Patent Publication Number: US-10760873-B2

Title: Gear-type air rifle slide stop structure

Description:
BACKGROUND 
     Technical Field 
     The present invention relates to the field of air rifles, and particularly to a gear-type air rifle gear cock structure. 
     Background 
     The existing air rifles, utilizing a spring as power, require a linkage mechanism in operation to drive an air chamber inside the gun to compress the power spring, and to realize gear cock operation. For this type of guns, a relatively great force should be applied in a gear cock process, so that the gear cock of the gun can be realized, and for powerful guns, their gear cock process demands greater efforts. Moreover, in the gear cock process, the linkage mechanism cannot perform safety lock, that is, in the process of compressing the spring, if a shooter&#39;s hand is slipped from a pulling rod, the pulling rod will rebound, causing the gear cock action to hurt said shooter easily. It is quite necessary to design an air rifle gear cock structure which requires a relatively light force for the gear cock and has a safe gear cock process. 
     SUMMARY 
     One object of the present disclosure is to provide a gear-type air rifle gear cock structure to solve the problems referred in the Background. 
     The above technical object of the present disclosure is realized through the following technical solution. 
     A gear-type air rifle gear cock structure, including: an air cylinder, a gear cock controller, a rack, and a rack reset spring, the gear cock controller is fixedly connected with the air cylinder, and the rack is arranged between the air cylinder and the gear cock controller; 
     The air cylinder includes a air cylinder body, a piston, and a magazine, the air cylinder body has a hollow structure with an air chamber inside, the piston is arranged in the air chamber inside the air cylinder body, the magazine communicates with the air chamber through an outlet pipe; 
     Two ends of the rack are a piston fixing end and a spring fixing end respectively, the piston fixing end is connected with the piston through a lug arranged at the piston fixing end, the spring fixing end is connected with the rack reset spring, two ends of the rack reset spring are respectively fixed on the rack and the air cylinder. 
     Preferably, the gear cock controller includes a housing, a rocking bar, a rocking bar gear, a button, and a double-layer gear, the housing is provided with several insertion holes, so that rotating shafts of the rocking bar gear and the double-layer gear are fixed in the insertion holes, the double-layer gear is fixed in an axial direction of the insertion hole, the rocking bar gear is not fixed in the axial direction of the insertion hole, two ends of the rotating shaft of the rocking bar gear are connected with the button and the rocking bar respectively; the rocking bar and the button are arranged outside the housing; the double-layer gear includes a first gear and a second gear which are coaxially stacked with each other, a distance between axle centers of the first gear and the rocking bar gear is equal to a sum of nominal radii of the two, and the second gear is engaged with the rack. 
     In the present solution, through the gear rack mechanism, an conventional linkage is for gear cocking is replaced with a transmission mode of driving the rocking bar gear and the double-layer gear by the rocking bar, the force of the user to gear cock is greatly reduced, and the risk from the gear cock is decreased. By switching the gear cock and the standby state through the button, the performance of the gun is further improved. 
     Preferably, the housing includes a fixed shell and a protecting shell, the protecting shell is fixedly connected with the air cylinder through the fixed shell. 
     Preferably, the housing is internally provided with an anti-reverse paddle, the anti-reverse paddle includes a limit section, a hinge section, and a driving lever section, the anti-reverse paddle is hinge-fixed in the housing through the hinge section, and has a function of rotating with the hinge section as an axle center, the driving lever section extends out from the housing, and the limit section is provided with a top head for positioning the rocking bar gear. 
     By arranging the anti-reverse paddle, the rack will not rebound in the process of gear cocking, therefor the safety is improved, moreover, the distance of gear cocking can be controlled arbitrarily, improving the playability of the gun. 
     Preferably, one end of the driving lever section located in the housing is provided with a spring seat, the spring seat is abutted against a paddle spring, and the paddle spring is fixed in the housing. 
     Preferably, the rotating shaft of the rocking bar gear is provided with a ratchet for cooperation with the anti-reverse paddle. 
     Preferably, the ratchet is in sliding connection with the air cylinder. 
     Preferably, the rack is in sliding connection with the gear cock controller. 
     Preferably, the rack is in sliding connection with the gear cock controller through a slide groove provided on the fixed shell. 
     Preferably, the housing is provided with a limit platform for serving a limit function to the anti-reverse paddle. 
     To sum up, the beneficial effects of the present disclosure lie in: 
     (1) The gear-type air rifle gear cock structure of the present disclosure, using the gear rack mechanism in place of the conventional linkage compression bar mechanism, solves the problem that spring gun gear cock is too heavy, and meanwhile has the anti-backward function in the gear cock process, i.e. at any position in the gear cock process, the position of the rack can be locked through the anti-reverse rotary paddle, preventing the rack from rebounding. 
