Multi-point linkage tensioning and locking crank lock system

Abstract

The utility model relates to the technical field of locks, in particular to a multipoint linkage tensioning and locking crank lock system which comprises a crank lock, a connecting rod, a plurality of steering parts and a plurality of tensioning locks. The tensioning locks are distributed at intervals along the length extension direction of the connecting rod; the crank lock comprises a crank lock body, a rotating piece and a handle; the rotating piece is rotatably arranged on the crank lock body and is movably connected with the connecting rod through one of the steering pieces; the handle is arranged on the rotating piece; each tensioning lock comprises a tensioning lock body, a tensioning lock core and a tensioning lock tongue; the tensioning lock core is arranged on the tensioning lock body and is movably connected with the connecting rod through one steering piece; and the tensioning spring bolt is arranged on the tensioning lock core. The tensioning locks are in linkage with the connecting rods through the steering pieces, and compared with a traditional mode that linkage is conducted through gears and racks, the structure is simple, and cost is reduced; in addition, the tensioning lock tongues in the tensioning locks can press the doors and windows tightly, and the leakproofness and the safety are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lockset, concretely relates to multi-point linkage tension locking crank lock system. BACKGROUND

[0002] In the field of lockset, multi-point linkage crank lock is widely used in occasions requiring safety protection and airtightness, such as doors and windows, as a common type of lockset. The traditional multi-point linkage crank lock drives the internal mechanism by shaking the crank to realize the synchronous action of multiple lock points, thereby achieving the purpose of locking the door and window.

[0003] At present, the traditional multi-point linkage crank lock has the following problems:

[0004] The traditional multi-point linkage crank lock lacks tensioning function and cannot compress the door and window when locking, which may cause gaps in the locked door and window, affecting airtightness and safety.

[0005] The traditional multi-point linkage crank lock usually uses complex drive mechanisms such as gear and rack to realize the synchronous action of multiple lock points. These complex drive mechanisms not only increase the cost of the lockset, but also make the assembly process more complicated and reduce the production efficiency. At the same time, the complex drive mechanism also increases the failure rate and maintenance difficulty of the lockset.

[0006] Therefore, how to solve the above-mentioned problems of the prior art, such as the lack of tensioning function of the traditional multi-point linkage crank lock and the complexity of the drive structure, has become the research topic of the utility model. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims to provide a multi-point linkage tension locking crank lock system.

[0008] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] The multi-point linkage tension locking crank lock system is used for multi-point linkage tension locking of doors and windows. The system includes a crank lock, a connecting rod, multiple turning parts, and multiple tension locks. The tension locks are distributed along the length extension direction of the connecting rod.

[0010] The crank lock includes a crank lock body, a turning part, and a handle. The turning part is rotatably arranged in the crank lock body and is movably connected to the connecting rod through one of the turning parts. The turning part can drive the turning part to rotate around a predetermined axis and drive the connecting rod to move. The handle is arranged on the turning part.

[0011] The tension lock comprises a tension lock body, a tension lock core and a tension lock tongue; the tension lock core is arranged in the tension lock body and is movably connected with the connecting rod through one of the turning pieces; the tension lock core can rotate around a predetermined axis and move along the axial direction of the predetermined axis; the tension lock tongue is arranged in the tension lock core.

[0012] The multi-point linkage tension locking handle lock system is configured to have an unlocking state, a locking state and a pressing state.

[0013] In the unlocking state, each tension lock tongue is separated from the door and window.

[0014] In the locking state, each tension lock tongue is attached to the door and window.

[0015] In the pressing state, each tension lock tongue is attached to the door and window and exerts pressure on the door and window.

[0016] In the process of switching from the unlocking state to the locking state, the handle drives the turning piece to rotate by a first predetermined angle, and the turning piece promotes the adjacent turning piece, the connecting rod, the turning piece close to each tension lock core, each tension lock core and each tension lock tongue to move in sequence, so that each tension lock tongue is attached to the door and window.

