CN110465045A - A kind of treadmill of four controllable gas springs structure adjustable handrail double mode - Google Patents

Abstract

The invention relates to the field of treadmills, in particular, a treadmill with four controllable gas spring structures and two modes of armrest adjustment includes a treadmill body and an armrest assembly actively connected to the treadmill body. The armrest assembly includes an armrest, a column, and a connector. The main body includes a frame, a slideway is provided in the middle of the frame, and a slider corresponding to the connecting body is arranged in the slideway. The frame is provided with a first controllable gas spring for driving the slider, and a second controllable gas spring for rotating the connecting body. The gas spring, the treadmill also includes a control device for controlling the locking and/or unlocking of the first controllable gas spring and the second controllable gas spring. Through the angle-adjustable armrest assembly, the treadmill has multiple use modes of forward walking, backward walking, forward walking and backward walking for two people at the same time, and running.

Description

A dual-mode treadmill with four controllable gas spring structures and adjustable armrests

technical field

The invention relates to the field of treadmills, in particular to a dual-mode treadmill with four controllable gas spring structures and adjustable armrests.

Background technique

The traditional treadmill is designed according to the normal exercise posture of the human body. It transplants people's original outdoor exercise indoors, which facilitates and expands people's exercise space. Compared with outdoor exercise, the treadmill brings people more safety and comfort.

Modern medical research shows that walking backwards can exercise the lumbar spinal muscles, quadriceps, muscles and ligaments around the ankle and knee joints, thereby adjusting the motor functions of the spine and limbs and promoting blood circulation. Long-term adherence to walking backwards has a good auxiliary therapeutic effect on waist and leg pain, cramps, muscle atrophy, and arthritis. More importantly, because walking backwards is an unnatural way of moving, it can exercise the cerebellum's judgment of direction and coordination of the human body. For teenagers, in order to maintain balance when walking backwards, the back spine must be extended, and it also has the effect of preventing hunchback.

Please refer to Figure 1. The Chinese utility model patent with the publication number CN201823227U discloses a treadmill with the function of reversing and easy folding, including the treadmill frame, frame columns, left and right handrails, running belts, electronic controllers, motors, etc. component, it is characterized in that: the treadmill frame (14) and the frame column (1) are flexibly connected in an inclined L shape, and the connecting member consists of a folding wrench (28), two steel wire ropes (11) and two position-limiting The pin (10) is formed, and is flexibly connected with the corresponding limit hole at the front end of the frame (14), the folding wrench (28) is arranged in the second armrest cover (3), and the two steel wire ropes (11) are respectively arranged on the two frame columns (1 ); the frame (14) is a flat rectangular frame, and its front end is connected with the connecting frame (5) of the frame column (1), and the frame (14) motor loam cake is above the connecting frame (5) (15), a pair of transfer wheels (24) are arranged below the connecting frame (5), and the motor (17) is connected to the front drum assembly (18) by a belt, and a rear drum assembly (22) is set at the rear end of the frame (14) , the front and rear ends of the frame (14) are all provided with tension screw rods to tension the running belt (13) between the front roller assembly (18) and the rear roller assembly (22), and a running belt is arranged in the middle of the running belt (13). Board (12), running board (12) is fixedly connected with frame (14) with bolt, is provided with two symmetrical frame pads (23) at the rear end bottom of frame (14); Described running belt (13) is a highly elastic plastic material with anti-skid particles; display screen (26), multi-option function keys, buzzer, safety latch (25), pull cord ring cover are arranged on the described electronic controller (9) panel (29) and power switch (27).

The treadmill in the prior art has the defects that the frame column cannot adjust the folding angle and has a single use mode.

Contents of the invention

The purpose of the present invention is to provide a dual-mode treadmill with four controllable gas spring structures and adjustable armrests in multiple use modes.

In order to achieve the above advantages, the dual-mode treadmill with four controllable gas spring structures and adjustable armrests provided by the present invention includes a treadmill body and an armrest assembly dynamically connected to the treadmill body, and the armrest assembly includes a pair of uprights, a set The armrest between the upper ends of a pair of uprights and the connecting body fixed at the lower end of the uprights, the main body of the treadmill includes a frame, and it is characterized in that a slideway is provided in the middle of the frame, and a slideway is provided in the slideway to connect with the The frame is provided with a first controllable gas spring for driving the slider and a second controllable gas spring for rotating the connecting body. The treadmill also includes a controllable gas spring for controlling the A control device for locking and/or unlocking the first controllable gas spring and the second controllable gas spring.

