Automatic walking machine

Abstract

The invention relates to a device for exercising the lower limbs of a human body, in particular to an automatic walking machine which comprises a shell, a driving mechanism arranged in the shell, a swing arm driven to rotate in a reciprocating mode, a pedal support arranged outside the shell and connected with the swing arm in a pivoted mode, and an integrally-formed center shaft which comprises a base and a shaft rod located on the base. The shaft rod is pivoted with a central shaft hole formed in the middle of the swing arm; and the base is arranged on the connecting seat and is matched and fixed with the threaded hole through a bolt. The protruding connecting base is arranged on the lower shell and serves as a supporting swing arm structure, and supporting is firmer and more stable. Threaded holes are formed in the base and the connecting base in the circumferential direction and are directly fixed through bolts, the base and the connecting base are sequentially fixed through the bolts from top to bottom, connection is convenient, meanwhile, connection machining of the base and the shaft rod is reduced through the integrally-formed center shaft, the leg exercising device is indirectly and rapidly assembled, and the assembling cost is reduced.

Description

Technical Field

[0001] The invention relates to a device for exercising human lower limbs, in particular to an automatic walking machine. Background Art

[0002] It is well known that physical exercise is essential for maintaining overall health and promoting the effective functioning of various parts of the human body (such as legs, arms, etc.). However, with the accelerated pace of life and changes in labor patterns, many people perform their daily tasks or work while sitting all day, with little leisure time for physical exercise. Temporary high-intensity physical exercise can easily cause muscle and joint injuries. Over time, this lack of physical activity will have a negative impact on personal health.

[0003] Therefore, there is a need in the art for a sports device that is low in cost, reliable in operation, and convenient in size, configuration, and overall structure. The U.S. patent with publication number US8550963B1 discloses "a leg exercise combination" that uses a motor and a cam assembly to drive two foot supports that can translate back and forth, so that the feet can be passively exercised. However, the product structure is relatively complex, resulting in heavy weight and high cost. The European patent with publication number ES2000002939 discloses a "seated lower limb exercise system" that is used to exercise the legs in a sitting position through a footrest that is used to place the feet and transmit reciprocating motion. However, due to the lack of support of the key connecting structure of its rotating pivot structure, it is easy to be damaged, and the motor and the like are firmly fixed, so that the connection of the motor and the like is easy to vibrate and loosen, and the matching relationship is easy to fail, so further improvement is needed. Summary of the invention

[0004] In response to one or more of the above-mentioned existing problems such as high cost and insufficient supporting node structure, the present invention provides an automatic walking machine, which not only solves the noise problem but also reduces the cost and prolongs the service life through improvements such as a rotating pivot structure.

[0005] The objective of the present invention is achieved through the following technical solutions: an automatic walking machine, comprising a shell, a driving mechanism arranged in the shell and a swing arm driven to rotate reciprocally, a pedal support arranged outside the shell and pivotally connected to the swing arm, the shell comprising an upper shell and a lower shell, the lower shell being provided with a raised connecting seat, a threaded hole being arranged upwardly on the connecting seat; comprising an integrally formed central axis, the central axis comprising a base and an axle rod located on the base, the axle rod being pivotally connected to the central axis hole arranged in the middle of the swing arm, the base being seated on the connecting seat and being fixed by bolts and the threaded holes.

[0006] The present invention provides a raised connecting seat on the lower shell as a supporting swing arm structure, so that the support is more firm and stable; threaded holes are arranged upward on the base and the connecting seat to directly fix them through bolts, and the bolts fix the base and the connecting seat from top to bottom at the same time, which is convenient for connection. At the same time, the one-piece central axis reduces the connection processing between the base and the shaft rod, making the assembly of the leg exerciser simple and fast, and reducing the assembly cost.

[0007] Preferably, the base is disc-shaped and is provided with a plurality of through holes, and the threaded holes are formed so that a copper nut is fixed on the connecting seat, and one end of the bolt passes through the through hole and cooperates with the copper nut thread.

[0008] The present invention increases the connection strength by fixing the copper nut on the connecting seat, improves the stability of use, can realize the direct fixed connection between the connecting seat and the base, saves the space for installing the connecting parts, enables the originally thin lower shell to withstand the main force, and is also very convenient to install.

[0009] Preferably, the connection seat is provided with a protruding positioning column and is surrounded by an outer ring higher than the end surface of the connection seat, and the outer ring is adapted to the base and cooperates with the positioning column to limit the base.

