Double-open linkage lock and safety door

Abstract

The utility model provides a double-open linkage lockset and a safety door, which comprise a lock shell, a handle and a knob are rotatably mounted on the lock shell, the handle is in transmission connection with a latch bolt lock, and the knob is in transmission connection with a dead bolt lock; the pushing assembly is rotationally mounted in the lock shell, and the pushing assembly is synchronously and rotationally connected with the rotating drum of the handle in the circumferential direction; the square bolt lock rotating assembly comprises at least two reducing sleeves rotationally installed on the inner wall of the lock shell, the multiple reducing sleeves synchronously rotate through a transmission part, and a plug pin of the rotary knob drives an inner hole of any reducing sleeve. According to the utility model, through the arrangement of the plurality of reducing sleeves and the transmission parts, the dead bolt lock bar and the knob can be mounted on the corresponding reducing sleeves according to requirements, so that the mounting positions of the dead bolt lock bar and the knob are adjusted, and the use requirements of different users are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lockset, specifically, relates to a double -open linkage lockset and safety door. BACKGROUND

[0002] The existing lockset generally has a square tongue lock and a latch lock, and the square tongue lock and the latch lock are two separate modules and are controlled by different control elements to operate. In the related art, the square tongue lock and the latch lock have a fixed interval, and the installation position of the square tongue lock is fixed, and the installation position of the square tongue lock cannot be adjusted according to the needs of the user. SUMMARY

[0003] The utility model discloses a double -open linkage lockset and safety door to solve the above -mentioned problem.

[0004] In a first aspect, the utility model provides a double -open linkage lockset, comprising:

[0005] A lock housing, a handle and a rotary knob are rotatably installed on the lock housing, the handle is in transmission connection with the latch lock, and the rotary knob is in transmission connection with the square tongue lock;

[0006] A push assembly, the push assembly is rotatably installed in the lock housing, and the push assembly is connected with the rotating cylinder of the handle;

[0007] A square tongue lock rotation assembly, the square tongue lock rotation assembly comprises a rotating sleeve rotatably installed on the inner wall of the lock housing, the rotating sleeve is at least two, a plurality of rotating sleeves are synchronously rotated through a transmission member, and the pin of the rotary knob is inserted into the inner hole of any one rotating sleeve; and

[0008] A linkage assembly, the linkage assembly is arranged in the lock housing, and the linkage assembly is used for linking the push assembly and the square tongue lock rotation assembly.

[0009] In an embodiment, the double -open linkage lockset has a symmetry plane with the center axis of the push assembly as the reference, and the center line of the plurality of rotating sleeves is located on the symmetry plane.

[0010] In an embodiment, the transmission member comprises a first straight gear fixed to each rotating sleeve, two adjacent first straight gears are connected with a second straight gear in common meshing, and the second straight gear is rotatably installed on the inner wall of the lock housing.

[0011] In an embodiment, the central axis of the second spur gear is not in the same plane as the central axes of the plurality of adapter sleeves; and / or, the inner wall of the lock housing is provided with an arc-shaped groove, the arc-shaped groove is provided with a stop block, the side wall of the first spur gear is fixed with a limiting block extending into the arc-shaped groove, and the limiting block can abut against the stop block when the second spur gear rotates.

[0012] In an embodiment, the linkage assembly comprises a half gear rotatably mounted on the inner wall of the lock housing and a lifting push plate slidably mounted on the inner wall of the lock housing, the outer side of the adapter sleeve closest to the linkage assembly of the plurality of adapter sleeves is fixed with a third spur gear engaged with the half gear, the diameter of the half gear is greater than the diameter of the third spur gear, the surface of the half gear is fixed with a first abutting block, the first abutting block is arranged on the sliding path of the lifting push plate, and the first abutting block abuts against the side of the lifting push plate away from the push assembly.

[0013] In an embodiment, the push assembly comprises a mounting cylinder seat fixedly arranged on the inner wall of the lock housing, the mounting cylinder seat is rotatably mounted with a rotating plate through a torsion spring, the rotating plate is fixed with two symmetrically arranged second abutting blocks, the two second abutting blocks abut against the two sides of the bottom of the lifting push plate, and the rotating cylinder of the handle is connected with the rotating plate in a circumferential limiting manner, so that the second abutting blocks push the lifting push plate to move towards the direction close to the rotating assembly of the mortise lock.