In one embodiment of the present invention, the first controllable gas spring is respectively connected and fixed to the frame and the slider, and the second controllable gas spring is hinged to the frame and the lower part of the column respectively.

In one embodiment of the present invention, the connecting body is provided with an angle-adjustable rotating shaft, the slider is hinged to the connecting body through the rotating shaft, and the rotating shaft is provided with a plurality of radial limit The slider is provided with a limit post corresponding to the limit notch, and one end of the limit post is provided with a return spring.

In one embodiment of the present invention, the main body of the treadmill further includes a running belt and a motor located at the rear end of the running belt. The motor housing is connected and fixed to the frame outside the motor, and the motor housing is provided with a The running belt has footrests that are flush with the upper surface.

In one embodiment of the present invention, the control device includes a fixed sleeve threadedly connected with the piston rod, a drive block hinged inside the fixed sleeve, and a metal rod for pulling the drive block to press the button. wire, a switch connected with a plurality of metal wires, the switch includes a base connected and fixed with the frame and a pull ring hinged with the base, the pull ring is provided with a ring connected and fixed with the end of the metal wire of the rotating part.

In one embodiment of the present invention, the running belt is provided with a pair of rollers respectively hinged to the two ends of the frame, the running belt is sleeved outside the pair of rollers, and the motor is used to drive the The roller shaft rotates, and the motor is provided with a transmission belt connected with the roller shaft.

In one embodiment of the present invention, there is a running board for shock absorption between the pair of rollers.

In one embodiment of the present invention, both the first controllable gas spring and the second controllable gas spring are composed of a cylinder body and a piston rod, and a button is provided at the end of the piston rod.

In one embodiment of the present invention, the base is provided with an arc-shaped sliding slot corresponding to the limiting column, and the arc-shaped sliding slot can limit the rotation angle of the rotating part.

In one embodiment of the present invention, when the driving block presses the button, the first controllable gas spring and the second controllable gas spring are in an unlocked state; When the button is pressed, the first controllable gas spring and the second controllable gas spring are in a locked state.

In the present invention, through the angle-adjustable armrest assembly, the treadmill has multiple use modes of forward walking, backward walking, forward walking and backward walking by two people at the same time, and running.

Description of drawings

Fig. 1 is a structural schematic diagram of a treadmill with the functions of walking backwards and being easy to fold in the prior art.

Fig. 2 is a schematic structural diagram of a treadmill with four controllable gas spring structures and dual modes of armrest adjustment according to the first embodiment of the present invention.

Fig. 3 is a front view of the treadmill in Fig. 2 with four controllable gas spring structures and adjustable armrests in dual modes.

FIG. 4 is a bottom view of the motor housing of the treadmill with four controllable gas spring structures and adjustable armrests in FIG. 2 .

FIG. 5 is a schematic structural diagram of the motor of the treadmill with four controllable gas spring structures in FIG. 2 to adjust the dual mode of the armrest.

FIG. 6 is a cutaway schematic diagram of the main body of the four-controllable gas spring structure adjustable armrest dual mode treadmill of FIG. 2 .

FIG. 7 is a schematic diagram of the structure of the upright column and the slideway of the treadmill with four controllable gas spring structures in FIG. 2 to adjust the double mode of the armrest.

FIG. 8 is a structural schematic diagram of the connecting body and the slider of the treadmill with four controllable gas spring structures in FIG. 2 to adjust the double mode of the armrest.

FIG. 9 is a schematic cut-away view of the slider of the treadmill with four controllable gas spring structures in FIG. 2 to adjust the double mode of the armrest.

Fig. 10 is a schematic cut-away view of the connecting body and the slider of the treadmill with four controllable gas spring structures in Fig. 2 to adjust the double mode of the armrest.

Fig. 11 is an exploded view of the slider of the treadmill with four controllable gas spring structures in Fig. 10 to adjust the double mode of the armrest.

Fig. 12 is an exploded view of the connecting body of the treadmill with four controllable gas spring structures in Fig. 10 to adjust the double mode of the armrest.

FIG. 13 is a cut-away schematic diagram of the gas spring of the treadmill with four controllable gas spring structures in FIG. 2 to adjust the double mode of the armrest.

Fig. 14 is a partially enlarged view of the gas spring A of the treadmill with four controllable gas spring structures in Fig. 13 to adjust the double mode of the armrest.

