An adaptive patrol head-mounted device based on multi-axis adjustment

Abstract

The utility model relates to a kind of self-adapting inspection head-mounted display equipment based on multi-axis adjustment, including the fixed support for being connected with helmet, inspection camera module and display module, further include multi-axis connecting piece, multi-axis connecting piece includes the first adapter arm and second adapter arm relatively rotatable, first adapter arm is rotatably connected with fixed support, second adapter arm is rotatably connected with display module, so that display module can be adjusted in horizontal and pitch direction relative to fixed support;First adapter arm and second adapter arm inside are each equipped with inner cavity, inner cavity is interconnected and forms wire harness channel through multi-axis connecting piece together.The utility model is through the coordinated rotation of first adapter arm and second adapter arm, display module can be flexibly adjusted in horizontal and pitch direction;Meanwhile, using wire harness channel formed by inner cavity inside multi-axis connecting piece built-in cable, avoid abrasion, entanglement or accidental pulling caused by line exposure.

Description

Technical Field

[0001] This utility model relates to the field of inspection equipment technology, and more specifically, to an adaptive inspection head-mounted display device based on multi-axis adjustment. Background Technology

[0002] With the increasing demand for intelligent inspection in fields such as power, chemical industry, and rail transportation, head-mounted display devices have become one of the core equipment to assist inspection personnel in working efficiently, as they can realize functions such as real-time visualization of inspection data and on-site image acquisition and transmission.

[0003] Currently, Chinese patent CN212111985U discloses a head-mounted inspection AR glasses, comprising a hat and the glasses themselves. The hat consists of a hat body, a front brim, and a rear brim. The front brim houses a PCB control board integrating a signal processing chip and a wireless communication module, while the rear brim houses a battery powering the PCB control board. The glasses themselves include a frame, temples mounted at both ends of the frame, and an optical display assembly on the frame. While this device optimizes weight distribution to some extent, its display module adjustment method is relatively simple, typically supporting only single-axis rotation or limited angle adjustment. This makes it difficult to adapt to differences in head shape and eye height among different wearers, resulting in discomfort and mismatched field of vision during actual use. Furthermore, the structure of the glasses themselves means that the cables connecting the glasses are externally routed. During inspection, these external cables can easily interfere with the inspection operation and may also wear out. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an adaptive inspection head-mounted display device based on multi-axis adjustment, which addresses the above-mentioned deficiencies of the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An adaptive inspection head-mounted display device based on multi-axis adjustment is constructed, including a fixed bracket for connection with a helmet, an inspection camera module, and a display module. It also includes a multi-axis connector, which comprises a first adapter arm and a second adapter arm that are rotatable relative to each other. The first adapter arm is rotatably connected to the fixed bracket, and the second adapter arm is rotatably connected to the display module, allowing the display module to be adjusted horizontally and in pitch relative to the fixed bracket. Both the first and second adapter arms have internal cavities that are interconnected to form a wiring harness channel passing through the multi-axis connector. Cables connecting the display module and the inspection camera module are routed through this wiring harness channel.

[0007] As an improvement to the adaptive inspection head-mounted display device, the first adapter arm includes a first arm housing and a connecting arm that rotatably connects the first arm housing to the fixed bracket. The connecting arm is provided with a through hole, which connects the inner cavity of the first arm housing to the inner cavity of the fixed bracket.

[0008] As an improvement to the adaptive inspection head-mounted display device, at least two connecting arms are provided, with the two connecting arms respectively distributed on opposite sides of one end of the first arm shell.

[0009] As an improvement to the adaptive inspection head-mounted display device, the second adapter arm includes a second arm housing and a rotating shaft that rotatably connects the second arm housing to the first arm housing. The rotating shaft is provided with a through hole along the axial direction, and the inner cavity of the second arm housing is connected to the inner cavity of the first arm housing through the through hole.

[0010] As an improvement to the adaptive inspection head-mounted display device, the first arm housing has a first opening, the inspection camera module is located in the first opening, the inspection camera module has a mounting shaft, and the mounting shaft passes through the through holes of the first arm housing and the connecting arm on the same side in sequence and is connected to the fixed bracket.

