CN114247101B - Step moving counterweight device for table tennis training - Google Patents
Step moving counterweight device for table tennis training Download PDFInfo
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- CN114247101B CN114247101B CN202210065938.6A CN202210065938A CN114247101B CN 114247101 B CN114247101 B CN 114247101B CN 202210065938 A CN202210065938 A CN 202210065938A CN 114247101 B CN114247101 B CN 114247101B
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- piece
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- front fixing
- fixing part
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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
- 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
- A63B21/065—User-manipulated weights worn on user's body
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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
- A63B67/00—Sporting games or accessories therefor, not provided for in groups A63B1/00 - A63B65/00
- A63B67/04—Table games physically beneficial for the human body, modelled on outdoor sports, e.g. table tennis
Abstract
The invention provides a step moving counterweight device for table tennis training, which relates to the technical field of training counterweight devices and comprises: a front fixing portion; preceding fixed part is including slot and gear, during the use, with preceding mounting and back mounting cover connect sportsman's shank both sides, in the slot of mounting before four groups of racks with on the back mounting are pegged graft, and make rack and gear looks block, through rotating the gear, can make the rack move to the rear side in the slot, and drive the back mounting and tighten up, through set up the draw-in groove on the rack, can be after the rack is pegged graft in the slot, make draw-in groove and wedge structure looks block on the inserted block, the accessible fixes the rack and makes preceding mounting and back mounting fixed mutually like this, it fixes to have solved traditional paces and move counter weight device and usually adopt the magic subsides to fix, and the magic subsides elasticity can greatly reduced after using for a long time, this just makes the counter weight device can's unable fixed sportsman's shank, lead to whole counter weight device to scrap and can's continuation use problem.
Description
Technical Field
The invention relates to the technical field of training counterweight devices, in particular to a step moving counterweight device for table tennis training.
Background
In table tennis training process, the step training of shank is especially important, and during the step training, through at sportsman's shank installation counter weight device, the resistance that multiplicable step removed can temper the endurance and the agility of sportsman's shank, helps improving user's motion performance.
However, as for the conventional step moving counterweight device, the hook and loop fastener is usually adopted for fixing, and the tightness of the hook and loop fastener can be greatly reduced after the hook and loop fastener is used for a long time, so that the counterweight device cannot be fixed to the legs of an athlete, the whole counterweight device is scrapped and cannot be used continuously, the weight of the conventional step moving counterweight device is usually fixed, the weight cannot be changed at any time according to the desire of using the counterweight device, and the counterweight device is not flexible to use and cannot meet the use requirements of the athlete.
Disclosure of Invention
In view of this, the present invention provides a step moving weight device for table tennis training, which has a single set of weight bearing components, can flexibly mount and dismount a weight block, and has a higher practicability.
The invention provides a step moving counterweight device for table tennis training, which specifically comprises: a front fixing portion; the front fixing part comprises four groups of slots and gears, the slots are formed in the two side positions of the upper end and the lower end of the front fixing part in the front fixing part and penetrate through the front side and the rear side of the front fixing part, and the gears are rotatably arranged in the slots; the rear end of the front fixing part is connected with a rear fixing part, a rear fixing part of the rear fixing part is arranged at the rear side of the front fixing part, a rack of the rear fixing part is inserted into the slot, and the rack is clamped with the gear; the front fixing part is provided with a load assembly, a supporting piece and a moving piece of the load assembly are slidably mounted on a mounting rod in the middle of the front fixing piece, the load assembly is arranged on the rear fixing part, and the supporting piece and the moving piece are slidably mounted on the mounting rod in the middle of the rear fixing piece; the front fixing part is provided with an internal assembly, the mounting parts of the internal assembly are arranged at two ends of the inner side of the front fixing part, the internal assembly is arranged on the rear fixing part, and the mounting parts are arranged at two ends of the inner side of the rear fixing part.
Optionally, the front fixing part further includes: the upper end and the lower end of the front fixing piece are of semicircular structures, three groups of circular mounting rods are arranged in the middle of the front fixing piece, and elastic pieces are arranged at the upper end and the lower end of each mounting rod; the fastener A is arranged at the inner ends of the upper side and the lower side of the front fixing piece, and the fastener A is provided with heat dissipation holes.