[0014] In an embodiment, the diameter of the half gear is D1, the diameter of the third spur gear is D2, and D1 / D2≥2; and / or, the number of the first abutting blocks is two, and the side of the lifting push plate away from the push assembly is provided with two push parts, and the two push parts correspond to the two first abutting blocks respectively.

[0015] In an embodiment, the half gear is rotatably mounted on the inner wall of the lock housing through a rotating shaft, two long waist holes are formed in the lifting push plate, and the rotating shaft is slidably connected with one of the long waist holes; another long waist hole is provided with a screw rod mounted on the inner wall of the lock housing.

[0016] In an embodiment, the inner wall of the lock housing is provided with a battery housing for placing a battery module, and the half gear and the lifting push plate are mounted on the battery housing.

[0017] In a second aspect, the utility model also provides a safety door comprising the double-opening linkage lock as described above.

[0018] The double-opening linkage lock and safety door provided by this utility model, through the setting of multiple adapter sleeves and transmission components, can install the square tongue lock and knob on the corresponding adapter sleeve as needed, so as to adjust the installation position of the square tongue lock and knob, meet the usage needs of different users, and improve the versatility of the double-opening linkage lock.

[0019] These or other aspects of this invention will become more apparent in the following description of the embodiments. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of the double-opening linkage lock provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows the internal structure of the two types of locking tongues of the double-lock linkage device when they are retracted.

[0023] Figure 3 for Figure 2 The diagram shown illustrates the structure of a double-lock linkage mechanism when the bolts retract after removing the two types of locking mechanisms.

[0024] Figure 4 for Figure 1 The diagram shows the internal structure of the two types of locking tongues of the double-lock linkage device when they are extended.

[0025] Figure 5 for Figure 1 An exploded view of the double-opening linkage lock shown;

[0026] Figure 6 for Figure 1 The diagram shows a partial structural schematic of a double-opening linkage lock. Detailed Implementation

[0027] To facilitate understanding of the embodiments of this utility model, a more comprehensive description of the embodiments of this utility model will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0029] The inventor of the present application finds that in the prior art, the square tongue lock and the oblique tongue lock have a fixed interval, and the installation position of the square tongue lock is fixed, and the installation position of the square tongue lock cannot be adjusted according to the needs of the user.

[0030] In order to improve at least part of the above problems, the present application provides a double-opening linkage lock and a security door, at least two adapter sleeves 51 are rotatably installed on the inner wall of the lock housing 1, the plurality of adapter sleeves 51 are synchronously rotated through a transmission member, the bolt of the knob 6 is inserted into the inner hole of any one of the adapter sleeves 51, and then the installation position of the knob 6 and the square tongue lock 100 is adjusted, and the applicability is improved, that is, the problem that the installation position of the square tongue lock 100 and the knob 6 is not adjustable is effectively solved. The double-opening linkage lock provided by the present application is described in detail below in combination with the specific embodiments and the accompanying drawings of the specification.

[0031] The utility model provides a kind of double-opening linkage lock, please refer to Figures 1 to 3 , including lock housing 1, push assembly 3, linkage assembly 4 and square tongue lock rotation assembly 5, handle 2 and knob 6 are rotatably installed on lock housing 1, handle 2 is in transmission connection with oblique tongue lock 200, knob 6 is in transmission connection with square tongue lock 100, so that handle 2 can drive the lock tongue of oblique tongue lock 200 to extend or retract, knob 6 can drive the lock tongue of square tongue lock 100 to extend or retract, square tongue lock 100, oblique tongue lock 200, handle 2 and knob 6 all use existing and adapted model;Push assembly 3, linkage assembly 4 and square tongue lock rotation assembly 5 are all arranged in the inside of lock housing 1, when installing, lock housing 1 is integrally installed on door body, and the side of lock housing 1 close to door body is provided with isolation plate, to protect push assembly 3, linkage assembly 4 and square tongue lock rotation assembly 5.

[0032] Please refer to Figures 2 to 5 , push assembly 3 is installed in the inside of lock housing 1, and push assembly 3 is in circumferential synchronous rotation connection with the rotating cylinder of handle 2;Specifically, push assembly 3 includes mounting cylinder seat 31 fixedly arranged on the inner wall of lock housing 1, mounting cylinder seat 31 can be integrally cast with lock housing 1, the rotating cylinder of handle 2 is rotatably installed in the inner hole of mounting cylinder seat 31, and mounting cylinder seat 31 is rotatably provided with rotating plate 33 through torsional spring 32.

[0033] The second abutting block 34 fixed on the rotating plate 33 can abut against the lifting push plate 43. The rotating cylinder of the handle 2 is circumferentially limitedly connected with the rotating plate 33. The handle 2 can drive the rotating plate 33 to rotate, so that the second abutting block 34 arranged on the rotating plate 33 is rotated to abut against the lifting push plate 43, so that the second abutting block 34 can push the lifting push plate 43 to move towards the direction of approaching the square tongue lock 5.

[0034] In the embodiment, the number of the second abutting block 34 is two, and the two second abutting blocks 34 are symmetrically arranged about the central axis of the mounting cylinder seat 31. The two second abutting blocks 34 can respectively abut against the two sides of the bottom of the lifting push plate 43. Specifically, when the square tongue lock 200 is in the extended state, the two second abutting blocks 34 are located in the same horizontal plane (i.e. Figure 4 indicated), and at this time, the two second abutting blocks 34 respectively abut against the two sides of the bottom of the lifting push plate 43. The rotating cylinder of the handle 2 is circumferentially limitedly connected with the rotating plate 33, that is, when the handle 2 is rotated to any side, the rotating plate 33 will be rotated correspondingly, and the second abutting block 34 on the corresponding side will also be flipped upwards. The lifting push plate 43 will be upwardly abutted and moved to make the square tongue lock 200 be in the retracted state. At this time, the two second abutting blocks 34 are not located in the same horizontal plane (i.e. Figure 3 indicated). That is, no matter in which direction the handle 2 is rotated, the square tongue lock 200 can be retracted, so that the double-opening linkage lock can realize bidirectional quick unlocking.

[0035] Please refer to Figure 3 and Figure 5 . Further, the rotating cylinder of the handle 2 is connected with the rotating plate 33 in the following manner: the inner end of the rotating cylinder of the handle 2 has a plurality of clamping portions, and in the embodiment, the number of the clamping portions is four. Four insertion holes arranged in a ring shape are formed in the rotating plate 33, and the four clamping portions respectively penetrate and insert the four insertion holes. When the handle 2 is twisted, the four clamping portions can drive the rotating plate 33 to synchronously rotate.

[0036] Please refer to Figures 2 to 5 . The linkage assembly 4 is arranged in the inside of the lock housing 1. The linkage assembly 4 comprises a half gear 41 rotatably arranged on the inner wall of the lock housing 1 and a lifting push plate 43 slidably arranged on the inner wall of the lock housing 1. The half gear 41 is located between the inner wall of the lock housing 1 and the lifting push plate 43. The surface of the half gear 41 is fixed with two first abutting blocks 42. The first abutting blocks 42 are arranged on the sliding path of the lifting push plate 43, so that the lifting push plate 43 can drive the half gear 41 to rotate when the lifting push plate 43 slides. The first abutting blocks 42 abut against the side of the lifting push plate 43 away from the pushing assembly 3, so that the pushing assembly 3 can drive the lifting push plate 43 to slide, and further drive the half gear 41 to rotate, so as to realize the synchronous movement of the half gear 41 and the lifting push plate 43.

[0037] It should be noted that in the present embodiment, the number of first abutting blocks 42 is two, and the side of the lifting push plate 43 away from the push assembly 3 is provided with two push parts, which are the parts of the push assembly 3 abutting against the first abutting blocks 43, and the two push parts correspond to the two first abutting blocks 42 respectively. After the lifting push plate 43 moves upward to the maximum stroke, each first abutting block 42 abuts against one push part of the lifting push plate 43, avoiding the overstroke movement of the lifting push plate 43.

[0038] When the locking tongue of the square tongue lock 100 is in the retracted state, the two first abutting blocks 42 are located on the same horizontal plane (i.e. Figure 3 When the locking tongue of the square tongue lock 100 is in the extended state, the two first abutting blocks 42 are not located on the same horizontal plane (i.e. Figure 4

[0039] Please refer to Figure 3 , further, the half gear 41 is rotatably installed on the inner wall of the lock housing 1, the lifting push plate 43 is provided with two long waist holes, the two long waist holes are arranged in correspondence with each other, and the shaft is slidably connected with one of the long waist holes; another long waist hole is provided with a screw rod installed in the inner wall of the lock housing 1, that is, the lifting push plate 43 is limited by the screw rod to prevent the lifting push plate 43 from falling off.

