CN103816653A

CN103816653A - Springback plate and springback net device used for training improving of ball games and home fitness

Info

Publication number: CN103816653A
Application number: CN201210467920.5A
Authority: CN
Inventors: 杨学华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-19
Filing date: 2012-11-19
Publication date: 2014-05-28
Also published as: CN103958009A; WO2014075377A1

Abstract

Disclosed is a springback plate and springback net device used for personal training improving of indoor or outdoor ball games. Needs of ball-hitting persons different in height and positioning distance can be met by adjusting ascending and descending height of main supports on two sides, and different needs of the ball-hitting persons can be met by overturning to adjust angle of a springback plate or a springback net relative to a ball-coming direction; a ball meeting face of the springback plate or the springback net can be designed to be a plane, a regular curved surface or an irregular curved surface, the irregular curved surface can be designed to be in the shape of parallelly-undulant wave strips, sawteeth or distributed chess pieces to adapt to training requirements of different levels. A springback plate series can be used for personal training and fitness of ball games like table tennis, tennis, volleyball and football, and a springback net series can be used for personal training and fitness of ball games like table tennis, badminton, shuttlecock and baseball.

Description

Rebound board and resilience net arrangement for balls sport training raising with family fitness

Technical field

The training that the present invention relates to table tennis, shuttlecock, tennis, football, vollyball, baseball and squash etc. improves with rebound board and resilience net arrangement, can be used for the indoor and outdoor amusement of average family, body-building simultaneously.

Background technology

At present in sports as ball table tennis, shuttlecock, tennis is due to the limitation in place, beginner cannot improve and master a skill fast, be difficult to set up as early as possible the interest and confidence for this motion, the product design on the circle of training is at present mainly service, picks up ball convenient type, also cannot train from Motion Technology itself indoor; Average family member also cannot do body building easily, is difficult to find suitable motion partner, and networked information era geek residence/female etc. are more and more, and the equipment that is suitable for indoor body-building is ready to appear; At present common personal body-building apparatus is mostly strength type, as treadmill etc. is too expensive and heavy, do not have on the market yet light, sports equipment can be used for indoor individual and uses flexibly, cannot meet people's daily need; Agile just can be more healthy, also can be more self-confident.

Summary of the invention

The present invention is in view of above present situation, object is to provide the one can be for indoor (also can move to outdoor) single ball (as table tennis, shuttlecock, tennis, baseball, football, vollyball etc.) training rebound board and resilience net, both can improve playing skill, and can mediate again study and work pressure and play sport and body-building object, and can also reduce minor and indulge in game and network.

The inventor, by training rebound board or the net of design difformity and structural change, can achieve the above object, thereby complete the present invention.

A kind of adjustable device of meeting sphere height and angle is provided, this plate or net adjustable lifting height meet batting people height and the far and near different needs of erect-position as shown in Figure 1, Figure 3 and Figure 4, in figure, inner bracing piece 50 is inserted in outer support bar 60 inside, each two fast pulleys or the universal wheel 80 fixed of outer support bar base, a safe bow 83 of the each connection in both sides inside and outside base, two bars 50/60 have the circular hole that fastens sizing in the horizontal direction, and barrel band 65 inserts in 50/60 of good hole by requirement for height, and the minimum altitude of 50/60 combination is 800～1200mm, and middle hole 61 is designed 8～16, must guarantee between hole equidistantly, simultaneously this rebound board/web plate can by turning-over support plate 20 and auxiliary support bar 70 regulate relative come the angle of direction of bowl to meet firmly size of batting people, far and near different demands, the inner bracing piece 50 upper ends journal bearing 40 that is connected and fixed, a stainless steel cylinder 41 is fixed with nut in gripper shoe 20 centers, this cylinder 41 directly connects insertion journal bearing 40, gripper shoe 20 is installed with 8～16 circular holes 21, rebound board or net brace summer 30 insert in the circular hole 21 of gripper shoe 20, circular hole guarantees equidistant, middle two distance between borehole are twices of adjacent holes distance, in use, adjust jack position and can change rebound board or net height, insert respectively in support bar 50/60 combination of upper end gripper shoe 20 and lower end at auxiliary fixed bar 70 two, not only can fix rebound board angle but also can supplemental support, the circular hole that nylon rope 72 is hitched to main support rod 50/60 and gripper shoe 20 is to fix rebound board/net.

