Case

Abstract

The utility model relates to the field of cases, in particular to a case which comprises a case body, an installation cavity is formed in the case body, and an opening of the installation cavity is formed in a front cabin door; the first electronic module is contained in the mounting cavity, and bosses extending laterally are arranged on the two sides of the first electronic module; the locking mechanism comprises locking assemblies arranged on the two sides of the first electronic module respectively, and each locking assembly is provided with a mounting shaft; the mounting shafts are mounted on the corresponding bosses, a first wedge-shaped block, a second wedge-shaped block and an odd number of floating wedge-shaped blocks located between the first wedge-shaped block and the second wedge-shaped block are sequentially arranged on each mounting shaft, and the adjacent wedge-shaped blocks are in sliding fit through wedge-shaped surfaces; the extending ends of the two groups of rotary handles are fixedly connected through a connecting part; the utility model aims to provide a case which does not need auxiliary tools, can realize synchronous locking or unlocking on two sides, simplifies operation so as to facilitate quick pulling and inserting of an electronic module, meets the requirement of quick data transfer after flight, and is high in reliability.

Description

Technical Field

[0001] This utility model relates to the field of chassis, specifically to a chassis. Background Technology

[0002] In the aviation field, the flight chassis is the core carrier for flight data processing and equipment control. It must meet two major requirements at the same time: first, to ensure the installation stability of electronic components under vibration and air pressure change environments during flight; and second, to facilitate operation during ground maintenance. In particular, after the flight mission is completed, it is necessary to quickly remove the electronic modules storing data to read parameters, and its insertion and removal efficiency directly affects the preparation for subsequent missions.

[0003] Currently, most electronic modules are fixed to the chassis mounting cavity using traditional wedge-shaped locking devices. This method has significant limitations in operation. Disassembly requires using a wrench to rotate the independent locking screws on both sides of the module to release the radial compressive force of the wedge blocks. Subsequently, the locking strip must be loosened, and the puller must be opened before the module can be pulled out. With this method, it is difficult to ensure consistent force when adjusting the screws on both sides during installation or fixing, which can easily lead to module misalignment or jamming. The inability to perform simultaneous operations on both sides and the need for multiple steps will prolong the installation or removal time, making it unsuitable for scenarios requiring rapid data transfer after flight. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a chassis that can lock or unlock simultaneously from both sides without the need for auxiliary tools, simplifying operation for quick insertion and removal of electronic modules, adapting to the needs of rapid data transfer after flight and ensuring high reliability.

[0005] The purpose of this utility model is achieved as follows: a chassis, comprising:

[0006] The housing has an internal mounting cavity, the opening of which is located on the front hatch;

[0007] The first electronic module is housed within the mounting cavity, and the first electronic module has laterally extending bosses on both sides.

[0008] The locking mechanism includes locking components disposed on both sides of the first electronic module, each locking component having a mounting shaft; the mounting shaft is mounted on a corresponding boss, and a first wedge block, a second wedge block, and an odd number of floating wedge blocks located between the two are sequentially provided on the mounting shaft, with adjacent wedge blocks slidingly engaged through wedge surfaces; the distal end of the mounting shaft extends through the first wedge block and is hinged to an eccentric structure, and the side of the eccentric structure is provided with a rotatable handle, the extension ends of the two sets of rotatable handles being connected and fixed through a connecting part; the limiting part at the distal end of the mounting shaft abuts against the second wedge block axially;

[0009] A sensor bracket is disposed within the mounting cavity, and the sensor bracket is provided with an outwardly extended pre-tightened guide post. A contact block is provided at the distal end of the guide post, and a sensing tongue is provided at the rear end of the contact block.

[0010] The sensor is mounted on a sensor bracket and has a slot for inserting a sensing probe.

[0011] An openable cover is provided over the opening of the front hatch, and the inner side of the cover has a cavity for accommodating the extended portion of the first electronic module.

[0012] A clamping element is located on the inner side of the cover plate and extends toward the mounting cavity, and the distal end of the clamping element is used to clamp the contact block when the cover plate is closed.

[0013] The eccentric cam is integrally formed with the rotary handle, and the two sets of rotary handles are integrally formed through a connecting part.

