CN108939399A - Adjustable pulling rope for exercising arm strength - Google Patents

Abstract

The invention discloses an adjustable pulling rope for exercising arm strength, which belongs to the technical field of fitness equipment. The technical solution is characterized in that it comprises a device main body, a pulling rope assembly, a bottom seat pillow, a chair back, and a cushion assembly. A large pulling rope, a medium pulling rope and a small pulling rope are fixedly connected to the left and right sides of the pulling rope assembly, and the three pulling ropes are symmetrically distributed. An inclined rod is welded to the front end of the device main body, a thigh pressing rod is welded to the top end of the inclined rod, a calf pad is fixedly connected to the bottom of the inclined rod, a pulling rope assembly is fixedly connected to the middle part of the device main body, a head pillow is fixedly connected to the rear end of the pulling rope assembly, and a bottom seat pillow is welded to the bottom of the device main body. The device is provided with different pulling strengths. Three pulling ropes, namely a large pulling rope, a medium pulling rope and a small pulling rope, are provided at the rear end of the chair back, and the pulling forces required for the three pulling ropes are different.

Description

A kind of adjustable tension pull rope for body-building arm strength exercise

technical field

The invention relates to the technical field of body-building equipment, in particular to an adjustable tension pull cord for body-building arm strength exercises.

Background technique

The adjustable pull rope for fitness arm strength exercise is a kind of fitness pull rope for exercising human arm strength. The effect of exercising arm strength is achieved by continuously pulling the pull ring on the pull rope with the human arm, but the existing pull rope can only be set with one The tension rope cannot change the magnitude of the tension.

The Chinese patent with the authorized notification number CN204932712U discloses a fitness drawstring. The device uses a drawstring and a pulley device, and a bracelet is bent at the top of the drawstring. The user pulls the bracelet by hand, so that the device can be used anytime, anywhere. It is used for fitness exercises, but this kind of pull rope can only be provided with one kind of pull rope, and the size of the pull force cannot be changed.

Contents of the invention

Aiming at the deficiencies in the prior art, the object of the present invention is to provide an adjustable pull cord for body-building arm strength exercises: to solve the problem that the pull force cannot be changed.

Above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

An adjustable pull cord for bodybuilding arm strength exercises, including a device main body, a bottom seat pillow, a chair back and a cushion assembly, the left and right sides of the draw cord assembly are fixedly connected with a large pull cord, a medium pull cord and a small pull cord. and the large-size, medium-size and small-size stay ropes are distributed symmetrically. The front end of the main body of the device is welded with a diagonal rod, and the top of the diagonal rod is welded with a thigh pressing rod. The device The middle part of the main body is fixedly connected with a drawstring assembly, the top of the drawstring assembly is fixedly connected with a head rest, the bottom of the main body of the device is welded with a bottom seat pillow, and the bottom of the bottom seat rest is fixedly connected with a rear support , the front end of the bottom seat pillow is fixedly connected to the front support, the rear end of the pull cord assembly is fixedly connected to the seat back, the rear end of the seat back is clamped with a screw hole, and the bottom of the device main body is clamped A cushion assembly is connected, and the bottom of the cushion assembly is clamped with an angle adjuster fixing block.

Through the above-mentioned technical scheme, the device is provided with different tensile strengths, and three pull cords are provided at the rear end of the chair back, including a large pull cord, a medium pull cord and a small pull cord, and the pulling force required by the three pull cords Different, the pull force required by the large pull rope is greater than that of the medium pull rope, and the pull force required by the medium pull rope is greater than that of the small pull rope. Ordinary users generally start exercising with the small pull rope at the beginning. After exercising for a period of time, change to a medium-sized pull rope. Users can choose different pull ropes for exercise according to their own physical conditions. This setting enables the device to adjust the pulling force.

Further, the middle part of the thigh pressing rod is fixedly connected with a thigh cushion, and there are two thigh cushions, the overall thigh cushion is in the shape of an "ellipse", and the two thigh cushions are left and right symmetrical along the diagonal bar set up.

