CN2147017Y

CN2147017Y - Shock damper structure for racket

Info

Publication number: CN2147017Y
Application number: CN93201021U
Authority: CN
Inventors: 罗光男
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-30
Filing date: 1993-01-30
Publication date: 1993-11-24
Anticipated expiration: 2003-01-30

Abstract

The utility model relates to a shock damper structure for a racket, in which concave space is arranged in the center of the both sides of the circumference of the inner side of a racket frame, and the lower side of the threading holes of the racket frame is formed into a step-shaped supporting seat to fixedly insert elastic blocks to make the shock of netting string be impeded by the elastic blocks absorbing shocking kinetic energy when a ball is flapped, so the shock of the racket frame and the netting string can be absorbed largely, and the purpose of damping shock rapidly is achieved.

Description

Shock damper structure for racket

The utility model relates to a kind of racket, particularly relates to a kind ofly being provided with elastomer block at the inboard periphery of racket and compressing netting twine, has the three and nine clock shock damper structure of the racket of shock-absorbing effect.

The frame of general racket mostly is vertically long laterally short oval and be provided with most perforation netting twines according to vertically and be horizontally through the perforation weaving and become mesh, with as the batting use; Form the swing that seesaws when the square stance netting twine will produce vibration, be easy to be sent to user's hand, cause athletic injury through frame.

For avoiding frame to be subjected to too much, excessive vibrations, the frame producer has designed the structure or the device of multiple damping, be netting twine to be passed bar nail be socketed on the perforation of frame and fix in the past, make the vibrations of netting twine absorb a part, yet the vibration that netting twine square stance netting twine produces does not weaken, still have very big amplitude and very long time of vibration via the bar nail; So netting twine still keep the vibration of large amplitude very and time long disappear also slow, so damping effect is unsatisfactory.

Main purpose of the present utility model, provide a kind of three and nine clock shock damper structure of racket, establish supporting seat in inboard periphery both sides correspondences " ten " position, block for being embedded elastomer block with racquet frame, and netting twine one side leans elastomer block, the amplitude of netting twine batting vibrations is stopped and absorbing vibration kinetic energy by elastomer block, the vibrations of netting twine are rapidly disappeared reach the effect of vibration damping.

According to the three and nine clock shock damper structure of a kind of racket of the present utility model, include racquet frame, extend a frame at an end of its shank, the racquet frame side face is provided with most perforation; The inboard periphery both sides correspondences " ten " of racquet frame position, block is provided with two supporting seats, and supporting seat forms the section difference and just is positioned at the perforation lower edge and establishes a groove, and two elastomer block are embedded in the groove fixing, and the contiguous perforation of elastomer block end face lower edge forms one and compresses face.

Netting twine passes perforation and becomes mesh according to footpath, latitude direction weaving, netting twine passes perforation and the one side leans the face that compresses in elastomer block, make the amplitude of netting twine batting be stopped and absorbing vibration the vibration that makes netting twine lower amplitude fast and lower the arrival racquet frame by the face of compressing.

Be elaborated below by preferred embodiment and accompanying drawing three and nine clock shock damper structure to racket of the present utility model, in the accompanying drawing:

Fig. 1 is the schematic diagram of the utility model preferred embodiment;

Fig. 2 is the part three-dimensional view of the utility model preferred embodiment.

Fig. 3 is that the batting of the utility model preferred embodiment makes the crooked schematic diagram that produces swing campaign formation vibration of netting twine.

Fig. 4 is that the batting of the utility model preferred embodiment makes the crooked schematic diagram that produces swing campaign formation vibration of netting twine.

Fig. 5 produces the explanation schematic diagram of amplitude when to be the utility model preferred embodiment because of the batting of Fig. 4 make netting twine crooked.

Fig. 6 is the amplitude that produces when making netting twine crooked of the utility model preferred embodiment batting and frequency and the schematic diagram that weakens rapidly.

As shown in Figure 1, 2, the three and nine clock shock damper structure of a kind of racket of the present utility model, it mainly is to be embedded elastomer block (40) by racquet frame (20), the netting twine of predetermined number (30) combines.

The shank (21) of racquet frame (20) thinks that for socket handle (22) hand grips use, and shank (21) one ends are extended with frame (23); Frame (23) is ellipse and extends and have suitable thickness and width and make it have enough intensity, and most perforation (24) run through the anchor ring central authorities of frame (23) and suitably are listed as apart from spacer ring at interval along side face; Frame (23) both sides central authorities (corresponding to and 9 positions of clock) are located in two recessed spaces (25) at 3, as shown in Figure 2, recessed space (25) downside is formed with the supporting seat (26) that is the stage shape and extends suitable length to both sides, supporting seat (26) forms one section difference (27) in abutting connection with perforation (24) lower edge, is provided with groove (28) in the section poor (27); Netting twine (30) covers bar nail (31) via perforation (24), and netting twine (30) passes bar nail (31) and becomes wire side to use for batting according to perforation (24) weaving that footpath, weft direction pass frame (20).

