A multi-angle fixing device and adjustment method for a military vehicle display screen

By using a sliding combination of mounting bracket and sliding sleeve in military vehicles, combining the rotary bracket and locking mechanism, the multi-angle adjustment and fixing of the display screen is achieved, which solves the problem that cannot meet the vision requirements of multiple seats in the prior art and saves space and reduce costs, improve combat efficiency and prevent display flips.

CN112693403BActive Publication Date: 2024-12-13DONGFENG OFF ROAD VEHICLE CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202011602968.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-12-29
Publication Date
2024-12-13
Estimated Expiration
2040-12-29

AI Technical Summary

Technical Problem

The existing fixed military vehicle display screen structure cannot meet the vision needs of multiple seat personnel, and cannot achieve multiple degrees of freedom rotation and locking, which increases the waste of space inside the car and the cost of the whole vehicle.

Method used

The sliding combination of the mounting bracket and the sliding sleeve is combined with the rotating bracket and the locking mechanism to realize multi-angle adjustment and fixation of the display screen, meet different field of view requirements, and the overall sliding and rotation of the display screen is achieved through the rotating pin and rotation shaft.

Benefits of technology

It saves space inside the car, reduces the cost of the whole vehicle, improves combat efficiency, ensures that the main and co-drivers can easily view and issue commands, and prevents the display from flipping due to driving vibration.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN112693403B_ABST
    Figure CN112693403B_ABST
Patent Text Reader

Abstract

The invention discloses a multi-angle fixing device and an adjustment method for a display screen of a military vehicle. The device comprises a mounting bracket (1), and a sliding sleeve (2) slidably connected thereto, a rotating bracket (3) being rotatably connected to the sliding sleeve (2); a display device (5) being rotatably connected to the rotating bracket (3); a sliding rod (11) on the mounting bracket (1) being slidably connected to the sliding sleeve (2), one or more sliding rails (111) being provided on the sliding rod (11), and the sliding rails (111) being contact-connected to the sliding sleeve (2); a locking mechanism (4) and a rotating shaft (54) being respectively provided on the rotating bracket (3) and the display device (5), so that the display screen (51) can adjust the tilt angle around the rotating shaft (54), so as to meet the different visual field requirements of the main and co-drivers, occupy a small area, and is conducive to the later vehicle modification, thereby solving the problem that the vehicle-mounted screen cannot meet the use requirements of the main and co-drivers at the same time.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of military vehicle onboard display screen fixing structures, and more specifically, to a military vehicle display screen multi-angle fixing device and an adjustment method. Background Art

[0002] With the development of information technology, the degree of vehicle informatization is getting higher and higher. In the field of military off-road vehicles, the degree of informatization is also gradually improving. As an information equipment terminal, the important position of the display screen is self-evident. At present, the main functions of the military vehicle display screen are vehicle information and fault diagnosis, reversing image terminal, infrared display terminal, Beidou navigation terminal, vehicle formation interconnection, etc. It is usually arranged near the driver's side and is only for the driver to use. When the commander in the co-pilot seat needs to issue navigation and command orders, he often cannot operate directly and needs to be completed through the driver's operation, which affects both driving safety and the efficiency of command issuance. It is also difficult for the commander to grasp real-time information and the combat efficiency is low. In order to solve the problem of difficulty in the commander in the co-pilot position to issue combat orders, there is also a reinstalled information display terminal on the front dashboard of the co-pilot seat, but this display terminal with a single function not only increases the cost of the whole vehicle but also causes difficulties for the subsequent modification of the whole vehicle.

[0003] The existing technology has the following disadvantages: (1) Although the screen angle can be changed, it cannot be moved to different driving positions, and cannot meet the viewing needs of people in multiple seats. Installing multiple screens increases costs and wastes space in the car; (2) It is impossible to achieve rotation and locking with multiple degrees of freedom, and cannot meet the viewing needs of users at different postures and heights. Summary of the invention

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a multi-angle fixing device and adjustment method for a military vehicle display screen. The device adopts a mounting bracket and a sliding sleeve to slide together to form a bottom main bracket, which can slide between the main and co-pilot seats to meet the field of view requirements of viewing the display screen at different positions in the vehicle. A supporting sleeve is arranged on the sliding sleeve, and is connected to the rotating bracket through a rotating pin so that it can rotate around the rotating pin. Furthermore, a locking mechanism and a rotating shaft are respectively arranged on the rotating bracket and the display device, so that the display screen can further adjust the tilt angle to meet the different field of view requirements of the main and co-pilot seats. It occupies a small area, is conducive to later vehicle modification, saves costs, and has high combat efficiency.

