A pull-type locking device with up-down linkage locking

Abstract

A kind of up and down linkage locking lever-locked lock and equipment, lever-locked lock includes two lockers II distributed in up and down direction, two ear piece supports, two locking blocks, locking block is hinged on corresponding ear piece support and has locking state with corresponding locker II, unlocking state with corresponding locker is disconnected, the two ends of connecting rod are respectively hinged with corresponding side locking block, one locking block is connected with spanner and there is gap between spanner and connecting rod in locking state, the ear piece support of another locking block is provided with limiting locking mechanism for restricting the end of spanner to make the lever-locked lock keep in locking state.The lever-locked lock is installed on the front panel of cabinet after being connected with the upper / lower side shelf in equipment mounting frame, to avoid the phenomenon that cabinet produces low head tendency and cabinet top vibration is more serious;Significantly reduce the size of concentrated force at the connection of front panel;Adopt double rocker mechanism to realize linkage locking.

Description

Technical Field

[0001] This invention belongs to the field of electrical equipment technology, specifically relating to a lever-type locking device suitable for upper and lower linkage locking of equipment mounting brackets, and equipment using the lever-type locking device. Background Technology

[0002] Typical equipment mounting racks in the prior art, such as Figure 1 , Figure 2 , Figure 3 As shown, the system includes two guide rails 10 symmetrically distributed in the left-right direction and a connector mounting plate 20 located behind the guide rails. The front and rear ends of the guide rails are connected to the corresponding shelves 30 on the same layer. The upper and lower ends of the connector mounting plate are connected to the rear shelves 30 on the adjacent layer, and the connector mounting plate is equipped with connectors 40. The chassis 50 is inserted into the equipment mounting rack in the front-back direction. After the adapter connector 501 on the rear panel of the chassis and the connector 40 are inserted into place, the chassis is locked in place using a locking device 60. In the ARINC 600 equipment mounting rack, since the connector itself no longer has an independent locking function, its insertion process and final mating state depend entirely on the components of the equipment (i.e., the "rear-mounted system") (including the chassis, equipment mounting rack, and locking device), with the locking device being a major factor.

[0003] Due to their excellent insertion / removal assist function and ability to also function as a handle for handling, Class B locking devices based on the lever-operated mechanism are widely used. Typical application scenarios include... Figure 1 As shown. For details, please refer to [link / reference]. Figure 4 The Class B locking device includes a locking handle 601 mounted on the front panel of the chassis and a locking device I 602 mounted on the lower side shelf.

[0004] In operation, the chassis is secured via a Class B locking device on the front panel and an adapter connector on the rear panel. When fully secured, the Class B locking device, consisting of a locking handle and locking mechanism I, connects to the lower shelf, and the connector mounting plate carrying the connector connects to both the upper and lower shelves. Figure 5 It can be seen that the force transmission path of the Class B locking device, which is only connected to the lower shelf, is significantly different from that of the connector mounting plate located at the rear and connected to both the upper and lower shelves. This structural form will lead to the following problems:

[0005] (1) For the equipment mounting frame, the connection stiffness of the front and rear side shelves on the upper layer is inconsistent, which manifests as inconsistent deformation and inconsistent frequency response.

[0006] (2) For the equipment chassis, since the front end is only locked on the bottom side, the chassis is prone to "head-down" tendency, which will result in the top mating length of the connector being shorter than the bottom mating length, affecting the mating quality (and in severe cases, it may cause problems such as poor transmission). On the other hand, since the front end is only connected to the shelf on the bottom side, the vibration amplification of the top of the chassis is more severe, which will have an adverse effect on the structural durability and reliability of internal components under vibration and other working conditions.

[0007] (3) As the functional density of equipment increases, the number of connector contact cores selected for newly developed equipment tends to increase, which increases the insertion and extraction force of the connector. In order to ensure reliable mating of the connector, the locking device generally needs to provide a large holding force to the chassis to limit its movement and swing. Since the locking position is only located at the bottom of the chassis, the force concentrated in the connection area at this location is large, which has a negative impact on the structural durability and lightweighting of the front panel of the chassis. Summary of the Invention

[0008] To address the aforementioned technical problems, the present invention aims to provide a novel locking device that is installed on the front panel of the chassis and simultaneously connects the upper and lower shelves of the mounting bracket. This locking device continues the operating habits of existing Class B locking devices, and still uses a lever-type actuation mechanism to simultaneously lock and unlock the upper and lower parts of the chassis at one time (i.e., "linkage locking").

[0009] The objective of this invention is achieved through the following technical solution: a lever-type locking device with vertical linkage, comprising two locking devices II 701 symmetrically distributed in the vertical direction and used for connection to corresponding shelves in the equipment mounting bracket; two lug supports 702 distributed in the vertical direction and used for connection to the front panel of the chassis 50; and two locking blocks 703 distributed in the vertical direction and respectively hinged to the corresponding lug supports. Each locking block has a locked state connected to the corresponding locking device II and an unlocked state disconnected from the corresponding locking device II. The upper and lower ends of a connecting rod 704 are respectively hinged to the corresponding locking blocks. One locking block is connected to a wrench 705, and in the locked state, there is a gap 706 between the wrench and the connecting rod for holding the wrench for operation. A limiting locking mechanism 707 is provided on the lug support where the other locking block is mounted to constrain the end of the wrench and keep the locking device in the locked state.

[0010] By employing the aforementioned technical solution, the lever-type locking device with up-and-down linkage locking according to the present invention can achieve the following beneficial effects:

[0011] (1) When the lever-type locking device is installed on the front panel of the chassis, it can simultaneously connect the upper and lower shelves on the front side of the equipment mounting frame, thus solving the problem of inconsistent connection stiffness, deformation and frequency response of the front and rear shelves on the upper layer of the equipment mounting frame caused by the existing locking device only connecting the lower shelf.

[0012] (2) The two locking blocks in the lever-type locking device lock simultaneously with the locking device II on the upper shelf and the locking device II on the lower shelf, which not only prevents the chassis from "heading down" and makes the top insertion length of the connector consistent with the bottom insertion length, ensuring the insertion quality, but also avoids the phenomenon of severe vibration at the top of the chassis, ensuring the durability of the chassis structure and the reliability of the internal components of the chassis under working conditions.

[0013] (3) When the lever-type locking device is in the locked state, the upper and lower sides of the front panel of the chassis are connected to the corresponding shelves, which significantly reduces the magnitude of the concentrated force at the connection of the front panel and ensures the structural durability and lightweight performance of the front panel of the chassis.

[0014] (4) The lever-type locking device still inherits the core principle of the Class B locking device - the lever-type lever mechanism. During the insertion and removal of the chassis, the operation is still carried out through the lever-type labor-saving mechanism, retaining the advantages of tool-free, assisted insertion and removal, and quick locking / disconnection.

[0015] (5) The lever-type locking device still inherits some of the installation interfaces of the Class B locking device, such as the locking device, a locking block and the wrench, so that the locking device proposed in this embodiment can still meet the need for continuity of operating habits, and the wrench can still be used as a handling handle when the chassis is not inserted into the equipment mounting bracket.

