CN101822887B - Body-building chair - Google Patents

Abstract

The utility model provides a body-building chair, includes the support chair frame, locates seat, the back support on the support chair frame and locates the back on the back support, back support and support chair frame swing joint are equipped with the first canceling release mechanical system that can make the back support reset on the support chair frame, its characterized in that: the backrest at least comprises an upper backrest plate and a lower backrest plate, and each backrest plate is movably connected to the backrest support. The backrest at least comprises an upper backrest plate and a lower backrest plate, wherein each backrest plate is movably connected to the backrest support, and when the waist of a person is in a forward-leaning fitness state, the upper backrest plate and the lower backrest plate of the fitness chair can be completely attached to the back of the person from top to bottom, so that the fitness chair conforms to the ergonomic design and is beneficial to waist fitness.

Description

a fitness chair

Technical field:

The invention relates to a fitness chair, in particular to a fitness chair capable of performing waist, shoulder and neck training at the same time. the

Background technique:

At present, people (office workers, scientific research designers, students, drivers, etc.) who sit for a long time due to work and living habits usually experience soreness, swelling, tiredness, and pain in the neck, shoulders, and waist (lower back). In other cases, this is because the muscle is stretched by holding a certain action for a long time, which reduces the elasticity and blood supply of the muscle, resulting in an uncomfortable feeling. At this time, the discomfort of these muscles will gradually disappear. However, due to work and living habits, many people do not exercise for a long time or do not have the time and conditions to exercise, which forces the muscles to lose their good elasticity and become stiff. Tiredness, pain with pinched nerves. If the spine is not normal, it will cause the nerves in the spine to be compressed, causing more nerve and muscle problems. the

In order to enable people to carry out fitness exercises at any time, a fitness chair with both the function of an office chair and the function of waist fitness has emerged as the times require, so that modern people can also engage in fitness exercises during busy work, so as to achieve simultaneous fitness and improve work efficiency. the goal of. The fitness chair generally includes a support chair frame, a seat and a backrest arranged on the support chair frame, the backrest is movably connected with the support chair frame, and the support chair frame is provided with a resetting mechanism that can reset the backrest. But there is following defective in this body-building chair: 1, the backrest of body-building chair is the vertical shape backboard of one-piece molding, and when people carried out body-building to waist, people's back generally will overcome the active force of backrest resetting mechanism and move from front to back. , so that the back changes repeatedly from the initial state of leaning forward to the final state of leaning backward. However, when the person's back is in the initial state of leaning forward, the entire back of the person will bend slightly forward and present a certain arc, Because the backrest is integrally formed, the backrest cannot be fully fitted with the entire back of the human body at this time, which does not conform to ergonomic design and is not conducive to waist fitness; 2. Similarly, the backrest cannot be fitted with the waist, and the same It is not conducive to waist fitness; 3. The fitness function is single, without neck and shoulder fitness functions.

Invention content:

The object of the present invention is to provide a fitness chair. When the waist of a person is leaning forward, the backrest can completely fit the back of the person, which conforms to the ergonomic design and is beneficial to waist fitness. the

A fitness chair, comprising a supporting chair frame, a seat arranged on the supporting chair frame, a backrest bracket and a backrest arranged on the backrest bracket, the backrest bracket is movably connected with the supporting chair frame, and the supporting chair frame is provided with a The first reset mechanism is characterized in that: the backrest at least includes an upper backboard and a lower backboard, the lower backboard includes a lower left backboard and a lower right backboard, and each backboard is movably connected to the backrest bracket. the

The backrest of the present invention at least includes an upper backboard and a lower backboard, and each backboard is movably connected to the backrest bracket. From top to bottom, it can fit the human back completely. At the same time, the left lower backrest and right lower backrest can comfortably fit the human waist from left to right. It conforms to the ergonomic design and is good for waist fitness. the

