthermore, a fixing hole is provided at the bottom of the L-shaped fixing head for fixing the piston rod of the gas spring.

[0011] Furthermore, an adjustment locking shaft is provided on the side of the fixing hole of the L-shaped fixing head, and the outer cylindrical surface of the adjustment locking shaft is connected with the rotating plate through a transition fit; a rotating inclined surface is provided at one end of the rotating plate that contacts the air valve plug of the air valve.

[0012] Furthermore, a notch is provided at the other end of the rotating plate, and a brake head of the brake line is clamped in the notch.

[0013] Furthermore, the adjustment locker includes an adjustment locking shaft.

[0014] Furthermore, the adjusting locking shaft includes a base plate, the outer circumference of the base plate is interference fit with the rotating plate, the center of the base plate is connected to the second rotating shaft by a transition fit, the second rotating shaft is fixed to the position of the L-shaped fixing head on the side of the fixing hole, and a notch is provided at the lower side of the adjusting locking shaft, the notch includes a first arc-shaped cavity and a second arc-shaped cavity; a first vertex is provided at the intersection of the first limiting surface and the seventh limiting surface, a first rotating shaft is provided below the first vertex, and a locking block is provided on the outer cylindrical surface of the first rotating shaft 203.

[0015] Furthermore, the first arc plate and the seventh limiting surface form a first arc cavity 2031; the first limiting surface, the sixth limiting surface, and the fifth limiting surface form a second arc cavity; the outer side of the second arc cavity is provided with a third vertex, and the outer side of the third vertex is provided with a fourth limiting surface, and the fourth limiting surface is located inside the outer circle of the adjusting locking shaft.

[0016] Furthermore, the width between the lines connecting the vertices of the two arc edges of the locking block is smaller than the width of the first arc cavity, so that the locking block can slide in the first arc cavity; V-shaped positioning grooves are provided at both ends of the locking block.

[0017] The positive effect of the present invention is that the opening or closing of the air valve is controlled by adjusting the rotating plate in the locker, so that the inert gas enclosed in the gas spring can flow in different chambers to control the extension and contraction of the gas spring. Since the rotating plate is hinged to the adjusting locker, a certain resistance needs to be overcome when the rotating plate rotates. When the resistance is greater than the force required for the automatic opening or closing of the air valve, one-way control of the opening or closing of the air valve is achieved. Compared with the self-locking gas spring in the prior art, which requires the switch to be kept under hand control at all times for opening or closing the air valve, it is more convenient to fold for running and simpler to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a treadmill to which the folding adjustment device of the treadmill of the present invention is applied; Figure 2 yes Figure 1 An enlarged view of a folding adjustment device for a treadmill according to the present invention at position E is shown in FIG. Figure 3 yes Figure 1 A sectional view of a folding adjustment device for a treadmill according to the present invention is shown in the KK direction; Figure 4 yes Figure 3 A front view of a folding adjusting device for a treadmill according to the present invention after folding; Figure 5 yes Figure 2 A schematic diagram of the structure of the locking shaft of a folding adjustment device for a treadmill according to the present invention; Figure 6It is a structural principle diagram of a self-locking gas spring used in a folding adjustment device of a treadmill of the present invention; Legend: 1—gas spring, 101—symmetrical gas spring, 102—piston rod, 103—piston cylinder, 104—gas valve plug, 105—first cavity, 106—second cavity, 107—third cavity, 108—fourth cavity, 109—inner piston, 2—adjusting lock, 201—hinge hole, 202—L-shaped fixing head, 203—adjusting locking shaft, 2031—first arc-shaped cavity, 2032—first arc-shaped plate, 2033—first limiting surface, 2034—second limiting surface, 2035—third limiting surface, 2036—first vertex, 2037—locking block, 2038—first rotating shaft, 2039—second vertex, 20310—positioning groove, 20311—second arc-shaped plate, 20312—third vertex, 20313—fourth limiting surface, 20314—fifth limiting surface, 20315—sixth limiting surface, 20316—base plate, 20317—second rotating shaft, 20318—seventh limiting surface, 204—fixed support, 205—notch, 206—brake head, 207—rotating plate, 208—rotating inclined surface, 209—fixing hole, 3—first clamp, 4—first hinge, 401—second hinge, 5—handle, 6—second clamp, 7—fourth clamp, 8—brake line, 9—inclined column, 10—first articulated axis, 11—second articulated axis, 12—chassis. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments: In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] like Figures 1 to 5 As shown, it is a structural diagram of a folding adjustment device of a treadmill provided by an embodiment of the present invention, comprising a gas spring 1, the bottom of the gas spring 1 is hinged to the end of the chassis 12 of the treadmill, the top of the gas spring 1 is hinged to the inclined column 9 of the treadmill through an adjusting lock 2, the adjusting lock 2 is connected to the handle 5 at the top of the inclined column of the treadmill through a brake line 8, wherein the adjusting lock 2 is provided with a rotating plate 207 hinged to the adjusting lock 2 by a transition fit, one end of the rotating plate 207 is connected to the air valve at the top of the gas spring 1, and the other end is connected to the brake line 8; when the handle 5 is gripped or released, the brake line 8 pulls or resets the adjusting lock 2 to control the opening or closing of the air valve at the top of the gas spring 1.

