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CN-117684824-B - Mechanical coded lock capable of quickly replacing codes and method for modifying codes

CN117684824BCN 117684824 BCN117684824 BCN 117684824BCN-117684824-B

Abstract

The invention relates to the technical field of locks, in particular to a mechanical coded lock capable of quickly changing a code and a code modifying method. The switch sheet is provided with a plurality of first grooves, a locking part is arranged between every two first grooves, the key is positioned in the first grooves, the side wall of the key is provided with a second groove and a third groove, the key comprises a cipher key and a common key, the second groove of the cipher key faces the switch sheet, and the third groove of the common key faces the switch sheet. The embodiment of the invention has proper complexity, higher safety and reliability and extremely low cracking probability. In addition, the embodiment of the invention does not need a key, a power supply, a battery and waste pollutants. The full mechanical structure is adopted, the device can adapt to severe working environment, has wide application range, adopts the handle to rotate for unlocking, is simple to operate, has short unlocking time, can conveniently replace passwords, and is easy to operate.

Inventors

  • Ban Danghui
  • ZHONG ZHIJIN

Assignees

  • 佛山亨之宝五金实业有限公司

Dates

Publication Date
20260512
Application Date
20240124

Claims (9)

  1. 1. A mechanical combination lock for quick changing a combination, comprising: The switch piece is provided with a plurality of first grooves, and a locking part is arranged between every two first grooves; The keys are positioned in the first grooves, second grooves and third grooves are formed in the side walls of the keys, the planes of the second grooves are perpendicular to the planes of the third grooves, when the keys are not pressed down, the second grooves are higher than the switch sheet, the third grooves are flush with the switch sheet, when the keys are pressed down, the second grooves are flush with the switch sheet, the third grooves are lower than the switch sheet, the keys comprise cipher keys and common keys, the cipher keys and the common keys are respectively provided with the second grooves and the third grooves, the second grooves of the cipher keys face the switch sheet, and the third grooves of the common keys face the switch sheet; the handle rotates to drive the switch sheet to translate, and when the coded key is pressed down, the locking part of the switch sheet can pass through the second groove of the coded key and the third groove of the common key; the reset mechanism can reset after the key is pressed down; the code changing mechanism drives the key to rotate; The code changing mechanism comprises a first cam, a code changing piece and a code changing piece, the first cam rotates to drive the code changing piece to translate, a code changing hole is formed in the code changing piece, a code changing protrusion is arranged on the code changing piece, the code changing protrusion is located in the code changing hole, the code changing piece is sleeved on the key and is rotationally connected with the key, a circular arc groove which is a quarter of a circle is formed in the code changing piece, a first notch is formed in the circular arc groove, which is close to one end lower portion of the first cam, a second notch is formed in the other end lower portion of the circular arc groove, a first protrusion is arranged on the side face of the key, and when the key is not pressed down, the first protrusion is located in the circular arc groove.
  2. 2. The mechanical coded lock capable of quickly replacing a password according to claim 1, wherein a cam shaft is fixedly connected below the first cam, a limit groove is formed in one side, away from the handle, of the cam shaft, a limit piece is sleeved outside the cam shaft and clamped into the limit groove, a first spring is arranged between one end, away from the limit groove, of the limit piece and the first cam, and the switch piece can push the limit piece to be away from the limit groove.
  3. 3. The mechanical coded lock for quickly replacing a password according to claim 2, wherein the reset mechanism comprises a reset key and a reset plate, the reset key drives the reset plate to translate, a buckle piece is arranged on the side wall of the key, an elastic piece is arranged at the position, corresponding to the buckle piece, of the reset plate, when the key is pressed, the buckle piece is buckled with the elastic piece, and when the reset key is pressed, the reset plate drives the elastic piece to translate, and the buckle piece is tripped with the elastic piece.
  4. 4. The mechanical coded lock capable of quickly replacing codes according to claim 3, wherein the keys sequentially comprise a pressing plate, a code piece and a positioning seat from top to bottom, the code piece is sleeved with the button piece, the pressing plate is connected with the code piece through a second spring, and the code piece is connected with the positioning seat in a sliding mode through a third spring.
  5. 5. The mechanical coded lock capable of quickly replacing a code according to claim 4, wherein the code changing mechanism further comprises a positioning plate and a second cam, the second cam is located below the first cam and fixedly connected with the first cam, the second cam drives the positioning plate to translate, a plurality of positioning holes are formed in the positioning plate, positioning protrusions are arranged in the positioning holes, the bottom of the positioning seat is located in the positioning holes, positioning grooves are formed in the bottom surface of the positioning seat, and the positioning protrusions are inserted into the positioning grooves or far away from the positioning grooves along with the translation of the positioning plate.
  6. 6. The mechanical coded lock capable of quickly replacing a code according to claim 5, wherein the first cam and the second cam are fixedly connected, a key hole is formed in the middle of the first cam, the first cam and the second cam both rotate around the key hole, the first cam is in a quarter-circle arc shape, the first cam comprises a first right-angle side, a second right-angle side, a first circular-arc side and a second circular-arc side, the second circular-arc side is located between the first right-angle side and the second right-angle side, the distance between the key hole and the first right-angle side, the second circular-arc side and the second right-angle side is the same, the distance between the key hole and the first circular-arc side is larger than the distance between the key hole and the second right-angle side, the second cam comprises a first straight side and a third circular-arc side, the distance between a second cam rotating shaft and the first straight side is smaller than the distance between the rotating shaft and the third circular-arc side, the first straight side is parallel to the first straight side and the first straight side, and the first code contact is not changed.
  7. 7. The mechanical coded lock for quickly replacing a code according to claim 6, further comprising a base, wherein the switch sheet, the key, the handle, the reset mechanism and the code changing mechanism are all located in the base, the side wall of the cam shaft is connected with a marble through a fourth spring, a containing groove is formed in the position, close to the marble, of the base, and a rounding angle is formed in the position, close to one side, of the containing groove.
  8. 8. The mechanical coded lock for quickly changing a code according to claim 1, wherein the handle is fixedly connected with a third cam, and the third cam rotates to drive the switch sheet to translate.
  9. 9. A method for modifying a combination, characterized in that the combination of a mechanical combination lock for quick change of a combination according to any one of claims 6-7 is modified by the steps of: S1, typing in a correct password; s2, rotating handle S3, inserting a code changing key, and rotating the code changing key clockwise by 90 degrees; s4, loosening the handle; S5, pressing a reset key; S6, rotating the code-changing key 90 degrees clockwise; s7, typing in a new password; S8, rotating the code-changing key 180 degrees clockwise; s9, pressing a reset key; s10, pulling out the code-changing key.