[0011] As an improvement to the adaptive inspection head-mounted display device, a second opening is provided at the end of the first arm shell away from the first opening, the second arm shell is partially inserted into the second opening, and the two ends of the rotating shaft are respectively rotatably connected to the side walls of the second opening.

[0012] As an improvement to the adaptive inspection head-mounted display device, the display module includes a display body and a display adapter arm connected to the display body. The display adapter arm is rotatably connected to the second arm shell, and the third shaft has an inner cavity that connects the second shaft and the display body.

[0013] As an improvement to the adaptive inspection head-mounted display device, the second arm housing is provided with a mounting hole, and the display adapter arm includes a display support and a connecting shaft rotatably connected to the display support. The connecting shaft is inserted into the second arm housing from one end of the mounting hole and connected to it, and communicates with the inner cavity of the display support through the other end of the mounting hole.

[0014] As an improvement to the adaptive inspection head-mounted display device, rotation limiters are provided at the rotation nodes between the fixed bracket, the first adapter arm, the second adapter arm, and the display module to limit the rotation angle of the display module relative to the fixed bracket.

[0015] As an improvement to the adaptive inspection head-mounted display device, the rotating node has a fixed end and a movable end. The rotation limiter includes a limit pin disposed on the movable end and two limit posts disposed on the fixed end. An active area is formed between the two limit posts for the limit pin to move, so as to limit the rotation of the movable end.

[0016] The beneficial effects of this utility model are as follows: This adaptive inspection head-mounted display device based on multi-axis adjustment can flexibly adjust the horizontal and tilt directions of the display module through the coordinated rotation of the first and second adapter arms. It can adapt to the differences in head shape and eye height of different wearers, solving the problem of wearing discomfort caused by insufficient adjustment dimensions of existing devices, and improving the versatility and wearing comfort of the device. At the same time, by using the cable harness channel formed by the internal cavity of the multi-axis connector to build in the cable, the risks of wear, entanglement or accidental pulling caused by exposed wires are effectively avoided, ensuring the stability of signal transmission between the display module and the inspection camera module, simplifying the external structure of the device, reducing the interference of the wiring to the operation during the inspection process, and improving the reliability of the device in inspection scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the adaptive inspection head-mounted display device provided by this utility model;

[0019] Figure 2 This is a partial three-dimensional structural diagram of the adaptive inspection head-mounted display device provided by this utility model;

[0020] Figure 3 This is a schematic diagram of the display module of the adaptive inspection head-mounted display device provided by this utility model, showing the state of the human eye most recently.

[0021] Figure 4 This is a schematic diagram of the display module of the adaptive inspection head-mounted display device provided by this utility model in the state furthest from the human eye;

[0022] Figure 5 This is a schematic diagram of the display module of the adaptive inspection head-mounted display device provided by this utility model adjusted to its lowest position.

[0023] Figure 6 This is a schematic diagram of the display module of the adaptive inspection head-mounted display device provided by this utility model in its highest position and open state;

[0024] Figure 7 This is one of the exploded views of the multi-axis connector of the adaptive inspection head-mounted display device provided by this utility model;

[0025] Figure 8 This is the second exploded view of the multi-axis connector of the adaptive inspection head-mounted display device provided by this utility model;

[0026] Figure 9 This is an exploded view of the second adapter arm and the display adapter arm of the adaptive inspection head-mounted display device provided by this utility model;

[0027] Figure 10 This is a partial structural diagram of the multi-axis connector of the adaptive inspection head-mounted display device provided by this utility model;

[0028] Figure 11 This is a three-dimensional structural diagram of the first and second adapter arms of the adaptive inspection head-mounted display device provided by this utility model.

[0029] Figure 12 This is a cross-sectional view of the second adapter arm and the display adapter arm of the adaptive inspection head-mounted display device provided by this utility model.