The upper backboard is pivotally connected between the two sides of the backrest bracket, the left lower backboard is installed on the left side of the backrest bracket through an automatically resettable spring hinge, and the right lower backboard is installed on the backrest bracket through an automatically resettable spring hinge On the right side, when people are exercising, the left lower backboard and the right lower backboard can comfortably fit the waist of the person from left to right, which conforms to the ergonomic design and is conducive to waist fitness. the

The left and right sides of the backrest bracket are equipped with a vertical square tube, and a lifting positioning adjustment knob is provided between the vertical square tube and the backrest bracket. The upper backboard is pivotally connected between the vertical square tubes, and the lower left backrest The board is installed on the left vertical square tube through the spring hinge that can be automatically reset, and the lower right backrest board is installed on the vertical square tube on the right side through the spring hinge that can be automatically reset. The lifting positioning adjustment knob can change the height of the backrest, which has a wide range of applications. the

The seat includes a seat frame and a seat plate arranged on the seat frame, the front end of the seat frame is pivotally connected with the seat connection hole supporting the chair frame, and the rear end of the seat frame is installed through the seat link rod and the seat link bar of the backrest bracket. Hole connection, when the person's back acts on the backrest and the backrest gradually moves from front to back, the backrest bracket drives the rear end of the seat frame to rise gradually through the seat linkage rod, thereby slowly adjusting the fitness personnel's body position, and expand the range of reclining of the backrest. the

The supporting chair frame is provided with a connecting frame pivot hole, and one end of a connecting frame is pivotally connected to the supporting chair frame through the pivoting hole, and the other end of the connecting frame is movably connected with a pedal frame, and the pedal frame is provided with Foot pedals, people can put their feet on the pedals when exercising, which is convenient and comfortable to use. the

The supporting chair frame has a panel on which a movable seat control part and a resetting torsion spring which can reset the movable seat control part are pivoted. There is also a pedal frame lifting motor and a toothed control pulley on the panel. The output end of the pedal frame lifting motor is connected to a threaded gear, and the threaded gear is meshed with the transmission gear on the toothed control pulley. , the support chair frame is provided with a guide pulley, the connecting frame is provided with a rope connection hole, one end of a pedal frame retractable rope is connected to the seat activity control part, and the other end of the pedal frame retractable rope After passing through the toothed control pulley and the guide pulley in turn, it is fixed on the connecting hole of the rope. When the pedal frame is lowered by the lifting motor, the retractable rope of the pedal frame can make the seat movable control part move forward. Tilting, so that the concave position of the seat movable control part is separated from the rear end surface of the seat frame, and the rear end of the seat frame is lowered downward, so that the waist or back of the bodybuilder can automatically tilt forward and prepare for waist training. the

The supporting chair frame is also provided with a first corner wheel, a second corner wheel and a second reset mechanism, and a wheel shaft is also provided on the pivot hole of the connecting frame of the supporting chair frame, and the two ends of the wheel shaft are respectively provided with handle ropes. Pulley, a synchronous wheel is arranged in the middle of the wheel shaft, one end of a connecting rope is connected with the second reset mechanism, and the other end of the connecting rope is wound on the synchronous wheel after passing through the first corner wheel and the second corner wheel in turn; the connecting frame There is a handle rope steering pulley and a handle socket hole, and the shoulder training handle is inserted into the handle socket hole through its insertion rod. The shoulder training handle is also provided with a handle rope connecting hole, and one end of the handle rope is wound around the handle rope. Pulley, the other end of the handle rope is set on the handle rope connection hole of the shoulder handle after passing through the handle rope turning pulley. When exercising the shoulders, you only need to put down the movable boards on both sides of the front end of the seat board, so that the two arms of the fitness personnel can be lowered vertically. The contraction drives the shoulder puller to overcome the force of the second reset mechanism and move upwards to the maximum extent, and then slowly relax the shoulder muscles, and the shoulder puller will return to the original state under the action of the second reset mechanism, so repeated movements can achieve The training of the shoulder muscles is fully functional. the