Optionally, the front fixing part further comprises: the side grooves are formed at the upper ends and the lower ends of the two sides of the front fixing piece, two groups of guide rods sleeved with the elastic pieces are arranged in the side grooves, and the inner ends of the side grooves are communicated with the inserting grooves; the insert block is slidably mounted on the guide rod in the side groove, a wedge-shaped structure is arranged on the inner side of the insert block, and the inner end of the insert block is located in the slot.
Optionally, the rear fixing part includes: the upper end and the lower end of the rear fixing piece are of semicircular structures, three groups of circular mounting rods are arranged in the middle of the rear fixing piece, and elastic pieces are arranged at the upper end and the lower end of each mounting rod; and the fastener B is arranged at the inner ends of the upper side and the lower side of the rear fixing piece, and the fastener B is provided with heat dissipation holes.
Optionally, the rear fixing part further includes: the racks are provided with four groups, and the racks are arranged at the upper end and the lower end of the left side and the right side of the rear fixing piece; the clamping grooves are arranged on the inner side of the rack in an equal row and penetrate through the two sides of the rack.
Optionally, the weight assembly comprises: the rear end of the supporting piece is provided with an ear plate, and the bottom of the inner side of the supporting piece is provided with a rectangular through hole; the spout, the spout is seted up in the inboard upper end of support piece, and the spout runs through support piece inboard and both ends.
Optionally, the weight assembly further comprises: the moving piece is arranged at the upper end of the supporting piece, the bottom of the moving piece is inserted into the sliding groove, the rear end of the moving piece is provided with an ear plate, and the upper end of the moving piece is provided with a rectangular through hole; and the limiting block is arranged in the middle of the front side of the moving part.
Optionally, the weight assembly further comprises: the counterweight block is arranged at the front sides of the supporting piece and the moving piece, and the upper end of the counterweight block is symmetrically provided with annular convex structures which are respectively inserted in the rectangular through holes of the supporting piece and the moving piece; the limiting groove is formed in the middle of the balancing weight and penetrates through two sides of the balancing weight, and a limiting block is inserted in the limiting groove.
Optionally, the internal components comprise: the mounting piece is provided with screw holes at two sides and a rectangular groove in the middle; and the contact piece is arranged in the rectangular groove in the middle of the mounting piece.
Advantageous effects
According to the step movement counterweight device provided by the embodiments of the invention, compared with the traditional counterweight, the rack and the gear are arranged at the two ends of the device, so that the device can be conveniently fixed on legs of athletes, the service life is long, the problem that the tightness is reduced due to long-time use of the magic tape is solved, the counterweight block which is convenient to disassemble is arranged, the counterweight block can be added and disassembled according to the use requirements of the athletes, and the practicability of the device is improved.
The invention is provided with a front fixing part and a rear fixing part, L-shaped slots are arranged on two sides of the front fixing part, a group of gears are rotatably arranged in the slots, rectangular side slots are arranged on two sides of the front fixing part, the inner ends of the side slots are communicated with the slots, a group of T-shaped insertion blocks are movably arranged in the side slots, racks are arranged on the rear fixing part, slots are arranged on the racks in an equal row, when in use, the front fixing part and the rear fixing part are sleeved on two sides of a shank of a sportsman, four groups of racks on the rear fixing part are inserted into the slots of the front fixing part and are clamped with the gears, the racks can move to the rear side in the slots by rotating the gears and drive the rear fixing part to be tightened, and the slots are arranged on the racks, so that the front fixing part and the rear fixing part can be fixed by fixing the racks.