[0014] The cover plate is hinged to the front hatch, and the free end of the cover plate is provided with a locking assembly, which is used to lock the cover plate to the front hatch when the cover plate is closed.

[0015] The locking assembly includes:

[0016] A base plate connected to the outer wall of the cover plate, the base plate having a protruding support column, a knob supported by a bearing on the support column, the knob having a radially extending limiting pin;

[0017] The front hatch is also provided with a limit block, and the limit block is provided with a limit groove for the limit pin to be screwed in.

[0018] Two limiting pins are symmetrically arranged on the knob, and a limiting block is provided on the front hatch corresponding to each limiting pin. The bottom of the limiting groove has a wedge surface inclined along the screwing direction of the limiting pin, so that a clamping force is gradually generated when the limiting pin is screwed in. The end of the wedge surface has a recess that matches the shape of the end of the limiting pin. The inner wall of the recess fits against the circumferential side of the limiting pin to form an anti-loosening positioning structure. An elastic washer is sandwiched between the mating surfaces of the cover plate and the front hatch. The two sides of the elastic washer fit against the mating surfaces of the cover plate and the front hatch, respectively. A buffer pad is provided between the protruding part of the first electronic module and the inner wall of the cavity. The cavity is a rectangular cavity. Pressure strips are provided on the upper and lower side walls of the rectangular cavity. The side walls of the pressure strips limit the protruding part of the first electronic module.

[0019] The end of the first electronic module is provided with two stop protrusions corresponding to the eccentric structure. The stop protrusions are provided with a clearance step to make way for the eccentric structure. The side wall of the stop protrusion away from the housing is a second limiting surface.

[0020] The distal end of the clamping member is provided with an arc-shaped contact surface, which is used to fit and press against the contact block.

[0021] The sensor bracket includes two horizontal arms that are opposite each other, which are connected to the housing by fasteners. The two horizontal arms are connected by a straight wall, which has a through hole for the sensing tongue to pass through. Each of the two horizontal arms has a seat hole, in which a guide post is installed. A spring is fitted on the guide post, and the front end of the guide post is connected to a connection hole on the contact block. The sensor bracket also includes a rearwardly extending mounting boss, on which the sensor is mounted.

[0022] A column is provided at the front end of the contact block, and a contact ball is provided at the head end of the column.

[0023] The above solution offers the following advantages: When installing the electronic module, no auxiliary tools are needed. Simply rotate the two sets of extended-end-fixed rotary handles manually to synchronously drive the mounting shafts of the locking components on both sides of the first electronic module to rotate. This causes the first wedge block, the second wedge block, and an odd number of floating wedge blocks on the shaft to slide along the wedge surface. The odd number of floating wedge blocks, through the superposition of the wedge surface, uniformly convert the rotational force into radial compressive force. This avoids the uneven force and installation misalignment caused by adjusting the components on both sides separately in the traditional structure, eliminating the need for repeated calibration steps. Furthermore, the rotary handle linkage design enables synchronous locking / unlocking. After unlocking, the rotary handle can be directly used as the force application point. The operator can pull out the first electronic module by holding the rotary handle without disassembling the locking strip or using a puller. This compresses the traditional multi-step insertion and removal process into two steps, meeting the need for quick module removal and data reading after flight. Simultaneously, when the cover is closed, its inner clamping element presses against the contact block on the sensor bracket, pushing the pre-tightening guide post to insert the sensing tongue into the sensor slot and triggering the sensing probe, forming an installation feedback mechanism to prevent module loosening or data transmission interruption due to installation misalignment. The recessed cavity on the inner side of the cover can also accommodate the extended portion of the first electronic module, restricting the rotation handle and forming a dual protection of radial fixation and axial limitation with the radial locking mechanism, restricting the axial movement of the module during flight vibration, preventing bumps during insertion and removal, and protecting the integrity of the module. This utility model overcomes the traditional defects in terms of ease of operation, installation accuracy, and operational stability, enabling tool-free rapid maintenance of electronic modules and adapting to the harsh operating conditions of vibration and air pressure changes in aviation scenarios, ensuring reliable module installation and efficient data transfer.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2This is a schematic diagram of the chassis structure after the front door has been removed.

