Vehicle-mounted folding KVM assembly

Abstract

The invention, which relates to the technical field of control equipment, discloses a vehicle-mounted folding KVM assembly comprising a damping folding support, a supporting plate and a vehicle-mounted folding KVM. The damping folding support comprises a fixing frame used for being fixed to the wall face and a rotating frame which is rotationally connected with the fixing frame and can keep an angle, and the rotating frame at least has a vertical posture and a horizontal posture. The supporting plate is fixedly connected with the rotating frame so as to adjust the angle along with the rotating frame. The vehicle-mounted folding KVM comprises a keyboard box assembly and a display screen cover plate assembly rotationally connected with the keyboard box assembly. The keyboard box assembly is fixedly connected with the supporting plate so as to adjust the angle along with the supporting plate. Compared with the prior art, the vehicle-mounted folding KVM assembly has the advantages that limited space in a vehicle can be saved, shaking and noise caused by shaking are reduced, and the requirement of information safety for electromagnetic compatibility is met.

Description

Technical Field

[0001] The invention relates to the technical field of control equipment, and in particular to a vehicle-mounted folding KVM component. Background Art

[0002] With the development of the information industry and the popularization of electronic military equipment, more and more military vehicle-mounted system integrated equipment is being used. KVM, as an important information output and visualization device for controlling multiple hosts, is increasingly being used in military vehicles because it can realize centralized management of systems and networks, improve the work efficiency of system administrators, and save installation area.

[0003] Currently, the KVM installation method used in vehicle-mounted systems generally adopts desktop installation or cabinet installation. No matter which installation method is adopted, it will occupy too much limited space in the vehicle and waste space resources in the vehicle. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle-mounted folding KVM assembly to solve the problems existing in the above-mentioned related technologies and save limited space in the vehicle.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The invention discloses a vehicle-mounted folding KVM component, comprising:

[0007] A damping folding bracket, the damping folding bracket comprising a fixing bracket for fixing on a wall surface, and a rotating bracket rotatably connected to the fixing bracket and capable of maintaining an angle, the rotating bracket having at least a vertical posture and a horizontal posture;

[0008] A support plate, the support plate is fixedly connected to the rotating frame so as to adjust its own angle along with the rotating frame;

[0009] A vehicle-mounted foldable KVM comprises a keyboard box assembly and a display screen cover assembly rotatably connected to the keyboard box assembly; the keyboard box assembly is fixedly connected to the support plate to adjust its own angle along with the support plate.

[0010] Preferably, the vehicle-mounted folding KVM assembly also includes a bead buckle, a bead buckle mother and a buffer pad; the bead buckle is fixedly connected to the support plate, and the bead buckle mother and the buffer pad are used to be fixed on the wall; when the rotating frame rotates from a horizontal posture to a vertical posture, the bead buckle pushes away the two beads of the bead buckle mother and hits the buffer pad; when the rotating frame rotates from a vertical posture to a horizontal posture, the bead buckle mother applies resistance to the bead buckle.

[0011] Preferably, the hinge axis between the fixed frame and the rotating frame is a riveted pin, and the base shaft system transition fit is adopted between the riveted pin and the fixed frame, and between the riveted pin and the rotating frame, with a fit tolerance of K7 / h6; the damping folding bracket also includes two supporting oblique rods, the first ends of the two supporting oblique rods are connected by a first connecting rod, and the fixed frame is clamped from both sides respectively, and the other ends of the two supporting oblique rods are connected by a second connecting rod, and the rotating frame is clamped from both sides respectively, and damping washers are arranged between the first end of the supporting oblique rod and the fixed frame, and between the second end of the supporting oblique rod and the rotating frame.

[0012] Preferably, a side of the support plate used to install the keyboard box assembly is provided with a concave receiving groove and a convex desktop patch; the receiving groove is for the keyboard box assembly to be embedded; the sum of the depth of the receiving groove and the height of the desktop patch is equal to the thickness of the vehicle-mounted folding KVM after being folded, so that after the vehicle-mounted folding KVM is folded, the display screen cover assembly is flush with the desktop patch.