[0040] Please refer to Figure 3 , further, the inner wall of the lock housing 1 is provided with a battery housing 60, and the battery housing 60 is used to place a battery module, wherein the battery module provides power for the operation of the square tongue lock 100 of the split quick-opening linkage lock, and the half gear 41 and the lifting push plate 43 are installed on the side wall of the battery housing 60.

[0041] Please refer to Figure 3 , further, the side wall of the battery housing 60 is provided with two guide protrusions 61, and the two guide protrusions 61 are arranged on opposite sides of the lifting push plate 43. For example, the two guide protrusions 61 are arranged in the width direction of the lock housing 1 to guide the lifting push plate 43 to move in the length direction of the lock housing 1. In the present embodiment, the size between the two guide protrusions 61 is adapted to the width of the lifting push plate 43, so that the lifting push plate 43 can move smoothly in the length direction of the lock housing 1.

[0042] Please refer to Figures 2 to 5 , the square tongue lock rotating assembly 5 includes a rotating sleeve 51 rotatably installed on the inner wall of the lock housing 1, and the number of rotating sleeves 51 can be at least two. The plurality of rotating sleeves 51 are vertically and uniformly distributed, and the plurality of rotating sleeves 51 are synchronously rotated by a transmission member. The latch of the knob 6 is inserted into the inner hole of any one of the rotating sleeves 51, and is specifically installed in a certain rotating sleeve 51, which needs to be determined according to the user's needs, so as to adjust the installation position of the knob 6 and the square tongue lock 100, and improve the applicability.​

[0043] Please refer to Figures 3 to 5 The transmission member includes a first spur gear 52 fixed to the outer periphery of each adapter sleeve 51, two adjacent first spur gears 52 are connected with a second spur gear 53 in common engagement, and the second spur gear 53 is rotatably installed on the inner wall of the lock housing 1, so as to realize the synchronous and same-direction rotation of the plurality of adapter sleeves 51.

[0044] The double-open linkage lock has a symmetry plane (which intersects perpendicularly with the front surface of the lock) with the center axis of the push assembly 3 as the reference, and the center line of the plurality of adapter sleeves 51 is located on the symmetry plane. In this way, along the top view direction of the double-open linkage lock, the push assembly 3 and the plurality of adapter sleeves 51 are located on the same straight line (the length direction of the lock housing 1), so that the knob 6 can be installed in one of the adapter sleeves 51 along the length direction of the lock housing 1 without deviation, and the overall structure of the double-open linkage lock is more compact.

[0045] In the embodiment, the center axis of the second spur gear 53 and the center axis of the plurality of adapter sleeves 51 are not on the same plane, that is, along the top view direction of the double-open linkage lock, the second spur gear 53 and the plurality of adapter sleeves 51 are not on the same straight line. Since the first spur gear 52 is fixed to the outer periphery of the adapter sleeve 51, two adjacent first spur gears 52 are connected with the second spur gear 53 in common engagement, therefore, when the second spur gear 53 and the plurality of adapter sleeves 51 are not on the same straight line, the distance between two adjacent adapter sleeves 51 can be reduced without changing the diameter of the second spur gear 53, thereby shortening the length of the lock housing 1, which is beneficial to the miniaturization of the double-open linkage lock.

[0046] Please refer to Figures 3 to 5 The embodiment is described by taking two adapter sleeves 51 as an example, the two adapter sleeves 51 correspond vertically, and the two adapter sleeves 51 are both installed with the first spur gear 52. The second spur gear 53 is installed on the inner wall of the lock housing 1, and the second spur gear 53 is connected with the two first spur gears 52 in engagement, that is, the two adapter sleeves 51 can rotate synchronously under the action of the two first spur gears 52 and the second spur gear 53. When installing, the bolt of the knob 6 can be optionally inserted into the inner hole of the corresponding adapter sleeve 51 to meet the needs of customers, and it should be noted that the hole position of the knob 6 installed on the lock housing 1 and the position of the square tongue lock 100 need to be adjusted adaptively.

[0047] The inner hole section of the adapter sleeve 51 and the bolt section of the knob 6 are adapted, and both are polygonal structures. The bolt of the knob 6 drives the inner hole of the adapter sleeve 51, so that the knob 6 and the adapter sleeve 51 rotate synchronously. The outer side of the adapter sleeve 51 closest to the linkage assembly 4 in the plurality of adapter sleeves 51 is fixed with a third spur gear 54 engaged with the half gear 41.

[0048] In the embodiment, the diameter of the half gear 41 is greater than the diameter of the third spur gear 54, so that the rotation speed of the third spur gear 54 is greater than the rotation speed of the half gear 41, thereby the rotation speed of the plug of the knob 6 is greater than the rotation speed of the rotating barrel of the handle 2, and further, when the lock bolt of the mortise lock 200 is retracted by turning the handle 2, the lock bolt of the square tongue lock 100 is also retracted, and the square tongue lock 100 is retracted earlier than the mortise lock 200. That is, the one-key quick opening is completed by the mechanical structure, and only one action is needed to complete the retraction of the square tongue lock 100 and the mortise lock 200, thereby the convenience in use is improved, the problem caused by the delay of the electronic control is solved, and the problem that the square tongue lock 100 is scratched by the door frame buckle when the square tongue lock 100 is retracted is avoided. Meanwhile, the power consumption of the split quick opening linkage lock is effectively reduced.

[0049] In the embodiment, the diameter of the half gear 41 is D1, and the diameter of the third spur gear 54 is D2, wherein D1 / D2≥2, and the square tongue lock 100 is retracted more quickly. In other embodiments, the ratio of the diameter of the half gear 41 to the diameter of the third spur gear 54 can be between 1 and 2, that is, 1

[0050] When the half gear 41 rotates, the knob 6 and the adapter sleeve 51 are synchronously rotated by the cooperation of the third spur gear 54, and further, the lock bolt of the square tongue lock 100 is retracted or extended.

[0051] When the lock bolts of the square tongue lock 100 and the mortise lock 200 are in the extended state (that is, Figure 4 When the handle 2 is turned, the lock bolt of the mortise lock 200 is retracted, and at the same time, the rotating plate 33 is rotated by the handle 2, and the lifting push plate 43 is moved upward by the second abutting block 34. Since only one first abutting block 42 abuts against the lifting push plate 43 at this time, the half gear 41 is rotated by the lifting push plate 43 in the process of moving upward, and the half gear 41 synchronously rotates the adapter sleeve 51 and the knob 6 by the third spur gear 54, so that the square tongue lock 100 is synchronously retracted. When the handle 2 is released, the handle 2 is restored by the action force of the torsional spring 32, that is, the mortise lock 200 is in the extended state, and the square tongue lock 100 is in the retracted state.

[0052] In the embodiment, when the handle 2 is turned to any side, the lock bolts of the square tongue lock 100 and the mortise lock 200 are synchronously retracted by the pure mechanical mode, and the retraction of the lock bolt of the square tongue lock 100 is not delayed. In addition, the knob 6 does not affect the extension and retraction of the lock bolt of the square tongue lock 100.

[0053] Please refer to Figure 5 and Figure 6Further, the inner wall of the lock housing 1 is provided with an arc-shaped groove 57, and a stop block 58 is arranged in the arc-shaped groove 57. A limiting block (not shown in the figure) of the first straight gear 52 is fixed to extend into the arc-shaped groove 57, and the limiting block can abut against the stop block 58 when the third straight gear 54 rotates, so as to limit the rotation angle of the first straight gear 52, thereby avoiding that the rotation angle of the third straight gear 54 is too large to cause the half gear 41 to separate from the third straight gear 54. Since the knob 6 rotates synchronously with the adapter sleeve 51, and the first straight gear 52 is fixed to the outer side of the adapter sleeve 51, the rotation angle of the knob 6 can also be limited by the stop block 58, so as to avoid that the rotation angle of the knob 6 is too large.

[0054] In summary, the multiple adapter sleeves 51 are matched with the transmission member, so that the multiple adapter sleeves 51 can be synchronously driven to rotate, and therefore the square tongue lock 100 and the knob 6 can be installed on the corresponding adapter sleeves 51 according to needs, and the square tongue lock 100 can be retracted or extended, so as to adjust the installation positions of the square tongue lock 100 and the knob 6, meet the use requirements of different users, and improve the versatility of the double-opening linkage lockset.

