CN209837971U - Intelligent lock body with bolt running at low load - Google Patents

Abstract

The utility model discloses an intelligent lock body of spring bolt low-load operation, install in the door, including the door hasp on the door frame, the lock body outside includes the shell, and one side of shell includes the lateral wall end, the lateral wall end includes a plurality of telescopic holes, include sub-lock, spring bolt and keeper in the lock body, the head of spring bolt and the card end of keeper can stretch out the telescopic hole stretches into in the door hasp, when the card end stretches into in the door hasp, the door is in the lock door state, the intelligent lock body include with the third fixed axle of shell connect and with the rotatable stopper of third fixed axle as the axle center, and a plurality of receive the rotatable drive wheel of handle drive; the one end of stopper can with the spring bolt contact, the other end can with the drive wheel contact, just the stopper with the one end of drive wheel contact includes the cylinder, the cylinder can with sub-lock contact.

Description

Intelligent lock body with bolt running at low load

Technical Field

The utility model belongs to the technical field of the intelligence lock and specifically relates to an intelligence lock body of spring bolt low-load operation.

Background

With the continuous development of science and technology, the intelligent lock is widely applied to ordinary families.

A door bolt used for locking a door and a lock tongue used for controlling the opening and closing of the door are arranged in a common intelligent lock body, and the locking and releasing of the door bolt and the lock tongue are partially realized by driving a handle. The applicant has applied for an invention patent with a Chinese patent application number of 201810515174.X, which discloses a mortise lock which does not generate load when a door bolt operates, and the mortise lock mainly comprises: the door lock includes a bolt, a sub-lock, a latch bolt locking unit, a bolt operating unit, an operating member, a bolt operating member, an insert, a guide groove, a driven gear, and a controller. When the lock body in the patent is opened, the bolt keeps a no-load state when rotating, so that the action of the bolt is more stable, and the phenomenon that the bolt is not beneficial to the operation of the bolt, such as the bolt is blocked when the door bolt is unlocked, can be avoided.

However, the sub-lock and the lock tongue in the patent need to move under the driving of the bolt limiting block in the operation process, so that the lock tongue has a large load in the actual operation process, so that the lock tongue may be jammed in operation, and the like, and a door cannot be normally opened, which is very unfavorable for users to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem how to compensate the defect of above-mentioned prior art, provide an intelligent lock body of spring bolt low-load operation.

The technical problem of the utility model can be solved through following technical scheme:

an intelligent lock body with a lock tongue running at a low load is arranged in a door, a door frame comprises a door lock catch, the outer side of the lock body comprises a shell, one side of the shell comprises a side wall end, the side wall end comprises a plurality of telescopic holes, a sub-lock, the lock tongue and a door bolt are arranged in the lock body, the head of the lock tongue and the clamping end of the door bolt can extend out of the telescopic holes and extend into the door lock catch, when the clamping end extends into the door lock catch, the door is in a door locking state, and the intelligent lock body comprises a limiting block which is connected with a third fixed shaft of the shell and can rotate by taking the third fixed shaft as an axis and a plurality of rotatable driving wheels driven by a handle; the one end of stopper with the spring bolt contact, the other end with the drive wheel contact, just the stopper with the one end of drive wheel contact includes the cylinder, the cylinder can with sub-lock contact.

Furthermore, the limiting block comprises a fixing part, a shaft hole is formed in the fixing part, the roller is arranged in the shaft hole of the fixing part, and one side, which can be contacted with the roller, of the lock tongue comprises a plane inclined surface and a clamping groove with a certain radian; when the roller is accommodated in the clamping groove, the position of the lock tongue is fixed.

Further, the fixed part has the same diameter as the roller; when the fixing part is accommodated in the clamping groove, the position of the lock tongue is also fixed.

Furthermore, the lock tongue comprises a lock tongue protrusion, and the limiting block comprises a containing groove matched with the shape of the lock tongue protrusion; when the inclined plane is in contact with the roller, under the action of external force, the inclined plane is in contact with the roller, so that the lock tongue can move inwards, the lock tongue protrusion moves inwards along with the lock tongue protrusion and extends into the accommodating groove, and the position of the limiting block changes along with the lock tongue protrusion.

