CN113440788A - Track and field training device - Google Patents
Track and field training device Download PDFInfo
- Publication number
- CN113440788A CN113440788A CN202110763845.6A CN202110763845A CN113440788A CN 113440788 A CN113440788 A CN 113440788A CN 202110763845 A CN202110763845 A CN 202110763845A CN 113440788 A CN113440788 A CN 113440788A
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- plate
- track
- sliding
- rod
- training device
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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
- A63B5/00—Apparatus for jumping
- A63B5/16—Training devices for jumping; Devices for balloon-jumping; Jumping aids
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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
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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
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention relates to the technical field of track and field training and discloses a track and field training device which comprises an L-shaped training frame, wherein two sections of the training frame are a first plate and a second plate respectively; an elastic stretching mechanism is arranged on the first plate; the elastic stretching mechanism comprises two parallel mounting grooves formed in the first plate and two inlets formed in the outer surface of the first plate, the two inlets are respectively communicated with one ends of the two mounting grooves, a tension spring is fixed in each mounting groove, one end of each tension spring is connected with a connecting piece, and the tail ends of the two connecting pieces extend out of the inlets and are respectively connected to two ends of a movable rod; a binding mechanism is arranged on the second plate; the binding mechanism comprises two cavities arranged in the second plate and a central rotating shaft rotatably connected in the cavities. The multi-posture exercise device is simple in structure, convenient to use in multi-posture conversion mode, and capable of effectively exercising legs and arms of a user.
Description
Technical Field
The invention relates to the technical field of track and field training, in particular to a track and field training device.
Background
At present, the bounce force is the comprehensive embodiment of the strength of the whole body, running speed, reaction speed, body coordination, flexibility and flexibility.
For example, application No.: CN201710472446.8 relates to a bounce trainer, which comprises a base, wherein a vertical upright rod is arranged on the base, and a rod body of the upright rod is provided with a bearing in interference fit; the walking device comprises a motor, a walking wheel and a motor suspension rod, wherein one end of the motor suspension rod is fixedly connected with the outer ring of the bearing, the other end of the motor suspension rod is fixedly connected with the motor shell, and a motor shaft is connected with the walking wheel; still including the pole of sweeping of level setting, sweep the pole and pass through connecting device with running gear and be connected fixedly, when the motor rotates, motor, walking wheel, motor hang the pole and sweep the pole and can be circular motion around the pole setting.
Based on the search of the above-mentioned patent to and combine the equipment discovery among the prior art, above-mentioned equipment is when using, and the structure is complicated, and manufacturing cost is high, and current track and field training device, its structure is fixed, and the functionality is single, brings very big inconvenience for training teaching.
Disclosure of Invention
The present invention is directed to a track and field training device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a track and field training device comprises an L-shaped training frame, wherein two sections of the training frame are a first plate and a second plate respectively;
an elastic stretching mechanism is arranged on the first plate;
the elastic stretching mechanism comprises two parallel mounting grooves formed in the first plate and two inlets formed in the outer surface of the first plate, the two inlets are respectively communicated with one ends of the two mounting grooves, a tension spring is fixed in each mounting groove, one end of each tension spring is connected with a connecting piece, and the tail ends of the two connecting pieces extend out of the inlets and are respectively connected to two ends of a movable rod;
a binding mechanism is arranged on the second plate;
binding mechanism including set up two cavitys in the board two, rotate and connect and be in central pivot in the cavity, the winding up roller has been cup jointed in the outside of central pivot, and the coil of strip is established to the outside cover of winding up roller, and the end of the coil of strip in two cavitys stretches out board two respectively, and the connection can be dismantled to the two, and the outside cover of central pivot is equipped with spiral helicine return spring leaf.
As a further improvement of the above scheme, the movable rod is provided with two through holes, and the movable rod is provided with an annular tightening rope through the two through holes, the tightening rope on the same side of the movable rod is sleeved with two limiting blocks, the limiting blocks are provided with elastic pins so as to press the tightening rope passing through the limiting blocks, and the movable rod is a plastic rod and is provided with a groove on the outer side.
As a further improvement of the above scheme, the connecting piece is a nylon rope, the first plate is provided with an opening communicated with the mounting groove, the pressing plate is arranged above the opening one side in a rotating mode through a pin shaft, the inner side of the pressing plate is rotatably provided with a plurality of guide wheels, the bottom of the mounting groove is also provided with a plurality of guide wheels, and a guide gap for the connecting piece to penetrate is formed between the two guide wheels which are oppositely arranged.
