CN209482880U - Combination lock unlocking mechanism - Google Patents

Abstract

The utility model relates to the technical field of coded locks, in particular to an unlocking mechanism of a coded lock, which comprises an outer door handle, an inner turntable and an inner door handle, the inner turntable is rotatably arranged on a bottom plate, and the inner turntable is fixedly connected with the inner door handle through an inner rotating shaft , there is an outer shaft on the outer door handle, the outer shaft is rotated relative to the lock housing, and can be axially displaced relative to the inner turntable. The utility model has a simple structure and is easy to operate. It must be inserted into the inner turntable to open the door through the outer door handle outside the house, so it can be realized that only the outer shaft can be inserted into the inner turntable, and the outer door handle can be opened, that is, the outer shaft is inserted into the inner turntable Before, the first lock tongue and the second lock tongue could not be retracted through the driving of the outer door handle, thus providing diversified options for the design of combination locks and ensuring a higher safety factor.

Description

Combination lock unlocking mechanism

technical field

The utility model relates to the technical field of combination locks, in particular to an unlocking mechanism of a combination lock.

Background technique

At present, combination locks are mainly divided into mechanical locks and electronic locks. Although electronic locks are simple in structure and easy to use, they are not resistant to moisture, are prone to damage, and are easy to be cracked; therefore, mechanical locks are still generally welcomed by the market. However, existing The unblanking mechanism in the mechanical combination lock of the present invention has the problems of complicated structure and inconvenient use.

Utility model content

The technical problem to be solved by the utility model is: in order to solve the problems of complex structure and inconvenient use in the unlocking mechanism of the mechanical combination lock in the prior art, an unlocking mechanism of the combination lock is now provided.

The technical scheme adopted by the utility model to solve the technical problem is: an unlocking mechanism of a coded lock, the coded lock includes a lock case, a lock core plate located in the lock case, a bottom plate arranged on the lock case and a slidingly arranged The first lock tongue on the bottom plate, the lock core plate has a plurality of lock core blocks, and the bottom plate is slidably provided with a reset plate, which can reset the lock core blocks when the reset plate moves upwards. The unlocking mechanism includes an outer Door handle, inner turntable and inner door handle, the inner turntable is rotatably arranged on the bottom plate, the inner turntable is fixedly connected with the inner door handle through the inner turn shaft, the outer door handle has an outer turn shaft, and the outer turn shaft is relatively locked The shell is rotated and can be axially displaced relative to the inner rotating disk. The end of the outer rotating shaft close to the inner rotating shaft has a plug-in part. The inner rotating disc is provided with a socket matching the plug-in part. The part is opposite to the jack;

The first lock tongue is in transmission connection with the inner turntable. When the inner turntable rotates, it can provide a driving force for the retraction of the first lock tongue. When the plug-in part is inserted into the socket, the outer shaft is circumferentially fixed on the inner turntable. superior.

In this scheme, because the inner door handle is directly connected with the inner turntable through the inner rotating shaft, the inner door handle can be directly turned inside the house to retract the first dead bolt and the second dead bolt, thereby opening the combination lock; Insert the socket into the socket smoothly, and then turn the outer door handle to drive the inner turntable to rotate together, thereby opening the combination lock.

Further, an inner rod is eccentrically arranged on the inner turntable, a slide bar is fixed on the first lock tongue, the slide bar is slidably connected to the bottom plate, an inner connecting rod is arranged on the bottom plate, and the inner connecting rod The middle part of the sliding rod is rotated and set on the bottom plate, the end of the slide bar away from the first dead bolt is provided with a stop rod part, the tail end of the inner connecting rod is located between the stop rod part and the first dead bolt, and the inner connecting rod The head end of the rod is provided with a first long slot, and the inner rod is located in the first long slot.

Further, a slider is slidably arranged on the bottom plate, and a second lock tongue is fixed on the slider through a connecting frame. Both the first lock tongue and the second lock tongue are located on the same side of the lock housing, and the slider The lower surface of the block is provided with a lower recess, and the lower recess has two lower force-bearing surfaces for the tail end of the inner connecting rod to abut against, and the tail end of the inner connecting rod is located between the two lower force-bearing surfaces .

