Multi-point linkage locking latch system

Abstract

The utility model provides a multi-point linkage locking latch body system. The multi-point linkage locking latch body system comprises an unlocking assembly, a connecting rod and at least two latch body assemblies. The unlocking assembly is provided with an unlocking rotating shaft, the unlocking rotating shaft is connected with a latch body assembly, and the multi-point linkage locking latch body system is unlocked or locked through rotation of the unlocking rotating shaft; each latch body assembly comprises a transmission component and a spring bolt component; a transmission relation exists between the transmission component and the spring bolt component, and the spring bolt component is driven to have a first rotating state in the locking process and a second rotating state in the unlocking process. The connecting rod is connected between the two adjacent latch body assemblies, and the spring bolt components in the two adjacent latch body assemblies are promoted to simultaneously reach a first rotating state during locking or a second rotating state during unlocking. A plurality of latch body assemblies can be unlocked or locked at the same time, and the reliability of linkage between the latch body assemblies is improved; all the latch body assemblies are the same in structure, and the difficulty of producing, installing and maintaining the locking system by operators is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a multi-point linkage locking latch system. Background Art

[0002] Multi-point linkage locks are locks with multiple locking points, which can lock multiple positions of the locked device at the same time in the locked state, so they can provide higher security and sealing. In addition, since the lock tongues of the multi-point linkage locks are distributed at multiple positions of the locked device, when locked, the pressure of the locked device can be evenly dispersed, so the deformation of the locked device can be effectively avoided and its service life can be extended. Multi-point linkage locks are widely used in doors, windows, cabinets, boxes and other occasions that require strong locking and protection due to their good functionality and safety.

[0003] However, in the current application of multi-point linkage locks, the following problems still exist:

[0004] In the existing multi-point linkage locking system locks, the main driving latch body part used for manual control and the passive latch body part used for linkage with the active latch body part mostly adopt different structures, which brings inconvenience to the design, production, installation, maintenance and repair of the multi-point linkage locking system. The design and production costs are high, and operators need to face different structures during installation, maintenance and repair.

[0005] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a topic to be studied and solved in the present invention. Summary of the invention

[0006] The utility model aims to provide a multi-point linkage locking latch system.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multi-point linkage locking latch body system, including an unlocking assembly, a connecting rod and at least two latch body assemblies; the unlocking assembly has an unlocking shaft, the unlocking shaft is connected to one of the latch body assemblies, and the multi-point linkage locking latch body system is unlocked or locked by rotating the unlocking shaft; each of the latch body assemblies includes a transmission component and a lock tongue component; the transmission component includes a rack, a gear shaft and a latch body housing, the rack is transmission-connected to the gear shaft, the rack is driven to undergo a linear displacement along its length direction, and drives the gear shaft to rotate around a first axis; the gear shaft is positioned and connected to the lock tongue component, the gear shaft rotates and drives the lock tongue component to rotate around the first axis; the latch body housing is sleeved on the gear shaft, the latch body housing has a transmission surface; the lock tongue component has a transmission end face; the transmission surface and the transmission end face are respectively provided with two sets of first gear teeth and second gear teeth that mesh with each other gear teeth, and there is a transmission angle between the transmission end face and the transmission surface, forcing the first gear tooth portion to mesh and transmit to the second gear tooth; while the lock tongue component is driven by the gear shaft to rotate around the first axis, it is also transmitted with the latch body shell and rotates around a second axis. During the movement of the lock tongue component, the lock tongue component has a first rotation state when locked and a second rotation state when unlocked; wherein, there is an angle between the second axis and the first axis; the connecting rod is connected between the racks of two adjacent latch body assemblies, and the unlocking shaft drives a rack to perform linear motion along its own length direction, and the rack drives the connecting rod connected thereto to perform linear motion together, and further drives the racks of other latch body assemblies connected to the connecting rod to perform linear motion, and when each rack undergoes linear displacement, it drives a corresponding lock tongue component to complete the same rotation action at the same time, prompting the lock tongue component to reach the first rotation state when locked or the second rotation state when unlocked.

