CN114183023A

CN114183023A - Anti-knock bottom-opening password padlock

Info

Publication number: CN114183023A
Application number: CN202111616616.8A
Authority: CN
Inventors: 潘亮
Original assignee: Suzhou Kunshan General Locks Co ltd
Current assignee: Suzhou Kunshan General Locks Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-03-15
Also published as: WO2023123726A1

Abstract

The invention discloses a bottom-opening code padlock preventing knocking and opening, which comprises a lock body shell provided with a lock ring hole communicated with an inner cavity, a U-shaped lock ring, a code wheel group arranged on the lock body shell, a lock gate arranged in the lock body shell in a sliding way, a control plate rotationally arranged in the lock body shell through a rotating shaft, and a control plate reset elastic piece providing elastic holding force for keeping a contact control arm in close contact with an inner wheel of the code wheel group for the control plate, wherein two ends of the lock ring provided with a clamping groove structure on the side wall can be inserted into the lock body shell through the lock ring hole, the lock gate can be inserted into the clamping groove structure of the lock ring, the lock body shell is provided with a window for exposing a code mark on the code wheel group, the control plate is positioned at two sides of the rotating shaft and respectively forms an inserting stop arm capable of preventing the code wheel group from being separated from the clamping groove structure on the lock ring and a contact control arm tightly abutting against the eccentric outer circumferential surface of each inner wheel of the code wheel group, the invention improves the stability of the control plate in the lock body, the potential risk of self-unlocking when the lock body is vibrated is avoided.

Description

Anti-knock bottom-opening password padlock

Technical Field

The invention relates to an intelligent door lock, in particular to a bottom-opening code padlock capable of preventing knocking and opening.

Background

At present, common bottom-opening password padlocks on the market have a large degree of freedom in a lock body inner cavity, when the lock body falls freely or is knocked, the control panel can shift in the lock body due to vibration, the lock can be possibly opened due to the shift of the control panel in the lock body, the bottom-opening password padlocks are mistakenly opened or technically opened, and hidden dangers exist in the use safety of the bottom-opening password padlocks.

Disclosure of Invention

In order to overcome the defects, the invention provides the anti-knock bottom-opening coded padlock which can avoid the situation that a lock body is opened after being vibrated, and improves the use safety of the bottom-opening coded lock.

The technical scheme adopted by the invention for solving the technical problem is as follows: a knock-proof bottom-opening coded padlock comprises a lock body shell, a lock ring, coded wheel sets and a lock gate, wherein one end of the lock body shell is provided with two lock ring holes communicated with an inner cavity, two ends of the U-shaped lock ring can be respectively inserted into the inner cavity of the lock body shell through the lock ring holes, at least one side wall of the lock ring is provided with a clamping groove structure, the lock gate can be slidably arranged in the inner cavity of the lock body shell along the direction vertical to the extension direction of the lock ring, the lock gate can be inserted into the clamping groove structure of the lock ring to prevent the lock ring from being separated from the lock ring hole of the lock body shell, the coded wheel sets are respectively rotatably arranged in the inner cavity of the lock body shell, the lock body shell is provided with a window for exposing a coded mark on the coded wheel set, the lock body shell is also provided with a control plate and a control plate reset elastic element, two opposite side walls of the inner cavity of the lock body shell are respectively provided with a shaft hole or a rotating shaft hole, two opposite side walls of the control plate are respectively provided with a rotating shaft hole or a rotating shaft hole, the control panel is positioned on two sides of the rotating shaft and is respectively provided with an inserting stop arm and a contact control arm, the inserting stop arm can rotate along with the control panel to reach a locking position or an unlocking position, the inserting stop arm positioned at the locking position is contacted with the lock gate and stops the lock gate from being separated from a clamping groove structure on the locking ring, the inserting stop arm positioned at the unlocking position is separated from the lock gate, the contact control arm of the control panel is tightly abutted against each inner wheel eccentric outer circumferential surface of the password wheel set, and the control panel reset elastic piece provides elastic retaining force for keeping the contact control arm and the inner wheel of the password wheel set in tight contact all the time for the control panel.

As a further improvement of the invention, the contact control arm on the control plate is of a comb-shaped structure, each outer wheel of the password wheel set is positioned in a comb tooth gap of the comb-shaped structure of the contact control arm, and each comb tooth of the contact control arm is respectively and tightly contacted with the eccentric circumference outer side surface of the inner wheel of each password wheel set.

As a further improvement of the invention, the opposite side walls at the two ends of the lock ring are respectively provided with a clamping groove structure, the two lock brakes can be respectively and relatively slidably arranged in the lock body shell along the width direction of the lock ring, and the insertion stopping arm of the control plate can be inserted into or withdrawn from the gap between the two lock brakes along with the rotation of the control plate.

As a further improvement of the invention, the device is also provided with a slide bar and a lock brake spring, the two lock brakes are respectively sleeved outside the slide bar in a sliding way, the lock brake spring is sleeved outside the slide bar, and the two ends of the lock brake spring which elastically stretch are respectively tightly propped against the opposite side walls of the two lock brakes.

As a further improvement of the invention, a protruding part is arranged on the side wall of the insertion stopping arm of the control board, a recessed part is arranged on the side wall of the lock gate, the protruding part on the insertion stopping arm of the control board can be inserted into the recessed part on the side wall of the lock gate, a chamfer structure is formed on the edge of the protruding part of the control board, and the recessed part on the side wall of the lock gate, which faces the insertion arm of the control board and is separated from the side wall, is an inclined surface which enlarges the opening of the recessed part.

As a further improvement of the invention, the lock body shell comprises an outer sleeve, a lower cover, an upper cover and a bottom cover, the upper cover and the lower cover are fixedly spliced together, the upper cover and the lower cover jointly form a barrel-shaped structure with an opening at one end, at least one of the upper cover and the lower cover is provided with a plurality of password wheel positioning grooves arranged at intervals, the password wheel sets can be rotatably accommodated in the password wheel positioning grooves, the lower cover and the upper cover are also jointly internally provided with two shaft holes for mounting rotating shafts on two side walls of a control panel and a slideway for accommodating a lock gate, the bottom cover is fixedly covered outside the barrel-shaped structure opening formed by the upper cover and the lower cover, the bottom cover is provided with an opening window for exposing an outer wheel of each password wheel set, a password mark on the password wheel set is positioned on the surface of the outer wheel circumference, and the outer sleeve is fixedly sleeved outside an inner shell formed by the upper cover, the lower cover and the bottom cover jointly.

As a further improvement of the invention, a connecting hole is arranged on the outer shell of the lock body, a bolt hole is formed on the side wall of the inner shell formed by the upper cover, the lower cover and the bottom cover together, the bolt hole is opposite to the connecting hole on the side wall of the outer shell of the lock body, and a positioning pin is fixedly inserted in the connecting hole and the bolt hole.

As a further improvement of the invention, the inner side wall of the lower cover is also provided with a spring jack, one end of the control plate reset elastic piece is inserted into the spring jack, the other end of the control plate reset elastic piece tightly abuts against the surface of the control plate, and the contact position of the control plate reset elastic piece and the control plate is positioned on one side of the rotating shaft, which is closer to the inserting stop arm.

As a further improvement of the invention, the lock ring is an asymmetric structure with one end longer than the other end, a circle of annular concave ring and an eccentric avoiding groove are formed on the side wall of the long end, a lock ring sliding groove for accommodating the long end of the lock ring is formed between the upper cover and the lower cover, a limit bulge is fixedly arranged in the lock ring sliding groove, the limit bulge just extends into the annular concave ring of the lock ring, the password wheel set comprises an outer wheel, an inner wheel, a central shaft and a password wheel elastic element, the inner wheel is blocked in the circumferential direction and can be inserted in the inner side of the outer wheel in a sliding way in the axial direction, the eccentric outer circumferential surface on the inner wheel is exposed out of the outer wheel and blocked on the end face of one end of the outer wheel in the axial direction, the inner wheel can be rotatably sleeved on the outer side of the central shaft, the axial end faces of the adjacent inner wheels are in close contact, and radial outward expanding step structures are respectively formed at the two ends of the central shaft, the radial outward-expanding step structure stop is positioned on the end faces of the inner wheel positioned at the two ends of the central shaft, one end of the central shaft can extend into the lock ring sliding groove and is right opposite to the eccentric avoiding groove on the lock ring, and the password wheel elastic piece provides elastic retaining force towards one end direction for the other end of the central shaft.

As a further improvement of the invention, a password wheel elastic sheet is fixedly arranged in the inner cavity of the lock body shell, one end of the password wheel elastic sheet is provided with elastic contact parts which are in one-to-one correspondence with the password wheel groups, the outer circumferential surface of the outer wheel of the password wheel groups is provided with contact grooves which are in correspondence with the password marks, the elastic contact part at one end of the password wheel elastic sheet can elastically abut against the outer wheel surface of the password wheel groups, and the elastic contact part at one end of the password wheel elastic sheet can be accommodated in the contact grooves on the outer circumferential side wall of the password wheel groups.

The invention has the beneficial effects that: the control panel is arranged in the lock body through the matching of the rotating shaft and the shaft hole, the control panel can only rotate around the axis of the rotating shaft, and even if the control panel is vibrated, the control panel cannot generate position deviation, so that the situation of self-unlocking cannot occur after the lock body drops or is knocked.

Drawings

FIG. 1 is an exploded view of the present invention;

fig. 2 is an exploded view of the inner core of the present invention;

FIG. 3 is a perspective view of the structural principle of the present invention;

FIG. 4 is an exploded view of the structural principle of the present invention;

FIG. 5 is a front sectional view of the structural principle of the present invention;

FIG. 6 is a schematic bottom sectional view of the present invention;

FIG. 7 is a right side sectional view of the unlocked state of the present invention;

FIG. 8 is a right side sectional view of the present invention in a latched state;

fig. 9 is a perspective view of the control panel of the present invention.

Detailed Description

Example (b): a knock-proof bottom-opening coded padlock comprises a lock body shell, a lock ring 9, coded wheel sets and a lock gate 6, wherein one end of the lock body shell is provided with two lock ring 9 holes communicated with an inner cavity, two ends of a U-shaped lock ring 9 can be respectively inserted into the inner cavity of the lock body shell through the lock ring 9 holes, the side wall of at least one end of the lock ring 9 is provided with a clamping groove structure 22, the lock gate 6 can be slidably arranged in the inner cavity of the lock body shell along the direction vertical to the extension direction of the lock ring 9, the lock gate 6 can be inserted into the clamping groove structure 22 of the lock ring 9 to prevent the lock ring 9 from being separated from the lock ring 9 holes of the lock body shell, a plurality of coded wheel sets are respectively rotatably arranged in the inner cavity of the lock body shell, the lock body shell is provided with a window for exposing coded marks on the coded wheel sets, a control plate 4 and a control plate reset elastic part 5 are also arranged, two opposite side walls of the inner cavity of the lock body shell are respectively provided with a shaft hole or a rotating shaft 19, two opposite side walls of the control panel 4 are respectively provided with a rotating shaft 19 or a shaft hole, the rotating shaft 19 can be rotatably inserted into the shaft hole, the control panel 4 is positioned at two sides of the rotating shaft 19 and respectively provided with an insertion stop arm 20 and a contact control arm 21, the insertion stop arm 20 can rotate along with the control panel 4 to reach a locking position or an unlocking position, the insertion stop arm 20 positioned at the locking position is contacted with the locking gate 6 and stops the locking gate 6 from being separated from a clamping groove structure 22 on the locking ring 9, the insertion stop arm 20 positioned at the unlocking position is separated from the locking gate 6, the contact control arm 21 of the control panel 4 is tightly abutted against each eccentric outer circumferential surface of the inner wheel 2 of the password wheel set, and the control panel reset elastic piece 5 provides elastic holding force for the control panel 4 to keep the contact control arm 21 and the inner wheel 2 of the password wheel set in tight contact all the time.

When each code wheel group rotates to a state of being opposite to the correct code, the lowest height position on the eccentric outer circumferential surface of all the inner wheels 2 is opposite to the contact control arm 21 of the control board 4, the control board 4 rotates around the rotating shafts 19 on the two sides in the positive direction under the ejection action of the control board reset elastic piece 5, and the inserting stop arm 20 of the control board 4 is separated from the lock gate 66, as shown in fig. 7. When the locking ring 99 is pulled outwards, the locking gate 6 can be forced to exit by the clamping groove on the locking ring 9, the locking ring 9 can be pulled out smoothly without the blocking of the locking gate 6, so that unlocking is realized, and the locking gate 6 is generally contacted with the clamping groove on the locking ring 9 through the inclined surface, so that smooth exit can be realized.

When each outer code wheel set is not rotated to a state opposite to a correct code, one or more parts with high height on the eccentric outer circumferential surface of the inner wheel 2 are opposite to the contact control arm 21 of the control panel 4, at the moment, the control panel 4 in a locking state cannot rotate, the insertion stop arm 20 on the control panel 4 is in a blocking state of being tightly contacted with the locking gate 6, the locking gate 6 cannot be withdrawn from the slot structure 22 on the locking ring 9 and cannot be unlocked, for the control panel 4 in an unlocking state, when the code set is rotated to a wrong code state, the contact control arm 21 of the control panel 4 is jacked up by one or more parts with high height on the eccentric outer circumferential surface of the inner wheel 2, the control panel 4 rotates reversely around the rotating shafts 1919 on the two sides, the insertion stop arm 20 of the control panel 4 sinks to a locking state and tightly abuts against the locking gate 6, so that the locking gate 6 cannot be withdrawn from the slot structure 22 on the locking ring 9, as shown in fig. 3 and 8, the lock is in the locked state.

The control panel 4 of the invention rotates around the rotating shaft 19 on both sides all the time in the unlocking and locking process, and is restricted by the rotating shaft 19, and can not generate the movement in other directions, and because the control panel is blocked by the eccentric outer circumferential surface of the inner wheel 2 in the rotating direction of the locking body, no matter how much vibration is received by the lock body, the control panel 4 can not generate reverse rotation to the unlocking position in the locking state, therefore, even if the lock body is knocked to generate vibration, the inserting stop arm 20 of the control panel 4 can not be separated from the lock gate 6, thereby having good knocking-proof unlocking performance and greatly improving the use safety of the bottom-opening password padlock.

The contact control arm 21 on the control panel 4 is in a comb-shaped structure, each outer wheel 1 of the password wheel set is positioned in a comb tooth gap of the comb-shaped structure of the contact control arm 21, and each comb tooth of the contact control arm 21 is respectively and tightly contacted with the eccentric circumference outer side surface of the inner wheel 2 of each password wheel set. Through the contact control arm 21 of similar comb structure, realized dodging outer wheel 1 of password wheelset, can guarantee simultaneously and each in the eccentric circumference lateral surface of wheel 2 keeps in close contact with, contact control arm 21 is except adopting comb column structure to dodge outer wheel 1, also can dodge outer wheel 1 through forming dodge sunk structure, and this type all is the equivalence alternative structure that this patent of technical personnel in the field thought very easily according to this patent, belongs to this patent protection scope.

The opposite side walls at the two ends of the lock ring 9 are respectively provided with a clamping groove structure 22, the two lock brakes 6 can be installed inside the lock body shell in a relative sliding mode along the width direction of the lock ring 9, and the inserting stop arm 20 of the control plate 4 can be inserted into or withdrawn from a gap between the two lock brakes 6 along with the rotation of the control plate 4. The two lock brakes 6 are used for respectively clamping the side walls at the two ends of the lock ring 9, so that the locking stability of the lock ring 9 is improved, and of course, only the side wall at one end of the lock ring 9 can be clamped as long as the lock ring 9 can be prevented from being pulled out.

The sliding rod 8 and the locking brake spring 7 are further arranged, the two locking brakes 6 can be sleeved outside the sliding rod 8 in a sliding mode respectively, the locking brake spring 7 is sleeved outside the sliding rod 8, and two ends, elastically telescopic, of the locking brake spring 7 are tightly abutted to the side walls, opposite to the two locking brakes 6, of the two locking brakes 6 respectively. The sliding rod 8 plays a role in guiding the relative sliding of the two locking brakes 6, and the locking brake spring 7 can provide a position state for keeping the locking brakes 6 away from each other, so that the insertion stopping arm 20 of the control panel 4 smoothly enters between the two locking brakes 6 to block the two locking brakes 6 from sliding when the two locking brakes are locked.

Be equipped with bellying 23 on the grafting of control panel 4 stopping arm 20 lateral wall, be equipped with depressed part 24 on the 6 lateral walls of lock floodgate, bellying 23 on the grafting of control panel 4 stopping arm 20 can insert and locate in the depressed part 24 on the 6 lateral walls of lock floodgate, the bellying 23 edge of control panel 4 is formed with the chamfer structure, and the depressed part 24 on the 6 lateral walls of lock floodgate deviates from one side for making the inclined plane that the depressed part 24 opening increases towards the grafting arm of control panel 4. In the locked state, the protruding portion 23 on the sidewall of the insertion stop arm 20 of the control panel 4 can be inserted into the recessed portion 24 on the sidewall of the locking gate 6, thereby further preventing the control panel 4 from being overturned due to vibration.

The lock body shell comprises an outer sleeve 18, a lower cover 11, an upper cover 10 and a bottom cover 14, the upper cover 10 and the lower cover 11 are fixedly spliced together through openings, the upper cover 10 and the lower cover 11 jointly form a barrel-shaped structure with an opening at one end, at least one of the upper cover 10 and the lower cover 11 is provided with a plurality of password wheel positioning grooves which are arranged at intervals, a password wheel set can be rotatably accommodated in each password wheel positioning groove, the lower cover 11 and the upper cover 10 are also internally and jointly provided with two shaft holes for installing rotating shafts 19 on two side walls of a control panel 4 and a slideway for accommodating a lock gate 6, the bottom cover 14 is fixedly covered outside the opening of the barrel-shaped structure formed by the upper cover 10 and the lower cover 11, the bottom cover 14 is provided with an opening window for exposing an outer wheel 1 of each password wheel set, and password marks on the password wheel set are positioned on the surface of the outer side of the circumference of the outer wheel 1, the outer sleeve 18 is fixedly sleeved outside an inner shell formed by the upper cover 10, the lower cover 11 and the bottom cover 14 together. Through upper cover 10, lower cover 11 and bottom 14 have formed an inner shell, be used for to the password wheelset, control panel 4, the equipment location of lock floodgate 6 and catch 9, upper cover 10 can be the just right lid structure of opening direction with lower cover 11, during the equipment, earlier password wheelset, control panel 4, lock floodgate 6 and catch 9 carry out preliminary equipment location in lower cover 11, then cover upper cover 10 on lower cover 11, the two fix through connecting pieces such as connecting screw can, then cover the barrel structure opening part that upper cover 10 and lower cover 11 formed with bottom 14, form the bottom shell that supplies the password wheelset to expose, finally fix the cover 18 fixed cover at upper cover 10, the lock core structure outside that lower cover 11 and bottom 14 formed jointly can, the equipment of the lock body of being convenient for of this kind of mode, and what overcoat 18 can do is more pleasing to the eye.

The lock body outer shell is provided with a connecting hole 25, a bolt hole 26 is formed in the side wall of the inner shell formed by the upper cover 10, the lower cover 11 and the bottom cover 14, the bolt hole 26 is opposite to the connecting hole 25 in the side wall of the lock body outer shell, and a positioning pin 15 is fixedly inserted in the connecting hole 25 and the bolt hole 26. The outer sleeve 18 and the inner shell are fixed and positioned through the positioning pin 15, the structure is simple, a tooth-shaped structure is optimally formed on the outer side of the positioning pin 15, after the tooth-shaped structure is tightly inserted into the connecting hole 25 and the bolt hole 26, the tooth-shaped structure can form embedded connection with the inner side wall of the connecting hole 25 or/and the inner side wall of the bolt hole 26, the falling of the positioning pin 15 is avoided, the positioning structure can prevent the outer sleeve 18 from being disassembled from the outside to disassemble and unlock the lock body, in addition, the outer sleeve 18 and the inner shell can also be positioned through welding, bonding and other modes, and the like are equivalent replacement structures which can be easily thought by a person skilled in the art according to the patent, and belong to the protection scope of the patent.

Still be equipped with spring jack 27 on the lower cover 11 inside wall, control panel elastic component 5 one end that resets is inserted and is located in spring jack 27, the control panel elastic component 5 other end that resets tightly supports control panel 4 surface, control panel elastic component 5 that resets is located pivot 19 with control panel 4 contact position and is more close to grafting stop arm 20 one side.

The control panel elastic reset part 5 adopts a pressure spring structure, generates elastic energy storage by being compressed, and has one end inserted into the spring jack 27 of the lower cover 11 to play a role in positioning and guiding, thereby avoiding the transverse deformation and damage caused by the compression of the control panel elastic reset part, preventing the control panel elastic reset part from being separated from the original position after being vibrated, and ensuring the control panel elastic reset part to keep a stable elastic release state.

The lock ring 9 is an asymmetric structure with one end longer than the other end, a circle of annular concave ring 28 and an eccentric avoiding groove 29 are formed on the side wall of one end with long length, a lock ring 9 sliding groove for accommodating one end with long length of the lock ring 9 is formed between the upper cover 10 and the lower cover 11, a limit bulge 17 (the limit bulge 17 can be integrally formed in the lock ring 9 sliding groove or can be a pin inserted on the side wall of the lock ring 9 sliding groove) is fixedly arranged in the lock ring 9 sliding groove, the limit bulge 17 just extends into the annular concave ring 28 of the lock ring 9, the password wheel set comprises an outer wheel 1, an inner wheel 2, a central shaft 3 and a password wheel elastic element 13, the inner wheel 2 is stopped in the circumferential direction and can be inserted into the inner side of the outer wheel 1 in a sliding manner in the axial direction, the eccentric outer circumferential surface of the inner wheel 2 is exposed out of the outer wheel 1 and is stopped on the end surface of one end face of the outer wheel 1 in the axial direction, the inner wheel 2 can be rotatably sleeved outside the central shaft 3, the axial end faces of the adjacent inner wheels 2 are in close contact, radial outward-expanding step structures 12 are respectively formed at two ends of the central shaft 3, the radial outward-expanding step structures 12 are stopped on the end faces of the inner wheels 2 at two ends of the central shaft 3, one end of the central shaft 3 can extend into a sliding groove of the locking ring 9 and is right opposite to an eccentric avoiding groove 29 on the locking ring 9, and the password wheel elastic piece 13 provides elastic retaining force towards one end direction for the other end of the central shaft 3. This structure makes the catch 9 on the padlock be connected with the lock body all the time, it loses with the lock body separation to have avoided catch 9, catch 9 through pulling out certain distance realize unblank can, catch 9 rotates when the password is correct and can push up center pin 3 and remove to other end direction, and then with the interior wheel 2 ejecting foreign steamer 1 outside of password wheelset, 2 and foreign steamer 1 separation in the messenger, and then can realize the password modification, the password modification is accomplished the back, can realize under password wheel elastic component 13 effect that interior wheel 2 resets to with foreign steamer 1 grafting state.