Through the above technical scheme, the thigh cushion can protect the thigh when the thigh pressing bar presses the thigh, preventing the user's thigh from directly contacting the thigh pressing bar when lifting and falling. The thighs cause wear and tear, resulting in poor exercise comfort. This setting can improve the user's exercise comfort.

Further, the bottom of the oblique bar is welded with a calf pressing rod, and the middle part of the calf pressing rod is fixedly connected with a calf cushion, and there are two calf cushions, and the two calf cushions are about the calf pressing The left and right rods are symmetrical, and the two calf cushions are in the shape of an "ellipse".

Through the above technical scheme, the calf pressing rod can cooperate with the thigh pressing rod when the user is exercising to fix the user's entire leg, preventing the leg from shifting and causing a safety accident when doing arm stretching. The middle part of the calf pressing bar of the device is also provided with a calf cushion, which can prevent the direct contact between the calf and the calf pressing bar, and improves the comfort.

Further, the end of the large pull cord is connected with a pull ring through a pull rod, and there are several pull rings, and several pull rings are distributed to connect with the medium pull cord and the small pull cord through the pull rod, and pull The ring is unevenly arranged.

Through the above-mentioned technical scheme and the pull ring, it is convenient for the user to stretch different types of pull ropes. The device sets the surface of the pull ring into an uneven shape, which can greatly improve the friction on the surface of the pull ring, so that the user can It is more stable when grasping the pull ring, so as to avoid losing your hand when doing stretching exercises and causing muscle strain.

Further, the bottom of the bottom seat pillow is welded with spring struts, the bottom of the spring struts is fixedly connected to the rear support, and the spring struts are arranged in double rings, and the connection between the spring struts and the rear support has no gap.

Through the above technical solution, the spring struts and the bottom seat pillow can buffer the pressure of the body on the bottom seat pillow when the user is doing stretching exercises with all his strength. The spring struts will be compressed under pressure, relieving the pressure and avoiding direct pressure. Acting on the user's buttocks, the blood in the buttocks does not circulate, causing physical discomfort and improving comfort, and the spring struts of the device are arranged in double rings, which can greatly improve the bearing capacity of the spring struts.

Further, the rear end of the chair back is fixedly connected with a drawstring fixing plate, and there are two drawcord fixing plates, and the two drawcord fixing plates are arranged symmetrically, and the drawcord fixing plates are arranged with double-layer boards.

Through the above technical scheme, the drawstring fixing plate can play the role of fixing the stay rope. The drawstring fixing plate of the device is provided with two and symmetrically arranged, and a single stay rope fixing plate only fixes three stay ropes, which can prevent pulling The pulling force of the rope is too large, and the stay rope fixing plate cannot be fixed to cause a safety accident, and the stay rope fixing plate of the device adopts a double-layer board setting, which can ensure the firmness of the stay rope fixing plate.

Further, the rear end of the cushion assembly is fixedly connected with an angle adjuster, and the bottom of the angle adjuster is welded with an angle adjuster fixing block.

Through the above-mentioned technical scheme and the angle adjuster, the fixed angle of the chair back can be adjusted when the user is exercising arm strength, which is convenient for adapting to the usage habits of different groups of people, greatly improving the practicability of the device, and adjusting the angle of the chair back can make the The exerciser achieves optimal comfort and improves the effect of exercise.

In summary, the present invention has the following beneficial effects:

1. There are three pull ropes at the back end of the chair back: a large pull rope, a medium pull rope and a small pull rope, and the pulling force required by the three pull ropes is different. The pull rope of the size is larger, and the pull force required for the pull rope of the medium size is larger than that of the small size. Ordinary users generally start exercising from the small size of the rope at the beginning, and then change to the medium size after a period of exercise. You can choose different pull ropes according to your own physical conditions;