[0027] Figure 3 This is a schematic diagram of the structure of this utility model after the cover plate has been removed;

[0028] Figure 4 A three-dimensional view of the cover plate and the first electronic module;

[0029] Figure 5 This is a schematic diagram showing the relative positions of the cover plate and the throttle handle;

[0030] Figure 6 This is a schematic diagram of the cover plate structure;

[0031] Figure 7 for Figure 6 Sectional view of AA;

[0032] Figure 8 A first-person perspective stereoscopic view of the sensor bracket;

[0033] Figure 9 A second-view stereoscopic view of the sensor bracket;

[0034] Figure 10 This is a schematic diagram of the cross-sectional structure of the sensor bracket;

[0035] Figure 11 This is a structural diagram of the locking assembly;

[0036] Figure 12 This is a schematic diagram of a limit block structure.

[0037] In the attached diagram, 100 is the housing; 1001 is the mounting cavity; 101 is the front hatch; 102 is the cover plate; 103 is the locking assembly; 104 is the first electronic module; 105 is the boss; 106 is the hinge; 108 is the locking assembly; 109 is the mounting shaft; 110 is the first wedge block; 111 is the second wedge block; 112 is the floating wedge block; 1121 is the wedge surface; 113 is the eccentric structure; 1131 is the cam; 114 is the rotary handle; 115 is the connecting part; 116 is the cavity; 117 is the sensor bracket; 118 is the guide post; 119 is the contact block; 120 is the sensing tongue; 121 is... Sensor; 122 is a slot; 124 is a clamping part; 125 is a base plate; 126 is a support column; 1261 is a bearing; 127 is a knob; 128 is a limit pin; 129 is a limit block; 130 is a limit groove; 131 is a buffer pad; 132 is a pressure strip; 133 is a stop boss; 134 is a clearance step; 135 is a second limit surface; 138 is a cross arm; 139 is a fastener; 140 is a straight wall; 142 is a seat hole; 143 is a spring; 144 is a connecting hole; 145 is a mounting boss; 146 is a column; 147 is a contact ball head; 1021 is a mounting groove; 1291 is a recess. Detailed Implementation

[0038] Referring to the accompanying drawings, the specific embodiments of this utility model will be described in detail.

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] In the description of this utility model, it should be understood that the terms center, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, and outer, indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. In the description of this utility model, the terms first and second are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as first and second can be used to explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more. It should be noted that in practical applications, due to limitations in equipment precision or installation errors, absolute parallelism or perpendicularity is difficult to achieve. In this utility model, the descriptions of vertical, parallel, or unidirectional are not absolute limiting conditions, but rather indicate that vertical or parallel structural settings can be achieved within a preset error range, and the corresponding preset effects can be achieved. In this way, the technical effects of the defined features can be maximized, and the corresponding technical solutions can be easily implemented, thus having high feasibility.

[0041] In the description of this specification, the references to the terms "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] See Figures 1-12 An embodiment of a chassis, the chassis includes a housing 100, an internal mounting cavity 1001, the opening of the mounting cavity 1001 being disposed on a front door 101;

[0043] The first electronic module 104 is housed in the mounting cavity 1001, and the first electronic module 104 has laterally extending bosses 105 on both sides.

[0044] The locking mechanism includes locking components 108 disposed on both sides of the first electronic module 104, each locking component 108 having a mounting shaft 109; the mounting shaft 109 is mounted on a corresponding boss 105, and a first wedge block 110, a second wedge block 111, and an odd number of floating wedge blocks 112 located between them are sequentially provided on the mounting shaft 109, adjacent wedge blocks are slidably engaged by a wedge surface 1121; the distal end of the mounting shaft 109 extends out of the first wedge block 110 and is hinged to an eccentric structure 113, and the side of the eccentric structure 113 is provided with a rotatable handle 114, the extension ends of the two sets of rotatable handles 114 are connected and fixed by a connecting part 115; the limiting part at the distal end of the mounting shaft 109 abuts against the second wedge block 111 axially.

[0045] A sensor bracket 117 is disposed in the mounting cavity 1001, and the sensor bracket 117 is provided with an outwardly extended pre-tightened guide post 118; the distal end of the guide post 118 is provided with a contact block 119, and the rear end of the contact block 119 is provided with a sensing tongue 120.

[0046] The sensor 121 has a slot 122 for inserting the sensing tongue 120, and the slot 122 is equipped with a sensing probe.

