阅读说明：本技术 内外侧不同钥匙的随换装保险闩拨叉锁芯 (Shift fork lock core with replaceable safety latch for different keys on inner side and outer side ) 是由 陈玺 葛建秋 陈仁多 于 2018-05-28 设计创作，主要内容包括：一种内外侧不同钥匙的随换装保险闩拨叉锁芯,包括锁体(1)、外侧钥匙(2)、拨叉护体(7)、拨叉护套(13)、内侧钥匙(19)；所述的锁体(1)上连体设置拨叉护体(7),拨叉护体(7)半圆设置是保护拨叉套体(13)上拨叉中弹子(9),又能起到便于安装和更换拨叉套体(13)作用；所述的外侧锁芯(3)和拨叉护体(7)及拨叉套体(13)以及内侧锁芯(16)整体组装匹配。(A shifting fork lock core with a replaceable safety latch and different keys on the inner side and the outer side comprises a lock body (1), an outer key (2), a shifting fork protective body (7), a shifting fork protective sleeve (13) and an inner key (19); a shifting fork protective body (7) is integrally arranged on the lock body (1), and a semi-circle of the shifting fork protective body (7) protects a marble (9) in a shifting fork on a shifting fork sleeve body (13) and can play a role in facilitating installation and replacement of the shifting fork sleeve body (13); the outer lock cylinder (3), the shifting fork protection body (7), the shifting fork sleeve body (13) and the inner lock cylinder (16) are integrally assembled and matched.)

1. A shifting fork lock cylinder with a safety latch and different keys on the inner side and the outer side comprises a lock body (1), an outer key (2), a shifting fork protective body (7), a shifting fork protective sleeve (13) and an inner key (19), and is characterized in that; an opening of a safety bolt shifting fork (14) and an opening of an unlocking bolt shifting fork (15) are formed in the partial inner position of the middle section of the lock body (1); the shifting fork protection body (7) is connected with the lock body (1), and the shifting fork protection body (7) is designed to be semicircular to protect a marble (9) in the shifting fork on the shifting fork sleeve body (13); the outer lock cylinder (3), the shifting fork protection body (7), the shifting fork sleeve body (13) and the inner lock cylinder (16) are integrally matched.

2. The shift cylinder of a shift fork with a safety latch for different keys on the inside and outside according to claim 1, wherein; the rear end of the shifting fork sleeve body (13) is integrally provided with a safety catch shifting fork (14), and the shifting fork sleeve body (13) is provided with a radius shifting fork rotating angle limiting hole (11) which plays a role in limiting and rotating the shifting fork sleeve body (13) and the safety catch shifting fork (14).

3. A shift cylinder with a safety latch for different keys on both inner and outer sides according to claim 1 or 2, wherein; the pin tumbler pits on two sides of the outer side key (2) are unified, and the pin tumbler pits of the safety latch shifting fork (14) are additionally arranged at the end part of the other side of the outer side key (2) and are matched with the shifting fork lower pin tumbler (8), the shifting fork middle pin tumbler (9) and the shifting fork upper pin tumbler (10) to open the safety latch shifting fork (14).

(I) technical field

The invention relates to an improved lock core of a mechanical shifting fork safety latch.