According to the invention, the load bearing assembly is arranged, the circular mounting rod is arranged on the rear fixing piece of the front fixing piece, the lug plates at the rear ends of the supporting piece and the moving piece are slidably mounted on the mounting rod, the outer sides of the supporting piece and the moving piece are in contact with the elastic piece on the mounting rod, the upper end of the supporting piece is provided with the sliding groove, the bottom of the moving piece is inserted into the sliding groove, the long-strip-shaped balancing weight is arranged, the middle position of the balancing weight is provided with the circular limiting groove, when the balancing weight needs to be added, the supporting piece and the moving piece are respectively pulled towards two sides, the balancing weight is placed at the front ends of the supporting piece and the moving piece, the circular limiting block at the front end of the moving piece is inserted into the limiting groove of the balancing weight, the supporting piece and the moving piece are loosened, the elastic piece pushes the supporting piece and the moving piece to move towards the inner side, and the annular bulges at two ends of the balancing weight are respectively inserted into the rectangular through holes of the supporting piece and the moving piece, so that the balancing weight is quickly fixed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
The drawings in the following description relate to only some embodiments of the invention and are not intended to limit the invention.
In the drawings:
FIG. 1 shows a schematic perspective view of an embodiment according to the invention;
FIG. 2 shows an exploded structural schematic according to an embodiment of the invention;
FIG. 3 shows a partial connection schematic according to an embodiment of the invention;
FIG. 4 is an enlarged schematic view of section A from FIG. 3 according to an embodiment of the present invention;
FIG. 5 illustrates a perspective view of a front fixing part according to an embodiment of the present invention;
FIG. 6 shows a partial perspective view of an embodiment in accordance with the invention;
FIG. 7 shows a perspective view of a load assembly according to an embodiment of the present invention;
FIG. 8 shows an exploded view of the load assembly according to an embodiment of the present invention;
fig. 9 shows an exploded view of the internal components according to an embodiment of the invention.
List of reference numbers:
1. a front fixing portion; 101. a front fixing member; 1011. a fastener A; 102. inserting slots; 1021. a gear; 103. a side groove; 1031. inserting a block; 2. a rear fixing part; 201. a rear fixing member; 2011. a fastener B; 202. a rack; 2021. a card slot; 3. a weight assembly; 301. a support member; 3011. a chute; 302. a moving member; 3021. a limiting block; 303. a counterweight block; 3031. a limiting groove; 4. an internal component; 401. a mounting member; 402. a contact member.
Detailed Description
In order to make the objects, aspects and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference numerals in the drawings denote like elements.
The embodiment is as follows: please refer to fig. 1 to fig. 9:
the invention provides a step moving counterweight device for table tennis training, which comprises: a front fixing section 1; the front fixing part 1 comprises slots 102 and gears 1021, four groups of the slots 102 are arranged, the slots 102 are arranged at two side positions of the upper end and the lower end of the front fixing piece 101 in the front fixing part 1, the slots 102 penetrate through the front side and the rear side of the front fixing piece 101, and the gears 1021 are rotatably arranged in the slots 102; the rear end of the front fixing part 1 is connected with a rear fixing part 2, a rear fixing part 201 of the rear fixing part 2 is arranged at the rear side of the front fixing part 101, a rack 202 of the rear fixing part 2 is inserted in the slot 102, and the rack 202 is clamped with the gear 1021; the front fixing part 1 is provided with a load component 3, a supporting part 301 and a moving part 302 of the load component 3 are slidably mounted on a mounting rod in the middle of the front fixing part 101, the load component 3 is arranged on the rear fixing part 2, and the supporting part 301 and the moving part 302 are slidably mounted on the mounting rod in the middle of the rear fixing part 201; the front fixing part 1 is provided with the internal components 4, the mounting parts 401 of the internal components 4 are arranged at the two ends of the inner side of the front fixing part 101, the internal components 4 are arranged on the rear fixing part 2, and the mounting parts 401 are arranged at the two ends of the inner side of the rear fixing part 201.
