Treadmill convenient to fold
The design of the screw-in and locking mechanisms enables the treadmill to be completely folded, solving the shortcomings of existing treadmills in terms of space utilization and transportation, and providing a convenient storage and transportation solution.
Patent Information
- Application Number
- CN202511763984.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-01-02
AI Technical Summary
Existing treadmills have significant shortcomings in terms of space utilization and transport, making them difficult to store and move. In particular, completely non-foldable and partially foldable models have failed to completely solve the problems of space occupation and mobility.
The design employs a screw-in mechanism and a locking mechanism, and the treadmill can be fully folded through a hinge structure. The two horizontal arms and two vertical arms can be folded simultaneously, and the vertical arms and the running platform can be folded or unfolded independently. The screw-in mechanism and the locking mechanism enable convenient folding and unfolding.
It achieves maximum space reduction and easy transport of treadmills, meeting the indoor space needs of modern families and improving the convenience and safety of use.
Smart Images
Figure CN121243718A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of fitness equipment, in particular to a treadmill with convenient folding function. BACKGROUND
[0002] As a mainstream aerobic fitness equipment, the popularity of the treadmill is increasing. However, the traditional treadmill has significant defects in structural design, especially in space adaptability, mainly embodied in the following two types.
[0003] The first type is a rigid and completely non-folding treadmill. This type of treadmill is mainly used in commercial fields and household models. The main frame adopts an integrated welding or rigid connection structure and does not have any folding function. The advantage of this design is that the structure is firm and durable, and can withstand high frequency and high intensity use. However, its disadvantages are also very prominent: the volume is large and fixed, and a large amount of indoor space is permanently occupied. For urban family users with limited living space, it not only causes a huge waste of space resources during non-use periods, but also leads to difficulty in moving.
[0004] The second type is a partially folding treadmill that fails to achieve optimal space utilization. To solve the space occupation problem of non-folding treadmills, various partially folding treadmills have appeared on the market. This type of product usually allows the running deck to rotate upwards around a hinge, allowing the running deck and the vertical arm to be folded together, thereby achieving vertical storage. However, this folding method has fundamental limitations. (1) Incomplete folding: this type of folding only reduces the projected area of the treadmill in the plane, but the overall height and thickness are not significantly reduced. After folding, the machine is still a large three-dimensional structure, which is difficult to store in small spaces such as under the bed or in a cabinet. (2) Mobility is still difficult: due to its high center of gravity and large size, the folding process is still laborious and unstable, and there is a risk of tipping over. Even if some products are equipped with rollers, the moving experience is not good due to the limitations of the structural design.
[0005] Neither the completely non-folding model nor the current mainstream partial folding model can fundamentally solve the core user pain point of how to achieve convenient storage and transportation of the treadmill. SUMMARY
[0006] In view of the above problems, the present application provides a treadmill with convenient folding function, which realizes the transformation of the treadmill from a large fixed appliance to a flexible household product, so that it can minimize space occupation when stored and facilitate transportation to meet the indoor space needs of modern families. To this end, the present application adopts the following technical solutions.
[0007] The application discloses a folding treadmill, which comprises a running track, a first vertical arm and a second vertical arm, and a first horizontal arm and a second horizontal arm fixed with each other; the lower end of the first vertical arm is hinged to one side of the running track, and the upper end is hinged to the first horizontal arm; the lower end of the second vertical arm is hinged to the other side of the running track, and the upper end is hinged to the second horizontal arm. The first horizontal arm comprises an upper shell, an inner shell, a lower shell, a movable shell and a rotating plug mechanism; the upper shell and the lower shell are connected with each other to wrap and fix the inner shell; the lower shell has an opening; the movable shell is installed in the opening; the first vertical arm has a clamping mechanism; the rear end of the rotating plug mechanism is placed on the movable shell, the middle segment is hinged to the inner shell, and the front end is inserted into the clamping mechanism to prevent the first horizontal arm from rotating relative to the first vertical arm; the movable shell is pressed to drive the rotating plug mechanism to rotate, so that the front end of the rotating plug mechanism is separated from the clamping mechanism; the first horizontal arm is further rotated to make the first horizontal arm and the first vertical arm parallel to each other; the movable shell is released, the rotating plug mechanism is automatically reset, and the first horizontal arm is further rotated to the original position to make the rotating plug mechanism automatically inserted into the clamping mechanism again. The treadmill further has a locking mechanism, which can prevent the first vertical arm and the second vertical arm from rotating relative to the running track; when the locking mechanism is released, the first vertical arm and the second vertical arm can be rotated to be flush with the side edges of the running track; when the first vertical arm and the second vertical arm are rotated to the original position, the locking mechanism is reset to prevent the first vertical arm and the second vertical arm from rotating relative to the running track again.
[0008] By adopting the technical scheme, since the two horizontal arms are fixed with each other, the two horizontal arms are synchronously moved, and the first vertical arm and the second vertical arm connected with the two horizontal arms and the running track are synchronously moved. When the treadmill is folded, the movable shell is gripped upwards to drive the rotating plug mechanism to rotate, so that the front end of the rotating plug mechanism is separated from the clamping mechanism, and the first horizontal arm is further rotated to make the first horizontal arm and the first vertical arm parallel to each other, that is, the first step of folding the two horizontal arms relative to the two vertical arms is realized; then the locking mechanism is released, and the two vertical arms are rotated to be flush with the side edges of the running track, that is, the second step of folding the two vertical arms relative to the running track is realized. The structure of the treadmill can be completely folded, and the folding is convenient, and the treadmill is convenient to store and carry.