2. Through the spring strut, the bottom seat pillow can buffer the body’s pressure on the bottom seat pillow when the user is doing stretching exercises with all his strength. The spring strut will be compressed under pressure to relieve the pressure and prevent the pressure from directly acting on the user The buttocks, causing the blood in the buttocks not to circulate, causing physical discomfort and improving comfort;

3. The drawstring fixing plate can play the role of fixing the drawstring. The drawstring fixing plate of the device is provided with two and symmetrically arranged. A single drawstring fixing plate only fixes three drawstrings, which can prevent the pull of the drawstring If the force is too large, the drawstring fixing plate cannot be fixed and cause a safety accident;

4. Through the angle adjuster, the fixed angle of the chair back can be adjusted when the user is exercising the arm strength, which is convenient to adapt to the usage habits of different groups of people and greatly improves the practicability of the device.

Description of drawings

Fig. 1 is the schematic diagram of the front view structure of the present embodiment;

Fig. 2 is a side view structural schematic diagram of the seat pillow at the bottom of the present embodiment;

Fig. 3 is a schematic diagram of the structure of the rear end of the chair in this embodiment;

Fig. 4 is a schematic structural diagram of the cushion assembly of the present embodiment.

In the figure: 1, device main body; 101, inclined rod; 102, thigh pressing rod; 103, thigh cushion; 104, calf pressing rod; 105, calf cushion; 2, drawstring assembly; 201, head pillow ;202, large pull rope; 203, pull ring; 204, medium pull rope; 205, small pull rope; 3, bottom seat pillow; 301, spring support; 302, rear support; 4, chair back; 401, drawstring fixing plate; 402, screw hole; 5, seat cushion assembly; 501, angle regulator fixing block; 502, angle regulator.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one,

As shown in Fig. 1-4, a kind of body-building arm strength exercise is used adjustable tension drawstring, comprises device main body 1, bottom seat pillow 3, chair back 4 and seat cushion assembly 5, and the left and right sides of described drawstring assembly 2 are all fixed A large stay cord 202, a medium stay cord 204 and a small stay cord 205 are connected, and the large stay cord 202, the medium stay cord 204 and the small stay cord 205 are symmetrically distributed, and the front end of the device main body 1 is welded There is an oblique rod 101, the top of the oblique rod 101 is welded with a thigh pressing rod 102, the middle part of the device main body 1 is fixedly connected with a drawstring assembly 2, and the top of the drawstring assembly 2 is fixedly connected with a headrest 201 The bottom of the main body 1 of the device is welded with a bottom pillow 3, the bottom of the bottom pillow 3 is fixedly connected with a rear support 302, and the front end of the bottom pillow 3 is fixedly connected with a front support 303, so The rear end of the pull cord assembly 2 is fixedly connected with the chair back 4, the rear end of the chair back 4 is clamped with a screw hole 402, the bottom of the device main body 1 is clamped with a cushion assembly 5, and the seat cushion assembly 5 An angle adjuster fixing block 501 is clamped on the bottom.

Embodiment two,

An adjustable tension pull cord for bodybuilding arm strength exercises, comprising a device main body 1, a bottom seat pillow 3, a chair back 4 and a cushion assembly 5, the left and right sides of the pull cord assembly 2 are fixedly connected with large pull cords 202, The medium stay cord 204 and the small stay cord 205, and the large stay cord 202, the medium stay cord 204 and the small stay cord 205 are symmetrically distributed, and the front end of the device main body 1 is welded with a diagonal bar 101, and the diagonal The top of the rod 101 is welded with a thigh pressing rod 102, the middle part of the device main body 1 is fixedly connected with a drawstring assembly 2, the top of the drawstring assembly 2 is fixedly connected with a headrest 201, and the bottom of the device main body 1 The bottom seat pillow 3 is welded, the bottom of the bottom seat pillow 3 is fixedly connected with a rear support 302, the front end of the bottom seat pillow 3 is fixedly connected with a front support 303, and the rear end of the pull cord assembly 2 The chair back 4 is fixedly connected, the rear end of the chair back 4 is clamped with a screw hole 402, the bottom of the device main body 1 is clamped with a cushion assembly 5, and the bottom of the cushion assembly 5 is clamped with an angle adjuster to fix Block 501.

