Coded lock
By using a hidden design password disc rotor shaft in the mechanical password lock, the problem of easy damage to the existing lock password disc rotor shaft is solved, and the security performance of the lock is improved.
Patent Information
- Application Number
- CN202421514904.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The cipher disc shaft of existing mechanical cipher locks is easily damaged by knocking, resulting in insufficient security performance.
The password disc rotor shaft adopts a hidden design, and the structural design of the lock body makes the rotor shaft less likely to be damaged by knocking, increasing the protection performance of the lock.
It effectively prevents damage to the password disc shaft, improves the security performance of the lock, making it more difficult to be turned on illegally.
Smart Images
Figure CN222759565U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to lock technology, in particular to a password lock. Background Art
[0002] A combination lock is a lock that is set by setting a combination dial. This type of combination lock is entered by entering a password. When the password is correct, the locking device will release the bolt, thereby achieving the effect of opening the lock without a key. Combination locks are divided into electronic combination locks and mechanical combination locks. Here we take the mechanical combination lock as the direction. This type of mechanical combination lock enters the password by turning the combination dial.
[0003] The current horizontal opening combination lock has the problem of weak protection against destructive opening, such as the patent "201811435249.X-A giant combination lock". The lock tongue rod of this lock extends out of the lock body. Due to the need to set and change the password, there is space inside the lock body for the axial movement of the password disk shaft. This structure destroys the gear structure assembled on the lock tongue rod and the combination disk by knocking on the part of the lock tongue rod exposed outside the lock body. After the locking device fails, the lock bolt can be opened.
[0004] Therefore, in view of the above-mentioned problem of the combination lock, it is necessary to modify the structure of the combination disk shaft so that the combination disk shaft is not easily damaged by knocking. Utility Model Content
[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide a combination lock, the combination disk shaft of the device adopts a hidden design and is not easy to be damaged, so the security performance of the lock is better.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A combination lock comprises a lock body, a lock cylinder, a movable lock tongue rod, a rotating card set, a combination dial and an elastic member;
[0008] The lock body includes a horizontal columnar space and a vertical columnar space, wherein the horizontal columnar space is opened from the upper left wall of the lock body, and the horizontal columnar space extends rightward and penetrates to the right side of the upper right wall; the vertical columnar space is opened on the right side of the lock body, and the vertical columnar space is connected to the through hole of the upper right wall from the lower end of the lock body upward;
[0009] The lock body further comprises a side wall groove and a side partition wall, a plurality of the side wall grooves are arranged at intervals on the right side of the lock body, a solid part between the side wall grooves is a side partition wall, the vertical column-shaped space passes through the side wall grooves and the side partition wall, a side wall hole wall slide groove is located on the inner wall of the vertical column-shaped space, and a plurality of side wall hole wall slide grooves are in a connected state;
[0010] The movable lock tongue rod is installed in the vertical column-shaped space in a socket-jointed manner, the rotating sleeve is sleeved on the movable lock tongue rod, and the rotating sleeve is constrained by a retaining spring on the movable lock tongue rod; the password dial is sleeved on the outer wall of the rotating sleeve, and the password dial is accommodated in the side wall groove; when the movable lock tongue rod is in a locked state, the rotating sleeve slider is staggered with the side wall hole wall slide groove, and the rotating sleeve block cannot slide with the lower wall hole wall slide groove; when the movable lock tongue rod is in a released state, the through-hole plate slot of the password dial drives the rotating sleeve slider to align the rotating sleeve slider with the side wall hole wall slide groove, the rotating sleeve slides along the side wall hole wall slide groove, and the movable lock tongue rod slides along the vertical column-shaped space synchronously;
[0011] The lock column is installed in the horizontal column space by a socket-jointed manner. The lock column includes a first slot. When the lock column is in a locked state, the first slot is aligned with the upper end opening of the vertical column space. A ball is arranged in the vertical column space. The ball is accommodated in the first slot and the vertical column space, and the movable lock tongue rod abuts against the bottom of the ball.
[0012] The elastic member is arranged at the lower end of the vertical column-shaped space, and the lower end of the movable locking tongue rod is installed on the elastic member.