[0047] An openable cover 102 is provided over the opening of the front door 101, and the inner side of the cover 102 has a cavity 116 for accommodating the extended portion of the first electronic module 104.

[0048] A clamping member 124 is disposed on the inner side of the cover plate 102 and extends toward the mounting cavity 1001, and the distal end of the clamping member 124 is used to clamp the contact block 119 when the cover plate 102 is closed.

[0049] In some embodiments, the cam 1131 of the eccentric structure 113 is integrally formed with the rotary handle 114, and the two sets of rotary handles 114 are integrally formed through the connecting part 115. This structure can reduce the number of parts and at the same time enable the rotary handle 114 to have high strength. When the rotary handle 114 is turned, the two locking components 108 can respond quickly and synchronously.

[0050] In some embodiments, the cover plate 102 is hinged to the front hatch 101, and the free end of the cover plate 102 is provided with a latch assembly 103. The latch assembly 103 is used to lock the cover plate 102 and the front hatch 101 when the cover plate 102 is closed. With this structure, the cover plate 102 can be opened quickly. The latch assembly 103 can connect and unlock the cover plate 102 to the front hatch 101, which can be conveniently and quickly unlocked and fixed.

[0051] In some specific embodiments, the locking assembly 103 includes a base plate 125 connected to the outer wall of the cover plate 102. The base plate 125 is provided with a protruding support column 126. A knob 127 is supported on the support column 126 by a bearing 1261. The knob 127 is provided with a radially extending limiting pin 128. The front hatch 101 is also provided with a limiting block 129. The limiting block 129 is provided with a limiting groove 130. The limiting groove 130 is used for the limiting pin 128 to be screwed in. The limiting groove 130 can accommodate the limiting pin 128 and limit the movement of the limiting pin 128, thereby achieving locking. The locking assembly 103 is securely connected to the outer wall of the cover plate 102 via the base plate 125. The support column 126, in conjunction with the bearing 1261, supports the knob 127, enabling smooth manual rotation of the knob 127 without tools. The limiting pin 128 of the knob 127 is adapted to the limiting groove 130 of the limiting block 129 of the front cabin door 101. After being screwed in, it can accurately accommodate the limiting pin 128 and restrict the movement of the limiting pin 128 through the structure of the limiting groove 130, forming a reliable lock. This design simplifies the locking operation of the cover plate 102, requiring no auxiliary tools; locking / unlocking can be completed simply by rotating the knob 127. It also uses the limiting groove 130 to constrain the limiting pin 128, resisting accidental opening of the cover plate 102 due to flight vibrations. This ensures the axial limiting effect of the cover plate 102 on the first electronic module 104, providing locking protection for the stable operation of the first electronic module 104 under aviation conditions.

[0052] In some embodiments, two limiting pins 128 are symmetrically arranged on the knob 127, and a limiting block 129 is provided on the front hatch 101 corresponding to each limiting pin 128. The bottom of the limiting groove 130 has a wedge surface that is inclined along the screwing direction of the limiting pin 128 so that a clamping force is gradually generated when the limiting pin 128 is screwed in. The end of the wedge surface is provided with a recess 1291 that is adapted to the shape of the end of the limiting pin 128. The inner wall of the recess 1291 fits against the circumferential side of the limiting pin 128 to form an anti-loosening mechanism. Positioning structure; an elastic washer (not shown in the figure) is sandwiched between the mating surfaces of the cover plate 102 and the front door 101 to compensate for assembly errors and provide pre-tightening force. An installation groove 1021 can be provided in the cover plate 102 for installing the elastic washer. The elastic washer can be made of polyurethane foam, rubber or silicone. The two sides of the elastic washer are respectively attached to the mating surfaces of the cover plate 102 and the front door 101. A buffer pad 131 is provided between the extended part of the first electronic module 104 and the inner wall of the cavity 116.