[0030] In the diagram: 1. Fixed bracket; 2. Inspection camera module; 21. Mounting shaft; 3. First adapter arm; 31. First arm housing; 311. First opening; 312. Second opening; 32. Connecting arm; 321. Through hole; 4. Second adapter arm; 41. Second arm housing; 411. Mounting hole; 42. Rotating shaft; 421. Through hole; 5. Display module; 51. Display body; 52. Display adapter arm; 521. Display support; 522. Connecting shaft; 6. Inner cavity; 7. Cable. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] It should be noted that this adaptive inspection head-mounted display device includes an adapter board, i.e., a control circuit board. The cable 7 connecting the display module 5 and the inspection camera module 2 is a connection line from the output end of the inspection camera module 2 to the adapter board and a connection line from the display module 5 to the adapter board; specifically, it includes a control signal line, a data communication line, a grounding line, a video signal line for transmitting the images or video signals captured by the inspection camera module 2 to the display module 5 for display, and a power supply line for supplying power to the inspection camera module 2 and the display module 5.

[0033] An adaptive inspection head-mounted display device based on multi-axis adjustment includes a fixed bracket 1 for connection with a helmet, an inspection camera module 2, and a display module 5. It also includes a multi-axis connector, which includes a first adapter arm 3 and a second adapter arm 4 that can rotate relative to each other. The first adapter arm 3 is rotatably connected to the fixed bracket 1, and the second adapter arm 4 is rotatably connected to the display module 5, so that the display module 5 can be adjusted in the horizontal and pitch directions relative to the fixed bracket 1. The first adapter arm 3 and the second adapter arm 4 are both provided with an inner cavity 6, and the inner cavities 6 are interconnected to form a wire harness channel that runs through the multi-axis connector. The cable 7 connecting the display module 5 and the inspection camera module 2 is passed through the wire harness channel.

[0034] Specifically, in use, the adaptive inspection head-mounted display device is installed onto a helmet via the fixed bracket 1 for the user to wear. The multi-axis connector includes a first adapter arm 3 and a second adapter arm 4 that can rotate relative to each other. The first adapter arm 3 forms a rotational engagement with the fixed bracket 1, and the second adapter arm 4 forms a rotational engagement with the display module 5. The two rotational relationships work together to allow the display module 5 to achieve horizontal and pitch rotation adjustments relative to the fixed bracket 1, thereby meeting the adjustment needs of the display module 5's position in different wearing scenarios. At the same time, both the first adapter arm 3 and the second adapter arm 4 have an internal cavity 6. The two internal cavities 6 are interconnected and together form a wiring harness channel that runs through the multi-axis connector. The cable 7 connecting the display module 5 and the inspection camera module 2 is run through this wiring harness channel, realizing the internal arrangement and orderly connection of the wiring.

[0035] This adaptive inspection head-mounted display device based on multi-axis adjustment allows the display module 5 to flexibly adjust in both horizontal and vertical directions through the coordinated rotation of the first adapter arm 3 and the second adapter arm 4. This adapts to the different head shapes and eye heights of different wearers, solving the problem of discomfort caused by insufficient adjustment dimensions in existing devices and improving the device's versatility and wearing comfort. At the same time, the cable 7 is built into the wiring channel formed by the internal cavity 6 of the multi-axis connector, effectively avoiding the risks of wear, entanglement, or accidental pulling caused by exposed wiring. This ensures the stability of signal transmission between the display module 5 and the inspection camera module 2, simplifies the external structure of the device, reduces the interference of wiring on operation during inspection, and improves the reliability of the device in inspection scenarios.

[0036] In some embodiments of this application, the first adapter arm 3 includes a first arm housing 31 and a connecting arm 32 that rotatably connects the first arm housing 31 to the fixed bracket 1. The connecting arm 32 is provided with a through hole 321, which connects the inner cavity 6 of the first arm housing 31 to the inner cavity of the fixed bracket 1.