Further, an outer turntable is sleeved on the insertion part, and the outer turntable is circumferentially fixed on the insertion part, and an outer rod is eccentrically arranged on the outer turntable, and an outer rod is provided between the outer rod and the slider. The outer connecting rod, the middle part of the outer connecting rod is relatively rotatable and arranged in the lock housing, the first end of the outer connecting rod is provided with a second long groove, the outer rod is located in the second long groove, and the slider There is an upper recessed portion on the upper surface of the upper recessed portion, and one end of the upper recessed portion close to the second lock tongue has an upper force bearing surface for the tail end of the outer connecting rod to abut against.

Further, it also includes a lock cylinder rod, one end of the lock cylinder rod is fixedly connected to the lock cylinder plate, and the other end is provided with a limiting part, the upper surface of the limiting part is a slope, and the limiting part blocks Above the hole, the insertion part is directly opposite to the slope of the limiting part, and the upper surface of the slope gradually slopes downward.

Further, the outer turntable is in transmission connection with the reset plate, and when the outer turntable rotates, it can provide a driving force for the upward movement of the reset plate.

Further, one side of the outer peripheral surface of the outer turntable is provided with a horizontal groove, and the other side is provided with a chute communicating with the horizontal groove, the extension path of the horizontal groove is at the same axial position of the outer turntable, and the slant The extension path of the groove is gradually inclined upward along the circumference of the outer turntable. A vertical bar is slid up and down on the bottom plate. A horizontal bar is fixed on the top of the vertical bar. An outer reset rod is fixed on the reset plate. One end of the external reset rod close to the cross bar is located directly above the cross bar.

Further, a deadbolt spring is sheathed on the sliding rod, a mounting seat is fixed on the bottom plate, the sliding rod passes through the mounting seat, one end of the deadbolt spring is against the mounting seat, and the other end is against the second On a deadbolt.

Further, a base is fixed inside the lock housing, the outer rotating shaft passes through the base, and a rotating sleeve is fixed on the outer circumference of the outer rotating shaft, and the rotating sleeve is rotationally connected with the base, and the rotating sleeve is put on An external torsion spring is provided, one free end of the external torsion spring is against the rotating sleeve, and the other free end is against the base, and an axial spring is sleeved on the external rotating shaft, and one end of the axial spring It is fixed on the lock case and the other end is fixed on the base.

Further, an inner casing is provided at the end of the bottom plate away from the lock casing, the inner rotating shaft passes through the inner casing, and an inner torsion spring is arranged on the inner rotating shaft, and a free end of the inner torsion spring abuts against the inner casing , and the other free end is relatively against the inner shaft.

The beneficial effects of the utility model are: the unlocking mechanism of the combination lock of the utility model has a simple structure and is easy to operate. It adopts a separate design of the outer rotating shaft and the inner rotating disk, so that the outer rotating shaft must be inserted into the inner rotating disk to pass the outer door handle outside the house. To open the door, it is possible to control whether the outer door handle can open the door only by controlling whether the outer shaft can be inserted into the inner turntable, that is, before the outer shaft is inserted into the inner turntable, the first bolt and the second bolt cannot pass through The drive of the outer door handle is retracted, thereby providing a variety of options for the design of the combination lock and ensuring a high safety factor.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the schematic sectional view of the unlocking mechanism of the combination lock of the present invention;

Fig. 2 is a partially enlarged schematic diagram of A in Fig. 1;

Fig. 3 is a top view schematic diagram of the combination lock of the present utility model;

Fig. 4 is a schematic sectional view of B-B in Fig. 3;

Fig. 5 is a schematic sectional view of C-C in Fig. 3;

Fig. 6 is a schematic diagram of cooperation between the crossbar and the outer turntable in the unlocking mechanism of the combination lock of the present invention;

Fig. 7 is the schematic diagram of the slider in the unlocking mechanism of the combination lock of the present invention;

Fig. 8 is a schematic diagram of the outer turntable in the unlocking mechanism of the combination lock of the present invention.