As Fig. 5 (a), Fig. 3 and Fig. 4, the surface of this plate/net be designed to plane, ruled surface (as circular arc, parabola shaped, hyperbola, exponential function shape, ellipsoid intercept within surface or hyperboloid intercept within surface) or irregular curved surface; As Fig. 5 a, Fig. 6 and Figure 13, irregular curved design becomes corrugated, chess piece to scatter shape or zigzag, forms so changeable bounce-back course of action, with well-drilled respond, and improves rapidly playing skill.

Rebound board or net design forming one side or front-back two-sided: one side is plane, reverse side adopts curved design as Fig. 5 a, Figure 11; Or one side is that curved surface reverse side is another curved surface; Or positive and negative is same plane or curved surface, allow like this user can have different selections and adjustment.

As Fig. 5 b, 12 is an arch lock tube, is fixed on 10/11 main structure panel by bolt 13 and nut 14, and bolt 13 is large capitiform, and in use, circular support beam 30 passes arch lock tube 12, then through the circular hole of gripper shoe 20, rebound board is hung between two side stands.

As Fig. 6, in the corrugated curved surface of parallel fluctuating, the planar section length of each relief elements is 0～80mm, convex portion length L 20～60mm, height of projection H gets 3～12mm, in Fig. 6 (C), L/H value gets 6～20, size determines according to balls, the desirable sine and cosine shaped form of curve form or elliptic arc; Corrugated rises and falls and can be uniformly distributed, and also can adjust arbitrarily customization density and distribute, to meet different needs; Ripple bar or corrugated plating material are high molecule plastic, high elastic modulus alloy, this place recommendation polycarbonate, ABS or nylon; Ripple bar or corrugated plating are fixed on rebound board by adhesive, double faced adhesive tape, strong clamp or screw.

As Fig. 1 and Fig. 2, chess piece scatters in the irregular curved design of shape, main rebound board 10 is plane or ruled surface, and dome dish 13 (like chess piece) length D (diameter) gets 16～80mm, and dome dish 13 height H 1 are got 2～10mm, the ratio of D/H1 should be 8～20, dome dish size determines according to balls, and the surface that dome dish is met ball is made into ruled surface, preferentially selects ellipsoid, as Fig. 2, pasting main rebound board one side is plane; The density of dome dish in plane rebound board 10 distributes and can freely put or customize; Dome dish can be made into carrying magnetic, processing of high molecular material by obdurability is made, inner appropriate flat thin magnet or the magnetic iron powder of filling, is designed to stainless steel plane rebound board simultaneously or has the macromolecular material composite of inhaling magnetic, and assurance is inhaled firmly in plane rebound board like this; Can in plane or ruled surface rebound board, put in advance the small sircle hole of arranging by any density, perforation in the middle of dome dish simultaneously, makes normal screws can pass protruding and rebound board, is locked by respective nut, is fixed on like this in rebound board; Also can stick with glue agent or double faced adhesive tape the dome dish of macromolecule material is pasted on to rebound board surface.

As Fig. 7, the present invention also provides a kind of resilience net arrangement, can overcome the shortcoming that rebound board noise is large, bounce-back is weak, thereby expand applicable surface, meets the individual training needs such as shuttlecock, tennis, baseball, key ball, football and vollyball.

As Fig. 7, Fig. 8, Fig. 9 and Figure 10, resilience net 14 main bodys are by housing 19, cross-brace beam 17, and vertical supporting bar 15, the sleeve 16 of cross-brace beam 17 correspondences and nylon or elastic alloy material net string 18 form.

As Fig. 8 and Fig. 7, net string is with like tennis racket, and the mode of racket penetrates housing 19, and in the place that meets inner support bar or beam, directly around Shang Yiquan or more than a circle, then vertical pulling is in the string hole of housing; When deisgn product, must guarantee that surface string hole and inner support bar or beam is definitely smooth, to guarantee the durability of string; At vertical supporting bar 15, in upper and lower and housing 19 interconnections place, vertical supporting bar 15 stretches out outside by circular hole, is fixed into overall structure by nut.

As Fig. 7, Fig. 9 and Figure 10, cross-brace beam 17 and housing 19 infalls, cross-brace beam 17 stretches out housing 19, insert sleeve 16 inside, sleeve 16 skins 161 are made up of high strength alloy steel, internal layer 162 is made up of high strength macromolecular material or other materials, as Figure 10, at vertical direction, sleeve 16 is cut to a groove, recess width w is almost identical with the width of longitudinal housing 19, housing 19 can be packed in sleeve 16 grooves, in use, the sleeve 16 that connects resilience host body is inserted in the corresponding circle hole of gripper shoe 20 fixing.

