Multi-directional adjustable night vision device support

Abstract

The utility model discloses a night vision device support capable of being adjusted in multiple directions. The night vision device support comprises a helmet connecting part used for being connected with a helmet, a night vision device connecting part used for installing a night vision device and an overturning connecting part arranged between the helmet connecting part and the night vision device connecting part. The turnover connecting part comprises a shell, a turnover shaft, a turnover frame and a turnover locking mechanism; the shell is connected with the helmet connecting part; the turnover shaft is arranged in the shell and can rotate relative to the shell; one end of the turnover frame is connected with the night vision device connecting part, and the other end of the turnover frame is connected with the end part of the turnover shaft; and the turnover locking mechanism acts on the shell and the turnover shaft. According to the night vision device, the overturning locking mechanism is arranged, the support is in a locked state when being overturned upwards, the overturning locking mechanism needs to be simply operated to complete unlocking when being overturned downwards, and therefore the problem that the night vision device is accidentally overturned downwards and collides with a user can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of night vision device bracket technology, specifically to a multi-directional adjustable night vision device bracket. Background Technology

[0002] Night vision devices are external sights used at night, with an image intensifier as their core component. They do not use infrared searchlights to illuminate the target; instead, they utilize the light reflected from the target under dim lighting conditions, which is then amplified by the image intensifier onto a fluorescent screen to create a visible image perceptible to the human eye for observation and aiming. In existing technology, night vision devices are typically mounted on helmets using night vision device mounts. Existing mounts have the following technical problems:

[0003] 1. Night vision devices can be flipped up to the top of a helmet or down to the user's eyes using existing brackets. However, existing brackets lack a locking mechanism, which can easily cause the night vision devices to accidentally flip down and bump into the user.

[0004] 2. There are tolerances in the dovetail joints of night vision devices from different manufacturers and models. At the same time, there are unavoidable errors in the production process of the dovetail groove of the bracket. This makes it difficult for the dovetail groove of the same bracket to be perfectly compatible with multiple night vision devices with similar dovetail joints.

[0005] 3. Although the existing bracket can adjust the parallel angle between the night vision device and the eye, it cannot adjust the height of the night vision device, which makes it impossible for the user to effectively align the eye with the eyepiece of the night vision device.

[0006] 4. Not all individual low-light night vision devices use the same dovetail connector. This means that night vision devices using other dovetail connectors can only use brackets with specific dovetail grooves. As a result, the existing brackets cannot be quickly matched with multiple night vision devices. When a user switches from one type of night vision device to another, it means that the user needs to purchase a brand new bracket for the new night vision device.

[0007] 5. Different helmets and night vision device brackets often have different tolerances or completely different fasteners. The existing brackets cannot be quickly disassembled from the helmets, which makes it impossible for the existing night vision device brackets to be effectively used on specific helmets. Summary of the Invention

[0008] Therefore, this utility model provides a multi-directional adjustable night vision device bracket to solve one or more of the above-mentioned problems.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A multi-directional adjustable night vision device holder, comprising:

[0011] Helmet connector for attaching to a helmet;

[0012] Night vision device connector for mounting night vision devices;

[0013] A flip-up connector is provided between the helmet connector and the night vision device connector;

[0014] The flip connection includes a housing, a flip shaft, a flip frame, and a flip locking mechanism; the housing is connected to the helmet connection; the flip shaft is disposed inside the housing and can rotate relative to the housing; one end of the flip frame is connected to the night vision device connection, and the other end is connected to the end of the flip shaft;

[0015] The flip-locking mechanism includes a limiting bushing, a fixed bushing, an unlocking push rod, a flip-unlocking button, and a locking block. The limiting bushing is fixedly sleeved on the flip shaft and has a locking groove and an unlocking groove, which are axially connected. The fixed bushing is fixed inside the housing and has a through-shaft hole. The unlocking push rod is slidably disposed in the through-shaft hole. The flip-unlocking button is disposed outside the housing and fixed to the outer end of the unlocking push rod. The locking block is fixed to the inner end of the unlocking push rod, and one end of the locking block is located in the locking groove or the unlocking groove.

