Patent Publication Number: US-9404703-B2

Title: Bullet feeding and positioning device for toy gun

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a feeding and positioning device for toy gun, and especially relates to a feeding and positioning device for BB gun. 
     2. Description of Related Art 
     Normally, the cone-shaped bullet is using the peeling of the spiral rifling while shooting to rotate by its own longitudinal axis after firing. The surface of the bullet is slantwise pressed to decrease the air resistance and further to improve the range of firing and hit rate. 
     However, there is no spiral rifling in the BB gun (toy gun). Please refer to  FIG. 1 , BB bullet  95  may only use the friction member  93  arranged inside the bore  92  to produce friction by pressing unidirectional. The BB bullet  95  may be rotated by its own longitudinal axis and the friction member  93  may be used for first positioning before shooting. The pressure outputted from the firing system may push the BB bullet  95  to prevent the air resistance and improve the range of firing after shooting. 
     But the friction member  93  arranged inside the barrel  91  of the BB gun (toy gun) is unidirectionally blocking the BB bullet  95  and the BB bullet  95  is contacted with an inner peripheral of the bore  92  with one point. Therefore, the error is easily produced while the bullet  95  is pushed by the nozzle  94  to be positioned before shooting, and the error of the positioning point of the BB bullet  95  is easier produced. It is hard to ensure that the BB bullet  95  may be pushed by instant high pressure in every firing. And the friction member  93  may not relatively effectively press BB bullet  95  slantwise. The BB bullet  95  may be shifted after firing and the rotation may be relatively decreased. The range of firing may be decreased. And the potential energy may be further decreased due to the decreasing of speed. The hit rate may be also influenced. 
     In view of the foregoing circumstances, the inventor has invested a lot of time to study the relevant knowledge, compare the pros and cons, research and develop related products. After quite many experiments and tests, the “feeding and positioning device for toy gun” of this invention is eventually launched to improve the foregoing shortcomings, to meet the public use. 
     SUMMARY OF THE INVENTION 
     An object of this invention is providing a feeding and positioning device for toy gun to improve the drawbacks of the prior art. The bullet is aligned by the groove sides respectively arranged at two sides of the guiding groove with circular cone shape and then cooperated with the friction portion to form three-point guiding position to downwardly press the bullet to be precisely fed. It may prevent the bullet from skewed error and improve the range of firing, effective potential energy, and hit rate. 
     In order to improve above mentioned drawbacks, a feeding and positioning device for toy gun is provided. The feeding and positioning device for toy gun may comprise: a barrel, having a bore, a convex hole, and a guiding groove, two ends of the bore are communicated with each other and for guiding a bullet, the convex hole is arranged at a first end of an outer surface of the barrel and communicated with the bore, the guiding groove is convexly arranged at a bottom surface of the bore and axially extended, two groove sides are formed at two sides of the guiding groove, a width and a depth of the guiding groove are gradually decreased from the first end of the barrel inwardly so that the bullet is aligned by the groove sides of the guiding groove; and a friction cylinder, having a hollow and elastic cylinder body and a friction portion, the cylinder body is covered at the first end of the barrel, the friction portion is arranged inside the cylinder portion and inserted into the convex hole of the barrel inwardly so that the friction portion is controlled to press the bullet slantwise. 
     In some embodiments, a cross section of the guiding groove is arc shape. 
     In some embodiments, a positioning protrusion portion is arranged between an inner portion of the friction cylinder adjacent to the first end of the barrel and the friction portion, and the positioning protrusion portion is inserted into the convex hole and the bore inwardly so as to press the bullet downwardly. 
     In some embodiments, two sides of the positioning protrusion portion of the friction cylinder are convex. 
     In some embodiments, two embedding grooves are respectively arranged at an outer surface of two sides of the first end of the barrel and axially extended, and a plurality of embedding strings is arranged inside the friction cylinder and corresponding to each embedding groove. 
     In some embodiments, a radial ring groove is arranged at one end of each embedding groove opposite to the first end of the barrel, and an inner convex ring is arranged at the friction cylinder and corresponding to the radial ring groove. 
     The various objectives and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a conventional BB toy gun while feeding a bullet; 
         FIG. 2  is a structure diagram of a feeding and positioning device for toy gun of the present invention; 
         FIG. 3  is a perspective view of the feeding and positioning device for toy gun of the present invention; 
         FIG. 4  is an exploded view of the feeding and positioning device for toy gun of the present invention; 
         FIG. 5  is a cross-sectional view of  FIG. 2  along line A-A; 
         FIG. 6  is a cross-sectional view of  FIG. 2  along line B-B; 
         FIG. 7  is a schematic diagram of  FIG. 2  while feeding a bullet; 
         FIG. 8  is a schematic diagram of the feeding and positioning device for toy gun of the present invention while firing after feeding of  FIG. 7 ; 
         FIG. 9  is a structure diagram of another embodiment of the feeding and positioning device for toy gun of the present invention; and 
         FIG. 10  is a cross-sectional view of  FIG. 9  along line C-C. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     To describe clearly that the present invention achieves the foregoing objective and function, the technical features and desired function are described with reference to a preferred embodiment and accompanying drawings. 
