TWI762345B - Button lock with number change and foolproof function - Google Patents

Abstract

The invention relates to a key lock, which comprises a shell, a password assembly, a lock bolt, a lock arm, a number-changing button and a number-changing protection mechanism. The cryptographic component has a plurality of inputs and an output. When the user enters the correct opening number by pressing the input, the output separates the locking arm from the locking bolt to allow the locking bolt to rotate freely. The number changing button is connected with the password assembly and can be rotated to a fixed position or a set position, and the unlocking number of the key lock can be reset when the set position is set. The number-changing protection mechanism is arranged on the casing. When the correct opening number is not input and the number-changing button is in a fixed position, the number-changing protection mechanism will restrict the number-changing button from being unable to rotate relative to the casing. Therefore, in the present invention, the number change button cannot be reversed without inputting the correct opening number, so as to avoid damage to the key lock due to operation errors.

Description

Button lock with number change and foolproof function

This creation is a kind of lock, especially a key lock used in lockers or safes, which allows users to set digital passwords by themselves.

In the prior art, the key lock provided in the locker usually has a plurality of numeric keys, and the locker can be opened only after the user presses and inputs the correct opening number.

In order to improve the safety and convenience of the key lock, some manufacturers have developed a key lock with a changeable opening number, and a number change button is further arranged on the back of the key lock. The number change button is connected with the password component in the key lock, and the state of the key lock can be changed to a state that can be set by the user by twisting the number change button. The steps for users to change the activation number by themselves are as follows:

1. Press and enter the correct opening number to open the locker.

2. Rotate the number change button on the back of the key lock from the "fixed position" to the "set position".

3. Use the numeric keys to set a new open number.

4. Return the number change button to the “fixed position” to complete the process of setting the newly opened number.

However, the user must completely follow the aforementioned steps. If an operation error occurs, the key lock may easily malfunction or even damage the key lock. Specifically, the user must first enter the correct opening number to make the key lock in the released state, and then turn the number change button; If you twist the number change button, the number change button will drive other mechanisms in the key lock in a wrong way, causing the key lock to malfunction or even break the lock. Existing key locks therefore frequently fail and have poor reliability.

Therefore, the key locks of the prior art need to be improved.

In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a key lock with a foolproof function of number change, which is further provided with a number change protection mechanism, which can lock the number change button when the correct opening number is not input, thereby improving the Reliability of existing key locks.

In order to achieve the above creation purpose, the technical means used in this creation is to design a key lock, which includes: a shell; A cipher assembly, which is arranged in the housing, and has: a control body; a plurality of input pieces, which are slidably connected to the control mechanism; each of the input pieces has a decoding position relative to the control mechanism; an output piece, which is slidably connected to the control mechanism; when the input pieces are respectively located at the decoding positions, the control mechanism makes the output piece move to a release position, and the password assembly is defined as a release state at this time; When any of the input pieces is separated from the corresponding decoding position, the control mechanism moves the output piece to a locked position, and the password assembly is defined as a locked state at this time; a lock bolt, which is arranged on the casing and can be rotated relative to the casing to a lock-locking position or a lock-unlocking position; a lock arm, which is connected to the output piece of the password assembly; when the output piece is at the locking position and the lock bolt is at the lock position of the lock, the lock arm restricts the lock bolt from being able to rotate relative to the housing; A number change button, which is arranged on the casing and connected to the control mechanism of the password assembly; the number change button can be rotated relative to the casing to a fixed position or a set position; when the number change button is at the set position, the decoding position of each of the inputs can be changed; A number changing protection mechanism is provided on the casing, when the output member is at the locking position and the number changing button is at the fixing position, the number changing protection mechanism restricts the number changing button from rotating relative to the casing.

The use of the present invention is the same as the existing key lock, and the advantage is that when any input piece of the password assembly (equivalent to the numeric keys of the prior art) is out of the corresponding decoding position (equivalent to When the correct opening code is not inputted), the output of the password assembly will drive the number-changing protection mechanism, thereby restricting the number-changing button from being unable to rotate relative to the housing. In this way, even if the user tries to turn the number change button at the wrong time due to any reason such as an operation error, the number change protection mechanism will block the number change button, thereby preventing the wrong number change button from being driven incorrectly due to an operation error. Other mechanisms in the key lock can cause the key lock to malfunction or even be locked.

