CN2104683U - Fraoe of metal racket - Google Patents

Abstract

The utility model relates to a racket frame of a metal racket, which comprises a hollow frame squeezed and molded by aluminum alloy material, wherein the hollow frame is bent to be manufactured into an elliptic racket frame of which the lower part is extended with symmetrical handles; a plurality of wire holes are drilled on the racket frame so that a racket surface is staggered and braided by net wires along the longitude direction and the latitude direction. The cross section of the frame forms a half shuttle shape, and the outer margin of the frame is provided with a smooth arc surface. The center of a reference plane on the inner margin of the frame is extended with an arch bridge part towards the center of the racket surface, and the distance between the vertex of the arc surface of the outer margin and the reference plane is greater than the distance between the vertex of the arch bridge part and the reference plane. Thus, a racket with high intensity and large racket surface is formed.

Description

Fraoe of metal racket

The utility model relates to a kind of wire netting racket, particularly has the frame of the good Metal racket of big face, ball-handling property.

The common metal tennis racket mainly contains two kinds of patterns:

(1) as shown in Figure 1, be the Metal racket that the section of framework 1 in the past is " I shape ", after the framework 1 of this racket extruded machine-shaping, section all was " I-shaped shape ", and the integral body of this frame 2 structures has following advantage on manufacture process:

Frame 2 just can directly utilize the processing of punching facility before imposing bending process, once go out the line hole of predetermined number on the frame, therefore, can simplify widely on whole work flow, also can reduce cost of processing.Though above-mentioned wire netting racket has the easy and lower-cost advantage of punching processing, but the inside and outside edge of racket all be concaved with groove 4,5 around, the inside and outside edge concave, convex of overall appearance all can be seen, not too graceful, therefore, on effective sale, reach the racket of consumer's more bad often level in the heart, and influence price; The structural strength that can realize this frame on the structure of section integral body significantly a little less than, so, when face bears bigger strength of batting, often because stressed strong excessively, and make central section slightly be out of shape (seeing also shown in Figure 1), and then the integral body of frame 2 causes distortion, and influence batting ball-handling property stable causes the damage distortion of racket integral body.

(2) another kind is that extrusion forming is the wire netting racket of shuttle shape, the section configuration of the framework 6 of this type racket is shuttle shape (as shown in Figure 2), because the suitable curved arc of outer rim shape of framework 6 is level and smooth, therefore, outward appearance more aforementioned " I-shaped " Metal racket more smooth smooth and easy, graceful, intensity is also higher, so this type of Metal racket is belonging to higher racket ranks on the market usually, and preferable image product is arranged; The central one of the wire netting racket section of this shuttle shape extrudes into two shafts of rib arranged side by side 7; so the more aforesaid I-shaped Metal racket of cost will come highly; because the central thickness broad of shuttle shape metal racket frame; therefore; face 8 is narrower than general racket, and just striking surface is less, so; frame hits in square stance regular meeting, and the probability that influence is hit a ball.

Because the racket face is made of the netting twine braiding, so face is little to be exactly to represent the longitudinal and transverse length of netting twine shorter, when ball impact racket face, see also shown in Figure 3ly, netting twine can make face cause recessed curved state after stressed, if, the drop point of ball is positioned at the centre 60 of face, the position of placement is just also in the central authorities of longitudinal and transverse netting twine so, and the recessed curved position of face is also in the centre of face, so, the bounce-back path of ball is the vertical direction bounce-back of no drift angle, and this is best batting district; With regard to actual experience of the playing ball square stance of swinging the bat as can be known, striking point on the ball often can't be positioned at the centre of racket exactly, usually all hit the side of face, therefore, usually cause the bounce-back path of ball that the situation of vertical bias and horizontal bias is arranged, just striking point on the ball and frame both sides architrave is inequality apart from length, and the compressing netting twine causes the slope of netting twine both sides also inequality, please cooperate consult shown in Figure 4, when the striking point on the ball 64 and 62 of ball on face falls within on the identical horizontal level of vertical netting twine, the length of ordinate 71-71 is short than the length of ordinate 72-72, the distance of netting twine 64 to 71 is short than 62 to 72 distance, so the distortion slope after stressed is big and deformation angle also big (θ 1 is greater than θ 2), and is just bigger apart from the bias angle theta 1 of 71-71 bounce-back than short-term, and the bounce-back bias angle theta 2 of the ordinate 72-72 of longer line-spacing is little; See also shown in Figure 4, the bounce-back drift angle of representing horizontal netting twine, this result is identical with aforesaid vertical netting twine, just, the drop point of ball is same as the drop point of upright position 64,63, and the bounce-back bias angle theta 4 of the horizontal line 74-74 of longer line-spacing is less than the bounce-back bias angle theta 3 than the horizontal line 73-73 of short-term distance; In aforesaid racket structure, the length of netting twine has great relation to the ball-handling of batting as can be known, when netting twine more in short-term, the slope of recessed bending deformation is bigger, the drift angle of reflection is also relatively bigger, causes the batting of face more undesirable.

