CN203736817U

CN203736817U - Arm bending corrector for volleyball digging

Info

Publication number: CN203736817U
Application number: CN201420111020.1U
Authority: CN
Inventors: 黄洁如; 谷晨; 李晓龙; 胡有镭
Original assignee: Ningbo University
Current assignee: Ningbo University
Priority date: 2014-03-13
Filing date: 2014-03-13
Publication date: 2014-07-30
Anticipated expiration: 2024-03-13

Abstract

An arm bending corrector for volleyball diggingcomprises a fixed sleeve (1), a movable correcting plate (2), locknuts (3), rotating handles (4) and bolts (5), wherein the fixed sleeve adopts a cylindrical structure with an inner hole slightly larger than an arm, two ends are located on the same circumference surface, and three screw holes are uniformly distributed in each end; the movable correcting plate equipped with the bolts is mounted in the fixed sleeve, and the bolts penetrate out from the screw holes of the fixed sleeve; and the locknuts are mounted on the bolts extended from the screw holes of the fixed sleeve. The main structure of the arm bending corrector consists of a fixed part (the fixed sleeve) and a movable part (the movable correcting plate), tightness of the corrector can be adjusted flexibly, and the inner-diametercircumferenceof the corrector for sleeving the arm can be also adjusted. During digging, the arm bending corrector is nested to an elbow, the movable correcting plate is adjusted according to the thickness of the arm, and an exercisercan be helped tokeep arm unbending during digging. The arm bending corrector for volleyball digging is suitable for a volleyballexerciser to use during digging exercise.

Description

Volleyball front forearm pass arm bending rectifier

Technical field

The utility model relates to a kind of vollyball arm bending rectifier, belongs to volleyball training equipment technical field.

Background technology

Dig technology is technology basic, the most conventional in volleyball movement, and many beginners contact volleyball movement from study dig technology.Dig specification requirement two arms stretch, and with forearm radius position pad, hit vollyball; Beginner learns dig technology, and the error of performance the most easily occurring, is exactly elbow joint bending, cause two forearms separately, arm can not stretch, like this, on the fist face that ball or pad are embraced at two hands, pad at an arm batting deficient in stability, as easy as rolling off a log error.Current teaching method, teacher corrects this class malfunction by a series of teaching methods such as action modeling, language prompting, the error correction of static arm posture, free exercise exercises, but often attend to one thing and lose sight of another while setting up due to beginner, especially at ball during near health, the batting of subconsciously can bending arms, the action of therefore correcting a mistake usually will take long to.Analysis reason is, although taked the method for a series of actions of correcting a mistake, but in practitioner's dig in a flash, the shot that he takes is controlled by its motor center, and the information of the action of correcting a mistake does not now also form conditioned reflex deeply and firmly at its motor center, therefore usually occur that dig action static, free-hand in training can correctly complete, and there is crooked situation in arm when real dig.For this situation, design a kind of practitioner of help and can constantly correct the equipment that it occurs that curved elbow is cranked arm in dig process, for improving the vollyball beginner technological learning efficiency of setting up, there is very important value.

The auxiliary appliance design and researchp achievement of correcting for dig arm action is at present few, existing design mainly contains following several: publication number CN201404656 discloses a kind of pass learning-assistant teaching tool of volleyball, on wrist top, adopt two oversleeves, on two oversleeves, have rubber fender, its effect is the correct striking spot on the ball of prompting practitioner.Publication number CN202277656U discloses auxiliary training device for volleyball digging, it is a kind of device that connects hand and pin, one end of trick restriction rope is fixed in hand strap, the other end is fixed in tape, when designer utilizes this device to wish to help practitioner to set up, energy whole body hormany force, avoids occurring simple carry arm dig and the stiff situation of body posture.Although these designs have certain value for dig technological learning above, while all having for correction dig, arm bending is not helpful, and it is blank that research and design in this respect also belongs to.

Summary of the invention

The purpose of this utility model is that, according to the defect of the auxiliary appliance existence of existing dig arm action correction, the utility model discloses a kind of vollyball arm bending rectifier.

The technical scheme that realizes the utility model object is that a kind of vollyball arm bending of the utility model rectifier is comprised of fixed muffle, movable rectification plate, rotating handle, locking nut, bolt, split pin, pressing plate and screw.The movable rectification plate that bolt is housed is arranged in fixed muffle, and bolt passes from fixed muffle screw; Locking nut is arranged on the screw rod stretching out from fixed muffle screw, and bolt top and rotating handle middle part are all drilled with the small sircle hole that can insert for split pin, and rotating handle is fixed on bolt top by split pin.

Fixed muffle is slightly large columnar structured of interior boring ratio arm, and as shown in Figure 1 and Figure 2, its two ends, on same periphery, are respectively uniformly distributed three screws, have circular arc activity rectification plate to be placed in fixed muffle; Curved watt of shape of movable rectification plate, at movable rectification plate two ends, arrange respectively and fixed equally distributed three bolts, as shown in Figure 4, the socket cap of bolt is fixed on movable rectification plate outer surface by pressing plate, the socket cap of bolt can rotate freely, but can not disengaging activity rectification plate, bolt is perpendicular to circular arc activity rectification plate arc surface; The six roots of sensation bolt at circular arc activity rectification plate two ends overlaps with the center line of bolt hole at fixed muffle two ends, and the six roots of sensation bolt on circular arc activity rectification plate can pass freely through six screws at fixed muffle two ends simultaneously; Locking nut is arranged on the bolt stretching out from fixed muffle screw, and rotating handle is fixed on bolt top by split pin.