Further, according to an embodiment of the present invention, as shown in fig. 5, the front fixing part 1 further includes: the upper end and the lower end of the front fixing piece 101 are of a semicircular structure, three groups of circular mounting rods are arranged in the middle of the front fixing piece 101, and elastic pieces are arranged at the upper end and the lower end of each mounting rod; the fastener A1011 is arranged at the inner ends of the upper side and the lower side of the front fixing part 101, and heat dissipation holes are formed in the fastener A1011; the front fixing piece 101 is arranged, the front fixing piece 101 is provided with a mounting rod, the load bearing assembly 3 can be mounted on the mounting rod to bear load, the fastener A1011 made of elastic material is arranged, when the device is tightened, the fastener A1011 can be contacted with the skin of a user, the skin of the user can be protected and acted, and the hurting can be prevented, the side groove 103 is arranged at the upper end and the lower end of the two sides of the front fixing piece 101, two groups of guide rods sleeved with elastic pieces are arranged in the side groove 103, and the inner end of the side groove 103 is communicated with the slot 102; the insertion block 1031 is slidably mounted on the guide rod in the side groove 103, a wedge-shaped structure is arranged on the inner side of the insertion block 1031, the inner end of the insertion block 1031 is located in the insertion groove 102, the rectangular side groove 103 is arranged, the T-shaped insertion block 1031 is movably mounted in the side groove 103, and the rack 202 can be fixed in the insertion groove 102 by clamping the wedge-shaped structure at the tail end of the insertion block 1031 with the clamping groove 2021 in the rack 202.
Further, according to an embodiment of the present invention, as shown in fig. 6, the rear fixing portion 2 includes: the upper end and the lower end of the rear fixing piece 201 are of a semicircular structure, three groups of circular mounting rods are arranged in the middle of the rear fixing piece 201, and elastic pieces are arranged at the upper end and the lower end of each mounting rod; the fastener B2011 is arranged at the inner ends of the upper side and the lower side of the rear fixing piece 201, and the fastener B2011 is provided with heat dissipation holes; the rear fixing piece 201 is arranged, the mounting rod is arranged on the rear fixing piece 201, the load bearing assembly 3 can be mounted on the mounting rod for bearing load, the fastening piece B2011 made of elastic materials is arranged, when the device is tightened, the fastening piece B2011 can be contacted with the skin of a user, the skin of the user can be protected and acted, the hurting can be prevented, four groups of racks 202 are arranged, and the racks 202 are arranged at the upper end and the lower end of the left side and the right side of the rear fixing piece 201; the clamping groove 2021, the clamping groove 2021 and the like are arranged on the inner side of the rack 202, the clamping groove 2021 penetrates through two sides of the rack 202, the rack 202 is arranged, the rack 202 is clamped with the gear 1021 after the rack 202 is inserted into the slot 102, the rack 202 can drive the rear fixing piece 201 to move and tighten by rotating the gear 1021, the wedge-shaped clamping groove 2021 is arranged, and the rack 202 can be fixed in the slot 102 by clamping the wedge-shaped clamping groove 2021 at the tail end of the insertion block 1031.
Further, according to an embodiment of the present invention, as shown in fig. 7 to 8, the weight member 3 includes: the supporting piece 301, the ear plate is arranged at the rear end of the supporting piece 301, and the bottom of the inner side of the supporting piece 301 is provided with a rectangular through hole; the sliding groove 3011 is formed in the upper end of the inner side of the supporting piece 301, and the sliding groove 3011 penetrates through the inner side and two ends of the supporting piece 301; the L-shaped supporting piece 301 is arranged, the supporting piece 301 and the moving piece 302 can be matched for use so as to fixedly install the balancing weight 303, the T-shaped sliding groove 3011 is arranged, the moving piece 302 is inserted into the sliding groove 3011, the moving piece 302 can slide on the supporting piece 301, the moving piece 302 is arranged at the upper end of the supporting piece 301, the bottom of the moving piece 302 is inserted into the sliding groove 3011, the rear end of the moving piece 302 is provided with an ear plate, and the upper end of the moving piece 302 is provided with a rectangular through hole; a limiting block 3021, wherein the limiting block 3021 is arranged in the middle of the front side of the moving member 302; the L-shaped moving part 302 is arranged, the moving part 302 and the supporting part 301 can be used in a matched mode to fixedly install the balancing weight 303, the cylindrical limiting block 3021 is arranged, the limiting block 3021 is inserted into the limiting groove 3031, the balancing weight 303 can be fixed on the moving part 302, the balancing weight 303 is arranged on the front sides of the supporting part 301 and the moving part 302, the upper end of the balancing weight 303 is symmetrically provided with annular protruding structures, and the protruding structures are inserted into the rectangular through holes of the supporting part 301 and the moving part 302 respectively; spacing groove 3031, spacing groove 3031 set up in the intermediate position of balancing weight 303, and spacing groove 3031 runs through the both sides of balancing weight 303 to it has stopper 3021 to peg graft in spacing groove 3031, sets up the balancing weight 303 of metal material, can play the effect of increase weight to this device, sets up circular spacing groove 3031, and will insert stopper 3021 to the spacing groove 3031 in, can make balancing weight 303 fix on moving member 302.