Further, the sub-lock comprises a sub-lock body in an L shape, and the sub-lock body is in contact with the cylinder; when the sub-lock extends out of the shell completely, the sub-lock body drives the cylinder to enable the limiting block to rotate, the inclined plane is in contact with the limiting block, the position of the lock tongue can be moved, and the door is in a door opening state.

Further, the limiting block comprises a pushing part, and the driving wheel comprises a static groove, a groove and a pushing groove which can be in contact with the pushing part; when the pushing part is contacted with the static groove and the groove, the clamping groove is contacted with the limiting block, and the position of the lock tongue is fixed; when the pushing part is contacted with the pushing groove, the inclined plane is contacted with the limiting block, and the lock tongue can move.

Furthermore, the driving wheel comprises a driving shaft connected with the handle and a driving shaft accommodating groove for accommodating the driving shaft, the handle drives the driving shaft to rotate, and then drives the driving wheel to rotate, so that the position of the driving wheel contacted with the limiting block is changed.

Furthermore, the limiting block comprises a limiting block spring fixed on a second fixed shaft in the shell, one end of the limiting block spring is connected with the third fixed shaft, and the other end of the limiting block spring is connected with a spring fixed column positioned in the center of the limiting block; the stopper spring causes the stopper to have a force that contacts the drive wheel at all times.

Further, the bolt comprises a bolt spring, and the sub-lock comprises a sub-lock spring; the bolt spring and the sub-lock spring enable the bolt and the sub-lock to always have force extending out of the shell.

Furthermore, the lock tongue comprises a lock tongue head part with an arc-shaped edge, a lock tongue body and lock tongue stop blocks which are symmetrical on the upper surface and the lower surface, and the sub lock comprises a sub lock head part with an arc-shaped edge, a sub lock body and sub lock stop blocks which are symmetrical on the upper surface and the lower surface; the bolt head and the sub-lock head can extend out of or retract into the telescopic hole and can rotate; the lock tongue dog and the sub-lock dog are used for preventing the lock tongue and the sub-lock from being separated from the telescopic hole at the side wall end, and when the lock tongue and the sub-lock rotate, the lock tongue dog and the sub-lock dog are rotation central points during rotation.

Compared with the prior art, the beneficial effect that this reaches is: intelligence lock body, its spring bolt is little in the resistance that receives in operation, the load is low, it is convenient to operate, and then makes opening and closing of door smooth and easy, and simple structure, low cost, the batch production of being convenient for.

Drawings

Fig. 1 is an overall appearance exploded schematic view of a lock body of the intelligent lock for low load operation of a lock tongue of the utility model;

fig. 2 is a side view of the internal structure of the intelligent lock body for low load operation of the lock tongue of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2;

fig. 4 is an explosion diagram of the internal structure of the intelligent lock body of the invention for operating the lock tongue at low load;

FIG. 5 is an enlarged view of the point B in FIG. 4;

fig. 6 is a schematic view of a sub-lock structure of the intelligent lock body of the lock bolt low load operation of the present invention;

fig. 7 is a schematic diagram of a bolt structure of a bolt low-load operation intelligent lock body of the present invention;

fig. 8 is a spring bolt side view of the intelligent lock body for low load operation of the spring bolt of the present invention;

fig. 9 is a schematic structural diagram of a limiting block of the intelligent lock body for low-load operation of the lock tongue of the present invention;

fig. 10 is a side view of a stopper of the intelligent lock body for low load operation of the lock tongue of the present invention;

fig. 11 is a schematic structural view of a driving wheel of the intelligent lock body for the low load operation of the lock tongue of the present invention;

fig. 12 is a side view of a driving wheel of a lock body of the intelligent lock operated by a bolt under low load of the utility model;

fig. 13 is a schematic view and an enlarged view of a door locking state of the intelligent lock body of the bolt low load operation of the present invention;

fig. 14 is a schematic diagram and an enlarged view of the door opening process X of the intelligent lock body of the bolt low load operation of the present invention;

figure 15 is the utility model discloses a door opening process Y sketch map and enlarger of spring bolt low-load operation intelligence lock body

Fig. 16 is a schematic view and an enlarged view of a door opening process Z of the intelligent lock body of the bolt low load operation of the present invention;

fig. 17 is the door-opening state diagram and the enlarged view of the intelligent lock body of the bolt low-load operation of the present invention.