     (2) The gear-type air rifle gear cock structure of the present disclosure facilitates modifications to the air rifles with the conventional linkage mechanism, and for the modifications, all it needs is to detach the original linkage mechanism, and install the gear cock controller, the rack, and the rack reset spring. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a structural schematic diagram of the present disclosure; 
         FIG. 2  is a structural schematic diagram of a gear cock controller in the present disclosure; 
         FIG. 3  is a use schematic diagram of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS 
     The following specific embodiments are merely for illustrating the present disclosure, rather than limiting the present disclosure. A person skilled in the art, upon reading the present description, can make modifications, without inventive contribution, to the present embodiments as required, and the modifications are protected by the Patent Law as long as they are within the scope of the claims of the present disclosure. 
     Below the present disclosure is described in detail with embodiments in combination with the accompanying drawing. 
     Embodiment 1 
     According to  FIG. 1  to  FIG. 3 , a gear-type air rifle gear cock structure includes: a air cylinder  1 , a gear cock controller  2 , a rack  3 , and a rack reset spring  4 , the gear cock controller  2  is fixedly connected with the air cylinder  1 , and the rack  3  is arranged between the air cylinder  1  and the gear cock controller  2 ; 
     The air cylinder  1  includes a air cylinder body  10 , a piston  11 , and a magazine  12 . The air cylinder body  10  has a hollow structure with an air chamber  101  inside. The piston  11  is arranged in the air chamber  101  inside the air cylinder body  10 . The magazine  12  communicates with the air chamber  101  through an outlet pipe  121 ; 
     Two ends of the rack  3  are a piston fixing end  31  and a spring fixing end  32  respectively. The piston fixing end  31  is connected with the piston  11  through a lug arranged at the piston fixing end  31 . The spring fixing end  32  is connected with the rack reset spring  4 . Two ends of the rack reset spring  4  are respectively fixed on the rack  3  and the air cylinder  1 . 
     According to  FIG. 1  and  FIG. 2 , the gear cock controller  2  includes a housing  21 , a rocking bar  22 , a rocking bar gear  23 , a button  24 , and a double-layer gear  25 . The housing  21  is provided with several insertion holes, so that rotating shafts of the rocking bar gear  23  and the double-layer gear  25  are fixed in the insertion holes. The double-layer gear  25  is fixed in an axial direction of the insertion hole, while the rocking bar gear  23  is not fixed in the axial direction of the insertion hole. Two ends of the rotating shaft of the rocking bar gear  23  are connected with the button  24  and the rocking bar  22  respectively. The rocking bar  22  and the button  24  are arranged outside the housing  21 ; the double-layer gear  25  includes a first gear  251  and a second gear  252  which are coaxially stacked with each other. A distance between axle centers of the first gear  251  and the rocking bar gear  23  is equal to a sum of nominal radii of the two, and the second gear  252  is engaged with the rack  3 . 
     The housing  21  is internally provided with an anti-reverse paddle  26 . The anti-reverse paddle  26  includes a limit section  261 , a hinge section  262 , and a driving lever section  263 . The anti-reverse paddle  26  is hinge-fixed in the housing  21  through the hinge section  262 , and has the function of rotating with the hinge section  262  as an axle center. The driving lever section  263  extends out from the housing  21 . The limit section  261  is provided with a top head  2611  for positioning the rocking bar gear  23 . One end of the driving lever section  263  located in the housing  21  is provided with a spring seat  2631 . The spring seat  2631  is abutted against a paddle spring  27 . The paddle spring  27  is fixed in the housing  21 . The rotating shaft of the rocking bar gear  23  is provided with a ratchet for cooperation with the anti-reverse paddle  26 . The ratchet is arranged to be concentrically fixed with the rocking bar gear  23 . The housing  21  is provided with a limit platform  28  for serving a limit function to the anti-reverse paddle  26 . 
     The housing  21  includes a fixed shell  211  and a protecting shell  212 . The protecting shell  212  is fixedly connected with the air cylinder  1  through the fixed shell  211 . The rack  3  is in sliding connection with the gear cock controller  2  through a slide groove provided on the fixed shell  211 . 
     According to  FIG. 3 , the present mechanism is defined into a gear cock use state and a standby use state, and the two states can be switched through the button  24 . When in the gear cock use state, the rocking bar gear  23  is engaged with the first gear  251 , and the rocking bar gear  23  is driven by rotating the rocking bar  22  to drive the double-layer gear  25 , so that the second gear  252  drives the rack  3  to slide, and the rack  3 , while sliding, drives the piston  11  to move which completes the gear cock operation. During the gear cock operation, the anti-reverse paddle  26  is abutted against the ratchet through the top head  2611  under the effect of the paddle spring  27 , realizing the unidirectional rotation of the rocking bar gear  23 , so that it is ensured that the rack  3  will not rebound. When the gear cock is not needed, the button  24  is toggled, so that the rocking gear  23  is no longer engaged with the first gear  251 . The driving lever section  263  of the anti-reverse paddle  26  is toggled, the top head  2611  is released, and the rack  3  is reset by the rack reset spring  4 . 
     Embodiment 2 
     Different from the above embodiment 1, the rack  3  is in sliding connection with the air cylinder  1 .