[0008] A further technical solution is that a plurality of third gear teeth are arranged circumferentially of the gear shaft, the rack has a first rack acting surface, a first rack body for meshing with the third gear teeth is arranged on the first rack acting surface, the rack makes a linear displacement along its own length direction, and the gear shaft is driven to rotate around the first axis by the first rack body on the first rack acting surface.

[0009] According to a further technical solution, at least two latch body assemblies are divided into an active latch body assembly and at least one driven latch body assembly, wherein the lock tongue member in the active latch body assembly is unlocked or locked by being driven by the unlocking shaft of the unlocking assembly; and the lock tongue member in at least one driven latch body assembly is unlocked or locked by being driven by the rack of the active latch body assembly or the rack of the other driven latch body assembly.

[0010] A further technical solution also includes a rotating part, which is driven by the unlocking shaft to rotate around a third axis and drives the rack in the active latch body assembly to move linearly along its own length direction; the third axis is parallel to the first axis.

[0011] According to a further technical solution, the rotating part has an arcuate surface, and a plurality of fourth gear teeth are arranged on the circumference of the arcuate surface; the rack belonging to the active latch body assembly also has a second rack action surface, and a second rack body for meshing with the fourth gear teeth is arranged on the second rack action surface. The rotating part is driven by the unlocking shaft of the unlocking assembly to rotate around the third axis, and the rotation acts on the second rack action surface, driving the rack to make a linear displacement along its own length direction.

[0012] According to a further technical solution, the rotating part further has a rotating hole, and the rotating hole is limit-connected with the unlocking shaft.

[0013] According to a further technical solution, each of the latch body assemblies further comprises a steering housing, wherein the steering housing (4) is sleeved at the connection between the locking tongue component and the latch body housing.

[0014] According to a further technical solution, each of the latch body assemblies further includes a connecting piece, and the gear shaft and the lock tongue component are positioned and connected via the connecting piece.

[0015] According to a further technical solution, the unlocking assembly includes a crank lock or a rotary lock.

[0016] The working principle and advantages of this utility model are as follows:

[0017] 1. The multi-point linkage locking latch body system includes at least two latch body assemblies, and two adjacent latch body assemblies are connected by a connecting rod, specifically, the racks in the two adjacent latch body assemblies are connected by a connecting rod, so that the racks in the latch body assemblies can be linearly displaced in the same direction, thereby realizing that the lock tongue components in multiple latch body assemblies are unlocked or locked at the same time, thereby improving the reliability of the linkage between the latch body assemblies.

[0018] 2. The structures of all latch body components are the same. Operators need to face the same structure during installation, maintenance and repair, which reduces the difficulty of designing, producing, installing, maintaining and repairing the multi-point linkage locking system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 A three-dimensional schematic diagram of a multi-point linkage locking latch system according to an embodiment of the present utility model;

[0020] Attached Figure 2 An exploded view of a latch assembly according to an embodiment of the present utility model;

[0021] Attached Figure 3A cross-sectional view of a latch assembly according to an embodiment of the present utility model;

[0022] Attached Figure 4 A side view of a latch assembly according to an embodiment of the present utility model;

[0023] Attached Figure 5 A top view of a latch assembly according to an embodiment of the present utility model;

[0024] Attached Figure 6 A schematic diagram of the unlocking process of the multi-point linkage locking latch system according to an embodiment of the utility model;

[0025] Attached Figure 7 Schematic diagram of the locking process of the multi-point linkage locking latch system according to an embodiment of the present utility model.

[0026] In the above attached figure:

[0027] 00-first rotation state; 01-second rotation state;

[0028] 1-unlocking assembly; 200-active latch assembly; 201-active latch assembly; 3-connecting rod; 4-steering housing; 5-connecting member; 6-first axis; 7-second axis; 8-third axis; 9-rotating part;

[0029] 11-unlocking shaft; 21-transmission component; 22-lock tongue component;

[0030] 211- rack; 212- gear shaft; 213- latch housing; 214- transmission angle;

[0031] 2111-first rack action surface; 2112-first rack body; 2113-second rack body;

[0032] 2121-third gear tooth;

[0033] 2131-transmission surface; 21311-first gear tooth;

[0034] 221-transmission end face; 2211-second gear tooth;

[0035] 91 - fourth gear tooth; 92 - rotating hole. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0037] Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0038] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0039] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0040] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0041] The words “include,” “including,” and “have” used in this document are open-ended terms, meaning including but not limited to.