Further, according to an embodiment of the present invention, as shown in fig. 9, the inner assembly 4 includes: the mounting piece 401, both sides of the mounting piece 401 are provided with screw holes, and the middle of the mounting piece 401 is provided with a rectangular groove; contact piece 402, contact piece 402 are established in the rectangular channel in the middle of installed part 401, set up installed part 401, can be through installed part 401 with contact piece 402 fixed in this device, set up rubber material's contact piece 402, can play anti-skidding effect when this device is fixed to sportsman's shank.
The specific use mode and function of the embodiment are as follows:
in the present invention, as shown in fig. 1-9, four slots 102 are opened on the front fixing member 101, a gear 1021 is rotatably installed inside the slots 102, side grooves 103 are opened on both sides of the exterior of the front fixing member 101, a T-shaped insert block 1031 is movably installed in the side grooves 103, four sets of racks 202 with slots 2021 are provided on the rear fixing member 201, the front fixing member 101 and the rear fixing member 201 are sleeved on both sides of the lower leg of a player, the racks 202 on the rear fixing member 201 are inserted into the slots 102 of the front fixing member 101 and are engaged with the gear 1021, the gear 1021 is rotated to move the racks 202 to the rear side in the slots 102 and drive the rear fixing member 201 to tighten, a wedge structure on the insert block 1031 is engaged with the slots 2021 to fix the front fixing member 101 and the rear fixing member 201 on the lower leg of the player, a circular mounting rod is provided in the rear fixing member 201 of the front fixing member 101, the mounting member 301 and the rectangular moving member 302 are slidably mounted on the mounting rod, a chute 3011 is opened on the supporting member 301, the movable member 302 is inserted into the annular slot 3011, the limiting member 303 and the movable member 302, the movable member 301 and the limiting member 301 is released, and the movable member 301 and the limiting member 301.
Finally, it should be noted that, when describing the positions of the components and the matching relationship therebetween, the present invention is usually illustrated by one/a pair of components, however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other/other pairs of components.
The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.
Claims (6)
1. A step removes counter weight device for table tennis training, its characterized in that includes: a front fixing section (1); the front fixing part (1) comprises a front fixing piece (101), a slot (102) and a gear (1021), the upper end and the lower end of the front fixing piece (101) are of a semicircular structure, three groups of circular mounting rods are arranged in the middle of the front fixing piece (101), and elastic pieces are arranged at the upper end and the lower end of each mounting rod; the four groups of the slots (102) are formed, the slots (102) are formed in the positions of two sides of the upper end and the lower end of the front fixing piece (101), the slots (102) penetrate through the front side and the rear side of the front fixing piece (101), and the gear (1021) is rotatably installed in the slots (102); the rear fixing part (2) is connected to the rear end of the front fixing part (1), the rear fixing part (2) comprises a rear fixing piece (201), the upper end and the lower end of the rear fixing piece (201) are of a semicircular structure, three groups of circular mounting rods are arranged in the middle of the rear fixing piece (201), elastic pieces are arranged at the upper end and the lower end of each mounting rod, and the rear fixing piece (201) is arranged on the rear side of the front fixing piece (101); the rack (202) of the rear fixing part (2) is inserted into the slot (102), and the rack (202) is clamped with the gear (1021); the front fixing part (1) is provided with a load assembly (3), the load assembly (3) is arranged on the rear fixing part (2), the load assembly (3) comprises a supporting part (301), a sliding groove (3011), a moving part (302), a limiting block (3021), a balancing weight (303) and a limiting groove (3031), the rear end of the supporting part (301) is provided with an ear plate, and the bottom of the inner side of the supporting part (301) is provided with a rectangular through hole; the sliding groove (3011) is arranged at the upper end of the inner side of the supporting piece (301), and the sliding groove (3011) penetrates through the inner side and