Sniper rifle body and lower cartridge receiver connecting structure
By using V-shaped slots, boss limits and tightening connection methods in the connection structure of the gun body and lower receiver of the sniper rifle, the problem of insufficient accuracy and firmness of the connection structure in the prior art is solved, and a high-precision and firm connection structure is realized, which is easy to use and maintain.
Patent Information
- Application Number
- CN202421731929.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The connection structure of the existing sniper rifle's gun body and lower receiver is insufficient in installation accuracy and connection firmness, which affects the shooting accuracy and difficulty of use and maintenance.
The V-shaped slot, boss limiting and tightening connection method is adopted. Through the embedded cooperation between the front and rear V-shaped surfaces of the gun body and the V-shaped surface of the lower receiver, combined with the fixing method of the limiting boss and screws, the reliable and accurate connection between the gun body and the lower receiver is achieved.
It realizes the effect of automatic centering, good direction, accurate positioning and reliable connection, which is easy to decompose and combine, can withstand large recoil forces, simplify the number of parts, and improves the convenience of connection.
Smart Images
Figure CN222799803U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of firearms, in particular to a connection structure between a gun body and a lower receiver of a sniper rifle. Background Art
[0002] The sniper rifle is a powerful weapon for high-precision, long-range sniping of living targets. The gun body and lower receiver are the core components of the sniper rifle. The installation accuracy and connection firmness affect the shooting accuracy, and the convenience of disassembly and assembly is related to the difficulty of use and maintenance. Utility Model Content
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a connection structure between a gun body and a lower receiver of a sniper rifle, so that the two core components of the gun body and the lower receiver can be connected reliably and accurately.
[0004] The purpose of the utility model is achieved in this way:
[0005] A sniper rifle gun body and lower receiver connection structure, comprising a gun body and a lower receiver, wherein a gun body front V-shaped surface is provided at the bottom of the front end of the gun body, a gun body rear V-shaped surface is provided at the bottom of the rear end of the gun body, a lower receiver front V-shaped surface is provided at the upper part of the front end of the lower receiver, a lower receiver rear V-shaped surface is provided at the upper part of the rear end of the lower receiver, the lower receiver front V-shaped surface is embedded in the gun body front V-shaped surface for matching positioning, and the lower receiver rear V-shaped surface is embedded in the gun body rear V-shaped surface for matching positioning, thereby forming a horizontal positioning and a vertical positioning of the gun body;
[0006] A limiting boss extending downward is arranged at the bottom of the front end of the gun body, the rear end face of the limiting boss is the force-bearing surface of the gun body, a groove is arranged at the upper part of the front end of the lower receiver, the rear groove wall of the groove is the force-bearing surface of the groove of the lower receiver, and the limiting boss on the gun body is inserted into the groove on the lower receiver for matching positioning;
[0007] A front threaded hole of the gun body is vertically provided on the upper edge of the limiting boss, a front screw through hole of the lower receiver is provided at the bottom of the groove on the lower receiver, a rear threaded hole of the gun body is obliquely provided along the lower rear edge of the bottom rear end of the gun body, a rear screw through hole of the gun body is provided on the upper rear end of the lower receiver corresponding to the rear threaded hole of the gun body, and also includes two screws, one screw passes through the front screw through hole of the lower receiver and is fixed to the front threaded hole of the gun body, and the other screw passes through the rear screw through hole of the lower receiver and is fixed to the rear threaded hole of the gun body. The two screws fix the gun body and the lower receiver and make the force-bearing surface of the gun body contact with the force-bearing surface of the groove of the lower receiver.
[0008] Preferably, both screws are covered with flat washers and elastic washers.
[0009] Preferably, the front V-shaped surface of the gun body is larger than the rear V-shaped surface of the gun body.
[0010] Preferably, the threaded hole at the rear of the gun body forms an angle of 0° to 45° with the vertical direction.
[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:
[0012] This technical solution adopts a V-shaped groove, boss limit, and tensioning connection method, which has the advantages of automatic centering, good directivity, accurate positioning, reliable connection, and easy disassembly and combination. This connection method does not require the addition of additional parts to complete a reliable and accurate connection of the two core parts of the sniper rifle body and lower receiver. It can withstand the larger recoil of the sniper rifle and is easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the present invention in an assembled state;
[0014] Figure 2 It is a structural schematic diagram of the gun body of the present invention;
[0015] Figure 3 yes Figure 2 Left view of;
[0016] Figure 4 It is a schematic diagram of the structure of the lower casing of the present invention;
[0017] Figure 5 yes Figure 4 AA section view;
[0018] Figure 6 yes Figure 4 BB cross-sectional view.
