Multi-lock linkage device

Abstract

The utility model discloses a multi-lock linkage device which comprises a plurality of lock devices, the lock devices are arranged on the same or different edges of a door respectively, an outer door handle is installed on the outer side of the door, and an inner door handle is installed on the inner side of the door. The direction dividing device comprises a plurality of direction dividing bases and a plurality of linkage shafts, the direction dividing bases are all installed on the inner side of a door, the first direction dividing base is connected with the second direction dividing base through the first linkage shaft, the second direction dividing base is connected with the third direction dividing base through the second linkage shaft, and the fourth direction dividing base is connected with an inner door handle through the fourth linkage shaft. A third linkage shaft is arranged on the second direction separating base, the door inner handle is connected with the third linkage shaft through an inner handle transmission shaft, the door outer handle is connected with the third linkage shaft, and the direction separating device is connected with the multiple lock devices in a one-to-one correspondence mode through the multiple lock device transmission rods. The multi-lock linkage device provided by the utility model can ensure that the whole door is always opened and closed with certain force, improves the structural stability of the door, and is simple in structure and convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of linkage devices, in particular to a multi-lock linkage device. Background Art

[0002] At present, the connection between a door leaf and a door frame mainly adopts a single-group or double-group locking mechanism, and the closing of the door is realized through an up-and-down linkage mode. Especially in special application scenarios such as car doors or cabin doors, due to the influence of environmental factors such as vibration and impact, the single-point locked car door may be deformed, affecting its service life. Therefore, in order to improve the stability and durability of the car door or cabin door, it is particularly important to implement multi-point locking.

[0003] In the design of existing multi-lock mechanisms, the dividing device usually uses gears or rollers for connection, but this dividing structure is often relatively complex, making the installation process difficult. In order to meet the requirements of passage convenience and appearance beauty, car doors or cabin doors are often designed to have a certain arc shape. However, due to the large arc of the car door or cabin door, this not only increases the difficulty of connecting the rollers and gears, but also may affect the synchronization of the opening and closing actions of the locks, thus having a negative impact on the overall performance. Summary of the Utility Model

[0004] In view of the problems of complex structure and difficult installation existing in the current multi-lock linkage device, the utility model provides a multi-lock linkage device, which can ensure that a certain force is always applied to the entire plane of the door for opening and closing, improving the overall structural stability of the door, and having a simple overall structure and being convenient for installation.

[0005] To achieve the above object, the embodiments of the utility model adopt the following technical solutions:

[0006] A multi-lock linkage device includes a plurality of lock devices, and the plurality of lock devices are respectively arranged on the same or different edges of a door. The lock devices include a first lock device, a second lock device, a third lock device, and a fourth lock device; an outer door handle is installed on the outer side of the door, and an inner door handle is installed on the inner side of the door; a direction-dividing device is further included. The direction-dividing device includes a plurality of direction-dividing bases and a plurality of linkage shafts. The plurality of direction-dividing bases are all installed on the inner side of the door. The direction-dividing bases include a first direction-dividing base, a second direction-dividing base, a third direction-dividing base, and a fourth direction-dividing base. The first direction-dividing base is connected to the second direction-dividing base through a first linkage shaft, the second direction-dividing base is connected to the third direction-dividing base through a second linkage shaft, the fourth direction-dividing base is connected to the inner door handle through a fourth linkage shaft, a third linkage shaft is arranged on the second direction-dividing base, the inner door handle is connected to the third linkage shaft through an inner handle transmission shaft, the outer door handle is connected to the third linkage shaft, and the direction-dividing device is connected to the plurality of lock devices through a plurality of lock device transmission rods, and the lock device transmission rods are connected to the lock devices in a one-to-one correspondence.

[0007] According to one aspect of the present invention, the direction-dividing base includes a direction-dividing mounting seat fixedly installed on the door, and a direction-dividing arm is movably connected to the direction-dividing mounting seat.