[0016] Furthermore, an ear plate is provided at one end of the flip frame near the housing, the ear plate is located on the side of the housing away from the flip unlock button, and the flip frame is rotatably connected to the flip shaft through the ear plate;

[0017] The flip connection also includes an angle fine-tuning mechanism, which includes a fine-tuning plate and a fine-tuning knob. The fine-tuning plate is disposed on the side of the ear plate away from the housing, and the fine-tuning plate is fixed to the end of the flip shaft. The fine-tuning knob includes a knob lug, a limiting plate fixed on the knob lug, a rotating moving plate fixed at the center of the limiting plate, and an eccentric shaft eccentrically disposed on the rotating moving plate.

[0018] The fine-tuning plate is provided with an angle fine-tuning flat hole, the ear plate is provided with an angle fine-tuning actuation hole adapted to the eccentric shaft, the rotating moving disk is installed in the angle fine-tuning flat hole, the eccentric shaft passes through the angle fine-tuning actuation hole, the end of the eccentric shaft is screwed with a nut, and the ear plate and the fine-tuning plate are sandwiched between the nut and the limiting disk.

[0019] Furthermore, the helmet connection part includes a plug-in slider, which is slidably connected to the shell. A screw mounting groove is provided on the side of the plug-in slider facing the shell, and a push button mounting groove is provided on the side of the shell facing the plug-in slider. A height adjustment mechanism is provided between the plug-in slider and the shell.

[0020] The height adjustment mechanism includes a height adjustment screw, a height adjustment push button, a height adjustment locking block, and a height adjustment return spring. The height adjustment screw is fixed in the screw mounting groove. A portion of the height adjustment push button protrudes outside the housing, while the other portion is slidably disposed in the push button mounting groove. The height adjustment locking block is connected to the height adjustment push button, and is disposed in the screw mounting groove and located on one side of the height adjustment screw. The side of the height adjustment locking block facing the screw has a threaded surface adapted to the height adjustment screw. The height adjustment return spring is disposed in the push button mounting groove and is used to provide a thrust for the height adjustment push button to slide out of the housing.

[0021] Furthermore, the helmet connection includes a helmet holder and a buckle unlocking mechanism;

[0022] The helmet holder is provided with a longitudinal locking tongue mounting cavity and a transverse wing plate mounting cavity. The locking tongue mounting cavity and the wing plate mounting cavity are perpendicular to each other and communicate with each other.

[0023] The buckle unlocking mechanism includes a push block, a linkage locking tongue, an unlocking fin plate, and a locking return spring. The push block is slidably disposed within the locking tongue mounting cavity, and a locking tongue groove is provided on one side of the push block. A guide pressing surface is provided at the end of the push block facing the unlocking fin plate. The front end of the linkage locking tongue extends out of the helmet holder, the middle section is slidably mounted in the locking tongue groove, and a stop block abutting against the rear end of the push block is provided at the rear end. The middle section of the unlocking fin plate is slidably mounted in the fin plate mounting cavity, and both ends protrude from the helmet holder. A V-shaped groove adapted to the guide pressing surface is provided at the position of the unlocking fin plate facing the push block. The locking return spring is disposed within the locking tongue mounting cavity and is used to provide a pushing force for the linkage locking tongue to slide outward from the helmet holder.

[0024] Furthermore, the night vision device connection part includes an instrument holder, which is slidably connected to the flip frame. A button mounting slot is provided on one side of the instrument holder, and a row of position locking slots is provided on one side of the flip frame corresponding to the button mounting slot. A position adjustment and locking mechanism is provided between the instrument holder and the flip frame.

[0025] The position adjustment and locking mechanism includes a position adjustment button, a position locking protrusion, and a position adjustment and locking spring. A portion of the position adjustment button is located within the button mounting slot, and another portion is located outside the button mounting slot. The middle portion of the position adjustment button is rotatably connected to the instrument holder. The position locking protrusion is mounted on the side of the position adjustment button facing the position locking slot. The position adjustment and locking spring is disposed within the button mounting slot and provides a thrust to the portion of the position adjustment button located within the button mounting slot, causing the position locking protrusion to engage with the position locking slot.