[0010] The outer ring structure can enhance the overall strength of the connection seat, and the outer ring is higher than the connection seat, which restricts the base within the outer ring, limits the horizontal movement of the base, and reduces the shear force on the connection bolts. The outer ring and the positioning column can make the base quickly positioned when sitting on the connection seat, which is convenient for the bolts and copper nuts to be quickly positioned, connected and fixed.

[0011] Preferably, a support platform is provided on the base around the shaft rod, the base, the shaft rod and the support platform are an integrated piece, and the support platform supports the bottom end of the central shaft hole.

[0012] The base, shaft rod and support platform of the present invention are an integrated part, which is processed and formed as a whole, thus reducing assembly and improving structural strength.

[0013] Preferably, a cross shaft is fixed at both ends of the swing arm, the cross shaft includes a pivot end, the pedal support includes a pivot portion protruding downward to form a columnar shape, a pivot hole is provided at the center of the pivot portion, the pivot end is inserted into the pivot hole, and an oil groove is provided on the side wall of the pivot hole.

[0014] The present invention arranges an oil groove on the connecting hole, which can lubricate the pivotal rotation, reduce friction and noise, and can reduce the use of transverse and vertical bearings, thereby reducing manufacturing costs.

[0015] Preferably, the swing arm is made of nylon and glass fiber, and three to four axial oil grooves are evenly distributed on the side wall of the pivot hole, and the upper end of the oil groove is open at the upper end of the pivot hole.

[0016] The swing arm is made of nylon and glass fiber with an oil tank, which reduces the weight and manufacturing cost of the leg exerciser while meeting the requirements of noise, strength and wear resistance.

[0017] Preferably, the output of the driving mechanism is hinged to one end of the driving connecting rod, the other end of the driving connecting rod is hinged to the swing arm, and both ends of the driving connecting rod are respectively provided with a hinge hole and a hinge rod, and the side wall of the hinge hole is provided with a second oil groove, and the hinge rod includes a fixed end and a cylindrical end with a thread, and the cylindrical end cooperates with the hinge hole, and the lubricant in the second oil groove.

[0018] The driving mechanism of the present invention is an existing driving structure, but a second oil groove is provided by the driving connecting rod, so that the movement is smoother, the noise is smaller and the cost is low.

[0019] Preferably, the driving mechanism includes a motor and a deceleration swing arm box, and a plurality of connecting ears are arranged around the deceleration swing arm box, and a plurality of bosses are correspondingly provided at relative positions of the lower shell body, and bolts pass through the connecting ears to fix the connecting ears on the bosses, so that the deceleration swing arm box is suspended.

[0020] The invention fixes the deceleration swing arm box overhead by means of a convex column, which can reduce the transmission of noise and vibration, and the overhead space can provide installation space for the double swing arms output by the deceleration swing arm box.

[0021] Preferably, a plurality of upper clamping plates are arranged at intervals on the upper shell body corresponding to the position of the motor, and a plurality of lower clamping plates are arranged at intervals on the lower shell body corresponding to the position of the motor. The upper clamping plates and the lower clamping plates are respectively pressed against the upper and lower sides of the motor to clamp and fix the motor.

[0022] The motor is clamped and fixed by setting the upper clamping plate and the lower clamping plate, which also makes the motor in the air. The motor and the reduction swing arm box are in an overhead position, which reduces the noise of the leg exerciser. At the same time, it can also make the motor, reduction swing arm, driving connecting rod and swing arm basically in the same plane, reducing shear force and friction.

[0023] Preferably, the lower shell is a groove-shaped structure with crisscross reinforcement ribs, the upper shell is a cover plate-shaped structure buckled on the lower shell 12 to form an installation space, and the edges of the upper shell and the lower shell are provided with snap fits. The lower shell is more firmly arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of the automatic walking machine of this embodiment; Figure 2 This is a schematic diagram of the structure of the automatic treadmill after removing the silicone foot pad; Figure 3 This is a schematic diagram of the structure of the automatic treadmill after the pedal support is removed; Figure 4 This is a schematic diagram of the structure of the automatic treadmill after removing the upper shell; Figure 5 This is a schematic diagram of the exploded structure of the main components of the automatic treadmill; Figure 6 It is a schematic diagram of the matching structure between the lower shell and the central axis; Figure 7 It is a schematic diagram of the lower shell structure; Figure 8 It is a schematic diagram of the upper shell structure; Fig. 9 is a schematic diagram of a pedal support structure; Fig.10 for Fig. 9 Schematic cross-sectional view in the AA direction; Fig.11 It is a schematic diagram of the three-dimensional structure of the driving connecting rod and the hinged rod; Fig.12 Schematic diagram of the driving connecting rod structure; Fig.13 for Fig.12 Schematic diagram of the cross-sectional structure along the BB direction.