[0055] The utility model also provides a safety door, including above-mentioned double-opening linkage lockset. Can understand, safety door still includes door panel. Since safety door includes double-opening linkage lockset, therefore also has double-opening linkage lockset's adjustment square tongue lock 100 and knob 6's installation position, meet the use requirements of different users, and improve the versatility of the double-opening linkage lockset.

[0056] In the present application, unless otherwise explicitly specified or limited, the term "assembly" and other terms should be understood broadly. For example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements, or it can be only surface contact, or surface contact connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as specific or special structures. The description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Furthermore, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0058] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A double swing mortise lock, comprising: The utility model provides a double opening linkage lock, comprising: a lock housing, a handle and a knob are rotatably installed on the lock housing, the handle is drivingly connected with a latch bolt, and the knob is drivingly connected with a square tongue lock; a pushing assembly is rotatably installed in the lock housing, and the pushing assembly is connected with a rotating cylinder of the handle; a square tongue lock rotating assembly comprises a rotating sleeve rotatably installed on an inner wall of the lock housing, the rotating sleeve is at least two, a plurality of rotating sleeves are synchronously rotated through a transmission member, and a plug of the knob is inserted into an inner hole of any one of the rotating sleeves; and a linkage assembly is arranged in the lock housing, and the linkage assembly is used for linking the pushing assembly and the square tongue lock rotating assembly. The double opening linkage lock has a symmetry plane based on a central axis of the pushing assembly, and central lines of the plurality of rotating sleeves are located on the symmetry plane.

2. The double swing linkage lockset of claim 1, wherein, The transmission member comprises a first spur gear fixed to each rotating sleeve, two adjacent first spur gears are jointly connected with a second spur gear, and the second spur gear is rotatably installed on an inner wall of the lock housing.

3. The double swing linkage lockset of claim 1, wherein, The central axis of the second spur gear and the central axes of the plurality of rotating sleeves are not located on the same plane; and / or the inner wall of the lock housing is provided with an arc-shaped groove, a stop block is arranged in the arc-shaped groove, a limiting block of the first spur gear is fixed to a side wall and extends into the arc-shaped groove, and the limiting block can abut against the stop block when the second spur gear rotates.

4. The double swing linkage lockset of claim 3, wherein, The linkage assembly comprises a half gear rotatably installed on the inner wall of the lock housing and a lifting push plate slidingly installed on the inner wall of the lock housing, an outer side of the rotating sleeve closest to the linkage assembly in the plurality of rotating sleeves is fixed with a third spur gear meshing with the half gear, a diameter of the half gear is greater than that of the third spur gear, a first abutting block is fixed to a surface of the half gear, the first abutting block is arranged on a sliding path of the lifting push plate, and the first abutting block abuts against a side of the lifting push plate away from the pushing assembly.

5. The double swing linkage lockset of claim 1, wherein, The pushing assembly comprises a mounting cylinder seat fixedly arranged on the inner wall of the lock housing, the mounting cylinder seat is rotatably provided with a rotating plate through a torsion spring, the rotating plate is fixedly provided with two symmetrically arranged second abutting blocks, the two second abutting blocks abut against two sides of a bottom of the lifting push plate, and a rotating cylinder of the handle is circumferentially limitedly connected with the rotating plate, so that the second abutting blocks push the lifting push plate to move towards the square tongue lock rotating assembly.

6. The double swing linkage lockset of claim 5, wherein, A diameter of the half gear is D1, a diameter of the third spur gear is D2, and D1 / D2 is greater than or equal to 2; and / or the number of the first abutting blocks is two, and the side of the lifting push plate away from the pushing assembly is provided with two pushing portions corresponding to the two first abutting blocks.

7. The double swing linkage lockset of claim 5, wherein, The half gear is rotatably installed on the inner wall of the lock housing through a rotating shaft, two long waist holes are formed in the lifting push plate, the rotating shaft is slidingly matched with one of the long waist holes, and a screw rod installed on the inner wall of the lock housing is arranged in the other long waist hole.

8. The double swing linkage lockset of claim 5, wherein, ​ 9. The double swing linkage lockset of claim 5, wherein, The inner wall of the lock housing is provided with a battery housing for placing a battery module, and the half gear and the lifting push plate are both mounted on the battery housing.

10. A security door comprising: The double open linkage lock includes the double open linkage lock as claimed in any one of claims 1-9.

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