[0005] In order to achieve the above object, according to one aspect of the present invention, a multi-angle fixing device for a military vehicle display screen is provided, comprising:

[0006] A mounting bracket and a sliding sleeve slidably connected thereto, wherein the sliding sleeve is rotatably connected to a rotating bracket;

[0007] The display device is rotatably connected to the rotating bracket, and a locking mechanism is provided at the connection;

[0008] The mounting bracket comprises a sliding rod, the sliding rod is slidably connected to the sliding sleeve, the sliding rod is provided with one or more sliding rails, and the sliding rails are in contact with the sliding sleeve;

[0009] The sliding sleeve comprises an upper sleeve, a locking bolt, a lower sleeve, a second bolt and a first threaded sleeve;

[0010] The upper sleeve and the lower sleeve are fixedly connected by the second bolt, and both are sleeved on the sliding rod and slidably connected thereto;

[0011] The first threaded sleeve is through-connected on the upper sleeve, the locking bolt is threadedly connected to the first threaded sleeve, and the locking bolt is contact-connected to the slide rail.

[0012] Furthermore, the rotating bracket includes a rotating pin, a supporting sleeve and a rotating frame;

[0013] The supporting sleeve is fixed on the upper sleeve through the supporting sleeve;

[0014] The two ends of the rotating frame are provided with clamping grooves, and the bottom of the rotating frame is provided with a rotating pin rivet hole, the rivet hole is riveted and fixed to the rotating pin, and the rotating pin is rotatably connected to the supporting sleeve.

[0015] Further, the rotating bracket includes an adjusting bolt and a second threaded sleeve;

[0016] The second threaded sleeve is fixed on the upper sleeve through the second threaded sleeve, and the inner thread of the second threaded sleeve is connected with an adjusting bolt.

[0017] Further, the display device includes a display screen, a transition plate, a third bolt and a rotating shaft;

[0018] One or more transition plates are fixed to both sides of the display screen by third bolts;

[0019] The transition plate is provided with a rotation shaft vertically on the upper plate surface, and the rotation shaft is rotatably connected to the clamping slot.

[0020] Further, the locking mechanism includes a fastening handle and an elastic gasket;

[0021] The fastening handle is threadedly connected to the rotating shaft;

[0022] The elastic gasket is arranged between the fixed handle and the transition plate, and is in contact with and connected to the two.

[0023] Furthermore, the rotating frame is also provided with a limiting hole through which a limiting column is fixed;

[0024] The transition plate is provided with a sliding groove, and the limiting column is slidably connected with the sliding groove.

[0025] Further, the mounting bracket includes a fixing plate and a first bolt;

[0026] The fixing plate is fixed to both ends of the sliding rod, and the first bolt passes through the fixing plate to fix it.

[0027] Furthermore, a rotation groove is provided on the surface of the rotation pin shaft around the axis, and the adjusting bolt is in contact with and connected to the rotation groove.

[0028] According to another aspect of the present invention, a method for fixing a display screen at multiple angles on a military vehicle is provided, which is implemented by using the multi-angle fixing device for a display screen at multiple angles on a military vehicle, and comprises the following steps:

[0029] S100: screwing the locking bolt outward from the first threaded sleeve to make it disengage from the bottom surface of the slide rail, and then sliding the sliding sleeve along the sliding rod to adjust its position;

[0030] S200: After the rotating bracket follows the sliding sleeve to adjust its position, the locking bolt is screwed into the first threaded sleeve so that it is in close contact with the bottom surface of the slide rail, thereby fixing the display device at a position of the sliding rod that is convenient for observation;

[0031] S300: screwing the adjusting bolt outward from the second threaded sleeve, so that the end of the adjusting bolt is out of contact with the bottom of the rotating groove. At this time, the rotating bracket can be rotated around the central axis of the rotating pin. The rotating pin is supported in the supporting sleeve. After being rotated to a desired position, the second threaded sleeve is screwed inward until the end of the adjusting bolt is in close contact with the bottom of the rotating groove, thereby fixing the rotating bracket and the display device.