[0053] The buffer pad 131 is made of polyurethane foam, rubber, or silicone. Its elastic material effectively absorbs the impact energy generated by vibration and turbulence in the housing 100 during flight, preventing direct hard contact between the extended portion of the first electronic module 104 and the inner wall of the cavity 116, thus avoiding scratches to the outer shell and damage to internal data storage components. Addressing the issue of large temperature variations in aviation scenarios, such as the transition between high-altitude low temperatures and ground-level ambient temperatures, the elastic properties of the buffer pad 131 compensate for deformation gaps caused by differences in the coefficients of thermal expansion and contraction between the first electronic module 104, the cover plate 102, and the housing 100. This prevents the first electronic module 104 from loosening or experiencing structural stress concentration due to temperature differences, ensuring the reliability of the connection between the first electronic module 104 and the housing 100. Furthermore, during the operation of opening and closing the cover plate 102… During the process, the buffer pad 131 can serve as a transition medium between the extended portion of the first electronic module 104 and the inner wall of the cavity 116, eliminating the hard contact of direct collision between the two when the cover plate 102 is closed, and the frictional damage caused by relative sliding when the cover plate 102 is opened. This reduces operating noise and mechanical wear between the cover plate 102 and the first electronic module 104, extending the service life of the components. The buffer pad 131 can also fill the assembly gap between the extended portion of the first electronic module 104 and the inner wall of the cavity 116, eliminating the axial / radial movement of the first electronic module 104 during flight caused by the gap. This indirectly improves the connection stability between the first electronic module 104 and the internal connectors of the housing 100, such as signal interfaces, avoiding signal transmission interruption caused by movement, and meeting the stringent requirements of avionics equipment for connection reliability.

[0054] In some embodiments, the cavity 116 is a rectangular cavity, and pressure strips 132 are respectively provided on the upper and lower sidewalls of the rectangular cavity. The sidewalls of the pressure strips 132 limit the extension portion of the first electronic module 104. This structure prevents the first electronic module 104 from shifting due to vibration or insertion / removal operations, avoiding the protection failure problem caused by the shifting of the buffer pad 131 after long-term use when relying solely on the elastic constraint of the buffer pad 131 itself.

[0055] In some embodiments, the end of the first electronic module 104 is provided with two stop protrusions 133 corresponding to the eccentric structure 113. The stop protrusions 133 are provided with a clearance step 134 to make way for the eccentric structure 113. The side wall of the stop protrusions 133 away from the housing 100 is a second limiting surface 135.

[0056] Understandably, the stop boss 133 at the end of the first electronic module 104 corresponding to the eccentric structure 113 and its clearance step 134 can provide reasonable installation space for the cam 1131 without interfering with the normal rotation of the eccentric structure 113, thus avoiding hard collisions or jamming between the cam 1131 and the body of the first electronic module 104 during rotation, ensuring smooth locking / unlocking actions. At the same time, the second limiting surface 135 of the stop boss 133, which is away from the housing 100, can precisely limit the rotation angle of the cam 1131 of the eccentric structure 113, preventing the rotary handle 114 from rotating excessively and causing the first wedge block 110, the second wedge block 111, and the floating wedge block to rotate. Excessive compression between 112 causes component deformation or loss of locking force, allowing the rotary handle 114 to stably remain at the limit position of locking or unlocking. The operator can judge the operating status without visual calibration, significantly improving the convenience and accuracy of operation. In addition, this limiting structure can also reduce the unexpected rotation of cam 1131 in the vibration environment of aviation flight, further ensuring the stability of the locking state of the first electronic module 104, avoiding the risk of loosening of the first electronic module 104 caused by the displacement of cam 1131 due to vibration. At the same time, it protects the eccentric structure 113 and extends its service life. Overall, it meets the stringent requirements for component operation reliability and structural stability in aviation scenarios.

[0057] In some embodiments, the sensor bracket 117 includes two horizontal arms 138 that are opposite each other, the horizontal arms 138 being connected to the housing 100 by fasteners 139, the two horizontal arms 138 being connected by a straight wall 140, the straight wall 140 being provided with a through hole for the sensing tongue 120 to pass through; the two horizontal arms 138 are respectively provided with seat holes 142, guide posts 118 are installed in the seat holes 142, springs 143 are sleeved on the guide posts 118, and the front end of the guide posts 118 is connected to the connection hole 144 on the contact block 119; the sensor bracket 117 also includes a rearwardly extending mounting boss 145, on which the sensor 121 is installed.