Main purpose of the present utility model is to provide a kind of frame of Metal racket, frame structure by the special frames bending, intensity raising, the face of framework are increased, and then the big face of power that obtains batting, ball-handling directionality and the preferable Metal racket of stability.

The utility model relates to a kind of frame of Metal racket, it comprises hollow frame, frame, the outer rim of described framework is smooth arc shaped surface, there is the shank of symmetry the below of described frame, be drilled with a plurality of lines hole on the described frame, described line hole becomes face for netting twine along the direction weaving through, latitude, it is characterized in that: be extended with arch bridge portion in the central authorities of described framework inner edge datum plane toward the central authorities of face, the framework that described arch bridge two ends are connected is horizontal.Distance between the summit of described frame outer rim arc shaped surface and the described framework inner edge datum plane is greater than the distance between described arch bridge portion summit and the described datum level.Described inside of frame is provided with two shafts of rib side by side, and described arch bridge portion is extended by described shaft of rib, and described arch bridge portion is circular-arc.

Specifically, the frame of Metal racket described in the utility model, main hollow frame by the metal material extrusion forming, be elliptoid frame through bending process, there is the shank of symmetry the below of frame, be drilled with a plurality of lines hole on the frame, become for the face of batting for the direction weaving of netting twine along warp, latitude; It is characterized in that: frame is bent with the framework of metal material and is formed, and the framework section is half shuttle shape, and the outer rim of framework is smooth arc shaped surface, is extended with the arch bridge portion of suitable radian toward the face center direction in the centre of framework inner edge datum plane; Can knit out the face that can bear the high tensions poundage by above-mentioned frame structure, make the aggressiveness of batting more brave and fierce, the ball-handling direction is more stable.

Advantage of the present utility model is as follows:

(1) overall appearance of the present utility model is possessed smooth arc shaped surface, and has splendid aesthetic appearance.

(2) framework is the section configuration via particular design, and intensity is very high, and the netting twine that can bear high tensions on reality is used stretches, and knits out the face of higher poundage, and is therefore just more brave and fierce on the power of batting, aggressive better.

(3) special Frame Design is under the situation that intensity does not subtract, and the increase face not only can improve the probability of hitting of batting, also promotes widely on the stability of ball-handling direction.

In sum, the frame of Metal racket of the present utility model, arch bridge portion of being extended from frame inner edge central authorities and the reinforced ribs between the arch bridge portion not only make racket can bear high strength and bounce, and big face can be provided, and the bounce-back drift angle of batting is reduced, the directionality of ball-handling and stability are improved.

Brief Description Of Drawings:

Shown in Figure 1 is the sectional schematic diagram of " I-shaped " wire netting racket frame in the past;

Shown in Figure 2 is the framework sectional schematic diagram of " shuttle shape " wire netting racket in the past;

Shown in Figure 3 is that " shuttle shape " wire netting ball striking point on the ball 64,62 of patting face made the slope schematic diagram of vertical netting twine distortion in the past;

Shown in Figure 4 is that " shuttle shape " wire netting ball striking point on the ball 64,63 of patting face made the slope schematic diagram of horizontal netting twine distortion in the past;

Shown in Figure 5 is the schematic perspective view of the utility model preferred embodiment framework;

Shown in Figure 6 is the 71-71 generalized section of Fig. 5;

Shown in Figure 7 is the 72-72 generalized section of Fig. 5;

Shown in Figure 8 is the position view of the face striking point on the ball of the utility model preferred embodiment;

Shown in Figure 9 is the schematic diagram of the recessed curving rate of the utility model face striking point on the ball compressing netting twine;

Shown in Figure 10 is the schematic diagram of the recessed curving rate of face striking point on the ball compressing netting twine in the past.

