Combination lock with easy reset

Abstract

The present invention provides a combination lock with a convenient reset of the combination, comprising a combination box provided with a combination wheel assembly and a reset mechanism, wherein the combination wheel of the combination wheel assembly is coaxially provided with a combination wheel gear with a notch, and the reset mechanism comprises a sliding cover, a disc gear provided on the combination box, a bevel gear meshing with the disc gear, and external teeth coaxially provided with the bevel gear, wherein the disc gear meshes with the combination wheel gear, wherein the sliding cover is connected to the combination box for linear reciprocating movement, and a toothed structure is provided on the sliding cover. After the sliding cover is connected to the combination box, the toothed structure on the sliding cover meshes with the external teeth on the bevel gear, pushing the sliding cover to move until the driving disc gear and the notch of the combination wheel gear form idle rotation, thereby causing the combination wheel to reset to zero. The present invention drives the combination wheel to reset to zero by sliding the sliding cover, thereby achieving the purpose of easy reset. At the same time, since the reset operation is very labor-saving, the product life can be extended.

Description

Technical Field

[0001] The invention belongs to the technical field of password locks, and in particular relates to a password lock with a password that is easy to reset to zero. Background Art

[0002] Currently, combination locks with combination wheels on the market require manual resetting of the combination to hide the correct combination after the correct combination is dialed to unlock. This requires manually resetting the combination wheels one by one, which is very troublesome. Publication No. CN102011513 A discloses a combination lock reset device. This reset relies on rotating a knob to drive a reset shaft, which ultimately drives the combination wheel to reset to zero. This reset structure does not save effort during the reset operation. Rotating the knob requires overcoming excessive friction between gears, making the operation very laborious. Furthermore, since most products are made of plastic, the various transmission parts are prone to wear or even breakage when the knob is rotated with difficulty, resulting in a short service life. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a combination lock whose password can be easily reset to zero.

[0004] The present invention is achieved through the following technical solutions:

[0005] A combination lock with a password that is easy to reset to zero includes a combination box provided with a combination wheel assembly and a reset mechanism, wherein the combination wheel of the combination wheel assembly is coaxially provided with a combination wheel gear with a notch, and the reset mechanism includes a sliding cover, a disc gear provided on the combination box, a bevel gear meshing with the disc gear, and external teeth coaxially provided with the bevel gear, wherein the disc gear meshes with the combination wheel gear, wherein the sliding cover is connected to the combination box for linear reciprocating movement, and the sliding cover is provided with a toothed structure. After the sliding cover is connected to the combination box, the toothed structure on the sliding cover meshes with the external teeth on the bevel gear, and the sliding cover is pushed to move until the driving disc gear and the notch of the combination wheel gear form idling, so that the combination wheel is reset to zero.

[0006] Preferably, the disc gears are divided into two groups, which are respectively arranged on both sides of the password wheel, and the disc gears in each group are coaxially arranged.

[0007] Preferably, the password box has a through slot running vertically through it, the sliding cover is provided with a latching protrusion that is latched into the through slot, the latching protrusion has a latching portion protruding to one side, and the corresponding through slot has a wall groove that limits the directional sliding of the latching portion.

[0008] Preferably, the toothed structure on the sliding cover is provided on the latching protrusion, and the outer teeth of the bevel gear at least partially extend into the through slot of the cipher box.

[0009] Preferably, the password box includes a base and an upper cover, the upper cover is fixedly connected to the base, and the through slot is provided on the upper cover.

[0010] Preferably, the sliding cover is provided with a stop bulge, and the corresponding password box is provided with a positioning piece, and one end of the positioning piece extends to the range of the movement track of the sliding cover stop bulge.

[0011] Preferably, it also includes an unlocking knob, which is linked to a turntable. The turntable has at least one recessed portion in its circumference. A rotating shaft disk with a locking element is connected to the lower end of the turntable. Locking is achieved by rotating the locking element. The female end of the password wheel assembly is placed in the recessed portion of the turntable. When the password is correct, the turntable of the unlocking knob is not restricted by the female end and can be freely rotated to unlock.

[0012] Preferably, the sliding cover has at least a shielding portion for shielding a portion of the password wheel.

[0013] The beneficial effects of the present invention are as follows: the present invention drives the password wheel to return to zero by sliding the sliding cover, thereby achieving the purpose of easy zeroing. At the same time, since the zeroing operation is very labor-saving, and since there is no safety risk caused by forgetting the password and not returning to zero, the life of the product can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A perspective view of the entire present invention;

[0015] Figure 2 It is a structural exploded view of the present invention;

[0016] Figure 3 Schematic diagram of the internal structure of the present invention;

[0017] Figure 4 Schematic diagram of the connection structure of the gear part of the present invention;

[0018] Figure 5 This is a structural diagram of the present invention when the sliding cover is in an open state. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the embodiments.

