CN105080095A - Tennis net rack assembly - Google Patents

Abstract

The invention discloses a tennis net rack assembly, and belongs to the field of sports apparatuses. The tennis net rack assembly is convenient to move and adjust, and comprises a tennis net, rack rods and weight boxes. Four bearing box wheels are arranged at the lower portion of each weight box. A wedge-shaped wedge block is arranged below the wheel face on the side, facing the tennis net, of each box wheel. Every two wedge blocks are fixedly connected through an H-shaped wedge rod. The middle of each wedge rod penetrates through two sleeves fixed to the bottom of the weight box to be movably connected with the two sleeves. The portion, between the outer end of the corresponding outer sleeve and the outer end of the wedge rod, of each wedge rod is sleeved with a spiral spring. The inner end of each wedge rod protrudes out of the inner edge line of the corresponding weight box. Meanwhile, the positions, at the left ends of the two corresponding sleeves, of the lower edge of each wedge rod are each provided with a round and smooth protruding block. A fork-shaped rod downwards penetrates through a fork-shaped rod pipe on the vertical side face of each weight box to be movably connected with the fork-shaped rod pipe. The forked ends of each fork-shaped rod are located at the lower end and are processed to have inwards-inclining inclined faces instead of flat end faces. The lower end of each fork-shaped rod makes contact with the outer side face of the inner end of the corresponding H-shaped wedge rod below the fork-shaped rod.

Description

Tennis net braces assembly

Technical field

The invention belongs to sports apparatus field, specifically refer to the tennis net braces assembly for the sports center such as tennis or shuttlecock.

Background technology

The motion such as tennis or shuttlecock is a kind of ball game mode that people like, needs device net to wait the zone of action of being separately poised for battle both sides in this kind of sports center, tackles undesirable ball simultaneously, net is supported by the hack lever of both sides, and hack lever is then fixedly imbedded underground or connected by mass, fixes the good stability of buried hack lever but limits applying in a flexible way of place, and also inconvenience is finely tuned the net fluffed, the hack lever connected by mass often selects the box thing of a hollow to put into sand inside to strengthen weight to increase the stability of hack lever, the stability of this frame net mode is also passable, but it is very inconvenient that larger counterweight also makes it move, the situation of reality be the net strained originally after using some times because of stressed or natural material aging inevitable to fluff sagging, excessively sagging can affect use, change net frequently for also impossible popular body building place, this just needs outwards to finely tune to the hack lever of the support net being in both sides the state making it return to conform with the standard of setting with stretching net, it is very difficult that obvious larger counterweight makes hack lever move, the imperfection of this place all framves net facility is apparent, be sought after improving.

Summary of the invention

Object of the present invention is the technical scheme tennis net braces assembly providing the net of a kind of tennis or badminton field apparatus and the new of hack lever, and it can eliminate all not enough problem listed by said apparatus.

Technical scheme of the present invention realizes like this, it comprises net, hack lever, ballast box, four Load-bearing box wheels are had at described ballast box lower device, each case wheel has a wedge shape voussoir under its side wheel face towards net direction, be fixedly connected with by the tapered bar of I shape between voussoir, tapered bar is flexibly connected with it through being fixed on two sleeve pipes that ballast box goes to the bottom by the bar in the middle of it, the outer end of the sleeve pipe in outside to tapered bar outer end bar between bar upper sleeve through have a helical spring, the inner end bar of tapered bar protrudes from the inner edge line of ballast box inwards, also respectively be provided with a round and smooth projection at the tapered bar lower edge of two sleeve pipe left end head positions simultaneously, one fork arm is passed down through the fork arm Guan Yuqi being installed on the inboard facade of ballast box and is flexibly connected, the divergent ends of fork arm is in lower end and Dou Zuo inclined-plane, termination oblique surface machining inwards and non homogeneity end face, and the lower end of fork arm also touches the lateral surface of the inner end bar of the I shape tapered bar under it.

The invention has the beneficial effects as follows and hack lever can be allowed arbitrarily to regulate movement together with ballast box, constantly stretching net and the stability of rack can be kept, also can easily net and hack lever, ballast box be pushed away and move during flexible using area, convenient and practical.

accompanying drawing illustrates:

Fig. 1 is that the design illustrates the general assembly front view of rack assembly.

Fig. 2 be the ballast box of voussoir when being in locking case wheel state and under, the amplification front elevation (for the ballast box on the left of net assembly and hack lever) of each parts that are connected in it.

Fig. 3 is the partial enlargement front view (now fork arm under by) of voussoir when being in non-locking case wheel state.

Fig. 4 be the ballast box corresponding with Fig. 2 state and under, the right side view of each parts that are connected in it (now the inclined-plane, lower end of fork arm touches the lateral surface of the inner end bar of the I shape tapered bar under it).

Fig. 5 be the ballast box corresponding with Fig. 3 state and under, (I shape tapered bar is strutted mobile the disengaging and contact that case is taken turns together with voussoir by inner end bar that the inclined-plane, lower end of fork arm moves down the I shape tapered bar crossed under it inwards for the right side view of each parts that are connected in it, simultaneously projection enters in sleeve pipe whole tapered bar and case wheel slightly to appear on the stage in company with tapered bar and makes voussoir be separated from the contact with ground, and case wheel is in can free rolling unlock state).

Fig. 6 is the location status view (ballast box and case wheel dotted line indicate with the expression effect not affecting miscellaneous part) under ballast box and connector thereof overlook state.

Fig. 7 is the front view of voussoir, tapered bar, sleeve pipe and projection.