[0042] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0043] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0044] See attached Figure 1 As shown, the multi-point linkage locking latch body system in this embodiment includes an unlocking component 1, a connecting rod 3 and at least two latch body components; wherein each latch body component serves as a locking point of a locked object (such as a door, window, cabinet, box, etc.), and the multi-point linkage locking latch body system in this embodiment includes multiple locking points, which can improve the sealing of the locked object and the reliability during locking. In order to ensure that a locked object is locked or unlocked at the same time using multiple locking points, the linkage between at least two latch body components needs to be considered. For example, in this embodiment, at least two latch body components are divided into an active latch body component 200 and at least one driven latch body component 201, and the active latch body component 200 is transmission-connected to the driven latch body component 201, so that the two can achieve the purpose of simultaneous locking or unlocking.

[0045] Optionally, the unlocking assembly 1 includes a crank lock or a rotary lock.

[0046] The unlocking assembly 1 has an unlocking shaft 11, which is connected to a latch body assembly. It can be understood that the latch body assembly connected to the unlocking shaft 11 is the active latch body assembly 200 in this embodiment. The unlocking shaft 11 controls the locking or unlocking of the lock tongue member 22 in the active latch body assembly 200. The active latch body assembly 200 is transmission-connected with other driven latch body assemblies 201 (specifically, the rack 211 in the active latch body assembly 200 is connected with the rack 211 in the other driven latch body assembly 201), thereby controlling the locking or unlocking of the entire locking latch body system.

[0047] like Figure 2~Figure 3 As shown, in this embodiment, each latch body assembly includes a transmission component 21 and a lock tongue component 22.

[0048] The transmission component 21 includes a rack 211 , a gear shaft 212 and a latch body housing 213 . The rack 211 is transmission-connected to the gear shaft 212 , and the rack 211 is driven to linearly displace along its own length direction and drive the gear shaft 212 to rotate around the first axis 6 .

[0049] When the rack 211 belongs to the active latch body assembly 200 , the rack 211 is driven by the unlocking shaft 11 ; when the rack 211 belongs to the driven latch body assembly 201 , the rack 211 is driven by the rack 211 in the active latch body assembly 200 .

[0050] Optionally, the rack 211 and the gear shaft 212 are connected in transmission as follows: a plurality of third gear teeth 2121 are circumferentially arranged on the gear shaft 212, the rack 211 has a first rack action surface 2111, a first rack body 2112 for meshing with the third gear teeth 2121 is arranged on the first rack action surface 2111, the rack 211 makes a linear displacement along its own length direction, and the gear shaft 212 is driven to rotate around the first axis 6 via the first rack body 2112 on the first rack action surface 2111.

[0051] like Figure 5 As shown, optionally, the multi-point linkage locking latch body system also includes a rotating part 9, which is transmission-connected between the unlocking shaft 11 and the rack 211. The rotating part 9 is driven by the unlocking shaft 11 to rotate around a third axis 8, and drives the rack 211 in the active latch body assembly 200 to move linearly along its own length direction.

[0052] Specifically, the rotating part 9 has an arc-shaped surface, and a plurality of fourth gear teeth 91 are arranged in the circumference of the arc-shaped surface; the rack 211 in the active latch body assembly 200 has a second rack action surface, and a second rack body 2113 for meshing with the fourth gear teeth 91 is arranged on the second rack action surface. The rotating part 9 rotates around the third axis 8 driven by the unlocking shaft 11 of the unlocking assembly 1, and the rotation acts on the second rack action surface, driving the rack 211 to make a linear displacement along its own length direction.

[0053] Optionally, the rack 211 can have two different structural forms, that is, it can be divided into an active rack belonging to the active latch body assembly 200 and a driven rack belonging to the driven latch body assembly 201. Since the driven rack is connected to the active rack through the connecting rod 3, it only needs to cooperate with the gear shaft 212 for rotation. Therefore, the driven rack only needs to have a first rack action surface 2111 for cooperating with the gear shaft 212 for transmission; since the active rack needs to be driven by the unlocking shaft 11 on the one hand, and also needs to drive the gear shaft 212 to rotate on the other hand, the active rack 2 needs to have a first rack action surface 2111 for cooperating with the gear shaft 212 for transmission and a second rack action surface for cooperating with the rotating part 9 for transmission.