Both the first and second reset mechanisms are stretching oil cylinders, and the stretching oil cylinders include a cylinder body, a resistance adjusting device arranged on the cylinder body, and a piston rod that can move in the cylinder body, wherein the first reset mechanism There are two in total, which are respectively arranged on the left and right sides of the supporting chair frame. The rear side of the oil cylinder is also provided with a first installation sleeve and a second installation sleeve, the cylinder body of the second reset mechanism is sleeved on the first installation sleeve and the second installation sleeve, and the second installation sleeve is also provided with With the resistance display panel corresponding to the cylinder resistance of the second reset mechanism, the fitness personnel can change the resistance of each reset mechanism by adjusting the resistance adjusting device on each cylinder according to their own conditions. the

The rear side of the lower end of the vertical square tube of the backrest bracket is movably connected with a head leaning plate connecting frame, a reset torsion spring is arranged between the head leaning plate connecting frame and the vertical square tube, and a head resting plate connecting frame is provided with The head resting plate and the head force frame, the front end of the head force frame is provided with a soft device in contact with the human head, the upper end of the vertical square tube of the backrest bracket is provided with a horizontal square tube, and the horizontal square tube There is a synchronous shaft on the top, the two ends of the synchronous shaft are provided with winding wheels, the middle of the synchronous shaft is provided with friction wheels, and the synchronous shaft is also provided with a reset torsion spring that can reset the winding wheels. There is also a rubber friction resistance ring corresponding to the friction wheel, a resistance adjustment knob and a resistance ring reset spring acting on the resistance ring, one end of a resistance force transmission belt is wound on the winding wheel, and the resistance force transmission belt The other end is positioned on the connecting hole of the head resting plate connecting frame. When people want to exercise the neck, the occipital bone of the head is first in contact with the soft device, and then the contraction of the neck muscles overcomes the gap between the reset torsion spring, the friction wheel and the rubber friction resistance ring. The resistance between them drives the head frame to move backward to the maximum extent, and then slowly relaxes the neck muscles, so that the head frame returns to its initial state. Repeated movements like this can realize the fitness training of the neck, with complete functions In addition, according to the requirements of the bodybuilders themselves, they only need to turn the resistance adjustment knob on the resistance ring to change the resistance suffered during neck training. the

The head resting plate connecting frame is also provided with a connecting plate at the rear of the head leaning plate, and the connecting plate is provided with a turning control motor and a transmission gear of the head force frame, and the output shaft of the motor is provided with a screw thread Gears, threaded gears mesh with transmission gears, the rear end of the head force frame is provided with gears meshed with transmission gears, left and right handrails are also provided on the backrest bracket, and left handrails are provided with pedal frame lifting gears. The motor is electrically connected to the pedal frame down control key and the pedal frame up control key, and the right armrest is equipped with the head force frame forward flip control key and the head force Flip the control keys backwards. When pressing the forward or backward turning control key of the head support frame on the right armrest, the head support frame can be turned over automatically; The pedal frame can be automatically lifted and lowered, and the degree of automation is high. the

The connecting plate is also provided with a spring connecting hole, and a stretching return spring is arranged between the spring connecting hole and the head resting plate, and the head resting plate can be automatically reset by the effect of the stretching return spring. the

The fitness chair also includes a tripod, which is connected to the support chair frame through a controllable lifting oil cylinder, and the controllable lifting oil cylinder is provided with a lifting control rod,

The seat plate is provided with a safety belt, which is used to fix the thigh when the waist is heavily trained to prevent the thigh from being lifted, so that the whole waist training process is very stable and stressed, and the use is safe. the

Description of drawings:

Fig. 1 is a schematic diagram of the structure of the present invention. the

Fig. 2 is a schematic diagram of the second structure of the present invention. the

Fig. 3 is a schematic diagram of the assembly structure of the present invention. the

Fig. 4 is a schematic diagram of the seat structure of the present invention. the

Fig. 5 is a first schematic diagram of the assembly of the supporting chair frame and the backrest bracket of the present invention. the