In each figure, 1 is net, and 2 is hack lever, and 3 is ballast box, and 4 is case wheel, and 5 is voussoir, and 6 is tapered bar, and 7 is spring, and 8 is projection, and 9 is sleeve pipe, and 10 is fork arm pipe, and 11 is fork arm.

detailed description of the invention:

The design is illustrated below in conjunction with accompanying drawing.

The design is made up of the net 1 between each hack lever 2 of the left and right sides, office, ballast box 3 and two hack levers, and hack lever is fixed on ballast box, the hack lever of both sides and ballast box symmetrical mounting, as Fig. 1 the design illustrate rack assembly general assembly front view shown in, on going to the bottom under ballast box 3, device has four Load-bearing boxs wheels 4 as dolly, it can allow ballast box move easily together with hack lever, have under each case wheel has a wedge shape voussoir 5 i.e. every side ballast box under its side wheel face towards net direction and take turns four supporting voussoirs with case, it can fill up the wheel face wedge angle between case wheel and ground, can effectively stop case to be taken turns in the rolling that this side up by this, overlooking effect by one between four voussoirs is that the tapered bar 6 of I shape is fixedly connected with, as Fig. 2, Fig. 3, Fig. 6, (with the ballast box on the left of net assembly and hack lever for example plots) shown in Fig. 7, tapered bar 6 is also flexibly connected with it through the same specification sleeve pipe 9 being fixed on two concentrics that ballast box 3 is gone to the bottom by the bar in the middle of it, sleeve pipe in outside is (for the direction of net, namely the direction of net side is inner, in two sleeve pipes near the sleeve pipe for the inside of net be the sleeve pipe of outside away from net) outer end to tapered bar outer end bar (left side bar) between bar upper sleeve through have one in being compressed the helical spring 7(of shape as shown in Figure 6), tapered bar can be allowed by this to drive voussoir jam-pack case wheel with the object reaching stop, the inner end bar (i.e. the bar of keeping right of I shape tapered bar) of tapered bar slightly protrudes from the inner edge line (as shown in Figure 6) of ballast box inwards, position simultaneously also near the left end head being in two sleeve pipes 9 of tapered bar lower edge is respectively provided with a round and smooth projection 8, it can slide into when tapered bar moves to right its lower convex footprint characteristic of sleeve pipe internal cause slightly raise tapered bar and voussoir makes voussoir be separated from and the contact on ground (as shown in Figure 3), one wishbone and fork arm 11 are passed down through the fork arm pipe 10 being installed on ballast box 3 inboard (right side) facade immediate vicinity and are flexibly connected with it, the divergent ends of fork arm 11 is in lower end and Dou Zuo inclined-plane, the termination oblique surface machining of (to the right) and non homogeneity end face (as shown in Fig. 2 Fig. 3 Fig. 4 Fig. 5) inwards, the lower end of fork arm also touches the lateral surface of the inner end bar of the I shape tapered bar under it, by this can when needed by lower by fork arm by fork arm lower surface inclined-plane inwards (to the right) support and push away tapered bar (as shown in Fig. 3, Fig. 5).Like this, the basic structure composition of the tennis net braces assembly of the design is just described, during concrete operations use, when needing outside for the case of both sides wheel adjustment to move (object is that the too sagging of net middle part eliminated by stretching net), first voussoir originally in lock-out state can make it be separated from lock-out state by lower by fork arm 11 by operator, namely by Fig. 2, Fig. 4 shape becomes Fig. 3, Fig. 5 shape, as previously mentioned, voussoir 5 can therefore adjustment operation and some distances that move up to the right, be separated from and taken turns with case and the locking on ground contacts, case wheel is free to not receive the left-right rotation of restriction, then can outwards promote ballast box one segment distance make net reach tensioning (can the only ballast box of operation side or all outwards passing of both sides) shape after again on move fork arm and set back under the resilient force of spring by tapered bar and voussoir, namely by Fig. 3, Fig. 5 shape returns to Fig. 2, the locking state of Fig. 4 shape, complete the adjustment operation of a tensioning net, also be same mode of operation when place is because using needs to be removed completely by frame net assembly flexibly in addition, being separated from the hack lever of locking state and ballast box can light promotion as small handcart, and once locking, sufficient one way stable can be possessed, not only reach and can finely tune and easily push open but also can the motionless easily purpose of design in fixed position, meet the body building needs of this type of place people greatly.

Claims (1)

1. a tennis net braces assembly, it comprises net, hack lever, ballast box, it is characterized in that there are four Load-bearing box wheels at described ballast box lower device, each case wheel has a wedge shape voussoir under its side wheel face towards net direction, be fixedly connected with by the tapered bar of I shape between voussoir, tapered bar is flexibly connected with it through being fixed on two sleeve pipes that ballast box goes to the bottom by the bar in the middle of it, the outer end of the sleeve pipe in outside to tapered bar outer end bar between bar upper sleeve through have a helical spring, the inner end bar of tapered bar protrudes from the inner edge line of ballast box inwards, also respectively be provided with a round and smooth projection at the tapered bar lower edge of two sleeve pipe left end head positions simultaneously, one wishbone is passed down through the fork arm Guan Yuqi being installed on the inboard facade of ballast box and is flexibly connected, the divergent ends of fork arm is in lower end and Dou Zuo inclined-plane, termination oblique surface machining inwards and non homogeneity end face, and the lower end of fork arm also touches the lateral surface of the inner end bar of the I shape tapered bar under it.