[0009] A preferred solution of the conveniently foldable treadmill is that the rotating and inserting mechanism comprises a rear handle, a connecting handle, a pin, a guide assembly and a first spring; a middle section of the rear handle is hingedly connected to the inner shell; a rear end of the rear handle is placed on the movable shell; a front end of the rear handle is hingedly connected to a rear end of the connecting handle, and a front end of the connecting handle is hingedly connected to a rear end of the pin, so that the rear handle can rotate in a vertical plane relative to the connecting handle, and the connecting handle can rotate in a vertical plane relative to the pin; the guide assembly is fixed to the inner shell; the pin passes through the guide assembly; the first spring is arranged on an outer periphery of the pin and is wrapped by the guide assembly, and the guide assembly and the pin jointly limit two ends of the first spring. In one state, the first spring naturally extends to push the pin to be inserted into the clamping mechanism to prevent the first horizontal arm from rotating relative to the first vertical arm; pressing the movable shell can make the rear handle rotate in a vertical plane to pull the pin out of the clamping mechanism, so that the first horizontal arm can rotate relative to the first vertical arm.
[0010] By adopting the above technical solution, pressing the movable shell can lift the rear end of the rear handle to make the rear handle rotate, obliquely pull the connecting handle downward, pull the pin out of the clamping mechanism, and then rotate the first horizontal arm to fold the first horizontal arm and the first vertical arm relative to each other.
[0011] A preferred solution of the conveniently foldable treadmill is that the pin has a thin section and a thick section connected to each other; the thin section is hingedly connected to the connecting handle. The guide assembly comprises a sleeve fixed to the inner shell; the sleeve has a main sleeve and a necked ring; the necked ring is connected to one end of the main sleeve, and an inner diameter of the necked ring is smaller than an inner diameter of the main sleeve; the thin section passes through the necked ring, and at least a part of the thick section is embedded in the main sleeve. The first spring is arranged outside the thin section, one end of the first spring abuts against the necked ring, and the other end abuts against an end face of the thick section; pressing the movable shell can pull the thick section to move backward to be out of the clamping mechanism, and the first spring is compressed; releasing the movable shell can make the first spring extend to make the thick section move forward; under the limitation of the sleeve, the thick section always moves along an axis of the sleeve.
[0012] By adopting the above technical solution, the thick section only performs linear motion, and under the action of the first spring, the thick section can be accurately reset to be inserted into or out of the clamping mechanism.
[0013] A preferred scheme of the conveniently foldable treadmill is that the lower part of the front end of the rough section has a smooth notch surface; the first vertical arm further comprises a vertical shell; the inner shell is hinged to the vertical shell; the clamping mechanism comprises a multi-panel, a blocking column and a guide plate; the multi-panel is fixed on the vertical shell; the multi-panel is provided with a insertion hole; the blocking column is fixed on the multi-panel and located below the shaft sleeve; the guide plate is fixed to the front side of the multi-panel and allows the insertion hole; the guide plate has an inclined surface and a smooth curved surface located above the rear side of the insertion hole; the smooth curved surface smoothly guides the inclined surface upward and the rear side of the insertion hole downward. During the rotation of the first horizontal arm to insert the insertion pin into the insertion hole, the smooth notch surface is sequentially smoothly abutted with the inclined surface and the smooth curved surface, the first spring is compressed, when the shaft sleeve abuts with the blocking column, the insertion pin is opposite to the insertion hole, the first spring is stretched, the insertion pin is pushed into the insertion hole, thereby preventing the rotation of the first horizontal arm relative to the first vertical arm.
[0014] By adopting the above technical scheme, when the first horizontal arm is reset to the use state, the movable shell does not need to be pressed, only the first horizontal arm needs to be rotated, the insertion pin can be smoothly inserted into the insertion hole, and the reset is realized.
[0015] A preferred scheme of the conveniently foldable treadmill is that the guiding assembly further comprises a vertical plate; the vertical plate is fixed to the inner shell; the shaft sleeve passes through the vertical plate and is fixed to the vertical plate; the vertical plate has a square upper part and an arc-shaped lower part which is contracted downward from the square upper part; the multi-panel comprises two parallel and opposite clamping plates, and the distance between the two clamping plates is 0.1-1mm larger than the width of the square upper part. During the rotation of the first horizontal arm to insert the insertion pin into the insertion hole, the arc-shaped lower part first enters between the two clamping plates, and then the square upper part enters between the two clamping plates.
[0016] By adopting the above technical scheme, the two clamping plates limit the rotation of the vertical plate, that is, the insertion pin is accurately aligned with the insertion hole.
[0017] A preferred solution of the conveniently foldable treadmill is that the first vertical arm or the second vertical arm is fixed with a rotating shaft, and the rotating shaft is rotationally connected to the running track. The locking mechanism comprises a second spring, a handle, a pin and a toothed plate. The middle part of the handle is hingedly connected to the running track. The pin is connected to the front end of the handle. The two ends of the second spring are respectively connected to the rear end of the handle and the running track. The toothed plate is fixed on the rotating shaft. The toothed plate has front teeth, middle teeth and rear teeth. The first arc-shaped slot is between the middle teeth and the rear teeth. The second arc-shaped slot is between the front teeth and the middle teeth. In one state, the pin is embedded in the first arc-shaped slot to prevent the first vertical arm and the second vertical arm from rotating relative to the running track. The upper end of the middle teeth inclines to the rear teeth, so that the middle teeth and the rear teeth clamp the pin, and the middle teeth have a circular arc top surface which smoothly extends from the bottom of the second arc-shaped slot to the upper part of the first arc-shaped slot. The treadmill further comprises a foot pedal. The foot pedal is connected to the rear end of the handle. When the foot pedal is stepped on, the handle rotates, the second spring is stretched, the pin is separated from the first arc-shaped slot, the first vertical arm and the second vertical arm are rotated to be flush with the side edges of the running track, the foot pedal is released, the spring contracts to drive the handle to rotate, so that the pin is embedded in the second arc-shaped slot. When the first vertical arm and the second vertical arm are rotated again, the pin in the second arc-shaped slot slides along the circular arc top surface relative to the first arc-shaped slot, and finally is embedded in the first arc-shaped slot to prevent the first vertical arm and the second vertical arm from rotating relative to the running track.