[0025] 10-housing, 11-upper housing, 111-track hole, 112-upper card plate, 12-lower housing, 121-connecting seat, 1211-copper nut, 122-outer ring, 123-rib plate, 124-lower card plate, 125-positioning column, 13-buckle, 14-control board; 20-driving mechanism, 21-motor, 22-reduction swing arm box, 221-double-rod swing arm, 222-connecting ear, 23-swing arm, 231-central shaft hole, 232-end shaft hole, 24-central shaft, 243-base, 25-cross shaft, 27-vertical bearing, 28-driving connecting rod, 281-hinge hole, 2811-second oil groove, 282-hinge rod; 30-pedal support, 31-supporting plate surface, 32-pivot portion, 33-pivot hole, 34-oil groove; 40-Silicone foot pads, 50-Circuit board. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Example

[0029] like Figure 1-5 As shown, the automatic walking machine includes a shell 10 and a driving mechanism 20 arranged inside the shell, and at least two parallel pedal supports 30 arranged above the shell. The driving mechanism 20 drives the two pedal supports 30 to move back and forth, driving the user's feet to move.

[0030] The housing 10 includes an upper housing 11 and a lower housing 12, which enclose an installation space for the drive mechanism 20 and a circuit board 50 for controlling the drive mechanism. The drive mechanism 20 includes a motor 21, a speed reduction swing arm box 22 and two swing arms 23.

[0031] The two swing arms 23 are straight connecting rods with a central shaft hole 231, which is pivotally connected to the central shaft 24. The swing arms 23 are made of nylon and glass fiber composite material, which has reliable strength, low cost, easy processing and good wear resistance compared to the commonly used zinc alloy.

[0032] The central shaft 24 includes an integrally formed shaft rod, a support platform and a base 243. The shaft rod is a rod extending upward from the center of the base 243. The support platform is a platform protruding from the bottom of the shaft rod. A snap ring groove is provided at the top of the shaft rod to cooperate with a snap ring to limit the swing arm. The shaft rod, the support platform and the base 243 are an integrally formed structure, and the forming methods include casting, forging and machining.

[0033] like Figure 6-7 As shown, the lower shell 12 is provided with a protruding connection seat 121, and a threaded hole is arranged on the connection seat 121. The threaded hole is formed into a copper nut 1211 fixed to the connection seat 121 by hot melting or the like. A through hole is correspondingly arranged on the base 243, and one end of the bolt passes through the through hole and is threadedly connected to the threaded hole of the copper nut 1211 to fix the base 243 on the connection seat 121. The connection seat 121 is surrounded by an outer ring 122 that is higher than the end face of the connection seat. The outer ring 122 is higher than the upper end face of the connection seat 121 and is on the circumference of the base 243.

[0034] A plurality of connecting ribs 123 are arranged between the outer side of the outer ring 122 and the lower shell 12. The ribs 123 increase the overall strength of the lower shell 12 and increase the connection strength between the connecting seat 121 and the lower shell 12, so that the base 243 can be firmly fixed to the connecting seat 121. In addition, the nut is embedded in the connecting seat 121 because the bolt passes through the connecting seat 121 from top to bottom and is threadedly connected to the connecting seat 121. The connecting seat 121 is also provided with a positioning column 125. The positioning column 125 is a protruding columnar structure, including a cross shape, a cylindrical shape, etc., which cooperates with the positioning hole provided on the base 243, so that the positioning seat can be quickly positioned and installed, and can also play a role of limiting after installation.

[0035] The central shaft 24 bears the main force, and the fixing of the central shaft 24 has a significant impact on the service life and load-bearing capacity of the automatic walking machine. The central shaft 24 and the central shaft hole 231 are provided with a vertical bearing 27, and a roller bearing is provided between the support platform and the swing arm 23, so that the swing arm 23 can rotate more smoothly.

[0036] like Figure 4-5 As shown, the two ends of the swing arm 23 are respectively provided with end shaft holes 232, through which the cross shaft 25 is installed. Specifically, one end of the cross shaft 25 has a thread as a fixed end, the other end is a pivot end, and the middle is a stopper. The fixed end passes through the end shaft hole 232 and is tightened and fixed by a nut, and the stopper is located above the end shaft hole 232. The end of the pivot end is provided with relatively parallel cut surfaces, which is convenient for a wrench to fix the pivot end, so that the nut is easy to fix.