(II) background of the invention

With the improvement of the living standard of human beings, the pursuit of the vigor and luxury is a common target of people. However, the lock cylinder control function technology of various high, medium and low-grade anti-theft doors which is in the soul and luxury in the world market is old, and the lock cylinder of the anti-theft door is opened or locked by controlling codes by two same-pattern keys in the traditional way; or the magnetic coding key is used for unlocking the lock bar of the anti-theft door, and the function of locking the safety lock bar of the anti-theft door by using the key is lacked. Aiming at the technical structure that the existing lock core controls the rotation system to have single function, the following hidden troubles exist; a. the technology has long development and use history and single function, and can still control the code to open and lock the bolt by two-sided same-pattern keys regardless of the addition of any safety control function, the technology is mastered by professional lock matching technicians and social law violation personnel, and the series of various anti-theft door locks are opened frequently. b. An unariorittic child locks the safety catch of the anti-theft door lock reversely when playing at home, but the child cannot understand how to open the reverse locking safety catch, so that the child is often in the most dangerous position under the panic condition, for example, a child substation hits and breaks the door after the door, and the child is possibly injured; or use pistol brill class instrument to bore the lock, child just listens the strange sound earlier and more can lead to child psychology to fear to be in the danger of losing the reason among the panic and going to find the export. The technology obviously lacks security and precaution knowledge, and enables owners far away from the family to worry about that the safety of property in the family becomes a common wish of all human beings. The technical development solves the problem that the master can be safely away from the home door after the original key is used for reversely locking the safety latch of the anti-theft door and the original tong key is used for locking the safety latch of the anti-theft door in place above the rotation circle of the anti-theft door lock. The technology develops the following safety function; 1. the anti-theft door lock has the function of locking the safety latch reversely when the anti-theft door lock is played by children. However, the original key is used to unlock the anti-theft door back locking safety latch, so that accidents are avoided. 2. The technical control function structure is unique, the control system is advanced, and the anti-theft door lock can only be opened by using any unlocking tool or unlocking a back-locking safety latch of the anti-theft door by corresponding skillful professional unlocking technicians in the society, and the anti-theft door lock can only be selectively opened with one anti-theft door lock control function. The development of the technology can solve the worries behind for the safety precaution of human portals, is a scientific research result for human somnolence, and belongs to a great revolution of the whole human industry.

Disclosure of the invention

In view of the defects in the prior art, the invention aims to provide the lock cylinder with the replaceable safety latch shifting fork of different keys on the inner side and the outer side.

The invention is accomplished through the following scheme that the shifting fork lock cylinder with the replaceable safety latch and different keys on the inner side and the outer side comprises a lock body, an outer key, a shifting fork protection body, a shifting fork protection sleeve and an inner key; the inner part of the middle section of the lock body is provided with an opening for a safety bolt shifting fork and an opening for an unlocking spring bolt shifting fork; the shifting fork protection body is connected with the lock body, and the semi-circular shifting fork protection body is used for protecting a spring in the shifting fork on the shifting fork sleeve body; the outside lock cylinder, the shifting fork protection body, the shifting fork sleeve body and the inside lock cylinder are integrally matched.

The rear end of the shifting fork sleeve body is integrally provided with a safety catch shifting fork, and the shifting fork sleeve body is provided with a radial shifting fork rotating angle limiting hole which plays a role in limiting rotation of the shifting fork sleeve body and the safety catch shifting fork.

The pin tumbler pits on two sides of the outer key are uniform, and the pin tumbler pits of the safety latch shifting fork are additionally arranged at the end part of the other side of the outer key and are matched with the lower pin tumbler of the shifting fork, the middle pin tumbler of the shifting fork and the upper pin tumbler of the shifting fork to open the safety latch shifting fork.

The invention discloses a shifting fork lock cylinder of a safety latch with different keys on the inner side and the outer side, which is developed by the technology, provides manufacturers with more convenient assembly, solves the technical problems of practicability and convenient decoration in the technical field of lock industry, really is a scientific research result for people to relieve sleepiness, and really belongs to a great revolution of the whole human lock industry.

(IV) description of the drawings

The invention has the following drawings

FIG. 1 is a side cross-sectional view of a master of a shift fork with safety latch according to the present invention with different keys on the inside and outside.

FIG. 2 is a front view of a shift cylinder with a safety latch according to the present invention with different keys on the inside and outside (FIG. 2 is twice as large as FIG. 1).

FIG. 3 is a rear sectional view of a shift fork guard and a shift fork sheath of a shift cylinder of the safety latch with different keys on the inside and outside of the present invention (FIG. 3 is twice of FIG. 1).