Further, in the key lock with the function of changing the number and foolproof function, wherein the number-changing button protrudes to form a button limiting part; the number-changing protection mechanism is rotatably connected to the shell; the key lock further comprises a reset elastic a piece, which abuts against the number-changing protection mechanism, and makes the number-changing protection mechanism tend to rotate in a direction away from the number-changing button; when the output piece of the password assembly moves to the locking position, the output piece abuts against The sign changing protection mechanism forces the sign changing protection mechanism to rotate toward the direction close to the sign changing button to the moving path of the button limiting portion of the sign changing button to restrict the sign changing button from being unable to rotate relative to the housing.

Further, in the described key lock with the function of changing number and foolproofing, wherein the number-changing button is cylindrical, and the button limiting portion is protruded and formed on the outer ring surface of the number-changing button; the number-changing protection mechanism is further There is a pressing plate, which is rotatably connected to the shell, and the reset elastic piece pushes against the pressing plate in the direction of the output member; a stopper has a pressing plate end and a number-changing button end; the pressing plate end is connected to the pressing plate, and the The end of the number-changing button extends to one side of the number-changing button; wherein, when the output piece is located at the locking position and the number-changing button is at the fixed position, the output piece pushes against the pressing plate and makes the stopper The end of the number changing button moves to the moving path of the button limiting portion of the number changing button to limit the rotation of the number changing button relative to the housing.

Further, in the key lock with the function of changing numbers and foolproofing, the pressure plate end of the stopper is rotatably connected to the pressure plate, and a stopper limit portion of the stopper can abut against the pressure plate to restrict Rotation of the stop block toward the pressure plate; the number change protection mechanism further has a stop block elastic piece, which is arranged between the stop block and the pressure plate, and drives the stop block to rotate toward the number change button, and makes the stop block The stopper limiting portion of the block abuts against the pressing plate.

Further, in the key lock with the function of changing number and foolproofing, wherein the number-changing button protrudes to form a button stop; the number-changing protection mechanism is rotatably connected to the casing, and has a first end and a the second end; when the output piece of the password assembly moves to the locking position, the output piece abuts against the first end of the code change protection mechanism, and forces the second end of the code change protection mechanism to approach the The direction of the number-changing button is rotated to the movement path of the button limit portion of the number-changing button to limit the rotation of the number-changing button relative to the housing; wherein, the first end of the number-changing protection mechanism can be opposite to the second The ends are elastically bent and deformed.

Please refer to FIG. 1 , FIG. 2 and FIG. 7 , the key lock with the function of number changing and foolproofing of the present invention includes a casing 10 , a password assembly 20 , a locking bolt 30 , a locking arm 40 , and a number changing button 50 . and a number-changing protection mechanism 60 ; and in this embodiment, a reset elastic member 70 is further included. The key lock of the present invention is preferably arranged on the door A1 of a safe or a locker, and can be engaged with the door frame A2 to prevent the door A1 from opening.

Specifically, the housing 10 is a square shell, which is assembled by an upper cover 11 and a lower cover 12, and has an inner space.

The aforementioned password assembly 20 is disposed in the casing 10 and has a control mechanism 21 , a plurality of input pieces 22 and an output piece 23 . The control mechanism 21 is the core component of the cipher assembly 20, comprising a plurality of plates, blocks and cylinders that are parallel to each other and are directly or indirectly linked with each other. number or password, and correspondingly change the position of the output piece 23 according to whether the entered number is correct or not. The control mechanism 21 is a standard component in the prior art, so its detailed structure will not be repeated, and only some components of the control mechanism 21 are schematically shown in the drawings.

Please refer to FIG. 7 and FIG. 8 together, the input member 22 is slidably connected to the control mechanism 21 , and each input member 22 has a decoding position relative to the control mechanism 21 . In this embodiment, each input member 22 is a cylinder (slid), which can pass through the control mechanism 21 in a linear sliding manner. Each of the input members 22 is respectively provided with a number button 24 , and the number button 24 is exposed on the casing for the user to press to input a number. Each input member 22 has two positions relative to the control mechanism (respectively a home position and a pressing position), and one of the two positions is the aforementioned decoding position. The user changes the position of the input member 22 through the number button 24 , thereby inputting the unlocking number into the control mechanism 21 .