The middle part of the thigh pressing rod 102 is fixedly connected with a thigh cushion 103, and there are two thigh cushions 103, the thigh cushion 103 is in the shape of an "ellipse" as a whole, and the two thigh cushions 103 are along the diagonal bar 101 It is symmetrically set up left and right.

Embodiment three,

An adjustable tension pull cord for bodybuilding arm strength exercises, comprising a device main body 1, a bottom seat pillow 3, a chair back 4 and a cushion assembly 5, the left and right sides of the pull cord assembly 2 are fixedly connected with large pull cords 202, The medium stay cord 204 and the small stay cord 205, and the large stay cord 202, the medium stay cord 204 and the small stay cord 205 are symmetrically distributed, and the front end of the device main body 1 is welded with a diagonal bar 101, and the diagonal The top of the rod 101 is welded with a thigh pressing rod 102, the middle part of the device main body 1 is fixedly connected with a drawstring assembly 2, the top of the drawstring assembly 2 is fixedly connected with a headrest 201, and the bottom of the device main body 1 The bottom seat pillow 3 is welded, the bottom of the bottom seat pillow 3 is fixedly connected with a rear support 302, the front end of the bottom seat pillow 3 is fixedly connected with a front support 303, and the rear end of the pull cord assembly 2 The chair back 4 is fixedly connected, the rear end of the chair back 4 is clamped with a screw hole 402, the bottom of the device main body 1 is clamped with a cushion assembly 5, and the bottom of the cushion assembly 5 is clamped with an angle adjuster to fix Block 501.

The bottom of the inclined bar 101 is welded with a calf pressing rod 104, and the middle part of the calf pressing rod 104 is fixedly connected with a calf cushion 105, and there are two calf cushions 105, and the two calf cushions 105 The left and right sides are symmetrical about the calf pressing bar 104, and the two calf pads 105 are in the shape of an "ellipse".

Embodiment 4, an adjustable tension pull cord for bodybuilding arm strength exercises, including a device main body 1, a bottom seat pillow 3, a chair back 4 and a cushion assembly 5, and the left and right sides of the pull cord assembly 2 are fixedly connected with large The drawstring 202, the medium drawstring 204 and the small drawstring 205, and the large drawstring 202, the medium drawstring 204 and the small drawstring 205 are symmetrically distributed, and the front end of the device main body 1 is welded with a diagonal bar 101 , the top of the inclined rod 101 is welded with a thigh pressing rod 102, the middle part of the main body 1 of the device is fixedly connected with a drawstring assembly 2, and the top of the drawstring assembly 2 is fixedly connected with a headrest 201, the device The bottom of the main body 1 is welded with a bottom seat pillow 3, the bottom of the bottom seat pillow 3 is fixedly connected with a rear support 302, the front end of the bottom seat pillow 3 is fixedly connected with a front support 303, and the drawstring assembly 2 is fixedly connected with a chair back 4, the rear end of the chair back 4 is clamped with a screw hole 402, the bottom of the device main body 1 is clamped with a cushion assembly 5, and the bottom of the seat cushion assembly 5 is clamped with a Angle adjuster fixing block 501 .

The end of the large pull rope 202 is connected with a pull ring 203 through a pull rod, the pull ring 203 is provided with several, and several pull rings 203 are distributed to connect with the medium pull rope 204 and the small pull rope 205 through the pull rod , and the pull ring 203 is unevenly arranged.