[0026] Furthermore, the night vision device connection part includes an instrument holder, the instrument holder includes a holder base plate and a dovetail groove side plate and a dovetail groove movable side plate disposed on the holder base plate, the holder base plate is connected to the flip frame, the dovetail groove side plate and the dovetail groove movable side plate are spaced apart and form a trapezoidal dovetail groove for mounting the night vision device between them.

[0027] The dovetail groove movable side plate is slidably disposed on the card seat base plate along the length direction of the trapezoidal dovetail groove. A shim mounting groove is provided on the side of the dovetail groove movable side plate opposite to the card seat base plate. A strip hole is provided in the shim mounting groove. A threaded hole is provided on the card seat base plate at the position corresponding to the strip hole. The dovetail groove movable side plate and the card seat base plate are detachably connected by bolts passing through the strip hole and screwed into the threaded hole.

[0028] Furthermore, the night vision device connection part includes an instrument holder, a strip, and an instrument engagement thrust spring; the instrument holder is connected to the flip frame, and a trapezoidal dovetail groove is provided on the side of the instrument holder away from the flip frame. One end of the instrument holder is provided with a slot extending along the length direction of the trapezoidal dovetail groove, and a communicating cavity is provided between the inward-facing section of the slot and the trapezoidal dovetail groove; one end of the strip is inserted into the slot, and the strip is rotatably connected to the side wall of the slot. The inner end of the strip facing the trapezoidal dovetail groove is provided with a protruding locking strip that matches the slot of the dovetail connector of the night vision device, and the other end of the strip is located outside the instrument holder; the instrument engagement thrust spring is provided in the slot to provide thrust for the strip so that the protruding locking strip engages with the slot of the dovetail connector of the night vision device.

[0029] Furthermore, the outer end of the fixed bushing is provided with a flip spring mounting cavity; the flip locking mechanism also includes a flip locking spring, which is installed in the flip spring mounting cavity and is used to provide a thrust for the unlocking push rod to move out of the housing.

[0030] Furthermore, both the housing and the fine-tuning plate are provided with a matching limiting lug. When the locking block is in the locking groove, the two limiting lugs are separated. When the flipping frame is flipped down, the two limiting lugs abut against each other.

[0031] Furthermore, the helmet connection part includes a helmet holder and a plug-in slider. The helmet holder has multiple pairs of through holes, and the plug-in slider has multiple pairs of height adjustment threaded holes. The multiple pairs of through holes and the multiple pairs of height adjustment threaded holes are evenly distributed along the height direction. The number of pairs of height adjustment threaded holes is greater than the number of pairs of through holes. The helmet holder and the plug-in slider are connected by bolts, and the plug-in slider is connected to the shell.

[0032] This utility model has the following advantages:

[0033] The multi-directional adjustable night vision device bracket provided by this utility model has a fixed bushing that is fixed relative to the housing. When the locking block is in the locking groove, the housing cannot rotate or swing relative to the flip axis, thus preventing the flip frame from flipping down and keeping the night vision device mounted on the night vision device connection part in the helmet position. When it is necessary to flip down, press the flip unlock button, and the unlock push rod will move the locking block from the locking groove to the unlock groove. At this time, the unlock is completed, and the fixed bushing (considered as a whole with the housing) can rotate or swing relative to the axis of the flip axis, thus allowing the flip frame to flip down. In this way, it is locked in the flipped-up state, and needs to be pressed to unlock when flipping down, avoiding the problem of the night vision device accidentally flipping down and hitting the user due to strong impacts during combat.