As a further improvement of the scheme, one side of the second plate adjacent to the first plate is provided with a rectangular placing groove, one end of the placing groove is connected with a turnover plate through a pin shaft in a rotating mode, two first sliding grooves are symmetrically formed in one side of the turnover plate opposite to the placing groove, a sliding block is arranged in each first sliding groove in a sliding mode, an elastic restoring mechanism connected with the sliding block is further arranged in each first sliding groove, a first pull rod is connected to the sliding block through a pin shaft in a rotating mode, one end, far away from the corresponding sliding block, of each first pull rod is used for being connected with the second plate in a clamping mode, and the first pull rod can be rotatably contained in the first sliding grooves.
As the further improvement of above-mentioned scheme, the tank bottom symmetry of standing groove is equipped with two spouts two, all slides in every spout two and is equipped with the slider, is equipped with the elastic recovery mechanism who is connected with the slider in the spout two equally, rotates through the round pin axle on the slider that corresponds and is connected with pull rod two, and the one end that the slider was kept away from to pull rod two is used for with the returning face plate joint.
As a further improvement of the scheme, threaded holes are formed in the sliding blocks, positioning bolts are installed in the threaded holes, and the sliding blocks in the first sliding groove and the second sliding groove are fixed in position through the positioning bolts.
As a further improvement of the scheme, the outer ends of the binding bands are provided with quick connectors, and the two binding bands are clamped through the quick connectors.
As a further improvement of the scheme, the joint of the first plate and the second plate is rotatably installed on a hinge seat through a rotating shaft, the hinge seat is used for being fixed with the outside, and the tail ends of the corresponding first plate and the corresponding second plate are respectively fixed with a first supporting block and a second supporting block.
As a further improvement of the scheme, the pressing plate is in a transparent plate shape, and the movable end of the pressing plate and the bottom of the mounting groove are fixed through bolts.
As a further improvement of the scheme, the elastic restoring mechanism comprises a telescopic rod and a cylindrical spring sleeved outside the telescopic rod, the telescopic rod comprises a first sleeve rod and a second sleeve rod inserted in the first sleeve rod in a sliding mode, the tail end of the first sleeve rod is connected with the inner wall of the corresponding first sliding groove or the inner wall of the corresponding second sliding groove, the tail end of the second sleeve rod is connected with the sliding block, and two ends of the cylindrical spring are fixed to the outer walls of the first sleeve rod and the second sleeve rod respectively.
The invention has the beneficial effects that:
the training device comprises an L-shaped training frame, wherein the L-shaped training frame comprises a plate I and a plate II, an elastic stretching mechanism and a binding mechanism are respectively arranged on the plate I and the plate II, when the plate I is supported on the ground for use, the elastic stretching mechanism and the binding mechanism can be used for conveniently training the bounce of a human body, and a good training effect is achieved on leg muscles;
the L-shaped training frame provided by the invention can be horizontally arranged from ninety degrees to two plates by turning, and the tension spring in the mounting groove can be driven to stretch by pulling the movable rod through the hand, so that the effect of exercising the arms of a human body is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic view of the present invention in a horizontal configuration;
FIG. 2 is a schematic view of the structure of the roll-over panel of FIG. 1 after deployment in accordance with the present invention;
FIG. 3 is a schematic view of the second plate of the present invention in a horizontal configuration;
FIG. 4 is a schematic top view of the structure of FIG. 1 in accordance with the present invention;
FIG. 5 is an enlarged view of the invention at C of FIG. 4;
FIG. 6 is an enlarged view of the invention at D of FIG. 2;
FIG. 7 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
fig. 8 is an enlarged view of fig. 1 at B.