[0018] By adopting the above technical solution, the locking mechanism can prevent the vertical arm from rotating relative to the running track by embedding the pin in the first arc-shaped slot. At this time, it is in the unfolded use state. By stepping on the foot pedal and rotating the first vertical arm and the second vertical arm, the pin can be embedded in the second arc-shaped slot. At this time, it is in the folded non-use state. The process of changing the folded non-use state to the unfolded use state does not need to operate the foot pedal. It can be completed only by rotating the first vertical arm and the second vertical arm. The locking mechanism can automatically reset, which is convenient to use.
[0019] A preferred solution of the conveniently foldable treadmill is that the first vertical arm and the second vertical arm are respectively fixed with a rotating shaft, and each rotating shaft is rotationally connected to the side edge of the running track. The treadmill comprises two groups of the locking mechanism which are symmetrically installed on the two sides of the running track and the two rotating shafts. A connecting shaft is fixedly connected to the middle parts of the two handles of the two groups of the locking mechanism. The connecting shaft is rotationally installed in the running track.
[0020] By adopting the above technical solution, the middle parts of the two handles are hingedly connected to the running track through the connecting shaft. The two sides are locked by the locking mechanism, which improves the stability and cooperative operation of the two vertical arms.
[0021] A preferred solution of the conveniently foldable treadmill is that the treadmill further comprises a stopper fixed to the side of the running track and located in front of the rotating shaft. The toothed plate has a transition arc segment and a circular arc segment with smooth connection between the front tooth and the rear tooth on the side opposite to the middle tooth, the transition arc segment is connected to one end of the circular arc segment and has the same width as the circular arc segment, and the width of the transition arc segment gradually increases from the end connected to the circular arc segment to the end connected to the front tooth. During the rotation of the first vertical arm and the second vertical arm relative to the running track, the stopper abuts against the middle position of the transition arc segment when the catch is embedded in the first arc-shaped slot, and the stopper is spaced against the circular arc segment when the catch enters the second arc-shaped slot.
[0022] By adopting the above technical solution, when the first vertical arm and the second vertical arm are unfolded, the foot presses the foot pedal, and the catch may be completely separated from the range of the toothed plate due to excessive force, at which time the locking mechanism cannot limit the rotation angle of the vertical arm forward, and at this time the stopper can block the toothed plate so that the vertical arm will not rotate excessively. When the toothed plate abuts against the stopper, the foot pedal is released, so that the catch is embedded in the first arc-shaped slot to prevent the rotation of the vertical arm relative to the running track forward or backward, and the use is fixed.
[0023] In summary, the conveniently foldable treadmill has the following beneficial effects: two horizontal arms and two vertical arms are hinged, and the first horizontal arm and the first vertical arm further have a rotating and inserting mechanism and a locking mechanism to realize mutual locking or release, so that the two horizontal arms can be unfolded relative to the two vertical arms for use, and the two horizontal arms can also be folded relative to the two vertical arms for storage; since the two vertical arms are hinged to the running track, and the locking mechanism is arranged between at least one vertical arm and the running track, the two vertical arms can be unfolded relative to the running track for use, and the two vertical arms can also be folded relative to the running track for storage, which is convenient to fold. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is an appearance view of a conveniently foldable treadmill.
[0025] Figure 2 It is a structure view of the upper shell, the lower shell and part of the shell of the first vertical arm hidden behind the conveniently foldable treadmill of Figure 1
[0026] It is an enlarged view of area A of the conveniently foldable treadmill of Figure 2
[0027] It is an exploded view of the upper shell, the lower shell, the inner shell and the movable shell of the conveniently foldable treadmill.
[0028] Figure 5 It is a second perspective view of the conveniently foldable treadmill of Figure 4
[0029] It is a second perspective view of the conveniently foldable treadmill of
[0029] Figure 6 is a third perspective view of Figure 4
[0030] Figure 7 is a connection view of the movable shell, the rotating plug mechanism and the locking mechanism between the inner shell and the lower shell.
[0031] Figure 8 is a second perspective view of Figure 7 cut along the section line
[0032] Figure 9 is a third perspective view of Figure 7
[0033] Figure 10 is another perspective view of Figure 1
[0034] Figure 11 is a structure view of the front end part of the shell body after hiding the second vertical arm and the running track. Figure 10
[0035] Figure 12 is an enlarged view of the B area of Figure 11
[0036] Figure 13 is a second perspective view of Figure 11 cut along the section line
[0037] Figure 14 is an enlarged view of the C area of Figure 13
[0038] Figure 15 is a third perspective view of the side edge shell body of the running track after hiding. Figure 11
[0039] Reference: 1, running track; 2, first vertical arm; 3, second vertical arm; 4, first horizontal arm; 5, second horizontal arm; 41, upper shell; 42, inner shell; 43, lower shell; 44, movable shell; 45, rotating plug mechanism; 411, extension piece; 431, rib; 432, U-shaped rib; 433, half ring wall; 434, half circle piece; 435, L-shaped notch; 436, vertical column; 437, opening; 438, cylindrical block; 442, cylindrical hole; 421, clearance; 451, rear handle; 452, connecting handle; 453, latch; 454, guide assembly; 455, first spring; 441, convex column; 4531, thin section; 4532, thick section; 4541, shaft sleeve; 4542, vertical plate; 4543, square box; 45421, square upper part; 45422, arc-shaped lower part; 45411, main sleeve; 45412, necked ring; 6, hinge point; 21, clamping mechanism; 211, multi-surface plate; 212, blocking column; 213, guide plate; 2111, front surface plate; 2112, clamping plate; 2113, bottom surface plate; 21111, through hole; 2131, inclined surface; 2132, smooth curved surface; 45321, smooth notch surface; 7, rotating shaft; 8, locking mechanism; 81, second spring; 82, rotating handle; 83, latch; 84, toothed plate; 85, connecting shaft; 841, front tooth; 842, middle tooth; 843, rear tooth; 844, first arc-shaped groove; 845, second arc-shaped groove; 8421, circular arc-shaped top surface; 86, foot pedal; 9, blocking nail; 846, transition arc section; 847, circular arc section; 10, telescopic leg; 11, base; 12, electric motor; 13, belt; 14, front roller; 15, rear roller; 16, pedal; 17, running belt. DETAILED DESCRIPTION
[0040] The technical solutions in the embodiments are described below clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the following embodiments, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0041] As Figure 1 A folding running machine includes a running track 1, first and second vertical arms 2 and 3, and first and second horizontal arms 4 and 5 fixed to each other. The first and second vertical arms 2 and 3 are parallel to each other. The lower end of the first vertical arm 2 is hingedly connected to one side of the running track 1, and the upper end is hingedly connected to the first horizontal arm 4. The lower end of the second vertical arm 3 is hingedly connected to the other side of the running track 1, and the upper end is hingedly connected to the second horizontal arm 5. The above connection structure allows the two horizontal arms to rotate synchronously relative to the two vertical arms, and the two vertical arms to rotate synchronously relative to the running track 1.