[0016] (6) The lever-type locking device forms a double rocker mechanism with the front panel of the chassis, two locking blocks, and connecting rod. The wrench acts as the active operating lever of the double rocker mechanism. During the chassis insertion and removal process, the two locking blocks on the upper and lower sides are locked and unlocked synchronously (i.e., linked locking) through the connecting rod. This not only ensures the synchronization of the insertion and removal process and meets the requirements of parallel insertion and removal of the chassis and connector, but also ensures that the insertion and removal strokes at the upper and lower positions are coordinated and consistent, so that the connector can be inserted and removed horizontally, and optimizes the insertion quality of various contact parts.

[0017] Furthermore, the locker II includes a locker housing 7011, a fork-shaped member 7012, and a locking pin 7013. The locker housing has a mating surface on the side near the corresponding chassis for connecting with the corresponding shelf. The fork-shaped member is located on the front side of the locker housing. The locking pin 7013 is inserted into the two ear plates of the fork-shaped member in the left-right direction and is used to hook and connect with the hook of the corresponding locking block to achieve a locked state, and to disconnect from the hook of the corresponding locking block to achieve an unlocked state.

[0018] Furthermore, an adjusting baffle 7014 is slidably provided on the rear side inside the locking device housing 7011. A guide rod 7015 extending in the front-rear direction is connected to the adjusting baffle, and the front end of the guide rod, which passes through the locking device housing, is connected to the fork-shaped member 7012. A first elastic member in a compressed state is provided between the adjusting baffle and the inner wall of the front side of the locking device housing. In the working state, the locking device housing is connected to the upper / lower side frame through the mating surface. The first elastic member in a compressed state provides an elastic force to pull the guide rod backward, thereby causing the locking pin on the fork-shaped member to tend to move backward. Since the locking pin in the locked state is hooked to the hook of the corresponding locking block, the locking device can apply an elastic holding force to the equipment chassis.

[0019] Furthermore, the rear end of the guide rod is threadedly connected to the adjusting baffle. The initial compression of the first elastic element can be controlled by turning the adjusting baffle or the guide rod as needed, thereby adjusting the magnitude of the elastic holding force applied by the locking device to the equipment chassis.

[0020] Furthermore, the adjusting baffle includes a columnar body extending in the front-back direction and a disc-shaped body disposed at the rear end of the columnar body and extending in a plane perpendicular to the front-back direction. The columnar body and the rear end of the guide rod are threaded together.

[0021] Furthermore, the front end of the guide rod is provided with a force-applying structure for rotating the guide rod to adjust the initial compression of the first elastic element.

[0022] Furthermore, an outwardly convex boss 70151 is provided at the front end of the guide rod that extends out of the lock housing. When the guide rod is subjected to a backward pulling force, the locking pin on the fork-shaped part tends to move backward due to the blocking cooperation between the outwardly convex boss and the front wall of the bridging part.

[0023] Furthermore, the fork-shaped component 7012 is provided with a locating pin 7017 extending in the front-rear direction. A stop block 70171, which passes through the locking housing, is provided at the rear end of the locating pin to engage with the locking housing during the locking process, thereby limiting the guide rod's forward movement to its extreme position. During the locking process, the wrench drives the locking pin on the fork-shaped component to move forward from its initial state, and the guide rod moves forward synchronously. Through the stop block and the locking housing's engagement, the extreme position of the guide rod being pulled horizontally can be constrained, not only enabling smooth insertion and removal of the chassis on the equipment mounting bracket but also preventing excessive compression of the first elastic element.

[0024] Furthermore, the first elastic element is a spring 7016, and the guide rod is inserted inside the spring, which is a simple structure.

[0025] Furthermore, the portion of the connecting rod near one of the locking blocks is offset away from the front panel of the chassis to form a bend 7042, which increases the gap between the connecting rod and the gripping part of the wrench.

[0026] Furthermore, the end of the connecting rod 704 is configured as a fork structure 7043, which enables a stable connection between the end of the connecting rod and a locking block connected to a wrench. Simultaneously, the bent portion 7042 is close to the fork structure 7043, facilitating operator operation.

[0027] Furthermore, a groove 502 is provided on the front panel of the chassis to accommodate a portion of the connecting rod near the bending part. This ensures that the clearance meets the aforementioned requirements, while avoiding the phenomenon that the locking device protrudes too much from the front panel of the device due to ensuring the "clearance between the connecting rod and the wrench" and the phenomenon that the fork-shaped arm of the locking device II is too long.

[0028] Furthermore, the limiting locking mechanism includes a mechanism body 7071 rotatably mounted on the lug support, a locking hook 7073 provided on the front side of the mechanism body for forming a stop engagement with the end of the wrench, a driving part 7074 protruding from the lug support for driving the mechanism body to rotate to release the stop engagement between the locking hook and the end of the wrench, and a second elastic member provided between the mechanism body and the lug support for maintaining the stop engagement between the locking hook and the end of the wrench. When the hook of the locking block is engaged with the locking pin of the locking device II to achieve the locked state, the wrench is closed upwards until the end of the wrench forms a stop engagement with the locking hook. At this time, the lever-type locking device is in working condition. The elastic force provided by the second elastic element keeps the locking hook and the end of the wrench in a stop engagement, thereby avoiding locking failure and mis-locking under working conditions. When it is necessary to release the locked state, the fingers are inserted into the gap between the wrench and the connecting rod and the operating part of the wrench is grasped. Then, the index finger hooks the driving part protruding from the upper locking block and drives the main body of the mechanism to rotate counterclockwise (the second elastic element is compressed, storing elastic force for the reset of the main body of the mechanism), so that the locking hook is moved away from the front side of the end of the wrench (that is, the two are released from the stop engagement). At this time, the wrench can be driven to rotate clockwise. Under the action of the double rocker mechanism, the hooks of the two locking blocks are released from the locking pin of the corresponding locking device II, and the machine box can be pulled out from the equipment mounting bracket.

[0029] Furthermore, the main body of the mechanism 7071 is provided with a forward-extending cantilever beam 70731, the front end of which is bent to form a locking hook portion 7073. The gap between the locking hook portion and the main body of the mechanism is used to place the end of the wrench in the locked state.

[0030] Furthermore, the drive unit 7074 is configured in the shape of a trigger, which is ergonomic and facilitates finger hooking operation.

[0031] Furthermore, the main body of the mechanism is rotatably mounted on the lug support via a third pin 7072. The second elastic element is a torsion spring 7075. The first lever arm 70751 of the torsion spring, mounted on the third pin, is connected to the limiting step 7032 provided on the lug support, and its second lever arm 70752 is connected to the main body of the mechanism located on one side of the limiting step. The torsion spring provides the reset torque of the main body of the mechanism and an additional locking torque in the locked state.

[0032] Furthermore, an anti-rotation structure is provided between the third pin and the corresponding mounting hole on the ear plate support to prevent the third pin from rotating relative to the corresponding mounting hole on the ear plate support during the operation of the lever-type locking device, thereby increasing the gap of the mounting hole and causing the lever-type locking device to wobble unexpectedly.

