Mechanical connecting rod linkage mechanism

Abstract

The mechanical connecting rod linkage mechanism comprises a rear locking plate, a front locking plate, a connecting rod, a locking pin, a first limiting pin and a second limiting pin. The rear locking plate and the front locking plate are rotationally mounted at the two ends of a moving part respectively; the moving part is in sliding connection with a fixed part; the rear locking plate is connected with the front locking plate through a connecting rod; the connecting rod is rotationally mounted on the moving part; the first limiting pin and the second limiting pin are fixedly mounted on the moving part; the locking pin is fixedly mounted on the fixing piece; the mechanical connecting rod linkage mechanism has two locking states: in the first locking state, the front locking plate and the locking pin are locked, the first limiting pin abuts against the front locking plate, and the second limiting pin does not make contact with the rear locking plate; in the second locking state, the rear locking plate and the locking pin are locked, the first limiting pin abuts against the front locking plate, and the second limiting pin abuts against the rear locking plate. The multi-component linkage mechanism is simple in structure and capable of adapting to a narrow installation space, and multi-component precise linkage is achieved in a limited space.

Description

Technical Field

[0001] This application relates to the field of linkage technology, and in particular to a mechanical linkage mechanism. Background Technology

[0002] In various mechanical devices, linkage mechanisms are often used to lock and unlock components, such as the locking of telescopic drawers and the opening and closing control of industrial equipment doors. Traditional linkage locking mechanisms suffer from problems such as complex structure, inconvenient locking / unlocking operation, low linkage accuracy, and insufficient stability. They are difficult to balance reliable locking effect and easy operation under the requirements of miniaturization and lightweight design, thus limiting their application in scenarios with strict space and performance requirements. Summary of the Invention

[0003] This application proposes a mechanical linkage mechanism, which relates to the field of linkage technology. It can adapt to narrow installation spaces, break through the limitations of traditional parallel / coaxial linkage layouts, achieve precise linkage of multiple components in a limited space, and improve the adaptability of the locking mechanism to complex application scenarios.

[0004] This application provides a mechanical linkage mechanism, including a rear locking plate, a front locking plate, a connecting rod, a locking pin, a first limiting pin, and a second limiting pin. The rear locking plate and the front locking plate are rotatably mounted at both ends of a moving member. The moving member is slidably connected to a fixed member. The rear locking plate and the front locking plate are connected by the connecting rod. The connecting rod is rotatably mounted on the moving member. The first limiting pin and the second limiting pin are both fixedly mounted on the moving member. The locking pin is fixedly mounted on the fixed member. The mechanical linkage mechanism has two locking states: a first locking state, in which the front locking plate is locked with the locking pin, the first limiting pin abuts against the front locking plate, and the second limiting pin does not contact the rear locking plate; and a second locking state, in which the rear locking plate is locked with the locking pin, the first limiting pin abuts against the front locking plate, and the second limiting pin abuts against the rear locking plate.

[0005] Optionally, the rotation center lines of the connecting rod and the moving part, the rotation center lines of the rear locking plate and the moving part, and the rotation center lines of the front locking plate and the moving part are staggered.

[0006] Optionally, the rear locking plate is provided with a first mounting hole, one end of the connecting rod is rotatably mounted in the first mounting hole through a connector, and the connector can slide along the first mounting hole, and the other end of the connecting rod is hinged to the front locking plate.

[0007] Optionally, the front locking plate includes a first latching portion and a first connecting portion; one end of the first latching portion is rotatably connected to the moving member, and the other end has a first slot that cooperates with the locking pin; one end of the first connecting portion is fixedly connected to the end of the first latching portion away from the first slot, and the other end is hinged to the connecting rod; a first limiting groove is formed between the first connecting portion and the first latching portion; the first limiting pin is located in the first limiting groove, and the first limiting pin is located above the first latching portion.

[0008] Optionally, one end of the rear locking plate is rotatably connected to the moving part, and the first mounting hole is opened at one end of the rear locking plate near the connecting rod; a second limiting groove is opened on the upper edge of the rear locking plate, and the second limiting pin is located in the second limiting groove; a second bayonet is opened on the lower edge of the rear locking plate to cooperate with the locking pin.