[0017] In the process of switching from the locking state to the pressing state, the handle drives the turning piece to rotate by a second predetermined angle, and the turning piece promotes the adjacent turning piece, the connecting rod, the turning piece close to each tension lock core, each tension lock core and each tension lock tongue to move in sequence, so that each tension lock tongue moves along the thickness direction of the door and window to be tensioned, so as to press and fix the door and window.

[0018] Here, the multi-point linkage tension locking handle lock system is switched from the unlocking state to the pressing state in sequence, and the purpose of switching is to press the door and window, which is as follows: in the process of pressing the door and window, the handle first drives the turning piece to rotate by a first predetermined angle (such as ninety degrees), and the turning piece promotes the adjacent turning piece, the connecting rod, the turning piece close to each tension lock core, each tension lock core and each tension lock tongue to move in sequence, so that each tension lock tongue is attached to the door and window, and then the handle drives the turning piece to rotate by a second predetermined angle (such as forty-five degrees), and the turning piece drives each tension lock tongue to gradually contract and tension through each tension lock core, so as to press and fix the door and window.

[0019] With the above configuration, each tensioning lock is linked to the connecting rod via the steering component, enabling the synchronous movement of each tensioning bolt. Compared to the traditional linkage method using gears and racks, this method is simpler in structure, lower in cost, easier to assemble, and reduces the failure rate and maintenance difficulty of the locks. In addition, the tensioning bolts in each tensioning lock can be driven by the handle to apply pressure to the doors and windows synchronously to tighten them, preventing gaps after the doors and windows are locked, thus improving airtightness and security.

[0020] In a further technical solution, the crank lock also includes a crank lock cylinder disposed on the handle and having a crank lock hole; the handle is provided with a dust cover for covering the opening of the crank lock hole.

[0021] The dust cover can slide or rotate relative to the crank lock body, depending on specific needs. When the key is not inserted into the crank lock hole, the dust cover seals the opening of the crank lock hole, preventing dust and other debris from entering the crank lock cylinder and extending the service life of the crank lock.

[0022] In a further technical solution, the dust cover can rotate relative to the handle about a predetermined axis.

[0023] The dust cover here has a first end and a second end. The first end is rotatably connected to the handle via a pivot. At this time, the predetermined axis is the axis of this pivot. The second end is used to block the opening of the crank handle lock hole.

[0024] In a further technical solution, the handle can rotate relative to the rotating member about a predetermined axis.

[0025] Here, the rotating component is configured to have a first axis, and the handle is rotatably connected to the rotating component via a rotating shaft. The rotating shaft has a second axis, and the extension direction of the first axis is perpendicular to the extension direction of the second axis. The handle can either drive the rotating component to rotate around the first axis or rotate around the second axis independently.

[0026] When the crank lock is in the locked state, the handle cannot move relative to the crank lock body, thus preventing the bolt from moving due to accidental touch of the handle; by setting the handle to rotate relative to the rotating part around a predetermined axis, the presence of the crank lock cylinder can avoid restricting the handle from driving the rotating part to rotate.

[0027] In a further technical solution, the connecting rod includes at least two sub-rods, each sub-rod being arranged along the distribution direction of each tension lock; adjacent two sub-rods are detachably connected; and each steering component is disposed on each sub-rod.

[0028] Here, we will take two sub-rods and four steering components as an example. The two sub-rods are detachably connected and parallel in length. The four steering components are divided into two groups, each group including two steering components. A set of steering components is provided on the side of each of the two sub-rods.

[0029] A further technical solution involves threading two adjacent sub-rods together.

[0030] In a further technical solution, each of the steering components is movably connected to the connecting rod via a shoulder screw.

[0031] A further technical solution is that each of the turning parts near each of the tensioning lock cylinders is provided with a locking hole for engaging and fixing the corresponding tensioning lock cylinder.

[0032] Optionally, the end section of the tightening lock cylinder is square, and correspondingly, at least a portion of the cross section of the locking hole is square.