In the figure: the device comprises a first plate 1, a first support block 101, a mounting groove 102, an inlet 103, a second plate 2, a second support block 201, a placing groove 202, a hinge seat 3, a rotating shaft 301, a binding band 4, a quick connector 401, a binding rope 5, a movable rod 6, a groove 601, a limiting block 7, a connecting piece 8, a first pull rod 9, a second pull rod 10, a turnover plate 11, a sliding block 12, an elastic restoring mechanism 13, a pressing plate 14, a guide wheel 15, a tension spring 16, a tape roll 17, a return spring piece 18, a central rotating shaft 19, a cavity 20 and a winding roller 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-8, a track and field training device comprises an L-shaped training frame, wherein two sections of the training frame are a first plate 1 and a second plate 2 respectively;
an elastic stretching mechanism is arranged on the plate I1;
the elastic stretching mechanism comprises two parallel mounting grooves 102 arranged in a plate I1 and two inlets 103 arranged on the outer surface of the plate I1, the two inlets 103 are respectively communicated with one ends of the two mounting grooves 102, a tension spring 16 is fixed in each mounting groove 102, one end of each tension spring 16 is connected with a connecting piece 8, and the tail ends of the two connecting pieces 8 extend out of the inlets 103 and are respectively connected to two ends of a movable rod 6; the elastic pull rope mechanism is used for fixing the ankle;
the second plate 2 is provided with a binding mechanism; the binding band mechanism is used for being fixed on the waist of a human body, so that when the elastic stretching mechanism and the binding mechanism are fixedly arranged on the human body, jumping is carried out on the first plate, and the effect of exercising the jumping of the human body can be achieved.
Referring to fig. 8, the binding mechanism includes two cavities 20 formed in the second plate 2 and a central rotating shaft 19 rotatably connected in the cavities 20, a winding roller 21 is sleeved outside the central rotating shaft 19, a coil 17 is sleeved outside the winding roller 21, the ends of the coil 17 in the two cavities 20 respectively extend out of the second plate 2 and are detachably connected to each other, and a spiral return spring 18 is sleeved outside the central rotating shaft 19. The binding mechanism can act as an elastic buffer by the return spring leaf in the cavity 20.
Referring to fig. 5, as a further improvement of the above scheme, two through holes are formed in the movable rod 6, an annular tightening rope 5 penetrates through the two through holes in the movable rod 6, two limiting blocks 7 are sleeved on the tightening rope 5 on the same side of the movable rod 6, elastic pins are arranged on the limiting blocks 7 so as to press the tightening rope 5 which shuttles back and forth in the limiting blocks 7, the movable rod 6 is a plastic rod, and a groove 601 is formed in the outer side of the movable rod. Through binding rope 5 and movable rod 6 can be quick bind in human ankle department to when making the jump, the movable rod and the extension spring 16 of being connected with the movable rod play the effect of hindrance, thereby play good exercise effect.
Referring to fig. 7, as a further improvement of the above scheme, the connecting member 8 is a nylon rope, the first plate 1 has an opening communicated with the mounting groove 102, a pressing plate 14 is rotatably connected to and above one side of the opening through a pin, a plurality of guide wheels 15 are rotatably mounted on the inner side of the pressing plate 14, a plurality of guide wheels 15 are also mounted on the bottom of the mounting groove 102, and a guide gap for the connecting member 8 to pass through is formed between the two guide wheels 15 which are oppositely arranged. Through the structure, the connecting piece 8 can move more stably in the mounting groove.
As a further improvement of the above scheme, one side of the second plate 2 adjacent to the first plate 1 is provided with a rectangular placing groove 202, one end of the placing groove 202 is rotatably connected with a turnover plate 11 through a pin shaft, two first sliding grooves are symmetrically formed in the turnover plate 11 relative to one side of the placing groove 202, a sliding block 12 is arranged in each first sliding groove in a sliding mode, an elastic restoring mechanism 13 connected with the sliding block 12 is further arranged in each first sliding groove, a first pull rod 9 is rotatably connected to the sliding block 12 through a pin shaft, one end, far away from the corresponding sliding block 12, of the first pull rod 9 is used for being connected with the second plate 2 in a clamping mode, and the first pull rod 9 can be rotatably accommodated in the first sliding groove. After the turnover plate 11 is opened, the first pull rod 9 and the second pull rod 10 are supported and fixed, the position of the turnover plate 11 can be effectively fixed, a human body can be conveniently seated on the turnover plate 11, the ankle of the human body can be fixed through the elastic stretching mechanism, the movable rod is repeatedly pulled, and the exercise effect can be achieved on the thigh and calf muscles of the human body.
Referring to fig. 6, as a further improvement of the above scheme, two sliding grooves two are symmetrically arranged at the bottom of the placing groove 202, a sliding block 12 is arranged in each sliding groove two in a sliding manner, an elastic return mechanism 13 connected with the sliding block 12 is also arranged in each sliding groove two, a pull rod two 10 is rotatably connected to the corresponding sliding block 12 through a pin shaft, and one end of the pull rod two 10, which is far away from the sliding block 12, is used for being clamped with the turnover plate 11. The second pull rod can be conveniently rotated to support the turnover plate, and the second pull rod 10 can be conveniently rotated to be accommodated in the second sliding groove.