FIG. 15 is a schematic diagram of the structure of the switch and the frame of the treadmill with four controllable gas spring structures in FIG. 2 to adjust the double mode of the armrest.

Fig. 16 is a schematic structural diagram of the switch of the treadmill with four controllable gas spring structures in Fig. 2 to adjust the double mode of the armrest.

Fig. 17 is a top view of the switch of the treadmill with four controllable gas spring structures in Fig. 16 to adjust the double mode of the armrest.

FIG. 18 is a right view of the switch of the dual-mode treadmill with four controllable gas spring structures in FIG. 16 .

Fig. 19 is a left view of the switch of the dual-mode treadmill with four controllable gas spring structures in Fig. 16 .

Fig. 20 is a schematic structural diagram of a frame of a treadmill with four controllable gas spring structures and dual modes of armrest adjustment according to the second embodiment of the present invention.

FIG. 21 is a schematic structural diagram of the switch of the treadmill with four controllable gas spring structures in FIG. 20 to adjust the dual mode of the armrest.

Fig. 22 is a front view of the treadmill in Fig. 20 with four controllable gas spring structures to adjust the double mode of the armrest when it is folded at 0°.

Fig. 23 is a front view of the treadmill of Fig. 20 with four controllable gas spring structures to adjust the double mode of the armrest when it is folded at 82°.

Fig. 24 is a front view of the treadmill in Fig. 20 with four controllable gas spring structures to adjust the double mode of the armrest when it is folded 120°.

Fig. 25 is a front view of the treadmill of Fig. 20 with four controllable gas spring structures to adjust the double mode of the armrest when it is folded at 20°.

Fig. 26 is a schematic structural diagram of a connecting body and a slider of a treadmill with four controllable gas spring structures and dual modes of armrest adjustment according to the third embodiment of the present invention.

Fig. 27 is a schematic structural view of the slider of a treadmill with four controllable gas spring structures and dual modes of armrest adjustment according to the fourth embodiment of the present invention.

Fig. 28 is a schematic structural view of a treadmill with four controllable gas spring structures and adjustable armrests in the fifth embodiment of the present invention.

Detailed ways

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Please refer to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the treadmill with four controllable gas spring structures and adjustable handrails in the first embodiment of the present invention includes a treadmill main body 1 and a treadmill body 1 dynamically connected The armrest assembly 2 is characterized in that the treadmill main body 1 includes a running belt 11, a motor 12 positioned at the rear end of the running belt 11, and a motor housing 13 outside the motor 12. Pedal 131, motor housing 13 bottom is provided with cooling hole 132, and cooling hole 132 is used for dissipating heat to motor 12, also has the control circuit board 133 for controlling motor 12 in motor housing 13.

The treadmill main body 1 also includes a frame 14 connected and fixed to the motor housing 13 , the upper surface of the frame 14 is provided with an anti-slip mat 141 , and the motor housing 13 is positioned on both sides of the pedal 131 to be flush with the anti-slip mat 141 . The bottom of the front end of the frame 14 is fixed with a frame seat 145, and the frame seat 145 and the motor housing 13 are also used to support the treadmill.

Please refer to Fig. 6, the running belt 11 is provided with a pair of rollers 15 respectively hinged with the two ends of the frame 14, the running belt 11 is sleeved outside the pair of rollers 15, the motor 12 is used to drive the rotation of the rollers 15, and the motor 12 is provided with The transmission belt 121 that is connected with the roller 15 transmission. A running board 16 for shock absorption is arranged between a pair of rollers 15 .

Referring to Fig. 7, Fig. 8 and Fig. 9, the armrest assembly 2 includes a handrail 21, a column 22, and a connecting body 23 located at the lower end of the column 22. The connecting body 23 is provided with an angle-adjustable rotating shaft 231, and the rotating shaft 231 is provided with multiple Radial limiting notch 232 . The middle part of the frame 14 is provided with a slideway 143, the slideway 143 is provided with a slider 17 that is rotatably connected with the connecting body 23, the slider 17 is hinged with the connecting body 23 through a rotating shaft 231, and the sliding block 17 is provided with a position corresponding to the limit gap 232. A limiting column 171, one end of the limiting column 171 is provided with a reset spring 172. When the limiting post 171 is partially accommodated in the limiting notch 232 , the rotation resistance of the rotating shaft 231 is increased; when the limiting post 171 is pushed out of the limiting notch 232 , the rotating resistance of the rotating shaft 231 is reduced. During the process of rotating the connecting body 23, the sound and damping generated by the rotating shaft 231 are helpful for the precise adjustment of the angle.