[0008] According to one aspect of the present invention, the lock device transmission rods include a first lock device transmission rod, a second lock device transmission rod, a third lock device transmission rod, and a fourth lock device transmission rod. One end of the first lock device transmission rod is connected to the direction-dividing arm of the first direction-dividing base, and the other end is connected to the first lock device. One end of the second lock device transmission rod is connected to the direction-dividing arm of the third direction-dividing base, and the other end is connected to the second lock device. One end of the third lock device transmission rod is connected to the direction-dividing arm of the third direction-dividing base, and the other end is connected to the third lock device. One end of the fourth lock device transmission rod is connected to the direction-dividing arm of the fourth direction-dividing base, and the other end is connected to the fourth lock device.

[0009] According to one aspect of the present invention, the fourth lock device transmission rod includes a transmission main rod. One end of the transmission main rod is connected to the direction-dividing arm of the fourth direction-dividing base, and the other end is connected to a transmission sub-rod, and the transmission sub-rod is connected to the fourth lock device.

[0010] According to one aspect of the present utility model, the inner door handle includes an inner handle base fixedly installed on the inner side of the door. An inner handle member is movably connected to the inner handle base. The inner handle member includes an inner handle section movably connected inside the inner handle base. A third connecting shaft is provided on the inner handle section. One end of the inner handle section is provided with a connecting section. The connecting section is connected to the inner handle transmission shaft through a connecting head. A connecting member is movably arranged inside the inner handle base. One end of the connecting member is connected to the third connecting shaft, and the other end is connected to the fourth linkage shaft.

[0011] According to one aspect of the present utility model, the connecting member includes a first connecting member arranged inside the inner handle base and connected to the third connecting shaft, and a second connecting member arranged inside the inner handle base and connected to the first connecting member. The second connecting member is connected to the fourth linkage shaft.

[0012] According to one aspect of the present utility model, the first connecting head includes a bolt inserted through the end of the connecting section. A spherical sleeve is sleeved on the middle of the bolt. A connecting rod is sleeved outside the spherical sleeve. The connecting rod is connected to the inner handle transmission shaft.

[0013] According to one aspect of the present utility model, the lock device includes a lock seat fixedly installed on the inner side of the door and a lock head connected to the lock seat. The lock seat includes a fixed base fixedly installed on the inner side of the door. A lock shaft is arranged inside the fixed base. One end of the lock shaft is connected to a connecting seat, and the other end is connected to the lock head. The other end of the connecting seat is connected to the lock device transmission rod.

[0014] According to one aspect of the present utility model, the lock head includes a first fixing plate installed on the inner side of the door. A lock core mounting plate is fixedly installed on the first fixing plate. A lock core is arranged on the lock core mounting plate. The lock shaft is connected to the lock core.

[0015] According to one aspect of the present utility model, the outer door handle includes an outer handle base fixedly installed on the outer side of the door. An outer handle member is arranged inside the outer handle base. One end of the outer handle member is connected to an unlocking device. An outer handle connecting piece is connected to the unlocking device. The outer handle connecting piece is connected to the third linkage shaft.

[0016] Advantages of the implementation of the present utility model: Multiple lock devices are connected to the direction-changing device through the lock device transmission rod, enabling the control of multiple lock devices by the indoor door handle and the outdoor door handle; by movably mounting the direction-changing arm on the direction-changing mounting base, the direction-changing connection of the lock devices is achieved, realizing the linkage between lock devices at different positions, with a simple structure and convenient installation; by respectively arranging multiple lock devices at the same or different edges of the door, and under the linkage of the direction-changing device, a certain force is always maintained on the entire plane of the door during opening and closing, improving the stability of the overall structure of the door. A multi-lock linkage device provided by the present utility model can ensure that a certain force is always maintained on the entire plane of the door during opening and closing, improving the stability of the overall structure of the door, with a simple overall structure and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of a multi-lock linkage device according to the present utility model;

[0019] Figure 2 Structural schematic diagram of a multi-lock linkage device according to the present utility model;

[0020] Figure 3 Cross-sectional structural schematic diagram of the indoor door handle in a multi-lock linkage device according to the present utility model;

[0021] Figure 4 Cross-sectional schematic diagram of the outdoor door handle in a multi-lock linkage device according to the present utility model;

[0022] Figure 5 Structural schematic diagram of the lock device in a multi-lock linkage device according to the present utility model.