[0034] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0035] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0036] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0037] Figure 1 A schematic diagram of the structure of a multi-directional adjustable night vision device bracket provided for an embodiment of this utility model;

[0038] Figure 2 A schematic diagram of the structure of the flip-up connection part of a multi-directional adjustable night vision device bracket provided in an embodiment of this utility model;

[0039] Figure 3 Another view of the structure of the flip-up connection part of a multi-directional adjustable night vision device bracket provided in an embodiment of this utility model;

[0040] Figure 4 A schematic diagram of the structure of the flipping shaft and flipping frame of the flipping connection part of a multi-directional adjustable night vision device bracket provided in an embodiment of this utility model;

[0041] Figure 5 A schematic diagram of the flip locking mechanism and angle fine-tuning mechanism of the flip connection part of a multi-directional adjustable night vision device bracket provided in this embodiment of the utility model;

[0042] Figure 6 A schematic diagram of the height adjustment mechanism of a multi-directional adjustable night vision device bracket provided for an embodiment of this utility model;

[0043] Figure 7 A schematic diagram illustrating the connection relationship between the height adjustment mechanism of a multi-directional adjustable night vision device bracket and the plug-in slider of the helmet connection part, provided for an embodiment of this utility model;

[0044] Figure 8 A schematic diagram of the buckle unlocking mechanism inside the helmet holder of a multi-directional adjustable night vision device bracket provided in an embodiment of this utility model;

[0045] Figure 9 A schematic diagram of the structure of the helmet connection part of a multi-directional adjustable night vision device bracket in the embodiment of this utility model when the plug-in slider is separated from the helmet holder;

[0046] Figure 10A schematic diagram of the structure of a multi-directional adjustable night vision device bracket, wherein the night vision device connection part is mounted on a flip frame, as provided in an embodiment of the present utility model;

[0047] Figure 11 A schematic diagram showing the disassembled state of the night vision device connecting part, the flip frame, and the position adjustment and locking mechanism of a multi-directional adjustable night vision device bracket provided in this embodiment of the utility model.

[0048] Figure 12 A schematic diagram of the structure of the night vision device connection part of a multi-directional adjustable night vision device bracket provided for an embodiment of this utility model;

[0049] Figure 13 A schematic diagram of the night vision device connection part of a multi-directional adjustable night vision device bracket provided in an embodiment of this utility model;

[0050] Figure 14 A schematic diagram of the helmet holder of a helmet connection part of a multi-directional adjustable night vision device bracket provided in an embodiment of this utility model;

[0051] Figure 15 A schematic diagram of the buckle unlocking mechanism of the helmet connection part of a multi-directional adjustable night vision device bracket provided in an embodiment of this utility model;

[0052] Figure 16 A schematic diagram of the push block and linkage locking tongue of the buckle unlocking mechanism of the helmet connection part of a multi-directional adjustable night vision device bracket provided for an embodiment of this utility model;

[0053] Figure 17 A schematic diagram of the height adjustment push button and height adjustment locking block of a multi-directional adjustable night vision device bracket provided in this embodiment of the utility model;

[0054] Figure 18 A schematic diagram of the micro-adjustment knob of the angle micro-adjustment mechanism of the flip connection part of a multi-directional adjustable night vision device bracket provided in an embodiment of this utility model;

[0055] Figure 19 A schematic diagram of the structure of the angle fine-tuning mechanism of the flip connection part of a multi-directional adjustable night vision device bracket provided in this embodiment of the utility model, after removing the fine-tuning knob;

[0056] Figure 20 This is a schematic diagram of the dovetail groove movable side plate of the instrument holder of the night vision device connection part of a multi-directional adjustable night vision device bracket provided in an embodiment of the present utility model.

[0057] In the picture:

[0058] 10-Helmet connector, 11-Plug-in slider, 111-Screw mounting slot, 112-Height adjustment threaded hole, 12-Helmet holder, 121-Lock tongue mounting cavity, 122-Fin plate mounting cavity, 123-Through hole, 13-Snap-on unlocking mechanism, 131-Push block, 1311-Guide pressing surface, 132-Linkage lock tongue, 1321-Lock tongue, 1322-Stop block, 133-Unlocking fin plate, 1331-V-shaped groove, 134-Locking return spring;

[0059] 20-Night vision device connector, 21-Instrument holder, 211-Button mounting slot, 212-Mounting lug, 213-Holder holder base plate, 214-Dovetail groove side plate, 215-Dovetail groove movable side plate, 2151-Shim mounting recess, 2152-Strip hole, 2153-Strip shim, 216-Trapezoidal dovetail groove, 217-Slot, 218-Communicating cavity, 22-Insert strip, 221-Protruding retaining strip, 23-Instrument retaining thrust spring;

[0060] 30-Flip connecting part, 31-Housing, 311-Push button mounting slot, 312-Limiting lug, 32-Flip shaft, 33-Flip frame, 331-Ear plate, 3311-Angle fine-tuning toggle hole, 332-Pivoting protrusion, 333-Position locking groove, 34-Flip locking mechanism, 341-Limiting bushing, 3411-Locking groove, 3412-Unlocking groove, 342-Fixed bushing, 3421-Limiting block, 343-Unlocking push rod, 344-Flip unlocking button, 345-Locking block, 35-Angle fine-tuning mechanism, 351-Fine-tuning plate, 3511-Angle fine-tuning flat hole, 352-Fine-tuning knob, 3521-Button lug, 3522-Limiting plate, 3523-Rotating moving plate, 3524-Eccentric shaft;

[0061] 40 - Height adjustment mechanism, 41 - Height adjustment screw, 42 - Height adjustment push button, 43 - Height adjustment locking block, 431 - Threaded surface, 44 - Height adjustment return spring;

[0062] 50 - Position adjustment and locking mechanism; 51 - Position adjustment button; 52 - Position locking protrusion; 53 - Position adjustment and locking spring. Detailed Implementation

[0063] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0064] like Figure 1-20As shown, this embodiment provides a multi-directional adjustable night vision device bracket, including a helmet connection part 10 for connecting to a helmet, a night vision device connection part 20 for mounting a night vision device, and a flip connection part 30 disposed between the helmet connection part 10 and the night vision device connection part 20.

[0065] The flip connection 30 includes a housing 31, a flip shaft 32, a flip frame 33, and a flip locking mechanism 34. The housing 31 is connected to the helmet connection 10. The shaft of the flip shaft 32 is laterally (left-right) disposed within the housing 31, with its end extending out of the housing 31; the flip shaft 32 is rotatably connected to the housing 31, for example, via a bearing. The distal end of the flip frame 33 is connected to the night vision device connection 20, and the proximal end is connected to the end of the flip shaft 32.

[0066] The flip-locking mechanism 34 includes a limiting bushing 341, a fixing bushing 342, an unlocking push rod 343, a flip-unlocking button 344, and a locking block 345. The limiting sleeve 341 is fixedly sleeved on the flip shaft 32. The limiting sleeve 341 is provided with a locking groove 3411 and an unlocking groove 3412. The locking groove 3411 and the unlocking groove 3412 are connected axially on the flip shaft 32, thereby ensuring that the locking block 345 can enter the unlocking groove 3412 from the locking groove 3411 and can enter the locking groove 3411 from the unlocking groove 3412. For example, the unlocking groove 3412 is an annular groove, which is convenient for processing and does not require consideration of the travel of the unlocking groove 3412. The groove depth of the unlocking groove 3412 is greater than the groove depth of the locking groove 3411, thereby ensuring that the locking block 345 can be limited in the locking groove 3411 and can be unlocked in the unlocking groove 3412. In this embodiment, the locking groove 3411 is closer to the flip unlocking button 344 than the unlocking groove 3412. The fixed bushing is laterally fixed inside the housing 31, typically by set screws or bolts. The fixed bushing has a through-hole, in which the unlocking push rod 343 is slidably disposed. A limit block 3421 is provided at the inner end of the fixed bushing (the end furthest from the flip-to-unlock button 344). The limit block 3421 limits the locking block 345, preventing it from rotating around the unlocking push rod 343 and thus avoiding locking failure. Alternatively, the unlocking push rod 343 can be circumferentially limited by a guide key (the unlocking push rod 343 can still slide axially), eliminating the need for the limit block 3421 to prevent the locking block 345 from rotating around the unlocking push rod 343. The flip-to-unlock button 344 is located outside the housing 31 and fixed to the outer end of the unlocking push rod 343. The locking block 345 is fixed to the inner end of the unlocking push rod 343. One side of the locking block 345 abuts against the limiting block 3421. One end of the locking block 345 is located in the locking groove 3411 or the unlocking groove 3412. The shape of the locking block 345 and the locking groove 3411 are adapted to each other. Preferably, the cross-section of the end of the locking groove 3411 near the unlocking groove 3412 is larger than the cross-section of the end of the locking groove 3411 away from the unlocking groove 3412. This provides a guiding function during the process of the locking block 345 retracting into the locking groove 3411, making the retraction action smoother.