[0009] Optionally, the second limiting groove is located directly above the connection between the rear locking plate and the moving part; the second limiting groove has a first groove wall, which is inclined in the direction close to the connecting rod.

[0010] Optionally, the first mounting hole is an elongated hole.

[0011] Optionally, the rear locking plate is provided with a second connecting part, which is fixedly connected to the end of the rear locking plate away from the connecting rod.

[0012] Optionally, the rotational mounting position of the rear locking plate and the moving member is lower than the rotational mounting position of the front locking plate and the moving member, and the rotational mounting position of the front locking plate and the moving member is lower than the rotational mounting position of the connecting rod and the moving member.

[0013] Optionally, the locking pin is fixedly mounted on the fastener via a connecting plate.

[0014] This application achieves precise locking and unlocking actions through the coordinated operation of the rear locking plate, front locking plate, connecting rod, locking pin, first limit pin, and second limit pin. By misaligning the rotation center lines of the rear locking plate, front locking plate, connecting rod, and moving parts, the rear locking plate, front locking plate, and connecting rod are spatially staggered, which can adapt to narrow installation spaces. This breaks through the limitations of traditional parallel / coaxial layout of connecting rods, and enables precise linkage of multiple components (front locking plate and rear locking plate) within a limited space, improving the adaptability of the locking mechanism to complex application scenarios. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the mechanical linkage mechanism provided in the embodiment of this application when it is in the first locked state; Figure 2 A schematic diagram of the mechanical linkage mechanism provided in this application when it switches from a first locking state to a second locking state; Figure 3 A schematic diagram of the mechanical linkage mechanism provided in the embodiment of this application when it is in the second locking state; Figure 4 This is a schematic diagram of the mechanical linkage mechanism provided in the embodiment of this application in the second locked state from another perspective.

[0017] Explanation of reference numerals in the attached figures: 1-Rear locking plate, 2-Front locking plate, 3-Connecting rod, 4-Moving part, 5-Fixing part, 6-Locking pin, 7-Connecting part, 8-First limiting pin, 9-Second limiting pin, 10-First limiting groove, 11-Second limiting groove, 12-Second bayonet, 13-First groove wall, 14-Second connecting part, 15-First rotating shaft, 16-Second rotating shaft, 17-Third rotating shaft, 21-First locking part, 22-First connecting part, 23-First bayonet; 101 - First mounting hole. Detailed Implementation

[0018] To better understand the technical solutions in this specification, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0019] It should be understood that the described embodiments are merely some, not all, of the embodiments in this specification. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without inventive effort are within the scope of protection of this specification.