[0013] Preferably, a screen buffer pad for limiting the maximum opening angle of the display cover assembly is provided on the desktop patch block; the display cover assembly is configured to completely cover a first area of ​​the keyboard box assembly in a folded state, and to partially cover a second area of ​​the support plate in a folded state; a support pin is provided in the second area, and a pin pit for the support pin to extend into is provided on one side of the support plate for mounting the keyboard box assembly.

[0014] Preferably, a pin buffer pad for contacting the support pin is provided in the pin pit.

[0015] Preferably, the vehicle-mounted folding KVM assembly also includes a screen lock assembly for mechanically locking and unlocking the display screen cover assembly and the support plate; the screen lock assembly includes a pendulum block, a rotating shaft, a spring, a card block and a card plate; the pendulum block includes a first part and a second part that are fixedly connected and angled with each other; the first part is rotatably connected to the second area through the rotating shaft so that the pendulum block can swing; the card block is arranged on the side of the second part facing the rotating shaft, the card plate is arranged on the support plate, a card slot is arranged on the card plate, and the card block is used to engage with the card slot; the first end of the spring is connected to the first part and is located on the side of the rotating shaft away from the second part, and the second end of the spring is used to detachably abut the support plate to apply a torque to the pendulum block so that the card block is stuck in the card slot; a pressing area is arranged on the side of the first part away from the spring so that a torque is applied to the pendulum block by pressing the pressing area so that the card block is disengaged from the card slot.

[0016] Preferably, the screen lock assembly also includes a pressure cover, which is detachably fixedly connected to the display screen cover assembly; the rotating shaft is arranged between the pressure cover and the display screen cover assembly, and grooves corresponding to the rotating shaft are arranged on the pressure cover and the display screen cover assembly, and the rotating shaft is embedded in the groove and can rotate in the groove.

[0017] Preferably, the display screen cover assembly and the support plate have rounded corners.

[0018] Preferably, at least some of the components are provided with an electromagnetic protection structure.

[0019] Compared with the related art, the present invention has achieved the following technical effects:

[0020] The support plate is horizontally unfolded when in use and vertically folded when not in use, which can effectively reduce the space in the vehicle occupied by the vehicle-mounted folding KVM. In the preferred embodiment of the present invention, mechanical limiters are set at the unfolding and folding positions of the vehicle-mounted folding KVM to solve the shaking and noise caused by the shaking of the vehicle-mounted folding KVM during the vehicle maneuvering process. In the preferred embodiment of the present invention, at least some components are provided with electromagnetic protection structures to meet the requirements of information security for electromagnetic compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the vertical folding of the vehicle-mounted folding KVM;

[0023] Figure 2 This is a schematic diagram of the horizontal unfolding of the vehicle-mounted folding KVM;

[0024] Figure 3a for Figure 2 Schematic diagram of the structure of the middle part;

[0025] Figure 3b This is the schematic diagram of the screen lock component;

[0026] Figure 4 Open the schematic for the display cover assembly;

[0027] Figure 5 This is a schematic diagram of the unfolding of the damping folding bracket;

[0028] Figure 6 This is a schematic diagram of the limit position of the damping folding bracket after unfolding;

[0029] Figure 7 It is a schematic diagram of the folding of the damping folding bracket;

[0030] Figure 8 This is a schematic diagram of the vertical folding and locking of the vehicle-mounted folding KVM;

[0031] Fig. 9 A schematic diagram of the positional relationship between the bead buckle, the bead buckle and the buffer pad;

[0032] Fig.10 It is a schematic diagram of the positional relationship between the damping folding bracket and the support plate;

[0033] Fig.11 This is a schematic diagram of a vehicle-mounted folding KVM;

[0034] Fig.12 An exploded view of the display cover assembly;

[0035] Fig.13 It is a schematic diagram of the wire-passing structure;

[0036] Fig.14 An exploded view of the keyboard case assembly;

[0037] Fig.15 Schematic diagram of filling the gap with a solid strip of aluminum-coated silver conductive rubber.

