CN115177085A - Mechanical cipher safe - Google Patents

Abstract

The invention discloses a mechanical password safe deposit box, which comprises a lock box seat, an upper cover, a lock gate and password wheel sets, wherein the lock box seat forms a box-shaped structure with an opening on the upper side, the side wall of one end of the upper cover is hinged with one end of the lock box seat, the upper cover can cover or open the opening of the lock box seat, the inner side wall of the other end of the lock box seat is provided with a lock catch structure, the lock gate can be slidably arranged in the upper cover and can be buckled and connected with or disconnected from the lock catch structure, at least two password wheel sets can be rotatably arranged in the upper cover, the upper cover is provided with a windowing structure corresponding to the password wheel sets, the password wheel sets are provided with coaxially rotating eccentric wheels, the outer side surfaces of the circumferences of the eccentric wheels are tightly abutted against the surface of the lock gate, and the outer side surface of a section with a large radius of the eccentric wheels on the password wheel sets can prevent the lock gate from being disconnected from the lock gate structure.

Description

Mechanical password safe

technical field

The invention relates to the technical field of anti-theft, in particular to a mechanical password safe.

Background technique

When people travel, they often need to store car keys, home door lock keys, cards, mobile phones, medicines and other supplies. At present, people carry these items with them, and they need to be scattered in suitcases or carried with them when traveling. The current storage method has the following disadvantages:

1. Carrying these items with you will have an impact on the location of your travels. For some travel occasions where you cannot carry these items with you, you need to go to another storage place to store them, which is very troublesome;

2. These items are very important. When traveling, once these items are accidentally lost, it will bring people a lot of trouble;

3. Because these items are scattered in suitcases or bags, when they need to be used, they often need to be searched, which is time-consuming, laborious, and easily damaged.

Therefore, when people travel, how to properly take care of these important items has become a headache for people.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned defects, the present invention provides a mechanical password safe, which has a simple structure, can safely store important items carried with you, avoid loss, and does not require electricity to ensure normal use when going out.

The technical scheme adopted by the present invention in order to solve the technical problem: a mechanical password safe, comprising a lock box seat, an upper cover, a lock gate and a combination wheel group, the lock box seat forms a box-shaped structure with an upper side opening, and the upper The side wall of one end of the cover is hingedly connected to the side wall of one end of the lock box seat. The upper cover can be turned around the hinge shaft to cover or open the opening of the lock box seat. The inner side wall of the other end of the lock box seat is provided with a locking structure. It is installed on the inner side of the upper cover at a fixed distance, and the lock gate can be slidably connected to or released from the lock structure on the inner side wall of the lock box seat. At least two code wheel groups are rotatably installed inside the upper cover, and the A window structure corresponding to each cipher wheel group is formed on the cover. The evenly distributed cipher marks on the outer side wall of the circumference of the cipher wheel can be exposed to the outside of the upper cover through the window structure of the upper cover. There are coaxially rotating eccentric wheels. The outer surface of the eccentric wheel on each cipher wheel group is tightly abutted on the side surface of the lock that moves in the direction of tripping from the lock structure. The eccentric wheel on the cipher wheel group has a larger radius. The outer circumferential surface can prevent the lock from moving in the direction of release from the lock structure.

As a further improvement of the present invention, a reset elastic member is also provided in the upper cover, and the reset elastic member provides the lock with an elastic retaining force to move in the direction of engaging with the locking structure.

As a further improvement of the present invention, the lock is provided with a spring slot, one end of the reset elastic member is inserted into the spring slot, and one end of the reset elastic member is pressed against the bottom surface of the spring slot, and the inner side of the upper cover is inserted into the spring slot. A spring stop convex surface is arranged on the wall, and the other end of the reset elastic member is tightly pressed against the spring stop convex surface on the upper cover.

