CN110237497B - Multifunctional body-building device - Google Patents
Multifunctional body-building device Download PDFInfo
- Publication number
- CN110237497B CN110237497B CN201910567731.7A CN201910567731A CN110237497B CN 110237497 B CN110237497 B CN 110237497B CN 201910567731 A CN201910567731 A CN 201910567731A CN 110237497 B CN110237497 B CN 110237497B
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- Prior art keywords
- rod
- lying bed
- rotating support
- top plate
- rotary supporting
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/068—User-manipulated weights using user's body weight
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/02—Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles)
- A63B23/0205—Abdomen
- A63B23/0211—Abdomen moving torso with immobilized lower limbs
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/03575—Apparatus used for exercising upper and lower limbs simultaneously
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
- A63B23/0482—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs primarily by articulating the hip joints
- A63B23/0488—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs primarily by articulating the hip joints by spreading the legs
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
- A63B23/1209—Involving a bending of elbow and shoulder joints simultaneously
- A63B23/1218—Chinning, pull-up, i.e. concentric movement
Abstract
The invention discloses a multifunctional body builder which comprises a base, wherein a lying bed is arranged on the base, two sides of the lying bed are respectively connected with a rotating support rod in a shaft mode, a top plate is arranged above the lying bed, two guide sleeves are respectively arranged at positions, close to the middle, of two sides of the top plate, the end portion of the rotating support rod is connected with one end of a pull rope, and the other end of the pull rope penetrates through the guide sleeves and is connected with a handle, so that the multifunctional body builder is convenient to grasp. The rotary supporting rods are fixed, so that a human body lies on a lying bed, the training of sit-up can be performed, the handles can be tightly held by two hands, the upper body of the human body is pulled up by using arm strength, and the arm strength can be exercised; fixing one of the rotary supporting rods at a certain position, fixing the other rotary supporting rod without fixing, fixing two feet on the two rotary supporting rods respectively, and pulling a handle connected with the unfixed rotary supporting rod to realize muscle-stretching training on legs while exercising arm strength; the multifunctional training device has multiple functions and can train multiple parts.
Description
Technical Field
The invention relates to the technical field of fitness equipment, in particular to a multifunctional fitness device.
Background
In the modern society, the rhythm of life of people is faster and faster, and particularly white-collar workers in large cities have long working time and short rest time every day. More and more young people want to develop a strong body, and gymnasiums in cities are more and more popular.
To the office clan of sitting for a long time, the belly is long proud easily, and people often utilize the equipment to sit up and carry out abdominal training when taking exercise, and the equipment of the seat of standing up of lying on back of current supplementary is comparatively simple, including a bed of lying that is used for flat lying, the one end of bed of lying is equipped with two horizontal poles that are used for fixed foot, and people carry out the action training of sit up on the bed of lying.
The applicant has found that the existing fitness apparatus has at least the following problems:
when abdominal training is carried out, only one training can be carried out, and other equipment also needs to be purchased if other training needs to be carried out, so that the occupied area is increased, and the cost is increased.
Disclosure of Invention
In view of this, the present invention provides a multifunctional exercise device, which solves the problems of one exercise being required during abdominal exercises, and other equipment being required to be purchased if other exercises are required, thereby increasing the occupied area and increasing the cost.
The present invention provides a multifunctional exercise device based on the above object, comprising:
a base;
the lying bed is arranged on the base and is used for lying the human body;
the end parts of the two rotary supporting rods are provided with cross rods for fixing feet, and the two rotary supporting rods are respectively connected to two sides of the lying bed in a shaft manner;
the two clamping plates are U-shaped, and the two clamping plate grooves respectively coat one end of the rotating support rod, which is far away from the cross rod;
the two through holes are respectively formed on the two support plates of the clamping plate;
the fixing holes are uniformly formed in the side face, close to the clamping plate, of the lying bed, are matched with the two through holes and are overlapped with each other at a certain angle;
the two bolts are U-shaped, and two support rods of the bolts can be inserted into the fixing holes through the two through holes to fix the rotating support rods;
the two spring seats are respectively arranged on two side surfaces of the lying bed close to the clamping plate;
the two pressing plates are respectively arranged at the bottoms of the two clamping plates, and the pressing plates and the spring seats are distributed in a right-angle manner;
the two arc springs are respectively arranged between the two spring seats and the two pressing plates;
the top plate is arranged above the lying bed;
the two guide sleeves are arranged at the positions, close to the middle part, of the top plate;
one end of each of the two pull ropes is connected with the end part of the rotating support rod, the connecting point is close to the cross rod, and the other end of each of the two pull ropes passes through the guide sleeve to hang down and is connected with a handle, so that the pull ropes are convenient to grasp.