[0023] Figure 1 , Figure 2 and Figure 4 The middle red curve is brake line 8.

[0024] In the embodiment of the present invention, the opening or closing of the air valve is controlled by adjusting the rotating plate in the locker, so that the inert gas enclosed in the gas spring can flow in different chambers to control the extension and contraction of the gas spring. Since the rotating plate is hinged to the adjusting locker, a certain resistance needs to be overcome when the rotating plate rotates. When the resistance is greater than the force required for the automatic opening or closing of the air valve, one-way control of the opening or closing of the air valve is achieved. Compared with the self-locking gas spring in the prior art, which requires the switch to be kept under hand control at all times for opening or closing the air valve, it is more convenient to fold for running and simpler to operate.

[0025] Specifically, Figures 1 to 6 As shown, a folding adjustment device for a treadmill comprises a gas spring 1, the bottom of the gas spring 1 is hinged to the end of a chassis 12 of the treadmill, the top of the gas spring 1 is hinged to the oblique column 9 of the treadmill through an adjustment locker 2, the adjustment locker 2 is connected to a handle 5 at the top of the oblique column of the treadmill through a brake line 8, wherein a rotating plate 207 hinged to the adjustment locker 2 is provided inside the adjustment locker 2, one end of the rotating plate 207 is connected to the air valve at the top of the gas spring 1, and the other end is connected to the brake line 8; when the handle 5 is tightened or released, the brake line 8 pulls or resets the adjustment locker 2, and controls the air valve at the top of the gas spring 1 to open or close; like Figure 1As shown, the handle 5 is fixed on the side of the operating panel at the top of the inclined column 9, and the brake line 8 connected to the handle 5 is fixed on the side of the inclined column 6 through at least one of the first clamp 3, the second clamp 6, and the fourth clamp 7; the brake line 8 mainly includes a brake cable, a protective cover and a wire; the brake cable is the core part of the brake system, which is made of metal and has a certain strength and wear resistance; the protective cover is wrapped around the brake cable to provide additional protection to prevent the cable from being damaged; the wire part is usually assembled and buckled with wire buckles in sections, and these wire buckles are in a wavy shape, with flanges and slots at the front and rear ends respectively to ensure the stable connection of the wire; the main function of the brake line is to brake, such as converting the rider's operation of the brake handle into a braking action, thereby achieving the braking of the vehicle. When the rider holds the brake handle, the brake line is stretched, and the force is transmitted through the wire tube, pushing the brake component to contact the wheel, generating friction, thereby achieving the effect of deceleration or parking; in this embodiment, the brake line is stretched, and the force is transmitted through the wire tube to push the rotating plate 207 to rotate, and the function of the brake line automatically returning to its original position is used; like Figure 1 and Figure 4 As shown, the bottom end of the inclined column 9 is hinged to the end of the chassis 12 of the treadmill through the second hinge 401, and the top end of the inclined column 9 is hinged to the operation panel of the treadmill through the first hinge 4; by rotating the first hinge 4 and the second hinge 401, the treadmill can be folded to the position shown in FIG. Figure 4 In the state shown, the brake line 8 is fixed by at least one of the first clamp 3, the second clamp 6, and the fourth clamp 