[0058] Understandably, the sensor bracket 117 structure, through the design of two horizontal arms 138, a straight wall 140, and a mounting boss 145, with the upper and lower opposing horizontal arms 138 rigidly connected to the housing 100 by fasteners 139, and the straight wall 140 providing fixed support for the horizontal arms 138, constructs a stable main bracket structure. This can prevent deformation or displacement of the sensor bracket 117 under the vibration environment of aircraft flight, providing a reliable installation benchmark for components such as the guide column 118 and the sensor 121, fundamentally eliminating detection deviations caused by loosening of the sensor bracket 117; secondly, the straight wall... The through-hole on 140 provides precise guidance for the sensing tongue 120, ensuring that when the contact block 119 moves the sensing tongue 120, it is always inserted into the slot 122 of the sensor 121 along a preset path, preventing the sensing tongue 120 from shifting or jamming. Simultaneously, the seat holes 142 of the two cross arms 138 form a sliding fit with the guide post 118, further limiting the radial movement of the guide post 118, ensuring the coaxiality of the sensing tongue 120 and the slot 122 of the sensor 121, and improving the accuracy of the installation detection. The spring 143 fitted on the guide post 118 has a pre-tightening characteristic, which on the one hand allows the contact... The contact block 119 always maintains an outward extension trend. When the cover plate 102 is closed, it can smoothly drive the guide post 118 to move axially with the squeezing of the clamping member 124, ensuring that the sensing tongue 120 is effectively inserted into the sensor 121 to trigger detection. When the cover plate 102 is unlocked, it can push the guide post 118 and the contact block 119 to reset, preparing for the next installation of the first electronic module 104 and avoiding failure caused by the contact block 119 being stuck. The rearward-extending mounting boss 145 can accurately position the sensor 121 without interfering with the installation and removal operation of the first electronic module 104, while ensuring that the sensor 121 and the sensor 121 are properly positioned. The relative position of the sensing tongue 120 is fixed to avoid collision with the sensor 121 during the insertion and removal of the first electronic module 104, while simplifying the installation and maintenance process of the sensor 121. Furthermore, the entire sensor bracket 117 integrates the guide post 118, spring 143, contact block 119, and sensor 121 into a single unit, eliminating the need for separate positioning and installation of each detection component. This significantly reduces assembly steps and fitting errors, improves assembly efficiency, and facilitates overall disassembly and assembly for later maintenance, meeting the core requirements of component reliability, detection stability, and ease of maintenance in aerospace scenarios. The design of the two horizontal arms 138, the straight wall 140, and the mounting boss 145 can also be integrated, reducing the number of parts, increasing strength, and facilitating assembly.

[0059] In some embodiments, a column 146 is provided at the front end of the contact block 119, and a contact ball head 147 is provided at the head end of the column 146. It can be understood that the cover plate 102 is connected by a hinge 106 to achieve rotational closure. The contact ball head 147 of the column 146 at the front end of the contact block 119 is designed to precisely adapt to the arc-shaped movement trajectory of the cover plate 102 during rotation, avoiding hard friction or jamming between the contact block 119 and the inner clamping member 124 of the cover plate 102. At the same time, the contact ball head 147 replaces the traditional surface contact with point contact, which can reduce the wear of the contact surface, thereby ensuring that the sensing tongue 120 is accurately inserted into the slot 122 of the sensor 121 to achieve reliable installation detection, and at the same time extend the service life of the contact block 119 and the clamping member 124.

[0060] Of course, in some other embodiments, the distal end of the clamping member 124 is provided with an arc-shaped contact surface, which is used to fit and press against the contact block 119, to push the contact block, and to move relative to the contact block, so as to avoid hard friction or jamming between the contact block 119 and the clamping member 124 on the inner side of the cover plate 102.

[0061] Using the above scheme, during installation, the first electronic module 104 is pushed in along the mounting cavity 1001 until the extended part of the first electronic module 104 extends out of the opening of the front door 101. At this time, the bosses 105 on both sides of the first electronic module 104 are initially aligned with the mounting shaft 109 of the locking assembly 108. Without the aid of tools, manually grasp the linkage connection 115 of the two sets of rotary handles 114. The flipping action is synchronously transmitted to the locking components 108 on both sides. The rotary handles 114 drive the cam 1131 of the eccentric structure 113 to rotate. The cam 1131 pushes the mounting shaft 109 to move axially toward the second wedge block 111 through the eccentric torque. After the second wedge block 111 is squeezed, it slides along the wedge surface 1121 of the floating wedge block 112. The floating wedge block 112 synchronously transmits the force to the first wedge block 110. Finally, the first wedge block 110, the second wedge block 111, and the floating wedge block 112 on both sides jointly generate radial extrusion force, which tightly presses the first electronic module 104 against the inner wall of the mounting cavity 1001, thus completing the locking.

