CN2301698Y - Semi-automatic shotgun locking and unlocking mechanism - Google Patents
Semi-automatic shotgun locking and unlocking mechanism Download PDFInfo
- Publication number
- CN2301698Y CN2301698Y CN 97250969 CN97250969U CN2301698Y CN 2301698 Y CN2301698 Y CN 2301698Y CN 97250969 CN97250969 CN 97250969 CN 97250969 U CN97250969 U CN 97250969U CN 2301698 Y CN2301698 Y CN 2301698Y
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- head
- locking
- supporting surface
- semi
- collision
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Abstract
The utility model relates to a locking and unlocking mechanism for a semi-automatic shotgun, which is composed of a joint sleeve, a machine frame, a machine head, etc. An elastic collision body on a gun body is a spring set having dynamic springs on a left and a right sides respectively, and the joint sleeve is provided with a locking supporting surface corresponding to the machine head, wherein, the supporting surface is a spiral surface having a left spiral right-angle, and the machine head is provided with three convex cogs. The shape of every cog is a part of a circular ring shape, and the supporting surfaces of the convex cogs are all designed into the spiral surfaces having left spiral right-angles. The utility model has the advantages of safety and reliability for locking, success for unlocking and stable movement due to the rotation of the spiral surfaces during unlocking.
Description
The utility model relates to a kind of lock-opening closing mechanism of semi-automatic shotgun.ICL is: F 41 D 3/06.
At present, in the prior art as European patent: EP128125 number, a kind of " automatic machine that is used for straight moving gunlock of having of automatic firearm and revolution locking head is put " disclosed.What this patent proposed is that an inertia spring is between head afterbody and machine frame, automatic principle is: after the percussion, the body of a gun drives head recoil together, and machine frame is owing to inertia lags behind, the distance that it and joint are overlapped between (locking support zone on the body of a gun) shortens, thus compression inertia spring storage power; After finished in the recoil, the inertia spring was upheld, and gave power backward of machine frame, it is moved backward finish automatic circulation.According to its structural analysis, at blocking, there are latch gap in head end face and cartridge case base, be generally 0.3mm～0.4mm, when the inertia spring is compressed suddenly, head meeting front and back play also consumes certain energy, and therefore the effect to the inertia spring is not to collide but the unsettled compression process of basal plane (locating surface is the head breech face).
The purpose of this utility model is just in order to solve weak point of the prior art, and proposed a kind of " a kind of lock-opening closing mechanism of semi-automatic shotgun ".It is to use structure unlike the prior art to realize a kind of automatic principle, has obtained different results.
The purpose of this utility model is achieved in that
The lock-opening closing mechanism of semi-automatic shotgun, form by joint cover, machine frame and head etc., fixing with the elastic collision body on the affixed body of a gun of joint cover for link into an integrated entity with retainer ring, about the spring group of a power spring is respectively arranged, put the locking supporting surface that is provided with the head correspondence at joint, this supporting surface is a left-handed right angle helicoid, head is provided with three double wedges, and the shape of each tooth is the part of annular, and the supporting surface of double wedge all is designed to left-handed right angle helicoid.
The purpose of this utility model can also be further perfect by following steps:
Three double wedges that head is provided with are two big one little.
The utility model has 6 width of cloth accompanying drawings, and wherein Fig. 6 is a most preferred embodiment of the present utility model, also can make the accompanying drawing of specification digest.
Fig. 1, the body of a gun of spring collision body is housed;
The structural representation of Fig. 2, gunlock;
The partial schematic diagram of Fig. 3, gunlock;
Fig. 4, elastic collision body sketch;
Fig. 5, collision schematic diagram;
Fig. 6, structural representation of the present utility model.
The utility model compared with prior art has following advantage: 1, the locking supporting surface is Left-handed right angle helicoid, helical angle guarantee that less than Self-locking angle locking is safe and reliable; When unblanking Helicoid revolution can reduce the frictional resistance that caused by breech pressure on the locking supporting surface, The energy consumption of unblanking significantly reduces, and unblanks smoothly stable action. 2, adopt the recoil collision type certainly Flowing mode has been removed gas directing system or gun barrel Recoil system from, and external form is succinct, attractive in appearance, dimension Protect easy maintenance; The elastic collision collision body has improved elastic restitution coefficient, has guaranteed the automatic machine recoil Speed makes it to finish reliably automatic cycle; The elastic collision collision body is fixed on the body of a gun, the location Determine, fixing also reliable.
Below in conjunction with accompanying drawing most preferred embodiment of the present utility model is described further:
This rifle adopts the automated manner of recoil collision type, utilizes collision to realize the conversion of energy.
The set of data that relates to during two movable body collisions:
M: former movement parts quality is a body of a gun quality for shotgun;
M: accepting the quality of collision movement, is 2 quality of machine frame for shotgun;
Vm: former movement parts (body of a gun) speed at time of impact, the i.e. maximum recoil velocity of the body of a gun;
V: collision back machine frame movement velocity;
B: elastic restitution coefficient;
Q: bullet quality;
ω: propellant powder quality;
β: aftereffect coefficient;
V
0: speed when bullet goes out muzzle;
A position: collision contact site;
V
1: the speed of the former movement parts body of a gun after collision.