A sliding hole 23 a corresponding to the connecting body 23 is opened on the outer side of the frame 14 , and the sliding hole 23 a is used for the rotation shaft 231 to move along the length direction of the frame 14 .

Handrail 21 is provided with the display screen that is electrically connected with control circuit board 133, and display screen is used for displaying the speed, time, mileage of running belt.

Please refer to Fig. 10, Fig. 11, Fig. 12, the slider 17 includes a slider body 17a and a first nylon bushing 18a and a second nylon bushing 18b located in the slider body 17a, the first nylon bushing 18a, the second nylon bushing The nylon sleeves 18b each have a tapered surface a contacting the inner wall of the slider main body 17a.

The slider main body 17a is respectively provided with a first shaft groove 17b and a second shaft groove 17c corresponding to the first nylon shaft sleeve 18a and the second nylon shaft sleeve 18b, and a limiting shaft groove 17b is provided between the first shaft groove 17b and the second shaft groove 17c. The position portion 17d, the end of the rotating shaft 231 is provided with a detachable snap ring 19a, the end of the rotating shaft 231 facing away from the snap ring 19a has a limiting ring 231a, and the two ends of the first nylon bushing 18a are respectively connected to the limiting portion 17d, The limit ring 231a corresponds, and the two ends of the second nylon bushing 18b correspond to the limit portion 17d and the snap ring 19a respectively. The rotating shaft 231 is provided with a locking groove 20a capable of accommodating part of the snap ring 19a.

Both the first nylon bushing 18a and the second nylon bushing 18b are made of nylon, which has the advantages of wear resistance, high mechanical strength, good chemical stability, and light weight. The inner diameter of the first nylon bushing 18a is larger than the inner diameter of the second nylon bushing 18b. Both the tapered surfaces a of the first nylon bushing 18a and the second nylon bushing 18b are inclined inwardly towards the main body 17a of the slider. The inner walls of the first nylon bushing 18 a and the second nylon bushing 18 b are attached to the outer wall of the rotating shaft 231 , so that there is a gap between the rotating shaft 231 and the slider main body 17 a. The nylon bushing is used to reduce the friction between the rotating shaft 231 and the sliding block 17 .

In the process of installing the armrest assembly 2, first place the first nylon bushing 18a and the second nylon bushing 18b in the slider main body 17a in the first shaft groove 17b and the second shaft groove 17c, when placing the first nylon bushing Both the shaft sleeve 18a and the second nylon sleeve 18b have the tapered surface a facing the slider main body 17a, which is convenient for installation; then the rotating shaft 231 is inserted into the slider 17, so that the limit ring 231a of the rotating shaft 231 restricts the first nylon sleeve 18a Move axially along the rotating shaft 231; finally, fix the snap ring 19a in the slot 20a so that it restricts the axial movement of the second nylon sleeve 18b and also restricts the axial movement of the rotating shaft 231, completing the installation.

In the process of rotating the connecting body 23, the rotating shaft 231 is hinged to the slider 17 through the first nylon bushing 18a and the second nylon bushing 18b, and a certain gap is maintained between the rotating shaft 231 and the slider main body 17a, thereby The wear of the rotating shaft 231 and the slider 17 is reduced, so that the treadmill has the beneficial effects of quietness, smoothness and non-damage when folded.

Please refer to Fig. 10, the frame 14 includes the first controllable gas spring 3 for driving the slider 17, one end of the first controllable gas spring 3 is connected and fixed with the frame 14, the other end of the first controllable gas spring 3 is connected with the slider Block 17 is connected and fixed. The frame 14 also includes a second controllable gas spring 3 a respectively hinged to the bottom of the frame 14 and the upright 22 near the connecting body 23 . The second controllable gas spring 3 a is used to drive the upright 22 to rotate the connecting body 23 .

Both the first controllable gas spring 3 and the second controllable gas spring 3 a are composed of a cylinder body 31 and a piston rod 32 , and a button 33 is provided at the end of the piston rod 32 . The piston rod 32 of the second controllable gas spring 3a is provided with a first connecting piece 321, the piston rod 32 is hinged with the frame 14 through the first connecting piece 321, and the cylinder body 31 of the second controllable gas spring 3a is provided with a second connecting piece 311 , the cylinder body 31 is hinged to the column 22 through the second connecting piece 311 .