Embodiment five,

An adjustable tension pull cord for bodybuilding arm strength exercises, comprising a device main body 1, a bottom seat pillow 3, a chair back 4 and a cushion assembly 5, the left and right sides of the pull cord assembly 2 are fixedly connected with large pull cords 202, The medium stay cord 204 and the small stay cord 205, and the large stay cord 202, the medium stay cord 204 and the small stay cord 205 are symmetrically distributed, and the front end of the device main body 1 is welded with a diagonal bar 101, and the diagonal The top of the rod 101 is welded with a thigh pressing rod 102, the middle part of the device main body 1 is fixedly connected with a drawstring assembly 2, the top of the drawstring assembly 2 is fixedly connected with a headrest 201, and the bottom of the device main body 1 The bottom seat pillow 3 is welded, the bottom of the bottom seat pillow 3 is fixedly connected with a rear support 302, the front end of the bottom seat pillow 3 is fixedly connected with a front support 303, and the rear end of the pull cord assembly 2 The chair back 4 is fixedly connected, the rear end of the chair back 4 is clamped with a screw hole 402, the bottom of the device main body 1 is clamped with a cushion assembly 5, and the bottom of the cushion assembly 5 is clamped with an angle adjuster to fix Block 501.

The bottom of the bottom seat pillow 3 is welded with a spring strut 301, and the bottom of the spring strut 301 is fixedly connected with a rear support 302, and the spring strut 301 adopts a double ring arrangement, and the spring strut 301 and the rear support 302 There are no gaps in the connection.

Embodiment six,

An adjustable tension pull cord for bodybuilding arm strength exercises, comprising a device main body 1, a bottom seat pillow 3, a chair back 4 and a cushion assembly 5, the left and right sides of the pull cord assembly 2 are fixedly connected with large pull cords 202, The medium stay cord 204 and the small stay cord 205, and the large stay cord 202, the medium stay cord 204 and the small stay cord 205 are symmetrically distributed, and the front end of the device main body 1 is welded with a diagonal bar 101, and the diagonal The top of the rod 101 is welded with a thigh pressing rod 102, the middle part of the device main body 1 is fixedly connected with a drawstring assembly 2, the top of the drawstring assembly 2 is fixedly connected with a headrest 201, and the bottom of the device main body 1 The bottom seat pillow 3 is welded, the bottom of the bottom seat pillow 3 is fixedly connected with a rear support 302, the front end of the bottom seat pillow 3 is fixedly connected with a front support 303, and the rear end of the pull cord assembly 2 The chair back 4 is fixedly connected, the rear end of the chair back 4 is clamped with a screw hole 402, the bottom of the device main body 1 is clamped with a cushion assembly 5, and the bottom of the cushion assembly 5 is clamped with an angle adjuster to fix Block 501.

The rear end of the chair back 4 is fixedly connected with a drawstring fixing plate 401, two of the stay cord fixing plates 401 are arranged symmetrically, and the drawcord fixing plate 401 adopts a double-layer board set up.

Embodiment seven,

An adjustable tension pull cord for bodybuilding arm strength exercises, comprising a device main body 1, a bottom seat pillow 3, a chair back 4 and a cushion assembly 5, the left and right sides of the pull cord assembly 2 are fixedly connected with large pull cords 202, The medium stay cord 204 and the small stay cord 205, and the large stay cord 202, the medium stay cord 204 and the small stay cord 205 are symmetrically distributed, and the front end of the device main body 1 is welded with a diagonal bar 101, and the diagonal The top of the rod 101 is welded with a thigh pressing rod 102, the middle part of the device main body 1 is fixedly connected with a drawstring assembly 2, the top of the drawstring assembly 2 is fixedly connected with a headrest 201, and the bottom of the device main body 1 The bottom seat pillow 3 is welded, the bottom of the bottom seat pillow 3 is fixedly connected with a rear support 302, the front end of the bottom seat pillow 3 is fixedly connected with a front support 303, and the rear end of the pull cord assembly 2 The chair back 4 is fixedly connected, the rear end of the chair back 4 is clamped with a screw hole 402, the bottom of the device main body 1 is clamped with a cushion assembly 5, and the bottom of the cushion assembly 5 is clamped with an angle adjuster to fix Block 501.

The rear end of the cushion assembly 5 is fixedly connected with an angle adjuster 502 , and the bottom of the angle adjuster 502 is welded with an angle adjuster fixing block 501 .