[0054] More specifically, the rotating portion 9 has a rotating hole 92 , and the rotating hole 92 is positionally connected to the unlocking shaft 11 . The unlocking shaft 11 can drive the rotating portion 9 to rotate together through the rotating hole 92 .

[0055] In one embodiment, the multi-point linkage locking latch body system includes an active latch body assembly 200 and two driven latch body assemblies 201, and the two racks 211 of the two driven latch body assemblies 201 are respectively connected to the two sides of the rack 211 of the active latch body assembly 200 by a connecting rod 3, then the lock tongue member 22 in the active latch body assembly 200 is locked or unlocked by the unlocking shaft 11 of the unlocking assembly 1, and the lock tongue members 22 of the two driven latch body assemblies 201 are locked or unlocked by the drive of the rack 211 in the active latch body assembly 200.

[0056] In another embodiment, the multi-point linkage locking latch body system includes an active latch body assembly 200 and two driven latch body assemblies 201, and the two driven latch body assemblies 201 are divided into a first driven latch body assembly 201 directly connected to the active latch body assembly 200 and a second driven latch body assembly 201 connected to the first driven latch body assembly 201. At this time, the lock tongue member 22 in the active latch body assembly 200 is locked or unlocked by the unlocking shaft 11 of the unlocking assembly 1, the lock tongue member 22 of the first driven latch body assembly 201 is locked or unlocked by the rack 211 in the active latch body assembly 200, and the lock tongue member 22 of the second driven latch body assembly 201 is locked or unlocked by the rack 211 of the first driven latch body assembly 201.

[0057] In this embodiment, the first axis 6 is parallel to the third axis 8 .

[0058] The gear shaft 212 is positioned and connected to the locking tongue member 22 . The gear shaft 212 rotates and drives the locking tongue member 22 to rotate around the first axis 6 .

[0059] For example, the gear shaft 212 rotates clockwise around the first axis 6 and drives the lock tongue member 22 to rotate counterclockwise around the first axis 6 ; or, the gear shaft 212 rotates counterclockwise around the first axis 6 and drives the lock tongue member 22 to rotate clockwise around the first axis 6 .

[0060] Furthermore, the latch body assembly further comprises a connecting member 5, through which the gear shaft 212 and the bolt member 22 are positioned and connected.

[0061] Optionally, the connecting member 5 is a step screw.

[0062] See also Figure 4 The latch body shell 213 is sleeved on the gear shaft 212, the latch body shell 213 has a transmission surface 2131, and the lock tongue component 22 has a transmission end face 221. Two groups of first gear teeth 21311 and second gear teeth 2211 that mesh with each other are respectively arranged on the transmission surface 2131 and the transmission end face 221, and a transmission angle 214 is provided between the transmission end face 221 and the transmission surface 2131, forcing the first gear teeth 21311 to partially mesh and transmit with the second gear teeth 2211.

[0063] Optionally, the latch body assembly further includes a steering housing 4 , which is sleeved at the connection between the locking tongue member 22 and the latch body housing 213 .

[0064] The lock tongue member 22 is driven by the gear shaft 212 to rotate around the first axis 6, and also transmits with the latch body housing 213 and rotates around the second axis 7. During the movement of the lock tongue member 22, the lock tongue member 22 has a first rotation state 00 when locked and a second rotation state 01 when unlocked;

[0065] There is an included angle between the second axis 7 and the first axis 6 .

[0066] In this embodiment, the first axis 6 is the axis of the gear shaft 212, and the second axis 7 is the axis in the normal direction of the transmission end face 221. During the movement of the locking tongue member 22, the first axis 6 is the axis with a fixed position, and the second axis 7 is the axis with a changing position. There is always an angle between the second axis 7 and the first axis 6. It is worth noting that the angle is the same as the transmission angle 214 between the above-mentioned transmission end face 221 and the transmission surface 2131.