[0020] Example

[0021] like Figure 1-Figure 5The present invention relates to a combination lock with a password that is easy to reset to zero. The combination lock can be used for various door and cabinet locks, including a combination box provided with a combination wheel assembly and a reset mechanism. The combination box is a rectangular parallelepiped structure. In this embodiment, the combination box includes a base 1 and an upper cover 2. The upper cover 2 is fixed to the base 1 by screws. The combination wheel of the combination wheel assembly is coaxially provided with a combination wheel gear 4 with a notch 41. The notch means that the gear ring is incomplete, not a full circle of gears. The reset mechanism includes a sliding cover 3, a disc gear 5 provided on the combination box, a bevel gear 6 meshing with the disc gear 5, and a bevel gear 6 meshing with the bevel gear 6. The outer teeth 61 of the wheel 6 are coaxially arranged. In this embodiment, the disc gear 5 and the bevel gear 6 are both movably connected to the base 1. The disc gear 5 meshes with the code wheel gear 4. In this embodiment, the disc gear 5 is provided with teeth meshing with the code wheel and the bevel gear 6 on both sides. The sliding cover 3 is connected to the code box for linear reciprocating movement. The sliding cover 3 is provided with a toothed structure. After the sliding cover 3 is connected to the code box, the toothed structure on the sliding cover 3 meshes with the outer teeth 61 on the bevel gear 6, pushing the sliding cover 3 to move until the disc gear 5 and the code wheel gear 4 are in a gap and idle rotation occurs, causing the code wheel to return to zero. The sliding cover 3 has at least a shielding portion that blocks part of the code wheel. The specific structure of the code wheel assembly is prior art and will not be elaborated here. It also includes an unlocking knob 7, which is linked to a turntable 8. The turntable 8 has a recessed portion in its circumference. The lower end of the turntable 8 is connected to a rotating shaft disk 11 with a locking element. Locking is achieved by rotating the locking element. The end of the female row 9 of the password wheel assembly is placed in the recessed portion 81 of the turntable 8. When the password is correct, the turntable 8 of the unlocking knob 7 is not restricted by the female row 9 and can be freely rotated to unlock.

[0022] In order to further reduce resistance, in this embodiment, the disc gear 5 is divided into two groups, which are respectively arranged on both sides of the cipher wheel, and the disc gears 5 of each group are coaxially arranged, and the disc gears 5 on both sides are staggered. For example, the first disc gear 5 of the first group is engaged with the first cipher wheel gear 4, and the first disc gear 5 of the second group is engaged with the second cipher wheel gear 4. This reduces the friction of the disc gears 5 on the same side and also makes the force on both sides of the cipher wheel assembly uniform.

[0023] To enable the sliding cover 3 to slide in a directional manner on the cipher box, this embodiment provides a vertically extending through-slot 21 on the cipher box. The sliding cover 3 is provided with a latching protrusion 31 that engages with the through-slot 21. The latching protrusion 31 has a latching portion 311 protruding to one side, and the corresponding through-slot 21 has a wall groove 211 that restricts the directional movement of the latching portion 311. The toothed structure on the sliding cover 3 is provided on the latching protrusion 31, and the outer teeth 61 of the bevel gear 6 at least partially extend into the through-slot 21 of the cipher box.

[0024] To prevent the sliding cover 3 from sliding excessively and disengaging from the password box, in this embodiment, a stopper protrusion is provided on the sliding cover 3, and a corresponding positioning piece 10 is provided on the password box. One end of the positioning piece 10 extends into the movement trajectory of the stopper protrusion of the sliding cover 3. The stopper protrusion on the sliding cover 3 is provided at both ends. The positioning piece 10 is mounted on the base 1 and extends through the upper cover 2.

[0025] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Simple modifications and substitutions by those skilled in the art without departing from the spirit and scope of the present invention are within the scope of protection of the present invention.

Claims

1. A combination lock with a password that can be easily reset to zero, comprising a combination box with a combination wheel assembly and a reset mechanism, wherein the combination wheel of the combination wheel assembly is coaxially provided with a combination wheel gear with a notch, and characterized in that: The zeroing mechanism includes a sliding cover, a disc gear provided on the password box, a bevel gear meshing with the disc gear, and external teeth coaxially arranged with the bevel gear. The disc gear meshes with the password wheel gear. The sliding cover is connected to the password box for linear reciprocating movement. The sliding cover is provided with a toothed structure. After the sliding cover is connected to the password box, the toothed structure on the sliding cover meshes with the external teeth on the bevel gear, pushing the sliding cover to move until the driving disc gear and the password wheel gear gap form idling, causing the password wheel to return to zero.

2. The combination lock with a password that is easy to reset to zero as claimed in claim 1, characterized in that: The disc gears are divided into two groups, which are respectively arranged on both sides of the cipher wheel, and the disc gears in each group are coaxially arranged.

3. The combination lock with a password that is easy to reset to zero as claimed in claim 2, characterized in that: The password box has a through slot running vertically through it, the sliding cover is provided with a clamping protrusion clamped into the through slot, the clamping protrusion has a clamping part protruding to one side, and the corresponding through slot has a wall groove that limits the directional sliding of the clamping part.

4. The combination lock with a password that can be easily reset to zero as claimed in claim 3, characterized in that: The toothed structure on the sliding cover is arranged on the clamping protrusion, and the outer teeth of the bevel gear at least partially extend into the through groove of the password box.

5. The combination lock with a password that is easy to reset to zero as claimed in claim 4, characterized in that: The password box comprises a base and an upper cover plate, the upper cover plate is fixedly connected to the base, and a through slot is arranged on the upper cover plate.

6. The combination lock with a password that can be easily reset to zero as claimed in claim 4, characterized in that: The sliding cover is provided with a blocking convex, and the corresponding password box is provided with a positioning piece, and one end of the positioning piece extends to the range of the movement track of the sliding cover blocking convex.

7. The combination lock with a password that can be easily reset to zero as claimed in claim 4, characterized in that: It also includes an unlocking knob, which is linked to a turntable. The turntable has at least one recessed portion in its circumference. A rotating shaft disk with a locking element is connected to the lower end of the turntable. Locking is achieved by rotating the locking element. The female end of the password wheel assembly is placed in the recessed portion of the turntable. When the password is correct, the turntable of the unlocking knob is not restricted by the female end and can be freely rotated to unlock.

8. The combination lock with a password that can be easily reset to zero as claimed in claim 4, characterized in that: The sliding cover at least has a shielding portion for shielding a portion of the password wheel.

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