As a further improvement of the present invention, the lock gate is provided with an elongated hole along its sliding direction, the upper cover is provided with a threaded hole opposite to the elongated hole, and the threaded hole of the upper cover is threadedly connected There is a connecting screw, the connecting screw can be relatively slidably inserted into the elongated hole of the lock, and the head of the connecting screw stops on the side surface of the lock that faces away from the threaded hole.

As a further improvement of the present invention, a control board is also provided, the control board can be moved within a certain range and is installed in the upper cover, and one end of the control board along the direction of its movement is pressed against the side wall of the lock gate that moves toward the unlocking direction The other end of the control board in the direction of its movement abuts against the outer circumference of the eccentric wheel of all cipher wheel groups.

As a further improvement of the present invention, one end of the control board is installed on the upper cover, the other end of the control board can swing a set angle relative to one end of the control board, and the side wall surface of the lock shutter that moves in the unlocking direction is provided with a concave shelter. Position hole, the other end of the control board swings to be opposite to the side wall surface of the lock gate moving in the unlocking direction or the avoidance hole on the surface, and the side wall of the control board along its swing direction elastically presses against all the cipher wheels on the cipher wheel group. on the outer surface of the eccentric circumference.

As a further improvement of the present invention, one end of the control board is hinged on the upper cover, and a control board reset elastic member is also provided. The surface of the eccentric side of the wheel set.

As a further improvement of the present invention, the lock structure on the inner side wall of the lock box seat is a concave slot or a boss protruding from the edge of the side wall of the opening of the lock box seat, and the lock gate can be along the depth of the inner recess slot. Sliding in the direction or the extension direction of the boss, one end of the lock gate is provided with a lock tongue, and the lock tongue can be inserted into the concave slot and stop on the upper side wall of the inner slot or inserted under the boss. side and stop on the boss.

As a further improvement of the present invention, the two side walls of the lock tongue along the rotation direction of the upper cover are inclined or arc structures, and the outer surface of the upper cover is also provided with a T-shaped groove structure whose opening size is smaller than the inner size. The groove structure is just opposite to the cipher wheel group, the window structure on the upper cover is located on the bottom surface of the T-shaped groove structure, and the side wall of the opening of the T-shaped groove structure is formed with a concave chute, and the sliding groove is formed on the side wall of the opening of the T-shaped groove structure. A password cover plate is slidably installed in the groove, the password cover plate can slide along the chute to open or close the opening of the T-shaped groove structure, and a pull handle structure for manual pulling is formed on the password cover plate.

As a further improvement of the present invention, the cipher wheel set includes a mandrel, an inner cipher wheel, an outer cipher wheel, a cipher elastic piece, a cipher number adjustment piece and a cipher wheel positioning elastic piece, and the mandrel can slide axially for a set distance. Installed in the upper cover, the outer side wall of one end of the mandrel is provided with a radially outwardly convex blocking ring, one end of the password adjustment piece protrudes from the outside of the upper cover, and the other end of the password adjustment piece is sleeved on the outside of one end of the mandrel, and stops. Block on the end face of one end of the baffle ring, at least two inner cipher wheels are sequentially sleeved on the outside of the mandrel, the inner cipher wheel forms a stepped structure with one end diameter smaller than the other end diameter, the larger diameter end forms an eccentric wheel, and its small diameter end circles A section of spline structure is formed on the root of the outer side wall, the outer cipher wheel is sleeved on the outer side of one end with a small diameter of the inner cipher wheel, and the inside of the outer cipher wheel is formed with a key slot matching the spline structure on the inner cipher wheel, each The inner cipher wheel is in close contact in the axial sequence and finally abuts on the other end face of the stop ring at one end of the mandrel. The cipher elastic piece is sleeved on the outside of the other end of the mandrel. On the other end face of the inner cipher wheel at the other end of the shaft, one end of the cipher wheel positioning elastic piece is fixedly installed on the inner side of the inner cover, and the other end of the cipher wheel positioning elastic piece is elastically pressed against the outer surface of each outer cipher wheel circumference.