[0042] The first vertical arm 2 and the running track 1 form an acute angle in the fixed state, and the first vertical arm 2 and the first horizontal arm 4 form an acute angle.
[0043] As Figure 2 and Figure 3 The first horizontal arm 4 has an upper shell 41, an inner shell 42, a lower shell 43, a movable shell 44 and a rotating plug mechanism 45. Figure 4 、 Figure 5 and Figure 6 The lower edge of the upper shell 41 has a plurality of extension pieces 411, and the inner wall of the lower shell 43 has a plurality of rib pieces 431. When the upper shell 41 and the lower shell 43 are butted, all the extension pieces 411 of the lower edge of the upper shell 41 are inserted into the lower shell 43, and the rib pieces 431 of the lower shell 43 are inserted into the gap between two adjacent extension pieces 411, so that the two adjacent extension pieces 411 hold one rib piece 431, and the holding static friction force realizes the fixation between the upper shell 41 and the lower shell 43. The inner shell 42 is installed in the upper shell 41 and the lower shell 43, and the inner wall of the upper shell 41 is attached to the upper surface and the two side surfaces of the inner shell 42, and the lower surface of the inner shell 42 is abutted on the U-shaped rib 432 of the lower shell 43, realizing the limiting of the four side surfaces of the inner shell 42.
[0044] As Figure 5 In the first horizontal arm 4, the rear end of the lower shell 43 is internally fixed with a semicircular arch, which includes an integral semicircular wall 433 and a semicircular piece 434, and the arc edge of the semicircular piece 434 is connected to the upright semicircular wall 433 along the lower edge, and the lower edge of the semicircular wall 433 is fixed to the inner wall of the lower shell 43. In the middle position of the connecting arc of the semicircular piece 434 connecting the semicircular wall 433, the semicircular arch has an L-shaped notch 435 extending from the semicircular piece 434 to the semicircular wall 433. A stand 436 is fixed on the semicircular piece 434, and the rear end of the inner shell 42 is fixed on the stand 436, realizing the end fixation of the inner shell 42, and thus realizing the overall fixation between the inner shell 42 and the upper shell 41 and the lower shell 43.
[0045] As Figure 6 In the first horizontal arm 4, the rear end of the lower shell 43 is internally fixed with a semicircular arch, which includes an integral semicircular wall 433 and a semicircular piece 434, and the arc edge of the semicircular piece 434 is connected to the upright semicircular wall 433 along the lower edge, and the lower edge of the semicircular wall 433 is fixed to the inner wall of the lower shell 43. In the middle position of the connecting arc of the semicircular piece 434 connecting the semicircular wall 433, the semicircular arch has an L-shaped notch 435 extending from the semicircular piece 434 to the semicircular wall 433. A stand 436 is fixed on the semicircular piece 434, and the rear end of the inner shell 42 is fixed on the stand 436, realizing the end fixation of the inner shell 42, and thus realizing the overall fixation between the inner shell 42 and the upper shell 41 and the lower shell 43.
[0046] The rotating inserting mechanism 45 is integrally installed in the lower shell 43, below the inner shell 42, and the inner shell 42 is provided with a clearance 421 facing the rotating inserting mechanism 45.
[0047] As shown in Figure 7 , the rotating inserting mechanism 45 comprises a rear handle 451, a connecting handle 452, a plug 453, a guide assembly 454 and a first spring 455. The middle part of the rear handle 451 is hinged to the inner shell 42, the inner surface of the movable shell 44 is provided with a fixed protrusion 441, the rear end of the rear handle 451 is latched on the protrusion 441, and the front end of the rear handle 451 is hinged to the rear end of the connecting handle 452, and the front end of the connecting handle 452 is hinged to the rear end of the plug 453. Both hinges allow the rear handle 451 to rotate in the vertical plane relative to the connecting handle 452, and the connecting handle 452 to rotate in the vertical plane relative to the plug 453.
[0048] As shown in Figure 8 , the plug 453 is divided into a thin section 4531 and a thick section 4532, which are relative, that is, the diameter of the thin section 4531 is smaller than that of the thick section 4532. The connecting handle 452 is hinged to the thin section 4531, and the thin section 4531 and the thick section 4532 are integrally connected.
[0049] It should be noted that the middle part in the present application is not necessarily an absolute middle part, but refers to a part between the two ends.