Please refer to FIG. 2 , FIG. 3 , FIG. 7 and FIG. 8 . The aforementioned output member 23 is slidably connected to the control mechanism 21 . When the input member 22 is located at the decoding position, the control mechanism 21 moves the output member 23 to a release position. position (as shown in FIG. 3 and FIG. 8 ), at this time, the password assembly 20 is defined as a release state; when any input member 22 is separated from the corresponding decoding position, the control mechanism 21 moves the output member 23 to a locked position ( As shown in FIG. 2 and FIG. 7 ), the password component 20 is defined as a locked state at this time. In other words, after the user inputs the correct opening number, the control mechanism 21 moves the output member 23 to the release position, otherwise the control mechanism 21 will fix the output member 23 in the locked position.

Specifically, the output member 23 is a sliding plate with a plurality of lateral branches, and the position of each branch corresponds to an input member 22 . The output member 23 is connected to the control mechanism 21 movably up and down. When the password assembly 20 is in the release state, the output member 23 moves upward to the release position; when the password assembly 20 is in the locked state, the output member 23 moves downward to the locked position.

Please refer to FIGS. 1 to 3 and FIG. 7 , the aforementioned lock bolt 30 is disposed on the housing 10 and can be rotated relative to the housing 10 to a lock-locking position or a lock-unlocking position. In this embodiment, the lock bolt 30 includes a sleeve 31 , a door bolt 32 and a rotary knob 33 . The sleeve 31 is rotatably located in the casing 10 , the latch 32 protrudes from one side of the casing 10 , and the rotary knob 33 is exposed outside the casing 10 and is used for the user to rotate. When the lock bolt 30 is rotated to the lock position, the door bolt 32 engages with the door frame A2 to prevent the door A1 from being opened.

The aforementioned locking arm 40 is connected to the output member 23 of the password assembly 20 . When the output member 23 is in the locking position and the locking bolt 30 is at the locking position of the lock, the locking arm 40 restricts the locking bolt 30 from rotating relative to the housing 10 . In this embodiment, the lock arm 40 is a seesaw-shaped rod body, and one end of the lock arm 40 is connected to the output member 23 of the password assembly 20 . When the password assembly 20 is in the locked state, when the output member 23 moves downward to the locked position, the other end of the lock arm 40 engages with the sleeve 31 of the lock bolt 30 to limit the lock bolt 30 from being unable to rotate (as shown in FIG. 2 ); When the password assembly 20 is in the release state, when the output member 23 moves upward to the release position, the other end of the lock arm 40 is separated from the sleeve 31, and the lock bolt 30 can rotate freely (as shown in FIG. 3 ).

Please refer to FIG. 4 to FIG. 6 and FIGS. 9 and 10 . The aforementioned number-changing button 50 is disposed on the housing 10 and is connected to the control mechanism 21 of the password assembly 20 . The number changing button 50 can be rotated relative to the housing 10 to a fixed position (as shown in FIG. 4 ) or a set position (as shown in FIG. 6 ). When the number change button 50 is in the setting position, the decoding position of each input element 22 can be changed, that is, the user can set the opening password by himself. Specifically, the number changing button 50 has a cylindrical shape with a plurality of diameter changes, and a button limiting portion 51 is formed protruding from the outer ring surface thereof.

The aforementioned number-changing protection mechanism 60 is provided on the casing 10. When the output member 23 is in the locking position (that is, any input member 22 is released from the decoding position), and the number-changing button 50 is in the fixed position, the number-changing protection mechanism 60 restricts the number change. The button 50 cannot be rotated relative to the housing 10, thereby preventing the number changing button 50 from driving the control mechanism 21 by mistake, resulting in abnormal function or damage.

The aforementioned reset elastic member 70 abuts against the number-changing protection mechanism 60, and makes the number-changing protection mechanism 60 tend to rotate in a direction away from the number-changing button 50, so that when the output member 23 moves upward to the release position (that is, the input is correct) When the number is turned on), the number change protection mechanism 60 will be separated from the number change button 50, thereby allowing the user to twist the number change button 50. In other preferred embodiments, the number change protection mechanism 60 and the control mechanism 21 can also be connected only through the link mechanism without the reset elastic member 70, but the reset elastic member 70 can simplify the mechanism to improve reliability and reduce cost.