Referring to Fig. 13 and Fig. 14, the treadmill also includes a control device 4 for controlling the locking and/or unlocking of the first controllable gas spring 3 and the second controllable gas spring 3a. The connected fixing sleeve 41 , the driving block 42 hinged inside the fixing sleeve 41 , the wire 43 used to pull the driving block 42 to squeeze the button 33 , and the wire 43 is connected and fixed to one end of the driving block 42 . The fixing sleeve 41 is provided with a first through hole 411 corresponding to the wire 43 .

Please refer to Fig. 15, Fig. 16, Fig. 17, Fig. 18, Fig. 19, the control device 4 also includes a switch 5 connected with a plurality of metal wires 43, the switch 5 includes a base 51 connected and fixed with the frame 14 and a hinged joint with the base 51. Pull ring 52, the pull ring 52 is hinged with the base 51 through the limit post 521 at the end, the pull ring 52 is provided with a rotating part 522 connected and fixed with the end of the metal wire 43, and the rotating part 522 can move along the axis of the stop post 521 To rotate, the base 51 is provided with an arc chute 512 corresponding to the limiting post 521 , and the arc chute 512 can limit the rotation angle of the rotating part 522 .

Two sides of the base 51 are provided with second through holes 511 respectively corresponding to the plurality of metal wires 43 , and there are four second through holes 511 . There is a tension spring 523 between the middle part of the pull ring 52 and the base 51 , and the tension spring 523 is used to keep the pull ring 52 close to the base 51 all the time, so as to reset the rotating part 522 .

When the pull ring 52 is pulled, the rotating part 522 drives the metal wire 43 to move, and the indirect wire 43 makes the driving block 42 squeeze the button 33, thereby simultaneously performing the first controllable gas spring 3 and the second controllable gas spring 3a. unlock. When the pull ring 52 is released, the tension spring 523 resets the rotating part 522, so that the first controllable gas spring 3 and the second controllable gas spring 3a are automatically locked.

When the drive block 42 presses the button 33, the first controllable gas spring 3 and the second controllable gas spring 3a are in an unlocked state; when the drive block 42 releases the push button 33 , the first controllable gas spring 3 and the second controllable gas spring 3a are in a locked state.

In the process of folding or unfolding the armrest assembly 2, the wire 43 is pulled by the pull ring 52, so that the driving block 42 squeezes the button 33, and at this moment, the first controllable gas spring 3 and the second controllable gas spring 3a are simultaneously unlocked, and then You can start to adjust the angle of the column 22 relative to the frame 14, push or pull the armrest 21 to rotate the column 22 to a suitable position, loosen the pull ring 52, and the button 33 will automatically rebound under the internal pressure of the cylinder body 31. The first The controllable gas spring 3 and the second controllable gas spring 3 a are simultaneously locked, thereby limiting the rotation of the column 22 .

The treadmill includes a treadmill main body 1, an armrest assembly 2 dynamically connected with the treadmill main body 1, the armrest assembly 2 includes an armrest 21, a column 22, and a connecting body 23, and the treadmill main body 1 includes a frame 14. The middle part of the frame 14 is provided with a slideway 143, the slideway 143 is provided with a slider 17 corresponding to the connecting body 23, and the frame 14 is provided with a first controllable gas spring 3 for driving the slider 17 . The second controllable gas spring 3a for rotating the connecting body 23, the first controllable gas spring 3 and the second controllable gas spring 3a are all made up of a cylinder body 31 and a piston rod 32, and the piston rod 32 is provided with a button 33, and the treadmill also includes a control device 4 for controlling the locking and/or unlocking of the first controllable gas spring 3 and the second controllable gas spring 3a.

Please refer to FIG. 20 and FIG. 21 , in the second embodiment of the present invention, a drop-shaped frame cover 142 is fixed at the front end of the frame 14 , and a ring-type switch 5 is provided on the bottom of the frame 14 close to the slideway 143 .

The switch 5 includes a circular ring 5a and a concentrating block 5b fixed to the frame 14. The concentrating block 5b uses four pull holes 5c corresponding to the metal wire 43. By pulling the circular ring 5a, the first controllable gas spring 3 and the second controllable gas spring 3 are controlled. The gas spring 3a is unlocked, and after the ring 5a is loosened, the first controllable gas spring 3 and the second controllable gas spring 3a reset and lock under the action of their own air pressure.