[0050] The guide assembly 454 comprises a shaft sleeve 4541, a vertical plate 4542 and a square box 4543. The upper end of the vertical plate 4542 is fixed in the inner shell 42. The vertical plate 4542 has a square upper part 45421 and an arc-shaped lower part 45422 which gradually shrinks downward from the square upper part 45421. The vertical plate 4542 has a circular hole, part of which is located in the square upper part 45421 and part of which is located in the arc-shaped lower part 45422. The shaft sleeve 4541 passes through the circular hole and is fixed to the side wall of the circular hole, that is, the shaft sleeve 4541 is fixed vertically to the vertical plate 4542. The side surface of the square box 4543 is fixed to the vertical plate 4542, and the lower surface is fixed to the shaft sleeve 4541. The square box 4543 is provided to make the position of the shaft sleeve 4541 more stable and not easy to tilt relative to the vertical plate 4542 after long-term use. The shaft sleeve 4541 comprises a main sleeve 45411 and a necked ring 45412. The necked ring 45412 is fixed to one end of the main sleeve 45411, and the inner diameter of the necked ring 45412 is smaller than that of the main sleeve 45411. The thin section 4531 of the plug 453 passes through the necked ring 45412, and the thick section 4532 is adapted to slide in the main sleeve 45411, that is, the outer diameter of the thick section 4532 is equal to the inner diameter of the main sleeve 45411. The first spring 455 is sleeved outside the thin section 4531 and located in the main sleeve 45411, and the two ends of the first spring 455 abut on the end surface of the necked ring 45412 and the thick section 4532.
[0051] The first vertical arm 2 is provided with a clamping mechanism 21 and a rotating mechanism 45. When the treadmill is in the initial state, a part of the thick section 4532 is inserted into the clamping mechanism 21 and the other part of the thick section 4532 is located in the main sleeve 45411, which prevents the first horizontal arm 4 from rotating relative to the first vertical arm 2. If the first horizontal arm 4 is to be folded, the rear end of the movable shell 44 is pressed upward, which lifts the rear end of the rear handle 451, and the rear handle 451 rotates. The front end of the rear handle 451 moves obliquely downward, pulls the connecting handle 452 obliquely backward, and drags the pin 453 to move backward to disengage the clamping mechanism 21, so that the first horizontal arm 4 can rotate relative to the first vertical arm 2.
[0052] The hinge point 6 of the first horizontal arm 4 and the first vertical arm 2 is located in front of the pin 453 and is hinged by the inner shell 42 and the first vertical arm 2. When the first horizontal arm 4 is rotated, the second horizontal arm 5 is synchronized to rotate with the first horizontal arm 4.
[0053] As Figure 9 The clamping mechanism 21 includes a multi-panel 211, a blocking column 212, and a guide plate 213. The multi-panel 211 includes a front panel 2111, two parallel and opposite clamping panels 2112, and a bottom panel 2113. The two clamping panels 2112 are connected vertically to the two sides of the front panel 2111, and the bottom panel 2113 is connected vertically to the bottom of the front panel 2111 and is located between the two clamping panels 2112. The blocking column 212 is fixed on the bottom panel 2113. The first vertical arm 2 includes a vertical shell. The bottom panel 2113 and the two clamping panels 2112 are fixed to the vertical shell. The guide plate 213 is fixed to the front panel 2111 and the main body of the guide plate 213 is located on the front side of the front panel 2111.
[0054] The front panel 2111 is provided with a through hole 21111, and the guide plate 213 is located in the through hole 21111. The guide plate 213 has an inclined surface 2131 and a smooth curved surface 2132 located above the front panel 2111, and the inclined surface 2131 is smoothly connected to the smooth curved surface 2132. The smooth curved surface 2132 is smoothly guided to the rear side of the front panel 2111, i.e., to the rear side of the through hole 21111.
[0055] When the treadmill is in the usable state, a small part of the front of the pin 453 passes through the through hole 21111, thereby preventing the first horizontal arm 4 from rotating relative to the first vertical arm 2.
[0056] If the first horizontal arm 4 is to be folded, the movable shell 44 can be pressed, the rear end of the movable shell 44 is lifted upward, the movable shell 44 rotates relative to the lower shell 43, the rear end of the rear handle 451 is lifted upward, the rear handle 451 rotates, the front end of the rear handle 451 rotates obliquely downward, the connecting handle 452 changes to an obliquely downward direction, the plug 453 is gradually pulled out and separated from the perforation 21111, the first spring 455 in this process is compressed, then the first horizontal arm 4 is rotated and the movable shell 44 is released, and finally the first horizontal arm 4 can be parallel to the first vertical arm 2, at the same time the first spring 455 is stretched, the rear handle 451, the connecting handle 452 and the plug 453 are straightened, that is, the rotating and inserting mechanism 45 is automatically reset.
[0057] To reset the first horizontal arm 4, that is, to rotate the first horizontal arm 4 to the usable state of the treadmill, the movable shell 44 does not need to be pressed, and the first horizontal arm 4 is directly rotated, then the plug 453 first abuts against the inclined surface 2131 of the guide plate 213, then abuts against the smooth curved surface 2132, and then slides into the rear side of the front panel 2111, in this process the first spring 455 is compressed, until the shaft sleeve 4541 abuts against the gear column 212, at this time the plug 453 is aligned with the perforation 21111, the first spring 455 rebounds and pushes the front end of the plug 453 into the perforation 21111, thereby relatively fixing the first horizontal arm 4 and the first vertical arm 2. In order to make the process of resetting the first horizontal arm 4 more smooth, the plug 453 is provided with a smooth notch surface 45321 at the lower front end of the thick section 4532, which can be an inclined surface 2131, so that during the resetting process, the smooth notch surface 45321 abuts against the inclined surface 2131 and the smooth curved surface 2132, making the sliding of the plug 453 more smooth.