In this embodiment, the number change protection mechanism 60 has a pressing plate 61 , a block 62 and a block elastic member 63 . The pressing plate 61 is rotatably connected to the housing 10 , and the restoring elastic member 70 pushes against the pressing plate 61 in the direction of the output member 23 .

The stopper 62 has a pressing plate end 621 , a number changing button end 622 and a stopper limiting portion 623 . The pressure plate end 621 is rotatably penetrated through the pressure plate 61; the number changing button end 622 extends to one side of the number changing button 50; The pressing plate 61 restricts the rotation of the stopper 62 toward the pressing plate 61 .

The stopper elastic member 63 is arranged between the stopper 62 and the pressure plate 61 , and the stopper 62 is driven to rotate toward the number-changing button 50 , and the stopper stopper 623 of the stopper 62 abuts against the pressure plate 61 , so that the stopper 62 The block 62 and the pressing plate 61 maintain a fixed angle. When the output member 23 is at the locking position and the number changing button 50 is at the fixed position, the output member 23 pushes against the pressing plate 61 and moves the number changing button end 622 of the stopper 62 to the position of the button limiter 51 of the number changing button 50 On the moving path, the number changing button 50 cannot be rotated relative to the housing 10 .

The main function of the stopper elastic member 63 is to allow a small relative rotation between the stopper 62 and the pressing plate 61, so that when the output member 23 is in the locked position, the number changing button 50 does not work due to various reasons such as misoperation. When returning to the fixed position, the number changing button end 622 of the stopper 62 can move slightly away from the number changing button 50 to avoid being damaged by squeezing the button limiting portion 51 .

The specific structure of the sign change protection mechanism 60 is not limited to this, as long as both ends of the sign change protection mechanism 60 can be elastically bent and deformed, the effect of avoiding extrusion damage can be achieved. For example, in other preferred embodiments, the number-changing protection mechanism 60 only needs to have a first end (equivalent to the pressing plate 61 of the preferred embodiment) and a second end (equivalent to the stopper limiter of the preferred embodiment) 623), when the output piece 23 of the password assembly 20 moves to the locked position, the output piece 23 abuts against the first end of the number-changing protection mechanism 60, and forces the second end of the number-changing protection mechanism 60 to move toward the side close to the number-changing button 50. The direction is rotated to the movement path of the button limit portion 51 of the number changing button 50 to limit the rotation of the number changing button 50 relative to the housing 10. As long as the first end can be elastically bent and deformed relative to the second end, it can be avoided. For the effect of crushing damage, for example, the number-changing protection mechanism 60 can be integrally formed with a slightly elastic material.

To sum up, by further providing the number change protection mechanism 60 in the present invention, when the user tries to twist the number change button 50 at the wrong time due to any reason such as operation error, the number change protection mechanism 60 will get stuck in the number change The button 50 makes it impossible to rotate, thereby protecting other mechanisms in the key lock from being damaged due to operation errors, and has the effect of preventing fools, which can improve the reliability of the key lock.

The above is only the preferred embodiment of the creation, and does not limit the creation in any form. Although the creation has been disclosed as above in the preferred embodiment, it is not intended to limit the creation. Those of ordinary knowledge, within the scope of the technical solution of this creation, can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above. The technical essence of the creation Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the creation.

10: Shell 11: upper cover 12: Lower cover 20: Cipher Components 21: Control mechanism 22: Input Pieces 23: Output Pieces 24: Number button 30: Lock bolt 31: Sleeve 32: Door Bolt 33: Rotary Knob 40: lock arm 50: Change number button 51: Button limiter 60: Change number protection mechanism 61: Platen 62: Stop 621: Platen end 622: Change number button end 623: Stopper limit 63: Block elastic piece 70: reset elastic A1: Door slice A2: door frame

Figure 1 is a schematic front view of the creation installed in a safe. Figures 2 and 3 are schematic diagrams of the front view of this creation, showing that the output piece moves down from the locking position to the releasing position, the locking arm releases the restricting lock bolt, the locking bolt rotates from the locking position of the lock to the unlocking position of the lock, and the number-changing protection mechanism Unrestrict the sign change button to twist. Figures 4 to 6 are schematic diagrams of the rear view of the present invention, wherein Figures 5 and 6 show that the sign changing button is rotated from the fixed position to the set position. 7 and 8 are schematic side views of the present invention, showing that the input piece is moved to the decoding position, and the output piece is moved down from the locking position to the releasing position. Fig. 9 is a three-dimensional appearance view of some components of the present creation, showing the relative relationship between the number-changing protection mechanism and the casing from an oblique rear and upper perspective. Fig. 10 is an exploded view of the three-dimensional components of the sign changing protection mechanism of the present invention.