[0033] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0034] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0035] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0036] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0037] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0038] The working principle and advantages of this utility model are as follows:

[0039] During the process of tightening the doors and windows, the handle first drives the rotating component to rotate by a first predetermined angle. The rotating component then causes the adjacent steering components, the connecting rod, the steering components near each tightening lock cylinder, each tightening lock cylinder, and each tightening bolt to move sequentially, so that each tightening bolt fits against the door and window. Afterwards, the handle drives the rotating component to rotate by a second predetermined angle. The rotating component, through each tightening lock cylinder, causes each tightening bolt to gradually contract and tighten, thereby tightening and fixing the doors and windows. Through the above arrangement, each tightening lock is linked with the steering component and the connecting rod, achieving synchronous movement of each tightening bolt. Compared to the traditional method of linkage via gears and racks, this method is simpler in structure, lower in cost, easier to assemble, and reduces the failure rate and maintenance difficulty of the locks. Furthermore, the tightening bolts in each tightening lock can be driven by the handle to synchronously apply pressure to the doors and windows to tighten them, preventing gaps after locking and improving sealing and security. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of the multi-point linkage tensioning and locking crank lock system according to an embodiment of the present utility model;

[0041] Figure 2 This is one of the partial structural diagrams of the multi-point linkage tensioning and locking crank lock system according to an embodiment of the present utility model;

[0042] Figure 3 This is the second partial structural schematic diagram of the multi-point linkage tensioning and locking crank lock system according to an embodiment of this utility model;

[0043] Figure 4 for Figure 1 A structural diagram from another perspective;

[0044] Figure 5 for Figure 1 Another structural diagram from a different perspective;

[0045] Figure 6 A schematic diagram of a multi-point linkage tensioning and locking crank lock system that is in the unlocked state during the locking process;

[0046] Figure 7 A schematic diagram of a multi-point linkage tensioning and locking crank lock system that is in a compressed state during the locking process;

[0047] Figure 8 This is a schematic diagram of a multi-point linkage tightening and locking crank lock system when the crank lock is in the locked state during the locking process.

[0048] Figure 9 This is a schematic diagram of a multi-point linkage tensioning and locking crank lock system when the crank lock is in a fully locked state during the locking process.

[0049] Figure 10 This is a schematic diagram of a multi-point linkage tensioning and locking crank lock system when the crank lock is in a fully locked state during the unlocking process.

[0050] Figure 11 This is a structural diagram of a multi-point linkage tightening and locking crank lock system when the crank lock is in the locked state during the unlocking process.

[0051] Figure 12 A schematic diagram of a multi-point linkage tensioning and locking crank lock system that is in a compressed state during the unlocking process;

[0052] Figure 13 This is a structural diagram of a multi-point linkage tightening and locking crank lock system in the unlocking state during the unlocking process.

[0053] In the attached diagrams: 1. Crank lock; 11. Crank lock body; 12. Rotating component; 13. Handle; 14. Crank lock cylinder; 141. Crank lock hole; 15. Dust cover; 2. Connecting rod; 21. Sub-rod; 3. Steering component; 31. Lock hole; 4. Tightening lock; 41. Tightening lock body; 42. Tightening lock cylinder; 43. Tightening lock tongue; 5. Shoulder screw. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0055] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0056] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0057] See Figures 1-13 A multi-point linkage tensioning and locking crank lock system is used for multi-point linkage tensioning and locking of doors and windows. The multi-point linkage tensioning and locking crank lock system includes a crank lock 1, a connecting rod 2, multiple steering components 3, and multiple tension locks 4; each tension lock 4 is spaced apart along the length extension direction of the connecting rod 2.

[0058] The crank lock 1 includes a crank lock body 11, a rotating component 12, and a handle 13; the rotating component 12 is rotatably disposed on the crank lock body 11 and is movably connected to the connecting rod 2 through one of the steering components 3; the handle 13 is disposed on the rotating component 12;

[0059] Each tension lock 4 includes a tension lock body 41, a tension lock cylinder 42, and a tension lock tongue 43; the tension lock cylinder 42 is located on the tension lock body 41 and is movably connected to the connecting rod 2 through one of the steering components 3; the tension lock tongue 43 is located on the tension lock cylinder 42.