According to interior ballistic calculation, the maximum recoil velocity of the body of a gun is:
Vm＝V
0(q+β·ω)/M
As shown in Figure 5, two articles can adopt central collision to transmit energy, is perfectly elastic body if participate in two objects of collision, in-fighting and external drag when not considering to collide, this moment, elastic restitution coefficient was 1, according to the law of conservation of momentum, can draw the speed that obtained by collision object:
V＝M(Vm-V
1)/m
Generally speaking, the object that participates in collision is a metal structure, has elastic-plastic deformation and recovery during collision, is subjected to the influence of elastic restitution coefficient like this by the resultant speed of collision object, at this moment:
V
1＝Vm-Vm(1+b)/(1+M/m?)
V＝Vm(1+b)/(1+m/M)
If a position is the common metal body, the b value is generally about 0.4, be subjected to collision object to obtain bigger speed V in order to make, must improve the numerical value of elastic restitution coefficient b, should change structure, the material at a position, form the collision of the two articles of band middleware, this middleware is called the elastic collision body, the scheme of this shotgun employing that Here it is.Got by test data, the elastic restitution coefficient that adds behind the elastic collision body can reach about 0.7～0.8, and just for after the collision, machine frame obtains more energy advantage is provided for this.But in fact machine frame motion backward after collision is with relative velocity (V-V
1) realizing that it is just extremely important that this moment, shooter supported shoulder, shooter supports shoulder and makes the speed V of the body of a gun
1-directly be reduced to zero, this moment machine frame backward movement velocity (with respect to the body of a gun) be V just, make the energy of machine frame fully obtain utilization, but protected the machine frame recoil and put in place, finish automatic circulation.
Most preferred embodiment of the present utility model is shown in Fig. 6 (constitutional diagram of Fig. 1 and Fig. 2), the lock-opening closing mechanism of semi-automatic shotgun, form by joint cover 1, machine frame 5 and head 6 etc., be fixed on the body of a gun elastic collision body 2 for link into an integrated entity with retainer ring, about the spring group of a power spring is respectively arranged, be provided with the locking supporting surface 4 with head 6 correspondences on joint cover 1, this supporting surface is a left-handed right angle helicoid.As shown in Figure 3, it is two big one little that head 6 is provided with 11, three double wedges of three double wedges 11, and the shape of each tooth is the part of annular, and the supporting surface of double wedge 11 all is designed to left-handed right angle helicoid 10.
After shooter's shooting, the body of a gun 1 in the hand is in the recoil, and the body of a gun 1 makes machine frame produce movement velocity backward by elastic collision body 2 bump machine frames 5 in the process of recoil.Machine frame 5 drives by the helicoid 9 of unblanking and opens and closes 7 revolutions of lock guide pillar, opens and closes lock guide pillar 7 and is fixed together with head 6, and guide pillar 7 drives head 6 revolutions like this, and the locking tooth 10 on the head 6 just is separated from and saves the engagement that puts supporting surface 4, finishes unlocking action.
After unblanking, machine frame 5 continues the recoil together with head 6, and the shell case of dishing out overwhelms hammer, the compression kicker.
Machine frame 5 is just answered into motion forward after putting in place with head 6 recoils under the effect of kicker.When head 6 push one spring into thorax after, head 6 stop motions, this moment machine frame 5 move forward, locking helical face 8 on the machine frame 5 drives guide pillar 7 revolutions, guide pillar 7 drives head 6 revolutions again, makes the locking tooth 10 that enters into locking groove 3 with 4 engagements of locking supporting surface, has realized block action.
Claims (2)
1, a kind of lock-opening closing mechanism of semi-automatic shotgun, by joint cover (1), machine frame (5) and head compositions such as (6), it is characterized in that: fixing is what link into an integrated entity with retainer ring with the elastic collision body (2) on the affixed body of a gun of joint cover (1), about the spring group of a power spring is respectively arranged, on joint cover (1), be provided with the corresponding locking supporting surface (4) of same head (6), this supporting surface is a left-handed right angle helicoid, head (6) is provided with three double wedges (11), the shape of each tooth is the part of annular, and the supporting surface of double wedge (11) all is designed to left-handed right angle helicoid (10).
2, the lock-opening closing mechanism of semi-automatic shotgun according to claim 1 is characterized in that: three double wedges (10) that said head (6) is provided with are two big one little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97250969 CN2301698Y (en) | 1997-08-27 | 1997-08-27 | Semi-automatic shotgun locking and unlocking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97250969 CN2301698Y (en) | 1997-08-27 | 1997-08-27 | Semi-automatic shotgun locking and unlocking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2301698Y true CN2301698Y (en) | 1998-12-23 |
Family
ID=33957377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97250969 Expired - Fee Related CN2301698Y (en) | 1997-08-27 | 1997-08-27 | Semi-automatic shotgun locking and unlocking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2301698Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487115A (en) * | 2019-07-31 | 2019-11-22 | 中国人民武装警察部队工程大学 | A kind of portable sentry post sets gun apparatus and sets rifle method |
-
1997
- 1997-08-27 CN CN 97250969 patent/CN2301698Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487115A (en) * | 2019-07-31 | 2019-11-22 | 中国人民武装警察部队工程大学 | A kind of portable sentry post sets gun apparatus and sets rifle method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |