CN112392328B

CN112392328B - Push rod type three-lock two-unlocking lockset and equipment with lock

Info

Publication number: CN112392328B
Application number: CN201910750861.4A
Authority: CN
Inventors: 马铮; 周晔; 陈家贤; 罗北雄
Original assignee: Sgsg Science & Technology Co ltd Zhuhai
Current assignee: Sgsg Science & Technology Co ltd Zhuhai
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2023-06-16
Anticipated expiration: 2039-08-14
Also published as: CN112392328A

Abstract

The utility model discloses a push rod type three-lock two-unlocking lockset and equipment with lock, belonging to the lockset technical field. The lock comprises a driving assembly (25), a base (2), three locks (21), a cantilever transmission assembly (41) and three push rod assemblies (18). The three locks (21) are fixedly arranged on the base (2), the cantilever transmission assembly (41) is provided with three free ends, the first ends of the three push rod assemblies (18) are in touch with the three free ends in a one-to-one correspondence manner, and the second ends of the three push rod assemblies (18) are arranged at the lock tongue positions of the three locks (21) in a one-to-one correspondence manner, so that when any two of the three locks (21) are in an unlocking position and the cantilever transmission assembly (41) is driven by the driving assembly (25) to move along the set direction, the corresponding two push rod assemblies (18) can move along the set direction. The locked device includes the lock. The unlocking mode is more convenient.

Description

Push rod type three-lock two-unlocking lockset and equipment with lock

Technical Field

The invention relates to the technical field of locks, in particular to a push rod type three-lock two-unlocking lock and equipment with the lock.

Background

In the prior art, a lock and an unlocking tool can be opened by only one key, and the safety coefficient is low. In order to increase the safety coefficient of locks, in the existing products such as financial security and protection, three-lock two-unlocking locks are adopted on the safe door and safe door equipment, and under the condition that a bolt of a part of electronic locks cannot provide driving force, the bolt of the three-lock two-unlocking locks of the door is usually mechanically driven to unlock and cannot be applied. The existing locks with relatively large vault doors, safe cabinet doors and the like have the defects that the locks cannot be unlocked due to the fact that the locks are relatively heavy in weight and the unlocking force is insufficient if the locks are unlocked by electric driving alone.

Disclosure of Invention

In view of the above, the invention provides a push rod type three-lock two-unlocking lockset and equipment with a lock, and the unlocking mode is more convenient and more practical.

In order to achieve the first purpose, the technical scheme of the push rod type three-lock two-unlocking lockset provided by the invention is as follows:

the invention provides a push rod type three-lock two-unlocking tool which comprises a driving component (25), a base (2), three locks (21), a cantilever type transmission component (41) and three push rod components (18),

the three locks (21) are fixedly arranged on the base (2),

the cantilever drive assembly (41) has three free ends,

the first ends of the three push rod assemblies (18) are in contact with the three free ends in a one-to-one correspondence,

the second ends of the three push rod assemblies (18) are correspondingly arranged at the lock tongue positions of the three locks (21) one by one, so that when any two of the three locks (21) are in an unlocking position and the cantilever transmission assembly (41) is driven by the driving assembly (25) to move along a set direction, the corresponding two push rod assemblies (18) can move along the set direction.

The push rod type three-lock two-unlocking lockset provided by the invention can be further realized by adopting the following technical measures.

Preferably, the cantilever type transmission assembly (41) comprises a first cantilever (11), a second cantilever (13), a first rocker (24) and a second rocker (16),

the middle part of the first rocker (24) is hinged to the first end of the first cantilever (11),

the middle part of the second seesaw (16) is hinged with the first end of the second cantilever (13),

the second end of the first cantilever (11) is contacted with the movable end of the driving assembly (25), and the second cantilever (13) is contacted with the first end of the first rocker (24), so that the second end of the first rocker (24), the first end of the second rocker (16) and the second end of the second rocker (16) respectively form the three free ends.

Preferably, the driving assembly (25) comprises a driving member (6) and a driven member (10),

the driving part (6) and the driven part (10) form a cam mechanism,

the second end of the first cantilever (11) is contacted with the movable end of the driven piece (10).

Preferably, the driving member (6) is hinged to the base (2), the driven member (10) is hinged to the base (2), and the first free end of the driving member (6) is in contact with the second free end of the driven member (10).

Preferably, the push rod assembly (18) comprises a bearing seat (17), a first rod body (27), a second rod body (26), a first elastic component (19) and a lock pin (28),

a moving pair is formed between the first rod body (27) and the second rod body (26),

the second rod body (26) is provided with a free end (20) outside the bearing seat (17),

the first elastic part (19) is sleeved on the second rod body (26) and is blocked in the second rod body by the bearing seat (17);

the locking pin (28) is terminated outside the bottom of the carrying seat (17).

Preferably, the push rod assembly (18) comprises a prying rod body (38) and a prying rocker (39),

the first end of the prying bar body (38) is contacted with the free end of the cantilever transmission component,

the second end of the prying bar body (38) is fixedly connected with the first end of the prying rocker (39),

the second ends of the prying rocker plates (39) are arranged at the lock tongue positions of the three locks (21) in a one-to-one correspondence manner;

the prying rocker (39) is hinged to the base (2) through the middle part of the prying rocker.

Preferably, the push rod type three-lock two-unlocking lockset also comprises a protection block (3),

the protection block (3) is fixedly connected to the base (2), a first boss (31) is arranged on one side, close to the driving part (6), of the protection block (3), a second boss (32) is formed at the reducing position of the driving part (6), and after the driving part (6) rotates for a set angle, the position of the first boss (31) corresponds to the position of the second boss (32);

the length of the limit hole (7) of the rotating shaft (8) of the driving piece (6) in the horizontal direction is larger than the diameter of the rotating shaft (8) of the driving piece (6), so that when the driving piece (6) moves to the limit position along the horizontal direction towards the position close to the protection block (3), the rotation of the driving piece (6) is stopped by the embedding of the first boss (31) and the second boss (32).

Preferably, the push rod type three-lock two-unlocking lock further comprises a second elastic component (35),

the second elastic component (35) is arranged between the inner wall of the limiting hole (7) and the rotating shaft (8) of the driving piece (6), so that when the driving piece (6) is pressed to move in the direction of the protection block (3), the second elastic component (35) can provide reverse stiffness acting force for the rotating shaft (8) of the driving piece (6).

Preferably, the contact position of the driven member (10) and the driving member (6) is a platform (37), so that the driving member (6) and the driven member (10) always have contact points by means of the platform (37) in the process of moving the driving member (6) in the horizontal direction.

In order to achieve the second object, the technical scheme of the device with lock provided by the invention is as follows:

the equipment with the lock comprises the push rod type three-lock two-unlocking lockset.

When the push rod type three-lock two-unlocking lock and the locking device provided by the embodiment of the invention are applied, the driving component 25 is pushed leftwards, the first cantilever 11 acts on the first rocker 24 after being pushed by the driving component 25, and as the first end of the first rocker 24 is contacted with the second cantilever 13, the second cantilever 13 further drives the second rocker 16 to move, wherein the second end of the first rocker 24, the first end of the second rocker 16 and the second end of the second rocker 16 are respectively contacted with the first ends of the three push rod components 18 in a one-to-one correspondence manner, therefore, under the condition, when 2 of the three locks are in unlocking positions, unlocking can be realized smoothly through the pushing force applied to the driving component 25 by the force application block 1 without overcoming the gravity of the lock, and therefore, the required unlocking acting force is smaller. Compared with the technical scheme of the three-lock two-unlocking lockset in the prior art, the push rod type three-lock two-unlocking lockset provided by the embodiment of the invention has more convenient unlocking mode.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic structural diagram of a push rod type three-lock two-unlocking lock according to an embodiment of the present invention when locking tongues of three locks are all in locking positions;

fig. 2 is a schematic structural diagram of a push rod type three-lock two-unlocking lockset according to an embodiment of the present invention when the lock tongues of the first lock and the second lock are in unlocking positions and the lock tongue of the third lock is in locking positions, and the lockset is in an unlocking state;

FIG. 3 is a schematic diagram of a structure of a push-rod type three-lock two-unlocking lock according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a push rod assembly used in a push rod type three lock two unlocking device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a protection block and a driving member applied in a push rod type three-lock two-unlocking lock according to an embodiment of the present invention in a free state;

fig. 6 is a schematic structural diagram of a protection block and a driving member applied in a push rod type three-lock two-unlocking lock according to an embodiment of the present invention in a protection state;

fig. 7 is a schematic structural diagram of a push rod type three-lock two-unlocking lock according to a second embodiment of the present invention when the lock bolts of the three locks are all in locking positions;

fig. 8 is a schematic structural diagram of a push rod assembly applied to a push rod type three-lock two-unlocking lock according to a second embodiment of the present invention.

Detailed Description

The invention provides a push rod type three-lock two-unlocking lockset and equipment with a lock, which are more convenient and faster in unlocking mode, so that the push rod type three-lock two-unlocking lockset is more suitable for practical use.

In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following is a detailed description of the specific implementation, structure, characteristics and effects of the push rod type three-lock two-unlocking lock and the locking device according to the invention with reference to the accompanying drawings and the preferred embodiment. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the described features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

The term "and/or" is herein merely an association relation describing an associated object, meaning that three relations may exist, e.g. a and/or B, specifically understood as: the composition may contain both a and B, and may contain a alone or B alone, and any of the above three cases may be provided.

In the embodiments, the left-right direction is described with reference to the drawings in the embodiments, and is not limited to the specific implementation.

Example 1

Referring to fig. 1 to 6, a push rod type three-lock two-unlock tool according to a first embodiment of the present invention includes a driving component 25, a base 2, three locks 21, a cantilever transmission component 41 and three push rods 18. Three locks 21 are fixedly arranged on the base 2. The cantilever transmission assembly 41 has three free ends, the first ends of the three push rod assemblies 18 touch the three free ends in a one-to-one correspondence, and the second ends of the three push rod assemblies 18 are disposed at the lock tongue positions of the three locks 21 in a one-to-one correspondence, so that when any two of the three locks 21 are in an unlocking position and the cantilever transmission assembly 41 is driven by the driving assembly 25 to move along the set direction, the corresponding two push rod assemblies 18 can move along the set direction.

In this embodiment, the cantilever transmission assembly 41 includes a first cantilever 11, a second cantilever 13, a first rocker 24, and a second rocker 16. Wherein the middle part of the first rocker 24 is hinged to the first end of the first cantilever 11, and the middle part of the second rocker 16 is hinged to the first end of the second cantilever 13. The second end of the first cantilever 11 touches the moving end of the driving assembly 25, and the second cantilever 13 touches the first end of the first rocker 24, so that the second end of the first rocker 24, the first end of the second rocker 16, and the second end of the second rocker 16 form free ends, respectively.

In this embodiment, a first gap is formed between the first lock 21a and the second lock 21b, the first lock tongue 23a of the first lock 21a is disposed in the first gap, a second gap is formed between the second lock 21b and the third lock 21c, and the second lock tongue 23b of the second lock 21b and the third lock tongue 23c of the third lock 21c are both disposed in the second gap. When the first lock 21a, the second lock 21b and the third lock 21c are all in the locking positions, the first push rod assembly 18a, the second push rod assembly 18b and the third push rod assembly 18c are all moved to the lower limit positions, the first push rod assembly 18a abuts against the upper end of the first lock tongue 23a, the second push rod assembly 18b abuts against the upper end of the second lock tongue 23b, and the third push rod assembly 18c abuts against the upper end of the third lock tongue 23c, at this time, the first push rod assembly 18a, the second push rod assembly 18b and the third push rod assembly 18c cannot move downwards continuously due to the blocking of the first lock tongue 23a, the second lock tongue 23b and the third lock tongue 23 c. If the push rod type three-lock two-unlocking lockset provided by the embodiment of the invention can be unlocked, the three modes are mainly adopted:

the first way is: the first lock tongue 23a of the first lock 21a is retracted to be in the unlocking position, the second lock tongue 23b of the second lock 21b is retracted to be in the unlocking position, at this time, when the driving assembly 25 receives a horizontal leftward force from the force application block 1, the first cantilever 11 moves vertically downwards, meanwhile, due to the blocking of the third push rod assembly 18c by the third lock tongue 23c of the third lock 21c, the first rocker 24 rotates anticlockwise with the hinge point 12 between the first rocker and the first cantilever 11 as a rotation center, the second cantilever 13 is pushed to move downwards, at this time, the second lock tongue 23b of the second lock 21b is also in the retracted state due to the first lock tongue 23a of the first lock 21a, and the second rocker 16 moves downwards as a whole while the second cantilever 13 moves downwards, so as to push the first push rod assembly 18a and the second push rod assembly 18b move downwards to be unlocked.

The second way is: the first lock tongue 23a of the first lock 21a is retracted to be in an unlocking position, the third lock tongue 23c of the third lock 21c is retracted to be in an unlocking position, at this time, when the driving assembly 25 receives a horizontal leftward acting force from the force application block 1, the first cantilever 11 moves vertically downwards, the first rocker 24 moves downwards as a whole to push the second cantilever 13 to move downwards, at this time, due to the stop of the second lock tongue 21c of the second lock 21b to the second push rod assembly 18b, while the second cantilever 13 moves downwards, the second rocker 16 rotates anticlockwise at the rotation center of the hinge point 15 between the second rocker and the second cantilever 13, at this time, because the first lock tongue 23a of the first lock 21a is in a retracted state, the third lock tongue 23c of the third lock 21c is in a retracted state, and the first push rod assembly 18a and the third push rod assembly 18c are pushed downwards to unlock.

Third mode: the second lock tongue 23b of the second lock 21b is retracted to be in the unlocking position, the third lock tongue 23c of the third lock 21c is retracted to be in the unlocking position, at this time, when the driving component 25 receives a horizontal leftward acting force from the force application block 1, the first cantilever 11 moves vertically downwards, the first rocker 24 moves downwards as a whole to push the second cantilever 13 to move downwards, at this time, due to the stop of the first lock tongue 23a of the first lock 21a to the first push rod component 18a, while the second cantilever 13 moves downwards, the second rocker 16 rotates clockwise at the rotation center of the hinge point 15 between the second lock tongue 23b and the second cantilever 13, at this time, because the second lock tongue 23b of the second lock 21b is in the retracted state, the third lock tongue 23c of the third lock 21c is in the retracted state, and the second push rod component 18b and the third push rod component 18c are pushed downwards to unlock.

Therefore, when the push rod type three-lock two-unlocking lock provided by the embodiment of the invention is applied, the driving component 25 is pushed leftwards, the first cantilever 11 acts on the first rocker 24 after being pushed by the driving component 25, and the first end of the first rocker 24 is contacted with the second cantilever 13, so that the second cantilever 13 further drives the second rocker 16 to move, wherein the second end of the first rocker 24, the first end of the second rocker 16 and the second end of the second rocker 16 are respectively contacted with the first ends of the three push rod components 18 in a one-to-one correspondence manner, therefore, under the condition, when 2 of the three locks are in unlocking positions, unlocking can be realized smoothly through the pushing force applied to the driving component 25 by the force application block 1 without overcoming the gravity of the lock, and the unlocking force is small. Compared with the technical scheme of the three-lock two-unlocking lockset in the prior art, the push rod type three-lock two-unlocking lockset provided by the embodiment of the invention has more convenient unlocking mode. In this embodiment, the mechanism for pushing the driving assembly 25 to the left is the force application block 1 provided by the door bolt assembly, in which case the mechanism does not need to be specially provided to perform the pushing of the driving assembly 25 to the left, and the operation is simple and convenient.

Wherein the drive assembly 25 comprises a driving member 6 and a driven member 10. The driving member 6 and the driven member 10 constitute a cam mechanism, and the second end of the first cantilever 11 touches the movable end of the driven member 10. In this case, according to the movement characteristics of the cam mechanism, during the rotation movement of the driving member 6, the driven member 10 can perform the rectilinear movement in the vertical direction to achieve the action of pushing the first cantilever 11 to move downward in the numerical direction. In addition, the driving unit 25 may be other structures as will occur to those of skill in the art, so long as the driving unit 25 can provide a force to move the first boom 11 downward, for example, a rod member capable of moving the first boom 11 downward by applying a downward force, or the like.

Wherein, the driving member 6 is hinged to the base 2, the driven member 10 is hinged to the base 2, and the first free end of the driving member 6 touches the second free end of the driven member 10. In this embodiment, the L-shaped connecting member 4 is disposed on the base 2, wherein the driving member 6 is connected to the horizontal portion of the L-shaped connecting member 4, and the driven member 10 is hinged to the vertical portion of the L-shaped connecting member 4, so that in this case, when the hinge shaft holes of the L-shaped connecting member 4, the driving member 6 and the driven member 10 are machined, the L-shaped connecting member 4 is only required to be machined, and the whole base 2 is not required to be machined, so that the machining is more convenient.

The driving member 6 has a semicircular shape, a first free end is formed at an inflection point thereof, and the driven member 10 has a rod shape, and a second free end is formed at an end point thereof. In this case, the driving member 6 and the driven member 10 are simple in shape and structure, and thus, not only are the machining modes simple, but also the cost is low.

The push rod assembly 18 includes a bearing seat 17, a first rod 27, a second rod 26, a first elastic member 19 and a lock pin 28. A moving pair is formed between the first rod body 27 and the second rod body 26, the second rod body 26 is provided with a free end 20 outside the bearing seat 17, and the first elastic part 19 is sleeved on the second rod body 26 and is stopped inside the bearing seat 17; the locking pin 28 is terminated outside the bottom of the carrier 17. In this embodiment, the bearing seat 17 has a first through hole 29 and a second through hole 30 at corresponding positions, the first rod body 27 passes through the first through hole 29, the second rod body 26 passes through the second through hole 30, and a free end 20 is left outside the bearing seat 17, a sliding pair is formed between the first rod body 27 and the second rod body 26, the first elastic member 19 is sleeved on the second rod body 26, the outer diameter of the first elastic member 19 is smaller than the outer diameter of the first rod body 27, and the outer diameter of the first elastic member 19 is larger than the diameter of the second through hole 30. The radial dimension of the locking pin 28 in at least one direction is greater than the diameter of the second through hole 30. In this case, when the push rod assembly 18 receives a downward pushing force, the elastic member 19 provides a cushion by means of the stiff acting force, so that the reaction force felt by the operator in the process of performing the unlocking action is smoother. In addition, the push rod assembly 18 may comprise only an integral push rod, in which case the function is also fulfilled, but the operation is not smooth due to the absence of the cushioning provided by the resilient member 19 when the unlocking action is performed.

Wherein, push rod formula three lock two open tool to lock still includes protection piece 3. The protection block 3 is fixedly connected to the base 2, a first boss 31 is arranged on one side, close to the driving piece 6, of the protection block 3, a second boss 32 is formed on the reducing position of the driving piece 6, and after the driving piece 6 rotates by a set angle, the position of the first boss 31 corresponds to the position of the second boss 32. The length of the limit hole 7 of the rotation shaft 8 of the driving member 6 in the horizontal direction is larger than the diameter of the rotation shaft 8 of the driving member 6, so that when the driving member 6 moves in the horizontal direction toward the approaching protection block 3 to the limit position, the rotation of the driving member 6 is stopped by the engagement of the first boss 31 and the second boss 32. In this case, when the leftward driving force applied by the urging block 1 is excessively large, the driving element 6 moves in a direction approaching the protection block 3, and in this case, when the rotational force continues to be applied to the driving element 6, the rotation of the driving element 6 is stopped by the engagement of the first boss 31 and the second boss 32, and the follower 10 cannot be forced downward, so that the transmission of the force to the push-rod transmission assembly can be prevented, and hence, illegal unlocking can be avoided.

The push rod type three-lock two-unlocking lock provided by the first embodiment of the invention further comprises a second elastic component 35. The second elastic component 35 is arranged between the inner wall of the limiting hole 7 and the rotating shaft 8 of the driving piece 6, so that when the driving piece 6 is pressed to move towards the direction of the protection block 3, the second elastic component 35 can provide reverse stiffness acting force for the rotating shaft 8 of the driving piece 6. Normally, due to the stiffness force provided by the second elastic member 35, the driving member 6 can be at the normal position, and when the driving member 6 receives the counterclockwise rotation force, the driven member 10 can be moved downward to perform the unlocking action; when the driving member 6 is moved to the left limit position by overcoming the stiffness force from the second elastic member 35 due to the force from the force applying block 1 so much, the driving member 6 continues to be applied with the counterclockwise rotation force, and the illegal unlocking is prevented by the engagement stop of the first boss 31 and the second boss 32, so that the driving member 6 can be easily restored by the restoration of the shape of the second elastic member 35 once the large force from the force applying block 1 is lost.

The contact position of the driven member 10 and the driving member 6 is a platform 37, so that the driving member 6 and the driven member 10 always have contact points by the platform 37 in the process of moving the driving member 6 in the horizontal direction. In this case, even if the driving member 6 is displaced with respect to the driven member 10 by receiving the leftward force from the force application block 1, the driving member 6 and the driven member 10 are not released.

In this embodiment, the push rod type lock with three locks and two unlocks further includes a first limiting member 14 and a second limiting member 22. The first limiting member 14 and the second limiting member 22 are both arranged along the set direction, and the second rocker 16 and the first limiting member 14 and the second limiting member 22 form a moving pair at the same time. In this case, the movement patterns of first rocker 22 and second rocker 16 can be restricted to avoid difficulty in unlocking or in resetting due to movement beyond a predetermined range.

Example two

Referring to fig. 7 and 8, the difference between the push rod type three-lock two-unlocking lock provided in the first embodiment of the present invention is that, in the push rod type three-lock two-unlocking lock provided in the second embodiment of the present invention, the push rod assembly 18 includes a prying bar 38 and a prying rocker 39. The first end of the prying rod body 38 is contacted with the free end of the cantilever type transmission component, the second end of the prying rod body 38 is fixedly connected with the first end of the prying rocker 39, and the second ends of the prying rocker 39 are arranged at the lock tongue positions of the three locks 21 in a one-to-one correspondence manner; the prying rocker 39 is hinged to the base 2 through its middle portion. In this embodiment, the prying lever 38 includes a first prying lever 38a, a second prying lever 38b, and a third prying lever 38c. The pry rocker 39 includes a first pry rocker 39a, a second pry rocker 39b, and a third pry rocker 39c. The first end of the first prying bar body 38a is contacted with the first end of the second seesaw 16, the second end of the first prying bar body 38a is fixedly connected with the first end of the first prying seesaw 39a, and the second end of the first prying seesaw 39a is arranged at the position of the lock tongue 23a of the first lock 21 a; the first prying rocker 39a is hinged to the base by a hinge shaft 40 a. The first end of the second prying bar body 38b touches the first end of the second seesaw 16, the second end of the second prying bar body 38b is fixedly connected to the first end of the second prying seesaw 39b, and the second end of the second prying seesaw 39b is arranged at the position of the lock tongue 23b of the first lock 21 b; the second prying rocker 39b is hinged to the base by a hinge shaft 40 b. The first end of the third prying bar body 38c is contacted with the first end of the second seesaw 16, the second end of the third prying bar body 38c is fixedly connected with the first end of the first prying seesaw 39c, and the second end of the third prying seesaw 39c is arranged at the position of the lock tongue 23c of the first lock 21 c; the third prying rocker 39c is hinged to the base by a hinge shaft 40 c.

Under the condition of the second scheme of the embodiment of the invention, when the first cantilever 11 is pressed to move downwards, the push rod assembly 18 can utilize the lever principle, and when the lock bolts 23 of any two locks 21 are in the unlocking position, the second ends of the corresponding two prying rocker 39 move to the corresponding lock bolts 23 to realize unlocking. The specific analysis method is similar to the push rod type three-lock two-lock unlocking tool provided in the first embodiment of the present invention, and will not be repeated here.

Example III

The locked device provided by the third embodiment of the invention comprises the push rod type three-lock two-unlocking lock provided by the first embodiment or the second embodiment of the invention.

When the locking device provided by the third embodiment of the present invention is applied, the driving component 25 is pushed to the left, and the first cantilever 11 acts on the first rocker 24 after being pushed by the driving component 25, and because the first end of the first rocker 24 touches the second cantilever 13, the second cantilever 13 further drives the second rocker 16 to move, wherein the second end of the first rocker 24, the first end of the second rocker 16 and the second end of the second rocker 16 touch the first ends of the three push rod components 18 in a one-to-one correspondence manner, therefore, under the condition, when 2 of the three locks are in unlocking positions, smooth unlocking can be realized through the pushing force applied by the force application block 1 to the driving component 25 without overcoming the gravity of the locks, and thus, the unlocking force is small. Compared with the technical scheme of the three-lock two-unlocking lockset in the prior art, the push rod type three-lock two-unlocking lockset provided by the embodiment of the invention has more convenient unlocking mode. In this embodiment, the mechanism for pushing the driving assembly 25 to the left is the force application block 1 provided by the door bolt assembly, in which case the mechanism does not need to be specially provided to perform the pushing of the driving assembly 25 to the left, and the operation is simple and convenient.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A push rod type three-lock two-unlocking lockset is characterized by comprising a driving assembly (25), a base (2), three locksets (21), a cantilever type transmission assembly (41) and three push rod assemblies (18),

the three locks (21) are fixedly arranged on the base (2),

the cantilever drive assembly (41) has three free ends,

the second ends of the three push rod assemblies (18) are arranged at the lock tongue positions of the three locks (21) in a one-to-one correspondence manner, so that when any two of the three locks (21) are in an unlocking position and the cantilever transmission assemblies (41) are driven by the driving assemblies (25) to move along a set direction, the corresponding two push rod assemblies (18) can move along the set direction,

the push rod assembly (18) comprises a bearing seat (17), a first rod body (27), a second rod body (26), a first elastic component (19) and a lock pin (28),

2. Push rod type three lock two unlocking lock according to claim 1, characterized in that the cantilever transmission assembly (41) comprises a first cantilever (11), a second cantilever (13), a first rocker (24) and a second rocker (16),

3. Push rod type three lock two unlocking lock according to claim 2, characterized in that the driving assembly (25) comprises a driving member (6) and a driven member (10),

the driving part (6) and the driven part (10) form a cam mechanism,

4. A push rod type three lock two unlocking lock according to claim 3, characterized in that the driving member (6) is hinged to the base (2), the driven member (10) is hinged to the base (2), and the first free end of the driving member (6) is in contact with the second free end of the driven member (10).

5. The push rod type three-lock two-unlocking lockset according to claim 1, wherein the push rod assembly (18) comprises a prying rod body (38) and a prying rocker (39),

6. The push rod type three-lock two-unlocking lockset according to claim 4, further comprising a protection block (3),

7. The push rod type three-lock two-unlocking lock according to claim 6, further comprising a second elastic member (35),

8. Push rod type three lock two unlocking lock according to claim 6, characterized in that the contact position of the follower (10) and the driving part (6) is a platform (37), so that the driving part (6) and the follower (10) always have contact points by means of the platform (37) in the process of moving the driving part (6) in the horizontal direction.

9. A locking device comprising a push rod type three-lock two-unlocking lock according to any one of claims 1 to 8.