As Figure 11 and Figure 12, the present invention also provides a kind of design of curved surface shaped resilience net, the longitudinal side that is housing 19 with the main difference of rectangle structure is in modal change, adopt mould pressing process, rectangular planes is pressed into elliptic arc line segment tee section, and always curved 5 °～15 ° angles of direction of bowl, have improved the control of training of human to ball like this, improve continue batting ability, and then greatly training for promotion and take exercise efficiency; Home Network has the tow sides of different shape simultaneously, can increase its various selection.

As Figure 13, the present invention also provides the wavy curved surface shaped resilience of a kind of sawtooth net, and angle of deviation β (angle of serration face and resilience host body plane) gets 4 °～15 °, and so horizontal housing and cross-brace beam are all made into zigzag; The curved surface of this kind of concavo-convex variation has increased course of action variation, and whole body agility that can exacting practice batter, makes trainer reach fast middle-and-high-ranking level.

Accompanying drawing explanation

Fig. 1 is rebound board and rack body front view, the rebound board overall structure of seeing from striker's angle

Fig. 2 is the geometry schematic diagram that chess piece scatters shape rebound board convexity disk

Fig. 3 is rebound board side schematic three dimensional views

Fig. 4 is rack body left view

Fig. 5 is curved slab and brace summer lock tube fixed structure schematic diagram

The irregular curved-surface structure schematic diagram of Fig. 6 ripple strip and geometry schematic diagram

Fig. 7 resilience net and rack body front view

Longitudinal rod and housing infall partial schematic diagram in Fig. 8 resilience net

The right hand sleeves left view of Fig. 9 resilience net brace summer

The right hand sleeves top view of Figure 10 resilience net brace summer

Figure 11 curved surface shaped resilience net left view

Figure 12 curved surface shaped resilience net top view

The wavy curved surface resilience of Figure 13 rack saw net top view

In Figure 14, platform is practised schematic diagram without desktop

Figure 15 close-table connection desktop exercise schematic diagram

Platform connection desktop top spin exercise schematic diagram in Figure 16

Figure 17 close-table connection desktop chop exercise schematic diagram

Figure 18 far from the table is without the desktop exercise schematic diagram of driving energetically

Description of symbols in figure:

The additional long glue of 10 rebound board 11

12 brace summer lock tube 13 dome dishes

141 lock tube hold-down screw 142 lock tube hold-doun nuts

9 resilience net 15 vertical supporting bars

151 vertical supporting bar nut 16 cross-brace beam casing cylinders

17 cross-brace beam 18 net strings

19 resilience net housing 20 gripper shoes

21 gripper shoe circular hole 30 brace summers

40 journal bearing 41 cylinders

50 inner bracing piece 60 outer support bars

The main base for supporting support bar of 61 support bar circular hole 62 latch

The auxiliary fixed bar of 65 support bar latch 70

72 is auxiliary with determining rope 80 fast pulleys

82 fast pulleys/universal wheel fixed-use bolt nut, 83 safe bows

The specific embodiment

The present invention can have numerous balls sport trainings or workout scheme, enumerates a small amount of scheme and embodiment here, is described in detail.

Scheme 1

This programme is made every effort to the beginner of table tennis, tennis, squash etc. can the high feel of the ball of Quick and respond, or middle-aged and old body-building is to reach the object keeping fit with flexibility, as Fig. 1, Fig. 6, Figure 14 and Figure 15, with plane or ruled surface type rebound board or net, rebound board/net width 800～1600mm, height 600～1400mm, receive in curved surface distance (being that upper and lower side is to plate median plane horizontal line distance) with plate hight than 1/24～1/48.

If should select the slightly large plate in interior receipts angle with curve rebound board/net, interior receipts angle α is the angle of upper and lower side tangent line and vertical direction, can select 10 °～20 °; Curved surface can select certain intercepting curved section of planar shaped, ellipse arc or exponential function shape as resilience face.

The material of rebound board can select ordinary rigid material as lower materials of coefficient of friction such as not saturating steel, aluminium alloy, rigid plastics or wood materials.