[0037] Specifically, the first adapter arm 3 has a first arm housing 31 as its main structure, and a connecting arm 32 as a connecting component. One end of the connecting arm 32 is connected to the first arm housing 31, and the other end is rotatably engaged with the fixed bracket 1. Through the relative rotation of the connecting arm 32 and the fixed bracket 1, the first arm housing 31 can be rotated relative to the fixed bracket 1. At the same time, the through hole 321 on the connecting arm 32 can establish a communication path between the inner cavity 6 of the first arm housing 31 and the inner cavity of the fixed bracket 1. This allows the wires passing through the inner cavity 6 of the first arm housing 31 to extend into the inner cavity of the fixed bracket 1 through the through hole 321, forming a passage for the wires between the first adapter arm 3 and the fixed bracket 1. This allows the cables 7 of the display module 5 and the inspection camera module 2 to pass through a closed space, avoiding the problem of exposed wires being affected by external environmental interference or wear, and also making the wire arrangement more organized.

[0038] In some embodiments of this application, two connecting arms 32 are provided, and the two connecting arms 32 are respectively distributed on opposite sides of one end of the first arm housing 31. Specifically, two connecting arms 32 are respectively provided on opposite sides of one end of the first arm housing 31. Both connecting arms 32 are fixedly connected to the first arm housing 31, and each forms a rotational engagement relationship with the fixed bracket 1. When it is necessary to adjust the angle of the first arm housing 31 relative to the fixed bracket 1, the connecting arms 32 on both sides can rotate synchronously relative to the fixed bracket 1, jointly driving the first arm housing 31 to rotate smoothly around the rotation axis. Moreover, the through holes 321 on the two connecting arms 32 are respectively connected to the inner cavity 6 of the first arm housing 31 and the inner cavity of the fixed bracket 1, so that the circuit can pass through the through holes 321 of the connecting arms 32 on both sides between the inner cavity 6 of the first arm housing 31 and the inner cavity of the fixed bracket 1, forming a double-sided circuit connection path.

[0039] In some embodiments of this application, the second adapter arm 4 includes a second arm housing 41 and a rotating shaft 42 that rotatably connects the second arm housing 41 to the first arm housing 31. The rotating shaft 42 is provided with a through hole 421 along the axial direction, and the inner cavity 6 of the second arm housing 41 is connected to the inner cavity 6 of the first arm housing 31 through the through hole 421. Specifically, the second adapter arm 4 is based on the second arm housing 41 and is rotatably connected to the first arm housing 31 through the rotating shaft 42, so that the second arm housing 41 can rotate stably relative to the first arm housing 31 around the rotating shaft 42. At the same time, the rotating shaft 42 is provided with a through hole 421 along its own axis. The through hole 421 directly connects the inner cavity 6 inside the second arm housing 41 with the inner cavity 6 inside the first arm housing 31, forming a continuous channel structure. The cables 7 of the display module 5 and the inspection camera module 2 can pass through the inner cavity 6 of the first arm housing 31, the through hole 421 of the rotating shaft 42 and the inner cavity 6 of the second arm housing 41 in sequence, so as to realize the orderly passage of the lines between the first adapter arm 3 and the second adapter arm 4.

[0040] In some embodiments of this application, the first arm housing 31 has a first opening 311, the inspection camera module 2 is located in the first opening 311, and the inspection camera module 2 has a mounting shaft 21. The mounting shaft 21 passes through the first arm housing 31 and the through hole 321 of the connecting arm 32 on the same side in sequence and is connected to the fixed bracket 1. Specifically, the first arm housing 31 provides a space for the inspection camera module 2 through its own first opening 311, so that the inspection camera module 2 is stably placed in the first opening 311; the mounting shaft 21 of the inspection camera module 2 passes through the first arm housing 31 and the through hole 321 of the connecting arm 32 on the same side of the mounting shaft 21 in sequence according to a specific path, and finally connects to the fixed bracket 1. Through the mounting shaft 21, the inspection camera module 2 not only achieves relative positioning with the first arm housing 31 via the first opening 311, but also establishes a connection with the fixed bracket 1 via the through hole 321 of the connecting arm 32, forming a continuous connection structure of the fixed bracket 1, connecting arm 32, first arm housing 31, and inspection camera module 2, ensuring that each component maintains a relatively stable positional relationship during use. Furthermore, the structure of the mounting shaft 21 connecting to the fixed bracket 1 via the through hole 321 of the connecting arm 32 eliminates the need for additional fixing structures, making the installation layout of the inspection camera module 2 more regular. It fully utilizes the existing structure of the first arm housing 31 and connecting arm 32 for fixation, while also providing a stable structural foundation for subsequent angle adjustment, avoiding the impact of additional fixing components on the equipment's adjustment flexibility.