7. Figure 4 The style shown is bent and fixed to the side of the inclined column 9; Preferably, the gas spring 1 is provided with two; Figure 3 As shown, one of the gas springs 1 is arranged between the inclined column 9 and the treadmill chassis 12, and the gas spring 1 is hinged to the treadmill chassis 12 through a first hinge shaft 10. The other end of the gas spring 1 is connected to an adjustment locker 2, and the adjustment locker 2 is hinged to the middle and upper part of the inclined column 9 through a second hinge shaft 11; the other gas spring is a symmetrical gas spring 101, which has the same structure as the gas spring 1 and is symmetrically connected between the inclined column 9 and the treadmill chassis 12 using the same mechanism; like Figure 2As shown, the adjustment locker 2 includes an L-shaped fixing head 202; a cross-connection hole 201 is provided at the corner of the L-shaped fixing head 202, and the cross-connection hole 201 is matched with a second hinge shaft 11 for being hinged with the inclined column 9; a fixing hole 209 is provided at the bottom of the L-shaped fixing head 202 for fixing the piston rod 102 of the gas spring 1, wherein the top of the piston rod 102 is provided with an air valve plug 104 of the air valve; an adjustment locking shaft 203 is provided on the side of the fixing hole 209 of the L-shaped fixing head 202, and the outer cylindrical surface of the adjustment locking shaft 203 is connected with the rotating plate 207 through a transition fit; One end of the rotating plate 207 in contact with the air valve plug 104 is provided with a rotating inclined surface 208, and the rotating inclined surface 208 is in contact with the air valve plug and is not fixed; the other end of the rotating plate 207 is provided with a notch 205, and the brake head 206 of the brake line 8 is clamped in the notch 205. When the brake line 8 is pulled, the brake head 206 drives the rotating plate 207 to rotate around the adjustment locking shaft 203 through the notch 205. Through the principle of leverage, the rotating inclined surface 208 drives the air valve plug 104 to open or close; because the outer cylindrical surface of the adjustment locking shaft 203 and the rotating plate 207 are transitionally matched, the friction force provided by them provides a damping torque greater than The air valve plug 104 brings torque to the rotating plate through the rotating inclined surface 208, so that the gas spring can be continuously locked without the need for the brake line 8 to continuously apply force to the rotating plate 207. Compared with the prior art, the problem in the prior art that continuous force needs to be applied to the pull ring to control the locking or opening of the gas spring can keep the gas spring locked or opened is solved. When the force on the pull ring disappears, the gas spring will return to its initial state. This results in the need for at least one hand to operate the pull ring when folding the treadmill, or the need for other people to assist in folding, resulting in inconvenient operation. Technical problems.

[0026] When it is necessary to release the lock of the gas spring, the brake line 8 is pulled again. The brake line 8 fixed at the fixed support 204 is the prior art. Since the brake line 8 in the prior art is provided with a return spring, the return spring is compressed again. When the return spring releases the compressed stored elastic potential energy, the rotating plate 207 is destroyed by the kinetic energy formed under the action of the elastic potential energy. Due to the damping torque provided by the over-match between the outer cylindrical surface of the adjusting locking shaft 203 and the rotating plate 207, the air valve plug 104 is helped to reset, thereby releasing the lock of the gas spring.