[0023] Reference Signs:

[0024] 1. Lock device; 11. Lock head; 111. First fixing plate; 112. Lock core mounting plate; 113. Lock core; 114. Second fixing plate; 12. Lock seat; 121. Connection seat; 122. Lock shaft; 123. Fixed base; 124. Lock connection shaft; 1a. First lock device; 1b. Second lock device; 1c. Third lock device; 1d. Fourth lock device;

[0025] 2. Outdoor door handle; 21. Outer handle part; 22. Outer handle base; 23. Unlocking device; 24. Outer handle connecting piece;

[0026] 3. Inner door handle; 31. Inner handle base; 311. Notch; 32. Inner handle member; 321. Inner handle section; 322. Connecting section; 33. Connector; 331. Connecting rod; 332. Spherical sleeve; 333. Bolt; 34. Connecting piece; 341. First connecting piece; 3411. First connecting arm; 3412. First connecting shaft; 3413. First sliding seat; 342. Second connecting piece; 3421. Second connecting arm; 3422. Second connecting shaft; 3423. Second sliding seat; 3424. Second spherical sleeve; 35. Third connecting shaft;

[0027] 4. Diverting device; 41. First diverting base; 411. First diverting mounting seat; 412. First diverting arm; 42. Second diverting base; 421. Second diverting mounting seat; 422. Second diverting arm; 43. Third diverting base; 431. Third diverting mounting seat; 432. Third diverting arm; 44. Fourth diverting base; 441. Fourth diverting mounting seat; 442. Fourth diverting arm; 45. First linkage shaft; 46. Second linkage shaft; 47. Third linkage shaft; 48. Fourth linkage shaft; 49. Inner handle transmission shaft;

[0028] 5. Lock device transmission rod; 51. First lock device transmission rod; 52. Second lock device transmission rod; 53. Third lock device transmission rod; 54. Fourth lock device transmission rod; 541. Main transmission rod; 542. Auxiliary transmission rod;

[0029] 6. Door. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, unless otherwise specified, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "top", "bottom", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Such as Figure 1 、Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in Figure 2 , Figure 3 , Figure 4 and Figure 5 , a multi-lock linkage device includes a plurality of lock devices 1, and the plurality of lock devices 1 are respectively arranged at the same or different edges of a door 6. In this embodiment, the lock device includes a first lock device 1a, a second lock device 1b, a third lock device 1c and a fourth lock device 1d. The first lock device 1a is arranged at the bottom end of the door 6, the second lock device 1b is arranged at one side edge of the door 6, and the third lock device 1c and the fourth lock device 1d are arranged at the top end of the door 6. An outside door handle 2 is installed on the outer side of the door 6, an inside door handle 3 is installed on the inner side of the door 6, and a direction dividing device 4 is also installed on the inner side of the door 6. The direction dividing device 4 includes a plurality of direction dividing bases and a plurality of linkage shafts. The plurality of direction dividing bases are fixedly installed on the inner side of the door 6, and the linkage shafts are arranged on the direction dividing bases. Specifically, the direction dividing bases include a first direction dividing base 41, a second direction dividing base 42, a third direction dividing base 43 and a fourth direction dividing base 44. The first direction dividing base 41 is connected to the second direction dividing base 42 through a first linkage shaft 45, the second direction dividing base 42 is connected to the third direction dividing base 43 through a second linkage shaft 46, the fourth direction dividing base 44 is connected to the inside door handle 3 through a fourth linkage shaft 48. A third linkage shaft 47 is arranged on the second direction dividing base 42, the inside door handle 3 is connected to the third linkage shaft 47 through an inside handle transmission shaft 49, the outside door handle 2 is connected to the third linkage shaft 47, and the direction dividing device 4 is connected to the plurality of lock devices through a plurality of lock device transmission rods 5. The lock device transmission rods 5 are connected to the lock devices in a one-to-one correspondence.

[0033] In practical applications, the lock device transmission rods 5 include a first lock device transmission rod 51, a second lock device transmission rod 52, a third lock device transmission rod 53 and a fourth lock device transmission rod 54.