[0038] In the figure: 1-mounting table; 2-car folding KVM; 3-damping folding bracket; 4-bead buckle; 5-swing block; 6-bead buckle; 7-pin pit; 8-keyboard box assembly; 9-display cover assembly; 10-support pin; 11-pressure cover; 12-tower spring; 13-card plate; 14-fixing frame; 15-damper; 16-rivet pin; 17-support diagonal rod; 18-release handle; 19-rotating frame; 20-torsion spring; 21-damping washer; 22-female buckle shell; 23-buffer pad; 24-first spring; 25-adjusting nut; 26-bead; 27-pin buffer pad; 28-screen buffer pad; 29-desktop patch; 30-accommodation groove; 3 1- support plate; 32- display screen back cover; 33- display screen front cover; 34- shielding glass; 35- damping shaft; 36- LCD screen; 37- glass pressure frame; 38- male wire block; 39- female wire block; 40- shielding patch block; 41- keyboard box cover; 42- keyboard light PCB; 43- filter; 44- aviation connector; 45- grounding column; 46- 6-key 1 light PCB; 47- 6-key 1 light PCB shielding mounting plate; 48- keyboard pressure plate; 49- keyboard box body; 50- touchpad PCB; 51- keypad PCB; 52- touchpad shielding mounting plate; 53- groove structure; 54- boss structure; 55- conductive rubber strip. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The purpose of the present invention is to provide a vehicle-mounted folding KVM assembly to solve the problems existing in the above-mentioned related technologies and save limited space in the vehicle.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Reference Figure 1 to Figure 15 This embodiment provides a vehicle-mounted folding KVM assembly, including a damping folding bracket 3, a support plate 31 and a vehicle-mounted folding KVM2.

[0043] The damping folding bracket 3 includes a fixed frame 14 for fixing on a wall, and a rotating frame 19 rotatably connected to the fixed frame 14 and capable of maintaining an angle, and the rotating frame 19 has at least a vertical posture and a horizontal posture. The support plate 31 is fixedly connected to the rotating frame 19 to adjust its own angle along with the rotating frame 19. The vehicle-mounted folding KVM2 includes a keyboard box assembly 8, and a display screen cover assembly 9 rotatably connected to the keyboard box assembly 8 (through a damping shaft 35). The keyboard box assembly 8 is fixedly connected to the support plate 31 to adjust its own angle along with the support plate 31. The vehicle-mounted folding KVM2 adopts a manual mechanical flipping structure, and the display screen cover assembly 9 can be stably parked when flipped up to any angle, and the stable parking is achieved by the damping shaft 35.

[0044] The working principle of the vehicle-mounted folding KVM assembly of this embodiment is as follows:

[0045] When the vehicle-mounted foldable KVM2 is not in use, the vehicle-mounted foldable KVM2 is folded, and then the support plate 31 is rotated to a vertical position. At this time, the support plate 31 and the vehicle-mounted foldable KVM2 are both attached to the wall in a vertical position, thereby reducing the floor space and providing more space for activities in the vehicle. When the vehicle-mounted foldable KVM2 needs to be used, the support plate 31 is first rotated to a horizontal position, and then the display screen cover assembly 9 is rotated to an open angle, and the vehicle-mounted foldable KVM2 can be used.

[0046] During installation, the damping folding bracket 3 is first fixed to the wall, and then the support plate 31 is fixed to the damping folding bracket 3, and then the keyboard box assembly 8 is fixed to the support plate 31. When the vehicle-mounted folding KVM 2 needs to be repaired, the vehicle-mounted folding KVM 2 can be directly removed without removing the damping folding bracket 3, which is simple and convenient.