[0037] The pivot end of the cross shaft 25 is pivotally connected to the pedal support 30 .

[0038] like Figure 9-10 As shown, the pedal support 30 includes a support plate surface 31 and a pivot part 32. The pivot part 32 protrudes downward to form a columnar structure, and a pivot hole 33 is provided at the center of the pivot part 32. A silicone foot pad 40 is installed on the pedal support 30. The pivot end passes through the pivot hole 33, and its end is fixed by a gasket and a retaining spring. Bearings can be provided at the lower end of the pivot part 32 and the stopper, and a plurality of oil grooves 34 are provided on the side wall of the pivot hole 33. The pivot end and the side wall of the pivot hole 33 are lubricated by the lubricating oil in the oil groove 34, so that the connection between the pivot part 302 and the cross shaft 25 is smoother during rotation and at a low cost. Specifically, three to four axially extending oil grooves 34 are provided on the side wall of each pivot hole 33, which are evenly distributed. The upper end of the oil groove 34 is open at the upper end of the pivot hole 33. The pedal support 30 is provided with two front and rear pivot parts 32, and the two substantially parallel pedal supports 30 are rotatably connected to the cross shafts 25 fixed on the two ends of the two parallel swing arms 23. Under the support and drive of the swing arms 23, the two ends of the two pedal supports 30 respectively make circular motions relative to the two central shafts 24.

[0039] like Figure 3 , 5 As shown in FIG. 8 , a track hole 111 is provided at a position of the upper shell 11 corresponding to the pivoting portion 32 , and the track hole 111 is substantially an arc-shaped hole arranged below the pedal support 30 . A control panel 14 is also provided on the upper shell 11 .

[0040] The driving mechanism 20 includes a motor 21 and a reduction swing arm box 22. The reduction swing arm box 22 includes a turbine meshed with the output worm of the motor 21. An eccentric shaft is provided on the turbine. The eccentric shaft is connected to a connecting rod. The connecting rod is connected to a double-rod swing arm 221. The double-rod swing arm 221 outputs a forward and backward swing at a certain angle. The output end of the double-rod swing arm 221 is hinged to one end of a driving connecting rod 24, and the other end of the driving connecting rod 24 is hinged to the swing arm 23.

[0041] like Figure 11-13 As shown, hinge holes 281 are respectively provided at both ends of the driving connecting rod 28, and the hinge holes 281 cooperate with the hinge rod 282, so that the two ends of the driving connecting rod 28 are hingedly connected. The side wall of the hinge hole 281 is provided with a second oil groove 2811, and the hinge rod 282 includes a fixed end with a thread and a cylindrical end, and the cylindrical end cooperates with the hinge hole 281, and the lubricating oil in the second oil groove 2811 lubricates the connection.

[0042] A plurality of connecting ears 222 are arranged around the deceleration swing arm box 22, and a plurality of bosses 122 are correspondingly arranged at the relative position of the lower housing 12. Bolts pass through the connecting ears 222 and fix the connecting ears 222 on the bosses 122, so that the deceleration swing arm box 22 is suspended, reducing the noise caused by the vibration of the gearbox. Copper nuts are threadedly connected to the bolts, and the copper nuts are fixed on the bosses 122 by hot melting or other methods, so that the bolt connection is more secure.

[0043] like Figure 7-8 As shown, a plurality of upper card plates 112 are arranged at intervals on the upper shell 11 corresponding to the position of the motor, and a plurality of lower card plates 124 are arranged at intervals on the lower shell 12 corresponding to the position of the motor. After the upper shell 11 and the lower shell 12 are buckled, the upper card plates 112 and the lower card plates 124 are respectively pressed against the upper and lower sides of the motor 21 to clamp and fix the motor 21, and the card plates arranged at intervals can reduce the transmission of vibration and reduce mechanical noise. The upper card plates 112 and the lower card plates 124 can be arranged on the arc surface end faces of the motor 21, with a large contact area, and the left and right sides can also be limited, which can play the role of fixing and shock absorption at the same time.

[0044] The lower shell 12 is a groove-shaped structure, provided with crisscross reinforcement ribs, and the upper shell 11 is a cover plate-shaped structure, buckled on the lower shell 12. The edges of the upper shell 11 and the lower shell 12 are provided with snap-fit ​​13.

[0045] The "transverse" mentioned in this application is the horizontal and perpendicular direction to the "longitudinal" length direction of the pipeline to be installed, and the "front" and "rear" are relative to the front and back of the carrier vehicle, which are generally in the same direction as the "longitudinal" length direction of the pipeline.