[0032] S400: Rotate the fastening handle outward from the end of the rotating shaft so that the inner surface of the fastening handle is out of contact with the elastic gasket, and then rotate the display screen around the rotating shaft to adjust its tilt angle. After the adjustment is completed, rotate the fastening handle in the direction of the elastic gasket until its inner surface is in close contact with the elastic gasket, thereby achieving the effect of locking the display screen at a fixed tilt angle.

[0033] Furthermore, the S400 also includes: the limiting column is slidably connected in the sliding groove, and after the fastening handle is rotated outward, the rotation angle of the display device is limited by the sliding groove, and when the sliding groove is rotated until its end contacts the limiting column, the display device can no longer rotate.

[0034] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0035] 1. The present invention provides a multi-angle fixing device and adjustment method for a military vehicle display screen, which adopts a mounting bracket and a sliding sleeve to slide together as the bottom bracket of the display device, and supports the display device to slide or lock along the mounting bracket as a whole. There is no need to set up multiple display devices for people in different seats to view, which saves space in the vehicle, saves costs, is conducive to the later modification of the vehicle, and solves the problem that both the driver and the co-driver's cabin in the military vehicle need to view display information and issue instructions.

[0036] 2. The present invention provides a multi-angle fixing device and adjustment method for a military vehicle display screen, which adopts a rotating bracket that is rotatably connected to a support sleeve through a rotating shaft pin at the bottom, and is also rotatably connected to the rotating shafts on both sides of the display device through the card slots at both ends of the rotating bracket. The bracket can be locked at a desired angle through adjusting bolts and a locking mechanism, thereby solving the problem of inconvenient viewing of the display screen at different angles.

[0037] 3. The present invention provides a multi-angle fixing device and adjustment method for a military vehicle display screen, which adopts a sliding connection method between a sliding groove on a rotating bracket and a limiting column on a display device to limit the rotation angle of the screen and prevent the screen from flipping due to driving vibration when the display device is not fixed, thereby affecting the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The structure of a multi-angle fixing device and adjustment method for a military vehicle display screen according to an embodiment of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 2 The structure of a multi-angle fixing device and adjustment method for a military vehicle display screen according to an embodiment of the present invention is shown in FIG. Figure 2 ;

[0040] Figure 3 This is a schematic structural diagram of a mounting bracket and a sliding sleeve of a multi-angle fixing device and adjustment method for a display screen on a military vehicle according to an embodiment of the present invention;

[0041] Figure 4 This is a structural schematic diagram of a sliding sleeve of a multi-angle fixing device and adjustment method for a display screen on a military vehicle according to an embodiment of the present invention;

[0042] Figure 5 The structure of the rotating bracket, locking mechanism and display device of a multi-angle fixing device and adjustment method of a military vehicle display screen according to an embodiment of the present invention is schematically shown. Figure 1 ;

[0043] Figure 6The structure of the rotating bracket, locking mechanism and display device of a multi-angle fixing device and adjustment method of a military vehicle display screen according to an embodiment of the present invention is schematically shown. Figure 2 ;

[0044] Figure 7 This is a structural schematic diagram of a rotating bracket of a multi-angle fixing device and adjustment method for a display screen on a military vehicle according to an embodiment of the present invention;

[0045] Figure 8 The present invention is a flowchart of an adjustment method of a multi-angle fixing device for a military vehicle display screen according to an embodiment of the present invention.

[0046] In all the drawings, the same figure numbers represent the same technical features, specifically: 1-mounting bracket, 2-sliding sleeve, 3-rotating bracket, 4-locking mechanism, 5-display device, 6-cockpit beam, 11-sliding rod, 12-fixed plate, 13-first bolt, 21-lower sleeve, 22-locking bolt, 23-upper sleeve, 24-second bolt, 25-first threaded sleeve, 31-rotating pin, 32-support sleeve, 33-adjusting bolt, 34-second threaded sleeve, 35-rotating frame, 41-fastening handle, 42-elastic gasket, 43-limiting column, 51-display screen, 52-transition plate, 53-third bolt, 54-rotating shaft, 111-slide rail, 311-rotating groove, 351-rotating pin rivet hole, 352-limiting hole, 353-card slot, 521-sliding groove. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] like Figure 1-Figure 8As shown, the present invention provides a multi-angle fixing device and adjustment method for a military vehicle display screen, which includes a mounting bracket 1 and a rotating bracket 3 for fixing and supporting. The rotating bracket 3 is used to fix and support a display device 5, and is also provided with a locking mechanism 4, which can be rotated to multiple angles for fixing. The driver can adjust the angle at any time for convenient viewing. Further, the rotating bracket 3 is fixed on a sliding sleeve 2, and the sliding sleeve 2 is slidably connected to the mounting bracket 1. Preferably, the mounting bracket 1 is transversely installed on a cockpit crossbeam 6, and the driver's seat and the co-pilot seat can slide the sliding sleeve 2 along the mounting bracket 1 when they need to view the screen. The device adopts the rotating bracket 3 to achieve the purpose of rotating the screen to multiple angles, and cooperates with the transversely installed mounting bracket 1 to enable it to have a multi-angle viewing function, thereby solving the problem that it is difficult for the commander at the co-pilot position to operate the display screen to issue combat orders, reducing the cost of the entire vehicle and saving space in the vehicle.