[0047] As a possible example, in this embodiment, the vehicle-mounted folding KVM assembly further includes a bead buckle 6, a bead buckle 4 and a buffer pad 23. The bead buckle 6 is fixedly connected to the support plate 31, and the bead buckle 4 and the buffer pad 23 are used to be fixed on the wall. When the rotating frame 19 rotates from a horizontal posture to a vertical posture, the bead buckle 6 pushes away the two beads 26 of the bead buckle 4 and hits the buffer pad 23. When the rotating frame 19 rotates from a vertical posture to a horizontal posture, the bead buckle 4 applies resistance to the bead buckle 6.

[0048] When the support plate 31 rotates to a vertical position, the process of the bead buckle 6 pushing away the bead 26 can slow down the rotation speed of the support plate 31 and play a buffering role. Afterwards, the bead buckle 6 collides with the buffer pad 23, but under the limit of the bead 26, the bead buckle 6 cannot push the bead 26 away in the reverse direction, thereby limiting the support plate 31 to a vertical position. In the above process, the bead buckle 4 and the buffer pad 23 both play a role in buffering and absorbing energy, the bead buckle 4 also plays a role in limiting, and the buffer pad 23 also plays a role in reducing impact noise.

[0049] The bead buckle 4 includes two buckle shells 22, in which a bead 26 and a first spring 24 are arranged. Through holes are arranged at the opposite ends of the two buckle shells 22, and the diameter of the through hole is smaller than the diameter of the bead 26. The first spring 24 provides elastic force to push the bead 26 toward the through hole, so that the bead 26 partially protrudes out of the through hole. When the bead buckle 6 passes between the two beads 26, the beads 26 on both sides are pushed into the buckle shell 22. The width of the end of the bead buckle 6 is greater than the width of its root, so that after the end moves between the bead 26 and the buffer pad 23, it can be locked by the bead 26.

[0050] Exemplarily, the female buckle shell 22 is threadedly connected with an adjusting nut 25, and one end of the adjusting nut 25 is against the first spring 24. By rotating the adjusting nut 25, the pre-compression amount of the first spring 24 can be changed, thereby adjusting the resistance applied by the collision bead 26 to the collision bead buckle 6.

[0051] Exemplarily, the buffer pad 23 is a silicone pad.

[0052] The damping folding bracket 3 is a prior art, generally made of 304 stainless steel, and can support a large weight. Because it has damping, it will not fall too quickly when folded vertically. However, the existing damping folding bracket 3 often has problems such as easy shaking and easy noise, and the reason is that the gap between the components is large. In this embodiment, the above problems are solved by adjusting the matching tolerance and adding washers.

[0053] Specifically, in this embodiment, the hinge axis of the fixed frame 14 and the rotating frame 19 is a riveted pin 16, and the riveted pin 16 and the fixed frame 14, and the riveted pin 16 and the rotating frame 19 are both adapted to be transitionally matched with a base axis system, and the matching tolerance is K7 / h6, which is a matching with no gap on average (about 30% interference). Therefore, compared with the prior art in which the hinge axis of the damping folding bracket 3 and the corresponding hole have a large gap, this embodiment reduces the overall shaking by reducing the gap, thereby reducing the noise.

[0054] The damping folding bracket 3 also includes two supporting oblique rods 17, the first ends of the two supporting oblique rods 17 are connected by a first connecting rod, and clamp the fixed frame 14 from both sides respectively, the other ends of the two supporting oblique rods 17 are connected by a second connecting rod, and clamp the rotating frame 19 from both sides respectively, and damping washers 21 are arranged between the first ends of the supporting oblique rods 17 and the fixed frame 14, and between the second ends of the supporting oblique rods 17 and the rotating frame 19. The damping washers 21 are used to fill the gaps between the supporting oblique rods 17 and the fixed frame 14, and the gaps between the supporting oblique rods 17 and the rotating frame 19, so as to avoid collision and reduce noise.

[0055] At the same time, the above structural improvement can also increase the deformation damping of the damping folding bracket 3 .

[0056] Exemplarily, the damping washer 21 is a nylon washer.