[0019] Reference numerals
[0020] In the accompanying drawings, 1 is a gun body, 101 is a threaded hole at the rear of the gun body, 102 is a force-bearing surface of the gun body, 103 is a threaded hole at the front of the gun body, 104 is a V-shaped surface at the front of the gun body, and 105 is a V-shaped surface at the rear of the gun body; 2 is a lower receiver, 201 is a screw through hole at the rear of the lower receiver, 202 is a screw through hole at the front of the lower receiver, 203 is a force-bearing surface of the groove of the lower receiver, 204 is a V-shaped surface at the rear of the lower receiver, 205 is a V-shaped surface at the front of the lower receiver, 3 is a flat washer, 4 is a screw, and 5 is an elastic washer. DETAILED DESCRIPTION
[0021] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.
[0022] See also Figure 1-Figure 6 , an implementation case of a connection structure between a sniper rifle body and a lower receiver.
[0023] The present invention comprises a gun body 1 and a lower receiver 2. A front V-shaped surface 104 is provided at the bottom of the front end of the gun body, a rear V-shaped surface 105 is provided at the bottom of the rear end of the gun body, a front V-shaped surface 205 is provided at the upper part of the front end of the lower receiver, a rear V-shaped surface 204 is provided at the upper part of the rear end of the lower receiver, the front V-shaped surface 205 of the lower receiver is embedded in the front V-shaped surface 104 of the gun body for matching positioning, and the rear V-shaped surface 204 of the lower receiver is embedded in the rear V-shaped surface 105 of the gun body for matching positioning, thereby forming lateral and vertical positioning of the gun body.
[0024] A limiting boss extending downward is provided at the bottom of the front end of the gun body, and the rear end face of the limiting boss is the force bearing surface 102 of the gun body. A groove is provided at the upper front end of the lower receiver, and the rear groove wall of the groove is the force bearing surface 203 of the groove of the lower receiver. The limiting boss on the gun body is inserted into the groove on the lower receiver for matching and positioning. The front and rear limiting of the gun body is achieved through surface contact.
[0025] The upper edge of the limiting boss is vertically provided with a front threaded hole 103 of the gun body, the bottom of the groove on the lower receiver is provided with a front screw through hole 202 of the lower receiver, the rear end bottom of the gun body is obliquely provided with a rear threaded hole 101 of the gun body, the upper portion of the rear end of the lower receiver is provided with a rear screw through hole 201 of the lower receiver corresponding to the rear threaded hole 101 of the gun body, and two screws are also included, one screw 4 passes through the front screw through hole 202 of the lower receiver and is fixed to the front threaded hole 103 of the gun body, and the other screw passes through the rear screw through hole 201 of the lower receiver and is fixed to the rear threaded hole 101 of the gun body, and the two screws fix the gun body 1 and the lower receiver 2, and make the force-bearing surface 102 of the gun body contact with the force-bearing surface 203 of the groove of the lower receiver. Flat washers and elastic washers are sleeved on the two screws.
[0026] Specifically:
[0027] like Figure 2 As shown, a limiting boss is provided at the bottom of the front end of the gun body (the lower part of the front V-shaped inclined surface), and the rear of the limiting boss is the gun body force surface 102. When assembled, the gun body force surface 102 contacts the lower receiver groove force surface 203.
[0028] like Figure 2 As shown, a threaded hole is provided at the bottom of the front and rear ends of the gun body. The front threaded hole 103 of the gun body is provided in the limiting boss and is in a vertical direction; the rear threaded hole 101 of the gun body is inclined at an angle, generally 0° to 45° with the vertical direction.
[0029] like Figure 3 As shown, the front and rear of the gun body are respectively provided with a front V-shaped surface 104 of the gun body and a rear V-shaped surface 105 of the gun body, and the sizes of the two V-shaped surfaces can be adjusted according to the specific structure. In this embodiment, the front V-shaped surface 104 of the gun body is relatively large, and the rear V-shaped surface 105 of the gun body is relatively small.
[0030] like Figure 4As shown, a lower receiver rear screw through hole 201 is provided at the rear of the lower receiver, and the inclination direction and angle of the hole are the same as those of the rear threaded hole 101 of the gun body; a lower receiver groove force-bearing surface 203 is provided at the front of the lower receiver, and the force-bearing surface is in contact with the force-bearing surface 102 of the gun body during assembly; a lower receiver front screw through hole 202 is provided at the groove.