The frame structure of the utility model Metal racket, see also shown in Fig. 5,6,7,8, racket mainly is the hollow frame 10 that is got by Al-alloy metal material institute's extrusion forming of light weight, the frame 11 of framework 10 bending process ovalisation is reached the symmetrical shank 12 of continuity below frame 11, on frame 11, be drilled with a plurality of lines hole 111, supply the face 14 of batting for netting twine 13 along the direction weaving of warp, latitude, cover intrinsic lever (not showing on the figure) on shank 12 is to provide complete racket.The section of framework 10 is half shuttle shape, the outer rim 101 of framework 10 is the bigger ganoid arc shaped surfaces of radian, the less arch bridge portion 103 of radian that arches upward is extended toward the place of face central authorities in the centre of the datum plane 102 on framework 10 inner edges, the framework 10 at arch bridge portion 103 two ends is horizontal, and the two ends of arch bridge portion 103 extend to two shafts of rib 104 of framework 10 inside; The distance of the mid point 202 on summit 201 that it should be noted that outer rim arc shaped surface in the present embodiment and the datum level is greater than the distance of mid point on inner edge arch bridge portion 103 summits 203 and the datum level, and just 201 to 202 distance is greater than 203 to 202 distance; Generally the outer rim middle position at frame 11 can impose punch process and make the outer rim depression of frame 11 that arc shaped surface 112 be arranged, and reprocessing is drilled with line hole 111(as shown in Figure 7), for being nested with of racket guard strip (not showing on the figure), wearing fork for netting twine 13 again and interweave.

Following is architectural feature of the present utility model:

See also shown in Figure 6, half shuttle shape section by the utility model frame, the smooth arc shaped surface of outer rim 101, because two inner shafts of rib 104 are adopted the structure that one is extended with arch bridge portion 103, be equivalent to directly whole frame 11 is being born the effect that has reinforcement again on the stayguy direction of netting twine (shown in the arrow on Fig. 8), therefore, frame 11 intensity of the present utility model can reach the high strength requirement of racket really; See also Fig. 6,7, shown in 8, framework 10 sections of the present utility model are half shuttle shape, and the distance (203 to 202) of arch bridge portion 103 summits 203 and datum plane 102 is less than the distance (201 to 202) of outer rim 101 arc shaped surface summits 201 with datum plane 102, just, when the framework 10 of the utility model half shuttle shape is bent into standard-sized racket, when framework 10 is compared with the face of the racket that adopts shuttle shape framework bending forming, the face ratio half shuttle shape Metal racket in the past that can find framework 10 is also big, therefore, face is exactly greatly that expression is vertical, laterally the distance of netting twine is longer, so, when the utility model and in the past racket face striking point on the ball were same as at 65, the heading of the recessed curved situation of vertical netting twine of the present utility model and bounce-back bias angle theta 5 behind the ball impact and ball as shown in Figure 9; In the same manner, the heading of the recessed curved situation of vertical netting twine of " shuttle shape " Metal racket and bounce-back bias angle theta 6 behind the ball impact and ball as shown in figure 10 in the past, obviously, with both mutually more as can be known, vertical netting twine 75-75 of the present utility model is along with the structure of frame changes and increases, ratio is the line-spacing 76-76 length of the vertical netting twine of Metal racket of half shuttle shape of unmodified in the past, so, vertical netting twine 75-75 of the present utility model is longer than in the past apart from the length of architrave, the distortion slope ratio is in the past little, bounce-back drift angle relatively also littler (θ 5 is less than θ 6) than in the past, therefore whole face seems more accurate on batting ball-handling property; Laterally the situation of netting twine is also identical, has also promoted the stability of ball-handling.

Claims (3)

1, a kind of frame of Metal racket, it comprises hollow frame, frame, the outer rim of described framework is smooth arc shaped surface, there is the shank of symmetry the below of described frame, be drilled with a plurality of lines hole on the described frame, described line hole becomes face for netting twine along the direction weaving through, latitude, it is characterized in that: be extended with arch bridge portion in the central authorities of described framework inner edge datum plane toward the central authorities of face, the framework that described arch bridge two ends are connected is horizontal.

2, according to the frame of the described Metal racket of claim 1, it is characterized in that: the distance between the summit of described frame outer rim arc shaped surface and the described framework inner edge datum plane is greater than the distance between described arch bridge portion summit and the described datum level.

3, according to the frame of the described Metal racket of claim 1, it is characterized in that: described inside of frame is provided with two shafts of rib side by side, and described arch bridge portion is extended by described shaft of rib, and described arch bridge portion is circular-arc.

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