[0033] Furthermore, torsion spring mounting slots 70711, adapted to the torsion springs in their natural state, are provided on the two side walls of the main body of the mechanism along the left and right directions. The ends of the second lever arms of the two torsion springs are connected by bridging lever arms 70753 extending along the left and right directions. The two torsion spring mounting slots can improve the assembly efficiency of the torsion springs, and the two torsion springs can ensure the stability of the main body of the mechanism during rotation.

[0034] Furthermore, the main body of the mechanism is provided with a cap 70712 on the side of the limiting step away from the locking hook. The end of the first lever arm 70751 abuts against the limiting step, and the end of the second lever arm 70752 and the bridging lever arm 70753 abut against the cap.

[0035] Furthermore, the anti-slip structure on the drive unit and the grip of the wrench can improve the operational efficiency of the limit locking mechanism.

[0036] Furthermore, a wrench 705 is connected to the locking block located on the lower side, and a limiting locking mechanism 707 is provided on the ear support located on the upper side. This arrangement is more in line with existing operating habits.

[0037] The locking block is hinged to the corresponding lug support via the first pin 7031, and the end of the connecting rod is hinged to the corresponding locking block via the second pin 7041. Anti-rotation structures are provided between the first pin and the corresponding mounting hole on the lug support, and between the second pin and the corresponding mounting hole on the locking block, to prevent the first pin and the second pin from rotating relative to the corresponding mounting holes on the lug support and the locking block during the operation of the lever-type locking device, thereby increasing the gap of the mounting holes and causing the lever-type locking device to wobble unexpectedly.

[0038] Furthermore, the transmission angle of the wrench is not less than 60°, thereby ensuring that the lever-type locking device has good force transmission performance.

[0039] The present invention also achieves its objective through the following technical solution: A device includes a device mounting frame and a chassis. The device mounting frame includes several shelves 30 extending in the left-right direction. The front and rear ends of two guide rails 10, which are symmetrically distributed in the left-right direction, are respectively connected to the shelves on the corresponding side of the same layer. The upper and lower ends of a connector mounting plate 20 located on the rear side of the two guide rails are respectively connected to the shelf on the rear side of the adjacent layer. The device also includes the aforementioned lever-type locking device with up-down linkage. Two locking devices II 701, which are symmetrically distributed in the up-down direction, are respectively disposed on the front shelf of the adjacent layer. Two locking blocks 703, which are distributed in the up-down direction, are disposed on the front panel of the chassis. The two locking blocks are respectively connected to the corresponding locking devices II to lock the chassis on the device mounting frame. The two locking blocks are respectively disconnected from the corresponding locking devices II to allow the chassis and the device mounting frame to separate.

[0040] Furthermore, both the connector 40 on the connector mounting plate and the adapter connector 501 on the rear panel of the chassis are floating blind-mating connectors. The connector mounting plate is provided with a positioning pin 80 and a flange end face 801 extending in a plane perpendicular to the front-back direction on the rear side of the positioning pin. When the chassis is inserted into the box, the positioning pin is inserted into the pin hole on the rear side of the chassis to achieve a tight fit. The outer wall surface of the positioning pin extending in the front-back direction is used to limit the vertical and horizontal directions when the chassis is inserted. The flange end face abuts against the rear panel of the chassis to limit the chassis in the mating direction, thereby avoiding the pin collision phenomenon caused by the contact being inserted too deeply.

[0041] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a rear-mounted system using a Class B locking device.

[0043] Figure 2 yes Figure 1 A schematic diagram of the equipment.

[0044] Figure 3 yes Figure 1 A typical structural diagram of a Chinese equipment mounting rack.

[0045] Figure 4 middle Figure 1 Diagram showing the usage status of Class B locking devices.

[0046] Figure 5 yes Figure 1 A diagram showing the differences in the front and rear connection methods of the mid-chassis.

[0047] Figure 6 This is an exploded schematic diagram of a first embodiment of a lever-type locking device for upper and lower linkage locking according to the present invention.

[0048] Figure 7 This is a schematic diagram of the mechanism of a lever-type locking device with upper and lower linkage locking according to the present invention.

[0049] Figures 8 to 11 This is a schematic diagram of the synchronous unlocking process of the lever-type locking device in Embodiment 1.

[0050] Figure 12 This is a schematic diagram of the locking block located on the lower side and the locking device II in a locked state in Embodiment 1.

[0051] Figure 13 This is a schematic diagram of the locking block located on the lower side in Embodiment 1 being unlocked by a wrench.

[0052] Figure 14 This is a schematic diagram showing the wrench reaching its limit position when the locking block located on the lower side is unlocked in Embodiment 1.

[0053] Figure 15 This is a schematic diagram of mounting a single lever-type locking device as described in Embodiment 1 on the chassis.

[0054] Figure 16 This is a schematic diagram of two lever-type locking devices as described in Embodiment 1 mounted on the chassis.

[0055] Figure 17 This is a schematic diagram of the locker II in Embodiment 1.

[0056] Figure 18 This is a schematic diagram of the locker II (partial locker housing is hidden) in Embodiment 1.

[0057] Figure 19 yes Figure 18 Sectional view of AA.

[0058] Figure 20 This is a schematic diagram of the shape of the connecting rod in Embodiment 1.

[0059] Figure 21 This is a schematic diagram of an operator holding a lever-type locking device.

[0060] Figure 22 yes Figure 21 Enlarged schematic diagram of point I in the middle.

[0061] Figure 23 This is a diagram showing a groove set on the front panel of the chassis.

[0062] Figure 24 This is an isometric schematic diagram of the lever-type locking device in Embodiment 1.

[0063] Figure 25 yes Figure 24 Enlarged schematic diagram of section II.

[0064] Figure 26 This is a schematic diagram of the limiting and locking mechanism in Embodiment 1.

[0065] Figure 27 This is a schematic diagram of the torsion spring in the limit locking mechanism.

[0066] Figure 28 This is a schematic diagram of a blind-insertion installation system using a lever-type locking device.

[0067] Figure 29 yes Figure 28 A diagram with the chassis hidden. Detailed Implementation

[0068] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0069] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0070] Furthermore, the terms "first or I," "second or II," "third or III," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first or I," "second or II," or "third or III" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0071] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0072] Example 1

[0073] Please see Figure 6 This is an embodiment of a lever-type locking device with vertical linkage locking according to the present invention. Specifically, this embodiment includes two locking devices II 701 symmetrically distributed in the vertical direction, and two lug supports 702 distributed in the vertical direction. The upper locking device II is used to connect to the upper shelf 30 of the equipment mounting bracket, and the lower locking device II is used to connect to the lower shelf 30 of the equipment mounting bracket. The two lug supports are used to connect to the upper and lower sides of the front panel of the chassis, respectively. This embodiment also includes two locking blocks 703 distributed in the vertical direction. The upper locking block is hinged to the upper lug support via a first pin 7031, and the lower locking block is also hinged to the lower lug support via a first pin 7031. On the plate support, the locking block has a locked state connected to the corresponding locking device II and an unlocked state disconnected from the corresponding locking device; this embodiment also includes a connecting rod 704, the upper end of which is hinged to the upper locking block via a second pin 7041, and the lower end of which is also hinged to the lower locking block via a second pin 7041. The lower locking block is connected to a wrench 705 for easy application of force, and in the locked state, there is a gap 706 between the wrench and the connecting rod for holding the wrench to perform operations (including locking operation, unlocking operation, and handling operation in the non-insertion state).

[0074] The working condition of the lever-type locking device is as follows: two locking devices II are symmetrically assembled on the upper and lower shelves on the front side of the equipment mounting frame; two lug supports are respectively assembled on the upper and lower sides of the front panel of the chassis; two locking blocks are respectively hinged to the corresponding lug supports, and a connecting rod is hinged between the two locking blocks. At this time, the front panel of the chassis, the two locking blocks, and the connecting rod actually constitute a double rocker mechanism, and the wrench connected to the lower locking block in this double rocker mechanism serves as the active operating lever of the mechanism. The aforementioned lever-type locking device proposed in this embodiment is still based on the lever-type lever principle. For ease of understanding, it can be simplified into a triple-overlapping planar mechanism with a four-bar linkage as the main component and two upper and lower slider composite hinges, such as... Figure 7 As shown.

[0075] The working process of the lever-type locking device is as follows: When the chassis is inserted into the mounting bracket and locked in place, the two locking blocks connect with the corresponding locking devices II to achieve locking. Figure 8 As shown; when the chassis needs to be removed from the mounting bracket, the wrench 705 connected to the lower locking block is driven clockwise, causing the lower locking block to rotate clockwise and tending to separate from the lower locking device II. At the same time, through the linkage of the connecting rod 704, the upper locking block is driven to rotate counterclockwise, tending to separate from the upper locking device II. Figure 9 As shown, with the increase of the wrench rotation angle (such as...) Figure 10 , Figure 11 As shown in the diagram, both locking blocks simultaneously disconnect from their respective locking devices II, achieving synchronous unlocking. At this point, the chassis can be removed from the equipment mounting rack. When the chassis needs to be inserted into the mounting rack, the reverse process is executed, which ensures that after the chassis is inserted into the mounting rack, both locking blocks simultaneously connect to their respective locking devices II, achieving synchronous locking.

[0076] With the aforementioned design, this embodiment of a lever-type locking device with upper and lower linkage, when installed on the front panel of the chassis, can simultaneously connect the upper and lower shelves on the front side of the equipment mounting rack. Since the connector mounting plate simultaneously connects the upper and lower shelves on the rear side of the equipment mounting rack, this solves the problem of inconsistent connection stiffness, deformation, and frequency response between the front and rear shelves on the upper layer of the equipment mounting rack, which is caused by existing locking devices only connecting the lower shelf. The two locking blocks in the lever-type locking device are respectively connected to the locking device II on the upper shelf. Locking device II on the lower shelf simultaneously locks the chassis, preventing it from tilting downwards and ensuring that the top and bottom mating lengths of the connectors are consistent to guarantee mating quality. It also prevents severe vibration at the top of the chassis, ensuring the durability of the chassis structure and the reliability of the internal components under operating conditions. When the lever-type locking device is in the locked state, both the upper and lower sides of the front panel of the chassis are connected to the corresponding shelves, significantly reducing the concentrated force at the front panel connection and ensuring the structural durability and lightweight performance of the front panel. Furthermore, the lever-type locking device still inherits the core principle of the Class B locking device—the lever-type lever mechanism. During the insertion and removal of the chassis, the operation is still carried out through the lever-type labor-saving mechanism, retaining the advantages of tool-free operation, assisted insertion and removal, and quick locking / unlocking. It also inherits some installation interfaces of the Class B locking device, such as the locking device, the lower locking block, and the wrench, so that the locking device proposed in this embodiment can still meet the need for continuity of operating habits. Moreover, when the chassis is not inserted into the equipment mounting rack, the wrench can still be used as a handling handle. Through structural improvements, the front panel of the chassis, the two locking blocks, and the connecting rod form a double rocker mechanism. The wrench acts as the active operating lever of this double rocker mechanism. During the insertion and removal of the chassis, the connecting rod realizes the synchronous locking and unlocking of the upper and lower locking blocks (i.e., linkage locking), ensuring the synchronicity of the insertion and removal process and meeting the requirements for parallel insertion and removal of the chassis and connectors.

[0077] In this embodiment, the main structure of the lever-type locking device with up-and-down linkage locking is a double rocker mechanism (i.e., a four-bar mechanism), in which the wrench 705 acts as the active operating lever, and its transmission angle (i.e., ...) is... Figure 8 The length direction of the wrench shown is in the same direction as Figure 11 The angle formed by the length direction of the wrench shown is not less than 60°, thereby ensuring that the lever-type locking device has good force transmission performance.

[0078] The main structure of the lever-type locking device with up-and-down linkage locking in this embodiment is a double rocker mechanism. The movement limit prevents the double rocker mechanism from reaching its dead center position. Specifically: Please refer to... Figure 12In the locked state, the lower locking block 703 connects to the corresponding locking device II 701 to achieve locking. During unlocking, the lower locking block 703 rotates clockwise around the first pin 7031 under the action of the wrench 705. During this rotation, the locking pin 7013 of the locking device II moves backward from the initial position V0 to a new position V1. The distance between the initial position V0 and the new position V1 is the effective pull-out stroke L1 of the device. However, the hook of the locking block still interferes with the locking pin of the locking device II in the front-back direction. Figure 13 As shown; when the wrench is rotated clockwise to its limit position (i.e., the hook of the locking block moves away from the first wall surface 7032 of the first pin and abuts against the lower ear seat), as... Figure 14 As shown, the hook of the locking block is located on the upper side of the first pin (that is, the second wall surface 7033 of the hook near the first pin is at a distance L2 in the vertical direction from the first pin), that is, the hook of the locking block will not interfere with the locking pin of the locking device II in the front-back direction, and the chassis 50 can be pulled out smoothly at this time.

[0079] Depending on the width of the equipment, the lever-type locking device with up-and-down linkage locking in this embodiment can be used individually or in pairs. For example... Figure 15 As shown, when the width of the chassis 50 is small, a single lever-type locking device can be used to secure the chassis to the equipment mounting bracket. For example... Figure 16 As shown, when the width of the chassis 50 is large, it is recommended to use two lever-type locking devices to fix the chassis to the equipment mounting bracket. On the one hand, this can further reduce the concentrated force applied to the locking device lug support. On the other hand, the interaction between the two locking devices can further reduce the lateral (i.e., left-right) sway of the equipment chassis. In addition, when using two lever-type locking devices, the distance between the two locking devices should be as large as possible, and they should be arranged symmetrically about the center plane in the width direction of the equipment to avoid excessive force on one locking device.

[0080] Please see Figure 17 In this embodiment, the locking device II 701 includes a locking device housing 7011, a fork-shaped component 7012, and a locking pin 7013. The locking device housing has a mating surface on the side near the corresponding chassis, which is used to connect with the corresponding upper / lower side shelf 30. The mating surface is provided with a connecting hole 70111, which is used to install corresponding fasteners (e.g., bolts) to fix the locking device housing onto the corresponding shelf, thereby achieving locking of the chassis that is inserted into the equipment mounting rack. Specifically, in this embodiment, the locking device housing includes a cylindrical base body. The front of the base body is provided with a platform, which is formed by extending from the front of the base body towards the chassis. The mating surface is formed by the top or bottom surface of the platform near the chassis, and the connecting hole is provided on the platform.

[0081] The fork-shaped member 7012 is disposed on the front side of the lock housing 7011. It includes two ear plates symmetrically distributed in the left-right direction and a bridging part 70122 connecting the two ear plates 70121. The locking pin 7013 is inserted into the two ear plates in the left-right direction. The locking pin can be hooked and connected with the hook of the corresponding locking block to achieve the locking state, and can also be disconnected from the hook of the corresponding locking block to achieve the unlocking state.

[0082] For further details, please refer to Figure 18 and Figure 19 An adjusting baffle 7014 is slidably provided on the rear side inside the locking device housing 7011. A guide rod 7015 extending in the front-rear direction is threadedly connected to the adjusting baffle, and the front end of the guide rod passing through the locking device housing is connected to the fork-shaped part 7012. A compressed spring 7016 is provided between the adjusting baffle and the inner wall of the front side of the locking device housing, and the guide rod 7015 is inserted inside the spring 7016. In the working state, the locking device housing is connected to the upper / lower side frame through the mating surface. The compressed spring provides an elastic force to pull the guide rod backward, thereby causing the locking pin on the fork-shaped part to tend to move backward. Since the locking pin in the locked state is hooked to the hook of the corresponding locking block, the locking device can apply an elastic holding force to the equipment chassis to achieve dimensional compensation for equipment installation tolerances. At the same time, since the rear end of the guide rod is threadedly connected to the adjusting baffle, the initial compression of the spring can be controlled by turning the adjusting baffle or the guide rod as needed, thereby adjusting the magnitude of the elastic holding force applied by the locking device to the equipment chassis. Specifically, the front end of the guide rod extending out of the locking device housing is provided with an outward-facing boss 70151. When the guide rod is subjected to a backward pulling force, the locking pin on the fork-shaped part tends to move backward due to the blocking action between the outward-facing boss and the front wall of the bridging part. In addition, the front end of the guide rod is provided with a force-applying structure for rotating the guide rod to adjust the initial compression of the spring. The force-applying structure can be a force-applying groove, such as a slotted groove or a cross groove, on the end face of the front end of the guide rod, or the outer edge of the outward-facing boss can be set to a polygonal shape, such as a hexagonal shape. Furthermore, the adjusting baffle adopts a T-shaped structure, including a columnar body extending in the front-back direction and a disc-shaped body provided at the rear end of the columnar body and extending in a plane perpendicular to the front-back direction. The columnar body is provided with an internal thread, and the rear end of the guide rod is provided with an external thread that matches the aforementioned internal thread. Alternatively, the external thread can be provided on the columnar body, and the rear end of the guide rod can be provided with an internal thread that matches the aforementioned external thread, thereby realizing the threaded connection between the rear end of the guide rod and the adjusting baffle.

[0083] Furthermore, the fork-shaped component 7012 is provided with a positioning pin 7017 extending in the front-rear direction. A stop block 70171 is provided on the rear end of the positioning pin that passes through the locking housing. During the locking process, the wrench 705 drives the locking pin shaft 7013 on the fork-shaped component to move forward from the initial state. The guide rod 7015 moves forward synchronously with the stop engagement between the outward-facing boss and the front wall of the bridging part. Through the stop engagement between the stop block and the locking housing, the limit position of the guide rod being pulled horizontally can be constrained, which not only enables the smooth insertion and removal of the chassis on the equipment mounting rack, but also avoids the phenomenon of excessive spring compression. Specifically, the bridging part 70122 of the fork-shaped component extends away from the chassis to form a first protruding edge, and the locking housing extends away from the chassis to form a second protruding edge. The front end of the positioning pin 7017 is connected to the first protruding edge, and the rear end passes through the second protruding edge and is provided with the stop block 70171.

[0084] This embodiment modifies the shape of the connecting rod, increasing the gap between the connecting rod and the wrench at the grip or operating part of the wrench to maximize operational efficiency. For details, please refer to [link to relevant documentation]. Figures 20 to 22 In this embodiment, the connecting rod is bent towards the front panel of the device to move away from the wrench. That is, the part of the connecting rod near the lower locking block is offset away from the front panel of the chassis to form a bend 7042. The bend increases the gap 706 between the connecting rod and the gripping part of the wrench. The gap should meet the following requirements:

[0085] 1) During turnover, the locking device is used as a handling handle, and the gap between the connecting rod and the wrench should be sufficient to meet the requirements of single-handed grip;

[0086] 2) When unlocking, the gap between the connecting rod and the locking hook of the limit locking mechanism should be sufficient to meet the requirements of single-finger hooking;

[0087] 3) When the hook of the locking block is hooked and connected to the locking pin of the locking device II, the gap between the connecting rod and the wrench should be sufficient to meet the needs of single-handed gripping, so as to avoid injury to the fingers and to prevent scratching or collision between the fingers and the locking hook.

[0088] Furthermore, the lower end of the connecting rod 704 is configured as a fork head structure 7043, which enables a stable connection between the lower end of the connecting rod and the lower locking block. Simultaneously, the bent portion 7042 is close to the fork head structure 7043, facilitating operator operation.

[0089] Furthermore, while ensuring the clearance meets the aforementioned requirements, to avoid the locking device protruding excessively from the front panel of the device and the locking device II having an excessively long fork-shaped cantilever due to ensuring the "clearance between the connecting rod and the wrench," please refer to [the relevant documentation / reference]. Figure 23 In this embodiment, a groove 502 is provided on the front panel of the chassis 50 to accommodate a portion of the connecting rod near the bend.

[0090] In this embodiment, the ear plate support 702 adopts a fork head structure, including two ear plates that are distributed opposite each other and a flange plate connecting the rear ends of the two ear plates. With the help of the two ear plates, not only can the locking block and the limiting locking mechanism be stably installed, but the space between the two ear plates can also realize the hidden layout of the parts, avoiding accidental operation by non-professional operators. In addition, the flange plate can be used to quickly assemble the ear plate support onto the front panel of the chassis.