The beneficial effects of the present invention are: the present invention covers the lock box seat through the upper cover, and forms a closed space with the lock box seat for storing important items such as keys, cards, mobile phones, medicines, etc., and avoids these items from being scattered on the luggage. The upper cover and the lock box seat are buckled and connected through the lock gate and the lock structure, and the lock box seat and the upper cover can be locked and unlocked by setting and inputting the password through the password wheel group, which improves the important Items are stored safely to avoid being stolen, and they are easy to carry with you or fixed in designated locations to facilitate the storage and retrieval of important items. use in the environment.

Description of drawings

1 is an exploded perspective view of the present invention;

Fig. 2 is the front view of the upper cover of the present invention;

Fig. 3 is the sectional view of the open state of the present invention;

4 is a sectional view of the locked state of the present invention;

5 is a schematic diagram of the control panel of the present invention in an unlocked state;

FIG. 6 is a schematic diagram of the control panel of the present invention in a locked state.

Detailed ways

Example: a mechanical password safe, comprising a lock box seat 1, an upper cover 2, a lock gate 3 and a combination wheel set 4, the lock box seat 1 forms a box-like structure with an upper side opening, and one side wall of the upper cover 2 is connected to the lock box. One end side wall of the box seat 1 is hingedly connected, the upper cover 2 can be turned around the hinge shaft to cover or open the opening of the lock box seat 1, the inner side wall of the other end of the lock box seat 1 is provided with a locking structure 14, and the lock gate 3 can be slidably installed. It is installed on the inner side of the upper cover 2 at a fixed distance. The lock gate 3 can be slidably connected with the lock structure 14 on the inner side wall of the lock box seat 1 to be fixedly connected or released. At least two code wheel sets 4 can be rotatably installed on the On the inside of the upper cover 2, a window structure corresponding to each cipher wheel group 4 is formed on the upper cover 2, and the cipher marks evenly distributed on the outer side wall of the circumference of the cipher wheel can be exposed to the upper cover through the window structure of the upper cover 2. 2. Outside, an eccentric wheel that rotates coaxially is formed on the cipher wheel group 4, and the outer surface of the eccentric wheel circumference on each cipher wheel group 4 is tightly abutted against the lock gate 3 moving in the tripping direction with the lock structure 14. On the side surface, the outer surface of the circumference of the eccentric wheel on the combination wheel group 4 with a large radius can prevent the lock gate 3 from moving in the direction of releasing from the lock structure 14 .

When the upper cover 2 covers the opening of the open slot structure of the lock box base 1, a closed storage space is formed between the open slot structure of the lock box base 1 and the upper cover 2 for placing car keys, home door lock keys, After placing the cards, mobile phones, medicines and other supplies, cover the upper cover 2 on the opening of the lock box base 1, and rotate the cipher wheel group 4 to make the eccentric wheel structure on the cipher wheel group 4 rotate with the cipher wheel group 4, so that at least The position of the eccentric wheel structure on a combination wheel group 4 with a large radius is in contact with the lock gate 3, so that the lock gate 3 slides forward and is fastened and fixedly connected with the lock structure 14 on the side wall of the opening groove structure of the lock box base 1. , and then make the upper cover 2 and the lock box seat 1 fixedly connected and positioned. When unlocking is required, only the cipher wheel group 4 needs to be rotated so that the cipher identification of the cipher wheel group 4 exposed through the window opening structure is correct, then the eccentricity of the cipher wheel group 4 is correct. The position of the wheel structure with a small radius is in contact with the lock gate 3, so that the lock gate 3 can slide in the reverse direction, and then the lock structure 14 on the side wall of the opening groove structure of the lock box base 1 is released to realize the unlocking. At this time, the upper The cover 2 is opened, and the items in the lock box seat 1 can be taken. The lock box seat 1 can also be equipped with a hook 6 for hanging on people's clothes or luggage, which is easy to carry. One side wall of the lock box seat 1 is the best An L-shaped structure is formed, and one side wall of the upper cover 2 stops on the two side walls of the L-shaped structure. This structure can limit the opening angle of the upper cover 2, so that the upper cover 2 can be opened and closed within a range of 90 degrees, preventing If the opening and closing angle is too large to cause damage and the items in the box fall, the upper cover 2 can be made into an integrated structure, or can be made into a separate structure, such as the cover plate 5 and the bracket 24 with grooves are fixed and assembled together, two A space for accommodating the lock gate 3 and the combination wheel set 4 is formed between them. This structure is more convenient for the assembly of the lock gate 3 and the combination wheel set 4. At the same time, the lock gate 3 and the combination wheel set 4 are hidden and protected on the cover plate and the bracket. The space formed between them prevents damage.