In the figure: 1, lock case, 2, lock core plate, 2-1, through hole, 3, bottom plate, 3-1, mounting base, 3-2, support, 4, first dead bolt, 5, lock core Block, 5-1, card post, 6, reset plate, 6-1, reset protrusion, 6-2, outer reset lever, 7, first plate, 8, outer door handle, 9, outer rotating shaft, 9-1 , socket part, 10, outer turntable, 10-1, outer rod, 10-2, horizontal groove, 10-3, chute;

11. Inner door handle, 12. Inner rotating shaft, 13. Inner turntable, 13-1. Jack, 13-2. Inner rod, 14. Slider, 14-1. Stopper part, 15. Inner connecting rod, 15 -1, the first long groove, 16, the slider, 16-1, the lower depression, 16-11, the lower force surface, 16-2, the upper depression, 16-21, the upper force surface, 17, the connection Frame, 18, the second dead bolt, 19, the outer connecting rod, 19-1, the second long groove, 20, the lock cylinder rod, 20-1, the limit portion, 20-11, the slope;

21, vertical bar, 22, cross bar, 23, deadbolt spring, 24, base, 25, rotating sleeve, 26, outer torsion spring, 27, axial spring, 28, inner shell, 29, inner torsion spring, 30 , lock cylinder spring, 31, password key, 32, connecting rod.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These accompanying drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic way, so it only shows the composition, direction and reference (for example, up, down, left, right, etc.) related to the utility model May only be used to aid in the description of features in the drawings. Accordingly, the following Detailed Description is not to be taken in a limiting sense, and the scope of claimed subject matter should be defined only by the appended claims and their equivalents.

Example 1

As shown in Figure 1-8, an unlocking mechanism of a combination lock, the combination lock includes a lock case 1, a lock cylinder plate 2 located in the lock case 1, a bottom plate 3 arranged on the lock case 1 and a sliding arrangement on the bottom plate 3 The first deadbolt 4, the lock core plate 2 has a plurality of lock core blocks 5, and the bottom plate 3 is slidably provided with a reset plate 6, and the reset protrusion 6-1 on the reset plate 6 can move the lock core blocks when the reset plate 6 moves upwards. 5 Reset, the unlocking mechanism includes an outer door handle 8, an inner turntable 13 and an inner door handle 11, the inner turntable 13 is rotatably arranged on the base plate 3, the inner turntable 13 is fixedly connected with the inner door handle 11 through the inner rotating shaft 12, and the outer door handle 8 There is an outer rotating shaft 9 on the top, the outer rotating shaft 9 is arranged to rotate relative to the lock housing 1, and can carry out axial displacement relative to the inner rotating disc 13, the end of the outer rotating shaft 9 close to the inner rotating shaft 12 has a plug-in part 9-1, and the inner rotating disc 13 is provided with There is a socket 13-1 matching the socket part 9-1, and the socket part 9-1 is opposite to the socket 13-1;

The first lock tongue 4 is connected with the transmission of the inner turntable 13. When the inner turntable 13 rotates, it can provide the driving force for the retraction of the first lock tongue 4. When the insertion part 9-1 is inserted into the socket 13-1, the outer shaft 9 is circumferentially fixed on the inner rotating disk 13, and the cross-section of the insertion part 9-1 is non-circular (such as polygonal or elliptical).

The transmission connection relationship between the inner turntable 13 and the first dead bolt 4 is specifically as follows: the inner turntable 13 is eccentrically provided with an inner rod 13-2, the first dead bolt 4 is fixed with a slide bar 14, and the slide bar 14 slides with the bottom plate 3 connection, the bottom plate 3 is provided with an inner connecting rod 15, the middle part of the inner connecting rod 15 is rotated and arranged on the bottom plate 3, and the end of the sliding rod 14 far away from the first deadbolt 4 is provided with a stop rod part 14-1, and the inner connecting rod 15 The tail end of the inner link 15 is located between the stop rod part 14-1 and the first lock tongue 4, and the first end of the inner connecting rod 15 is provided with a first long groove 15-1, and the inner rod 13-2 is located in the first long groove 15-1. ; When the inner turntable 13 is used to rotate, the inner rod 13-2 on the inner turntable 13 will drive the inner connecting rod 15 to rotate, so that the inner connecting rod 15 will move the retaining rod part 14-1 to retract the first dead bolt 4, to achieve unlocking.