[0060] During the process of pressing down the doors and windows (such as...) Figures 6-9 The handle 13 first drives the rotating part 12 to rotate at a first predetermined angle (e.g., 90 degrees). The rotating part 12 causes the adjacent steering part 3, connecting rod 2, each steering part 3 near each tensioning lock cylinder 42, each tensioning lock cylinder 42, and each tensioning lock tongue 43 to move in sequence, so that each tensioning lock tongue 43 fits against the door and window. Then, the handle 13 drives the rotating part 12 to rotate at a second predetermined angle (e.g., 45 degrees). The rotating part 12 drives each tensioning lock tongue 43 to gradually contract and tighten through each tensioning lock cylinder 42 (the specific method is the same as the process of rotating at the first predetermined angle mentioned above), so as to press and fix the door and window.

[0061] With the above configuration, each tension lock 4 is linked with the connecting rod 2 through the steering component 3, so that each tension lock tongue 43 moves synchronously. Compared with the traditional linkage method through gears and racks, the structure is simple, the cost is reduced, the assembly difficulty is reduced, and the failure rate and maintenance difficulty of the lock are also reduced. In addition, the tension lock tongue 43 in each tension lock 4 can be driven by the handle 13 to apply pressure to the door and window to tighten the door and window, so as to avoid gaps in the door and window after locking, thus improving the airtightness and security.

[0062] The process of releasing the pressure on doors and windows (such as...) Figures 10-13 The process of pressing down on doors and windows is the opposite of the process of turning handle 13 in the opposite direction. The specific process will not be explained here.

[0063] The handle 13 can be rotated in two stages without having to be rotated in two separate stages. For example, with the 90-degree and 45-degree rotations mentioned above, it can be rotated directly to 135 degrees without having to be rotated in two separate stages.

[0064] Taking the rotation of the first predetermined angle as an example, the following is a partial explanation: During the process, the handle 13 drives the rotating component 12, the rotating component 12 drives the adjacent steering component 3 (set as the first steering component 3), the first steering component 3 drives the connecting rod 2, the connecting rod 2 drives all the remaining steering components 3 (set as the second steering components 3), each second steering component 3 drives the corresponding tightening lock cylinder 42, and each tightening lock cylinder 42 drives the corresponding tightening lock tongue 43.

[0065] It should be emphasized that one of the functions of the steering component 3 is to drive the tensioning lock cylinder 42 to rotate, and then the tensioning lock cylinder 42 drives the tensioning lock tongue 43 to rotate at a certain angle to fit or separate from the door and window; in another stage, the tensioning lock cylinder 42 drives the tensioning lock tongue 43 to move along the thickness direction of the door and window to press the door and window or release the pressing operation on the door and window.

[0066] It should also be emphasized that the function of the linkage 2 is to connect two or more independent locking mechanisms. In this application, the linkage 2 connects the crank lock 1 and each tension lock 4, so that these locks are linked together.

[0067] It should be noted that the crank lock 1 and the tension lock 4 are conventional locks, and existing locks of this type can be referenced. The key point of this application is that the crank lock 1 indirectly drives each tension lock 4 to lock and unlock synchronously.

[0068] See Figure 3 In this embodiment, the crank lock 1 further includes a crank lock core 14 disposed on the handle 13 and having a crank lock hole 141; the handle 13 is provided with a dust cover 15 for covering the opening of the crank lock hole 141.

[0069] The crank lock cylinder 14 and crank lock hole 141 are set in the standard configuration and will not be described in detail here.

[0070] When the dust cover 15 blocks the opening of the crank lock hole 141, the crank lock 1 is in a fully locked state.

[0071] Here, the handle 13 is initially positioned against the crank lock body 11. At this time, the crank lock 1 is locked, and the handle 13 cannot move relative to the crank lock body 11. The crank lock 1 can be unlocked by inserting the key into the crank lock hole 141, allowing the handle 13 to move relative to the crank lock body 11. This setting is also a standard setting and will not be described in detail here.