[0034] In practical applications, the first direction-changing base 41 includes a first direction-changing mounting seat 411 fixedly installed on the door 6. A first direction-changing arm 412 is movably connected to the first direction-changing mounting seat 411. One end of the first direction-changing arm 412 is connected to one end of the transmission rod 51 of the first locking device, and the other end of the transmission rod 51 of the first locking device is connected to the first locking device 1a. One end of the first direction-changing arm 412 is also connected to one end of the first linkage shaft 45. The second direction-changing base 42 includes a second direction-changing mounting seat 421 fixedly installed inside the door 6. A second direction-changing arm 422 is movably connected to the second direction-changing mounting seat 421. The other end of the first linkage shaft 45 is connected to the second direction-changing arm 422. One end of the second direction-changing arm 422 is connected to one end of the second linkage shaft 46. One end of the second direction-changing arm 422 is connected to one end of the third linkage shaft 47, and the other end of the third linkage shaft 47 is connected to the door outer handle 2 and the inner handle transmission shaft 49. The other end of the inner handle transmission shaft 49 is connected to the door inner handle 3. The third direction-changing base 43 includes a third direction-changing mounting seat 431 provided inside the door 6. A third direction-changing arm 432 is movably connected to the third direction-changing mounting seat 431. The other end of the second linkage shaft 46 is connected to the third direction-changing arm 432. One end of the third direction-changing arm 432 is connected to one end of the transmission rod 52 of the second locking device, and the other end of the transmission rod 52 of the second locking device is connected to the second locking device 1b. One end of the third direction-changing arm 432 is connected to one end of the transmission rod 53 of the third locking device, and the other end of the transmission rod 53 of the third locking device is connected to the third locking device 1c. The fourth direction-changing base 44 includes a fourth direction-changing mounting seat 441 provided inside the door 6. A fourth direction-changing arm 442 is movably connected to the fourth direction-changing mounting seat 441. One end of the fourth direction-changing arm 442 is connected to one end of the fourth linkage shaft 48, and the other end of the fourth linkage shaft 48 is connected to the door inner handle 3. The transmission rod 54 of the fourth locking device includes a transmission main rod 541 and a transmission sub-rod 542. One end of the transmission main rod 541 is connected to the fourth direction-changing arm 442, the other end of the transmission main rod 541 is connected to one end of the transmission sub-rod 542, and the other end of the transmission sub-rod 542 is connected to the fourth locking device 1d.

[0035] In practical applications, the inner door handle 3 includes an inner handle base 31 fixedly installed on the inner side of the door 6. An inner handle member 32 is disposed inside the inner handle base 31, and the inner handle member 32 is movably connected to the inner handle base 31. The inner handle member 32 includes an inner handle segment 321 movably connected to the inner handle base 31. A connecting segment 322 is connected to the inner handle segment 321, and a connecting head 33 is provided at the end of the connecting segment 322. Preferably, the connecting head 33 includes a bolt 333. The bolt 333 passes through the end of the connecting segment 322, and a spherical sleeve 332 is sleeved on the middle part of the bolt 333. The spherical sleeve 332 is also disposed inside the connecting segment 322. A connecting rod 331 is sleeved outside the spherical sleeve 332, and the connecting rod 331 is connected to the inner handle transmission shaft 49. A third connecting shaft 35 is provided on the inner handle segment 321, and a connecting member 34 is connected to the third connecting shaft 35. The connecting member 34 is movably disposed inside the inner handle base 31. Preferably, a notch 311 is provided on the side wall of the inner handle base 31. The connecting member 34 includes a first connecting member 341 and a second connecting member 342. The first connecting member 341 includes a first sliding seat 3413 disposed in the notch 311. One first sliding seat 3413 is provided in each of the notches 311 on the two side walls. The first sliding seat 3413 can slide in the notch 311. The first sliding seats 3413 are provided at both ends of the first connecting shaft 3412. A first connecting arm 3411 is sleeved on the middle part of the first connecting shaft 3412, and the other end of the first connecting arm 3411 is sleeved on the third connecting shaft 35. The second connecting member 342 includes a second connecting arm 3421, a second connecting shaft 3422, a second sliding seat 3423, and a second spherical sleeve 3424. One end of the second connecting arm 3421 is sleeved on the first connecting shaft 3412. The second sliding seat 3423 is disposed in the notch 311. One second sliding seat 3423 is provided in each of the notches 311 on the two side walls. The second sliding seats 3423 are provided at both ends of the second connecting shaft 3422. A second spherical sleeve 3424 is provided in the middle of the second connecting shaft 3422. A fourth linkage shaft 48 is sleeved outside the second spherical sleeve 3424, and the other end of the second connecting arm 3421 sleeved on the second connecting shaft 3422. By driving the handle, the fourth linkage shaft 48 and the inner handle transmission shaft 49 are simultaneously caused to move, thereby driving the dividing arm to rotate, and finally realizing the opening and closing of the locking device 1.