Please refer to Fig. 22, Fig. 23, Fig. 24 and Fig. 25. When the first controllable gas spring 3 is fully extended and the second controllable gas spring 3a is fully compressed, the frame 14 and the column 22 are at 0°, and the rotation The shaft 231 is located at the front end of the sliding hole 23a, and the armrest 21 overlaps the frame 14. At this time, the treadmill is in a horizontal storage state; when the first controllable gas spring 3 is fully compressed and the second controllable gas spring 3a is fully extended, The frame 14 and the column 22 are at 120°, and the rotating shaft 231 is located at the rear end of the sliding hole 23a, and the armrest 21 is above the front portion of the frame 14. At this time, the treadmill is in a running state; when the first controllable gas spring 3. When the second controllable gas spring 3a is partially compressed or stretched, the frame 14 and the column 22 are at 82°, and the armrest 21 is above the middle of the frame 14. At this time, the treadmill is in the middle of walking and /or or reversing state; when the frame 14 and the column 22 are at 20°, and the armrest 21 is above the rear portion of the frame 14, the treadmill is in an upright storage state.

During use, for example, when the frame 14 and the column 22 are at 82°, and the armrest 21 is above the middle of the frame 14, the treadmill can walk backwards and forwards at the same time, and two users are respectively on both sides of the armrest 21, start the motor Afterwards, one user is walking, another user is walking backward, and the user who is walking is walking, because the pedal 131 is flush with the upper surface of the running belt 11, thereby avoiding the danger caused by hitting the heel. The pedal 131 can also prevent the user from stepping on air, which ensures the safety of the user. And the user who walks backwards, because the motor is placed behind and there is no pedal 131, in the process of walking backwards, the heel will not be hindered, and the fall that may be caused by the different frictional forces of the insteps is avoided.

In the process of folding or unfolding the armrest assembly 2, the wire 43 is pulled by the switch 5, so that the driving block 42 squeezes the button 33, and at this moment, the first controllable gas spring 3 and the second controllable gas spring 3a are simultaneously unlocked, and then You can start to adjust the angle of the column 22 relative to the frame 14, push or pull the armrest 21 to rotate the column 22 to a suitable position, loosen the wire 43, and the button 33 will automatically rebound under the internal pressure of the cylinder body 31. The control gas spring 3 and the second control gas spring 3 a are locked simultaneously, thereby limiting the rotation of the column 22 .

Please refer to Fig. 26, in the third embodiment of the present invention, the end of the rotating shaft 231 is provided with an external thread, and a nut 2311 is provided between the second nylon bushing 18b and the snap ring 19a, and the nut 2311 can be threadedly connected with the rotating shaft 231 . The nut 2311 makes the rotating shaft 231 more closely connected with the slider.

Please refer to FIG. 27 , in the fourth embodiment of the present invention, there are two limiting notches 232 , and the angle between adjacent limiting notches 232 is 30°. During the process of rotating the upright column 22 , fewer limit gaps 232 are helpful to determine the angle, avoiding frequent adjustment of the angle.

Please refer to Fig. 28, in the fifth embodiment of the present invention, the treadmill main body 1 also includes a pair of elastic cords 6 detachably connected to the ends of the motor housing 13, and a u-shaped limiting plate 7 for fixing the toes, The end of the elastic cord 6 is provided with a gripping portion 61 for gripping, and the u-shaped limiting plate 7 is made of plastic. The u-shaped limiting plate 7 has an easily deformable elastic portion 71 .

During use, this treadmill can not only realize the functions of forward walking, backward walking, running and simultaneous forward walking and backward walking, but also can carry out strength training through the elastic cord 6, for example, the user holds the grip part 61 for side Exercise with flat raises, which stimulate the triceps of the arms.

Sit-ups can be carried out through the u-shaped limiting plate 7, first lie flat on the ground, bend the knees, then put the soles of the feet against the motor housing 13, and simultaneously press the elastic part 61 of the u-shaped limiting plate 7 with the toes to make the elastic part 61 deformation, thereby fixing the entire sole of the foot, and finally you can start to move. The treadmill can also perform push-ups, and its users only need to support their palms on one end of the frame 14 to perform push-ups.

In the present invention, the treadmill has the beneficial effect of walking forward and backward at the same time through the rear motor, and the backward walking is safer.