[0049] Furthermore, if Figure 1-Figure 4 As shown, the mounting bracket 1 also includes a sliding rod 11, a fixing plate 12 and a first bolt 13. The sliding rod 11 is a round rod structure, preferably a U-shaped, and the length should be set to meet the field of vision requirements of the pilot and the co-pilot. The fixing plates 12 are fixed at both ends. The fixing plates 12 are in direct contact with the cockpit cross beam 6 and are fixed thereto by the first bolt 13. A slide rail 111 is also axially arranged on the sliding rod 11. The sliding sleeve 2 can be fixed on the sliding rod 11 and slide along the slide rail 111. Further, the sliding sleeve 2 also includes a lower sleeve 21, a locking bolt 22, an upper sleeve 23, a second bolt 24 and a first threaded sleeve 25. The lower sleeve 21 and the upper sleeve 23 are both semi-sleeve-shaped, and are combined with each other to include the sliding rod 11. The two are locked and fixed by the second bolt 24. A first threaded sleeve 25 is also provided on the lower sleeve 21. The first threaded sleeve 25 is in the shape of a sleeve, and its through hole passes through the lower sleeve 21. A locking bolt 22 is threadedly connected to the first threaded sleeve 25. The locking bolt 22 passes through the first threaded sleeve 25 and contacts the slide rail 111. After the locking bolt 22 is rotated to contact the bottom of the slide rail 111, the sliding sleeve 2 is fixed. Otherwise, it can be unlocked and fixed so that the sliding sleeve 2 can slide. The device adopts an installation bracket 1 and a sliding sleeve 2 to slide in the axial direction of the sliding rod 11. After being tightened, the locking bolt 2 abuts against the guide rail 111 to fix the position of the display screen and prevent the display screen from flipping over, which meets the situation in which the main and co-drivers in the military vehicle need to cooperate in using a display device 5, saves space and is more convenient to operate.

[0050] Furthermore, if Figure 1 , Figure 3 , Figure 4 as well as Figure 7As shown, the rotating bracket 3 also includes a rotating pin 31, a supporting sleeve 32, an adjusting bolt 33, a second threaded sleeve 34 and a rotating frame 35, wherein the supporting sleeve 32 is a through-tube, which is arranged at the bottom of the rotating bracket 3 to play a supporting role. Preferably, the supporting sleeve 32 and the lower sleeve 21 can be an integrally formed structure to enhance the overall structural strength. Further, a rotating pin 31 is provided in the supporting sleeve 32 for supporting and linking the rotating frame 35. A rotating groove 311 is also provided on the outer surface of the rotating pin 31 around the central axis. In addition, a second threaded sleeve 34 is also provided through the side of the supporting sleeve 32, and an adjusting bolt 33 is provided in the second threaded sleeve 34. The adjusting bolt 33 can pass through the second threaded sleeve 34 and the rotating groove 311 contact connection, the rotating pin 31 can be fixed by tightening the adjusting bolt 33. Further, the rotating frame 35 is preferably U-shaped, and a rotating pin rivet hole 351 is provided at its bottom, and one end of the rotating pin 31 can be riveted and fixed therein. Further, U-shaped grooves 353 are provided at both ends of the rotating frame 35, and a limiting hole 352 is provided near the groove 353. The device adopts a method of cooperating with a sliding sleeve 2 and a rotating bracket 3, so that the fixing device has the function of sliding around the sliding rod 11 and rotating through the rotating pin 31 at the same time. The adjusting bolt 33 not only plays a locking role but also a role of preventing it from falling out by resisting the rotating groove 311 on the rotating pin 31, but also can better adapt to the smaller space environment in the military vehicle, and is more convenient to use and adjust.