Reference numerals in the figures

The lock comprises a shell 1, a side wall end 11, a first telescopic hole 11a, a second telescopic hole 11b, a third telescopic hole 11c, a door lock catch 12, a first lock hole 12a, a second lock hole 12b, an inner wall 13, a spring fixing frame 14, a first fixing shaft 15, a second fixing shaft 16, a third fixing shaft 17, a bolt guide groove 18, a sub-lock 2, a sub-lock head 21, a sub-lock body 22, a sub-lock bracket 221, a sub-lock spring 23, a sub-lock stopper 24, a bolt 3, a bolt head 31, a bolt body 32, a clamping groove 32a, an inclined surface 32b, a bolt protrusion 33, a bolt guide block 34, a bolt spring 35, a bolt stopper 36, a stopper 4, a pushing part 41, a fixing part 42, a clearance groove 43, a containing groove 44, a column 45, a roller 46, a stopper spring 47, a fixing hole 48, a spring fixing column 49, a driving wheel 5, a driving shaft 51, a static groove 52, a groove 53, a pushing, Bolt 6, card end 61.

Detailed Description

For convenience of understanding, the drawings in the specification have been provided with various components on the drawings enlarged (thick) or reduced (thin), but this is not intended to limit the scope of the present invention.

The singular forms "a", "an", and "the" include plural referents and vice versa

The words used in this specification are words of description used in describing embodiments of the invention, but are not intended to limit the invention.

The terms first, second, etc. are used herein to distinguish between different elements, but these should not be limited by the order of manufacture, and the names may differ between the detailed description of the invention and the claims.

The natural state of the utility model, namely, the state of each component under no external force action.

The present invention will be further described below based on preferred embodiments with reference to the accompanying drawings.

Please refer to fig. 1-3, the present invention provides an intelligent lock body with a lock tongue operated under low load, which is installed in a door, and includes a door lock catch 12 on a door frame, the lock body includes a housing 1 outside, one side of the housing 1 includes a side wall end 11, the side wall end 11 includes a plurality of retractable holes, the lock body includes a sub-lock 2, a lock tongue 3 and a door bolt 6, a head 31 of the lock tongue 3 and a clamping end 61 of the door bolt 6 extend out of the retractable holes into the door lock catch 12, when the clamping end 61 extends into the door lock catch 12, the door is in a door locking state.

Specifically, the door lock 12 includes a first lock hole 12a and a second lock hole 12b, and the side wall 11 includes a first telescopic hole 11a, a second telescopic hole 11b, and a third telescopic hole 11 c. The clamping end 61 of the door bolt 6 extends out of the telescopic hole 11a and extends into the first lock hole 12a, the head 31 of the bolt 3 extends out of the telescopic hole 11c and extends into the second lock hole 12b, the sub-lock head 21 of the sub-lock 2 can extend out of the telescopic hole 11b, but a lock hole is not reserved in the door lock buckle position for the sub-lock head 21, so that when the lock body is closed with the door frame and the door is in a door locking state, the sub-lock head 21 contacts the door lock buckle 12, but the whole sub-lock 2 contracts towards the inner side of the lock body under the pressure of the door lock buckle 12 and is in a compressed state. When the lock body is separated from the door lock catch 12 and the door is in a door opening state, the sub-lock head 21 has no external pressure and extends out of the lock body.

Referring to fig. 1 to 3, the intelligent lock body further includes a limiting block 4 and a driving wheel 5.

Referring to fig. 1 to 5, the housing 1 is provided with an inner wall 13, a spring fixing frame 14, a first fixing shaft 15, a second fixing shaft 16, a third fixing shaft 17, and a locking tongue guide groove 18.

Referring to fig. 1 to 6, the sub-lock 2 includes a sub-lock head 21 capable of extending out of and into the housing 1, a sub-lock body 22 connected to the sub-lock head 21 in an L shape, a sub-lock spring 23 sleeved outside the sub-lock body 22, and a sub-lock stopper 24 located on the sub-lock head 22 and protruding out of a side surface of the sub-lock body 22, wherein the sub-lock body 22 is provided with a sub-lock bracket 221.

After assembly, the head part 22 of the sub-lock can extend out of the second telescopic hole 11b, and the stop block 24 of the sub-lock is positioned at the inner side of the second telescopic hole 11b to prevent the sub-lock 2 from separating from the shell 1; the sub-lock spring 23 is located between the sub-lock bracket 221 and the spring fixing frame 14, and at this time, since the spring fixing member 14 cannot move, the sub-lock 2 always has a force of extending out of the housing 1 under the natural tension of the sub-lock spring 23.

In this embodiment, the sub-lock spring 23 is a compression spring.

Referring to fig. 1 to 5 and 7 to 8, the latch 3 includes a latch head 31 extending out of and into the third telescopic hole 11c, a latch body 32 connected to the latch head 31, a latch protrusion 33 protruding out of the latch body 32, a latch guide 34 engaged with the latch guide groove 18, a latch spring 35 fixed to the first fixing shaft 15, and a latch stopper 36 located at the latch head 31 and protruding out of a side surface of the latch head 31. The bolt body 32 is provided with a slot 32a contacting with the limit block 4 and having a certain radian and a plane inclined surface 32 b.

After assembly, the bolt head 31 can extend out of the third telescopic hole 11c, and the bolt stop 36 is positioned inside the third telescopic hole 11c to prevent the bolt 3 from being separated from the shell 1; the bolt spring 35 is fixed on the first fixed shaft 15, one end of the bolt spring is connected with the inner wall 13, the other end of the bolt spring is connected with the bolt 3, and after the bolt spring 35 is connected, the bolt 3 always has the force stretching out of the shell 1 under the action of the natural tension of the bolt spring 35; the bolt guide block 34 is matched with the bolt guide groove 18, so that the bolt 3 always moves transversely under the limit of the bolt guide groove 18.

In this embodiment, the latch spring 35 is a torsion spring.

Referring to fig. 1 to 5 and 9 to 10, the stopper 4 includes a pushing portion 41 contacting with the driving wheel 5, a fixing portion 42 contacting with the bolt housing 32, a clearance groove 43 for accommodating the bolt spring 35, an accommodating groove 44 for accommodating the bolt protrusion 33, a cylinder 45 contacting with the sub-lock housing 22, a roller 46, a stopper spring 47 fixed to the second fixing shaft 16, a fixing hole 48 for accommodating the third fixing shaft 17, and a spring fixing post 49 located at the middle of the stopper 4.

After the third fixed shaft 17 passes through the fixed hole 48, the stopper 4 can rotate around the third fixed shaft 17.

The fixed part 42 is provided with a shaft hole, the roller 46 is arranged in the shaft hole of the fixed part 42, and in the embodiment, the diameter of the fixed part 42 is the same as that of the roller 46; that is, the roller 46 and the fixing portion 42 can contact the bolt body 32 at the same time and the contact effect is the same. Preferably, the roller 46 is in contact with the deadbolt body 32.

The limiting block spring 47 is fixed on the second fixing shaft 16, one end of the limiting block spring 47 is connected with the spring fixing shaft 49, the other end of the limiting block spring is connected with the third fixing shaft 17, and after connection, under the action of natural tension of the limiting block spring 47, the limiting block 4 always has clockwise rotation force. In this embodiment, the stopper spring 47 is a torsion spring.

In a natural state, the sub-lock 3 extends out of the side wall end 11, at this time, the roller 46 is in contact with the slot 32a, the slot 32a has a certain radian, so that the roller 46 is matched with the slot 32a, and the position of the sub-lock 3 is fixed; when the roller 46 rotates counterclockwise under the action of external force, the roller 46 slides out of the slot 32a and contacts with the inclined surface 32b, at this time, because the inclined surface 32b is a plane, if the sub-lock 3 extends into the housing 1 under the action of external force, the roller 46 cannot fix the position of the inclined surface 32b, and the position of the sub-lock 3 is no longer fixed and can freely enter and exit from the housing 1.