Fig. 6 is a second schematic diagram of the assembly of the supporting chair frame and the backrest bracket of the present invention. the

Fig. 7 is a schematic diagram of the assembly structure of the backrest, the headrest and the head force frame of the present invention. the

Fig. 8 is a structural schematic diagram of the waist strengthening state of the present invention. the

Fig. 9 is a schematic diagram of the second structure of the waist invigorating state of the present invention. the

Fig. 10 is a structural schematic diagram of a healthy neck state of the present invention. the

Fig. 11 is a schematic diagram of the second structure of the waist invigorating state of the present invention. the

Detailed ways:

As shown in the figure, a fitness chair includes a tripod 1, a supporting chair frame 2 connected with the tripod 1, a seat arranged on the supporting chair frame 2, a backrest bracket 3 and a backrest arranged on the backrest bracket, and the tripod 1 is connected to the supporting chair frame 2 through a controllable lifting oil cylinder, the controllable lifting oil cylinder 11 is provided with a lifting control rod 12, and the backrest bracket 3 is movably pivotally connected to the pivoting hole 21 of the supporting chair frame 2 through the pivot hole 31 , the left and right sides of the support chair frame 2 are respectively provided with a stretching oil cylinder 4 that can reset the backrest support 3. The movable piston rod 43 in the cylinder, the tail end of the cylinder 41 is connected to the cylinder connection hole 22 supporting the chair frame 2, and one end of the piston rod 43 is connected to the piston rod connection hole 33 of the backrest bracket 3, and the backrest The left and right sides of the support 3 are equipped with a vertical square pipe 32, and a lifting positioning adjustment knob 34 is provided between the vertical square pipe 32 and the backrest support 3. The backrest at least includes an upper backboard 351, a lower left backboard 352 and The lower right backboard 353, wherein the upper backboard 351 is movably pivoted between the two vertical square tubes 32, the lower left backboard 352 is installed on the left vertical square tube 32 through the spring hinge 01 which can automatically reset, and the lower right backrest Plate 353 is also installed in the vertical square pipe 32 on the right side by the spring hinge 01 that can reset automatically. Described seat comprises seat frame 51 and is located on seat frame 51 upper seat board 521 and lower seat board 522, and lower seat board 522 is provided with safety belt 5221, and the front end of seat frame 51 and the seat connection hole 25 of support chair frame 2 Pivotally connected, the rear end of the seat frame 51 is connected with the seat linkage rod mounting hole 35 of the backrest bracket 3 through the seat linkage rod 511 . The supporting chair frame 2 is provided with a connecting frame pivot hole 26, and one end of a connecting frame 6 is pivotally connected to the supporting chair frame 2 through the pivoting hole 26, and the other end of the connecting frame 6 is movably connected with a pedal frame 61 , Pedal frame 61 is provided with pedal 62. Described support chair frame 2 has a panel 23, and this panel 23 is pivotally provided with seat movable control part 231 and the resetting torsion spring that can reset seat movable control part, and seat movable control part 231 is provided with a seat movable control part 231 when it resets to the vertical state. The concave position that can be offset against the rear end face of the seat frame 51 is also provided with a pedal frame lifting motor 232 and a tooth control pulley 233 on the panel 23, and the output end of the pedal frame lifting motor 232 is connected with a threaded gear. Engage with the transmission gear on the tooth control pulley 233, a guide pulley 24 is provided on the support chair frame 2, a rope connection hole 63 is provided on the connecting frame 6, and one end of a pedal frame retractable rope 02 is connected to the The other end of the seat movement control part 231 and the pedal frame retractable rope 02 passes through the tooth control pulley 233 and the guide pulley 24 in turn and is fixed on the rope connection hole 63 . Also be provided with left handrail 321 and right handrail 322 on described backrest bracket 3, left handrail 321 is provided with pedal frame lowering control key 3211 and pedal frame rising control key 3212 electrically connected with pedal frame lifting motor 232. the