As a further improvement of the above scheme, threaded holes are formed in the sliding blocks 12, positioning bolts are installed in the threaded holes, and the sliding blocks 12 in the first sliding groove and the second sliding groove are fixed in position through the positioning bolts. So as to quickly fix the positions of the sliding blocks 12 in the first sliding groove and the second sliding groove, and the structure is stable.
As a further improvement of the above scheme, the outer ends of the binding bands 4 are both provided with quick connectors 401, and the two binding bands 4 are clamped through the quick connectors 401. The quick connector adopts the prior binding band to connect the buckle structure, thereby being convenient and quick to use.
As a further improvement of the above scheme, the joint of the first plate 1 and the second plate 2 is rotatably mounted on a hinge base 3 through a rotating shaft 301, the hinge base 3 is used for being fixed with the outside, and the ends of the corresponding first plate 1 and the corresponding second plate 2 are respectively fixed with a first supporting block 101 and a second supporting block 201. The convenience is used this device upset to behind turning over this device from figure 1 position to figure 3 position, stand this moment on board two 2, conveniently hand the movable rod and stretch, can play the effect of taking exercise to the arm.
As a further improvement of the above solution, the pressure plate 14 is in a transparent plate shape, and the movable end of the pressure plate 14 and the bottom of the installation groove 102 are fixed by a bolt. Through the structure, the running condition of the parts in the mounting groove 102 can be observed conveniently, and whether damage exists or not can be found conveniently and timely.
Referring to fig. 6, as a further improvement of the above scheme, the elastic restoring mechanism 13 includes a telescopic rod and a cylindrical spring sleeved outside the telescopic rod, the telescopic rod includes a first sleeve rod and a second sleeve rod inserted into the first sleeve rod in a sliding manner, the end of the first sleeve rod is connected with the inner wall of the corresponding first sliding groove or the corresponding second sliding groove, the end of the second sleeve rod is connected with the sliding block 12, two ends of the cylindrical spring are respectively fixed with the outer walls of the first sleeve rod and the second sleeve rod,
the training device provided by the device comprises an L-shaped training frame, wherein the L-shaped training frame comprises a plate I and a plate II, an elastic stretching mechanism and a binding mechanism are respectively arranged on the plate I and the plate II, when the plate I is supported on the ground for use, the elastic stretching mechanism and the binding mechanism can be used for conveniently training the bounce of a human body, and a good training effect is achieved on leg muscles, meanwhile, the turnover plate 11 can be turned to a horizontal position, so that people can sit on the turnover plate conveniently, and legs, the movable rod and the tightening rope are fixed, so that the legs can be conveniently trained;
the L shape training frame that this device provided can also overturn ninety degrees to two level settings of board, and the extension spring that can drive the mounting groove through the hand pulling movable rod this moment in is flexible to reach the effect of taking exercise human arm, to sum up, the specific multi-functional effect of taking exercise of this scheme is applicable to track and field sportsman and tempers the use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A track and field training device comprises an L-shaped training frame, and is characterized in that two sections of the training frame are a first plate (1) and a second plate (2) respectively;
an elastic stretching mechanism is arranged on the first plate (1);
the elastic stretching mechanism comprises two parallel mounting grooves (102) arranged in a plate I (1) and two inlets (103) arranged on the outer surface of the plate I (1), the two inlets (103) are respectively communicated with one ends of the two mounting grooves (102), a tension spring (16) is fixed in each mounting groove (102), one end of each tension spring (16) is connected with a connecting piece (8), and the tail ends of the two connecting pieces (8) extend out of the inlets (103) and are respectively connected to the two ends of a movable rod (6);
a binding mechanism is arranged on the second plate (2);
bind the mechanism and connect including seting up two cavity (20), rotation in board two (2) central pivot (19) in cavity (20), winding up roller (21) have been cup jointed in the outside of central pivot (19), and the outside cover of winding up roller (21) is established and is rolled up volume (17), and the end of the volume of rolling up in two cavities (20) is stretched out board two (2) respectively, and the connection can be dismantled to the two, and the outside cover of central pivot (19) is equipped with spiral helicine resilience spring leaf (18).
2. The track and field training device of claim 1, wherein: set up two perforation on movable rod (6), and wear to be equipped with annular lacing rope (5) through two perforation on movable rod (6), be located the lacing rope (5) of movable rod (6) homonymy and go up the cover and be equipped with two stopper (7), be equipped with the elastic pin on stopper (7) so that compress tightly and shuttle through lacing rope (5) in stopper (7), just movable rod (6) are the plastics pole, and its outside still has recess (601).