[0027] Preferably, Figure 5As shown, the end surface structure of the adjusting locking shaft 203 is shown, and the adjusting locking shaft 203 includes a base plate 20316, the outer circumference of the base plate 20316 is interference fit with the rotating plate 207, and the center of the base plate 20316 is connected to the second rotating shaft 20317 by transition fit, and the second rotating shaft 20317 is fixed to the position of the L-shaped fixing head 202 located on the side of the fixing hole 209; a notch is provided at the lower side of the adjusting locking shaft 203, and the notch includes a first arc cavity 2031 and a second arc cavity; wherein the first arc plate 2032 and the seventh limiting surface 20318 form a first arc cavity 2031; the first limiting surface 2033, the sixth limiting surface 20315, and the fifth limiting surface 2034 form a second arc cavity; a third vertex 2032 is provided on the outer side of the second arc cavity, and a fourth limiting surface 20313 is provided on the outer side of the third vertex 2032, and the fourth limiting surface 20313 is located at the adjusting locking shaft 203 Inside the outer circle range; a first vertex 2036 is provided at the intersection of the first limiting surface 2033 and the seventh limiting surface 20318, a first rotating shaft 2038 is provided below the first vertex 2036, a locking block 2037 is sleeved on the outer cylindrical surface of the first rotating shaft 203, arc edges are provided on both sides of the locking block 2037, the arc edges have the same curvature as the seventh limiting surface 20318, and the width between the connecting lines of the respective vertices of the two arc edges of the locking block 2037 is smaller than the width of the first arc cavity 2031, so that the locking block can slide in the first arc cavity 2031; V-shaped positioning grooves 20310 are provided at both ends of the locking block, and a second vertex 2039 is provided at the intersection of the positioning groove 20310 and the arc, and the preferred second vertex is an arc shape; the locking block 2037 and the first rotating shaft 2038 adopt a clearance fit, so that the locking block 2037 can rotate freely on the outer cylindrical surface of the first rotating shaft 2038; When in use, although the outer cylindrical surface of the adjustment locking shaft 203 is connected with the rotating plate 207 through a transition fit, that is, the outer circumference of the base plate 20316 in the preferred solution is transitionally matched with the rotating plate 207, and the center of the base plate 20316 is connected with the second rotating shaft 20317 by a transition fit, the tolerance of this transition fit is preferably between -0.005mm and +0.005mm, so that a certain friction force can be provided to act as a damping force to prevent the rotating plate from returning to its original position, and the rotating plate can be returned to its original position under the action of the return spring of the brake line 8, so as to ensure that the air valve plug 104 of the gas spring 1 can be opened or closed smoothly; As the number of times of use increases, this tolerance fit will lose the function of providing damping force for limiting as the number of friction increases and increases. For this reason, the present invention provides the following Figure 5 The preferred technical solution shown in FIG. 1 is that when the rotating plate 207 rotates, the base plate 20316 is driven to rotate around the second rotating shaft 20317. Figure 5The position of the middle locking block 2037 is the starting point. When the base plate 20316 rotates counterclockwise around the second rotating shaft 20317, the third vertex 20312 will gradually contact the bottom of the locking block 2037, forming a torque that pushes the locking block 2037 to rotate. At the same time, the first vertex 2036 leaves the V-shaped positioning groove 20310 at the top of the locking block 2037. At this time, after the locking block 2037 rotates counterclockwise into the second arc cavity, the V-shaped positioning groove 20310 at the top of the locking block 2037 enters the space surrounded by the fifth limiting surface and the third vertex 20312. At this time, the locking block 2037 is located in the rotation path of the first arc cavity 2031; when the handle 5 is released, the reset spring of the brake line 8 pushes the rotating plate 207 to drive the base plate 20316 to rotate clockwise. When the third vertex 20312 is located below the locking block 2037, the locking block 2037 will not rotate. As the base plate 20316 rotates, before the third vertex 20312 disengages from below the locking block 2037, the first vertex 2036 rotates to the rotation trajectory of the locking block 2037, thereby blocking