[0057] Generally, after the vehicle-mounted foldable KVM2 is placed on the support plate 31, the position of the vehicle-mounted foldable KVM2 protrudes upward compared to other positions on the support plate 31, and the overall unevenness will limit other uses of the support plate 31 such as writing and dining. In this embodiment, by specifically designing the shape of the support plate 31, the upper surface of the vehicle-mounted foldable KVM2 is leveled with the upper surfaces of other positions of the support plate 31.

[0058] Specifically, in this embodiment, a side of the support plate 31 for mounting the keyboard box assembly 8 is provided with a concave receiving groove 30 and a convex desktop patch 29. The receiving groove 30 is for the keyboard box assembly 8 to be embedded. The sum of the depth of the receiving groove 30 and the height of the desktop patch 29 is equal to the thickness of the vehicle-mounted folding KVM2 after folding, so that the display screen cover assembly 9 is flush with the desktop patch 29 after the vehicle-mounted folding KVM2 is folded.

[0059] At the same time, the desktop patch 29 can cover the wire outlet position at the rear of the vehicle-mounted folding KVM2 and fix the wire harness.

[0060] The display screen cover assembly 9 may make noise due to collision during the swinging process. In order to solve this problem, in this embodiment, a screen buffer pad 28 for limiting the maximum opening angle of the display screen cover assembly 9 is provided on the desktop patch 29. The display screen cover assembly 9 is provided with a first area for completely covering the keyboard box assembly 8 in the folded state, and a second area for partially covering the support plate 31 in the folded state. The second area is provided with a support pin 10, and a pin pit 7 for the support pin 10 to extend into is provided on one side of the support plate 31 for mounting the keyboard box assembly 8.

[0061] After the vehicle-mounted foldable KVM2 is folded, a heavy object is placed on the display screen cover assembly 9, and the force will be transmitted to the support plate 31 through the support pin 10 to prevent the keyboard box assembly 8 from being compressed.

[0062] As a possible example, in this embodiment, a pin buffer pad 27 for contacting the support pin 10 is provided in the pin pit 7. Exemplarily, the screen buffer pad 28 is a rubber pad, and the pin buffer pad 27 is a silicone pad.

[0063] In order to prevent the display screen cover assembly 9 from opening due to the vibration of the vehicle, in this embodiment, the vehicle-mounted folding KVM assembly also includes a screen lock assembly for mechanically locking and unlocking the display screen cover assembly 9 and the support plate 31.

[0064] The screen lock assembly includes a pendulum block 5, a rotating shaft, a second spring, a card block and a card plate 13. The pendulum block 5 includes a first part and a second part that are fixedly connected and angled to each other. The first part is rotatably connected to the second area through a rotating shaft so that the pendulum block 5 can swing. The card block is arranged on the side of the second part facing the rotating shaft, and the card plate 13 is arranged on the support plate 31. The card plate 13 is provided with a card slot, and the card block is used to engage with the card slot. The first end of the second spring is connected to the first part and is located on the side of the rotating shaft away from the second part. The second end of the second spring is used to detachably abut the support plate 31 to apply torque to the pendulum block 5 so that the card block is stuck in the card slot. A pressing area is arranged on the side of the first part away from the second spring so that a torque is applied to the pendulum block 5 by pressing the pressing area so that the card block is disengaged from the card slot.

[0065] When locking the display cover assembly 9, the card block first contacts the card plate 13, and then the swing block 5 swings to make the card block avoid the card plate 13. When the card block slides to the position of the card slot, the second spring pushes the swing block 5 to rotate, so that the card block is stuck in the card slot, and the mechanical locking of the display cover assembly 9 can be achieved. When unlocking the display cover assembly 9, the operator presses the pressing area on the side of the first part away from the second spring, the second spring is compressed, the card block is separated from the card slot, and the pressing state of the pressing area is maintained. The display cover assembly 9 is rotated to unlock the display cover assembly 9.