[0072] The dust cover 15 can slide or rotate relative to the crank lock body 11 according to specific needs. During the time when the key is not inserted into the crank lock hole 141, the dust cover 15 blocks the opening of the crank lock hole 141 to prevent dust and other debris from entering the crank lock cylinder 14 through the crank lock hole 141, thus extending the service life of the crank lock 1.

[0073] See Figure 8 , Figure 9 In this embodiment, the dust cover 15 can rotate relative to the handle 13 about a predetermined axis.

[0074] As mentioned above, the dust cover 15 can slide or rotate relative to the crank lock body 11 according to specific needs. In this embodiment, the dust cover 15 is rotated. The implementation of the rotation setting is a conventional setting and will not be described in detail here.

[0075] The dust cover 15 is provided here with a first end and a second end. The first end is rotatably connected to the handle 13 via a pivot. At this time, the predetermined axis is the axis of this pivot. The second end is used to block the opening of the crank handle lock hole 141.

[0076] See Figure 7 , Figure 8In this embodiment, the handle 13 can rotate relative to the rotating member 12 about a predetermined axis.

[0077] Based on the description of the above embodiments, the handle 13 can drive the rotating member 12 to rotate. In this embodiment, the handle 13 can drive the rotating member 12 to rotate, or it can rotate independently.

[0078] The handle 13 can rotate relative to the rotating member 12 around a predetermined axis. The rotation is set to a conventional setting, and the implementation method is not specifically limited here. For ease of understanding, an example is given here: The rotating member 12 is set to have a first axis, and the handle 13 is rotatably connected to the rotating member 12 through a rotating shaft. The rotating shaft has a second axis, and the extension direction of the first axis is perpendicular to the extension direction of the second axis. The handle 13 can either drive the rotating member 12 to rotate around the first axis or rotate around the second axis independently.

[0079] When the crank lock 1 is in the locked state, the handle 13 cannot move relative to the crank lock body 11, thus avoiding the movement of the locking tongue 43 due to accidental contact with the handle 13; by setting the handle 13 to rotate relative to the rotating part 12 around a predetermined axis, the presence of the crank lock cylinder 14 can prevent the handle 13 from driving the rotating part 12 to rotate.

[0080] See Figure 1 In this embodiment, the connecting rod 2 includes at least two sub-rods 21, each sub-rod 21 being arranged along the distribution direction of each tension lock 4; adjacent sub-rods 21 are detachably connected; each steering component 3 is disposed on each sub-rod 21.

[0081] Here, we take two sub-rods 21 and four steering components 3 as an example for explanation. The two sub-rods 21 are detachably connected and parallel in length direction. The four steering components 3 are divided into two groups, each group including two steering components 3. A set of steering components 3 is provided on the side of each of the two sub-rods 21.

[0082] The length of link 2 depends on the number and length of sub-links 21, and the length of link 2 can be flexibly adjusted according to the number and spacing requirements of tension locks 4.

[0083] In this embodiment, two adjacent sub-rods 21 are threaded together.

[0084] As mentioned above, two adjacent sub-rods 21 are detachably connected. However, in this embodiment, two adjacent sub-rods 21 are threadedly connected. The specific threaded connection method will not be described here.

[0085] See Figure 2 In this embodiment, each of the steering components 3 is movably connected to the connecting rod 2 via a shoulder screw 5.

[0086] In the above embodiments, the steering component 3 and the connecting rod 2 are movably connected, and the specific implementation method is not limited. This embodiment, however, further limits the implementation method. The shoulder screw 5 is an existing screw structure, and relevant descriptions can be found in the existing use of shoulder screw 5.

[0087] See Figure 2 In this embodiment, each of the turning members 3 near each of the tensioning lock cylinders 42 is provided with a locking hole 31 for engaging and fixing the corresponding tensioning lock cylinder 42.

[0088] Optionally, the end section of the tightening lock cylinder 42 is square, and correspondingly, at least a portion of the cross section of the locking hole 31 is square.

[0089] The steering component 3 near the tension lock body 41 can be referred to as the steering component 3 in this embodiment.

