Adjustable password door holder

Abstract

The utility model relates to the field of door holders, in particular to an adjustable password door holder which comprises a main lock body and an auxiliary lock body, lock tongues are arranged on the two sides of the auxiliary lock body, and the main lock body comprises a first shell, a second shell and an installation base. A first elastic piece, a locking block, a push button, a lock cylinder, a second elastic piece, a transmission piece and a shifting block are sequentially arranged between the first shell and the second shell from top to bottom. The lock block is provided with an inserting groove, a limiting protruding strip is arranged at the top of the inserting groove, the outer side of the lock cylinder is sequentially sleeved with a resetting piece and a code wheel from inside to outside, the transmission piece is provided with a through hole penetrating through the transmission piece, and the through hole penetrates through the bottom of the lock cylinder. Through reasonable arrangement of the first elastic piece, the lock block, the push button, the lock cylinder, the second elastic piece, the transmission piece and the shifting block, in the unlocking state, only the shifting block needs to be shifted, the password wheels can be rotated to change passwords, after the passwords are determined, the shifting block is shifted back, and higher convenience and autonomy are achieved. The problems that a traditional mechanical lock and an electronic lock are inconvenient to replace passwords and high in cost are solved.

Description

Technical Field

[0001] This utility model relates to the field of door latch technology, and in particular to an adjustable password door latch. Background Technology

[0002] A door latch, also known as a door lock or door bolt, is a mechanical device installed on a door to keep it closed and provide a degree of security. Its main function is to prevent unauthorized personnel from opening the door through a locking mechanism.

[0003] As people's demand for security and convenience continues to increase, traditional mechanical locks are gradually being replaced by various types of electronic locks and combination locks. However, traditional mechanical locks and electronic locks are lacking in flexibility. For example, changing the password often requires professional tools and technical support, which is neither convenient nor economical for ordinary users. Utility Model Content

[0004] To address the inconvenience and high cost of changing passwords in traditional mechanical and electronic locks.

[0005] This utility model provides an adjustable combination lock door latch, including a main lock body and a secondary lock body. The secondary lock body has latches on both sides. The main lock body includes a first housing and a second housing and a mounting base fixedly connected to both sides of the first housing. The bottom end of the second housing is hinged to the mounting base. Between the first housing and the second housing, from top to bottom, are arranged a first elastic element, a lock block, a push button, a lock cylinder, a second elastic element, a transmission element, and a dial block. The lock block has a slot, and the top of the slot has a limiting protrusion. From the inside to the outside, a reset element and a combination wheel are arranged on the outer side of the lock cylinder. The transmission element has a through hole, and the bottom of the lock cylinder has a through hole. When unlocking, rotate the combination wheel, enter the correct combination, press the push button, the lock cylinder moves down, the lock block moves up, the latch and the limiting protrusion separate, and the latch can be moved out of the slot. When changing the combination, it is necessary to be in the unlocked state, move the dial block, the transmission element and the reset element move up, and then move the combination wheel to change the combination.

[0006] Preferably, the inner side of the reset piece is provided with a lock groove, and the lock cylinder is provided with a lock protrusion. When unlocking, the lock protrusion is engaged in the lock groove, and when locking, the lock protrusion and the lock groove are misaligned.

[0007] Preferably, the outer side of the code wheel is provided with a vertical groove, the first housing is provided with a wheel groove and a paddle, the code wheel is installed in the wheel groove, and one end of the paddle protrudes and abuts against the code wheel.

[0008] Preferably, the inner top of the combination wheel is provided with a limiting groove, and the outer top of the reset component is provided with a limiting block, which can be inserted into the limiting groove.

[0009] Preferably, the second housing has a first notch, the locking blocks are located on both sides of the first notch, the slot and the first notch are connected, the secondary lock body has a protrusion, the locking tongue is located on both sides of the protrusion, and when locked, the protrusion is located inside the first notch.

[0010] Preferably, the second housing has second notches on both sides, the push button is exposed outside the second housing through the second notches, and a limiting protrusion is provided on one side of the push button, the width of the limiting protrusion being smaller than the width of the second notch.

[0011] Preferably, the first housing is provided with a guide bar, the push button is provided with a guide groove, and the guide bar is engaged inside the guide groove.

[0012] Preferably, the second housing is provided with a password hole, and the password wheel and the password hole correspond one-to-one; the second housing is provided with a dial hole, and the dial rod is exposed outside the second housing through the dial hole.

[0013] Preferably, the bottom surface of the lock block and the top surface of the push button are both inclined from the sides toward the middle, and the bottom surface of the push button and the top of the lock cylinder are both inclined from the middle toward the sides.