In order to improve the safety factor, a slider 16 is slidably arranged on the bottom plate 3, and a second deadbolt 18 is fixed on the slider 16 through a connecting frame 17, and the first deadbolt 4 and the second deadbolt 18 are located on the same side of the lock housing 1. , the lower surface of the slider 16 is provided with a lower concave portion 16-1, and the lower concave portion 16-1 has two lower force-bearing surfaces 16-11 for the tail end of the inner connecting rod 15 to abut against, and the tail end of the inner connecting rod 15 The end is located between the two lower bearing surfaces 16-11;

The main purpose of setting the two lower bearing surfaces 16-11 is to directly control the expansion and contraction of the second bolt 18 when the inner door handle 11 is turned inside the house, specifically: when the inner turntable 13 rotates counterclockwise, the inner turntable 13 Push the lower force-bearing surface 16-11 on the slider 16 close to the end of the second deadbolt 18 through the inner connecting rod 15, so that the second deadbolt 18 is stretched out, thereby realizing closing the combination lock; when the inner turntable 13 clockwise When rotating, the inner turntable 13 pushes the lower force-bearing surface 16-11 on the slider 16 away from the end of the second dead bolt 18 through the inner connecting rod 15, so that the second dead bolt 18 is retracted, and the inner connecting rod 15 will also simultaneously Push the blocking rod part 14-1 to make the first lock tongue 4 retract, so as to realize the opening of the combination lock.

In order to realize that only the second bolt 18 can be stretched out through the outer door handle 8 outside the house and cannot be retracted, an outer turntable 10 is sleeved on the insertion part 9-1, and the outer turntable 10 is circumferentially fixed on the insertion part 9-1. 1, an outer rod 10-1 is eccentrically arranged on the outer rotating disk 10, and an outer connecting rod 19 is arranged between the outer rod 10-1 and the slider 16, and the middle part of the outer connecting rod 19 is arranged in the lock housing 1 for relative rotation. The first end of the outer connecting rod 19 is provided with a second long groove 19-1, the outer rod 10-1 is located in the second long groove 19-1, and the upper surface of the slider 16 is provided with an upper concave portion 16-2, and the upper concave portion One end of 16-2 close to the second deadbolt 18 has an upper force-bearing surface 16-21 for the tail end of the outer connecting rod 19 to abut against; when the outer turntable 10 rotates counterclockwise, the outer turntable 10 is pushed by the outer link 19 Upper force-bearing surface 16-21 on the slide block 16 makes the second dead bolt 18 stretch out, thereby realizes closing of this combination lock; The outer connecting rod 19 abuts, so that the second sliding block 16 cannot be retracted outdoors by rotating the outer turntable 10 , that is, the second dead bolt 18 cannot be retracted outdoors by driving the outer turntable 10 .

In this embodiment, it also includes a lock core rod 20, one end of the lock core rod 20 is fixedly connected to the lock core plate 2, and the other end is provided with a limiting part 20-1, and the upper surface of the limiting part 20-1 is a slope surface 20-1. 11. The limiting part 20-1 is blocked above the socket 13-1, the insertion part 9-1 is facing the slope 20-11 of the limiting part 20-1, and the upper surface of the slope 20-11 gradually down slope;

When the cipher group of coded lock was not input or input wrongly, the lock core block 5 on the lock core plate 2 was stuck in the first plate 7 above the lock core plate 2, and the lock core plate 2 was locked under the effect of the lock core block 5 If it cannot be moved, then the socket part 9-1 of the outer rotating shaft 9 on the outer door handle 8 cannot enter the jack 13-1 to drive the inner turntable 13 to rotate, so that the first dead bolt 4 and the second locking bolt 4 cannot be driven. Two dead bolts 18 are unlocked;

After the password group is input correctly, all lock core pieces 5 are all pushed to not hindering the movement of lock core plate 2, just can push outer door handle 8 in the direction of inner rotating disk 13 this moment, block at jack 13-1 place Under the cooperation of the slope surface 20-11 on the limiting part 20-1 and the insertion part 9-1, the lock cylinder rod 20 will be displaced together with the lock cylinder plate 2 to realize the smooth entry of the insertion part 9-1. into the jack 13-1, then turn the outer door handle 8 to drive the inner turntable 13 to rotate together, and the inner rod 13-2 on the inner turntable 13 will drive the inner connecting rod 15 to rotate, so that the inner connecting rod 15 will move the stop lever part 14-1, so that the first bolt 4 and the second bolt 18 are retracted to realize unlocking;

