CN112945009A

CN112945009A - Hand protector connecting structure of firearm

Info

Publication number: CN112945009A
Application number: CN202110426565.6A
Authority: CN
Inventors: 叶吾; 周峰; 艾川; 刘东锋; 刘科言; 范芳梅; 秦函
Original assignee: Chongqing Jianshe Industry Group Co Ltd
Current assignee: Chongqing Jianshe Industry Group Co Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-06-11
Anticipated expiration: 2041-04-20
Also published as: CN112945009B

Abstract

The invention discloses a hand guard connecting structure of a firearm, which has the advantages of simple structure, convenience in processing, quickness in disassembly and assembly, firmness in connection, reliability in positioning and good part assembly consistency. The utility model provides a hand protector section of thick bamboo connection structure of firearms, includes hand protector section of thick bamboo, lower case body, the polygon is personally submitted to hand protector section of thick bamboo transversal, is equipped with the rectangular channel on each face of hand protector section of thick bamboo respectively, still includes the connecting plate, the connecting plate is located the hand protector section of thick bamboo, and the lower surface of connecting plate is equipped with the boss, and the rectangular channel on boss and the hand protector section of thick bamboo bottom surface corresponds, and each boss joint is fixed in the rectangular channel that corresponds, is equipped with normal direction last screw hole on each boss respectively, it is equipped with down the screw hole to correspond on the case body down, and lower case body passes through screw, screw hole fixed connection with each boss, forms the fixed connection of hand protector.

Description

Hand protector connecting structure of firearm

Technical Field

The invention relates to the technical field of firearms, in particular to a hand guard connecting structure of a firearm.

Background

In the prior art, the hand guard cylinder and the lower case body are mainly and widely connected through screws, but the hand guard cylinder and the lower case body are made of aluminum alloy materials, so that the hand guard cylinder and the lower case body are directly connected through screws and are easy to loosen in the using process, and in order to be firmly connected, a steel wire thread sleeve must be installed on the hand guard cylinder, so that the installation thickness of the hand guard cylinder can be increased, and the complexity and the processing difficulty of the processing technology of the hand guard cylinder can be increased due to the special structural characteristics of the hand guard cylinder.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a hand protector connecting structure of a firearm, which has the advantages of simple structure, convenience in processing, quickness in disassembly and assembly, firmness in connection, reliability in positioning and good part assembly consistency.

The purpose of the invention is realized as follows:

the utility model provides a hand protector section of thick bamboo connection structure of firearms, includes hand protector section of thick bamboo, lower case body, the polygon is personally submitted to hand protector section of thick bamboo transversal, is equipped with the rectangular channel on each face of hand protector section of thick bamboo respectively, still includes the connecting plate, the connecting plate is located the hand protector section of thick bamboo, and the lower surface of connecting plate is equipped with the boss, and the rectangular channel on boss and the hand protector section of thick bamboo bottom surface corresponds, and each boss joint is fixed in the rectangular channel that corresponds, is equipped with normal direction last screw hole on each boss respectively, it is equipped with down the screw hole to correspond on the case body down, and lower case body passes through screw, screw hole fixed connection with each boss, forms the fixed connection of hand protector.

Preferably, the hand protecting sleeve and the lower case body are made of aluminum alloy materials, and the connecting plate is made of 30Cr steel materials.

Preferably, one rectangular slot corresponds to two bosses.

By adopting the technical scheme, the hand protector is firmly connected with the lower casing, is simple and quick to mount and dismount, is reliable in front-back, up-down and left-right positioning, can ensure the mounting consistency of the hand protector and the lower casing, and can reduce the thickness of a connected piece.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a schematic structural view of a connecting plate;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a schematic sectional view A-A of FIG. 1.

Reference numerals

In the attached drawings, 1-hand guard; 2-a rectangular groove; 3-connecting the plates; 4-lower case body; 5-a screw; 6-gasket.

