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1. 发明专利

JPH0894292A TRIGGER MECHANISM FOR MACHINE GUN 失效
公开(公告)号：JPH0894292A
公开(公告)日：1996-04-12
申请号：JP26603794
申请日：1994-09-22
申请人： JAPAN STEEL WORKS LTD
发明人： YOSHIMATSU MORIYOSHI
IPC分类号： F41A9/00 , F41A7/02 , F41A7/10 , F41A17/00 , F41A19/59
摘要： PURPOSE: To stabilize a shooting stopping-operation by preventing a malfunction of a bullet feed stopper. CONSTITUTION: A trigger mechanism 9 has the bullet feed stopper 12 of a trigger 10 so that it may freely get in or out at an ammunition passage 7 between a pullet feeder 4 and a trigger driver 11 having a feed wheel 6, and an operating lever 16, an operating shaft 18, a lock lever 19, a lock block 20, a releasing shaft 22, etc., is coupled to be driven at the stopper 12. At the time of stopping shooting, the stopper 12 is disposed at the stopping position as shown to prevent the passage of an ammunition W and to stop the feeding to the wheel 6, and hence even if the wheel 6 is operated, the ammunition W is not fed to a bolt 5, and not shot. In this case, the driver 11 is in a non-operating state, and the block 20 is prevented from being rotated forward of the lever 19. Thus, the stopper 12 is prevented from being floated due to vibration, impact, etc., by the lever 16 integral with the lever 19, and held at the stopping position.

2. 发明专利

JPH07174486A BOLT TYPE MACHINE GUN 失效
公开(公告)号：JPH07174486A
公开(公告)日：1995-07-14
申请号：JP35306193
申请日：1993-12-16
申请人： JAPAN STEEL WORKS LTD
发明人： YOSHIMATSU MORIYOSHI
IPC分类号： F41A3/38 , F41A5/24 , F41A7/02
摘要： PURPOSE:To keep a high precision of getting a target by a method wherein an operation cam for operating a lock lever is engaged with the lock lever while a cannon returns from its rear seat position to its starting position, an engagement with the lock lever is released just before the bolt part closes the and the seat returning operation of the gun is set to be stabilized. CONSTITUTION:After closing a lock claw 8, a reverse hook 17 is abutted against a reverse hook operating cam and depressed downwardly and then a stopper for the reverse hook is released from a striker 15. The striker 15 moves forward under a resilient force of a striker spring 16, projects from a front end of a bolt part 4 to repel an ammunition W and then the cannon 3 and the bolt 4 are returned back to their seats under a reaction caused by launching of the bullet. A stopping projection 9 of a lock lever passes through an operating cam 12 while the barrel 3 moves back to its seat, thereby a front part of the lock lever 7 is moved inwardly and the lock claw 8 of the lock lever is released. With such an arrangement as above, the connected state between the barrel 3 and the bolt part 4 is released. Accordingly, the seat returning operation of the barrel 3 can be stabilized and a high precision of getting a target can be maintained.

3. 发明专利

JP3103983B2 失效
公开(公告)号：JP3103983B2
公开(公告)日：2000-10-30
申请号：JP51125295
申请日：1994-10-06
IPC分类号： F41A3/26 , A61P15/02 , C07D409/12 , F16F15/073 , F41A3/54 , F41A3/64 , F41A3/66 , F41A3/72 , F41A3/78 , F41A3/82 , F41A7/02 , F41A9/32 , F41A9/33 , F41A17/42 , F41A19/30 , F41A19/31

4. 发明专利

JP2901871B2 失效
公开(公告)号：JP2901871B2
公开(公告)日：1999-06-07
申请号：JP10168194
申请日：1994-04-18
申请人： NIPPON SEIKOSHO KK
发明人： YOSHIMATSU MORYOSHI
IPC分类号： F41A3/68 , F41A7/02 , F41A7/10 , F41A17/18 , F41A17/42