10: Shell

12: Lower cover

20: Cipher Components

21: Control mechanism

23: Output Pieces

30: Lock bolt

31: Sleeve

32: Door Bolt

40: lock arm

50: Change number button

51: Button limiter

60: Change number protection mechanism

61: Platen

62: Stop

622: Change number button end

70: reset elastic

Claims (5)

A key lock with the function of changing numbers and foolproofing, comprising: a shell; A cipher assembly, which is arranged in the housing, and has: a control body; a plurality of input pieces, which are slidably connected to the control mechanism; each of the input pieces has a decoding position relative to the control mechanism; an output piece, which is slidably connected to the control mechanism; when the input pieces are respectively located at the decoding positions, the control mechanism makes the output piece move to a release position, and the password assembly is defined as a release state at this time; When any of the input pieces is separated from the corresponding decoding position, the control mechanism moves the output piece to a locked position, and the password assembly is defined as a locked state at this time; a lock bolt, which is arranged on the casing and can be rotated relative to the casing to a lock-locking position or a lock-unlocking position; a lock arm, which is connected to the output piece of the password assembly; when the output piece is at the locking position and the lock bolt is at the lock position of the lock, the lock arm restricts the lock bolt from being able to rotate relative to the housing; A number change button, which is arranged on the casing and connected to the control mechanism of the password assembly; the number change button can be rotated relative to the casing to a fixed position or a set position; when the number change button is at the set position, the decoding position of each of the inputs can be changed; A number changing protection mechanism is provided on the casing, when the output member is at the locking position and the number changing button is at the fixing position, the number changing protection mechanism restricts the number changing button from rotating relative to the casing. The key lock with the function of changing numbers and foolproofing as described in claim 1, wherein The number changing button protrudes to form a button limiting part; The sign change protection mechanism is rotatably connected to the housing; The key lock further comprises a reset elastic member, which abuts against the number-changing protection mechanism, and makes the number-changing protection mechanism tend to rotate in a direction away from the number-changing button; When the output piece of the password assembly moves to the locking position, the output piece abuts against the number change protection mechanism and forces the number change protection mechanism to rotate towards the direction close to the number change button to the button limit of the number change button On the moving path of the position part, the change button cannot be rotated relative to the casing. The key lock with the function of changing numbers and foolproofing as described in claim 2, wherein The number-changing button is cylindrical, and the button limiting portion is protruded and formed on the outer ring surface of the number-changing button; The sign change protection mechanism further has a pressing plate, which is rotatably connected to the casing, and the reset elastic member pushes against the pressing plate in the direction of the output member; a stopper with a pressure plate end and a number changing button end; the pressure plate end is connected to the pressure plate, and the number changing button end extends to one side of the number changing button; Wherein, when the output piece is at the locking position and the number change button is at the fixed position, the output piece pushes against the pressure plate and moves the end of the stop block to the button of the number change button The movement path of the limiting portion is used to limit the change button from being unable to rotate relative to the housing. The key lock with the function of changing the number and foolproofing according to claim 3, wherein The pressure plate end of the stopper is rotatably connected to the pressure plate, and a stopper stopper of the stopper can abut against the pressure plate to limit the rotation of the stopper toward the pressure plate; The sign change protection mechanism further has A stopper elastic piece is arranged between the stopper and the pressing plate, and drives the stopper to rotate toward the number-changing button, and makes the stopper limiting portion of the stopper abut against the pressure plate. The key lock with the function of changing numbers and foolproofing as described in claim 1, wherein The number changing button protrudes to form a button limiting part; The sign change protection mechanism is rotatably connected to the housing and has a first end and a second end; When the output member of the password assembly moves to the locking position, the output member abuts against the first end of the code change protection mechanism, and forces the second end of the code change protection mechanism to move toward the side close to the code change button Rotate the direction to the movement path of the button limiter of the change button to limit the change button from being unable to rotate relative to the housing; Wherein, the first end of the sign changing protection mechanism can be elastically bent and deformed relative to the second end.

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