The upper cover 2 is also provided with a reset elastic member 7 , and the reset elastic member 7 provides the lock shutter 3 with an elastic retaining force to move toward the locking direction with the locking structure 14 . After the elastic member 7 is reset so that the upper cover 2 covers the opening of the lock box base 1, the lock gate 3 is automatically snapped together with the lock structure 14 on the lock box base 1 under the action of elastic force, so as to prevent the user from forgetting to operate the lock gate 3 As a result, the upper cover 2 and the lock box seat 1 fail to be locked, and at the same time, it is avoided that the upper cover 2 and the lock box seat 1 are immediately opened after the password is opened, causing the items in the lock box seat 1 to fall out, resulting in loss or damage.

The lock gate 3 is provided with a spring slot 8, one end of the reset elastic member 7 is inserted into the spring slot 8, and one end of the reset elastic member 7 is pressed against the bottom surface of the spring slot 8, and the inner side of the upper cover 2 The wall is provided with a spring stop convex surface 9 , and the other end of the reset elastic member 7 is pressed against the spring stop convex surface 9 on the upper cover 2 . By arranging the spring slot 8 on the lock gate 3, the direction of the elastic deformation direction of the reset elastic member 7 is realized, and the pressing and positioning of the reset elastic member 7 is realized. The reset elastic member 7 is preferably a spring, and can also be an elastic rubber pad or Shrapnel, etc.

The lock gate 3 is provided with an elongated hole 10 along its sliding direction, the upper cover 2 is provided with a threaded hole opposite to the elongated hole 10, and the threaded hole of the upper cover 2 is screwed with a connection. The connecting screw can be inserted into the elongated hole 10 of the lock gate 3 in a relatively sliding manner, and the head of the connecting screw stops on the side surface of the lock gate 3 facing away from the threaded hole. Limiting the sliding distance of the locking shutter 3 and guiding the sliding direction of the locking shutter 3 are realized by sliding the connecting screw in the elongated hole 10 of the locking shutter 3 .

A control panel 11 is also provided, the control panel 11 can be moved within a certain range and installed in the upper cover 2, and one end of the control panel 11 along the direction of its movement is tightly against the side wall surface of the lock gate 3 moving toward the unlocking direction, The other end of the control board 11 along its moving direction is abutted against the outer circumference of the eccentric wheel of all the cipher wheel sets 4 . Since the other end of the control board 11 is in close contact with the outer circumference of the eccentric wheels of all the cipher wheel groups 4, the control board 11 can only be realized when all the eccentric wheels are in contact with the other end of the control board 11 with the outer circular surface with a small radius. One end is in the unlocking position to realize unlocking.