[0041] In some other embodiments of this application, the inspection camera module 2 is rotatably connected to the fixed bracket 1 via a mounting shaft 21, and a rotation limiter is provided between the inspection camera module 2 and the fixed bracket 1. Through the cooperation of the mounting shaft 21 and the rotation limiter, the inspection camera module 2 can be rotated and adjusted, and the rotation angle range is set to 40 degrees.

[0042] In some embodiments of this application, the end of the first arm housing 31 furthest from the first opening 311 is provided with a second opening 312. The second arm housing 41 is partially inserted into the second opening 312, and both ends of the rotating shaft 42 are rotatably connected to the side walls of the second opening 312. Specifically, the second opening 312 provides installation space for the second arm housing 41, allowing the second arm housing 41 to be partially inserted into the second opening 312, achieving initial assembly and positioning of the first arm housing 31 and the second arm housing 41. Simultaneously, it shortens the assembly distance between the first arm housing 31 and the second arm housing 41, making the connection between them more compact, reducing the overall volume occupied by the equipment in this area, and optimizing the spatial layout of the equipment structure. When it is necessary to adjust the angle of the second arm housing 41 relative to the first arm housing 31, the second arm housing 41 can rotate stably relative to the inserted first arm housing 31 around the axis of the rotating shaft 42, supported by the connection points between the rotating shaft 42 and the side walls of the second opening 312.

[0043] In some embodiments of this application, the display module 5 includes a display body 51 and a display adapter arm 52 connected to the display body 51. The display adapter arm 52 is rotatably connected to the second arm housing 41, and the third shaft is provided with an inner cavity 6 that communicates with the second shaft and the display body 51.

[0044] Specifically, one end of the display adapter arm 52 is fixedly connected to the display body 51, and the other end forms a rotational engagement with the second arm housing 41. Through the relative rotation of the display adapter arm 52 and the second arm housing 41, the angle of the display body 51 relative to the second arm housing 41 can be directly adjusted. Simultaneously, the third shaft has an internal cavity 6, which establishes a communication path between the second shaft and the display body 51. This allows the cables 7 of the display module 5 and other related components to sequentially pass through the internal cavities 6 of the second and third shafts into the display body 51, achieving orderly transmission of wiring between the second shaft and the display body 51. This effectively avoids the problems of wear, tangling, or accidental pulling during inspection caused by exposed wiring.

[0045] In some embodiments of this application, the second arm housing 41 is provided with a mounting hole 411, and the display adapter arm 52 includes a display support 521 and a connecting shaft 522 rotatably connected to the display support 521. The connecting shaft 522 is inserted into the second arm housing 41 from one end of the mounting hole 411 and connected to it, and the second arm housing 41 is connected to the inner cavity 6 of the display support 521 through the other end of the mounting hole 411. Specifically, the second arm housing 41 provides an assembly interface for the display adapter arm 52 through its own mounting hole 411. One end of the connecting shaft 522 of the display adapter arm 52 is rotatably engaged with the display support 521, and the other end is inserted into one end of the mounting hole 411 and fixedly connected to the second arm housing 41, so that the display adapter arm 52 and the second arm housing 41 establish a stable assembly relationship. At the same time, after the connecting shaft 522 is inserted into the mounting hole 411, the other end of the mounting hole 411 connects the internal space of the second arm housing 41 with the internal cavity 6 of the display support 521, so that the internal space of the second arm housing 41 is interconnected with the internal cavity 6 of the display support 521 through the mounting hole 411, forming a channel for the circuit to pass between the second arm housing 41 and the display support 521.