[0091] Please see Figure 24 This embodiment of the lever-type locking device also includes a limiting locking mechanism 707 disposed on the upper lug support and used to constrain the upper end of the wrench to keep the locking device in a locked state. This prevents the wrench from failing to lock under working conditions (such as vibration, impact, acceleration, etc.) or from accidentally locking due to accidental contact. For details, please refer to [link to relevant documentation]. Figure 25 The limiting locking mechanism is shaped like a trigger and includes a mechanism body 7071 rotatably mounted on the upper locking block via a third pin 7072. A locking hook 7073 is provided on the front side of the mechanism body to form a stop engagement with the upper end of the wrench 705. The mechanism body protruding from the upper locking block is configured as a drive part 7074 for driving the mechanism body to rotate to release the stop engagement between the locking hook and the upper end of the wrench. A second elastic member is provided between the mechanism body and the upper locking block to keep the locking hook 7073 and the upper end of the wrench 705 in a stop engagement. When the hook of the locking block is engaged with the locking pin of the locking device II to achieve the locked state, the wrench is pulled upwards until the front wall of the upper end of the wrench forms a stop engagement with the locking hook. At this time, the lever-type locking device is in working condition. The elastic force provided by the second elastic element keeps the locking hook and the upper end of the wrench in a stop engagement, thereby avoiding locking failure and mis-locking under working conditions. When it is necessary to release the locked state, the finger enters the gap 706 between the wrench 705 and the connecting rod 704 and then grasps the operating part of the wrench (such as...). Figure 21 , Figure 22 As shown), the index finger hooks the driving part 7074 protruding from the upper locking block and drives the main body 7071 of the mechanism to rotate counterclockwise around the third pin 7072 (the second elastic element is compressed, which is to reserve elastic force for the reset of the main body of the mechanism), so that the locking hook part moves away from the front side of the upper end of the wrench (that is, the two are released from the stop engagement). At this time, the wrench can be driven to rotate clockwise. Under the action of the double rocker mechanism, the hook parts of the two locking blocks 703 are released from the locking pin 7013 of the corresponding locker II, and the chassis can be pulled out from the equipment mounting bracket.

[0092] Please see Figure 26The limiting locking mechanism has a cantilever beam 70731 extending forward in the main body 7071. The front end of the cantilever beam is bent to form a locking hook 7073. The gap between the locking hook and the main body is used to place the upper end of the wrench in the locked state.

[0093] Please see Figure 25 and Figure 26 The driving part 7074 in the limiting locking mechanism is set in the shape of a trigger. This shape conforms to ergonomics, which is more conducive to finger hook operation, realizes one-handed operation, and makes locking reliable and firm, and unlocking convenient and quick.

[0094] Please see Figure 26 and Figure 27 In the limiting locking mechanism, the second elastic element is a torsion spring 7075. After the torsion spring is mounted on the third pin, its first lever arm 70751 is connected to the limiting step 7032 provided on the upper locking block, and its second lever arm 70752 is connected to the main body of the mechanism located above the limiting step. The torsion spring provides the reset torque of the main body of the mechanism and the additional locking torque in the locked state. Specifically, the parameters of the torsion spring (including material, cross-sectional size, number of coils, shape, etc.) can be adjusted according to the working conditions of the equipment. Furthermore, torsion spring mounting grooves 70711 adapted to the torsion spring in its natural state are provided on the two side walls of the main body of the mechanism distributed in the left and right directions. The two torsion spring mounting grooves can improve the assembly efficiency of the torsion spring, and the two torsion springs can ensure the stability of the rotation process of the main body of the mechanism. At the same time, a cap 70712 located above the limiting step is provided on the side of the main body of the mechanism away from the locking hook. The end of the first lever arm 70751 abuts against the limiting step, and the end of the second lever arm 70752 abuts against the cap 70712. Further, please refer to Figure 27 In this embodiment, two torsion springs are distributed in the left and right direction. To ensure the synchronization of the two torsion springs during the rotation of the main body of the mechanism, the ends of the second force arms of the two torsion springs are connected by bridging force arms 70753 extending in the left and right direction. When the two torsion springs are installed in the torsion spring assembly slots on the corresponding sides, the bridging force arms abut against the cap edge.

[0095] To ensure the effectiveness of the self-locking mechanism, the limiting locking mechanism must not only be designed to meet the torque requirements of the torsion spring, but also ensure that the contact position between the locking hook and the upper end of the wrench is preferably higher than the third pin.

[0096] To improve the operational efficiency of the limiting locking mechanism, this embodiment provides an anti-slip structure on the drive unit and the gripping part of the wrench. The anti-slip structure increases friction and optimizes the tactile feel. Measures to obtain the anti-slip structure include, but are not limited to, surface sandblasting, textured / straight grooves, surface spraying, and surface vulcanization.

[0097] To improve the mating quality of the connector during insertion and removal, and to ensure the reliability of contact and mating (without digging), the device needs to maintain horizontal movement as much as possible during insertion and removal. Therefore, this embodiment optimizes the rod length of the dual rocker mechanism, so that:

[0098] 1) The total working stroke length of the double rocker mechanism is the same at the upper lug support and the lower lug support;

[0099] 2) At any given moment, the difference in instantaneous horizontal velocity and horizontal acceleration between the upper and lower lug supports is minimal, and the difference in instantaneous travel distance between the upper and lower lug supports is also minimal.

[0100] The fixing of the first pin 7031 on the ear support 702, the fixing of the second pin 7041 on the locking block 703, and the fixing of the third pin 7072 on the upper ear support 702 all adopt the riveting method, that is, the two ends of the pin protruding from the corresponding parts are provided with riveting structure.

[0101] Furthermore, this embodiment distributes the operating force evenly to the upper and lower positions, significantly improving the wear of the joints and sliding surfaces of each mechanism. Simultaneously, to prevent the first, second, and third pins from rotating relative to the corresponding mounting holes on the lug support, locking block, and upper lug support during the operation of the lever-type locking device, thus increasing the clearance of the mounting holes and causing unexpected wobbling of the lever-type locking device, anti-rotation structures, such as limiting flats, are provided between the first, second, and third pins and their corresponding mounting holes. In addition, to improve the wear resistance of the locking pins used for sliding fits, high-hardness materials can be selected and surface-coated with lubricating coatings such as molybdenum disulfide and PTFE.

[0102] The lever-type locking device with up-and-down linkage in this embodiment is still based on the lever-type lever principle. As a force-saving insertion / extraction aid, its "force-saving ratio" can meet the needs of single-handed operation—that is, the upward or downward lever force applied by an adult's single hand to the wrench is converted by the double rocker mechanism and applied to the chassis (including connectors) so that:

[0103] 1) Whether used individually or in pairs, the lever-type locking device with up-and-down linkage should provide a total horizontal insertion force to the equipment chassis that is greater than the static insertion force of the installed connector, and the total horizontal pull-out force provided by the locking device to the equipment chassis should be greater than the static pull-out force of the installed connector.

[0104] 2) When the wrench is pulled upwards, the effective horizontal insertion stroke of the lever-type locking device, which engages in a linkage locking mechanism, at the upper and lower locking pins is not less than the mating length of the contacts within the connector, to provide sufficient mating assistance. These contacts include, but are not limited to, low-frequency contacts, radio frequency contacts, coaxial differential contacts, fiber optic contacts, etc.