     Please reference to  FIGS. 2 to 7 , a feeding and positioning device for toy gun of the present invention mainly comprises a barrel  1  and a friction cylinder  2  so that a nozzle  3  may push bullets  4  (such as BB bullets) to be feed (shown as in  FIG. 7 ) and then to be fired. 
     The barrel  1  may have a bore  11 , a convex hole  12 , and a guiding groove  13 . Two ends of the bore  11  may be communicated with each other and for guiding a bullet  4 . The convex hole  12  may be arranged at a first end of an outer surface of the barrel  1  and communicated with the bore  12 . The guiding groove  13  with a circular cone shape may be convexly arranged at a bottom surface of the bore  11  and axially extended. Please refer to  FIGS. 2, 5, and 7 , two groove sides  15  may be formed at two sides of the guiding groove  13 . A width and a depth of the guiding groove  13  are gradually decreased from the first end of the barrel  1  inwardly and a cross section of the guiding groove  13  is arc shape so that the bullet  4  is aligned by the groove sides  15  of the guiding groove  13 . Two embedding grooves  14  may be respectively arranged at an outer surface of two sides of the first end of the barrel  1  and axially extended, and a radial ring groove  16  may be arranged at one end of each embedding groove  14  opposite to the first end of the barrel  1 . 
     The friction cylinder  2  may have a hollow and elastic cylinder body  21  and a friction portion  22 . The cylinder body  21  may be covered at the first end of the barrel  1 . The friction portion  22  may be arranged inside the cylinder portion  21  and inserted into the convex hole  12  of the barrel  1  inwardly and a plurality of embedding strings  24  may be arranged inside the friction cylinder  2  and corresponding to each embedding groove  14 . An inner convex ring  26  may be arranged at the friction cylinder  2  and corresponding to the radial ring groove  16 . A positioning protrusion portion  23  may be arranged between an inner portion of the friction cylinder  2  adjacent to the first end of the barrel  1  and the friction portion  22  so that the positioning protrusion portion  23  is inserted into the convex hole  12  and the bore  11  inwardly and then downwardly press a rear section of the bullet  4  adjacent to the first end of the barrel  1  and the friction portion  23  is controlled to slantwise press a front section of the bullet  4  opposite to the rear section. 
     Therefore, reference to  FIG. 7 , the bullet  4  is pushed into the bore  11  by the nozzle  3  and downwardly pressed by the friction portion  22  of the friction cylinder  2  and the positioning protrusion portion  23  so that the positioning protrusion portion  22  is inserted into the convex hole  12  and the bore  11  inwardly and then downwardly press a rear section of the bullet  4  adjacent to the first end of the barrel  1  and the friction portion  22  is controlled to slantwise press a front section of the bullet  4  opposite to the rear section. The bullet  4  may be precisely feeding with three-point guiding position to prevent the bullet  4  from skewed error, increase the rotation speed by its own axis (shown as in  FIG. 8 ), and improve the range of firing, effective potential energy, and hit rate. 
     Please refer to  FIGS. 9 and 10 , another embodiment of the feeding and positioning device may also comprise a barrel  1  and another friction cylinder  2 ′ may have a hollow and elastic cylinder body  21 ′ and a friction portion  22 ′. The cylinder body  21 ′ may be covered at the first end of the barrel  1 . The friction portion  22 ′ may be arranged inside the cylinder portion  21  and inserted into the convex hole  12  of the barrel  1  inwardly and a plurality of embedding strings  24 ′ may be arranged inside the friction cylinder  2  and corresponding to each embedding groove  14 . A positioning protrusion portion  23 ′ may be arranged between an inner portion of the friction cylinder  2  adjacent to the first end of the barrel  1  and the friction portion  22  so that the positioning protrusion portion  23 ′ is inserted into the convex hole  12  and the bore  11  inwardly and two sides of the positioning protrusion portion  23 ′ of the friction cylinder  2 ′ are convex. 
     The foregoing descriptions are merely the exemplified embodiments of the present invention, where the scope of the claim of the present invention is not intended to be limited by the embodiments. Any equivalent embodiments or modifications without departing from the spirit and scope of the present invention are therefore intended to be embraced. 
     The disclosed structure of the invention has not appeared in the prior art and features efficacy better than the prior structure which is construed to be a novel and creative invention, thereby filing the present application herein subject to the patent law.