One end of the control board 11 is mounted on the upper cover 2 , the other end of the control board 11 can swing relative to one end of the control board 11 at a set angle, and a concave escape hole 12 is provided on the side wall surface of the lock gate 3 moving toward the unlocking direction. , the other end of the control board 11 swings to face the side wall surface of the lock gate 3 moving toward the unlocking direction or the avoidance hole 12 on the surface thereof, and the side wall of the control board 11 along its swing direction elastically presses against all the cipher wheel groups. 4 on the outer surface of the eccentric circumference. When the password of the cipher wheel group 4 is incorrect, at least one outer circular surface with a large eccentric wheel radius on the cipher wheel group 4 contacts the control board 11. At this time, the side wall of the control board 11 is blocked by the eccentric wheel of the cipher wheel group 4, and the other end of the eccentric wheel is blocked. It is in close contact with the surface of the side wall of the lock gate 3 moving towards the unlocking direction, blocking the movement of the lock gate 3 towards the unlocking direction to achieve locking. When the password of the combination wheel group 4 is correct, the eccentric wheels on all the combination wheel groups 4 have a small radius The outer circular surface is in contact with the control board 11, and the control board 11 swings at an angle that is exactly opposite to the avoidance hole 12 of the lock gate 3, so as to avoid the sliding of the lock gate 3. At this time, the lock gate 3 can be slid and unlocked under the action of external force. This structure It is simple and can be driven by different directions of movement, effectively reducing the internal space of the upper cover 2. In addition to the use of a swing structure to prevent or avoid the other end of the control board 11 and the different parts of the surface of the lock gate 3, the control board 11 can also pass Sliding in the direction parallel to the surface of the lock gate 3, a blocking part perpendicular to the surface direction of the lock gate 3 is formed on the control board 11, and the control board 11 slides in a straight line, so that the blocking parts on it are opposite to different parts of the surface of the lock gate 3, These are equivalent replacement structures easily thought of by those skilled in the art according to this patent, and belong to the protection scope of this patent.

One end of the control board 11 is hinged on the upper cover 2, and a control board reset elastic member 13 is also provided. The eccentric side surface of group 4. The elastic retaining force is provided to the control board 11 through the control board reset elastic member 13, so that after the password of the combination wheel group 4 is obtained, the control board 11 automatically swings to the avoidance hole 12 of the lock gate 3 under the action of the elastic force to realize avoidance and control. In addition to the structure in which the board 11 is hingedly arranged in the upper cover 2 and exerts an elastic force through the control board reset elastic member 13, the control board 11 can also be an elastic structure. Cantilever structure, this structure can also realize the elastic swing of the control board 11, this kind of equivalent replacement structure can easily be thought of by those skilled in the art according to this patent, and belongs to the protection scope of this patent.

The lock structure 14 on the inner side wall of the lock box seat 1 is a concave slot or a boss protruding from the edge of the side wall of the opening of the lock box seat 1. The platform slides in the extension direction, and one end of the lock gate 3 is provided with a lock tongue 15, which can be inserted into the concave slot and stop on the upper side wall of the concave slot or inserted under the boss side and stop on the boss. The locking is realized by plugging, the structure is simple, and the tripping is convenient. In addition, the locking structure 14 and the lock gate 3 can also be connected by means of hooks, which are easy for those skilled in the art according to this patent. The conceivable equivalent replacement structures belong to the protection scope of this patent.

The two side walls of the lock tongue 15 along the rotation direction of the upper cover 2 are inclined or arc structures, and the outer surface of the upper cover 2 is also provided with a T-shaped groove structure 16 whose opening size is smaller than the internal size. The structure 16 is just opposite to the cipher wheel group 4, the window structure on the upper cover 2 is located on the bottom surface of the T-shaped groove structure 16, and a concave chute is formed on the side wall of the opening of the T-shaped groove structure 16, so A password cover plate 17 can be slidably installed in the chute, and the password cover plate 17 can slide along the chute to open or close the opening of the T-shaped groove structure 16, and a pull handle for manual pulling is formed on the password cover plate 17. structure. By designing the edge of the lock tongue 15 to be inclined or curved, an unlocking and locking guide is formed to ensure that when the upper cover 2 covers the opening of the lock box base 1, and when the cover is opened, the lock tongue 15 of the lock gate 3 can automatically retreat to achieve the same The lock structure 14 on the lock box base 1 is released, and the cipher cover 17 can cover the cipher wheel group 4 to play a role of dustproof, and at the same time realize the concealment effect of the cipher wheel group 4, so that the entire upper cover 2 faces away from the lock box. The surface on one side of the seat 1 is smooth and beautiful.