3. The track and field training device of claim 1, wherein: connecting piece (8) are the nylon rope, and board (1) has the uncovered that link up with mounting groove (102), and this open one side is rotated through the round pin axle and is connected with the top and is equipped with clamp plate (14), a plurality of leading wheel (15) are installed in the inboard rotation of clamp plate (14), and a plurality of leading wheel (15) are installed equally to the tank bottom of mounting groove (102), form the guide gap that supplies connecting piece (8) to pass between two leading wheel (15) that set up relatively.
4. The track and field training device of claim 1, wherein: one side of the second plate (2) adjacent to the first plate (1) is provided with a rectangular placing groove (202), one end of the placing groove (202) is connected with a turnover plate (11) through a pin shaft in a rotating mode, two first sliding grooves are symmetrically formed in the turnover plate (11) relative to one side of the placing groove (202), a sliding block (12) is arranged in each first sliding groove in a sliding mode, an elastic restoring mechanism (13) connected with the sliding block (12) is further arranged in each first sliding groove in a sliding mode, a first pull rod (9) is connected to the sliding block (12) through a pin shaft in a rotating mode, one end, far away from the corresponding sliding block (12), of the first pull rod (9) is used for being connected with the second plate (2) in a clamping mode, and the first pull rod (9) can be rotated to be contained in the first sliding grooves.
5. The track and field training device of claim 4, wherein: the groove bottom symmetry of standing groove (202) is equipped with two spouts two, all slides in every spout two and is equipped with slider (12), is equipped with elastic recovery mechanism (13) of being connected with slider (12) in the spout two equally, rotates through the round pin axle on corresponding slider (12) and is connected with pull rod two (10), and the one end that slider (12) were kept away from in pull rod two (10) is used for with returning face plate (11) joint.
6. The track and field training device of claim 5, wherein: threaded holes are formed in the sliding blocks (12), positioning bolts are installed in the threaded holes, and the sliding blocks (12) in the first sliding groove and the second sliding groove are fixed in position through the positioning bolts.
7. A track and field training device according to any one of claims 1 to 6, wherein: quick-operation joint (401) are all installed to the outer end of bandage (4), through quick-operation joint (401) joint between two bandages (4).
8. The track and field training device of claim 7, wherein: the joint of the first plate (1) and the second plate (2) is rotatably installed on a hinge seat (3) through a rotating shaft (301), the hinge seat (3) is used for being fixed with the outside, and a first supporting block (101) and a second supporting block (201) are respectively fixed at the tail ends of the corresponding first plate (1) and the corresponding second plate (2).
9. A track and field training device according to claim 3, wherein: the pressing plate (14) is transparent plate-shaped, and the movable end of the pressing plate (14) and the bottom of the mounting groove (102) are fixed through bolts.
10. The track and field training device of claim 5, wherein: the elastic restoring mechanism (13) comprises a telescopic rod and a cylindrical spring sleeved outside the telescopic rod, the telescopic rod comprises a first sleeve rod and a second sleeve rod inserted in the first sleeve rod in a sliding mode, the tail end of the first sleeve rod is connected with the inner wall of the corresponding first sliding groove or the inner wall of the corresponding second sliding groove, the tail end of the second sleeve rod is connected with the sliding block (12), and two ends of the cylindrical spring are fixed to the outer walls of the first sleeve rod and the second sleeve rod respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110763845.6A CN113440788A (en) | 2021-07-06 | 2021-07-06 | Track and field training device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110763845.6A CN113440788A (en) | 2021-07-06 | 2021-07-06 | Track and field training device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113440788A true CN113440788A (en) | 2021-09-28 |
Family
ID=77815443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110763845.6A Withdrawn CN113440788A (en) | 2021-07-06 | 2021-07-06 | Track and field training device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113440788A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114129996A (en) * | 2021-12-21 | 2022-03-04 | 郑州大学体育学院 | Bounce training safety device |
-
2021
- 2021-07-06 CN CN202110763845.6A patent/CN113440788A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114129996A (en) * | 2021-12-21 | 2022-03-04 | 郑州大学体育学院 | Bounce training safety device |
| CN114129996B (en) * | 2021-12-21 | 2022-08-09 | 郑州大学体育学院 | Bounce training safety device |
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Application publication date: 20210928 |
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| WW01 | Invention patent application withdrawn after publication |