When the sub-lock 3 extends into the housing 1, the sub-lock 3 extends inward under the guiding action of the lock tongue guide groove 18, at this time, the limiting block 4 is driven by the inclined plane 32b to rotate counterclockwise, and when the sub-lock 3 slides into the top end of the lock tongue guide groove 18, the lock tongue protrusion 33 can be accommodated in the accommodating groove 44.

The cylinder 45 is in contact with the sub-lock body 22. Specifically, one end of the sub-lock body 22 can directly drive the cylinder 45.

Referring to fig. 3, the pushing portion 41 directly contacts with the driving wheel 5, and the cylinder 45 directly contacts with the sub-lock body 2, and when the sub-lock body 22 moves to the outside of the housing 1 only under the condition of considering the sub-lock 2 and the limiting block 4, the sub-lock body 22 can directly drive the cylinder 45 to rotate counterclockwise around the third fixing shaft 17 as the axis; when the sub-lock body 22 moves towards the inner side of the housing 1, the limiting block 4 will always contact the sub-lock body 22 under the tension of the limiting block spring 47, so that the limiting block 4 rotates clockwise synchronously with the third fixing shaft 17 as the axis.

Please refer to fig. 1 to 5 and fig. 11 to 12. The driving wheel 5 includes a driving shaft 51 connected to and driven by the handle, a stationary groove 52 contactable with the pushing portion 41, a recess 53, a pushing groove 54, and a driving shaft accommodating groove 55 for accommodating the driving shaft 51.

The handle rotates to drive the driving shaft 51 to rotate, and further drives the driving shaft accommodating groove 55 to rotate with the driving shaft 51 as an axis. Under the natural state, only considering the stopper 4 and the driving wheel 5, the pushing part 41 contacts with the static groove 52 and is clamped in the static groove 52, when the driving shaft 51 rotates clockwise, the driving wheel 5 is driven to rotate clockwise, the stopper 4 always contacts with the driving wheel 5 under the action of the stopper spring 47, along with the clockwise rotation of the driving wheel 5, the pushing part 41 slides into the groove 53 from the static groove 52, at this time, the position of the whole stopper 4 is kept unchanged because the degree of the groove 53 sunken in the driving wheel 5 is greater than that of the static groove 52; when the driving shaft 51 continues to rotate clockwise, the pushing portion 41 slides into the pushing groove 54 from the groove 53, and at this time, the pushing groove 54 protrudes from the stationary groove 52 and the groove 53 and protrudes from the driving wheel 5, so that the pushing groove 54 pushes the pushing portion 41, and the stopper 4 rotates counterclockwise.

Since the grooves 53 and the pushing grooves 54 are disposed vertically symmetrically, when the driving shaft 51 rotates counterclockwise, the driving stopper 4 is driven to rotate counterclockwise, which is not described herein.

It is right below that the utility model discloses intelligence lock body's work flow does further explanation.

Referring to fig. 2-3 and 13-17, the lock body of the intelligent lock of the present invention is mainly in 2 states, namely, a door locking state and a door opening state, and the process from the door locking state to the door opening state is called a door opening process.

Referring to fig. 13, when the lock body is in the door locking state, the locking end 61 extends into the first locking hole 12a, the locking tongue 3 extends into the second locking hole 12b, and the sub-lock 2 contacts the door lock 12 and is compressed to extend into the housing 1.

The pushing portion 41 of the stopper 4 is engaged with the stationary groove 52, and the roller 46 is engaged with the engaging groove 32a, at this time, the stopper 4 cannot move, so that the position of the latch tongue 3 is fixed.

When the door is opened, the handle is pressed to drive the driving wheel 5 to rotate. Referring to fig. 14, when the driving wheel 5 rotates until the pushing portion 41 is engaged with the recess 53, the door opening process X is performed.

At this time, the pushing portion 41 is engaged in the groove 53, so that the position of the pushing portion 41 is not changed, and the stopper 4 is not rotated, and at this time, the lock body cannot be opened.