The cipher wheel set 4 includes a mandrel 18, an inner cipher wheel 19, an outer cipher wheel 20, a cipher elastic member 21, a cipher number adjustment member 22 and a cipher wheel positioning elastic piece 23, and the mandrel 18 can slide axially for a set distance. It is installed in the upper cover 2, one end of the peripheral outer wall of the mandrel 18 is provided with a radially outwardly convex blocking ring, one end of the password adjustment member 22 protrudes from the outside of the upper cover 2, and the other end of the password adjustment member 22 is sleeved on the core. The outer side of one end of the shaft 18 is stopped on the end face of one end of the stop ring. At least two inner code wheels 19 are sequentially sleeved on the outside of the mandrel 18. The inner code wheels 19 form a stepped structure with one end diameter smaller than the other end diameter, and the end with the larger diameter The eccentric wheel is formed, and a section of spline structure is formed on the root of the outer side wall of one end with a small diameter. The keyway matched with the spline structure on the inner cipher wheel 19, each inner cipher wheel 19 is in close contact with the axial sequence and finally abuts against the other end face of the retaining ring at one end of the mandrel 18, and the cipher elastic member 21 is sleeved on the mandrel 18. Outside the other end, the two ends of the password elastic member 21 are respectively abutted against the inner side wall of the upper cover 2 and the other end face of the inner password wheel 19 located at the other end of the mandrel 18. One end of the password wheel positioning elastic piece 23 is fixedly installed on the inner side of the inner cover. The other end of the positioning elastic piece 23 is elastically pressed against the outer circumferential surface of each outer password wheel 20 . The cipher wheel group 4 can realize the modification of the cipher through the cipher dialing element 22, thereby improving the security of use.

Claims (10)

1. A mechanical password safe deposit box, characterized by: the anti-theft lock comprises a lock box base (1), an upper cover (2), a lock gate (3) and password wheel sets (4), wherein the lock box base is of a box-shaped structure with an upper opening, one end side wall of the upper cover is hinged to one end side wall of the lock box base, the upper cover can cover or open the opening of the lock box base by overturning around a hinged shaft, a lock catch structure (14) is arranged on the inner side wall of the other end of the lock box base, the lock gate can be installed on the inner side of the upper cover in a sliding mode with a set distance, the lock gate can be fixedly connected with or disengaged from the lock catch structure on the inner side wall of the lock box base in a buckling mode, at least two password wheel sets can be installed on the inner side of the upper cover in a rotating mode, window opening structures corresponding to the password wheel sets one by one are formed on the upper cover, password marks uniformly distributed on the outer side wall of the circumference of the password wheel sets can be exposed out of the outer side of the upper cover through the window opening structures of the upper cover, coaxial rotating eccentric wheels are formed on the password wheel sets, the outer side surfaces of the circumference of the eccentric wheels on each password wheel set are tightly abutted to one side surface of the lock gate moving towards the lock gate and the lock catch structure in a tripping direction of the lock gate.

2. The mechanical password safe of claim 1, wherein: the upper cover is also internally provided with a reset elastic piece (7), and the reset elastic piece provides elastic retaining force for the locking brake to move towards the buckling direction of the locking structure.

3. The mechanical password safe of claim 2, wherein: the lock brake is provided with a spring slot (8), one end of the reset elastic piece is inserted into the spring slot, one end of the reset elastic piece tightly abuts against the bottom surface of the spring slot, the inner side wall of the upper cover is provided with a spring stop convex surface (9), and the other end of the reset elastic piece tightly abuts against the spring stop convex surface on the upper cover.

4. A mechanical password safe deposit box according to claim 1, 2 or 3, wherein: the lock brake is provided with a long hole (10) along the sliding direction of the lock brake, the upper cover is provided with a threaded hole right opposite to the long hole, a connecting screw is screwed in the threaded hole of the upper cover, the connecting screw can be inserted into the long hole of the lock brake in a relative sliding mode, and the head of the connecting screw is stopped on one side surface, back to the threaded hole, of the lock brake.