The specific implementation process, first, the user first sits on the bottom seat pillow 3, puts the thigh close to the thigh pressing rod 102, and the calf close to the calf pressing rod 104, the thigh cushion 103 of the device can be pressed against the thigh pressing rod 102 When the thigh is worn, the thigh pad 103 plays a role in protecting the thigh, preventing the user's thigh from directly contacting the thigh pressing rod 102 when lifting and falling, causing abrasion to the thigh and causing poor comfort during exercise. This setting can To improve the user's exercise comfort, the calf pressing rod 104 can cooperate with the thigh pressing rod 102 when the user is exercising to fix the user's entire leg, preventing the leg from shifting and causing safety problems when doing arm stretching. Accident, the middle part of the calf pressing rod 104 of this device is also provided with calf pad 105, can prevent the direct contact of calf and calf pressing rod 104, has improved comfort. The rear end of the chair back is provided with three stay cords of a large stay cord 202, a medium stay cord 204 and a small stay cord 205, and the required pulling force of the three stay cords is different. The medium-sized pull rope 204 is larger, and the pull force required for the medium-sized pull rope 204 is greater than that of the small-sized pull rope 205. Ordinary users generally start exercising with the small pull rope 205 at the beginning, and then change to the pull rope after a period of exercise. The medium-sized drawstring 204, users can choose different drawstrings according to their own physical conditions; through the spring support 301, the bottom seat pillow can buffer the pressure of the body on the bottom seat pillow when the user is doing stretching exercises with all his strength , the spring strut 301 will be compressed under the pressure, relieve the pressure effect, avoid the pressure directly acting on the user's buttocks, cause the blood in the buttocks not to circulate and cause physical discomfort, and improve the comfort; The effect of stay cord, the stay cord fixing plate 401 of this device is provided with two and is arranged symmetrically, and single stay cord fixing plate 401 only fixes three stay cords, can prevent the pulling force of stay cord from being too large, and stay cord fixing plate 401 fixes Can not cause safety accidents; through the angle adjuster 502, the fixed angle of the chair back can be adjusted when the user performs arm strength exercises, which is convenient to adapt to the usage habits of different groups of people and greatly improves the practicability of the device.

This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

Claims (8)

1. a kind of practice of body-building arm strength adjustable drag drawstring, including apparatus main body (1), base part seat rest the head on (3), the chair back (4) and seat Pad assembly (5), it is characterized in that: being fixedly connected to large size drawstring (202) at left and right sides of the lanyard assembly (2), medium size is drawn Rope (204) and small size drawstring (205), and large size drawstring (202), medium size drawstring (204) and small size drawstring (205) are divided in symmetrical Cloth, the front end of described device main body (1) are welded with brace (101), and the top of the brace (101) is welded with the pressed bar of thigh (102), it is fixedly connected with lanyard assembly (2) in the middle part of described device main body (1), the top of the lanyard assembly (2) is fixed to be connected It is connected to head headrest (201), the bottom of described device main body (1) is welded with base part seat pillow (3), the bottom of the base part seat pillow (3) Portion is fixedly connected with rear portion support (302), and the front end of the base part seat pillow (3) is fixedly connected with front support (303), the drawing The rear end of rope component (2) is fixedly connected with the chair back (4), and the rear end of the chair back (4) is connected with screw hole (402), described device The bottom of main body (1) is connected with cushion component (5), and the bottom of the cushion component (5) is connected with angle demodulator fixed block (501).

2. a kind of body-building arm strength practice adjustable drag drawstring according to claim 1, it is characterized in that: the thigh is pressed It is fixedly connected in the middle part of bar (102) thigh bed course (103), and there are two thigh bed course (103) settings, thigh bed course (103) Whole is in " ellipse " shape, and two thigh bed courses (103) are along brace (101) symmetrical setting.