Continuing to press the handle to drive the driving wheel 5 to rotate, referring to fig. 15, when the driving wheel 5 rotates until the pushing portion 41 is engaged with the pushing slot 54, the door opening process Y is performed.

At this time, the card end 61 protrudes into the inside of the housing 1. The pushing portion 41 is carried by the pushing groove 54 so that the stopper 4 rotates counterclockwise. And the roller 46 rotates counterclockwise, the roller 46 slides out of the slot 32a and contacts the ramp 32 b. So that the position of the bolt 3 is not fixed any more, and the bolt 3 can slide towards the inner side of the shell 1. The lock body has no part limit, and the lock body can be opened.

The door body is pushed to make the door body contact with the door lock catch 12 and leave the door lock catch 12, referring to fig. 16, when the door body is pushed to make the bolt 3 enter the inside of the casing 1, the door opening process Z is performed.

At this time, the latch bolt 3 slides out of the second locker 12b and is compressed by the door frame, so that the latch bolt 3 is pressed into the inside of the housing 1. In the pressing process, the bolt 3 slides towards the housing 1 under the guiding action of the bolt guide groove 18, the inclined surface 32b contacts the roller 46 and continues to slide towards the inner side, and the bolt protrusion 33 enters the accommodating groove 44 along with the roller, so that the whole limiting block 4 continues to rotate anticlockwise. The pushing portion 41 is disengaged from the pushing groove 54, and the sub-lock body 22 is disengaged from the cylinder 45.

At this time, as long as the door body is continuously pushed, the lock body is separated from the door lock catch 12, and the door enters the door opening state. Please refer to fig. 17 for a schematic diagram of the door opened state.

The lock body is separated from the door lock catch 12, and the bolt 3 recovers the state of extending out of the shell 1 under the action of a bolt spring 35 without the limitation of external force; the sub-lock 2 does not have the limitation of the door lock catch 12, extends out of the shell 1 under the action of the sub-lock spring 23, and the sub-lock body 22 contacts and presses the cylinder 45, so that the limiting block 4 keeps a state of rotating counterclockwise, the pushing part 41 cannot contact with the driving wheel 5, and the roller 46 keeps contacting with the inclined surface 32 b. The latch bolt 3 is not restrained. At the moment, the lock body is in a door opening state.

Above, the lock body is completed in the whole process from the door locking state to the door opening state.

The detailed description of the embodiments of the present invention has been presented, and it will be apparent to those skilled in the art that the present invention can be modified and modified without departing from the principles of the present invention, and the modifications and modifications also belong to the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides an intelligent lock body of spring bolt low-load operation, installs in the door, including door hasp (12) on the door frame, the lock body outside includes shell (1), and one side of shell (1) is including side wall end (11), side wall end (11) are including a plurality of telescopic hole, including sub-lock (2), spring bolt (3) and keeper (6) in the lock body, the head (31) of spring bolt (3) reach card end (61) protractile of keeper (6) telescopic hole stretches into in door hasp (12), work as card end (61) stretch into when in door hasp (12), the door is in the lock door state, its characterized in that:

the intelligent lock body comprises a limiting block (4) which is connected with a third fixed shaft (17) of the shell (1) and can rotate by taking the third fixed shaft (17) as an axis, and a plurality of driving wheels (5) which can rotate under the driving of a handle;

the one end of stopper (4) with spring bolt (3) contact, the other end with drive wheel (5) contact, just stopper (4) with the one end of drive wheel (5) contact includes cylinder (45), cylinder (45) can with sub-lock (2) contact.

2. The intelligent lock body of claim 1, wherein the bolt is operated at a low load;

the limiting block (4) comprises a fixing part (42), the fixing part (42) comprises a shaft hole, the roller (46) is arranged in the shaft hole of the fixing part (42),

one side of the lock tongue (3) which can be contacted with the roller (46) comprises a plane inclined plane (32b) and a clamping groove (32a) with a certain radian;

when the roller (46) is accommodated in the clamping groove (32a), the position of the bolt (3) is fixed.