[0067] The connecting rod 3 is connected between the racks 211 of two adjacent latch body assemblies. The unlocking shaft 11 drives the rack 211 belonging to the active latch body assembly 200 to make a linear motion along its own length direction. The rack 211 drives the connecting rod 3 connected thereto to make a linear motion, and further drives the racks 211 of other latch body assemblies connected to the connecting rod 3 to make a linear motion. When each rack 211 undergoes a linear displacement, it drives a corresponding lock tongue component 22 to complete the same rotation action at the same time, prompting the lock tongue component 22 to reach the first rotation state 00 when locked or the second rotation state 01 when unlocked.

[0068] See also Figure 6 When this embodiment is applied to an unlocking scenario, the unlocking process is as follows:

[0069] (1) Unlock the crank lock (rotary lock) with the key and lift the handle of the crank lock (rotary lock);

[0070] (2) The handle of the crank lock (rotary lock) is rotated, and the handle drives the rotating part 9 on the active latch body assembly 200 to rotate around the third axis 8. The rotating part 9 drives the rack 211 in the active latch body to move linearly. On the one hand, the rack 211 drives the direction of the lock tongue member 22 in the active latch body assembly 200 to change. Specifically, the rack 211 drives the gear shaft 212 to rotate around the first axis 6. The first axis 6 is parallel to the third axis 8. Since the gear shaft 212 and the lock tongue member 22 are positioned and connected by the connecting piece 5, they can rotate around the first axis 6 under the drive of the gear shaft 212. At the same time, the latch body shell 213 has a transmission surface 2131, and the lock tongue member 22 has a transmission end face 221. The transmission surface 2131 and the transmission end face 221 are respectively provided with two sets of mutually meshing The first gear teeth 21311 and the second gear teeth 2211 are engaged, and a transmission angle 214 is formed between the transmission end face 221 and the transmission surface 2131, forcing the first gear teeth 21311 to partially mesh with and transmit to the second gear teeth 2211, so that the lock tongue member 22 rotates around the first axis 6 and the second axis 7 at the same time, thereby realizing the change of the direction of the lock tongue member 22, prompting the lock tongue member 22 to reach the second rotation state 01 when unlocked; on the other hand, the rack 211 also drives the connecting rod 3 connected thereto to make a linear motion, and further drives the racks 211 of other driven latch body assemblies 201 transmission-connected to the connecting rod 3 to make a linear motion, which can simultaneously realize that the lock tongue members 22 in multiple latch body assemblies simultaneously reach the second rotation state 01 when unlocked, thereby completing the unlocking.

[0071] See also Figure 7 When this embodiment is applied to a locking scenario, the locking process is as follows:

[0072] (1) Use a key to rotate the handle of the crank lock (rotary lock) in the opposite direction, so as to drive the active rack 211 in the active latch body assembly 200 to make a linear motion in the opposite direction to the active rack 211 in the unlocking process, and drive the gear shaft 212 to make a rotational motion in the opposite direction to the gear shaft 212 in the unlocking process, thereby driving the lock tongue member 22 to reach the first rotational state 00 when locked; at the same time, the active rack 211 also drives the racks 211 of other driven latch body assemblies 201 to make linear motion in the opposite direction to the unlocking process, thereby the lock tongue structures in more than ten latch body assemblies simultaneously reach the first rotational state 00 when locked.

[0073] (2) Push the handle of the crank lock (rotary lock) back into its body and remove the key to complete the locking.