Optionally, the bed of lying is kept away from the one end of rotatory branch install in through the pivot on the base, the back shaft is installed to the base bottom, the rotatable bracing piece of installing on the back shaft, the rotatable carrier plate that is connected with in bracing piece middle part, be equipped with on the base with a plurality of spacing grooves of carrier plate matched with.
Optionally, a guide rail groove is formed in the top plate, a rail wheel is installed in the guide rail groove, a supporting wheel is arranged at the bottom of the top plate, a connecting plate is connected between the supporting wheel and a wheel shaft of the rail wheel, an adjusting rod is fixedly connected to the middle of the connecting plate, an adjusting rotating wheel is installed at the end of the adjusting rod, a guide platform is arranged below the top plate, a guide hole is formed in the position, close to the guide sleeve, of the guide platform, the stay rope passes through the adjusting rotating wheel and the guide hole from the guide sleeve, the adjusting rod on the two sides of the adjusting rotating wheel limits the deviation of the stay rope.
Optionally, the end of the adjusting rope is connected with a cross bolt, and the base is provided with three buckles for clamping the cross bolt.
Optionally, a fixed pulley is arranged at a position of the top plate close to the buckle.
Optionally, an elastic cushion is arranged at the end part of the lying bed far away from the rotating support rod.
From the above, the multifunctional body builder provided by the invention comprises a base, wherein a lying bed is installed on the base, two sides of the lying bed are respectively connected with a rotating support rod in a shaft mode, a top plate is arranged above the lying bed, two guide sleeves are respectively arranged at positions, close to the middle, of two sides of the top plate, the end portion of the rotating support rod is connected with one end of a pull rope, and the other end of the pull rope penetrates through the guide sleeves and is connected with a handle, so that the multifunctional body builder is convenient to grasp. When the device is used, the rotary supporting rod is fixed, then a human body lies on a lying bed, the training of sit-up can be performed, the handles can be tightly held by two hands at the moment, the waist and the abdomen are not forced, the upper body of the human body is pulled up by using arm strength, and the arm strength can be exercised; one of the rotary supporting rods is fixed at a certain position, the other rotary supporting rod is not fixed, two feet are respectively fixed on the two rotary supporting rods, a handle connected with the unfixed rotary supporting rod is pulled, the arc can exercise the arm strength of a human body, one foot of the human body is lifted in the pulling process, when the foot is lifted to form a certain angle with the other foot, the muscle stretching effect can be achieved, the muscle stretching training can be carried out on the legs while the arm strength is exercised; the body-building function of a plurality of positions of a plurality of human bodies is realized, the functions are multiple, and other body-building equipment does not need to be bought additionally.