3. The intelligent lock body of claim 2, wherein the bolt operates at a low load, and the intelligent lock body is characterized in that:

the fixed part (42) and the roller (46) have the same diameter;

when the fixing part (42) is accommodated in the clamping groove (32a), the position of the bolt (3) is also fixed.

4. The intelligent lock body of claim 2, wherein the bolt operates at a low load, and the intelligent lock body is characterized in that:

the lock tongue (3) comprises a lock tongue protrusion (33), and the limiting block (4) comprises a containing groove (44) matched with the lock tongue protrusion (33) in shape;

when the inclined surface (32b) is in contact with the roller (46), under the action of external force, the inclined surface (32b) is in contact with the roller (46) to enable the bolt (3) to move inwards, the bolt protrusion (33) moves inwards along with the bolt protrusion and extends into the accommodating groove (44), and the position of the limiting block (4) changes along with the bolt protrusion.

5. The intelligent lock body of claim 2, wherein the bolt operates at a low load, and the intelligent lock body is characterized in that:

the sub-lock (2) comprises an L-shaped sub-lock body (22), and the sub-lock body (22) is in contact with the cylinder (45);

when sub-lock (2) stretches out completely when shell (1), sub-lock organism (22) drive cylinder (45) make stopper (4) are rotatory, inclined plane (32b) with stopper (4) contact, spring bolt (3) position is portable, and the door is in the state of opening the door.

6. The intelligent lock body of claim 2, wherein the bolt operates at a low load, and the intelligent lock body is characterized in that:

the limiting block (4) comprises a pushing part (41), and the driving wheel (5) comprises a static groove (52), a groove (53) and a pushing groove (54) which can be in contact with the pushing part (41);

when the pushing part (41) is in contact with the static groove (52) and the groove (53), the clamping groove (32a) is in contact with the limiting block (4), and the locking bolt (3) is fixed in position;

when the pushing part (41) contacts with the pushing groove (54), the inclined surface (32b) contacts with the limiting block (4), and the lock tongue can move.

7. The intelligent lock body of claim 1, wherein the lock tongue operates at a low load, and the intelligent lock body is characterized in that:

the driving wheel (5) comprises a driving shaft (51) connected with the handle and a driving shaft accommodating groove (55) for accommodating the driving shaft (51),

the handle drives the driving shaft (51) to rotate, and further drives the driving wheel (5) to rotate, so that the position of the driving wheel (5) in contact with the limiting block (4) is changed.

8. The intelligent lock body of claim 1, wherein the lock tongue operates at a low load, and the intelligent lock body is characterized in that:

the limiting block (4) comprises a limiting block spring (47) fixed on a second fixing shaft (16) in the shell (1), one end of the limiting block spring (47) is connected with the third fixing shaft (17), and the other end of the limiting block spring is connected with a spring fixing column (39) located at the center of the limiting block (4);

the limiting block spring (47) enables the limiting block (4) to always have force contacting with the driving wheel (5).

9. The intelligent lock body of claim 1, wherein the lock tongue operates at a low load, and the intelligent lock body is characterized in that:

the bolt (3) comprises a bolt spring (35), and the sub-lock (2) comprises a sub-lock spring (23);

the bolt spring (35) and the sub-lock spring (23) enable the bolt (3) and the sub-lock (2) to always have force extending out of the shell.

10. The intelligent lock body of claim 1, wherein the lock tongue operates at a low load, and the intelligent lock body is characterized in that:

the lock tongue (3) comprises a lock tongue head (31) with an arc edge, a lock tongue body (32) and a lock tongue stop block (36) with symmetrical upper and lower surfaces,

the sub-lock (2) comprises a sub-lock head part (21) with an arc edge, a sub-lock body (22) and sub-lock stop blocks (24) which are symmetrical on the upper surface and the lower surface;

the bolt head (31) and the sub-lock head (21) can extend out of or retract into the telescopic hole and can rotate;

the lock tongue stopper (36) and the sub lock stopper (24) are used for preventing the lock tongue (3) and the sub lock (2) from being separated from the telescopic hole of the side wall end (11), and when the lock tongue (3) and the sub lock (2) rotate, the lock tongue stopper (36) and the sub lock stopper (24) are rotation central points during rotation.