[0066] Because the screen lock assembly requires the movable margin of the display screen cover assembly 9 to achieve locking and unlocking, the pin buffer pad 27 can provide this deformation margin, so that when the display screen cover assembly 9 is pressed down with great force, the support pin 10 can continue to move down a certain distance by compressing the pin buffer pad 27 without generating loud noise due to collision.

[0067] Exemplarily, the second spring is a tower spring 12 .

[0068] In order to facilitate the installation of the rotating shaft, in this embodiment, the screen lock assembly further includes a pressure cover 11, which is detachably fixedly connected to the display screen cover assembly 9. The rotating shaft is arranged between the pressure cover 11 and the display screen cover assembly 9, and grooves corresponding to the rotating shaft are arranged on the pressure cover 11 and the display screen cover assembly 9, and the rotating shaft is embedded in the groove and can rotate in the groove.

[0069] In order to expand the activity space in the vehicle and prevent the occupants from being injured due to collision with sharp parts, in this embodiment, the display screen cover assembly 9 and the support plate 31 are both rounded.

[0070] As a possible example, in this embodiment, at least some components are provided with electromagnetic protection structures to meet the seven requirements of the Army Ground in GJB151B-2013 "Requirements and Measurements of Electromagnetic Emissions and Sensitivity of Military Equipment and Subsystems", ensure information security, and prevent electromagnetic leakage of equipment and interference from external electromagnetic waves.

[0071] Specifically, the electromagnetic protection structure may include the following types:

[0072] 1. At least some parts of the vehicle-mounted folding KVM2 are made of aluminum alloy and subjected to conductive oxidation treatment to prevent oxidation in the air and affect the conductivity.

[0073] 2. For the position where the boss structure 54 and the groove structure 53 match each other, a conductive rubber strip 55 (such as a solid aluminum-silver-plated conductive rubber strip) is installed in the groove to achieve conductive overlap at the gap position.

[0074] 3. The external interface on the box body of the keyboard box assembly 8 adopts an aviation connector 44 with electromagnetic protection, and the cable connected to the aviation connector 44 uses an electromagnetic shielding cable.

[0075] 4. A filter 43 is provided inside the keyboard box of the keyboard box assembly 8 to filter the current provided by the power supply, thereby significantly reducing the level of conducted interference.

[0076] 5. The display screen window adopts shielding glass 34, and the conductive wire mesh on the shielding glass 34 is conductively overlapped with the adjacent metal structural parts.

[0077] 6. Lay the power line and signal line separately to prevent interference problems caused by crossing the power line and signal line.

[0078] 7. A grounding column 45 is designed on the keyboard box assembly 8. The PCBs, modules and brackets of the vehicle-mounted folding KVM2 are grounded after being overlapped, and the grounding end of the power supply line and the shielding layer of the external shielded cable are grounded. The grounding process can more effectively suppress the external electromagnetic field and protect the safety of equipment and personnel.

[0079] 8. The connection line between the keyboard box assembly 8 and the display cover assembly passes through the wire passing structure, which adopts a split structure, including a male wire passing block 38 and a female wire passing block 39 with concave and convex matching. One end of the wire passing structure extends into the display assembly, and the other end is conductively overlapped with the keyboard box assembly 8, so that the wire passing hole of the wire passing structure becomes a waveguide hole with a turn.

[0080] As a possible example, in this embodiment, the wall surface is provided by the mounting platform 1, and the fixed connection may be a detachable connection via screws.

[0081] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A vehicle-mounted folding KVM assembly, characterized in that: include: A damping folding bracket, the damping folding bracket comprising a fixing bracket for fixing on a wall surface, and a rotating bracket rotatably connected to the fixing bracket and capable of maintaining an angle, the rotating bracket having at least a vertical posture and a horizontal posture; A support plate, the support plate is fixedly connected to the rotating frame so as to adjust its own angle along with the rotating frame; A vehicle-mounted foldable KVM comprises a keyboard box assembly and a display screen cover assembly rotatably connected to the keyboard box assembly; the keyboard box assembly is fixedly connected to the support plate to adjust its own angle along with the support plate.