Drawings
FIG. 1 is a schematic side view of a multi-functional exercise apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
fig. 4 is a schematic front view of a multi-functional body-building apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
As one embodiment of the invention, as shown in the figure, a multifunctional body builder comprises a base 1, a lying bed 2 is mounted on the base 1 and used for lying on the human body, two sides of the lying bed 2 are respectively connected with a rotating support rod 3 in a shaft mode, the end part of the rotating support rod 3 is provided with a cross rod 4 used for fixing feet, the end part of one end, far away from the cross rod 4, of the rotating support rod 3 is coated with a clamping plate 5, the clamping plate 5 is U-shaped, the end part of the cross rod 4 is coated in a groove of the clamping plate 5, two through holes 6 are respectively formed in the two U-shaped supporting plates of the clamping plate 5, the side surface, close to the clamping plate 5, of the lying bed 2 is uniformly provided with a plurality of fixing holes 8, the fixing holes 8 are matched with the through holes 6, the fixing holes 8 are mutually overlapped when a certain angle is formed on the rotating support rod 3, a plug 7 is inserted into the fixing holes 8, the plug 7 is U-shaped, two branches of plug 7 are via two through-hole 6 inserts in the fixed orifices 8, it is right rotatory branch 3 fixes, lie and be close to of bed 2 two spring holders 9, two are still installed respectively to two sides of splint 5 two clamp plates 10 are installed respectively to the bottom plate of splint 5, clamp plate 10 with spring holder 9 is the right angle and distributes, two clamp plate 10 and two be connected with arc spring 11 between the spring holder 9 respectively, 2 tops of lying bed are equipped with roof 15, the position that the roof 15 both sides are close to the middle part is equipped with two uide bushing 13 respectively, rotatory branch 3 is close to the end connection of horizontal pole 4 has the one end of stay cord 13, and the other end of stay cord 13 certainly uide bushing 13 passes and is connected with the handle, the gripping of being convenient for. When the bed is used, the rotating support rod 3 is rotated to a proper position, the plug 7 is inserted into the fixing hole 8 from the through hole 6, the rotating support rod 3 is fixed, then a human body lies on the lying bed 2, feet are fixed on the cross rod 4, the training of sit-up can be carried out, at the moment, the handles 14 can be tightly held by two hands, the waist and the abdomen are not forced, the upper body of the human body is pulled up by using arm strength, and the arm strength can be exercised; fixing one of the rotary supporting rods 3 at a certain position, not fixing the other rotary supporting rod 3, enabling a human body to lie on the lying bed 2, sitting on the lying bed 2, fixing two feet on the cross rods 4 of the two rotary supporting rods 3 respectively, pulling the handle 14 connected with the unfixed rotary supporting rod 3, enabling the pull force of the arc-shaped spring 11, enabling the gravity of the rotary supporting rods 3 and the gravity of the legs to act on the handle 14, exercising the arm strength of the human body, lifting one foot of the human body in the pulling process, playing a role of pulling a tendon when the foot is lifted to form a certain angle with the other foot, and exercising the leg while exercising the arm strength; realizes the body building function on a plurality of parts of the human body, has multiple functions and does not need to buy other body building equipment additionally.
In this embodiment, the bed 2 is kept away from the one end of swivel strut 3 install in through pivot 101 on the base 1, back shaft 102 is installed to base 1 bottom, the rotatable bracing piece 103 of installing on the back shaft 102, the rotatable carrier plate 104 that is connected with in bracing piece 103 middle part, be equipped with on the base 1 with a plurality of spacing grooves 105 of carrier plate 104 matched with. The degree of difficulty of sit-up can be adjusted by rotating the angle of the lying bed 2, and the angle of the lying bed 2 can be changed by adjusting the angle of the supporting rod 103 and inserting the supporting plate 104 into the proper limit groove 105.
In this specific embodiment, a guide rail groove 16 is formed in the top plate 15, a rail wheel 17 is installed in the guide rail groove 16, a support wheel 18 is arranged at the bottom of the top plate 15, a connecting plate 19 is connected between the support wheel 18 and a wheel shaft of the rail wheel 17, an adjusting rod 20 is fixedly connected to the middle of the connecting plate 19, an adjusting rotating wheel 21 is installed at the end of the adjusting rod 20, a guide platform 22 is arranged below the top plate 15, a guide hole 23 is formed in the position, close to the guide sleeve 13, of the guide platform 20, the pull rope 12 passes through the adjusting rotating wheel 21 from the guide sleeve 13 and penetrates through the guide hole 23, the adjusting rods 20 on the two sides of the adjusting rotating wheel 21 limit the deviation of the pull rope 12, and an adjusting rope 24 is fixedly connected to the connecting plate 19. The adjusting rope 24 is pulled to enable the rail wheel 17 to move along the guide rail groove 16, the adjusting rotating wheel 21 pulls the pull rope 12, the drooping height of the pull rope 12 can be adjusted, and the pull rope can be held by different people.
In this embodiment, the end of the adjusting rope 24 is connected with a cross bolt 26, and the base 1 is provided with three buckles 27, and in some other embodiments, the number of the buckles may be changed according to actual needs. The cross bolt 26 is inserted into different buckles 27, so that different heights of the handle 14 can be controlled, and the adjustment is convenient.