two ends of the supporting piece (301); the moving piece (302) is arranged at the upper end of the supporting piece (301), the bottom of the moving piece (302) is inserted into the sliding groove (3011), the rear end of the moving piece (302) is provided with an ear plate, and the upper end of the moving piece (302) is provided with a rectangular through hole; the limiting block (3021) is arranged in the middle of the front side of the moving piece (302); the supporting piece (301) and the moving piece (302) are slidably mounted on a mounting rod in the middle of the front fixing piece (101), and the supporting piece (301) and the moving piece (302) are slidably mounted on a mounting rod in the middle of the rear fixing piece (201); the counterweight block (303) is arranged at the front side of the supporting piece (301) and the moving piece (302), the upper end of the counterweight block (303) is symmetrically provided with annular convex structures, and the convex structures are respectively inserted into the rectangular through holes of the supporting piece (301) and the moving piece (302); the limiting groove (3031) is formed in the middle of the balancing weight (303), the limiting groove (3031) penetrates through two sides of the balancing weight (303), and a limiting block (3021) is inserted in the limiting groove (3031); be equipped with interior subassembly (4) on preceding fixed part (1), and install parts (401) of interior subassembly (4) establish in the inboard both ends of preceding mounting (101), and interior subassembly (4) are established on back fixed part (2), and install parts (401) establish in the inboard both ends of back mounting (201).
2. A step movement weight arrangement for table tennis training as defined in claim 1 wherein: the front fixing part (1) further comprises: fastener A (1011), fastener A (1011) are established at the inner of preceding mounting (101) upper and lower both sides, and are equipped with the louvre on fastener A (1011).
3. A step movement weight arrangement for table tennis training as defined in claim 1 wherein: the front fixing part (1) further comprises: the side grooves (103) are formed in the upper end and the lower end of the two sides of the front fixing piece (101), two groups of guide rods sleeved with elastic pieces are arranged in the side grooves (103), and the inner ends of the side grooves (103) are communicated with the slot (102); and the inserting block (1031) is slidably mounted on the guide rod in the side groove (103), a wedge-shaped structure is arranged on the inner side of the inserting block (1031), and the inner end of the inserting block (1031) is positioned in the slot (102).
4. A step movement weight arrangement for table tennis training as defined in claim 1, wherein: the rear fixing part (2) further comprises: fastener B (2011), fastener B (2011) establish the inner in the upper and lower both sides of back mounting (201), and are equipped with the louvre on fastener B (2011).
5. A step movement weight arrangement for table tennis training as defined in claim 1 wherein: the rear fixing part (2) further comprises: the rack (202), the rack (202) is totally set up four groups, and the rack (202) is set up in the upper and lower ends of the left and right sides of the rear fixed part (201); the clamping grooves (2021), the clamping grooves (2021) and the like are arranged on the inner side of the rack (202), and the clamping grooves (2021) penetrate through two sides of the rack (202).
6. A step movement weight arrangement for table tennis training as defined in claim 1 wherein: the inner assembly (4) comprises: the mounting piece (401), both sides of the mounting piece (401) are provided with screw holes, and the middle of the mounting piece (401) is provided with a rectangular groove; and the contact piece (402), wherein the contact piece (402) is arranged in a rectangular groove in the middle of the mounting piece (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210065938.6A CN114247101B (en) | 2022-01-20 | 2022-01-20 | Step moving counterweight device for table tennis training |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210065938.6A CN114247101B (en) | 2022-01-20 | 2022-01-20 | Step moving counterweight device for table tennis training |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114247101A CN114247101A (en) | 2022-03-29 |
| CN114247101B true CN114247101B (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210065938.6A Active CN114247101B (en) | 2022-01-20 | 2022-01-20 | Step moving counterweight device for table tennis training |
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