2. The vehicle-mounted folding KVM assembly according to claim 1, characterized in that: It also includes a bead buckle, a bead buckle and a buffer pad; the bead buckle is fixedly connected to the support plate, and the bead buckle and the buffer pad are used to be fixed on the wall; when the rotating frame rotates from a horizontal posture to a vertical posture, the bead buckle pushes away the two beads of the bead buckle and hits the buffer pad; when the rotating frame rotates from a vertical posture to a horizontal posture, the bead buckle applies resistance to the bead buckle.

3. The vehicle-mounted folding KVM assembly according to claim 1, characterized in that: The hinge axis between the fixed frame and the rotating frame is a riveted pin, and the base shaft system transition fit is adopted between the riveted pin and the fixed frame, and between the riveted pin and the rotating frame, with a fit tolerance of K7 / h6; the damping folding bracket also includes two supporting oblique rods, the first ends of the two supporting oblique rods are connected by a first connecting rod, and the fixed frame is clamped from both sides respectively, and the other ends of the two supporting oblique rods are connected by a second connecting rod, and the rotating frame is clamped from both sides respectively, and damping washers are arranged between the first end of the supporting oblique rod and the fixed frame, and between the second end of the supporting oblique rod and the rotating frame.

4. The vehicle-mounted folding KVM assembly according to claim 1, characterized in that: The side of the support plate used to install the keyboard box assembly is provided with a concave receiving groove and a convex desktop patch; the keyboard box assembly is embedded in the receiving groove; the sum of the depth of the receiving groove and the height of the desktop patch is equal to the thickness of the vehicle-mounted folding KVM after being folded, so that after the vehicle-mounted folding KVM is folded, the display screen cover assembly is flush with the desktop patch.

5. The vehicle-mounted folding KVM assembly according to claim 4, characterized in that: A screen buffer pad for limiting the maximum opening angle of the display cover assembly is provided on the desktop patch block; the display cover assembly is configured to completely cover a first area of ​​the keyboard box assembly in a folded state, and to partially cover a second area of ​​the support plate in a folded state; a support pin is provided in the second area, and a pin pit for the support pin to extend into is provided on one side of the support plate for mounting the keyboard box assembly.

6. The vehicle-mounted folding KVM assembly according to claim 5, characterized in that: A pin buffer pad for contacting the support pin is arranged in the pin pit.

7. The vehicle-mounted folding KVM assembly according to claim 5, characterized in that: It also includes a screen lock assembly for mechanically locking and unlocking the display screen cover assembly and the support plate; the screen lock assembly includes a pendulum block, a rotating shaft, a spring, a card block and a card plate; the pendulum block includes a first part and a second part that are fixedly connected and angled with each other; the first part is rotatably connected to the second area through the rotating shaft so that the pendulum block can swing; the card block is arranged on the side of the second part facing the rotating shaft, the card plate is arranged on the support plate, a card slot is arranged on the card plate, and the card block is used to engage with the card slot; the first end of the spring is connected to the first part and is located on the side of the rotating shaft away from the second part, and the second end of the spring is used to detachably abut the support plate to apply torque to the pendulum block so that the card block is stuck in the card slot; a pressing area is arranged on the side of the first part away from the spring, so that a torque is applied to the pendulum block by pressing the pressing area so that the card block is separated from the card slot.

8. The vehicle-mounted folding KVM assembly according to claim 7, characterized in that: The screen lock assembly also includes a pressure cover, which is detachably fixedly connected to the display screen cover assembly; the rotating shaft is arranged between the pressure cover and the display screen cover assembly, and grooves corresponding to the rotating shaft are arranged on the pressure cover and the display screen cover assembly, and the rotating shaft is embedded in the groove and can rotate in the groove.

9. The vehicle-mounted folding KVM assembly according to claim 1, characterized in that: The display screen cover assembly and the support plate have rounded corners.

10. The vehicle-mounted folding KVM assembly according to claim 1, characterized in that: At least some of the components are provided with an electromagnetic protection structure.

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