[0013] Preferably, the lock column is further provided with a first modification hole, which runs from one side of the lock column to the other side; a second modification hole is opened at the top of the upper right wall, which is located directly above the vertical columnar space, and the second modification hole is connected to the horizontal columnar space directly below;
[0014] When the lock cylinder is in a locked state, the first modification hole is located on the left side of the second modification hole. When modifying the password, the lock cylinder is pulled out to make the first modification hole overlap with the second modification hole, and the ball and the movable lock tongue rod are pushed by a tool.
[0015] Preferably, it further comprises a second card slot, wherein the second card slot is located at the front end of the lock column;
[0016] A ball screw is embedded in the inner wall of the upper right wall through hole, and the ball screw is located at the left end of the upper right wall through hole.
[0017] Preferably, the left side of the first card slot is a sliding side, and the right side of the first card slot is a blocking side;
[0018] The right side of the second card slot is a sliding side, and the left side of the second card slot is a blocking side;
[0019] When the lock column is in a locked state, the first slot is located in the hole of the upper left wall, the second slot is located in the hole of the upper right wall, the right end of the lock column is the handle, and the right end of the lock column extends from the right side of the hole of the upper right wall.
[0020] Furthermore, the diameter of the upper opening of the vertical columnar space is smaller than the diameter of the retaining spring, and the diameter of the upper opening of the vertical columnar space is larger than the diameter of the ball.
[0021] Furthermore, a cavity is provided in the lower right portion of the lock body.
[0022] One of the above technical solutions includes the following beneficial effects: 1. When the lock column of the present solution is locked, it is against the hole in the upper left wall and has no travel to the left. At this time, the lock column cannot be damaged by external force to smash it inward, because only by pulling the lock column to the right can the force be applied to the active lock tongue rod, but the equipment required to pull the lock column back to apply the force is more complicated than hammering, so the lock column setting method of the present solution can effectively prevent damage and improve the protection effect; 2. When the active lock tongue rod of the present solution is in the locked state, there is no exposed part, so it is impossible to directly impact the active lock tongue rod, and this setting method also effectively protects the active lock tongue rod. This structure makes it impossible for the active lock tongue rod to find a good point of force in the locked state, and it is not easy to damage the rotating sleeve on the active lock tongue rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0024] Figure 2 It is a schematic cross-sectional view of the overall structure of an embodiment of the utility model;
[0025] Figure 3 It is a structural schematic diagram of a lock body of an embodiment of the utility model;
[0026] Figure 4 It is a longitudinal half-section schematic diagram of a movable bolt rod of an embodiment of the utility model;
[0027] Figure 5 The utility model is a schematic cross-sectional view of a movable bolt rod according to an embodiment of the utility model.
[0028] Among them: lock body 100, upper left wall 110, upper right wall 120, second modification hole 121, ball screw 122, horizontal columnar space 130, vertical columnar space 140, side wall groove 141, side partition wall 142, side wall hole wall slide groove 143, lock column 200, first card slot 210, first modification hole 220, second card slot 230, movable lock tongue rod 300, rotating card set 400, and password dial 500. DETAILED DESCRIPTION
[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0030] like Figure 1-5 As shown, a combination lock includes a lock body 100, a lock cylinder 200, a movable lock tongue rod 300, a rotating card set 400, a combination dial 500 and an elastic member;
[0031] The lock body 100 includes a transverse columnar space 130 and a vertical columnar space 140. The transverse columnar space 130 is opened from the upper left wall 110 of the lock body 100, and the transverse columnar space 130 extends rightward and penetrates to the right side of the upper right wall 120; the vertical columnar space 140 is opened on the right side of the lock body 100, and the vertical columnar space 140 is connected to the through hole of the upper right wall 120 from the lower end of the lock body 100 upward;
[0032] The lock body 100 further includes a side wall groove 141 and a side partition wall 142. A plurality of the side wall grooves 141 are arranged at intervals on the right side of the lock body 100. The solid part between the side wall grooves 141 is the side partition wall 142. The vertical column-shaped space 140 passes through the side wall grooves 141 and the side partition wall 142. The side wall hole wall slide grooves 143 are located on the inner wall of the vertical column-shaped space 140. A plurality of the side wall hole wall slide grooves 143 are in a connected state.