In this embodiment, a fixed pulley 25 is disposed on the top plate 15 near the buckle 27. The adjustment cord 24 is guided.
In this embodiment, an elastic pad 201 is disposed at an end of the lying bed 2 away from the rotating rod 3 to cushion the neck of the human body and protect the head.
The working principle of the invention is as follows: when the bed is used, the rotating support rod 3 is rotated to a proper position, the plug 7 is inserted into the fixing hole 8 from the through hole 6, the rotating support rod 3 is fixed, then a human body lies on the lying bed 2, feet are fixed on the cross rod 4, the training of sit-up can be carried out, at the moment, the handles 14 can be tightly held by two hands, the waist and the abdomen are not forced, the upper body of the human body is pulled up by using arm strength, and the arm strength can be exercised; fixing one of the rotary supporting rods 3 at a certain position, not fixing the other rotary supporting rod 3, enabling a human body to lie on the lying bed 2, sitting on the lying bed 2, fixing two feet on the cross rods 4 of the two rotary supporting rods 3 respectively, pulling the handle 14 connected with the unfixed rotary supporting rod 3, enabling the pull force of the arc-shaped spring 11, enabling the gravity of the rotary supporting rods 3 and the gravity of the legs to act on the handle 14, exercising the arm strength of the human body, lifting one foot of the human body in the pulling process, playing a role of pulling a tendon when the foot is lifted to form a certain angle with the other foot, and exercising the leg while exercising the arm strength; realizes the body building function on a plurality of parts of the human body, has multiple functions and does not need to buy other body building equipment additionally.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims), is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. A multi-functional exercise machine, comprising:
a base;
the lying bed is arranged on the base and is used for lying the human body;
the end parts of the two rotary supporting rods are provided with cross rods for fixing feet, and the two rotary supporting rods are respectively connected to two sides of the lying bed in a shaft manner;
the two clamping plates are U-shaped, and the two clamping plate grooves respectively coat one end of the rotating support rod, which is far away from the cross rod;
the two through holes are respectively formed on the two support plates of the clamping plate;
the fixing holes are uniformly formed in the side face, close to the clamping plate, of the lying bed, are matched with the two through holes and are overlapped with each other at a certain angle;
the two bolts are U-shaped, and two support rods of the bolts can be inserted into the fixing holes through the two through holes to fix the rotating support rods;
the two spring seats are respectively arranged on two side surfaces of the lying bed close to the clamping plate;
the two pressing plates are respectively arranged at the bottoms of the two clamping plates, and the pressing plates and the spring seats are distributed in a right-angle manner;
the two arc springs are respectively arranged between the two spring seats and the two pressing plates;
the top plate is arranged above the lying bed;
the two guide sleeves are arranged at the positions, close to the middle part, of the top plate;
one end of each pull rope is connected with the end part of the corresponding rotary supporting rod, the connecting point is close to the corresponding cross rod, and the other end of each pull rope is hung down from the corresponding guide sleeve and connected with a handle so as to be convenient to grasp;
the rotating support rod is rotated to a proper position, the plug is inserted into the fixing hole from the through hole, the rotating support rod is fixed, then a human body lies on a lying bed, feet are fixed on the cross rod, and the sit-up training can be carried out, at the moment, the handles are tightly held by the two hands, the waist and the abdomen are not forced, the upper body of the human body is pulled up by using arm strength, and the arm strength can be exercised; fix one of them rotating support pole in a fixed position, another rotating support pole is not fixed, the human body can lie and lie in bed this moment, also can sit on lying bed, fix two feet respectively on two rotating support pole's horizontal pole, the handle of unfixed rotating support pole is connected in the pulling, the pulling force of arc spring, the gravity of rotating support pole and leg acts on the handle, can temper human arm strength, the pulling in-process, a human foot is raised, when being raised to be certain angle with another foot, can play the effect of lacing wire, when realizing tempering arm strength, carry out the lacing wire training to the shank.