Description

Mechanical coded lock capable of quickly replacing codes and method for modifying codes Technical Field The invention relates to the technical field of locks, in particular to a mechanical coded lock capable of quickly changing a code and a method for modifying the code. Background Currently, the existing domestic coded locks are generally divided into three categories, namely mechanical coded locks, electronic coded locks and electromechanical integrated coded locks. Mechanical combination locks have long been used. With the development of higher requirements on the performance of the anti-theft lock and the digital technology, a novel electronic coded lock controlled by a microprocessor has been widely used in recent years, and the novel electronic coded lock is characterized in that the electronic coded lock is easy and convenient to open and numerous in number and can be easily changed due to the fact that a key is not needed, and the electronic lock is easy to open due to the fact that the key is utilized, but the defects are obvious, such as the problem of reliability and stability of electronic components, the problem of vibration resistance of an electronic circuit board, the problem of service life of a battery and the like. In practical application, it can be found that the electronic coded lock is generally high in cost, and is sensitive to severe environments such as electromagnetic fields, temperature and humidity and the like due to dependence on electric energy, and serious consequences are caused once the electronic coded lock fails. Therefore, the mechanical coded lock capable of quickly changing the codes is provided. Disclosure of Invention The present invention is directed to a mechanical coded lock capable of quickly changing a code and a method for modifying the code, which at least solve one of the problems set forth in the background art. The technical scheme of the invention is as follows: a mechanical combination lock for quick change of a combination, comprising: The switch piece is provided with a plurality of first grooves, and a locking part is arranged between every two first grooves; The keys are positioned in the first grooves, second grooves and third grooves are formed in the side walls of the keys, the planes of the second grooves are perpendicular to the planes of the third grooves, when the keys are not pressed down, the second grooves are higher than the switch sheet, the third grooves are flush with the switch sheet, when the keys are pressed down, the second grooves are flush with the switch sheet, the third grooves are lower than the switch sheet, the keys comprise cipher keys and common keys, the cipher keys and the common keys are respectively provided with the second grooves and the third grooves, the second grooves of the cipher keys face the switch sheet, and the third grooves of the common keys face the switch sheet; the handle rotates to drive the switch sheet to translate, and when the coded key is pressed down, the locking part of the switch sheet can pass through the second groove of the coded key and the third groove of the common key; the reset mechanism can reset after the key is pressed down; The code changing mechanism drives the key to rotate. Further, the code changing mechanism comprises a first cam, a code changing piece and a code changing piece, the first cam rotates to drive the code changing piece to translate, a code changing hole is formed in the code changing piece, a code changing protrusion is arranged on the code changing piece and located in the code changing hole, the code changing piece is sleeved on the key and is rotationally connected with the key, a circular arc groove which is one-fourth of a circle is formed in the code changing piece, a first notch is formed in the circular arc groove, which is close to one end lower portion of the first cam, a second notch is formed in the other end lower portion of the circular arc groove, a first protrusion is arranged on the side face of the key, and when the key is not pressed down, the first protrusion is located in the circular arc groove. Further, first cam below fixedly connected with camshaft, the camshaft is kept away from one side of handle is provided with the spacing groove, the camshaft overcoat has the spacing piece, the spacing piece card is gone into in the spacing groove, the spacing piece is kept away from the one end of spacing groove with be provided with first spring between the first cam, the switch piece can promote the spacing piece is kept away from the spacing groove. Further, canceling release mechanical system includes reset key and reset plate, the reset key drives the translation of reset plate, the button lateral wall is provided with the cramp, the reset plate corresponds cramp department is provided with the shell fragment, when the button was pressed, the cramp with the shell fragment lock, when the reset key was pressed, the reset plate drives the translatio