[0033] The movable lock tongue rod 300 is installed in the vertical column space 140 with a socket-and-spigot fit, and the rotating sleeve card 400 is sleeved on the movable lock tongue rod 300, and the rotating sleeve card 400 is constrained by the movable lock tongue rod 300 by a retaining spring; the password dial 500 is sleeved on the outer wall of the rotating sleeve card 400, and the password dial 500 is accommodated in the side wall groove 141; when the movable lock tongue rod 300 is in a locked state, the sliding block of the rotating sleeve card 400 is offset from the position of the side wall hole wall slide groove 143, and the rotating sleeve card 400 block cannot slide with the lower wall hole wall slide groove; when the movable lock tongue rod 300 is in a released state, the through-hole plate card groove of the password dial 500 drives the sliding block of the rotating sleeve card 400, so that the sliding block of the rotating sleeve card 400 is aligned with the side wall hole wall slide groove 143, the rotating sleeve card 400 slides along the side wall hole wall slide groove 143, and the movable lock tongue rod 300 slides along the vertical column space 140 synchronously;
[0034] The lock cylinder 200 is installed in the horizontal columnar space 130 by socket fitting. The lock cylinder 200 includes a first slot 210. When the lock cylinder 200 is in a locked state, the first slot 210 is aligned with the upper end opening of the vertical columnar space 140. A ball is arranged in the vertical columnar space 140. The ball is accommodated in the first slot 210 and the vertical columnar space 140. The movable lock tongue rod 300 abuts against the bottom of the ball.
[0035] The elastic member is disposed at the lower end of the vertical columnar space 140 , and the lower end of the movable locking tongue rod 300 is mounted on the elastic member.
[0036] The lock column 200 of the present solution is against the hole of the upper left wall 110 when locked, and has no travel to the left. At this time, the lock column 200 cannot be damaged by external force to smash it inward, because only by pulling the lock column 200 to the right can the force be applied to the active lock tongue rod 300, but the equipment required for pulling the lock column 200 back to apply the force is more complicated than hammering. Therefore, the arrangement of the lock column 200 of the present solution can effectively prevent damage and improve the protection effect; the active lock tongue rod 300 of the present solution has no exposed part when the lock is in the locked state, so it is impossible to directly impact the active lock tongue rod 300. This arrangement also effectively protects the active lock tongue rod 300. This structure makes it impossible for the active lock tongue rod 300 to find a good point of force in the locked state, and it is not easy to damage the rotating sleeve 400 on the active lock tongue rod 300.
[0037] The lock column 200 is further provided with a first modification hole 220, which runs from one side of the lock column 200 to the other side; the top of the upper right wall 120 is provided with a second modification hole 121, which is located directly above the vertical column space 140, and the second modification hole 121 is connected to the horizontal column space 130 directly below;
[0038] When the lock cylinder 200 is in a locked state, the first modification hole 220 is located on the left side of the second modification hole 121. When modifying the password, the lock cylinder 200 is pulled out to overlap the first modification hole 220 and the second modification hole 121, and the ball and the movable lock tongue rod 300 are pushed by a tool.
[0039] When changing the password, the lock cylinder 200 is opened to make the first modification hole 220 overlap with the second modification hole 121, and a tool is used to push the movable lock tongue rod 300 to complete the separation and overlap of the rotating card set 400 and the password dial 500.
[0040] The second card slot 230 is located at the front end of the lock cylinder 200.
[0041] A ball screw 122 is embedded in the inner wall of the through hole of the upper right wall 120 , and the ball screw 122 is located at the left end of the through hole of the upper right wall 120 .
[0042] The wave screw 122 is used to constrain the second locking slot 230 so that the locking column 200 is withdrawn from the transverse columnar space 130 .
[0043] In addition, the left side of the first card slot 210 is a sliding side, and the right side of the first card slot 210 is a blocking side;
[0044] The right side of the second card slot 230 is a sliding side, and the left side of the second card slot 230 is a blocking side;
[0045] When the lock column 200 is in the locked state, the first slot 210 is located in the hole of the upper left wall 110, the second slot 230 is located in the hole of the upper right wall 120, and the right end of the lock column 200 is the handle portion, and the right end of the lock column 200 extends from the right side of the hole of the upper right wall 120.
[0046] The first slot 210 needs to be pulled out to the right, so the left side is the sliding side for easy contact with the ball bearing. The second slot 230 needs to be prevented from sliding out and needs to form a blocking structure with the ball bearing screw 122, so the left side of the second slot is the blocking side.