For table tennis beginner or more amateurish middle-aged and old fitness person, can select to join close-table batting (Figure 15) in desktop, 5～15 °, the downward upset of rebound board about θ angle, the distance of batting people and plate/net is 1.0m～2.0m, the flat board of an approximate table tennis table is put in centre, dull and stereotyped size, highly, elasticity likes any selection according to batting people, dull and stereotyped length (person of modern times's end with rebound board/net median plane apart from) 800～1200mm, width 800～1200mm. are recommended in this case.

The beginners such as table tennis squash also shouldn't tables, and directly just to the batting of rebound board/net, as Figure 14, by rebound board/net, to facing upward θ angle, approximately 5～10 °, batting people is from the 1500mm～2500mm of rebound board/net distance, impact continuously by larger power; In when with curved surface rebound board/net, receiving angle should design slightly littlely, approximately 4～10 °.

For tennis/squash beginner, can directly practise on the ground, the desktop of saying is above worked as in ground, batting people and rebound board distance is slightly far away, rebound board height downward 0～0.4m, and the entirety θ angle that slightly dips down: 5～20 °, i.e. 5～20 ° of 10,20 integrated overturns in figure, it is main selecting tip-tap.

In the good situation of the feel of the ball, checkerboard type in Fig. 1, Fig. 6 and Figure 13, corrugated or zigzag irregular surface be can introduce, playing skill and swift degree can further improve.

Scheme 2

This programme is intended to, from improving table tennis training person playing skill, strength and technical skill angle design and enforcement, implement by this programme, makes trainer possess fast high-caliber playing skill.

As Figure 16, distance connection desktop batting in employing, batting people is apart from the about 1.2m～1.8m of rebound board/net; Rebound board/net width 1.2～1.5m, height 0.4m～0.8m; Half billiard table that the approximate ping-pong contest of the large low height of connection table is used, width 1.2～1.5m, length 1.0m～1.4m, desktop is near rebound board/net; And make rebound board/net upset θ angle downwards: 8～20 °, angular dimension is adjusted by the rotation of batting and speed control, and strength is larger, above revolve byer force, angle is just larger, guarantees as possible continuous batting, to improve stability; Simultaneously by regulating adjustable height to make center (upper and lower 10cm is high in the central authorities) height of rebound board/net at 0.92m～1.1m place, to approach under battle conditions; Rebound board Facing material is preferentially selected the long glue that coefficient of friction is larger, plastic cement can be pasted and be fixed on wooden or not saturating steel flitch.This case for training drive energetically, drive stroke with promote attack ability.

If should select the slightly little plate in interior receipts angle with curved surface shaped rebound board/net, interior receipts angle α can select 8 °～16 °; This case recommends certain intercepting curved section of ellipse arc or exponential function shape as resilience curved surface.

Irregular surface can introduce Fig. 6/Figure 13 in the good situation of playing skill in, can further improve playing skill and swift degree.

Equally, for tennis/squash trainer, ground when above desktop, batting people with rebound board/net apart from slightly far away, rebound board/network plane θ angle that slightly dips down: 5～10 °, i.e. 4～10 ° of 10,20 integrated overturns in figure.

Scheme 3

This case is intended to improve trainer's chop ability, hits continuously the ability of chop, thereby improves playing skill.

Adopt a connection table batting mode, as Figure 17, batting people is apart from rebound board/net about 1.4m～2.0m, rebound board/net width 1.2～1.5m, height 0.6m～1.0m; Half billiard table or longer that the approximate ping-pong contest of the large low height of connection table is used, width 1.2～1.5m, length 1.2m～1.7m, desktop is near rebound board/net; Simultaneously by regulating adjustable height to make center (upper and lower 10cm is high in the central authorities) height of rebound board/net at 0.92m～1.1m place; And make the rebound board θ angle of upwards overturning: 10～30 °, angular dimension is directly related with rotation with the speed of ball, must guarantee the stable of speed in training, rotate stronger θ angle larger; The speed of ball is larger, and corresponding horizontal table top length setting is also larger.

Rebound board Facing material is preferentially selected anti-glue or the long glue that coefficient of friction is larger, glue face can be pasted and be fixed on wooden or not saturating steel plate.

If should select the slightly little plate/net in interior receipts angle with shaped form rebound board/net, interior receipts angle α can select 10 °～16 °; This case recommends certain intercepting curved section of ellipse arc or exponential function shape as resilience curved surface.

Corrugated irregular surface in can introducing Fig. 6/Figure 13 equally in the good situation of playing skill, can further improve playing skill and swift degree.