Still fixed mounting has password wheel shell fragment 16 in the lock body shell inner chamber, and password wheel shell fragment 16 one end is formed with the elastic contact portion with password wheelset one-to-one, be equipped with the contact slot that corresponds with the password sign on the foreign steamer 1 circumference outside surface of password wheelset, the elastic contact portion of password wheel shell fragment 16 one end can elasticity tightly support foreign steamer 1 surface of password wheelset, and the elastic contact portion of password wheel shell fragment 16 one end can hold in the contact slot on password wheelset circumference lateral wall. Password wheel shell fragment 16 elastic contact password wheel's foreign steamer 1 all the time, foreign steamer 1 rotates a password sign and just to the position with the lock body shell windowing, and password wheel shell fragment 16's elastic contact portion just gets into the contact groove of password wheel automatically, realizes password wheel group's automatic positioning, prevents that password wheel from receiving the stirring power and turning in disorder.

Claims

1. The utility model provides a prevent knocking and open end-opening password padlock, includes lock body shell, catch (9), password wheelset and lock floodgate (6), lock body shell one end is formed with two lock ring holes that communicate with the inner chamber, the catch both ends that are the U-shaped can insert the lock body shell inner chamber through the lock ring hole respectively, be equipped with the draw-in groove structure on the at least one end lateral wall of catch, the lock floodgate can be followed the gliding installation in the inner chamber of lock body shell of perpendicular catch extending direction, the lock floodgate can insert the draw-in groove structure internal resistance lock ring that locates the catch and deviate from the lock body shell's lock ring hole, a plurality of password wheelsets can the pivoted respectively install in the inner chamber of lock body shell, be equipped with on the lock body shell and supply the windowing that password identification exposes on the password wheelset, its characterized in that: also provided with a control panel (4) and a control panel reset elastic piece (5), two opposite side walls of the inner cavity of the lock body shell are respectively provided with a shaft hole or a rotating shaft (19), two opposite side walls of the control panel are respectively provided with a rotating shaft or a shaft hole, the rotating shaft can be rotatably inserted into the shaft hole, the control panel is positioned at two sides of the rotating shaft and is respectively provided with an inserting stop arm (20) and a contact control arm (21), the inserting stop arm can rotate along with the control board to reach a locking position or an unlocking position, the inserting stop arm positioned at the locking position is contacted with the lock brake and stops the lock brake from being separated from the clamping groove structure on the locking ring, the inserting stop arm positioned at the unlocking position is separated from the lock brake, the contact control arms of the control board tightly abut against the eccentric outer circumferential surfaces of the inner wheels of the password wheel set, and the control board reset elastic piece provides elastic holding force for keeping the contact control arms and the inner wheels of the password wheel set in close contact all the time for the control board.

2. The knock-resistant, bottom-opening combination padlock of claim 1, wherein: the contact control arm on the control panel is of a comb-shaped structure, each outer wheel of the password wheel set is located in a comb tooth gap of the comb-shaped structure of the contact control arm, and each comb tooth of the contact control arm is respectively in close contact with the outer side surface of the eccentric circumference of the inner wheel of each password wheel set.

3. The knock-resistant, bottom-opening combination padlock of claim 1, wherein: the lock body is characterized in that the opposite side walls at the two ends of the lock ring are respectively provided with a clamping groove structure (22), the two lock brakes can be installed inside the lock body shell in a relative sliding mode along the width direction of the lock ring, and the inserting stopping arm of the control plate can be inserted into or withdrawn from a gap between the two lock brakes along with the rotation of the control plate.

4. The knock-resistant, bottom-opening combination padlock of claim 3, wherein: the sliding rod is further provided with a sliding rod (8) and a locking brake spring (7), the two locking brakes are respectively sleeved on the outer side of the sliding rod in a sliding mode, the locking brake spring is sleeved on the outer side of the sliding rod, and the two ends, elastically telescopic, of the locking brake spring respectively tightly abut against the two opposite side walls of the locking brakes.

5. The knock-resistant, bottom-opening combination padlock of claim 1, wherein: the improved lock gate structure is characterized in that a protruding portion (23) is arranged on the side wall of the inserting stopping arm of the control panel, a recessed portion (24) is arranged on the side wall of the lock gate, the protruding portion on the inserting stopping arm of the control panel can be inserted into the recessed portion on the side wall of the lock gate, a chamfer structure is formed at the edge of the protruding portion of the control panel, and the recessed portion on the side wall of the lock gate is separated from the inclined plane of one side of the inserting stopping arm towards the control panel, so that the opening of the recessed portion is increased.