[0074] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-point linkage locking latch system, characterized in that: It comprises an unlocking assembly (1), a connecting rod (3) and at least two latch body assemblies; The unlocking assembly (1) has an unlocking rotating shaft (11), the unlocking rotating shaft (11) is connected to a latch body assembly, and the multi-point linkage locking latch body system is unlocked or locked by rotating the unlocking rotating shaft (11); Each of the latch body assemblies comprises a transmission component (21) and a locking tongue component (22); The transmission component (21) comprises a rack (211), a gear shaft (212) and a latch body housing (213); the rack (211) is in transmission connection with the gear shaft (212); the rack (211) is driven to move linearly along its length direction and drives the gear shaft (212) to rotate around the first axis (6); The gear shaft (212) is positioned and connected to the locking tongue component (22); the gear shaft (212) rotates and drives the locking tongue component (22) to rotate around the first axis (6); The latch body shell (213) is sleeved on the gear shaft (212), and the latch body shell (213) has a transmission surface (2131); the lock tongue component (22) has a transmission end surface (221); the transmission surface (2131) and the transmission end surface (221) are respectively provided with two groups of mutually meshing first gear teeth (21311) and second gear teeth (2211), and a transmission angle (214) is formed between the transmission end surface (221) and the transmission surface (2131), forcing the first gear teeth (21311) to partially mesh with the second gear teeth (2211); The locking tongue component (22) is driven by the gear shaft (212) to rotate about the first axis (6), and is also coupled with the latch body housing (213) to rotate about a second axis (7). During the movement of the locking tongue component (22), the locking tongue component (22) has a first rotation state (00) when locked and a second rotation state (01) when unlocked; Wherein, there is an angle between the second axis and the first axis (6); The connecting rod (3) is connected between the racks (211) of two adjacent latch body assemblies. The unlocking shaft (11) drives a rack (211) to perform linear motion along its length direction. The rack (211) drives the connecting rod (3) connected thereto to perform linear motion, and further drives the racks (211) of other latch body assemblies that are transmission-connected to the connecting rod (3) to perform linear motion. When each rack (211) undergoes linear displacement, it drives a corresponding lock tongue component (22) to perform the same rotational motion at the same time, thereby causing the lock tongue component (22) to reach a first rotational state (00) when locked or a second rotational state (01) when unlocked.

2. The multi-point linkage locking latch system according to claim 1, characterized in that: A plurality of third gear teeth (2121) are arranged in the circumferential direction of the gear shaft (212); the rack (211) has a first rack action surface (2111); a first rack body (2112) for meshing with the third gear teeth (2121) is arranged on the first rack action surface (2111); the rack (211) performs a linear displacement along its own length direction; the gear shaft (212) is driven to rotate around the first axis (6) by the first rack body (2112) on the first rack action surface (2111).

3. The multi-point linkage locking latch system according to claim 1, characterized in that: The at least two latch body assemblies are divided into an active latch body assembly (200) and at least one passive latch body assembly (201); The locking tongue component (22) in the active latch body assembly (200) is unlocked or locked by being driven by the unlocking shaft of the unlocking assembly; The bolt member (22) in at least one of the driven latch body assemblies (201) is unlocked or locked by being driven by the rack (211) of the active latch body assembly (200) or the rack (211) of the other driven latch body assembly (201).

4. The multi-point linkage locking latch system according to claim 3, characterized in that: It also comprises a rotating part (9), wherein the rotating part (9) is driven by the unlocking shaft (11) to rotate around a third axis (8), and drives the rack (211) in the active latch body assembly (200) to perform linear motion along its own length direction; Wherein, the third axis (8) is parallel to the first axis (6).

5. The multi-point linkage locking latch system according to claim 4, characterized in that: The rotating portion (9) has an arcuate surface, and a plurality of fourth gear teeth (91) are arranged on the circumference of the arcuate surface; The rack (211) subordinate to the active latch body assembly (200) also has a second rack action surface, on which a second rack body (2113) for meshing with the fourth gear teeth (91) is arranged. The rotating portion (9) is driven by the unlocking shaft (11) of the unlocking assembly (1) to rotate around the third axis (8), and the rotation acts on the second rack action surface and drives the rack (211) to make a linear displacement along its own length direction.

6. The multi-point linkage locking latch system according to claim 4, characterized in that: The rotating portion (9) further comprises a rotating hole (92), and the rotating hole (92) is position-limitingly connected to the unlocking rotating shaft (11).

7. The multi-point linkage locking latch system according to claim 1, characterized in that: Each of the latch body assemblies further comprises a steering housing (4), wherein the steering housing (4) is sleeved at the connection between the locking tongue component (22) and the latch body housing (213).

8. The multi-point linkage locking latch system according to claim 1, characterized in that: Each of the latch body assemblies further comprises a connecting piece (5), and the gear shaft (212) and the locking tongue component (22) are positioned and connected via the connecting piece (5).

9. The multi-point linkage locking latch system according to claim 1, characterized in that: The unlocking component (1) comprises a crank lock or a rotary lock.

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