In order to realize that the lock core plate 2 can automatically reset after being pushed by the insertion part 9-1, a lock core spring 30 is sleeved on the lock core rod 20, and one end of the lock core spring 30 is against the support 3-2 of the base plate 3 , the other end is against the limit part 20-1, and under the action of the plug-in part 9-1, when the lock cylinder plate 2 moves away from the inner turntable 13, the lock cylinder spring 30 is in a compressed state, and the plug-in After the part 9-1 is disengaged from the socket 13-1, the limit part 20-1 on the lock cylinder rod 20 loses the blocking of the insertion part 9-1, and under the action of the lock cylinder spring 30, the lock cylinder spring 30 will push Lock core rod 20 resets, thereby lock core plate 2 is reset, and only after lock core plate 2 returns to original position, reset plate 6 just can move up, otherwise, the reset protrusion 6-1 on the reset plate 6 will touch against On the lock cylinder plate 2, the reset plate 6 is hindered from moving upwards.

For convenience on the outer door handle 8, the reset plate 6 can be controlled to move up, so that the lock core block 5 is reset.

Specifically: one side of the outer peripheral surface of the outer turntable 10 is provided with a horizontal groove 10-2, and the other side is provided with a chute 10-3 communicating with the horizontal groove 10-2. At the same axial position of the chute 10-3, the extension path of the chute 10-3 gradually inclines upwards along the circumference of the outer turntable 10, and a vertical rod 21 is installed on the bottom plate 3 to slide up and down, and a cross rod 22 is fixed on the top of the vertical rod 21. An outer reset rod 6-2 is fixed on the reset plate 6, and an end of the outer reset rod 6-2 near the cross bar 22 is located directly above the cross bar 22; when the outer door handle 8 rotates until the cross bar 22 moves along the chute 10-3 , the cross bar 22 will gradually rise along the chute 10-3, thereby the outer reset rod 6-2 is supported by the cross bar 22, and the reset plate 6 is moved up together, thereby realizing the reset of the lock core block 5; and the outer door When the handle 8 is rotated until the cross bar 22 moves along the horizontal groove 10-2, the cross bar 22 remains still.

In order to facilitate the automatic extension of the first dead bolt 4, the slide bar 14 is covered with a dead bolt spring 23, the base plate 3 is fixed with a mounting seat 3-1, the slide bar 14 passes through the mounting seat 3-1, and the dead bolt spring 23 One end of one end is against the mounting seat 3-1, and the other end is against the first deadbolt 4; when the first deadbolt 4 is retracted, the deadbolt spring 23 is in a compressed state, so that the blocking rod part 14-1 loses the inner connection After the driving force of the rod 15, the dead bolt spring 23 can automatically stretch out the first dead bolt 4 under the action of its own elastic force.

In order to realize that the outer door handle 8 can automatically reset after being operated, a base 24 is fixed in the lock housing 1, and the outer rotating shaft 9 passes through the base 24, and the outer rotating shaft 9 is fixed with a rotating sleeve 25 in the upper direction, and the rotating sleeve 25 is connected to the base. The seat 24 is rotationally connected, the rotating sleeve 25 is provided with an outer torsion spring 26, one free end of the outer torsion spring 26 is against the rotating sleeve 25, and the other free end is against the base 24, and the outer rotating shaft 9 is sleeved with a Axial spring 27, one end of axial spring 27 is fixed on the lock housing 1, and the other end is fixed on the base 24; By the setting of outer torsion spring 26, outer door handle 8 can be reset automatically after rotation, and axial spring 27 is that after the outer door handle 8 makes its plugging portion 9-1 move toward the inner rotating disk 13, the plugging portion 9-1 can automatically bounce off from the jack 13-1.

In order to realize the automatic reset of the inner door handle 11 after operation, further, an inner shell 28 is provided at the end of the bottom plate 3 away from the lock shell 1, the inner rotating shaft 12 passes through the inner shell 28, and an inner torsion spring 29 is arranged on the inner rotating shaft 12, One free end of the inner torsion spring 29 abuts against the inner casing 28, and the other free end abuts against the inner shaft 12; when the inner door handle 11 is rotated, the inner torsion spring 29 will accumulate force, thereby realizing the inner door handle 11 After losing the effect of manpower, the inner door handle 11 resets automatically under the effect of the inner torsion spring 29.