[0020] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this specification. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0021] The technical solutions protected by the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0022] Please see Figures 1-4 This application provides a mechanical linkage mechanism including a rear locking plate 1, a front locking plate 2, a connecting rod 3, a locking pin 6, a first limiting pin 8, and a second limiting pin 9. The rear locking plate 1 and the front locking plate 2 are rotatably mounted at both ends of a movable member 4. The movable member 4 is slidably connected to a fixed member 5, thus enabling the movable member 4 to move along the fixed member 5, forming a telescopic structure. The rear locking plate 1 and the front locking plate 2 are connected by the connecting rod 3. The connecting rod 3 is rotatably mounted on the movable member 4. The rotation of the connecting rod 3 and the movable member 4... The center line, the rotation center line of the rear locking plate 1 and the moving part 4, and the rotation center line of the front locking plate 2 and the moving part 4 are misaligned. The first limiting pin 8 and the second limiting pin 9 are both fixedly installed on the moving part 4. The first limiting pin 8 is used to limit the front locking plate 2, and the second limiting pin 9 is used to limit the rear locking plate 1. The locking pin 6 is fixedly installed on the fixing part 5. In specific implementation, the first limiting pin 8 and the second limiting pin 9 can be fixedly installed on the moving part 4 by welding, and the locking pin 6 is fixed to the fixing part 5 by welding. The mechanical linkage mechanism has two locking states: the first locking state, where the front locking plate 2 is locked with the locking pin 6, the first limiting pin 8 abuts against the front locking plate 2, and the second limiting pin 9 does not contact the rear locking plate 1. Figure 1 As shown; in the second locking state, the rear locking plate 1 is locked to the locking pin 6, the first limiting pin 8 abuts against the front locking plate 2, and the second limiting pin 9 abuts against the rear locking plate 1, as shown. Figures 3-4 As shown, this example uses a mechanical linkage mechanism for locking a drawer-type pedal assembly. In this case, the drawer-type pedal assembly is the moving part 4, and the bottom of the car is the fixed part 5. The drawer-type pedal assembly can retract or extend from the bottom of the car. The rear locking plate 1 is rotatably mounted on the side wall of the drawer-type pedal assembly via the second pivot 16, and the front locking plate 2 is rotatably mounted on the side wall of the drawer-type pedal assembly via the first pivot 15. The rear locking plate 1 is located at the end of the drawer-type pedal assembly furthest from the bottom of the car when it extends from the bottom. The middle part of the connecting rod 3 is rotatably mounted on the side wall of the drawer-type pedal assembly via the third pivot 17. The connecting rod 3 is made of alloy material; to improve the strength of the connecting rod 3, a high-strength alloy is used. As a core transmission component, the connecting rod 3 transmits locking / unlocking power through a unique spatial misalignment design. Its two ends are linked with the front locking plate 2 and the rear locking plate 1 respectively, ensuring the movement trajectory and locking accuracy.

[0023] The rear locking plate 1 has a first mounting hole 101, which is an elongated hole. One end of the connecting rod 3 is rotatably mounted in the first mounting hole 101 through a connector 7, and the connector 7 can slide along the first mounting hole 101. The other end of the connecting rod 3 is hinged to the front locking plate 2. This arrangement allows the connecting rod 3 to rotate when the rear locking plate 1 rotates, thereby causing the front locking plate 2 to rotate.

[0024] Furthermore, the front locking plate 2 includes a first engaging portion 21 and a first connecting portion 22; one end of the first engaging portion 21 is rotatably connected to the moving member 4. Specifically, the first engaging portion 21 can be rotatably mounted on the side wall of the drawer-type pedal assembly via a first rotating shaft 15, and the other end is provided with a first latch 23 that cooperates with the locking pin 6; one end of the first connecting portion 22 is fixedly connected to the end of the first engaging portion 21 away from the first latch 23, and the other end is hinged to the connecting rod 3 by a rivet; a first limiting groove 10 is formed between the first connecting portion 22 and the first engaging portion 21; a first limiting pin 8 is located in the first limiting groove 10, and the first limiting pin 8 is located above the first engaging portion 21. In specific implementation, the first engaging portion 21 and the first connecting portion 22 can be integrally formed.

[0025] One end of the rear locking plate 1 is rotatably connected to the side wall of the drawer-type pedal assembly via the second pivot 16. The first mounting hole 101 is opened at the end of the rear locking plate 1 near the connecting rod 3. A second limiting groove 11 is provided on the upper edge of the rear locking plate 1. The second limiting groove 11 is located directly above the connection between the rear locking plate 1 and the moving part 4. The second limiting pin 9 is located in the second limiting groove 11. A second latch 12 that cooperates with the locking pin 6 is provided on the lower edge of the rear locking plate 1. The second limiting groove 11 has a first groove wall 13 and a second groove wall. The first groove wall 13 is inclined in the direction close to the connecting rod 3. This arrangement can provide space for the rotation of the rear locking plate 1. When the rear locking plate 1 rotates counterclockwise until the first groove wall 13 abuts against the second limiting pin 9, it ensures that the front locking plate 2 is disengaged from the locking pin 6. The second groove wall is positioned opposite to the first groove wall 13. When the second latch 12 of the rear locking plate 1 engages with the locking pin 6, the second groove wall abuts against the second limit pin 9. The rotational mounting position of the rear locking plate 1 and the drawer-type pedal assembly is lower than the rotational mounting position of the front locking plate 2 and the drawer-type pedal assembly. The rotational mounting position of the front locking plate 2 and the moving part 4 is lower than the rotational mounting position of the connecting rod 3 and the drawer-type pedal assembly. That is, the mounting position of the second rotating shaft 16 is lower than the mounting position of the first rotating shaft 15, and the mounting position of the first rotating shaft 15 is lower than the mounting position of the third rotating shaft 17.