Detailed Description

Referring to fig. 1-5, an embodiment of hand protector connection structure of firearms includes hand protector 1, lower casing 4, hand protector, lower casing are aluminum alloy material, the transversal polygon of hand protector, be equipped with rectangular channel 2 on each side of hand protector respectively, still includes connecting plate 3, the connecting plate is located the hand protector, and the lower surface of connecting plate is equipped with the boss, the connecting plate (even the boss together) adopts 30Cr steel material to make. The hardness of the steel material is high, the steel material is directly tapped on the steel material for connection, and the hardness of the aluminum material is low, so that the direct tapping is easy to loosen. The boss corresponds with the rectangular channel on the hand protector bottom surface, and each boss joint is fixed in the rectangular channel that corresponds, and in this embodiment, a rectangular channel corresponds two bosss, and two bosss imbed a rectangular channel, form the location in the plane. And the bosses are respectively provided with a normal upper screw hole, the lower case body is provided with a lower screw hole corresponding to the upper screw hole, and the lower case body is fixedly connected with the bosses through screws 5 and screw holes to form the fixed connection of the hand protecting sleeve and the lower case body.

The hand protector is fixed on the lower case body, and in the shooting process, the gun barrel vibrates and does not interfere with the hand protector completely, so that the hand protector can be further prevented from loosening.

In the embodiment, a T-shaped connecting plate is designed according to a rectangular groove with a hexagonal cross section on the lower plane of the hand guard barrel. The connecting plate is made of 30Cr steel, the length of the connecting plate is 76 mm, the width of the connecting plate is 12 mm, the total thickness of the connecting plate is 6.8 mm, and the thickness of the upper plane is 2 mm; 4 bosses with the length of 11.9 mm and the width of 7 mm are designed at intervals below, and 4M 5 screw holes with the depth of 6.8 mm are drilled on the bosses. During installation, the T-shaped connecting plate is installed in the rectangular groove on the hand protecting sleeve, the installation surface of the T-shaped connecting plate is attached to the installation surface of the hand protecting sleeve, and then the T-shaped connecting plate is positioned left and right in the front and back directions through the upper boss plane of the T-shaped connecting plate and the hand protecting sleeve. After the connecting plate and the hand protecting sleeve are installed, the lower case body which is pre-assembled with screw holes is connected through 4M 5 screws.

In actual work, the T-shaped connecting plate 3 is firstly installed in the rectangular groove 2 on the hand guard 1, and then the lower machine box body 4 with the pre-drilled through hole is connected through 4M 5 bolts 5 and a phi 5 washer 6. The connecting mechanism is firm and reliable in connection, greatly simplifies the processing technology of the hand guard, ensures the assembly consistency of the hand guard and the case body, and ensures the assembly parallelism of the hand guard.

The hand guard sleeve has the characteristics of simple structure, convenience in disassembly and assembly, simplicity in processing, firmness in connection and the like, and is widely suitable for connection of hand guard sleeves and lower case bodies of various firearms.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a hand protector connection structure of firearms, includes hand protector, lower casing body, the transversal polygon of personally submitting of hand protector is equipped with rectangular channel, its characterized in that on each face of hand protector respectively: still include the connecting plate, the connecting plate is located the hand protector, and the lower surface of connecting plate is equipped with the boss, and the boss corresponds with the rectangular channel on the hand protector bottom surface, and each boss joint is fixed in the rectangular channel that corresponds, is equipped with normal direction on each boss respectively screw hole, it is equipped with down the screw hole to correspond screw hole on the lower casing body, and lower casing body passes through screw, screw hole fixed connection with each boss, forms the fixed connection of hand protector, lower casing body.

2. The hand protector connection structure of a firearm as set forth in claim 1, wherein: the hand guard sleeve and the lower case body are made of aluminum alloy materials, and the connecting plate is made of 30Cr steel materials.

3. The hand protector connection structure of a firearm as set forth in claim 1, wherein: one rectangular groove corresponds to two bosses.