CN201643650U - Locating ring for training to aim at billiard ball by eye measurement - Google Patents

Abstract

The utility model belongs to equipment for physical exercise and particularly relates to a locating ring for training to aim at a billiard ball by eye measurement. A ring-shaped ball holder is arranged at the bottom of the locating ring; an aiming ring is arranged right above the ring-shaped ball holder; and the aiming ring and the ring-shaped ball holder is connected by an L-shaped connecting rod. The locating ring of the utility model has the advantages of simple structure, obvious effect and convenient implementation, enables a user to take the practice on an ordinary billiard table instead of additional training areas and prevents the billiard table from being damaged or contaminated.

Description

Centring ring is aiminged drill in a kind of billiard ball range estimation

Technical field

The utility model relates to a kind of billiard ball range estimation and aimings drill centring ring, belongs to a kind of sports movement apparatus.

Background technology

A lot of billiards loverses, under object ball and the fixed situation of target sack, can't determine accurately which some position of ball directive (is set forth for clear, this point of name temporarily is " point of vertical "), even long-term exercise also misses the main points, reason is very simple, this point is not attached on the sphere, but " suspension " (do not have any mark, the distance that a radius is arranged from two ball contact points), what we will train is exactly to this space imagining ability without any the point of vertical of mark, a kind of invention is once arranged by practising with the white powder marking on the table, can't cultivate this visionary, because ball is three-dimensional, and the white mark on the desktop with the centre of sphere not on same horizontal plane, in case break away from mark, still can't improve accuracy.

And in fact, we are at square stance, no matter which direction to clash into object ball from, perhaps object ball is hit which direction, the mother bulb centre of sphere is (the two ball contact point) that does not reach the point of impingement, to decorate just in time be the distance of the radius of a ball from bumping, that is to say no matter mother bulb from which direction is penetrated, be contained on which point, it is the center of circle that the mother bulb centre of sphere all drops on the target centre of sphere, equals the radius of ball with desktop distance.According to above-mentioned principle, when we bat aiming at every turn, all should on this virtual annulus, seek aiming point according to the direction of target sack, the target sack and the object ball centre of sphere are drawn a straight line, aiming point is exactly the crosspoint of this straight line and this circle.When we train, just cultivate imagination to this circle.

Summary of the invention

The purpose of this utility model is to provide a kind of billiard ball range estimation to aiming drill centring ring, and the circle that this is virtual presents with the form of material object, practises pointless defective thereby solve the beginner.

To achieve these goals, the utility model by the following technical solutions: the bottom of this device is the holder of circular ring type ball, and directly over the holder of circular ring type ball, aiming is connected by " L " type connecting rod with between annulus and the holder of circular ring type ball with annulus in aiming.

Circular ring type ball holder internal diameter=2 (Rr) wherein ^1/2-r, R=radius of sphericity, r=aiming annular radii.Its purpose concedes points when being fixed in the ball holder exactly, also contacts desktop simultaneously, not by bed hedgehopping.

The utility model compared with prior art has following advantage:

The utility model is simple in structure, effect is obvious, enforcement is convenient, do not need to establish in addition the training court, just can practise on common ball table, does not damage and pollutes Billiards table.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Schematic diagram when Fig. 2 uses for the utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing 1, Fig. 2: centring ring is aiminged drill in a kind of billiard ball range estimation, the bottom of this device is circular ring type ball holder 1, directly over circular ring type ball holder 1, aiming is connected by " L " type connecting rod 2 with between annulus 3 and the circular ring type ball holder 1 with annulus 3 in aiming.

During exercise, object ball 4 is positioned on the circular ring type ball holder 1, the practitioner is according to the mother bulb position, determine aiming point with the range estimation way, concrete way is, one of the imagination is passed the straight line of the object ball centre of sphere from sack 5 earlier, and the crosspoint of straight line in this imagination and annulus, be exactly aiming point, only need this aiming point is done the simulation shot.

Claims (1)

1. centring ring is aiminged drill in a billiard ball range estimation, it is characterized in that: the bottom of this device is circular ring type ball holder (1), the aiming with annulus (3) directly over circular ring type ball holder (1), the aiming with annulus (3) with circular ring type ball holder (1) between be connected by " L " type connecting rod (2).

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