[0026] To facilitate the rotation of the rear locking plate 1, a second connecting part 14 is provided on the rear locking plate 1, and the second connecting part 14 is fixedly connected to the end of the rear locking plate 1 away from the connecting rod 3.

[0027] To facilitate the fixing of the locking pin 6, the locking pin 6 can be fixedly installed on the bottom of the car through the connecting plate. To make it easy to see the engagement between the locking pin 6 and the rear locking plate 1 and the front locking plate 2, Figures 1-4The connecting plate is omitted in both cases. To facilitate the installation of the drawer-type pedal assembly at the bottom of the vehicle, two parallel U-shaped beams are often set at the bottom of the vehicle. The drawer-type pedal assembly is slidably installed between the two U-shaped beams. The drawer-type pedal assembly is connected to each U-shaped beam through a slide rail slider structure. The locking pin 6 is fixed to the side of the U-shaped beam away from the side wall of the drawer-type pedal assembly through the connecting plate.

[0028] When the mechanical linkage mechanism is in the first locked state, the drawer-type pedal assembly cannot be retracted to the bottom of the car. When it is necessary to retract the drawer-type pedal assembly to the bottom of the car, pressing the connecting part 14 causes the second connecting part 14 to rotate the rear locking plate 1 counterclockwise. The rear locking plate 1 then causes the connecting rod 3 to rotate clockwise around the third rotating shaft 17. The connecting rod 3 then causes the front locking plate 2 to rotate counterclockwise around the first rotating shaft 15, causing the first latch 23 of the front locking plate 2 to disengage from the locking pin 6. Figure 2 As shown, when the drawer-type pedal assembly is pulled outward, it can be pulled out from the bottom of the car. After being pulled out to the maximum position, the second connecting part 14 is released, and the rear locking plate 1 rotates clockwise under the action of gravity. The second latch 12 of the rear locking plate 1 is engaged with the locking pin 6, and the mechanical linkage mechanism is in the second locking state.

[0029] This application features a linkage coordination design: employing a spatially offset linkage structure, it adapts to narrow installation spaces, breaking through the limitations of traditional parallel / coaxial linkage layouts. This enables precise linkage of multiple components (front locking plate, rear locking plate) within a limited space, improving the adaptability of the locking mechanism to complex application scenarios. It can be integrated into space-constrained equipment (such as precision instruments and small smart home products), expanding the application range of mechanical locking mechanisms and meeting the needs of miniaturization and integration design.

[0030] Multi-component precise limiting: Through the cooperation of limiting pins, locking pins, misalignment linkages, and locking plates, a multi-dimensional limiting system is constructed. When locked, the freedom of movement of each component is restricted, ensuring locking accuracy and stability, and solving the problems of insecure locking and easy loosening caused by gaps in traditional mechanisms. The combination of multi-component collaborative limiting and precise linkage transmission ensures structural stability after locking, effectively resisting vibration and external impact, preventing loosening, ensuring long-term reliable locking of the telescopic mechanism, and improving operational safety.

[0031] Modular assembly structure: Rivets are used for hinges and shafts for installation. Each component is independent yet works together, making the assembly process simple, easy to maintain and replace individual components, reducing later usage costs, and facilitating standardized production and rapid adaptation to different application scenarios.

[0032] Simple structure: The core mechanism consists of only connecting rods, front locking plate, rear locking plate, pivot, limit pin, rivets, etc., which makes the structure simple, low manufacturing cost, economical and practical, and easy to maintain.

[0033] Controllable motion precision: The cooperation between the limit pin and each moving part strictly constrains the locking / unlocking motion trajectory, ensuring the consistency and accuracy of each locking and unlocking action, improving the user experience of the telescopic mechanism, and avoiding malfunctions caused by motion deviation.