[0046] The present invention and its embodiments are described schematically above, which is not restrictive. The drawings show only one embodiment of the method of the present invention, which is not limited thereto. Therefore, if a person skilled in the art is inspired by the invention and creatively designs methods and embodiments similar to the technical solution without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. An automatic walking machine, comprising a housing (10), a driving mechanism (20) disposed in the housing (10), a swing arm (23) driven to reciprocate, and a pedal support (30) disposed outside the housing (10) and pivotally connected to the swing arm (23), characterized in that: The housing (10) comprises an upper housing (11) and a lower housing (12), wherein the lower housing (12) is provided with a protruding connection seat (121), and a threaded hole is arranged upwardly on the upper circumference of the connection seat (121); the housing (10) comprises an integrally formed central shaft (24), wherein the central shaft (24) comprises a base (243) and an axle rod located on the base (243), wherein the axle rod is pivotally connected to a central shaft hole (231) arranged in the middle of the swing arm (23), and the base (243) is seated on the connection seat (121) and fixed by bolts in cooperation with the threaded hole.

2. The automatic walking machine according to claim 1, characterized in that: The base (243) is disc-shaped and is provided with a plurality of through holes. The threaded holes are formed so that a copper nut (1211) is fixed on the connection seat (121), and one end of a bolt passes through the through hole and is threadably engaged with the copper nut (1211).

3. The automatic walking machine according to claim 1, characterized in that: The connecting seat (121) is provided with a protruding positioning column (125) and an outer ring (122) surrounding the connecting seat (121) and higher than the end surface of the connecting seat (121); the outer ring (122) is adapted to the base (243) and cooperates with the positioning column (125) to limit the base (243).

4. The automatic walking machine according to any one of claims 1 to 3, characterized in that: A support platform is provided on the base (243) around the shaft rod; the base (243), the shaft rod and the support platform are an integrated piece; the support platform supports the bottom end of the central shaft hole (231).

5. The automatic walking machine according to claim 1, characterized in that: A cross shaft (25) is fixed to both ends of the swing arm (23), the cross shaft (25) includes a pivot end, the pedal support (30) includes a pivot portion (32) protruding downward to form a columnar shape, a pivot hole (33) is provided at the center of the pivot portion (32), the pivot end is inserted into the pivot hole (33), and an oil groove (34) is provided on the side wall of the pivot hole (33).

6. The automatic walking machine according to claim 5, characterized in that: The swing arm (23) is made of nylon and glass fiber, and three to four axial oil grooves (34) are evenly distributed on the side wall of the pivot hole (33), and the upper end of the oil groove (34) is open at the upper end of the pivot hole (33).

7. The automatic walking machine according to claim 1, characterized in that: The output of the driving mechanism (20) is hinged to one end of a driving connecting rod (24), and the other end of the driving connecting rod (24) is hinged to the swing arm (23). Both ends of the driving connecting rod (28) are respectively provided with a hinge hole (281) and a hinge rod (282). A second oil groove (2811) is provided on a side wall of the hinge hole (281). The hinge rod (282) comprises a fixed end with a thread and a cylindrical end. The cylindrical end cooperates with the hinge hole (281). The lubricant in the second oil groove (2811) is filled.

8. The automatic walking machine according to claim 7, characterized in that: The driving mechanism (20) comprises a motor (21) and a deceleration swing arm box (22); a plurality of connection ears (222) are arranged around the deceleration swing arm box (22); a plurality of bosses (122) are correspondingly provided at relative positions of the lower housing (12); bolts pass through the connection ears (222) to fix the connection ears (222) to the bosses (122), so that the deceleration swing arm box (22) is suspended.

9. The automatic walking machine according to claim 7, characterized in that: A plurality of upper clamping plates (112) are arranged at intervals on the upper housing (11) corresponding to the position of the motor (21), and a plurality of lower clamping plates (124) are arranged at intervals on the lower housing (12) corresponding to the position of the motor (21). The upper clamping plates (112) and the lower clamping plates (124) are respectively abutted against the upper and lower sides of the motor (21) to clamp and fix the motor (21).

10. The automatic walking machine according to any one of claims 1-3, 5-9, characterized in that: The lower shell (12) is a groove-shaped structure and is provided with crisscross reinforcing ribs; the upper shell (11) is a cover plate-shaped structure snapped onto the lower shell 12 to form an installation space; and snap-fits (13) are provided on the edges of the upper shell (11) and the lower shell (12).

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