In addition, there are through holes 2-1 corresponding to the lock core blocks 5 in the lock core plate 2, and the lock core blocks 5 are fitted in the corresponding through holes 2-1 one by one, and all the locks in the through holes 2-1 The core block 5 hovers in the through hole 2-1 under the friction between it and the through hole 2-1, and only when an external force is applied, the lock core block 5 will be displaced relative to the through hole 2-1 , the combination key 31 in the combination lock is equipped with a connecting rod 32 separately, when the combination key 31 is pressed, the connecting rod 32 where the combination key 31 is located will correspondingly push the lock core block 5 to move down to disengage from the first plate 7; and After the lock core block 5 moves down, it is necessary to use the reset plate 6 to move up, and the reset protrusion 6-1 on the reset plate 6 can push the lock core block 5 to move upward, and reset to the clamping column on the lock core block 5 to lock again. on the first plate 7.

Its working principle of the unlocking mechanism of the combination lock of the present utility model is as follows:

As there is a first plate 7 above the lock core plate 2, the clamping column 5-1 on the lock core block 5 is stuck on the first plate 7, hindering the lateral movement of the lock core plate 2, after the password of the combination lock is pressed, The lock core block 5 on the lock core plate 2 can move down, so that the clamp post 5-1 on the lock core block 5 is separated from the first plate 7, so that the lock core plate 2 can be moved laterally; After the input, all the lock core blocks 5 are pushed to not hinder the movement of the lock core plate 2, and at this moment, the outer door handle 8 can be pushed in the direction of the inner turntable 13 to block the limit portion 20- at the jack 13-1 place. 1 Under the cooperation of the slope surface 20-11 on it and the insertion part 9-1, the lock cylinder rod 20 will be displaced together with the lock cylinder plate 2, so that the insertion part 9-1 can smoothly enter the socket 13-1 1, then turn the outer door handle 8 to drive the inner turntable 13 to rotate together, and the inner rod 13-2 on the inner turntable 13 will drive the inner connecting rod 15 to rotate, so that the inner connecting rod 15 will move the stop rod part 14-1, The first bolt 4 and the second bolt 18 are retracted to realize unlocking.

The above-mentioned ideal embodiment according to the utility model is an inspiration, and through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (10)