[0090] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multi-point linkage tensioning and locking crank lock system for multi-point linkage tensioning and locking of doors and windows, characterized in that: The multi-point linkage tensioning and locking crank lock system includes a crank lock (1), a connecting rod (2), multiple steering components (3), and multiple tension locks (4). The crank lock (1) includes a crank lock body (11), a rotating component (12), and a handle (13); the rotating component (12) is rotatably disposed on the crank lock body (11) and is movably connected to the connecting rod (2) through one of the steering components (3); the rotating component (12) can drive the steering component (3) to rotate around a predetermined axis and drive the connecting rod (2) to move; the handle (13) is disposed on the rotating component (12). Each of the tension locks (4) is distributed at intervals along the length extension direction of the connecting rod (2); each tension lock (4) includes a tension lock body (41), a tension lock core (42), and a tension lock tongue (43); the tension lock core (42) is located on the tension lock body (41) and is movably connected to the connecting rod (2) through one of the steering components (3); the tension lock core (42) can rotate about a predetermined axis and move axially along the predetermined axis; the tension lock tongue (43) is located on the tension lock core (42).

2. The multi-point linkage tensioning and locking crank lock system according to claim 1, characterized in that: The multi-point linkage tensioning and locking crank lock system is configured to have an unlocked state, a locked state, and a clamping state. In the unlocked state, each of the tightening latches (43) is separated from the door and window; In the locked state, each of the tightening latches (43) is in contact with the door and window; In the compressed state, each of the tensioning latches (43) is attached to the door and window and applies pressure to the door and window; During the process of switching from the unlocked state to the locked state, the handle (13) drives the rotating part (12) to rotate by a first predetermined angle. The rotating part (12) causes the adjacent turning part (3), the connecting rod (2), the turning part (3) close to each of the tensioning lock cylinders (42), each of the tensioning lock cylinders (42), and each of the tensioning lock tongues (43) to move in sequence so that each of the tensioning lock tongues (43) fits against the door and window. During the process of switching from the locked state to the pressed state, the handle (13) drives the rotating part (12) to rotate a second predetermined angle. The rotating part (12) causes the adjacent turning part (3), the connecting rod (2), the turning part (3) close to each of the tensioning lock cylinders (42), each of the tensioning lock cylinders (42), and each of the tensioning lock tongues (43) to move in sequence, so that each of the tensioning lock tongues (43) moves and tightens along the thickness direction of the door and window, so as to achieve the pressing and fixing of the door and window.

3. The multi-point linkage tensioning and locking crank lock system according to claim 2, characterized in that: The crank lock (1) further includes a crank lock cylinder (14) disposed on the handle (13) and having a crank lock hole (141); the handle (13) is provided with a dust cover (15) for covering the opening of the crank lock hole (141).

4. The multi-point linkage tensioning and locking crank lock system according to claim 3, characterized in that: The dust cover (15) is rotatable about a predetermined axis relative to the handle (13).

5. The multi-point linkage tensioning and locking crank lock system according to any one of claims 1-4, characterized in that: The handle (13) can rotate about a predetermined axis relative to the rotating member (12).

6. The multi-point linkage tensioning and locking crank lock system according to any one of claims 1-4, characterized in that: The connecting rod (2) includes at least two sub-rods (21), each sub-rod (21) being arranged along the distribution direction of each tension lock (4); adjacent two sub-rods (21) are detachably connected; each steering component (3) is disposed on each sub-rod (21).

7. The multi-point linkage tensioning and locking crank lock system according to claim 6, characterized in that: The two adjacent sub-rods (21) are connected by threads.

8. The multi-point linkage tensioning and locking crank lock system according to any one of claims 1-4, characterized in that: Each of the steering components (3) is movably connected to the connecting rod (2) via a shoulder screw (5).

9. The multi-point linkage tensioning and locking crank lock system according to any one of claims 1-4, characterized in that: Each of the steering members (3) near each of the tensioning lock cylinders (42) is provided with a locking hole (31) for engaging and fixing the corresponding tensioning lock cylinder (42).

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