[0036] In practical applications, the outer door handle 2 includes an outer handle base 22 fixedly installed on the outside. An outer handle member 21 is arranged inside the outer handle base 22. One end of the outer handle member 21 is connected to an unlocking device 23, which can rotate inside the outer handle base 22. The bottom of the unlocking device 23 is connected to an outer handle connecting piece 24, and the outer handle connecting piece 24 is connected to the other end of the third linkage shaft 47. Driving the outer handle member 21 to rotate drives the unlocking device 23 to rotate inside the outer handle base 22, causing the outer handle connecting piece 24 to rotate accordingly, and then driving the movement of the third linkage shaft 47 to drive the dividing arm to rotate, ultimately achieving the opening of the lock.

[0037] In practical applications, the lock device 1 includes a lock base 12 fixedly installed on the inner side of the door 6. The lock base 12 is connected to a lock head 11. The lock base 12 includes a fixed base 123 fixedly installed on the inner side of the door 6. A lock shaft 122 passes through the fixed base 123. One end of the lock shaft 122 is connected to a connecting seat 121, and the other end is connected to the lock head 11. Preferably, the connecting seat 121 and the lock shaft 122 are connected by a lock connecting shaft 124. The lock head 11 includes a first fixing plate 111 installed on the inner side of the door 6. A lock core mounting plate 112 is fixedly installed on the first fixing plate 111. A lock core 113 is arranged on the lock core mounting plate 112, and the lock shaft 122 is connected to the lock core 113. Preferably, the lock head 11 further includes a second fixing plate 114, which is arranged between the first fixing plate 111 and the lock core mounting plate 112, and the lock shaft 122 passes through the second fixing plate 114 and is connected to the lock core 113.

[0038] Advantages of the implementation of the present utility model: Multiple lock devices are connected to the dividing device through lock device transmission rods to realize the control of multiple lock devices by the inner door handle and the outer door handle; by movably installing the dividing arm on the dividing mounting seat, the dividing connection of the lock devices is realized, achieving the linkage between lock devices at different positions. The structure is simple and convenient for installation; multiple lock devices are respectively arranged on the same or different edges of the door, and under the linkage of the dividing device, the entire plane of the door is always kept under a certain force for opening and closing, improving the stability of the overall structure of the door. A multi-lock linkage device provided by the present utility model can ensure that the entire plane of the door is always kept under a certain force for opening and closing, improving the stability of the overall structure of the door. Its overall structure is simple and convenient for installation.

[0039] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A multi-lock linkage device, comprising a plurality of lock devices (1), the plurality of lock devices (1) being respectively arranged on the same or different edges of a door (6), the lock devices including a first lock device (1a), a second lock device (1b), a third lock device (1c) and a fourth lock device (1d); an outside door handle (2) is installed on the outer side of the door (6), and an inside door handle (3) is installed on the inner side of the door (6); characterized in that, It further includes a direction-dividing device (4). The direction-dividing device (4) includes a plurality of direction-dividing bases and a plurality of linkage shafts. A plurality of the direction-dividing bases are all installed inside the door (6). The direction-dividing bases include a first direction-dividing base (41), a second direction-dividing base (42), a third direction-dividing base (43), and a fourth direction-dividing base (44). The first direction-dividing base (41) is connected to the second direction-dividing base (42) through a first linkage shaft (45). The second direction-dividing base (42) is connected to the third direction-dividing base (43) through a second linkage shaft (46). The fourth direction-dividing base (44) is connected to the inner door handle (3) through a fourth linkage shaft (48). A third linkage shaft (47) is arranged on the second direction-dividing base (42). The inner door handle (3) is connected to the third linkage shaft (47) through an inner handle transmission shaft (49). The outer door handle (2) is connected to the third linkage shaft (47). The direction-dividing device (4) is connected to a plurality of the locking devices through a plurality of locking device transmission rods (5). The locking device transmission rods (5) are connected to the locking devices in a one-to-one correspondence.