[0058] In order to make the plug 453 more accurately aligned with the perforation 21111 during the resetting process of the first horizontal arm 4, the plug 453 needs to be limited left and right, the distance between the two clamping plates 2112 of the multi-panel 211 is 0.1-1mm larger than the width of the square upper part 45421 of the vertical plate 4542, that is, the distance between the two clamping plates 2112 is slightly larger than the width of the square upper part 45421 of the vertical plate 4542. During the resetting process of the first horizontal arm 4, the arc-shaped lower part 45422 of the vertical plate 4542 first enters between the two parallel and opposite clamping plates 2112 of the multi-panel 211, then the square upper part 45421 of the vertical plate 4542 enters between the two clamping plates 2112, so that the plug 453 can be accurately limited and aligned with the perforation 21111 of the front panel 2111 each time.
[0059] It should be noted that during the above rotating process of the first horizontal arm 4 relative to the first vertical arm 2, the second horizontal arm 5 and the first horizontal arm 4 rotate synchronously.
[0060] The second cross arm 5 has no movable shell 44 and rotating plug mechanism 45, but has upper shell 41, inner shell 42 and lower shell 43, the upper shell 41 and lower shell 43 are connected to each other to wrap the fixed inner shell 42. The hinge of the second cross arm 5 and the second upright arm 3 is that the inner shell 42 of the second cross arm 5 is hinged with the second upright arm 3.
[0061] The hinge structure between the upright arm and the running track 1 is described below.
[0062] As shown in Figure 10 and Figure 11 , the first upright arm 2 is hinged to one side of the running track 1 through a rotating shaft 7, the rotating shaft 7 is fixed to the first upright arm 2, and the rotating shaft 7 is rotationally connected to the running track 1.
[0063] The second upright arm 3 is hinged to one side of the running track 1 through a rotating shaft 7, the rotating shaft 7 is fixed to the second upright arm 3, and the rotating shaft 7 is rotationally connected to the running track 1.
[0064] As shown in Figure 12 , the locking mechanism 8 is symmetrically installed on both sides of the running track 1. The locking mechanism 8 includes a second spring 81, a handle 82, a pin 83 and a toothed plate 84. A connecting shaft 85 passes through both sides of the running track 1, and the connecting shaft 85 is rotatably installed in the running track 1. The middle part of the handle 82 on each side is fixed to the connecting shaft 85. The pin 83 is fixed vertically at the front end of the handle 82. The lower end of the second spring 81 is connected to the rear end of the handle 82, and the upper end of the second spring 81 is fixed to the running track 1.
[0065] As shown in Figure 13 and Figure 14 , the toothed plate 84 is fixed to the rotating shaft 7. The toothed plate 84 has a front tooth 841, a middle tooth 842 and a rear tooth 843. The first arc-shaped groove 844 is between the middle tooth 842 and the rear tooth 843, and the second arc-shaped groove 845 is between the front tooth 841 and the middle tooth 842.
[0066] When the running machine is in a usable state, the pin 83 is embedded in the first arc-shaped groove 844, preventing the upright arm from rotating relative to the running track 1.
[0067] The upper end of the middle tooth 842 is inclined to the rear tooth 843, so that the relative contact between the middle tooth 842 and the rear tooth 843 is close to parallel surfaces to clamp the pin 83, which can also block the pin 83 from being disengaged upward.
[0068] The middle tooth 842 has a circular arc top surface 8421, which smoothly extends from the bottom of the second arc-shaped groove 845 to the upper part of the first arc-shaped groove 844.
[0069] The treadmill further sets a foot pedal 86 on the side where the second upright arm 3 is located, which is rod-shaped. The foot pedal 86 is vertically fixed at the rear end of the handle 82. When the foot pedal 86 is stepped on, the handle 82 rotates, the second spring 81 is stretched, and the catch pin 83 is disengaged from the first arc-shaped slot 844. At this time, the second upright arm 3 can be selected to be folded to the side of the running track 1, and at this time, the catch pin 83 is embedded in the second arc-shaped slot 845.
[0070] When the second upright arm 3 is converted from the folded state to the unfolded state that can be used, the foot pedal 86 does not need to be stepped on, and only the second upright arm 3 needs to be manually rotated. Since the middle tooth 842 has a circular arc-shaped top surface 8421, the catch pin 83 can automatically slide relatively backward along the circular arc-shaped top surface 8421 and be embedded in the first arc-shaped slot 844.
[0071] It should be noted that when the second upright arm 3 is rotated, the first upright arm 2 is synchronously rotated with the second upright arm 3.
[0072] In order to further prevent the catch pin 83 from being disengaged when it is embedded in the first arc-shaped slot 844, and in order to prevent excessive rotation of the second upright arm 3 when the foot pedal 86 is stepped on too hard, the catch pin 83 loses the clamping position limit and can rotate forward excessively, the treadmill further installs a stop pin 9, which is fixed on the side of the running track 1 and located on the front side of the rotating shaft 7.
[0073] On the side of the tooth plate 84 facing away from the middle tooth 842, between the front tooth 841 and the rear tooth 843, there is a transition arc segment 846 and a circular arc segment 847 that are smoothly connected. The transition arc segment 846 connects one end of the circular arc segment 847 and has the same width as the circular arc segment 847. The width of the transition arc segment 846 gradually increases from the end connected to the circular arc segment 847 to the end connected to the front tooth 841.
[0074] When the second upright arm 3 is against the side edge of the running track 1, the catch pin 83 enters the second arc-shaped slot 845, and the stop pin 9 is spaced against the circular arc segment 847. During the upward rotation of the second upright arm 3: when the stop pin 9 abuts against the middle position of the transition arc segment 846, i.e., the middle width position of the transition arc segment, since the width behind the transition arc segment continues to increase in the rotation direction, and the stop pin 9 has already abutted against the transition arc segment 846 at this time, the tooth plate 84 cannot continue to rotate forward, so that the second upright arm 3 cannot continue to rotate forward, thereby preventing the second upright arm 3 from rotating forward excessively, and at this time, the catch pin 83 is directly opposite the first arc-shaped slot 844, so that the catch pin 83 can be embedded in the first arc-shaped slot 844, and since the second upright arm 3 cannot rotate forward, the catch pin 83 is not easy to disengage from the first arc-shaped slot 844.