[0105] 3) When the wrench is pulled down, the lever-type locking device, which engages in a linkage mechanism, provides an effective horizontal pull-out stroke at the upper and lower locking pins that is not less than the mating length of the contacts within the connector, thus providing sufficient pull-out assistance. These contacts include, but are not limited to, low-frequency contacts, radio frequency contacts, coaxial differential contacts, and fiber optic contacts.

[0106] This embodiment does not change the existing main structure of the equipment mounting bracket, nor does it change the interface and function of the locking device, nor does it change the interface and function of the connector. Therefore, the lever-type locking device with upper and lower linkage locking proposed in this embodiment can be compatible with the installation system requirements of existing blind-mating LRUs. It is compatible with the open-loop (upper and lower ventilation) cooling scheme of ARINC404A model, the closed-loop (upper and lower ventilation) cooling scheme of ARINC600 model, the (front and rear ventilation) cooling scheme of MIL-STD-1788A model, the (front and rear ventilation) cooling scheme of VITA 58.0 model, and the (blind-mating liquid flow) cooling scheme of VITA 58.1 model, and will not cause a subversive change to the structural form of the mounting bracket.

[0107] Example 2

[0108] The difference between this embodiment and Embodiment 1 is that several springs in a compressed state are provided between the adjusting baffle and the inner wall of the front side of the locking device housing, and the several springs surround the guide rod.

[0109] Example 3

[0110] The difference between this embodiment and Embodiment 1 is that a different type of first elastic element, such as a spring washer, is provided between the adjusting baffle and the inner wall of the front side of the locking device housing.

[0111] Example 4

[0112] The difference between this embodiment and Embodiment 1 is that the first pin protruding from both ends of the ear support, the second pin protruding from both ends of the locking block, and the third pin protruding from both ends of the upper ear support are fixed by other types of limiting structures, such as open retaining rings, elastic cotter pins, and other standard parts.

[0113] Example 5

[0114] The difference between this embodiment and embodiment one is that the fork-shaped component in lock II is set as fixed, that is, the fork-shaped component is fixed to the front side of the lock housing, and the position of the fork-shaped component remains unchanged during the operation of the lever-type locking device and after the device is locked.

[0115] Example 6

[0116] The difference between this embodiment and Embodiment 1 is that in this embodiment, both connector 40 and adapter connector 501 are blind mating connectors. The blind mating connector can be a standard ARINC600 series connector or a MIL-DTL-83527B series connector. Alternatively, for durability considerations, a floating ARINC600 series connector or a MIL-DTL-83527B series connector can be used, supplemented by a locating pin 80 as a rear fastening element (such as...). Figure 28 , Figure 29 As shown, when the chassis is inserted into the mounting hole, the locating pin 80 is inserted into the pin hole on the rear side of the chassis to achieve a tight fit. The outer wall surface of the locating pin, extending in the front-to-back direction, is used to limit the vertical and horizontal directions when the chassis is inserted. At the same time, the rear side of the locating pin has a flange end face 801 extending in a plane perpendicular to the front-to-back direction. When the chassis is inserted into the mounting hole, the flange end face abuts against the rear panel of the chassis to limit the chassis in the insertion direction, thereby avoiding the pin collision phenomenon caused by excessive insertion of the contact parts. Furthermore, the flange end face and outer wall surface of the locating pin are coated with lubricating coatings such as molybdenum disulfide and PTFE to increase wear resistance.

[0117] If a floating blind-mating connector is used in conjunction with locating pins to achieve a secure installation of the equipment (forming a blind-mating installation system), the number and installation position of the locating pins should be adapted to the number and installation position of the lever-type locking devices with upper and lower linkage. That is, if lever-type locking devices with upper and lower linkage are used in pairs, the locating pins should also be used in pairs, and the horizontal spacing of the locating pins should be as consistent as possible with the horizontal spacing of the two lever-type locking devices to optimize force transmission. Specifically, the floating blind-mating connector 40 and the matching locating pins 80 are both set on the connector mounting plate 20. When the lever-type locking devices are used in pairs, the two locating pins are distributed on both sides of the blind-mating connector in the left-right direction, and the upper and lower ends of the connector mounting plate are connected to the corresponding side shelves 30, respectively.

[0118] Example 7

[0119] Compared to any of the embodiments in Embodiments 1 to 6, the difference in this embodiment is that the wrench is connected to the locking block located on the upper side, and the lower end of the wrench is constrained by the limiting locking mechanism provided on the lower lug support in the locked state.

[0120] Example 8

[0121] Based on the lever-type locking device with up-and-down linkage locking described in any of the foregoing embodiments, this embodiment proposes a device including a device mounting frame and a chassis. The device mounting frame includes several shelves 30 extending in the left-right direction. The front and rear ends of two guide rails 10, which are symmetrically distributed in the left-right direction, are respectively connected to the shelves 30 on the corresponding side of the same layer. The upper and lower ends of the connector mounting plate 20 located on the rear side of the two guide rails are respectively connected to the shelf 30 on the rear side of the adjacent layer. Two locking devices II 701 are symmetrically arranged on the front shelf of the adjacent layer. Two locking blocks 703 are provided on the front panel of the chassis. The two locking blocks are respectively connected to the corresponding locking devices II to lock the chassis on the device mounting frame. The two locking blocks are respectively disconnected from the corresponding locking devices II to allow the chassis and the device mounting frame to separate.

[0122] Example 9

[0123] Based on Embodiment 8, several modules including two guide rails and a connector mounting plate can be arranged along the length of two shelves on the same layer to form a single-layer shelving state. Of course, if several shelves are set as multiple layers in the vertical direction, a multi-layer shelving state can be further formed.

[0124] The above description is merely a preferred embodiment of the present invention. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the scope of the present invention and based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A lever-type locking device for vertical linkage locking, characterized in that, It includes two locking devices II (701) symmetrically distributed in the vertical direction and used to connect to the corresponding shelves (30) in the equipment mounting frame, two lug supports (702) distributed in the vertical direction and used to connect to the front panel of the chassis (50), and two locking blocks (703) distributed in the vertical direction and respectively hinged to the corresponding lug supports (702). The locking blocks have a locked state connected to the corresponding locking device II and an unlocked state disconnected from the corresponding locking device. The upper and lower ends of the connecting rod (704) are respectively hinged to the locking blocks on the corresponding sides. One of the locking blocks is connected to a wrench (705) and there is a gap (706) between the wrench and the connecting rod in the locked state for holding the wrench to operate. The lug support on which the other locking block is mounted is provided with a limiting locking mechanism (707) for restraining the end of the wrench so that the locking device is kept in the locked state.

2. The lever-type locking device for upper and lower linkage locking according to claim 1, characterized in that, The locker II includes a locker housing (7011), a fork-shaped component (7012), and a locking pin (7013). The locker housing has a mating surface on the side near the corresponding chassis for connecting with the corresponding shelf. The fork-shaped component is located on the front side of the locker housing. The locking pin (7013) is mounted on the two ear plates (70121) of the fork-shaped component in the left-right direction and is used to hook and connect with the hook of the corresponding locking block to achieve a locked state, and to disconnect the hook and connect with the hook of the corresponding locking block to achieve an unlocked state.