In the present invention, the slider is hinged to the connecting body through the rotating shaft, so that the treadmill has the beneficial effect of adjusting the angle of the column and the position of the armrest.

In the present invention, the unlocking and locking of the gas spring are controlled by the switch, so that the treadmill has the beneficial effects of controllable folding angle and good fixing effect of the armrest assembly.

In the present invention, the first nylon bushing and the second nylon bushing with a tapered surface make the slider easier to install or maintain, and at the same time make the rotating shaft and the slider more tightly combined, and have a quiet, smooth, and not easy to damage when rotating. Beneficial effect.

In the present invention, a pair of elastic ropes and a U-shaped limiting plate respectively connected and fixed to the end of the motor casing make the treadmill have the beneficial effects of diversified functions and good exercise effect.

In the present invention, through the angle-adjustable armrest assembly, the treadmill has multiple use modes of forward walking, backward walking, forward walking and backward walking by two people at the same time, and running.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any skilled person familiar with the profession , without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but as long as it does not depart from the technical solution of the present invention, the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (10)

1. a kind of treadmill of four controllable gas spring structure adjustable handrail double modes includes treadmill main body and the treadmill The armrest assembly of the dynamic connection of main body, the armrest assembly include a column, the handrail being arranged between a pair of of the upper end of the column and It is fixed on the connector of column lower end, the treadmill main body includes frame, which is characterized in that be equipped with and slide in the middle part of the frame Road, is equipped with sliding block be rotatablely connected with the connector in the slideway, and the frame is equipped with for driving the of the sliding block One controllable gas spring, the second controllable gas spring for rotating connector, the treadmill further include for controlling described first Controllable gas spring, the control device second controllable gas spring locking and/or unlocked.

2. the treadmill of four controllable gas springs structure adjustable handrail double mode according to claim 1, which is characterized in that institute The first controllable gas spring is stated to be connected and fixed with the frame, the sliding block respectively, second controllable gas spring respectively with it is described Frame, the column lower hinge.

3. the treadmill of four controllable gas springs structure adjustable handrail double mode according to claim 1, which is characterized in that institute The rotary shaft that connector is equipped with adjustable-angle is stated, the sliding block is hinged by the rotary shaft and the connector, the rotation Shaft is equipped with multiple radial spacing breach, and the sliding block is equipped with limited post corresponding with the spacing breach, the limited post One end be equipped with reset spring.

4. the treadmill of four controllable gas springs structure adjustable handrail double mode according to claim 1, which is characterized in that institute Stating treadmill main body further includes treadbelt, the motor positioned at the treadbelt rear end, has outside the motor and to be connected and fixed with frame Motor casing, the motor casing are equipped with the foot pedal concordant with the treadbelt upper surface.

5. the treadmill of four controllable gas springs structure adjustable handrail double mode according to claim 1, which is characterized in that institute Control device is stated to include the fixing sleeve connecting with the piston rod thread, the drive block hinged with the fixing sleeve inside, be used for Pull the drive block to squeeze the wire of the button, the switch connecting with the more wires, the switch include with The pedestal and the pull ring hinged with the pedestal that the frame is connected and fixed, the pull ring is equipped with to be connected with the wire ends Connect fixed rotating part.

6. the treadmill of four controllable gas springs structure adjustable handrail double mode according to claim 4, which is characterized in that institute It states treadbelt and is equipped with a pair of roller bearing hinged with the frame both ends respectively, the treadbelt is sheathed on outside a pair of roller bearing, described For motor for driving the roller bearing to rotate, the motor is equipped with the transmission belt being sequentially connected with the roller bearing.

7. the treadmill of four controllable gas springs structure adjustable handrail double mode according to claim 6, which is characterized in that one To the race plate having between the roller bearing for damping.

8. the shock-damping structure of treadmill according to claim 1, which is characterized in that first controllable gas spring, Second controllable gas spring is made of cylinder body, piston rod, and the end of the piston rod is equipped with button.

9. the treadmill of four controllable gas springs structure adjustable handrail double mode according to claim 5, which is characterized in that institute Pedestal is stated equipped with arc chute corresponding with the limited post, the arc chute can limit the rotation angle of the rotating part.

10. the treadmill of four controllable gas springs structure adjustable handrail double mode according to claim 8, which is characterized in that When the drive block presses the button, first controllable gas spring, second controllable gas spring are in the unlocked state, When the drive block releases the pressing to the button, first controllable gas spring, second controllable gas spring are in Lock state.