[0075] As shown in Figure 15 , the front end of the running track 1 further installs two telescopic legs 10. The two telescopic legs 10 can be pulled out upward, and then the front side of the running track 1 is downward, and the two legs are supported on the ground. The folded treadmill can be placed vertically on the ground.
[0076] The treadmill 1 comprises a base 11, an electric motor 12, a belt 13, a front roller 14, a rear roller 15, a treadle 16 and a running belt 17. The electric motor 12, the front roller 14, the rear roller 15 and the treadle 16 are mounted on the base 11, and the treadle 16 is located between the front roller 14 and the rear roller 15. The belt 13 connects the output shaft of the electric motor 12 and the front roller 14, the running belt 17 is sleeved on the front roller 14 and the rear roller 15, and the treadle 16 is supported below the upper half of the running belt 17. When the electric motor 12 is started, the front roller 14 is driven to rotate through the belt 13, and the running belt 17 is driven to perform a rotary motion, so that a running motion can be performed on the running belt 17.
[0077] The treadmill of the present application can fold the two cross arms parallel to the two vertical arms, and the two vertical arms can be folded against the two sides of the running belt 1, which is convenient for folding, storage and transportation.
[0078] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A foldable treadmill, characterized in that, It includes a running platform (1), a first vertical arm (2) and a second vertical arm (3), and a first horizontal arm (4) and a second horizontal arm (5) fixed to each other; the lower end of the first vertical arm (2) is hinged to one side of the running platform (1), and the upper end is hinged to the first horizontal arm (4); the lower end of the second vertical arm (3) is hinged to the other side of the running platform (1), and the upper end is hinged to the second horizontal arm (5). The first horizontal arm (4) includes an upper shell (41), an inner shell (42), a lower shell (43), a movable shell (44), and a screw-in mechanism (45); the upper shell (41) and the lower shell (43) are connected to each other to wrap and fix the inner shell (42); the lower shell (43) has an opening (437); the movable shell (44) is installed in the opening (437); the first vertical arm (2) has a locking mechanism (21); the rear end of the screw-in mechanism (45) rests on the movable shell (44), the middle section is hinged to the inner shell (42), and the front end is inserted into the locking mechanism. (21) and prevent the first horizontal arm (4) from rotating relative to the first vertical arm (2); press the movable shell (44) to drive the screw insertion mechanism (45) to rotate, so that the front end of the screw insertion mechanism (45) disengages from the locking mechanism (21), and then rotate the first horizontal arm (4) so that the first horizontal arm (4) and the first vertical arm (2) are parallel to each other. Release the movable shell (44), and the screw insertion mechanism (45) automatically resets. Then rotate the first horizontal arm (4) to the original position so that the screw insertion mechanism (45) automatically re-inserts into the locking mechanism (21). The treadmill also has a locking mechanism (8), which prevents the first upright arm (2) and the second upright arm (3) from rotating relative to the running platform (1). When the locking mechanism (8) is released, the first upright arm (2) and the second upright arm (3) can be rotated to be flush with the side of the running platform (1). When the first upright arm (2) and the second upright arm (3) are rotated back to their original positions, the locking mechanism (8) is reset and prevents the first upright arm (2) and the second upright arm (3) from rotating relative to the running platform (1) again.
2. The foldable treadmill according to claim 1, characterized in that, The screw-in mechanism (45) includes a rear handle (451), a connecting handle (452), a pin (453), a guide assembly (454), and a first spring (455); the middle section of the rear handle (451) is hinged to the inner shell (42); the rear end of the rear handle (451) rests on the movable shell (44); the front end of the rear handle (451) is hinged to the rear end of the connecting handle (452), and the front end of the connecting handle (452) is hinged to the rear end of the pin (453), so that the rear handle (451) can be relative to the connecting handle (452). The handle (452) rotates in the vertical plane, and the connecting handle (452) can rotate in the vertical plane relative to the pin (453); the guide assembly (454) is fixed to the inner shell (42); the pin (453) passes through the guide assembly (454); the first spring (455) is disposed on the outer periphery of the pin (453) and is wrapped by the guide assembly (454), and the guide assembly (454) and the pin (453) together limit the two ends of the first spring (455); In one state, the first spring (455) naturally extends and pushes the pin (453) into the locking mechanism (21), preventing the first horizontal arm (4) from rotating relative to the first vertical arm (2); pressing the movable shell (44) causes the rear handle (451) to rotate in the vertical plane, thereby pulling the pin (453) away from the locking mechanism (21), so that the first horizontal arm (4) can rotate relative to the first vertical arm (2).
3. The foldable treadmill according to claim 2, characterized in that, The pin (453) has a thin section (4531) and a thick section (4532) connected to each other; the thin section (4531) is hinged to the connecting handle (452). The guide assembly (454) includes a bushing (4541) fixed to the inner shell (42); the bushing (4541) has a main sleeve (45411) and a constriction ring (45412); the constriction ring (45412) is connected to one end of the main sleeve (45411), and the inner diameter of the constriction ring (45412) is smaller than the inner diameter of the main sleeve (45411); the thin segment (4531) passes through the constriction ring (45412), and at least a portion of the thick segment (4532) is embedded in the main sleeve (45411); The first spring (455) is sleeved outside the thin section (4531). One end of the first spring (455) abuts against the constriction ring (45412), and the other end abuts against the end face of the thick section (4532). Pressing the movable shell (44) can pull the thick section (4532) backward and disengage it from the locking mechanism (21), and the first spring (455) is compressed. Releasing the movable shell (44) will cause the first spring (455) to extend, allowing the thick section (4532) to move forward. Under the limitation of the bushing (4541), the thick section (4532) always moves along the axis of the bushing (4541).