[0014] Preferably, the top of the lever has a stepped structure, the top surface of the lever has a first inclined surface, and the bottom of the transmission component has a second inclined surface with the same inclination direction as the first inclined surface.

[0015] The beneficial effects of this utility model are reflected in the fact that, through the reasonable arrangement of the first elastic element, locking block, push button, lock cylinder, second elastic element, transmission element, and lever, in the unlocked state, simply moving the lever rotates the combination wheel to change the combination. After confirming the combination, moving the lever back achieves greater convenience and autonomy. This solves the problems of inconvenience and high cost associated with changing combinations in traditional mechanical and electronic locks. Furthermore, by inserting the bolt into the slot and engaging it with the limiting protrusion, connecting the main lock body and the secondary lock body, the bolt is encased in the slot, reducing the chance of direct external contact, improving anti-pry capability, and enhancing security. Attached Figure Description

[0016] Figure 1 This is one of the perspective views of the adjustable combination lock door latch (main lock body and secondary lock body fastening) provided by this utility model.

[0017] Figure 2 for Figure 1 One of the exploded views of the adjustable combination lock shown (main lock body and secondary lock body are separated).

[0018] Figure 3 for Figure 1 The second exploded view of the adjustable combination lock shown.

[0019] Figure 4 for Figure 1 The third exploded view of the adjustable combination lock shown.

[0020] Figure 5 The second perspective view of the adjustable combination lock door latch (the main lock body and the secondary lock body are fastened together in another way) provided by this utility model.

[0021] Figure 6 for Figure 5 The exploded view of the adjustable combination lock shown (the main lock body and the secondary lock body are separated).

[0022] In the diagram: 1-First housing; 11-First elastic element; 12-Lock block; 121-Slot; 122-Limiting protrusion; 13-Push button; 131-Limiting protrusion; 132-Guide groove; 14-Lock cylinder; 141-Lock protrusion; 15-Second elastic element; 16-Transmission element; 161-Through hole; 162-Second inclined surface; 17-Toggle block; 171-Toggle lever; 18-Reset element; 181-Lock groove; 182-Limiting block; 19-Combination wheel; 191-Vertical groove; 192-Limiting groove; 110-Wheel groove; 111-Toggle piece; 112-Guide strip; 2-Second housing; 21-First notch; 22-Second notch; 23-Combination hole; 24-Toggle hole; 3-Mounting base; 4-Lock tongue; 5-Protrusion. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] Reference Figures 1-6 An adjustable combination lock door latch includes a main lock body and a secondary lock body. The secondary lock body has latches 4 on both sides. The main lock body includes a first housing 1, a second housing 2 fixedly connected to both sides of the first housing 1, and a mounting base 3. The bottom end of the second housing 2 is hinged to the mounting base 3. Between the first housing 1 and the second housing 2, from top to bottom, are arranged a first elastic element 11, a lock block 12, a push button 13, a lock cylinder 14, a second elastic element 15, a transmission element 16, and a lever 17. The lock block 12 has a slot 121, and the top of the slot 121 has a limiting protrusion 12. 2. The lock cylinder 14 is fitted with a reset component 18 and a combination wheel 19 from the inside to the outside. The transmission component 16 has a through hole 161. The bottom of the lock cylinder 14 is also fitted with a through hole 161. When unlocking, rotate the combination wheel 19, enter the correct combination, press the push button 13, the lock cylinder 14 moves down, the lock block 12 moves up, the bolt 4 and the limiting protrusion 122 separate, and the bolt 4 can be moved out of the slot 121. When changing the combination, it is necessary to move the lever 17 in the unlocked state, the transmission component 16 and the reset component 18 move up, and the combination wheel 19 can be moved to change the combination.

[0025] By rationally configuring the first elastic element 11, locking block 12, push button 13, lock cylinder 14, second elastic element 15, transmission element 16, and lever 17, in the unlocked state, simply moving lever 17 rotates the combination wheel 19 to change the combination. After confirming the combination, moving lever 17 back completes the process, achieving greater convenience and autonomy. This solves the problems of inconvenience and high cost associated with changing combinations in traditional mechanical and electronic locks. Furthermore, by inserting the bolt 4 into the slot 121 and engaging it with the limiting protrusion 122, connecting the main lock body and the secondary lock body, the bolt 4 is encased in the slot 121, reducing the chance of direct external contact, improving anti-pry capability, and enhancing security.

[0026] In some embodiments, the inner side of the reset member 18 is provided with a lock groove 181, and the lock cylinder 14 is provided with a lock protrusion 141. When unlocking, the lock protrusion 141 is engaged in the lock groove 181, and when locking, the lock protrusion 141 and the lock groove 181 are misaligned.