[0051] Furthermore, if Figure 5-Figure 7As shown, the display device 5 includes a display screen 51, a transition plate 52, a third bolt 53 and a rotation axis 54. The transition plate 52 is fixed to both sides of the display screen 51 by the third bolt 53. A rotation axis 54 is also provided on the vertical plate surface of the transition plate 52. The rotation axis 54 is respectively inserted into the slots 353 at both ends of the rotating frame 35, so that the display device 5 can rotate axially around the rotation axis 54 on both sides. In particular, a sliding groove 521 is also provided on the transition plate 52 for use with the rotating bracket 3. Further, the locking mechanism 4 also includes a fastening handle 41, an elastic gasket 42 and a limiting column 43. The fastening handle 41 is threadedly connected to the end of the rotation axis 54 and is installed close to the rotating bracket 3. The fastening handle 41 is rotated until it is close to the surface of the rotating bracket 3 to fix the display device 5 so that it cannot rotate around the rotation axis 54. Preferably An elastic gasket 42 can also be arranged between the fastening handle 41 and the rotating bracket 3 to improve the fastening effect. Furthermore, the limiting column 43 is fixed in the limiting hole 352 and extends to the inner side of the rotating bracket 3, and the extended end is slidably connected to the sliding groove 521. The sliding groove 521 is preferably an arc groove. The sliding connection between the limiting column 43 and the sliding groove 521 can limit the rotation angle of the display screen 5 to prevent it from flipping when it is not fixed by the locking mechanism 4, affecting viewing and use. The locking mechanism 4 and the display device 5 used in this device can cooperate to control the rotation angle of the display screen 51 around the rotating axis 54 and stay at the required angle, which can meet the different visual field requirements of the driver, the co-pilot and other members at different positions. Secondly, the limiting column 43 is slidably connected to the sliding groove 521 to prevent the display screen 51 from flipping when it is not fixed.

[0052] The working principle of the multi-angle fixing device and adjustment method of a military vehicle display screen of the present invention is as follows:

[0053] The device adopts a mounting bracket 1 and a sliding sleeve 2 that slide together to form a bottom main bracket, which can slide between the main and co-pilot seats to meet the field of view requirements of viewing the display screen 51 at different positions in the vehicle. A supporting sleeve 32 is arranged on the sliding sleeve 2, and is connected to the rotating bracket 3 through a rotating pin 31, so that it can rotate around the rotating pin 31. Furthermore, a locking mechanism 4 and a rotating shaft 54 ​​are respectively arranged on the rotating bracket 3 and the display device 5, so that the display screen 51 can be further adjusted in tilt angle to meet the different field of view requirements of the main and co-pilot seats. It occupies a small area, is conducive to later vehicle modification, saves costs, and has high operational efficiency.

[0054] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-angle fixing device for a military vehicle display screen, characterized in that: include: A mounting bracket (1), and a sliding sleeve (2) slidably connected thereto, wherein a rotating bracket (3) is rotatably connected to the sliding sleeve (2); The rotating bracket (3) is rotatably connected to a display device (5), and a locking mechanism (4) is provided at the connection; The mounting bracket (1) comprises a sliding rod (11) of a U-shaped round rod structure, the sliding rod (11) being slidably connected to the sliding sleeve (2), the sliding rod (11) being provided with one or more sliding rails (111), the sliding rails (111) being in contact connection with the sliding sleeve (2); The sliding sleeve (2) comprises an upper sleeve (23), a locking bolt (22), a lower sleeve (21), a second bolt (24) and a first threaded sleeve (25); The upper sleeve (23) and the lower sleeve (21) are fixedly connected via the second bolt (24), and both are sleeved on the sliding rod (11) and slidably connected thereto; The first threaded sleeve (25) is provided through the upper sleeve (23), the locking bolt (22) is threadedly connected to the first threaded sleeve (25), and the locking bolt (22) is in contact with the slide rail (111); The rotating bracket (3) comprises a rotating pin (31), a supporting sleeve (32) and a rotating frame (35); The supporting sleeve (32) is fixed through the upper sleeve (23); The rotating frame (35) is provided with a clamping groove (353) at both ends, and a rotating pin rivet hole (351) is provided at the bottom thereof, the rivet hole being riveted and fixed to the rotating pin (31), and the rotating pin (31) is rotatably connected to the supporting sleeve (32); The rotating bracket (3) further comprises an adjusting bolt (33) and a second threaded sleeve (34); The second threaded sleeve (34) is fixed through the upper sleeve (23), and the second threaded sleeve (34) is internally threadedly connected to an adjusting bolt (33).