The rear side of the support chair frame 2 is also provided with a first corner wheel 271, a second corner wheel 272, a first installation sleeve 281 and a second installation sleeve 282 of the oil cylinder, and a stretching oil cylinder 40 is installed on the first installation sleeve 281 and the second installation sleeve 282. On the second installation sleeve 282, the stretching oil cylinder 40 includes a cylinder body, a resistance adjusting device arranged on the cylinder body and a piston rod movable in the cylinder body. The resistance display panel corresponding to the cylinder block resistance of the oil extension cylinder 40 is also provided with a wheel shaft 261 on the pivot joint hole 26 of the connecting frame supporting the chair frame 2. A synchronous wheel 263 is provided, and one end of a connecting rope 03 is connected with the piston rod of the stretching oil cylinder 40, and the other end of the connecting rope 03 is wound on the synchronous wheel 263 after passing through the first corner wheel 271 and the second corner wheel 272 successively; The connecting frame 6 is provided with a handle rope turning pulley 64 and a handle socket hole 65, and the shoulder handle 7 is inserted in the handle socket hole 65 through its insertion rod. One end of the handle rope 04 is wound around the handle rope winding pulley 262, and the other end of the handle rope 04 is set on the handle rope connection hole 71 of the shoulder handle 7 after passing through the handle rope turning pulley 64, and the two sides of the front end of the upper seat plate 521 The movable plate 5211 corresponding to the shoulder-training handle 7 is pivotally connected. the

The rear side of the vertical square tube 32 lower end of the backrest bracket 3 is movably connected with a head leaning plate connecting frame 8, and a reset torsion spring is arranged between the head leaning plate connecting frame 8 and the vertical square tube 32, and the head leaning against the plate Connecting frame 8 is provided with head back plate 91 and head force frame 92, the front end of head force frame 92 is provided with the soft device 921 that contacts with human body head, and the vertical square tube 32 of described back support The upper end is provided with a horizontal square tube 320, and this horizontal square tube 320 is provided with a synchronous shaft 3201, and the two ends of this synchronous shaft 3201 are provided with winding wheel 3202, and the middle of synchronous shaft is provided with friction wheel 3203, and also on this synchronous shaft 3201 There is a reset torsion spring that can reset the winding wheel 3202, and the horizontal square tube 320 is also provided with a rubber friction resistance ring 3204 corresponding to the friction wheel 3203 and a resistance adjustment knob 3205 and resistance force acting on the resistance ring. Ring return spring 3206, one end of a resistance force transmission belt 05 is wound on the winding wheel 3202, and the other end of the resistance force transmission belt 05 is positioned on the connecting hole 81 of the head plate connecting frame 8. Also be provided with a connecting plate 93 at the rear of the head leaning plate 91 on the described head leaning plate connecting frame 8, be provided with head force frame turning control motor 931 and a transmission gear 932 on this connecting plate 93, this motor 931 The output shaft is provided with a threaded gear, the threaded gear meshes with the transmission gear 932, the rear end of the head frame 92 is provided with a gear 922 meshed with the transmission gear 932, and the connecting plate 93 is also provided with a spring Connecting hole 933, a stretch return spring 06 is located between the spring connecting hole 933 and the head backing plate 91, and the right handrail 322 of the backrest bracket is provided with a head that is electrically connected with the head force frame turning control motor 931. The forward turning control key 3221 of the part bearing frame and the backward turning control key 3222 of the head bearing frame. the

The using method of the present invention is as follows:

1. Independent implementation of various functions

1. Waist strengthening method: the bodybuilder sits on the upper seat board 521 and buckles the safety belt 5221, puts both hands on the left and right handrails, and makes his back lean against the upper backboard 351, the lower left backboard 352 and the lower right backboard 353, Then press down the control key 3211 on the pedal frame on the left armrest 321 to lower the pedal frame 61 and contact the ground. While on the ground, the seat movable control part 231 also falls forward simultaneously, thereby the concave position of the seat movable control part 231 is separated from the rear end surface of the seat frame 51, and the rear end of the seat frame 51 is lowered, so that the waist of the body-building personnel can be lowered. Or the back and the entire backrest of the fitness chair are automatically tilted forward to prepare for waist training. At this time, the upper backboard and the left and right lower backboards are completely fitted with the back and waist of the fitness personnel from top to bottom. At the same time, the left lower backboard From left to right, the lower right backboard forms a fitting shape that matches the waist of the fitness personnel, as shown in Figure 8. At this time, it is the initial position before the preparation exercise for waist training, and then the backrest gradually moves toward Finally, rotate to the maximum extent, as shown in Figure 9, and then slowly relax the waist muscles, allowing the backrest to return to the initial position before the exercise, so that the waist muscles can be trained repeatedly. By adjusting the resistance adjusting device 42 of the stretching oil cylinder 4, the resistance of the backward movement of the backboard can be changed, so as to achieve the purpose of gradually increasing the resistance to train the waist muscles. After the training is completed, press the pedal on the left handrail 321 by hand Press the frame rising control key 3212 to put the pedal frame 61 away. the

2. Shoulder strengthening method: the bodybuilder sits on the upper seat plate 521 and buckles the safety belt 5221, presses the pedal frame lowering control key 3211 on the left armrest 321, so that the pedal frame 61 is lowered and contacts the ground, and then puts both feet Put it on the pedal 62, put down the movable plate 5211 on both sides of the front end of the seat plate, so that the two arms of the body-building personnel can be vertically lowered. 7 Pull out from the handle socket hole 65, and then the contraction of the shoulder muscles drives the practice of shoulder pull-hands 7 to overcome the force of the stretching oil cylinder 40 and move upwards to the maximum extent, and then slowly relax the shoulder muscles, then practice shoulder pull-hands 7 Under the effect of the stretching oil cylinder 40, the original state is returned to, so repeated movements can realize the training of the shoulder muscles. By adjusting the resistance adjusting device of the stretching oil cylinder 40, the resistance suffered when the shoulder handle 7 moves upwards can be changed, so as to achieve the purpose of gradually increasing the resistance to train the shoulder muscles. After the training is completed, press the left handrail 321 on Press the pedal frame rising control key 3212, and the pedal frame 61 can be packed up. the

3. Neck strengthening method: the bodybuilder sits on the upper seat board 521 and buckles the safety belt 5221, puts both hands on the left and right handrails, and makes his back lean against the upper backboard 351, the lower left backboard 352 and the lower right backboard 353, Then press the head force frame on the right armrest 322 to turn over the control key 3221 forward, the head force frame 92 is turned forward, and the soft device 921 on the head force frame 92 is aligned with the body-building personnel's head The occipital bone phase contact, as shown in Figure 10, is the initial position before the preparatory exercise of neck training at this moment, then overcome the described reset torsion spring and the friction wheel 3203 and the rubber friction resistance ring 3204 through the contraction of the neck muscles. The resistance between them can drive the head frame 92 to move backward to the maximum extent, as shown in Figure 11, and then slowly relax the neck muscles, so that the head frame 92 can return to the initial state. Fitness training for the neck. In addition, according to the requirements of the bodybuilders themselves, they only need to turn the resistance adjustment knob 3205 on the resistance ring 3204 to change the resistance suffered during neck training, so as to achieve the purpose of gradually increasing the resistance to train the neck muscles. Press the head force frame on the right armrest 322 with hand after training and turn over the control key 3222 backwards, the head force frame 92 can be retracted backward. the