[0034] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. A mechanical linkage mechanism, characterized by, It includes rear locking plate (1), front locking plate (2), connecting rod (3), locking pin (6), first limiting pin (8) and second limiting pin (9); The rear locking plate (1) and the front locking plate (2) are rotatably installed at two ends of a moving piece (4) respectively, the moving piece (4) is slidably connected with a fixed piece (5), the rear locking plate (1) and the front locking plate (2) are connected through the connecting rod (3), the first limiting pin (8) and the second limiting pin (9) are fixedly installed on the moving piece (4), the locking pin (6) is fixedly installed on the fixed piece (5), the mechanical connecting rod linkage mechanism has two locking states: in the first locking state, the front locking plate (2) is locked with the locking pin (6), the first limiting pin (8) abuts against the front locking plate (2), and the second limiting pin (9) is not in contact with the rear locking plate (1); In the second locking state, the rear locking plate (1) is locked with the locking pin (6), the first limiting pin (8) abuts against the front locking plate (2), and the second limiting pin (9) abuts against the rear locking plate (1).

2. The mechanical linkage of claim 1, wherein, The connecting rod (3) is rotatably installed on the moving piece (4), and the rotating center lines of the connecting rod (3) and the moving piece (4), the rotating center lines of the rear locking plate (1) and the moving piece (4), and the rotating center lines of the front locking plate (2) and the moving piece (4) are arranged in a staggered mode.

3. The mechanical linkage of claim 2, wherein, A first mounting hole (101) is arranged on the rear locking plate (1), one end of the connecting rod (3) is rotatably installed in the first mounting hole (101) through a connecting piece (7), the connecting piece (7) can slide along the first mounting hole (101), and the other end of the connecting rod (3) is hingedly connected with the front locking plate (2).

4. The mechanical linkage of claim 3, wherein, The front locking plate (2) comprises a first clamping portion (21) and a first connecting portion (22), one end of the first clamping portion (21) is rotatably connected with the moving piece (4), the other end is provided with a first clamping hole (23) matched with the locking pin (6), one end of the first connecting portion (22) is fixedly connected with the other end of the first clamping portion (21) away from the first clamping hole (23), and the other end is hingedly connected with the connecting rod (3); a first limiting groove (10) is formed between the first connecting portion (22) and the first clamping portion (21), the first limiting pin (8) is located in the first limiting groove (10), and the first limiting pin (8) is located above the first clamping portion (21).

5. The mechanical linkage of claim 3, wherein, One end of the rear locking plate (1) is rotatably connected with the moving piece (4), the first mounting hole (101) is arranged at one end of the rear locking plate (1) close to the connecting rod (3), a second limiting groove (11) is arranged on the upper edge of the rear locking plate (1), the second limiting pin (9) is located in the second limiting groove (11), and a second clamping hole (12) matched with the locking pin (6) is arranged on the lower edge of the rear locking plate (1).

6. The mechanical linkage of claim 5, wherein, The second limiting groove (11) is located directly above the connecting position of the rear locking plate (1) and the moving part (4); the second limiting groove (11) has a first groove wall (13), and the first groove wall (13) is arranged in an inclined manner along the direction close to the connecting rod (3).

7. The mechanical linkage of claim 5, wherein, The first mounting hole (101) is a long hole.

8. The mechanical linkage of claim 5, wherein, The rear locking plate (1) is provided with a second connecting part (14), and the second connecting part (14) is fixedly connected to one end of the rear locking plate (1) away from the connecting rod (3).

9. The mechanical linkage of claim 2, wherein, The rotating mounting position of the rear locking plate (1) and the moving part (4) is lower than the rotating mounting position of the front locking plate (2) and the moving part (4), and the rotating mounting position of the front locking plate (2) and the moving part (4) is lower than the rotating mounting position of the connecting rod (3) and the moving part (4).

10. The mechanical linkage of claim 1, wherein, The locking pin (6) is fixedly installed on the fixed part (5) through a connecting plate.

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