[0047] In addition, the diameter of the upper opening of the vertical columnar space 140 is smaller than the diameter of the retaining spring, and the diameter of the upper opening of the vertical columnar space 140 is larger than the diameter of the ball.
[0048] This structure is used to restrict the position of the movable bolt rod 300 moving upward.
[0049] In addition, a cavity is defined in the lower right portion of the lock body 100 .
[0050] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.
Claims
1. A combination lock, comprising a lock body, a lock cylinder, a movable lock tongue rod, a rotating card set, a combination dial and an elastic member; It is characterized in that The lock body includes a horizontal columnar space and a vertical columnar space, wherein the horizontal columnar space is opened from the upper left wall of the lock body, and the horizontal columnar space extends rightward and penetrates to the right side of the upper right wall; the vertical columnar space is opened on the right side of the lock body, and the vertical columnar space is connected to the through hole of the upper right wall from the lower end of the lock body upward; The lock body further comprises a side wall groove and a side partition wall, a plurality of the side wall grooves are arranged at intervals on the right side of the lock body, a solid part between the side wall grooves is a side partition wall, the vertical column-shaped space passes through the side wall grooves and the side partition wall, a side wall hole wall slide groove is located on the inner wall of the vertical column-shaped space, and a plurality of side wall hole wall slide grooves are in a connected state; The movable lock tongue rod is installed in the vertical column-shaped space in a socket-jointed manner, the rotating sleeve is sleeved on the movable lock tongue rod, and the rotating sleeve is constrained by a retaining spring on the movable lock tongue rod; the password dial is sleeved on the outer wall of the rotating sleeve, and the password dial is accommodated in the side wall groove; when the movable lock tongue rod is in a locked state, the rotating sleeve slider is staggered with the side wall hole wall slide groove, and the rotating sleeve block cannot slide with the lower wall hole wall slide groove; when the movable lock tongue rod is in a released state, the through-hole plate slot of the password dial drives the rotating sleeve slider to align the rotating sleeve slider with the side wall hole wall slide groove, the rotating sleeve slides along the side wall hole wall slide groove, and the movable lock tongue rod slides along the vertical column-shaped space synchronously; The lock column is installed in the horizontal column space by a socket-jointed manner. The lock column includes a first slot. When the lock column is in a locked state, the first slot is aligned with the upper end opening of the vertical column space. A ball is arranged in the vertical column space. The ball is accommodated in the first slot and the vertical column space, and the movable lock tongue rod abuts against the bottom of the ball. The elastic member is arranged at the lower end of the vertical column-shaped space, and the lower end of the movable locking tongue rod is installed on the elastic member.
2. The combination lock according to claim 1, characterized in that: The lock column is also provided with a first modification hole, which runs from one side of the lock column to the other side; a second modification hole is opened on the top of the upper right wall, and the second modification hole is located directly above the vertical columnar space, and the second modification hole is connected to the horizontal columnar space directly below; When the lock cylinder is in a locked state, the first modification hole is located on the left side of the second modification hole. When modifying the password, the lock cylinder is pulled out to make the first modification hole overlap with the second modification hole, and the ball and the movable lock tongue rod are pushed by a tool.
3. The combination lock according to claim 2, characterized in that: It also includes a second card slot, which is located at the front end of the lock column and has a second card slot; A ball screw is embedded in the inner wall of the upper right wall through hole, and the ball screw is located at the left end of the upper right wall through hole.
4. The combination lock according to claim 3, characterized in that: The left side of the first card slot is a sliding side, and the right side of the first card slot is a blocking side; The right side of the second card slot is a sliding side, and the left side of the second card slot is a blocking side; When the lock column is in a locked state, the first slot is located in the hole of the upper left wall, the second slot is located in the hole of the upper right wall, the right end of the lock column is the handle, and the right end of the lock column extends from the right side of the hole of the upper right wall.
5. The combination lock according to claim 1, characterized in that: The diameter of the upper opening of the vertical columnar space is smaller than the diameter of the retaining spring, and the diameter of the upper opening of the vertical columnar space is larger than the diameter of the ball.
6. The combination lock according to claim 1, characterized in that: A cavity is formed at the lower right part of the lock body.