the reverse rotation, thereby ensuring that the locking block 2037 smoothly enters the first arc cavity 2031; when the handle 5 is tightened again, the brake line pushes the rotating plate 207 to drive the base plate 20316 to rotate counterclockwise, and when the first vertex 2036 rotates to the top of the V-shaped positioning groove 20310, under the guidance of the third limiting surface 2035, the locking block 2037 rotates counterclockwise under the action of its own gravity, so that the first vertex 2036 enters the V-shaped positioning groove 20310 to form a Figure 5 The locking state shown; when the locking needs to be released, repeat the above steps; The angle C in FIG. 5 is the angle between the second limiting surface 2034 and the bottom of the first arc-shaped cavity 2031, which is used to limit the length of the first arc-shaped cavity 2031. Angle C is preferably 35° to 40°; Angle A is the angle between the second limiting surface 2034 and the line connecting the second rotation axis 20317 and the first rotation axis 2038, which is used to determine the relative position between the first rotation axis 2038 and the second limiting surface 2034, and Angle A is preferably 35° to 40°; Angle B is the angle between the first limiting surface 2033 and the line connecting the second rotation axis 20317 and the first rotation axis 2038, which is used to determine the relative position of the first rotation axis 2038 and the first vertex 2036, and Angle B is preferably 7° to 10°; Angle D is the angle between the line connecting the second rotation axis 20317 and the first rotation axis 2038 and the third vertex 20312 and the second rotation axis 20317, which is used to determine the relative position of the third vertex 20312 and the first rotation axis 2038, and Angle D is preferably 25° to 30°. like Figure 6As shown in the figure, it is a structural principle diagram of a self-locking gas spring; self-locking gas springs are widely used in office chairs and sports equipment. With the help of some release mechanisms, the gas spring can stop at any position in the stroke, and has a large locking force after stopping, which can even reach more than 10000N; when the gas valve plug 104 of the gas valve is pressed downward, the high-pressure inert gas in the second cavity 106 will pass through the gap between the bottom inclined surface of the gas valve plug 104 and the second cavity 106 and enter the low-pressure first cavity 105. Since the bottom of the first cavity 105 is connected to the third cavity 107, the air pressure in the second cavity 106 is reduced, and the inner piston 109 can smoothly realize upward movement under the action of external pressure. The bottom of the inner piston 109 is fixed to the piston cylinder 103, thereby pushing the piston rod 102 and the piston cylinder 103 to connect. When the piston rod 102 is retracted downward, it is shown on the outside that the piston rod 102 retracts downward; when there is no external force, when the valve plug 104 of the air valve is pressed downward, even if the second cavity 106 has the same pressure as the first cavity 105, due to the different force-bearing areas at the top and bottom of the inner piston 109, it can be known from the gas pressure calculation formula that the top pressure of the inner piston 109 is greater than the bottom pressure, so the inner piston 109 will be pushed to move downward, and the bottom of the inner piston 109 is fixed to the piston cylinder 103, thereby pushing the piston rod 102 and the piston cylinder 103 to separate, which is shown on the outside as the piston rod 102 extending upward; in particular, the bottom of the valve plug 104 is a cone, and the conical surface of the cone cooperates with the cavity wall of the second cavity 106 to seal, and a boss is provided on the top of the valve plug 104 to prevent the valve plug 104 from falling into the second cavity 106; like Figure 1 , Figure 3 and Figure 4 As shown, when the handle 5 is tightened or released, the brake line 8 pulls or resets the adjustment locker 2 to control the opening or closing of the air valve at the top of the gas spring 1, that is, to control the opening or closing of the air valve plug 104 of the air valve at the top of the piston rod in the gas spring 1; because the second cavity 106 and the first cavity 105 in the gas spring 1 are enclosed with inert gas, when the air valve plug 104 is opened, when the inclined column 9 rotates around the second hinge 401, the weight of the inclined column 9 is completely borne by the gas spring 1, and the operator only needs to provide the rotation torque. Compared with no gas spring, the operator does not need to bear the gravity of the inclined column 9, so the folding feels smoother and more labor-saving.