2. The multi-lock linkage device according to claim 1, wherein The direction-dividing base includes a direction-dividing mounting seat fixedly installed on the door (6), and a direction-dividing arm is movably connected to the direction-dividing mounting seat.

3. The multi-lock linkage device according to claim 2, characterized in that The locking device transmission rods (5) include a first locking device transmission rod (51), a second locking device transmission rod (52), a third locking device transmission rod (53), and a fourth locking device transmission rod (54). One end of the first locking device transmission rod (51) is connected to the direction-dividing arm of the first direction-dividing base (41), and the other end is connected to the first locking device (1a). One end of the second locking device transmission rod (52) is connected to the direction-dividing arm of the third direction-dividing base (43), and the other end is connected to the second locking device (1b). One end of the third locking device transmission rod (53) is connected to the direction-dividing arm of the third direction-dividing base (43), and the other end is connected to the third locking device (1c). One end of the fourth locking device transmission rod (54) is connected to the direction-dividing arm of the fourth direction-dividing base (44), and the other end is connected to the fourth locking device (1d).

4. The multi-lock linkage device according to claim 3, characterized in that, The fourth locking device transmission rod (54) includes a transmission main rod (541). One end of the transmission main rod (541) is connected to the direction-dividing arm of the fourth direction-dividing base (44), and the other end is connected to a transmission sub-rod (542). The transmission sub-rod (542) is connected to the fourth locking device (1d).

5. The multi-lock linkage device according to claim 1, characterized in that, The inner door handle (3) includes an inner handle base (31) fixedly installed on the inner side of the door (6). An inner handle member (32) is movably connected to the inner handle base (31). The inner handle member (32) includes an inner handle section (321) movably connected inside the inner handle base (31). A third connecting shaft (35) is provided on the inner handle section (321). One end of the inner handle section (321) is provided with a connecting section (322). The connecting section (322) is connected to the inner handle transmission shaft (49) through a connecting head (33). A connecting member (34) is movably arranged inside the inner handle base (31). One end of the connecting member (34) is connected to the third connecting shaft (35), and the other end is connected to the fourth linkage shaft (48).

6. The multi-lock linkage device according to claim 5, wherein, The connecting member (34) includes a first connecting member (341) arranged inside the inner handle base (31) and connected to the third connecting shaft (35), and a second connecting member (342) arranged inside the inner handle base (31) and connected to the first connecting member (341). The second connecting member (342) is connected to the fourth linkage shaft (48).

7. The multi-lock linkage device according to claim 5, wherein The connecting head (33) includes a bolt (333) passing through the end of the connecting section (322). A spherical sleeve (332) is sleeved on the middle of the bolt (333). A connecting rod (331) is sleeved outside the spherical sleeve (332). The connecting rod (331) is connected to the inner handle transmission shaft (49).

8. The multi-lock linkage device according to claim 1, characterized in that, The lock device includes a lock seat (12) fixedly installed on the inner side of the door (6) and a lock head (11) connected to the lock seat (12). The lock seat (12) includes a fixed base (123) fixedly installed on the inner side of the door (6). A lock shaft (122) is arranged inside the fixed base (123). One end of the lock shaft is connected to a connecting seat (121), and the other end is connected to the lock head (11). The other end of the connecting seat (121) is connected to the lock device transmission rod (5).

9. The multi-lock linkage device according to claim 8, wherein, The lock head (11) includes a first fixing plate (111) installed on the inner side of the door (6). A lock core mounting plate (112) is fixedly installed on the first fixing plate (111). A lock core (113) is arranged on the lock core mounting plate (112). The lock shaft (122) is connected to the lock core (113).

10. The multi-lock linkage device according to claim 1, characterized in that, The outer door handle (2) includes an outer handle base (22) fixedly installed on the outer side of the door. An outer handle member (21) is arranged inside the outer handle base (22). One end of the outer handle member (21) is connected to an unlocking device (23). An outer handle connecting piece (24) is connected to the unlocking device (23). The outer handle connecting piece (24) is connected to the third linkage shaft (47).

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