3. a kind of body-building arm strength practice adjustable drag drawstring according to claim 1, it is characterized in that: the brace (101) bottom is welded with the pressed bar of shank (104), is fixedly connected with shank bed course in the middle part of the pressed bar of shank (104) (105), and there are two shank bed course (105) settings, described two shank bed courses (105) are about the pressed bar of shank (104) left and right Symmetrically, and two shank bed courses (105) are in " ellipse " shape.

4. a kind of body-building arm strength practice adjustable drag drawstring according to claim 1, it is characterized in that: the large size drawstring (202) end is connected with pull ring (203) by pull rod, and the pull ring (203) is provided with several, and several pull rings (203) distribution is connect by pull rod with medium size drawstring (204) and small size drawstring (205), and pull ring (203) is set in uneven It sets.

5. a kind of body-building arm strength practice adjustable drag drawstring according to claim 1, it is characterized in that: the base part seat is rested the head on (3) bottom is welded with spring strut (301), and the bottom of the spring strut (301) is fixedly connected with rear portion support (302), And spring strut (301) is to be arranged using Crossed Circle, and spring strut (301) and the junction of rear portion support (302) are seamless Gap.

6. a kind of body-building arm strength practice adjustable drag drawstring described in -5 according to claim 1, it is characterized in that: the chair back (4) rear end is fixedly connected with drawstring fixed plate (401), and there are two drawstring fixed plate (401) settings, and two drawstrings are solid Fixed board (401) is symmetrical arranged, and drawstring fixed plate (401) is arranged using doubling plate.

7. a kind of body-building arm strength practice adjustable drag drawstring described in -6 according to claim 1, it is characterized in that: the cushion group The rear end of part (5) is fixedly connected with angle demodulator (502), and the bottom of the angle demodulator (502) is welded with angular adjustment Device fixed block (501).

8. a kind of application method of body-building arm strength practice adjustable drag drawstring described in -6 according to claim 1, it is characterized in that: Firstly, user is first sitting on base part seat pillow 3, by thigh close to the pressed bar 102 of thigh, shank is close to the pressed bar 104 of shank, the dress The thigh bed course 103 set, can be when the pressed bar 102 of thigh pushes down thigh, and thigh bed course 103 plays the role of protecting thigh, It prevents the thigh of user when lifting and falling and the pressed directly contact of bar 102 of thigh, thigh is caused to wear, leads to exercise Comfort level is bad, and the exercise comfort level that user can be improved in this kind setting can be in user movement by the pressed bar 104 of shank The pressed bar 102 of Shi Peihe thigh, the entire leg of user is fixed, and is prevented when doing arm strength stretching, and leg, which shifts, makes At safety accident, the middle part of the pressed bar 104 of the shank of the device is also equipped with shank bed course 105, can prevent shank and shank The direct contact of pressed bar 104, improves comfort level；The rear end of the chair back is provided with large size drawstring 202,204 and of medium size drawstring 205 3 drawstrings of small size drawstring, and pulling force required for three kinds of drawstrings is different, pulling force wall medium size required for large size drawstring 202 Wanting for drawstring 204 is big, and medium size drawstring 204 is bigger than pulling force required for small size drawstring 205, and ordinary user is generally at the beginning It is first taken exercise since small size drawstring 205, changes medium size drawstring 204 again after tempering a period of time, user can be according to itself body Condition selects different drawstrings；By spring strut 301, base part seat pillow can rise when user does extensional motion with all strength The effect for the pressure rested the head on to buffering body to base part seat, spring strut 301, which is under pressure, will do it compression, relieve stress effect, It avoids pressure from directly acting on the buttocks of user, causes the stasis of buttocks to cause the discomfort of body, improve comfort； By drawstring fixed plate 401, fixed pulling rope can be played the role of, there are two the settings of drawstring fixed plate 401 of the device and right Claim setting, single drawstring fixed plate 401 only fixes three drawstrings, can prevent too big, the drawstring fixed plate 401 of pullling power of drawstring It is fixed incessantly to cause safety accident；It, can be when user carries out arm strength exercise to the fixed angles of the chair back by angle demodulator 502 Degree is adjusted.