5. A mechanical password safe deposit box according to claim 1 or 2, wherein: the anti-theft device is characterized in that a control panel (11) is further arranged, the control panel can be installed in the upper cover in a certain range to move, one end of the control panel in the moving direction tightly supports the surface of the side wall of the locking brake moving towards the unlocking direction, and the other end of the control panel in the moving direction tightly supports the outer side faces of the circumferences of the eccentric wheels of all the password wheel sets.

6. The mechanical password safe of claim 4, wherein: control panel one end is installed on covering, and the control panel other end can be relative rather than one end swing set angle, be equipped with the aversion hole (12) of indent on the lateral wall surface that the lock floodgate moved towards the direction of unblanking, the control panel other end swing realize with the lock floodgate towards the lateral wall surface of the direction of unblanking motion or keep away the hole on its surface just right, the control panel along its swing direction's lateral wall elasticity tightly support on all the eccentric wheel circumference outside surfaces on the wheelset.

7. The mechanical password safe of claim 5, wherein: one end of the control panel is hinged to the upper cover, and the control panel reset elastic piece (13) is further arranged, and two ends of the control panel reset elastic piece respectively tightly abut against the inner side wall of the upper cover or the surface of one side of the eccentric wheel of the control panel, which faces away from the password wheel set.

8. A mechanical password safe deposit box according to claim 1 or 2, characterized in that: the lock catch structure on the inner side wall of the lock box base is an inward concave slot or a boss protruding from the edge of the side wall of the opening of the lock box base, the lock brake can slide along the depth direction of the inward concave slot or the extension direction of the boss, a lock tongue (15) is arranged at one end of the lock brake, and the lock tongue can be inserted into the inward concave slot and stopped on the upper side wall of the inward concave slot or on the lower side of the boss and stopped on the boss.

9. The mechanical password safe of claim 1, wherein: the spring bolt is for inclined plane or cambered surface structure along the both sides wall of upper cover direction of rotation, and the upper cover outside still is equipped with an opening size on the surface and is less than inside size's T shape groove structure (16), T shape groove structure just right with the password wheelset, and the structure of windowing of covering on is located this T shape groove structure bottom surface, is formed with sunken spout on the T shape groove structure opening lateral wall, can gliding installation password apron (17) in the spout, password apron can slide along the spout and open or be closed T shape groove structure opening, forms the pull handle structure that supplies the staff to stimulate on this password apron.

10. The mechanical password safe of claim 1, wherein: the password wheel set comprises a mandrel (18), an inner password wheel (19), an outer password wheel (20), a password elastic part (21), a password number adjusting part (22) and a password wheel positioning elastic sheet (23), the mandrel is axially installed in an upper cover in a sliding manner with a set distance, a retaining ring which is radially protruded outwards is arranged on the outer side wall of the circumference at one end of the mandrel, one end of the password number adjusting part extends out of the outer side of the upper cover, the other end of the password number adjusting part is sleeved outside one end of the mandrel and is stopped at the end surface at one end of the retaining ring, at least two inner password wheels are sequentially sleeved outside the mandrel, the inner password wheels form a step structure with one end diameter smaller than that of the other end, and the end with a large diameter forms an eccentric wheel, the one end circumference lateral wall root that its diameter is little is formed with one section spline structure on, the one end outside that interior password wheel diameter is little is located to the cover of outer password wheel one-to-one, and outer password wheel inboard is formed with the keyway that matches with interior password wheel on spline structure, each interior password wheel axial order in close contact with and finally tightly support on the fender ring other end terminal surface of dabber one end, the dabber other end outside is located to the password elastic component cover, the password elastic component both ends tightly support the upper cover inside wall respectively and lie in on the interior password wheel other end terminal surface of the dabber other end, password wheel location shell fragment one end fixed mounting is inboard in the inner cup, the password wheel location shell fragment other end tightly supports with each outer password wheel circumference outside surface elasticity.

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