3. A lever-type locking device for upper and lower linkage locking according to claim 2, characterized in that, An adjusting baffle (7014) is slidably provided on the rear side inside the lock housing (7011). A guide rod (7015) extending in the front-rear direction is connected to the adjusting baffle and the front end of the guide rod that passes through the lock housing is connected to the fork-shaped member (7012). A first elastic member in a compressed state is provided between the adjusting baffle and the inner wall of the front side of the lock housing.

4. A lever-type locking device for upper and lower linkage locking according to claim 3, characterized in that, The rear end of the guide rod is threadedly connected to the adjusting baffle.

5. A lever-type locking device for upper and lower linkage locking according to claim 4, characterized in that, The adjusting baffle includes a columnar body extending in the front-back direction and a disc-shaped body located at the rear end of the columnar body and extending in a plane perpendicular to the front-back direction. The columnar body and the rear end of the guide rod are threaded together.

6. A lever-type locking device for upper and lower linkage locking according to claim 4, characterized in that, The front end of the guide rod is provided with a force-applying structure for rotating the guide rod to adjust the initial compression of the first elastic element.

7. A lever-type locking device for upper and lower linkage locking according to claim 3, characterized in that, An outward-facing boss (70151) is provided at the front end of the guide rod that protrudes from the housing of the locker.

8. A lever-type locking device for upper and lower linkage locking according to claim 3, characterized in that, The fork-shaped part (7012) is provided with a positioning pin (7017) extending in the front-rear direction. The rear end of the positioning pin, which passes through the housing of the locker, is provided with a stop (70171) for engaging with the housing of the locker during the locking process to limit the forward movement of the guide rod to the limit position.

9. A lever-type locking device for upper and lower linkage locking according to claim 3, characterized in that, The first elastic element is a spring 7016, and the guide rod is installed inside the spring.

10. A lever-type locking device for upper and lower linkage locking according to claim 1, characterized in that, The portion of the connecting rod near one of the locking blocks is offset away from the front panel of the chassis to form a bend (7042).

11. A lever-type locking device for upper and lower linkage locking according to claim 1, characterized in that, The end of the link (704) is configured as a fork head structure (7043).

12. A lever-type locking device for upper and lower linkage locking according to claim 10, characterized in that, The front panel of the chassis has a groove (502) for accommodating a portion of the connecting rod near the bend.

13. A lever-type locking device for upper and lower linkage locking according to claim 1, characterized in that, The limiting locking mechanism includes a mechanism body (7071) rotatably mounted on the lug support, a locking hook (7073) for forming a stop engagement with the end of the wrench on the front side of the mechanism body, a driving part (7074) protruding from the lug support for driving the mechanism body to rotate to release the stop engagement between the locking hook and the end of the wrench, and a second elastic element for maintaining the stop engagement between the locking hook and the end of the wrench between the mechanism body and the lug support.

14. A lever-type locking device for upper and lower linkage locking according to claim 13, characterized in that, The main body of the mechanism (7071) is provided with a forward-extending cantilever beam (70731), the front end of which is bent to form a locking hook (7073), and the gap between the locking hook and the main body of the mechanism is used to place the end of a wrench in the locked state.

15. A lever-type locking device for upper and lower linkage locking according to claim 13, characterized in that, The drive unit (7074) is configured as a trigger.

16. A lever-type locking device for upper and lower linkage locking according to claim 13, characterized in that, The main body of the mechanism is rotatably mounted on the ear support via the third pin (7072). The second elastic element is a torsion spring (7075). The first lever arm (70751) of the torsion spring mounted on the third pin is connected to the limiting step (7032) provided on the ear support, and its second lever arm (70752) is connected to the main body of the mechanism located on one side of the limiting step.

17. A lever-type locking device for upper and lower linkage locking according to claim 16, characterized in that, An anti-rotation structure is provided between the third pin and the corresponding mounting hole on the lug support.

18. A lever-type locking device for upper and lower linkage locking according to claim 16, characterized in that, The main body of the mechanism is provided with torsion spring mounting grooves (70711) on the two side walls distributed in the left and right directions, which are adapted to the torsion springs in their natural state. The ends of the second lever arms of the two torsion springs are connected by bridging lever arms (70753) extending in the left and right directions.

19. A lever-type locking device for upper and lower linkage locking according to claim 18, characterized in that, The main body of the mechanism is provided with a cap edge (70712) on the side of the limiting step away from the locking hook. The end of the first lever arm (70751) abuts against the limiting step, and the end of the second lever arm (70752) and the bridging lever arm (70753) abut against the cap edge.

20. A lever-type locking device for upper and lower linkage locking according to claim 13, characterized in that, Anti-slip structures are provided on the drive unit and the grip area of ​​the wrench.

21. A lever-type locking device for upper and lower linkage locking according to any one of claims 1-20, characterized in that, A wrench (705) is connected to the locking block located on the lower side, and a limit locking mechanism (707) is provided on the ear support located on the upper side.

22. A lever-type locking device for upper and lower linkage locking according to any one of claims 1-20, characterized in that, The locking block is hinged to the corresponding lug support by the first pin (7031), and the end of the connecting rod is hinged to the corresponding locking block by the second pin (7041). Anti-rotation structures are provided between the first pin and the corresponding mounting hole on the lug support, and between the second pin and the corresponding mounting hole on the locking block.

23. A lever-type locking device for upper and lower linkage locking according to any one of claims 1-20, characterized in that, The transmission angle of the wrench shall not be less than 60°.

24. A device, comprising a device mounting frame and a chassis, wherein the device mounting frame includes a plurality of shelves (30) extending in a left-right direction, and the front and rear ends of two guide rails (10) symmetrically distributed in the left-right direction are respectively connected to shelves on corresponding sides of the same layer, and the upper and lower ends of a connector mounting plate (20) located on the rear side of the two guide rails are respectively connected to shelves on the rear side of adjacent layers, characterized in that, It also includes a lever-type locking device for vertical linkage locking as described in any one of claims 1-23, wherein two locking devices II (701) symmetrically distributed in the vertical direction are respectively disposed on the front shelf of the adjacent layer, and two locking blocks (703) distributed in the vertical direction are disposed on the front panel of the chassis, the two locking blocks are respectively connected to the corresponding locking devices II to lock the chassis on the equipment mounting frame, and the two locking blocks are respectively disconnected from the corresponding locking devices II to allow the chassis and the equipment mounting frame to be separated.

25. The device according to claim 24, characterized in that, The connector (40) on the connector mounting plate and the adapter connector (501) on the rear panel of the chassis are both floating blind-mating connectors. The connector mounting plate is provided with a positioning pin (80) and a flange end face (801) extending in a plane perpendicular to the front and rear directions is provided on the rear side of the positioning pin. When the chassis is locked on the equipment mounting frame, the positioning pin is inserted into the pin hole at the rear of the chassis and the flange end face abuts against the rear panel of the chassis.

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