2. The multifunctional body builder of claim 1, wherein the end of the lying bed away from the rotating rod is mounted on the base through a rotating shaft, a supporting shaft is mounted at the bottom of the base, a supporting rod is rotatably mounted on the supporting shaft, a supporting plate is rotatably connected to the middle of the supporting rod, and a plurality of limiting grooves matched with the supporting plate are formed in the base.
3. The multifunctional body builder as claimed in claim 1, wherein the top plate has a guide groove, the guide groove has a rail wheel, the bottom of the top plate has a support wheel, a connecting plate is connected between the support wheel and the wheel shaft of the rail wheel, the middle of the connecting plate is fixedly connected with an adjusting rod, the end of the adjusting rod is provided with an adjusting wheel, the top plate has a guiding platform below, the guiding platform has a guiding hole near the guiding sleeve, the pull rope passes through the adjusting wheel from the guiding sleeve and the guiding hole, the adjusting rod on both sides of the adjusting wheel limits the deviation of the pull rope, and the connecting plate is fixedly connected with an adjusting rope.
4. The multifunctional body-building device of claim 3, wherein the end of the adjusting rope is connected with a cross bolt, and the base is provided with three buckles for clamping the cross bolt.
5. The multi-functional health machine of claim 4, wherein said top plate is provided with a fixed pulley at a position adjacent to said buckle.
6. The multifunctional body-building machine of claim 1, wherein the lying bed is provided with an elastic pad at the end far away from the rotating strut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910567731.7A CN110237497B (en) | 2019-06-27 | 2019-06-27 | Multifunctional body-building device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910567731.7A CN110237497B (en) | 2019-06-27 | 2019-06-27 | Multifunctional body-building device |
Publications (2)
| Publication Number | Publication Date |
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| CN110237497A CN110237497A (en) | 2019-09-17 |
| CN110237497B true CN110237497B (en) | 2021-08-27 |
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| CN201910567731.7A Active CN110237497B (en) | 2019-06-27 | 2019-06-27 | Multifunctional body-building device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111111102B (en) * | 2019-12-02 | 2021-03-02 | 河南职业技术学院 | Be applied to psychological fine arts painter's harmony trainer |
| CN114558278B (en) * | 2022-03-15 | 2023-03-28 | 长沙师范学院 | Comprehensive health training equipment and training method for obese children |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19744540A1 (en) * | 1997-10-09 | 1999-04-22 | Juergen Plaggemeier | Training appliance to strengthen back and arm muscles |
| TW386453U (en) * | 1999-06-16 | 2000-04-01 | Li Jian Sheng | The fitness equipment |
| CN201164688Y (en) * | 2008-01-18 | 2008-12-17 | 厦门宙隆运动器材有限公司 | Multifunctional supination bench |
| CN201164681Y (en) * | 2008-01-30 | 2008-12-17 | 绍博有限公司 | Combined body-building machine |
| CN102814024A (en) * | 2011-06-10 | 2012-12-12 | 李怀训 | Multifunctional energy-converting body-building device |
| CN202821892U (en) * | 2012-09-13 | 2013-03-27 | 刘金栋 | Hospital bed for neurology department |
| CN203280973U (en) * | 2013-05-17 | 2013-11-13 | 应锦烈 | Waist-straightening sit-up bench |
| CN204073274U (en) * | 2014-10-08 | 2015-01-07 | 分宜县好运来体育用品有限公司 | The comprehensive healthy flesh device of multipurpose |
| CN204655902U (en) * | 2015-05-17 | 2015-09-23 | 河南理工大学万方科技学院 | A kind of Multifunctional situp pad |
| CN204698947U (en) * | 2015-06-04 | 2015-10-14 | 曾静 | The convenient game-type of certainly lifting lifting lower limb for lumbar intervertebral disc treats bed special |
| CN106730580A (en) * | 2017-01-14 | 2017-05-31 | 中州大学 | A kind of accessory system for athletic training |
| CN109107105A (en) * | 2018-11-09 | 2019-01-01 | 湖南文理学院 | A kind of composite type sport teaching aid exercise device |
| CN109621323A (en) * | 2019-01-25 | 2019-04-16 | 哈尔滨学院 | For arm strength, the multifunctional equipment and training method of pectoralis major training |
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