[0027] Reference Figure 3-4 The design of the locking protrusion 141 being engaged in the lock groove 181 ensures that the lock can only be opened normally when the password is entered correctly and the locking protrusion 141 is accurately aligned with the lock groove 181.

[0028] Preferably, the outer side of the code wheel 19 is provided with a vertical groove 191, the first housing 1 is provided with a wheel groove 110 and a paddle 111, the code wheel 19 is installed in the wheel groove 110, and one end of the paddle 111 protrudes and abuts against the code wheel 19.

[0029] Reference Figure 4 The vertical groove 191 and the lever 111 work together to limit the rotation range of the password wheel 19. Different password symbols are typically provided on the outer side of the password wheel 19, with a vertical groove 191 between adjacent symbols. The lever 111 is elastic; when the password wheel 19 is rotated, the protruding end of the lever 111 sinks into the vertical groove 191, giving the user a physical signal of a pause, indicating that the password wheel 19 has rotated the range of one password symbol. This avoids password input errors due to excessive or insufficient rotation, significantly improving the accuracy of password input.

[0030] Preferred, refer to Figure 4 The inner top of the password wheel 19 is provided with a limiting groove 192, and the outer top of the reset piece 18 is provided with a limiting block 182. The limiting block 182 can be inserted into the limiting groove 192.

[0031] Reference Figure 3-4When the dial 17 is turned, the transmission component 16 and the reset component 18 move upward, and the limiting groove 192 and the limiting block 182 separate, allowing the code wheel 19 to be turned to modify the code. After modification, the dial 17 is turned back, and under the elastic force of the second elastic component 15, the reset component 18 moves downward, and the limiting block 182 is inserted into the limiting groove 192. At this time, if the code wheel 19 is turned, the reset component 18 rotates with the code wheel 19. Through the design of the limiting groove 192 and the limiting block 182, the connection and precise alignment between the code wheel 19 and the reset component 18 are achieved.

[0032] In some embodiments, the second housing 2 is provided with a first notch 21, the locking block 12 is located on both sides of the first notch 21, the slot 121 is connected to the first notch 21, the secondary lock body is provided with a protrusion 5, the locking tongue 4 is located on both sides of the protrusion 5, and when locked, the protrusion 5 is located inside the first notch 21.

[0033] Reference Figure 4 By setting the protrusion 5 and the first notch 21, the protrusion 5 of the secondary lock body can accurately enter the first notch 21 when locking, ensuring precise cooperation between the lock block 12 and the protrusion 5. This helps improve the reliability and accuracy of locking and avoids locking failure due to misalignment.

[0034] In some embodiments, the second housing 2 has second notches 22 on both sides, and the push button 13 is exposed through the second notches 22. The push button 13 has a limiting protrusion 131 on one side, and the width of the limiting protrusion 131 is smaller than the width of the second notch 22.

[0035] Reference Figure 2 and Figure 4 The design of the second notch 22 exposes part of the push button 13, allowing users to operate the push button 13 directly, thus improving the ease of operation. The width of the limiting protrusion 131 is smaller than the width of the second notch 22, allowing the push button 13 to move freely within a certain range, but without completely disappearing into the second housing 2 from the second notch 22, thus preventing the push button 13 from moving excessively.

[0036] Preferably, the first housing 1 is provided with a guide bar 112, and the push button 13 is provided with a guide groove 132, with the guide bar 112 being engaged inside the guide groove 132.

[0037] Reference Figure 4 The guide bar 112 is engaged in the guide groove 132, which restricts the movement direction of the push button 13, so that the push button 13 can only move linearly along the direction of the guide bar 112, thus preventing the push button 13 from deviating during the movement.

[0038] In some embodiments, the second housing 2 is provided with a password hole 23, and the password wheel 19 corresponds one-to-one with the password hole 23; the second housing 2 is provided with a dial hole 24, and the dial lever 171 is exposed to the second housing 2 through the dial hole 24.

[0039] Reference Figure 2 and Figure 4 The combination lock 23 provides a clear operating position for each combination wheel 19. Users can directly rotate the corresponding combination wheel 19 through the combination lock 23, ensuring that each combination wheel 19 can be adjusted independently and accurately, reducing the possibility of accidental activation. The combination lock 23 and the dial 24 not only provide operational convenience but also reduce the shaking of the combination wheels 19 and the dial 171 during operation, ensuring they are always in the correct position.