For tennis/squash trainer, ground, when above desktop, batting people is with rebound board/net apart from slightly far away, and rebound board/net entirety is slightly to updip θ angle: 0～10 °, i.e. and 0～10 ° of 10,20 integrated overturn in figure.

Scheme 4

This case is intended to improve trainer's continuous hard hit ability, to reach higher playing skill.

As Figure 18, people is directly towards rebound board/net in batting, and batting people is apart from the about 1.6m～3.0m of rebound board/net, rebound board/net θ angle of upwards overturning: 5～15 °, the speed of angular dimension and ball is directly related with rotation, must guarantee the stable of speed in training, rotates stronger θ angle less; The speed of ball is larger, and θ angle is less, erect-position from rebound board more away from.

If should select the slightly little plate in interior receipts angle with curve rebound board/net, interior receipts angle α can select 6 °～12 °; This case recommends certain intercepting curved section of ellipse arc or exponential function shape as resilience curved surface.

Rebound board table preferentially selects in material the long glue that coefficient of friction is larger, plastic cement can be pasted and be fixed on wooden, not saturating steel flitch, or spray elastomer coatings at wood based panel/corrosion resistant plate.

In can introducing Fig. 1, Fig. 6 or Figure 13 equally in the good situation of playing skill, checkerboard, corrugated or zigzag irregular surface, can further improve playing skill and paces agility.

For shuttlecock trainer, can first improve the height of supported on both sides bar, make to net center height more than 1.55m; In when smash, away from resilience net, batting people will turn over 5 °～10 °, θ angle on the net apart from the about 2.0m～3.5m of resilience net, can repeated smashes; Before training net when return of serve, can make that resilience is off the net turns over 0 °～10 °, people is apart from the about 1.5m～2.5m of resilience net in batting, reaches training effect.

Claims

1. adjustable rebound board, resilience net and a bracing or strutting arrangement of meeting sphere height and angle, by regulating both sides main body rack Liftable to meet batting people height and the far and near different needs of erect-position, simultaneously by this plate of suitable upset or net the adjustable angle of relatively carrying out direction of bowl to meet firmly size of batting people, far and near different demands.

2. as claim 1, this subject support means is characterised in that: inner bracing piece is inserted in outer support bar inside, each two fast pulleys or the universal wheel fixed of outer support bar base, a safe bow of the each connection in both sides inside and outside base; Two support bar horizontal directions are installed with the circular hole of fixed size, and barrel band inserts in the inside and outside support bar in good hole, with level altitude by rebound board or net demand requirement for height; The minimum altitude of support bar combination is 0.8m～1.2m, is up to 8～16, the middle hole of 1.4m～1.8m, must guarantee between hole equidistant; Simultaneously this rebound board or net can be by the gripper shoe of upset both sides and adjust assist fixed bar or rope regulate relative come the angle of direction of bowl; The inner bracing piece upper end journal bearing that is respectively connected and fixed, a stainless steel cylinder is fixed with nut in gripper shoe center, and this cylinder directly connects the journal bearing that inserts inner bracing piece upper end; Gripper shoe is installed with 8～16 circular holes, and circular hole guarantees equidistant, and middle two holes (axle both sides) spacing is the twice of adjacent holes distance; Rebound board brace summer inserts rebound board with determining with in bolt cover and in gripper shoe circular hole simultaneously, and the jack position of adjusting this brace summer in use can change rebound board/net height; During the support bar that upper end gripper shoe and lower end are inserted respectively in auxiliary fixed bar two combines, not only can fix rebound board angle but also can supplemental support, increase circular hole that nylon rope hitches main support rod and gripper shoe to fix rebound board simultaneously.

3. this rebound board or resilience net are designed to the changeable sphere of meeting and are characterised in that: this rebound board or net are met sphere can be designed to plane, ruled surface or irregular curved surface, ruled surface is from intercepting arbitrarily part in mathematics curved surface as meeting sphere, ball is moved in curved surface inner side, recommendation ellipse arc face of the present invention and exponential function shape curved surface; Ripple strip, zigzag or chess piece that irregular curved surface can be designed to parallel fluctuating scatter shape, and chess piece distribution shape is the irregular surface form that is studded with chess piece like the surface of the chess piece formation being studded with on I-go board or ruled surface.

4. as claim 1 and 2, arch lock tube has been designed in the behind of rebound board, is fixed on main structure panel by bolt and nut; In use, circular support beam passes arch hitch, then through the circular hole of gripper shoe, rebound board is hung between two side stands.