[0046] In some embodiments of this application, rotation limiters are provided at the rotation nodes between the fixed bracket 1, the first adapter arm 3, the second adapter arm 4 and the display module 5 to limit the rotation angle of the display module 5 relative to the fixed bracket 1. Specifically, rotation limiters are installed at each rotation node between the fixed bracket 1 and the first adapter arm 3, the first adapter arm 3 and the second adapter arm 4, and the second adapter arm 4 and the display module 5. When the relevant components are rotated to change the angle of the display module 5 relative to the fixed bracket 1, the rotation limiter at each rotation node will limit the rotation when the component rotates to a preset angle threshold, preventing the component from continuing to rotate in a direction exceeding the threshold. Through the coordinated constraint of the rotation limiters at each rotation node, the overall rotation angle of the display module 5 relative to the fixed bracket 1 is ultimately limited. This effectively prevents the display module 5 from colliding with the wearer's body (such as the eyes) due to excessive rotation during adjustment, ensuring safety during use. At the same time, by limiting the rotation angle of the display module 5, it can be ensured that the display module 5 is always within the effective angle range that can normally realize the display and inspection functions, avoiding the display module 5 deviating from its position due to excessive rotation, affecting the efficiency of inspection work, or causing the internal circuits of the equipment to be strained or the component connection structure to be damaged due to excessive rotation.

[0047] In some embodiments of this application, the rotation node has a fixed end and a movable end. The rotation limiter includes a limiting pin disposed on the movable end and two limiting posts disposed on the fixed end. An active area for the limiting pin to move is formed between the two limiting posts to limit the rotation of the movable end. Specifically, between the fixed end and the movable end of the rotation node, the limiting pin disposed on the movable end moves synchronously with the rotation of the movable end, while the two limiting posts on the fixed end form a fixed spatial boundary. The area between the two is the active area of ​​the limiting pin. When the movable end drives the limiting pin to rotate in a certain direction, if the limiting pin moves to contact one of the limiting posts, the limiting post will block the limiting pin, preventing it from continuing to move, thereby limiting the rotation angle of the movable end. Similarly, when rotating in another direction, it is blocked by the limiting post on the other side. Finally, through this cooperation, the rotation angle of the movable end is precisely limited. This avoids the display module 5 from exceeding the preset adjustment range due to excessive rotation of the movable end, effectively preventing the display module 5 from colliding with the wearer's eyes or other parts.

[0048] It should be noted that the fixed end at the rotating node includes a fixed bracket 1 fixedly connected to the connecting arm 32, a second arm shell 41 fixedly connected to the rotating shaft 42, and a display body 51 fixedly connected to the connecting shaft 522; the movable end includes a first arm shell 31 rotatably connected to the connecting arm 32, a first arm shell 31 rotatably connected to the rotating shaft 42, and a second arm shell 41 rotatably connected to the connecting shaft 522.

[0049] Furthermore, this invention uses rotation limiters to pre-set the limit rotation angles at each rotation node. For example, by limiting the rotation angle of the first adapter arm 3 to 112° and the rotation angle of the second adapter arm 4 to 90°, the final motion envelope of the display module 5 in three-dimensional space is constrained. This ensures that the display module 5 maintains a safe distance of 9mm from the human eye reference point in the Y direction throughout the entire adjustment range. Simultaneously, when the display module 5 is at its closest distance to the human eye, the pitch adjustment of the display module 5 is also strictly limited by the aforementioned rotation limiters, such as tilting up by 10° and tilting down by 10°, thus providing the necessary degree of adjustment freedom while ensuring a safe distance from the eyes in any usage state.

[0050] Furthermore, the rotating nodes between the fixed bracket 1, the first adapter arm 3, the second adapter arm 4, the display adapter arm 52, and the inspection camera module 2 are all equipped with damping adjustable structures. The damping adjustable structure includes at least one set of mutually pressing friction plates, one set rotating synchronously with the fixed end and the other set rotating synchronously with the movable end, an elastic element for applying axial pressing force to the friction plates, and an adjusting element for changing the pre-compression of the elastic element. Specifically, the elastic element is a disc spring or a helical compression spring, and the adjusting element is an adjusting screw or nut. By screwing it in or out, the pre-compression of the elastic element is changed. When the adjusting element is tightened, the pre-compression of the elastic element increases, thereby generating a greater axial pressing force on the friction plates. This causes the friction plates between the fixed end and the movable end to need to overcome greater frictional force during relative rotation, resulting in an increase in the rotational torque of the rotating node. Conversely, when the adjusting element is loosened, the pressing force decreases, and the rotational torque also decreases.