4. The foldable treadmill according to claim 3, characterized in that, The lower front end of the thick section (4532) has a smooth notch surface (45321); the first upright arm (2) also includes an upright shell; the inner shell (42) is hinged to the upright shell; the locking mechanism (21) includes a multi-panel (211), a stop post (212), and a guide plate (213); the multi-panel (211) is fixed on the upright shell; the multi-panel (211) has an insertion hole; The stop post (212) is fixed on the multi-panel (211) and located below the bushing (4541); the guide plate (213) is fixed to the front side of the multi-panel (211) to make way for the insertion hole; the guide plate (213) has an inclined surface (2131) and a smooth curved surface (2132) located above the rear side of the insertion hole; the smooth curved surface (2132) smoothly guides the inclined surface (2131) upward and smoothly guides the rear side of the insertion hole downward; During the process of rotating the first horizontal arm (4) to insert the pin (453) into the socket, the smooth notch surface (45321) smoothly abuts against the inclined surface (2131) and the smooth curved surface (2132) in sequence, the first spring (455) is compressed, and when the bushing (4541) abuts against the stop post (212), the pin (453) is facing the socket, the first spring (455) extends, and pushes the pin (453) into the socket, thereby preventing the first horizontal arm (4) from rotating relative to the first vertical arm (2).
5. The foldable treadmill according to claim 4, characterized in that, The guide assembly (454) further includes a vertical plate (4542); the vertical plate (4542) is fixed to the inner shell (42); the bushing (4541) passes through the vertical plate (4542) and is fixed to the vertical plate (4542); the vertical plate (4542) has a square upper part (45421) and an arc-shaped lower part (45422) that tapers downward from the square upper part (45421); the multi-panel (211) includes two parallel and opposite clamping plates (2112), the distance between the two clamping plates (2112) is 0.1~1mm larger than the width of the square upper part (45421); During the process of rotating the first horizontal arm (4) to insert the pin (453) into the socket, the arc-shaped lower part (45422) first enters between the two clamping plates (2112), and then the square upper part (45421) enters between the two clamping plates (2112).
6. The foldable treadmill according to claim 1, characterized in that, The first upright arm (2) or the second upright arm (3) is fixed with a rotating shaft (7), and the rotating shaft (7) is rotatably connected to the running platform (1); The locking mechanism (8) includes a second spring (81), a handle (82), a locking pin (83), and a toothed plate (84); the middle part of the handle (82) is hinged to the running platform (1); the locking pin (83) is connected to the front end of the handle (82); the two ends of the second spring (81) are respectively connected to the rear end of the handle (82) and the running platform (1); the toothed plate (84) is fixed on the rotating shaft (7); the toothed plate (84) has a front tooth (841), a middle tooth (842), and a rear tooth (843); a first arc-shaped groove (844) is formed between the middle tooth (842) and the rear tooth (843); the front tooth (841) A second arc-shaped groove (845) is formed between the first arc-shaped groove (844) and the middle tooth (842); in one state, the locking pin (83) is embedded in the first arc-shaped groove (844), preventing the first upright arm (2) and the second upright arm (3) from rotating relative to the running platform (1); the upper end of the middle tooth (842) is inclined to the rear tooth (843), so that the middle tooth (842) and the rear tooth (843) clamp the locking pin (83), and the middle tooth (842) has an arc-shaped top surface (8421), which extends smoothly from the bottom of the second arc-shaped groove (845) to the upper part of the first arc-shaped groove (844); The treadmill also includes a foot pedal (86); the foot pedal (86) is connected to the rear end of the handle (82); when the foot pedal (86) is stepped on, the handle (82) rotates, the second spring (81) stretches, the locking pin (83) disengages from the first arc groove (844), the first arm (2) and the second arm (3) are rotated to be flush with the side of the running platform (1), the foot pedal (86) is released, the spring contracts and drives the handle (82) to rotate, so that the locking pin (83) is embedded in the second arc groove (845); the first arm (2) and the second arm (3) are rotated again, and the locking pin (83) in the second arc groove (845) slides relative to the first arc groove (844) along the arc-shaped top surface (8421), and finally embeds in the first arc groove (844) to prevent the first arm (2) and the second arm (3) from rotating relative to the running platform (1).
7. The foldable treadmill according to claim 6, characterized in that, The first upright arm (2) and the second upright arm (3) are respectively fixed with a rotating shaft (7), and each rotating shaft (7) is rotatably connected to the side of the running platform (1); the treadmill includes two sets of locking mechanisms (8), which are symmetrically installed on both sides of the running platform (1) and on the two rotating shafts (7); the two handles (82) of the two sets of locking mechanisms (8) are fixedly connected by a connecting shaft (85), and the connecting shaft (85) is rotatably installed in the running platform (1) in its original position.
8. The foldable treadmill according to claim 6 or 7, characterized in that, The treadmill also includes a stop pin (9), which is fixed to the side of the running platform (1) and located in front of the pivot (7); On the side of the tooth plate (84) facing away from the middle tooth (842), there is a smoothly connected transition arc segment (846) and arc segment (847) between the front tooth (841) and the rear tooth (843). The transition arc segment (846) is connected to one end of the arc segment (847) and is the same width as the arc segment (847). The width of the transition arc segment (846) gradually increases from the end connected to the arc segment (847) to the end connected to the front tooth (841). During the rotation process of the first upright arm (2) and the second upright arm (3) relative to the running platform (1): when the locking pin (83) is inserted into the first arc groove (844), the stop pin (9) abuts against the middle position of the transition arc segment (846); when the locking pin (83) enters the second arc groove (845), the stop pin (9) is spaced apart from the arc segment (847).