2. The multi-angle fixing device for a military vehicle display screen according to claim 1 is characterized in that: The display device (5) comprises a display screen (51), a transition plate (52), a third bolt (53) and a rotating shaft (54); One or more transition plates (52) are fixed to both sides of the display screen (51) via third bolts (53); A rotation shaft (54) is vertically provided on the transition plate (52) along the plate surface, and the rotation shaft (54) is rotationally connected to the clamping groove (353).

3. The multi-angle fixing device for a military vehicle display screen according to claim 2 is characterized in that: The locking mechanism (4) comprises a fastening handle (41) and an elastic gasket (42); The fastening handle (41) is threadedly connected to the rotating shaft (54); The elastic gasket (42) is arranged between the fastening handle (41) and the transition plate (52), and is in contact with and connected to both.

4. The multi-angle fixing device for a military vehicle display screen according to claim 3 is characterized in that: The rotating frame (35) is also provided with a limiting hole (352) through which a limiting column (43) is fixed; The transition plate (52) is provided with a sliding groove (521), and the limiting column (43) is slidably connected to the sliding groove (521).

5. A multi-angle fixing device for a display screen for a military vehicle according to any one of claims 1 to 3, characterized in that: The mounting bracket (1) comprises a fixing plate (12) and a first bolt (13); The fixing plate (12) is fixed to both ends of the sliding rod (11), and the first bolt (13) passes through the fixing plate (12) to fix it.

6. The multi-angle fixing device for a display screen of a military vehicle according to claim 4 is characterized in that: A rotation groove (311) is provided on the surface of the rotation pin shaft (31) around the axis, and the adjustment bolt (33) is in contact with and connected to the rotation groove (311).

7. A method for adjusting a multi-angle fixing device for a military vehicle display screen, characterized in that: The invention is realized by using a multi-angle fixing device for a display screen of a military vehicle as described in claim 6, comprising the following steps: S100: screwing the locking bolt (22) outward from the first threaded sleeve (25) so that it is out of contact with the bottom surface of the slide rail (111), and then sliding the sliding sleeve (2) along the sliding rod (11) to adjust its position; S200: After the rotating bracket (3) follows the sliding sleeve (2) to adjust its position, the locking bolt (22) is screwed into the first threaded sleeve (25) so that it is in close contact with the bottom surface of the slide rail (111), thereby fixing the display device (5) at a position of the sliding rod (11) that is convenient for observation; S300: The adjusting bolt (33) is screwed outward from the second threaded sleeve (34) so ​​that its end is out of contact with the bottom of the rotating groove (311). At this time, the rotating bracket (3) can be rotated around the central axis of the rotating pin shaft (31). The rotating pin shaft (31) is supported in the supporting sleeve (32). After being rotated to a desired position, the second threaded sleeve (34) is screwed inward until its end is in close contact with the bottom of the rotating groove (311), thereby fixing the rotating bracket (3) and the display device (5); S400: The fastening handle (41) is rotated outward from the end of the rotating shaft (54) to make the inner surface of the fastening handle (41) disengage from the elastic gasket (42), and then the display screen (51) is rotated around the rotating shaft (54) to adjust its tilt angle. After the adjustment is completed, the fastening handle (41) is rotated and screwed in the direction of the elastic gasket (42) until its inner surface is in close contact with the elastic gasket (42), thereby achieving the effect of locking the display screen (51) at a fixed tilt angle.

8. The adjustment method of the multi-angle fixing device of a military vehicle display screen according to claim 7 is characterized in that: The S400 further includes: the limiting column (43) is slidably connected in the sliding groove (521); after the fastening handle (41) is rotated outward, the rotation angle of the display device (5) is limited by the sliding groove (521); when the sliding groove (521) is rotated until its end contacts the limiting column (43), the display device (5) can no longer rotate.