[0031] like Figure 5 As shown, the front and rear of the lower receiver are respectively provided with a lower receiver front V-shaped surface 205 and a lower receiver rear V-shaped surface 204. The lower receiver rear V-shaped surface 204 matches the rear V-shaped surface 105 of the gun body; the lower receiver front V-shaped surface 205 matches the front V-shaped surface 104 of the gun body.
[0032] A method for connecting a bolt-action sniper rifle gun body and a lower receiver:
[0033] Step 1: Place one end of the gun body limiting boss 102 toward one end of the lower receiver limiting boss 203, and place the gun body 1 parallel to the lower receiver 2 from top to bottom, so that the front V-shaped surface 104 of the gun body contacts the front V-shaped surface 205 of the lower receiver, and the rear V-shaped surface 105 of the gun body contacts the front V-shaped surface 204 of the lower receiver;
[0034] Step 2: Push the entire gun body backwards to eliminate the gap and keep the force-bearing surface 102 of the gun body in contact with the force-bearing surface 203 of the lower receiver;
[0035] Step 3: Use a screw, flat washer, and elastic washer combination to pass through the front screw hole 202 of the lower receiver, and screw the screw into the front threaded hole 103 of the gun body, and pre-tighten it first; then use another screw, flat washer, and elastic washer combination to pass through the rear screw hole 201 of the lower receiver, and screw the screw into the rear threaded hole 101 of the gun body, and pre-tighten it as well; then tighten the two screws step by step, front and back, respectively.
[0036] When disassembling, use an Allen wrench to loosen the two front and rear screws respectively, and lift the gun body out of the V-groove of the lower receiver.
[0037] The structure involves a small number of parts and has the advantages of automatic centering, good directivity, accurate positioning, firm connection, and easy disassembly and assembly.
[0038] The structure is simple, and it adopts V-shaped slots, boss limiters, and tensioning connection methods. It has the advantages of automatic centering, good directivity, accurate positioning, firm connection, and easy disassembly and assembly.
[0039] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.
Claims
1. A sniper rifle gun body and lower receiver connection structure, comprising a gun body and a lower receiver, characterized in that: A front V-shaped surface of the gun body is provided at the bottom of the front end of the gun body, a rear V-shaped surface of the gun body is provided at the bottom of the rear end of the gun body, a front V-shaped surface of the lower receiver is provided at the upper part of the front end of the lower receiver, a rear V-shaped surface of the lower receiver is provided at the upper part of the rear end of the lower receiver, the front V-shaped surface of the lower receiver is embedded in the front V-shaped surface of the gun body for matching positioning, and the rear V-shaped surface of the lower receiver is embedded in the rear V-shaped surface of the gun body for matching positioning, so as to form the horizontal positioning and vertical positioning of the gun body; A limiting boss extending downward is arranged at the bottom of the front end of the gun body, the rear end face of the limiting boss is the force-bearing surface of the gun body, a groove is arranged at the upper part of the front end of the lower receiver, the rear groove wall of the groove is the force-bearing surface of the groove of the lower receiver, and the limiting boss on the gun body is inserted into the groove on the lower receiver for matching positioning; A front threaded hole of the gun body is vertically provided on the upper edge of the limiting boss, a front screw through hole of the lower receiver is provided at the bottom of the groove on the lower receiver, a rear threaded hole of the gun body is obliquely provided along the lower rear edge of the bottom rear end of the gun body, a rear screw through hole of the gun body is provided at the upper rear end of the lower receiver corresponding to the rear threaded hole of the gun body, and two screws are also provided, one screw passes through the front screw through hole of the lower receiver and is fixed to the front threaded hole of the gun body, and the other screw passes through the rear screw through hole of the lower receiver and is fixed to the rear threaded hole of the gun body, the two screws fix the gun body and the lower receiver, and make the force-bearing surface of the gun body contact with the force-bearing surface of the groove of the lower receiver.
2. The connection structure between the gun body and the lower receiver of a sniper rifle according to claim 1, characterized in that: The two screws are both covered with flat washers and elastic washers.
3. The connection structure between the gun body and the lower receiver of a sniper rifle according to claim 1, characterized in that: The V-shaped surface at the front of the gun body is larger than the V-shaped surface at the back of the gun body.
4. The connection structure between the gun body and the lower receiver of a sniper rifle according to claim 1, characterized in that: The threaded hole at the rear of the gun body forms an angle of 0° to 45° with the vertical direction.