During the work of the utility model volleyball front forearm pass arm bending rectifier, as shown in Figure 1, Figure 3, first this rectifier is enclosed within to arm ancon, rotating handle is rotated clockwise, and bolt drives circular arc activity rectification plate to move down gradually, is adjacent to sportsman's arm, when feeling upper arm and forearm, sportsman all by movable rectification plate, compressed, can rotational lock nut, movable rectification plate position is fixed, prevent from becoming flexible at the volley.

By standing part,---fixed muffle and movable part---movable rectification plate two parts form the utility model volleyball front forearm pass arm bending rectifier, and the fixed muffle itself that is inserted in ancon just has the effect that helps fixing arm, restriction arm bending.The use activity rectification plate arm bending rectifier internal diameter that can make to set up has certain adjustable degree, to adapt to the arm of different thicknesses; Simultaneously can also the fastening degree of spacer player brachiocylloosis rectifier to arm.

Wear the time span of arm bending rectifier, can determine according to the degree of practitioner's malfunction, generally, after three practice lessons, observe its arm and can independently stretch, to determine whether need to continue to wear arm bending rectifier; Also can in hall training session, alternately wear and extract rectifier, allow practitioner using rectifier to know from experience on the basis of stretching the feel of the cushion arm feel of the ball, form as early as possible the motor habit that initiatively stretches arm dig.

The beneficial effects of the utility model are that the utility model is simple in structure, easy to use, can be used for the practitioner of different arm thicknesses; When training vollyball, the person that is suitable for volleyball practice uses.

Accompanying drawing explanation

Fig. 1 is volleyball front forearm pass arm bending rectifier structural representation; Fig. 2 is fixed muffle structural representation;

Fig. 3 is bolt, locking nut and rotating handle structural representation; Fig. 4 is pressure plate structure enlarged diagram;

Picture in picture number: the 1st, fixed muffle; The 2nd, movable rectification plate; The 3rd, locking nut; The 4th, rotating handle; The 5th, bolt; The 6th, split pin; The 7th, pressing plate; The 8th, screw.

The specific embodiment

The specific embodiment of the present utility model is as follows:

The present embodiment vollyball arm bending rectifier is by fixed muffle 1, movable rectification plate 2, locking nut 3, rotating handle 4, bolt 5, split pin 6; Pressing plate 7 and screw 8 form.Fixed muffle 1 is an internal diameter than slightly large columnar structured of arm, as shown in Figure 1 and Figure 2; The two ends of fixed muffle 1, on same periphery, are respectively uniformly distributed three screws, and movable rectification plate 2 is placed in fixed muffle 1; At movable rectification plate 2 two ends, arrange respectively and fixed equally distributed three bolts 5, as shown in Figure 4, the socket cap of bolt is fixed on movable rectification plate 2 outer surfaces by pressing plate 8, the socket cap of bolt 5 can rotate, but can not disengaging activity rectification plate 2, bolt 5 is perpendicular to circular arc activity rectification plate 2 arc surfaces.The six roots of sensation bolt 5 at movable rectification plate 2 two ends overlaps with the center line of bolt hole at fixed muffle 1 two ends, and the six roots of sensation bolt 5 on movable rectification plate 2 can pass freely through six screws at fixed muffle 1 two ends simultaneously; Locking nut 3 is arranged on the bolt 5 stretching out from fixed muffle 1 screw, and rotating handle 4 is fixed on bolt 5 tops by split pin.

Fixed muffle 1 adopts polyurethane material to make, and polyurethane material has certain rigidity, but simultaneously more pliable and tougher again, can not cause and wear discomfort; As shown in Figure 2, fixed muffle is cylindrical, in the position hollow out of the movable rectification plate 2 of correspondence, to alleviate the weight of fixed muffle 1.2 curved watts of shapes of movable rectification plate are also to be made by polyurethane material.

During the work of the present embodiment volleyball front forearm pass arm bending rectifier, as shown in Figure 1, Figure 3, first this rectifier is enclosed within to arm ancon, by 6 rotating handles 4 rotation clockwise respectively, movable rectification plate 2 moves down gradually, is adjacent to sportsman's arm, when feeling upper arm and forearm, sportsman all by movable rectification plate 2, compressed, can 6 rotational lock nuts, movable rectification plate 2 positions are fixed, prevent from becoming flexible at the volley.When exercise completes, can first unclamp locking nut, then counterclockwise rotate rotating handle 4, this rectifier is taken off from arm.

Claims

1. a volleyball front forearm pass arm bending rectifier, is characterized in that, described rectifier is comprised of fixed muffle, movable rectification plate, rotating handle, locking nut, bolt, split pin, pressing plate and screw; The movable rectification plate that bolt is housed is arranged in fixed muffle, and bolt passes from fixed muffle screw; Locking nut is arranged on the screw rod stretching out from fixed muffle screw, and bolt top and rotating handle middle part are all drilled with the small sircle hole that can insert for split pin, and rotating handle is fixed on bolt top by split pin.

2. volleyball front forearm pass arm bending rectifier according to claim 1, is characterized in that, described fixed muffle is slightly large columnar structured of interior boring ratio arm, and its two ends, on same periphery, are respectively uniformly distributed three screws.

3. volleyball front forearm pass arm bending rectifier according to claim 1, it is characterized in that, curved watt of shape of described movable rectification plate, movable rectification plate two ends arrange has respectively fixed equally distributed three bolts, the socket cap of bolt is fixed on movable rectification plate outer surface by pressing plate, the socket cap of bolt can rotate, but can not disengaging activity rectification plate, and bolt is perpendicular to circular arc activity rectification plate arc surface.

4. volleyball front forearm pass arm bending rectifier according to claim 1, it is characterized in that, the six roots of sensation bolt at described movable rectification plate two ends overlaps with the center line of bolt hole at fixed muffle two ends, and the six roots of sensation bolt on circular arc activity rectification plate can pass freely through six screws at fixed muffle two ends simultaneously.