2. Simultaneous implementation of waist and neck health

Body-builders sit on the upper seat board 521 and buckle the safety belt 5221, put their hands on the left and right handrails, and make their backs lean against the upper backboard 351, the lower left backboard 352 and the lower right backboard 353, and then press the right handrail 322 The head force frame on the head is turned over control key 3221 forward, and the head force frame 92 is turned forward, and the soft device 921 on the head force frame 92 is contacted with the occipital bone position of the body-building personnel's head, and then Press down the control key 3211 on the pedal frame on the left handrail 321 to lower the pedal frame 61 and contact the ground. Simultaneously, the seat movable control part 231 also falls forward simultaneously, thereby the concave position of the seat movable control part 231 is separated from the rear end surface of the seat frame 51, and the rear end of the seat frame 51 is lowered, thereby the waist or The back and the entire backrest of the fitness chair are automatically tilted forward to prepare for waist training. At this time, the upper backboard and the left and right lower backboards are completely fitted with the back and waist of the fitness personnel from top to bottom. The lower right backboard forms a fitting shape matching the waist of the fitness personnel from left to right. At this time, it is the initial position before the preparation exercise for waist training, and then overcomes the reset torsion spring and friction wheel through the contraction of the neck muscles. 3203 and the resistance between the rubber friction resistance ring 3204 to drive the head force frame 92 to move backward to the maximum extent, and at the same time, the muscle contraction of the waist makes the backrest gradually rotate backward to the maximum extent, and then slowly relax the neck and Lumbar muscles, let the backrest and the head force frame 92 reset to the initial position before the preparation exercise, so that the training of the neck and waist muscles can be achieved by repeating, and when the training is completed, press the pedal frame on the left armrest 321 with hands The head force frame on the rising control key 3212 and the right armrest 322 flips the control key 3222 backwards, so that the pedal frame 61 and the head force frame 92 are all retracted. the

Claims (10)