5. as claim 4, this rebound board textural association is characterised in that: can design the single sphere of meeting, also can be designed to positive and negative two sphere of meeting; This rebound board is made a bulk of entirety; Or make small piece plate, by lock tube and brace summer, small piece plate is spliced to form to large plane or curved surface.

6. as claim 3, ripple strip curved surface features is: in the corrugated curved surface rising and falling flat shape, the planar section length of each relief elements is 0～80mm, jog length 20～60mm, and height of concave convex is got 3～12mm; The ratio of jog length and height of concave convex gets 6～20, and size determines according to balls, the desirable sine and cosine shaped form of curve form or elliptic arc; Corrugated fluctuating continuous uniform distributes, and also can adjust arbitrarily customization density and distribute, to meet different needs; Ripple bar or corrugated plating material are high molecule plastic, alloy spring steel, this place recommendation polycarbonate, ABS, nylon or silicon-manganese spring steel; Ripple bar or corrugated plating are fixed on rebound board by adhesive, double faced adhesive tape, strong clamp or screw.

7. as claim 3, chess piece scatters the irregular curved surface rebound board of shape and is characterised in that: circular little protruding dish (like chess piece) diameter is got 10～80mm, and circular tappet height is got 3～30mm; The surface that circular little protruding dish is met ball is made into ruled surface, preferentially selects sphere, and pasting main rebound board one side is plane or ruled surface; The density of circular little protruding dish in plane rebound board distributes and can freely put or customize.

8. as claim 3,6 and 7, circular tappet can be designed to the chess piece that is magnetic, and is made up of the thermosetting plastics of obdurability, the inner appropriate magnetic iron powder of filling, plane rebound board is made to stainless steel or magnetic polymer material, assurance is inhaled firmly in plane rebound board so simultaneously.Also can in plane rebound board, put in advance the small sircle hole of arranging by any density, in the middle of the little protruding dish of circle, bore a hole simultaneously, make normal screws can pass circular tappet and rebound board, be locked by respective nut, be fixed on like this in rebound board.

9. as claim 2 and 5, rebound board material is alloy spring steel, aluminium alloy, thermosetting plastics, thermoplastic, solid wood or wood composite board, recommendation nylon sheet and silicon-manganese spring steel; Can before plate, fix one deck elastic gum, as rubber, silica gel or various ping-pong racket match glue, the elasticity having guaranteed and low noise; Recommend to stick long glue for table tennis training or body-building.

10. as claim 3, the present invention also provides one group of resilience net arrangement, and can overcome plate has larger noise, the weak shortcoming of bounce-back, be primarily characterized in that: resilience host body is by rectangle housing, cross-brace beam, vertical supporting bar, the sleeve of cross-brace beam correspondence and net string form; Net string is in the mode of clapping like tennis racket, net ball top through housing, and in the place that meets inner support bar or beam, directly around Shang Yiquan or more than a circle, then vertical pulling is in the string hole of housing; Deisgn product must guarantee smooth surface string hole and inner support bar or beam, selects smooth material to guarantee the durability of string; Lower end and housing interconnection place on vertical supporting bar, vertical supporting bar stretches out outside by circular hole, is fixed into overall structure by nut; In cross-brace beam and housing interconnection place, cross-brace beam stretches out housing, inserts sleeve inner; Sleeve skin is made up of high strength alloy steel, and internal layer is made up of high strength macromolecular material or other materials, is cut open a groove at vertical direction sleeve, and recess width is identical with the width of longitudinal housing, and housing can be packed in sleeve; In use, the sleeve that connects host's body is inserted in gripper shoe corresponding circle hole.

11. as claim 10, a kind of curved surface shaped resilience net, the longitudinal side that is housing with the main difference of rectangle structure is in change in shape, take the elliptic arc of intercepting as curved surface cross section, always curved 5 °～15 ° angles of direction of bowl, improve the control of training of human to ball, and then training for promotion efficiency greatly.

12. as claim 10, the wavy curved surface shaped resilience of a kind of sawtooth net, be that with the main difference of rectangle structure horizontal housing and cross-brace beam are all made into zigzag, angle of deviation (angle of serration rebound surface and resilience host body plane) is got 4 °～15 °, in training, resilience net can produce a lot of variations, the agility of whole body that can exacting practice batter, makes trainer reach fast middle-and-high-ranking level.