Elastomer block (40) correspondence is entrenched in the groove (28), and elastomer block (40) end face is formed with the face of compressing (41), compresses the contiguous perforation of face (41) (24) lower edge, and the top that compresses face (41) leans against on the netting twine (30).

The three and nine clock shock damper structure of the utility model racket expects that the effect that reaches is as follows:

By above-mentioned structure as can be known, when netting twine (30) passes perforation (24) weaving wire side, netting twine (30) just is positioned at " ten " block of racket in the position, recessed space (25) of frame (20), " ten " block is the highest position of racket batting frequency, and netting twine (30) is unidirectional against firmly compressing face (41) structure in abutting connection with line segment in passing position, recessed space (25).

Work as square stance, ball impact netting twine (30) bending of flight, shown in Fig. 3,4, bounce that netting twine (30) causes and bounce-back speed make ball bounce-back flight, netting twine (30) articulates in frame apart from two ends across frame (20) and will produce reciprocal beat motion between the restriction point that forms and form vibration, promptly produces very big to be sinusoidal amplitude and with the continuous wave of high frequency vibration formation.

Netting twine (30) is positioned at recessed space (25) part, the amplitude of netting twine (30) is and leaves or move towards the face of compressing (41), netting twine (30) amplitude leans near forming towards the face that compresses (41) of elastomer block (40), netting twine (30) will be subjected to the face of compressing (41) in abutting connection with the inboard line segment of frame (20) to be stopped, and produce drag and the amplitude of netting twine (30) is greatly reduced, as shown in Figure 5, netting twine (30) solid line is represented to be subjected to the face of compressing (41) and is stopped, the movement locus that the amplitude of shock-absorbing reduces, chain-dotted line represents that netting twine is not subjected to the face of compressing and stops, the movement locus than large amplitude of shock-absorbing, obvious netting twine (30) is subjected to the face of compressing (41) and stops that amplitude reduces greatly.

Elastomer block (40) has suitable elasticity can absorb the vibrations kinetic energy that netting twine (30) vibration leans the face of compressing (41), and the amplitude of netting twine (30) vibrations reduces, and shakes kinetic energy simultaneously and also reduces, and makes the frequency of netting twine (30) vibration reduce significantly; When the face of compressing (41) is left in netting twine (30) vibration is with the frequency after weakening, the amplitude action, (solid line represents that the vibrations of the utility model netting twine are stopped as shown in Figure 6, and reduce the situation that amplitude of vibration bounce-back disappears it fast, chain-dotted line represents that netting twine is not compressed, the situation that its amplitude slowly weakens), when the vibration of netting twine (30) again when the face of compressing (41), netting twine (30) similarly is subjected to the face of compressing (41) and stops absorbing vibration kinetic energy, the frequency of netting twine (30), amplitude reduces once more in a large number, and inactive state is got back in very fast disappearance, so continue, the amplitude and the frequency of netting twine (30) vibration are reduced fast, the vibrations of netting twine (30) are absorbed and weaken, and the vibrations that are delivered to frame also reduce fast, and the vibration of netting twine (30) simultaneously rapidly disappears and gets back to tranquility very soon.

In sum, the three and nine clock shock damper structure of racket of the present utility model, frame is clapped and is provided with recessed space in inboard periphery both sides central authorities and makes the perforation downside be embedded with elastomer block, make the vibration of square stance netting twine be subjected to elastomer block and stop also absorbing vibration kinetic energy, frame is clapped the function with shock-absorbing and the netting twine vibration is reduced fast.

Claims

1, a kind of three and nine clock shock damper structure of racket, comprise racquet frame, it extends a frame by an end of racket shank and is constituted, the frame side face is provided with perforation, have netting twine to pass in the perforation and according to the footpath, latitude direction weaving becomes mesh, it is characterized in that, the inboard periphery of frame is provided with supporting seat, and it is poor in the perforation downside section of being formed with, supporting seat is positioned at frame both sides middle position, and wherein is provided with groove, and fit is fixed with elastomer block in the groove, the contiguous perforation of elastomer block end face lower edge is formed with the face of compressing, and netting twine passes perforation and leans the face that compresses of elastomer block.