[0040] In some embodiments, the bottom surface of the lock block 12 and the top surface of the push button 13 are both inclined from the sides toward the middle, and the bottom surface of the push button 13 and the top sides of the lock cylinder 14 are both inclined from the middle toward the sides.

[0041] Reference Figure 3 When push button 13 is pressed, the push block presses against lock block 12 and lock cylinder 14. Since the bottom surface of lock block 12 and the top surface of push button 13 are both inclined from the sides towards the center, lock block 12 moves upwards. Conversely, since the bottom surface of push button 13 and the top sides of lock cylinder 14 are both inclined from the center towards the sides, lock cylinder 14 moves downwards, thus unlocking the lock. Furthermore, the inclined design prevents push button 13 from jamming during movement.

[0042] In some embodiments, the top of the lever 17 is a stepped structure, the top surface of the lever 17 is provided with a first inclined surface, and the bottom of the transmission member 16 is provided with a second inclined surface 162 with the same inclination direction as the first inclined surface.

[0043] Reference Figure 3-4 Since the bottom of the lock cylinder 14 has a through hole 161 on the transmission component 16, when the user moves the lever 171, the transmission component 16 moves up and down with the left and right movement of the lever 17. Since the first inclined surface and the second inclined surface 162 have the same inclination direction, the friction between the transmission component 16 and the lever 17 is reduced, ensuring that the transmission component 16 moves smoothly on the lever 17.

[0044] In the description of the embodiments of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "center," "top," "bottom," "top," "bottom," "inner," "outer," "inner side," and "outer side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. "Inner side" refers to the interior or enclosed area or space. "Outer perimeter" refers to the area surrounding a specific component or specific area.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable combination lock door latch, comprising: The lock comprises a main lock body and a secondary lock body. The secondary lock body has latches on both sides. The main lock body includes a first housing and a second housing and a mounting base fixedly connected to both sides of the first housing. The bottom end of the second housing is hinged to the mounting base. The lock body is characterized by the following features: a first elastic element, a lock block, a push button, a lock cylinder, a second elastic element, a transmission element, and a lever are arranged sequentially from top to bottom between the first housing and the second housing; the lock block has a slot, and the top of the slot has a limiting protrusion; a reset element and a combination wheel are arranged sequentially from the inside to the outside of the lock cylinder; the transmission element has a through hole; and the bottom of the lock cylinder has a through hole.

2. The adjustable combination lock door latch according to claim 1, characterized in that: The inner side of the reset component is provided with a lock groove, and the lock cylinder is provided with a lock protrusion. When unlocking, the lock protrusion is locked in the lock groove, and when locking, the lock protrusion and the lock protrusion are misaligned.

3. The adjustable combination lock door latch according to claim 2, characterized in that: The outer side of the cipher wheel is provided with a vertical groove, the first housing is provided with a wheel groove and a paddle, the cipher wheel is installed in the wheel groove, and one end of the paddle protrudes and abuts against the cipher wheel.

4. An adjustable combination lock door latch according to claim 2 or 3, characterized in that: The inner top of the password wheel is provided with a limiting groove, and the outer top of the reset component is provided with a limiting block, which can be inserted into the limiting groove.

5. An adjustable combination lock door latch according to claim 1, characterized in that: The second housing has a first notch, the locking blocks are located on both sides of the first notch, the slot and the first notch are connected, the secondary lock body has a protrusion, the lock tongue is located on both sides of the protrusion, and when locked, the protrusion is located inside the first notch.

6. An adjustable combination lock door latch according to claim 1, characterized in that: The second housing has second notches on both sides, and the push button is exposed outside the second housing through the second notches. A limiting protrusion is provided on one side of the push button, and the width of the limiting protrusion is smaller than the width of the second notch.

7. An adjustable combination lock door latch according to claim 6, characterized in that: The first housing is provided with a guide bar, and the push button is provided with a guide groove, with the guide bar being engaged inside the guide groove.

8. An adjustable combination lock door latch according to claim 1, characterized in that: The second housing is provided with a combination lock hole, and the combination lock wheel and the combination lock hole correspond one-to-one; the second housing is provided with a dial hole, and the dial rod is exposed outside the second housing through the dial hole.

9. An adjustable combination lock door latch according to claim 1, characterized in that: The bottom surface of the lock block and the top surface of the push button are both inclined from both sides towards the middle, and the bottom surface of the push button and the top of the lock cylinder are both inclined from the middle towards both sides.

10. An adjustable combination lock door latch according to claim 1, characterized in that: The top of the lever has a stepped structure, the top surface of the lever has a first inclined surface, and the bottom of the transmission component has a second inclined surface with the same inclination direction as the first inclined surface.

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