[0051] In some other embodiments of this application, in order to facilitate the layout, assembly and maintenance of the internal wiring harness, the first arm shell 31, the second arm shell 41 and the display support 521 are all split and detachable structures, which are composed of an upper shell and a lower shell that are interlocked with each other. The two are fixedly connected by screws and together enclose the internal cavity 6, thereby realizing the hidden routing of the cable 7 inside the entire device and effectively avoiding the risk of exposure.

[0052] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An adaptive inspection head-mounted display device based on multi-axis adjustment, comprising a fixed bracket for connection to a helmet, an inspection camera module, and a display module, characterized in that, It also includes a multi-axis connector, which includes a first adapter arm and a second adapter arm that can rotate relative to each other. The first adapter arm is rotatably connected to the fixed bracket, and the second adapter arm is rotatably connected to the display module, so that the display module can be adjusted in the horizontal and pitch directions relative to the fixed bracket. Both the first adapter arm and the second adapter arm have internal cavities, which are interconnected to form a wire harness channel that runs through the multi-axis connector. The cable connecting the display module and the inspection camera module passes through the wire harness channel.

2. The adaptive inspection head-mounted display device based on multi-axis adjustment according to claim 1, characterized in that, The first adapter arm includes a first arm housing and a connecting arm that rotatably connects the first arm housing to the fixed bracket. The connecting arm has a through hole that connects the inner cavity of the first arm housing to the inner cavity of the fixed bracket.

3. The adaptive inspection head-mounted display device based on multi-axis adjustment according to claim 2, characterized in that, The connecting arm is provided in at least two parts, and the two connecting arms are respectively distributed on opposite sides of one end of the first arm shell.

4. The adaptive inspection head-mounted display device based on multi-axis adjustment according to claim 2, characterized in that, The second adapter arm includes a second arm housing and a rotating shaft that rotatably connects the second arm housing to the first arm housing. The rotating shaft has a through hole extending through it along the axial direction, and the inner cavity of the second arm housing is connected to the inner cavity of the first arm housing through the through hole.

5. The adaptive inspection head-mounted display device based on multi-axis adjustment according to claim 4, characterized in that, The first arm housing has a first opening, the inspection camera module is located in the first opening, the inspection camera module has a mounting shaft, the mounting shaft passes through the through holes of the first arm housing and the connecting arm on the same side in sequence and is connected to the fixed bracket.

6. The adaptive inspection head-mounted display device based on multi-axis adjustment according to claim 5, characterized in that, The first arm housing has a second opening at the end away from the first opening, the second arm housing is partially inserted into the second opening, and the two ends of the rotating shaft are rotatably connected to the side walls of the second opening respectively.

7. The adaptive inspection head-mounted display device based on multi-axis adjustment according to claim 4, characterized in that, The display module includes a display body and a display adapter arm connected to the display body. The display adapter arm is rotatably connected to the second arm housing. The third shaft has an inner cavity that connects the second shaft and the display body.

8. The adaptive inspection head-mounted display device based on multi-axis adjustment according to claim 4, characterized in that, The second arm housing is provided with a mounting hole. The display adapter arm includes a display support and a connecting shaft rotatably connected to the display support. The connecting shaft is inserted into the second arm housing from one end of the mounting hole and connected to the second arm housing through the other end of the mounting hole to connect the second arm housing with the inner cavity of the display support.

9. The adaptive inspection head-mounted display device based on multi-axis adjustment according to any one of claims 1-8, characterized in that, Rotation limiters are provided at the rotation nodes between the fixed bracket, the first adapter arm, the second adapter arm, and the display module to limit the rotation angle of the display module relative to the fixed bracket.

10. The adaptive inspection head-mounted display device based on multi-axis adjustment according to claim 9, characterized in that, The rotating node has a fixed end and a movable end. The rotation limiter includes a limit pin disposed on the movable end and two limit posts disposed on the fixed end. An active area is formed between the two limit posts to allow the limit pin to move, so as to limit the rotation of the movable end.

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