5. 发明专利

JPH07174488A BOLT PART DRIVING MECHANISM 失效
公开(公告)号：JPH07174488A
公开(公告)日：1995-07-14
申请号：JP35306493
申请日：1993-12-16
申请人： JAPAN STEEL WORKS LTD
发明人： YOSHIMATSU MORIYOSHI
IPC分类号： F41A3/12 , F41A7/02 , F41A7/10
摘要： PURPOSE:To perform a smooth and efficient driving of a bolt for a long period of time without making any complex shape of a cam groove. CONSTITUTION:A cam drum 8 is constructed such that many cam grooves 10 are formed, and a bolt part 4 is driven to be reciprocated with one cycle of advancing, stopping, retracting and stopping under its two-rotations. A cam follower 11 is provided with a yoke-shaped supporting shaft 17 having a pair of yokes 20. The yoke-shaped supporting shaft 17 is rotatably arranged and each of the yokes 20 is engaged with the cam grooves 10 through a rotating bearing 1..8 while being rotated and contacted with them. As the cam drum 8 is rotated, each of the yokes 20 is moved while being rotatably contacted with the cam grooves 10 through the rotating bearing 18, its forward or rearward movement is transmitted to the bolt part 4 through the yoke-shaped supporting shaft 17 so as to reciprocate the bolt 4. Since the cam follower 11 and the cam grooves 10 are rotatably contacted from each other, abrasion of respective member is less, the bolt part 4 is driven stably, smoothly and efficiently for a long period of time and so a location where an inclining angle of the cam grooves 10 is not necessary to be widened.

6. 发明专利

JPH07174487A METHOD AND DEVICE FOR CLOSING MACHINE GUN 失效
公开(公告)号：JPH07174487A
公开(公告)日：1995-07-14
申请号：JP34455193
申请日：1993-12-20
申请人： JAPAN STEEL WORKS LTD
发明人： YOSHIMATSU MORIYOSHI , WATANABE HIDEYUKI
IPC分类号： F41A3/12 , F41A7/02 , F41A7/10
摘要： PURPOSE:To provide a method and a device for closing a machine gun in which a bolt part can be made small in size, its weight can be light and concurrently a driving force for a cam drum for driving the bolt part is also reduced. CONSTITUTION:In the case that a bolt part is changed from an advancing stage to an advancing stopping stage as a cam drum 10 is rotated, a lock ring 3 is rotated by a first projection cam 10c by a desired angle alpha, a lock member 18 is pushed inwardly by a pressing cam 3b, the lock member 18 is engaged with an engaging concave part 11b of an ammunition 11 so as to keep the barred 1 in its closed state. Further, when the bolt part is changed from the advancing stopping stage to a retracting stage, the lock ring 3 is rotated by a second projection cam 10c' by the desired angle alpha, the engaged state between the pushing cam 3b and the lock member 18 is released, the lock member 18 is returned in an outward direction and the engaged state between the lock member 18 and the engaging concave part 11b is released.

7. 发明专利

JP2787274B2 失效
公开(公告)号：JP2787274B2
公开(公告)日：1998-08-13
申请号：JP34037593
申请日：1993-12-09
申请人： NIPPON SEIKOSHO KK
发明人： YOSHIMATSU MORYOSHI
IPC分类号： F41A7/02 , F41A9/01 , F41A9/22 , F41A9/47

8. 发明专利

JP2630735B2 失效
公开(公告)号：JP2630735B2
公开(公告)日：1997-07-16
申请号：JP35306293
申请日：1993-12-16
申请人： NIPPON SEIKOSHO KK
发明人： YOSHIMATSU MORYOSHI
IPC分类号： F41A3/26 , F41A7/02

9. 发明专利

JPH08506653A 失效
公开(公告)号：JPH08506653A
公开(公告)日：1996-07-16
申请号：JP51125295
申请日：1994-10-06
IPC分类号： F41A3/26 , A61P15/02 , C07D409/12 , F16F15/073 , F41A3/54 , F41A3/64 , F41A3/66 , F41A3/72 , F41A3/78 , F41A3/82 , F41A7/02 , F41A9/32 , F41A9/33 , F41A17/42 , F41A19/30 , F41A19/31

10. 发明专利

JPH07208898A BREECHBLOCK DRIVING DEVICE 失效
公开(公告)号：JPH07208898A
公开(公告)日：1995-08-11
申请号：JP1580494
申请日：1994-01-14
申请人： JAPAN STEEL WORKS LTD
发明人： YOSHIMATSU MORIYOSHI
IPC分类号： F41A3/60 , F41A7/02 , F41A7/10
摘要： PURPOSE:To obtain shooting time intervals of two kinds by providing a small- sized device. CONSTITUTION:A protruding part 14a is formed on a breechblock 14. A loop-like cam groove 16a is formed on an outer peripheram face of a cam drum 16 so as to cross the axial line of the cam drum. The protruding part of the breechblock is slidably fitted into the cam groove of the cam drum. Planetary reduction gear mechanisms 17a and 17b having a different reduction ratio are disposed in the cam drum and at both the ends thereof. The input sides of both the planetary reduction gear mechanisms are so constituted as to be engaged with or disengaged from a driving shaft 20. The driving shaft is engaged with a motor 40. Both the planetary reduction gear mechanisms are so constituted that their operational conditions are mutually reversed in such a manner that, in the case where one of them is put in a driving condition, the other is put in an idling condition.

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