1. A fitness chair, comprising a support chair frame, a seat located on the support chair frame, a backrest bracket and a backrest located on the backrest bracket, the backrest bracket is movably connected with the support chair frame, and the support chair frame is provided with a backrest that can The first reset mechanism for bracket reset is characterized in that: the backrest at least includes an upper backboard and a lower backboard, and the lower backboard includes a lower left backboard and a lower right backboard, and each backboard is movably connected to the backrest bracket. 2. A fitness chair according to claim 1, characterized in that: the upper backboard is pivotally connected between the two sides of the backrest bracket, and the left lower backboard is installed on the left side of the backrest bracket through a spring hinge that can automatically reset. On the side, the lower right backrest board is installed on the right side of the backrest bracket through the spring hinge that can be automatically reset. 3. A fitness chair according to claim 2, characterized in that: the left and right sides of the backrest bracket are provided with a vertical square tube, and a lifting positioning adjustment knob is provided between the vertical square tube and the backrest bracket , the upper backboard is pivotally connected between the vertical square tubes, the left lower backboard is installed on the left vertical square tube through an automatically reset spring hinge, and the right lower backboard is installed on the left vertical square tube through an automatically reset spring hinge. Right side vertical square tube. 4. A fitness chair according to claim 3, characterized in that: the seat comprises a seat frame and a seat plate arranged on the seat frame, the front end of the seat frame is pivotally connected with the seat connection hole supporting the chair frame, and the seat The rear end of the skeleton is connected with the seat link mounting hole of the back support through the seat link. 5. A fitness chair according to claim 4, characterized in that: the supporting chair frame is provided with a connecting frame pivot hole, and one end of a connecting frame is pivotally connected to the supporting chair frame through the pivoting hole, The other end of the connecting frame is movably connected with a pedal frame, and the pedal frame is provided with a pedal. 6. A kind of fitness chair according to claim 5, characterized in that: said supporting chair frame has a panel on which a seat movable control part and a resetting torsion spring capable of resetting the seat movable control part are pivoted, The seat movable control part is provided with a concave position that can be offset against the rear end face of the seat frame when it is reset to a vertical state, and a pedal frame lifting motor and a tooth control pulley are also provided on the panel, and the output end of the pedal frame lifting motor A threaded gear is connected, and the threaded gear meshes with the transmission gear on the tooth control pulley. A guide pulley is provided on the support chair frame, a rope connection hole is provided on the connecting frame, and one end of the rope is retracted by a pedal frame. Connected to the seat activity control part, the other end of the pedal frame retractable rope passes through the tooth control pulley and the guide pulley in turn and is fixed on the rope connection hole. 7. A fitness chair according to claim 6, characterized in that: the supporting chair frame is also provided with a first corner wheel, a second corner wheel and a second reset mechanism, and the connecting frame of the supporting chair frame is pivotally connected The hole is also provided with a wheel shaft, the two ends of the wheel shaft are respectively provided with handle rope winding wheels, the center of the wheel shaft is provided with a synchronous wheel, one end of a connecting rope is connected with the second reset mechanism, and the other end of the connecting rope passes through the first The corner wheel and the second corner wheel are wound on the synchronous wheel; the connecting frame is provided with a handle rope steering pulley and a handle socket hole, and the shoulder training handle is inserted in the handle socket hole through its insertion rod. There is a handle rope connection hole, one end of the handle rope is wound around the handle rope winding pulley, and the other end of the handle rope is set on the handle rope connection hole of the shoulder handle after passing through the handle rope turning pulley. The side movable hinge is connected with a movable plate corresponding to practicing shoulder handles. 8. A fitness chair according to claim 7, characterized in that: said first and second reset mechanisms are both stretching oil cylinders, and the stretching oil cylinders include a cylinder body, a resistance adjusting device arranged on the cylinder body and A piston rod that can move in the cylinder, wherein there are two first reset mechanisms, which are respectively arranged on the left and right sides of the supporting chair frame, and the tail end of the cylinder is connected to the connecting hole of the cylinder supporting the chair frame. One end of the rod is connected with the connecting hole of the piston rod of the backrest bracket, and the rear side of the supporting chair frame is also provided with a first installation sleeve and a second installation sleeve of the oil cylinder, and the cylinder body of the second reset mechanism is sleeved on the first installation On the sleeve and the second installation sleeve, the second installation sleeve is also provided with a resistance display panel corresponding to the cylinder resistance of the second reset mechanism. 9. A kind of fitness chair according to claim 8, characterized in that: the rear side of the lower end of the vertical square tube of the backrest bracket is movably connected with a head-rest connecting frame, and the head-rest connecting frame is connected to the vertical side. A reset torsion spring is provided between the tubes, a head support plate and a head force frame are provided on the head support plate connecting frame, and a soft device that contacts the human head is provided at the front end of the head force support frame. The upper end of the vertical square tube of the back support is provided with a horizontal square tube, the horizontal square tube is provided with a synchronous shaft, the two ends of the synchronous shaft are provided with winding wheels, and the middle of the synchronous shaft is provided with a friction wheel There is a reset torsion spring that can reset the winding wheel, and the horizontal square tube is also provided with a rubber friction resistance ring corresponding to the friction wheel and a resistance adjustment knob and a resistance ring reset spring acting on the resistance ring. One end of the resistance power transmission belt is wound on the winding wheel, and the other end of the resistance power transmission belt is positioned on the connecting hole of the head resting plate connecting frame. 10. A fitness chair according to claim 9, characterized in that: said head rest board connecting frame is also provided with a connecting plate behind the head rest board, and the head rest board is provided with a force bearing for the head. Frame flip control motor and a transmission gear, the output shaft of the motor is provided with a threaded gear, the threaded gear meshes with the transmission gear, the rear end of the head force frame is provided with a gear meshed with the transmission gear, the backrest The bracket is also provided with left and right handrails, the left handrail is provided with the pedal frame lowering control key and the pedal frame rising control key electrically connected with the pedal frame lifting motor, and the right armrest is provided with the flipping control electric motor of the head force frame. The head force frame with electromechanical connection is turned forward and the head force frame is turned backward; a spring connection hole is also provided on the connection plate, and a tension return spring is arranged between the spring connection hole and the head. Between the leaning plates; the lower part of the supporting chair frame is also connected with a tripod through a controllable lifting oil cylinder, and a lifting control rod is arranged on the controllable lifting oil cylinder; a safety belt is also arranged on the seat plate.

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