[0062] The hinge 106 connecting the cover plate 102 to the front door 101 flips the cover plate 102, causing the cover plate 102 to rotate toward the mounting cavity 1001 until it is completely closed. During the closing process, the clamping member 124 on the inner side of the cover plate 102 first contacts the contact ball head 147 of the contact block 119. As the cover plate 102 continues to rotate, the clamping member 124 gradually applies pressure to push the contact block 119.

[0063] When the contact block 119 is subjected to force, it drives the guide post 118 to slide along the seat hole 142 of the sensor bracket 117, and the spring 143 on the outside of the guide post 118 is compressed. At the same time, the sensing tongue 120 at the rear end of the contact block 119 passes through the through hole of the straight wall 140 and is inserted into the slot 122 of the sensor 121. When the insertion depth of the sensing tongue 120 reaches the trigger threshold, the sensing probe of the sensor 121 sends an installation signal to confirm that the first electronic module 104 is reliably installed and connects the data connection. The cover plate 102 simultaneously presses against the rotary handle 114, preventing the rotary handle 114 from loosening during flight. The radial extrusion force of the locking mechanism and the concave cavity 116 of the cover plate 102 form a double fixation to the outer part of the first electronic module 104, preventing the rotary handle 114 from loosening. The extrusion force of the first wedge block 110, the second wedge block 111, and the floating wedge block 112 resists radial loosening caused by vibration. The contour of the concave cavity 116 restricts the axial movement of the first electronic module 104. The buffer pad 131 can further absorb vibration energy, preventing the first electronic module 104 from making hard contact with the cover plate 102, and protecting the first electronic module 104 and its internal data components.

[0064] After the flight is completed, the data inside the housing 100 needs to be transferred. First, the cover 102 is unlocked. The cover 102 is flipped in the opposite direction around the hinge 106 until it is fully open. The clamping part 124 is disengaged from the contact block 119. The spring 143 releases its elastic potential energy to push the guide post 118 to reset. The sensing tongue 120 is removed from the slot 122 of the sensor 121. The "installed in place" signal of the sensor 121 disappears, and the data transmission is interrupted in time to prevent data loss.

[0065] Grasp the rotating handle 114 and flip it in the opposite direction to drive the eccentric structures 113 on both sides to reset synchronously. The mounting shaft 109 releases the pressure on the second wedge block 111, and the radial pressure between the first wedge block 110, the second wedge block 111, and the floating wedge block 112 disappears. At this time, the rotating handle 114 can be directly used as the point of force application. Pulling it outward will drive the first electronic module 104 to be pulled out along the mounting cavity 1001 without the need for additional disassembly of parts or the use of a puller. The first electronic module 104 can be quickly removed for flight data reading.

[0066] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A chassis, characterized in that, include: The housing (100) has an internal mounting cavity (1001), the opening of which is located on the front hatch (101); The first electronic module (104) is housed in the mounting cavity (1001), and the first electronic module (104) has laterally extending bosses (105) on both sides. The locking mechanism includes locking components (108) disposed on both sides of the first electronic module (104), each of the locking components (108) having a mounting shaft (109); the mounting shaft (109) is mounted on a corresponding boss (105), and the mounting shaft (109) is provided with a first wedge block (110), a second wedge block (111) and an odd number of floating wedge blocks (112) located between the two in sequence, and adjacent wedge blocks are slidably engaged by a wedge surface (1121); the distal end of the mounting shaft (109) extends out of the first wedge block (110) and is hinged to an eccentric structure (113), and the side of the eccentric structure (113) is provided with a rotatable handle (114), and the extension ends of the two sets of rotatable handles (114) are connected and fixed by a connecting part (115); the limiting part at the distal end of the mounting shaft (109) abuts against the second wedge block (111) axially; A sensor bracket (117) is provided in the mounting cavity (1001), and the sensor bracket (117) is provided with an outwardly extended pre-tightened guide post (118). The far end of the guide post (118) is provided with a contact block (119), and the rear end of the contact block (119) is provided with a sensing tongue (120). The sensor (121) is mounted on the sensor bracket (117) and has a slot (122) for inserting the sensing tongue (120), and the slot (122) is provided with a sensing probe; An openable cover (102) is provided over the opening of the front door (101), and the inner side of the cover (102) has a cavity (116) for accommodating the extended portion of the first electronic module (104). A clamping member (124) is provided on the inside of the cover plate (102) and extends toward the mounting cavity (1001), and the distal end of the clamping member (124) is used to clamp the contact block (119) when the cover plate (102) is closed.