6. The knock-resistant, bottom-opening combination padlock of claim 1, wherein: the lock body shell comprises an outer sleeve (18), a lower cover (11), an upper cover (10) and a bottom cover (14), the upper cover and a lower cover are fixedly spliced together, the upper cover and the lower cover jointly form a barrel-shaped structure with an open end, at least one of the upper cover and the lower cover is provided with a plurality of code wheel positioning grooves arranged at intervals, code wheel groups can be rotatably accommodated in the code wheel positioning grooves, the lower cover and the upper cover are internally and jointly formed with two shaft holes for mounting rotating shafts on two side walls of a control panel and a slideway for accommodating a lock brake, the bottom cover is fixedly covered outside the barrel-shaped structure opening formed by the upper cover and the lower cover, an opening window for exposing an outer wheel of each code wheel group is formed in the bottom cover, a code mark on the code wheel group is positioned on the surface of the circumference of the outer wheel, and the outer sleeve is fixedly sleeved outside an inner shell formed by the upper cover, the lower cover and the bottom cover.

7. The knock-resistant, bottom-opening combination padlock of claim 6, wherein: the lock body is characterized in that a connecting hole (25) is formed in the lock body outer shell, a bolt hole (26) is formed in the side wall of the inner shell formed by the upper cover, the lower cover and the bottom cover together, the bolt hole is opposite to the connecting hole in the side wall of the lock body outer shell, and a positioning pin (15) is fixedly inserted in the connecting hole and the bolt hole.

8. The knock-resistant, bottom-opening combination padlock of claim 6, wherein: still be equipped with spring jack (27) on the lower cover inside wall, control panel elastic component one end that resets is inserted and is located in the spring jack, the control panel elastic component other end that resets tightly supports the control panel surface, control panel elastic component that resets is located pivot one side closer to grafting backstop arm with the control panel contact position.

9. The knock-resistant, bottom-opening combination padlock of claim 6, wherein: the lock ring is of an asymmetric structure with one end longer than the other end, a circle of annular concave ring (28) and an eccentric avoiding groove (29) are formed on the side wall of one end with long length, a lock ring sliding groove for accommodating one end with long length of the lock ring is formed between the upper cover and the lower cover, a limit bulge (17) is fixedly arranged in the lock ring sliding groove and just extends into the annular concave ring of the lock ring, the password wheel set comprises an outer wheel (1), an inner wheel (2), a central shaft (3) and a password wheel elastic part (13), the inner wheel is locked in the circumferential direction and can be inserted into the inner side of the outer wheel in a sliding way in the axial direction, the eccentric outer circumferential surface of the inner wheel is exposed out of the outer wheel and stopped on the end surface of one end face of the outer wheel in the axial direction, the inner wheel can be rotatably sleeved on the outer side of the central shaft, the axial end faces of the adjacent inner wheels are in close contact, and radial outward expanding step structures (12) are respectively formed at the two ends of the central shaft, the radial outward-expanding step structure stop is positioned on the end faces of the inner wheel positioned at the two ends of the central shaft, one end of the central shaft can extend into the lock ring sliding groove and is right opposite to the eccentric avoiding groove on the lock ring, and the password wheel elastic piece provides elastic retaining force towards one end direction for the other end of the central shaft.

10. The knock-resistant, bottom-opening combination padlock of claim 1, wherein: still fixed mounting has password wheel shell fragment (16) in the lock body shell inner chamber, password wheel shell fragment one end be formed with the elastic contact portion of password wheelset one-to-one, the foreign steamer circumference outside of password wheelset is equipped with the contact slot that corresponds with the password sign on the surface, and the elastic contact portion of password wheel shell fragment one end can elasticity tightly support the foreign steamer surface of password wheelset, and the elastic contact portion of password wheel shell fragment one end can hold in the contact slot on password wheelset circumference lateral wall.