(V) detailed description of the preferred embodiments

The attached drawings disclose the technical structure of the invention, and the embodiment of the invention is further described in detail in the following with the attached drawings: comprises a lock body (1), an outer side key (2), a shifting fork protective body (7), a shifting fork protective sleeve (13) and an inner side key (19); the lock body (1) is formed by casting copper materials, through lock cylinder holes are formed in the inner side and the outer side of the lock cylinder section of the lock body (1), and openings of a safety bolt shifting fork (14) and an unlocking bolt shifting fork (15) are formed in the partial inner position of the middle section of the lock body (1); the shifting fork sleeve body (13) and the safety bolt shifting fork (14) are arranged in a connected mode, a shifting fork protective body (7) is arranged on the lock body (1) with the opening of the safety bolt shifting fork (14) and the opening of the unlocking bolt shifting fork (15) in a connected mode, the shape of the shifting fork protective body (7) is designed to be semicircular, the purpose that the semicircular shape of the shifting fork protective body (7) is arranged is to protect a marble (9) in the shifting fork on the shifting fork sleeve body (13) from rotating and falling off, so that the effect of failure is achieved, and the effect of facilitating installation and replacement of the shifting fork; the rear end of the shifting fork sleeve body (13) is integrally provided with a safety catch shifting fork (14), the shifting fork sleeve body (13) is provided with a radius shifting fork rotating angle limiting hole (11), and the purpose of arranging the shifting fork rotating angle limiting hole (11) is to control the shifting fork sleeve body (13) and the safety catch shifting fork (14) to rotate in a limiting manner about 90 degrees; the outer lock cylinder (3), the shifting fork protective body (7), the shifting fork sleeve body (13) and the inner lock cylinder (16) are integrally assembled and matched, the outer lock cylinder (3) is inserted into an outer lock cylinder hole of the lock body (1), the shifting fork sleeve body (13) and the unlocking lock tongue shifting fork (15) are sleeved when the outer lock cylinder (3) is inserted to the position of an opening of a safety bolt shifting fork (14) and the unlocking lock tongue shifting fork (15), a plurality of marble holes are drilled on the outer lock cylinder (3) and the outer lock body (1), lower marbles (4), upper marbles (5) and springs (6) are filled into the marble holes for sealing, shifting fork marble holes are drilled on the shifting fork protective body (7) and the shifting fork sleeve body (13) at the inner section of the lock body (1) and the outer lock cylinder (3), shifting fork limiting holes are drilled at positions deviated from the inner points of the shifting fork marble holes, and lower marbles (8), middle marbles (9) and upper marbles (10) and springs (10) of the shifting fork are filled into the shifting fork holes, a shifting fork limiting pin (12) is arranged in the shifting fork limiting hole for sealing; the inner lock cylinder (16) is inserted into the inner lock cylinder hole of the lock body (1) and is inserted with the inner lock cylinder (16), a plurality of marble holes are drilled on the inner lock cylinder (16) and the inner lock body (1), and a lower marble (17), an upper marble (18) and a spring seal are filled in each marble hole; the length of the outer side key (2) needs to be inserted into a shifting fork limiting pin (12) penetrating through the shifting fork sleeve body (13), pin tumbler pits on two sides of the outer side key (2) are designed uniformly, a pin tumbler pit for opening a safety latch shifting fork (14) is additionally arranged at the end part of the other side of the outer side key (2), and the pin tumbler pit of the safety latch shifting fork (14) is matched with a lower pin tumbler (8) of the shifting fork, a middle pin tumbler (9) of the shifting fork and an upper pin tumbler (10) of the shifting fork for opening the safety latch shifting fork (14); the inner side key (19) is specially used for the inner side lock core (16), the inner side key (19) is shorter than the outer side vanadium key (2), the pit design function of the inner side key (19) is single, the pin tumbler pits on the two sides of the inner side key (19) are still designed uniformly, and the front side and the back side are designed the same.