2. The chassis according to claim 1, characterized in that, The cam (1131) of the eccentric structure (113) is integrally formed with the rotary handle (114), and the two sets of rotary handles (114) are integrally formed through the connecting part (115).

3. The chassis according to claim 1, characterized in that, The cover plate (102) is hinged to the front hatch (101), and the free end of the cover plate (102) is provided with a locking assembly (103), which is used to lock the cover plate (102) and the front hatch (101) when the cover plate (102) is closed.

4. The chassis according to claim 3, characterized in that, The locking assembly (103) includes: A base plate (125) connected to the outer wall of the cover plate (102) has a protruding support column (126) on the base plate (125), and a knob (127) is supported on the support column (126) by a bearing (1261). The knob (127) has a radially outwardly extending limiting pin (128). The front hatch (101) is also provided with a limiting block (129), and the limiting block (129) is provided with a limiting groove (130) for the limiting pin (128) to be screwed in.

5. The chassis according to claim 4, characterized in that, Two limiting pins (128) are symmetrically arranged on the knob (127), and a limiting block (129) is provided on the front hatch (101) corresponding to each limiting pin (128). The bottom of the limiting groove (130) has a wedge surface that is inclined along the screwing direction of the limiting pin (128) so that the limiting pin (128) gradually generates a clamping force when screwed in; the end of the wedge surface is provided with a recess (1291) that matches the shape of the end of the limiting pin (128). The inner wall of the recess (1291) is fitted with the circumferential side of the limiting pin (128) to form an anti-loosening positioning structure; an elastic washer is sandwiched between the mating surfaces of the cover plate (102) and the front door (101), and the two sides of the elastic washer are fitted with the mating surfaces of the cover plate (102) and the front door (101) respectively; a buffer pad (131) is provided between the extended part of the first electronic module (104) and the inner wall of the cavity (116).

6. The chassis according to claim 5, characterized in that, The cavity (116) is a rectangular cavity, and pressure strips (132) are respectively provided on the upper and lower side walls of the rectangular cavity. The side walls of the pressure strips (132) limit the extension of the first electronic module (104).

7. The chassis according to claim 1, characterized in that, The first electronic module (104) has two stop protrusions (133) at its end that correspond to the eccentric structure (113). The stop protrusions (133) are provided with a clearance step (134) to make way for the eccentric structure (113). The side wall of the stop protrusions (133) away from the housing (100) is a second limiting surface (135).

8. The chassis according to claim 1, characterized in that, The distal end of the clamping member (124) is provided with an arc-shaped contact surface, which is used to fit and press against the contact block (119).

9. The chassis according to claim 1, characterized in that, The sensor bracket (117) includes two horizontal arms (138) that are opposite each other. The horizontal arms (138) are connected to the housing (100) by fasteners (139). The two horizontal arms (138) are connected by a straight wall (140). The straight wall (140) is provided with a through hole for the sensing tongue (120) to pass through. The two horizontal arms (138) are respectively provided with seat holes (142). A guide post (118) is installed in the seat hole (142). A spring (143) is sleeved on the guide post (118). The front end of the guide post (118) is connected to the connection hole (144) on the contact block (119). The sensor bracket (117) also includes a rearwardly extending mounting boss (145). A sensor (121) is installed on the mounting boss (145).

10. The chassis according to claim 1, characterized in that, The front end of the contact block (119) is provided with a column (146), and the head end of the column (146) is provided with a contact ball head (147).

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