[0028] The foregoing has broadly outlined some aspects and features of various embodiments, which should be construed as merely illustrative of various potential applications. Other beneficial results may be obtained by applying the disclosed information in different ways or by combining various aspects of the disclosed embodiments. Other aspects and a more comprehensive understanding may be obtained by reference to the detailed description of the exemplary embodiments in conjunction with the accompanying drawings, within the scope defined by the claims.

[0029] The above embodiments have been described in detail. Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions, reductions, and substitutions made by relevant technicians within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A folding adjustment device for a treadmill, comprising a gas spring, the bottom of which is hinged to the end of the chassis of the treadmill, and the top of which is hinged to the inclined column of the treadmill through an adjustment lock, characterized in that: The adjusting lock is connected to the handle at the top of the inclined column of the treadmill through a brake line, wherein the adjusting lock is provided with a rotating plate hinged to the adjusting lock with a transition fit, one end of the rotating plate is connected to the air valve at the top of the gas spring, and the other end is connected to the brake line; when the handle is tightened or loosened, the brake line pulls or resets the adjusting lock to control the opening or closing of the air valve at the top of the gas spring.

2. A treadmill folding adjustment device according to claim 1, characterized in that: Two gas springs are provided, which are respectively arranged between the oblique columns on both sides of the treadmill chassis and the treadmill chassis. The gas spring is hinged to the treadmill chassis through a first hinge shaft. The other end of the gas spring is connected to an adjustment locker, which is hinged to the middle and upper part of the oblique column through a second hinge shaft.

3. A treadmill folding adjustment device according to claim 2, characterized in that: The adjustment locker comprises an L-shaped fixing head; a connecting hole is arranged at a corner of the L-shaped fixing head, and the connecting hole 201 is matched with a second hinge shaft for being hinged with the inclined column.

4. A treadmill folding adjustment device according to claim 3, characterized in that: A fixing hole is provided at the bottom of the L-shaped fixing head for fixing the piston rod of the gas spring.

5. A treadmill folding adjustment device according to claim 4, characterized in that: An adjusting locking shaft is arranged on the side of the fixing hole of the L-shaped fixing head, and the outer cylindrical surface of the adjusting locking shaft is connected with the rotating plate through transition fit; a rotating inclined surface is arranged at one end of the rotating plate that contacts the air valve plug of the air valve.

6. A treadmill folding adjustment device according to claim 5, characterized in that: The other end of the rotating plate is provided with a notch, in which a brake head of a brake line is clamped.

7. A treadmill folding adjustment device according to any one of claims 1 to 6, characterized in that: The adjustment locker comprises an adjustment locking shaft.

8. The folding adjustment device for a treadmill according to claim 7, characterized in that: The adjusting locking shaft includes a base plate, the outer circumference of the base plate is interference fit with the rotating plate, the center of the base plate is connected to the second rotating shaft by a transition fit, the second rotating shaft is fixed to the position of the L-shaped fixing head on the side of the fixing hole, and a notch is provided at the lower side of the adjusting locking shaft, the notch includes a first arc-shaped cavity and a second arc-shaped cavity; a first vertex is provided at the intersection of the first limiting surface and the seventh limiting surface, and a first rotating shaft is provided below the first vertex, and a locking block is provided on the outer cylindrical surface of the first rotating shaft 203.

9. The folding adjustment device for a treadmill according to claim 8, characterized in that: The first arc plate and the seventh limiting surface form a first arc cavity 2031; the first limiting surface, the sixth limiting surface, and the fifth limiting surface form a second arc cavity; a third vertex is provided on the outside of the second arc cavity, and a fourth limiting surface is provided on the outside of the third vertex, and the fourth limiting surface is located inside the outer circle of the adjusting locking shaft.

10. A treadmill folding adjustment device according to claim 9, characterized in that: The width between the lines connecting the vertices of the two arc sides of the locking block is smaller than the width of the first arc cavity, so that the locking block can slide in the first arc cavity; V-shaped positioning grooves are provided at both ends of the locking block.

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