1. an unlocking mechanism of a combination lock, the combination lock comprises a lock housing (1), a lock core plate (2) positioned in the lock housing (1), a base plate (3) arranged on the lock housing (1) and The first deadbolt (4) is slidably arranged on the base plate (3), the lock core plate (2) has a plurality of lock cylinder blocks (5), and the reset plate (6) is slidably provided on the base plate (3). ), the reset plate (6) can reset the lock core block (5) when moving upwards, it is characterized in that: the unlocking mechanism includes an outer door handle (8), an inner turntable (13) and an inner door handle (11), The inner turntable (13) is rotatably arranged on the bottom plate (3), the inner turntable (13) is fixedly connected with the inner door handle (11) through the inner rotating shaft (12), and the outer door handle (8) has an outer Rotating shaft (9), the outer rotating shaft (9) is arranged to be rotated relative to the lock housing (1), and can be axially displaced relative to the inner rotating disc (13), the end of the outer rotating shaft (9) close to the inner rotating shaft (12) It has an insertion part (9-1), and a socket (13-1) matching the insertion part (9-1) is opened on the inner turntable (13), and the insertion part (9-1) Opposed to the jack (13-1); The first lock tongue (4) is in transmission connection with the inner turntable (13). When the inner turntable (13) rotates, it can provide driving force for the retraction of the first lock tongue (4). When the insertion part (9- 1) When inserted into the socket (13-1), the outer rotating shaft (9) is circumferentially fixed on the inner rotating disk (13). 2. The unlocking mechanism of the combination lock according to claim 1, characterized in that: an inner rod (13-2) is eccentrically arranged on the inner turntable (13), and an inner rod (13-2) is fixed on the first bolt (4) Slide bar (14), described slide bar (14) is slidably connected with base plate (3), and described base plate (3) is provided with inner connecting rod (15), and the middle part of described inner connecting rod (15) is rotated and arranged On the bottom plate (3), the end of the slide bar (14) away from the first deadbolt (4) is provided with a bar stopper (14-1), and the tail end of the inner connecting rod (15) is located at the stop bar part (14-1) and the first lock tongue (4), the head end of the inner connecting rod (15) is provided with a first long groove (15-1), and the inner rod (13-2) is located at the first In a long groove (15-1). 3. The unlocking mechanism of the combination lock according to claim 2, characterized in that: a slider (16) is slidably arranged on the bottom plate (3), and the slider (16) is fixed by a connecting frame (17) There is a second dead bolt (18), the first dead bolt (4) and the second dead bolt (18) are all located on the same side of the lock housing (1), and the lower surface of the slider (16) is provided with the following The recessed part (16-1), the lower recessed part (16-1) has two lower force bearing surfaces (16-11) for the tail end of the inner connecting rod (15) to abut against, and the inner connecting rod ( 15) The tail end is positioned between two lower bearing surfaces (16-11). 4. The unlocking mechanism of a combination lock according to claim 3, characterized in that: an outer turntable (10) is sheathed on the insertion part (9-1), and the outer turntable (10) is circumferentially fixed on On the insertion part (9-1), an outer rod (10-1) is eccentrically arranged on the outer turntable (10), and an outer connecting rod (10-1) is provided between the outer rod (10-1) and the slider (16). Rod (19), the middle part of the outer connecting rod (19) is relatively rotatably arranged in the lock housing (1), and the first end of the outer connecting rod (19) is provided with a second long groove (19-1), The outer rod (10-1) is located in the second long groove (19-1), and the upper surface of the slider (16) is provided with an upper depression (16-2), and the upper depression (16-2) 2) The end close to the second lock tongue (18) has an upper force bearing surface (16-21) for the tail end of the outer connecting rod (19) to abut against. 5. The unlocking mechanism of the combination lock according to claim 1, characterized in that: it also includes a lock core rod (20), one end of the lock core rod (20) is fixedly connected with the lock core plate (2), and the other end A limiter (20-1) is provided, the upper surface of the limiter (20-1) is a slope (20-11), and the limiter (20-1) blocks the socket (13-1 ), the insertion part (9-1) is facing the slope (20-11) of the limit part (20-1), and the upper surface of the slope (20-11) gradually slopes downward . 6. The unlocking mechanism of the combination lock according to claim 4, characterized in that: the outer turntable (10) is in drive connection with the reset plate (6), and when the outer turntable (10) rotates, it can be the reset plate (6). ) provides the driving force for the upward movement. 7. The unlocking mechanism of the combination lock according to claim 6, characterized in that: one side of the outer peripheral surface of the outer turntable (10) is provided with a horizontal groove (10-2), and the other side is provided with a horizontal groove (10-2). (10-2) connected chute (10-3), the extension path of the horizontal trough (10-2) is on the same axial position of the outer turntable (10), the extension of the chute (10-3) The path is gradually inclined upward along the circumference of the outer turntable (10), and a vertical bar (21) is installed on the bottom plate (3) to slide up and down, and a horizontal bar (22) is fixed on the top of the vertical bar (21). An outer reset rod (6-2) is fixed on the reset plate (6), and one end of the outer reset rod (6-2) close to the cross bar (22) is located directly above the cross bar (22). 8. The unlocking mechanism of a combination lock according to claim 2, characterized in that: a bolt spring (23) is sheathed on the slide bar (14), and a mounting seat (3) is fixed on the bottom plate (3) -1), the slide bar (14) passes through the mounting base (3-1), one end of the deadbolt spring (23) is against the mounting base (3-1), and the other end is against the first deadbolt ( 4) on. 9. The unlocking mechanism of the combination lock according to claim 1, characterized in that: a base (24) is fixed inside the lock case (1), the outer shaft (9) passes through the base (24), The outer rotating shaft (9) is fixed with a rotating sleeve (25) in the circumferential direction, and the rotating sleeve (25) is connected to the base (24) in rotation, and an outer torsion spring (26) is sleeved on the rotating sleeve (25). ), one free end of the outer torsion spring (26) is against the rotating sleeve (25), the other free end is against the base (24), and the outer shaft (9) is sleeved with an axial spring (27), one end of the axial spring (27) is fixed on the lock case (1), and the other end is fixed on the base (24). 10. The unlocking mechanism of the combination lock according to claim 1, characterized in that: the end of the bottom plate (3) away from the lock housing (1) is provided with an inner housing (28), and the inner shaft (12) passes through The inner shell (28), the inner rotating shaft (12) is provided with an inner torsion spring (29), one free end of the inner torsion spring (29) is against the inner shell (28), and the other free end is relatively against On the inner rotating shaft (12).