[0067] The fixed bushing 342 is fixed relative to the housing 31. When the locking block 345 is in the locking groove 3411, the housing 31 cannot rotate or swing relative to the flip shaft 32, so that the flip frame 33 cannot be flipped down, keeping the night vision device installed on the night vision device connection part 20 on the helmet. When it is necessary to flip down, press the flip unlock button 344, and the locking block 345 moves from the locking groove 3411 to the unlock groove 3412 through the unlock push rod 343. At this time, the unlocking is completed, and the fixed bushing 342 (considered as a whole with the housing 31) can rotate or swing relative to the axis of the flip shaft 32, so that the flip frame 33 can be flipped down. In this way, it is locked when flipped up, and needs to be pressed to unlock when flipping down, so as to avoid the problem of the night vision device accidentally flipping down and hitting the user due to strong impact during combat.

[0068] It should be noted that the flipping frame 33 and the flipping shaft 32 are either rotatably connected or not rotatably connected. When rotatably connected, a fine-tuning plate 351 that is fixedly connected to the flipping shaft 32 is required. The flipping frame 33 and the fine-tuning plate 351 can swing within a certain angle. The contents of the fine-tuning plate 351 are referred to in the following embodiments. When not rotatably connected, the flipping shaft 32 and the flipping frame 33 are relatively fixed. Only in this way can the above-mentioned function of "locking when flipping up and unlocking when flipping down" be realized.

[0069] In one embodiment, a flip spring mounting cavity is provided at the end of the fixed bushing 342 away from the limiting block 3421; the flip locking mechanism 34 further includes a flip locking spring, which is installed in the flip spring mounting cavity and provides a thrust for the unlocking push rod 343 to move outward from the housing 31. Thus, under the action of the flip locking spring, the unlocking push rod 343 has a tendency to move outward from the housing 31, thereby preventing the locking block 345 in the locking groove 3411 from sliding into the unlocking groove 3412, thus avoiding unlocking without external force; at the same time, the locking block 345 in the unlocking groove 3412 has a tendency to slide into the locking groove 3411 along the axial direction of the flip shaft 32, realizing the function of "automatic locking after flipping up to the correct position".

[0070] In one embodiment, the flip frame 33 is provided with an ear plate 331 and a pivoting protrusion 332 at one end near the housing 31. The ear plate 331 is located on the side of the housing 31 away from the flip unlock button 344, and the pivoting protrusion 332 is located on the other side of the housing 31. The flip frame 33 is rotatably connected to the flip shaft 32 through the ear plate 331 and the pivoting protrusion 332.

[0071] The flip-connecting part 30 further includes an angle fine-tuning mechanism 35, which includes a fine-tuning plate 351 and a fine-tuning knob 352. The fine-tuning plate 351 is disposed on the side of the ear plate 331 opposite to the housing 31, and is fixed to the end of the flip-shaft 32. The fine-tuning knob 352 includes a knob lug 3521, a limiting plate 3522 fixed to the knob lug 3521, a rotating moving plate 3523 fixed to the center of the limiting plate 3522, and an eccentric shaft 3524 eccentrically disposed on the rotating moving plate 3523. The fine-tuning plate 351 is provided with an angle fine-tuning flat hole 3511, the ear plate 331 is provided with an angle fine-tuning actuation hole 3311 adapted to the eccentric shaft 3524, the rotating moving disk 3523 is installed in the angle fine-tuning flat hole 3511 with a gap, the eccentric shaft 3524 passes through the angle fine-tuning actuation hole 3311, and a nut is screwed onto the end of the eccentric shaft 3524. The ear plate 331 and the fine-tuning plate 351 are sandwiched between the nut and the limiting disk 3522.

[0072] When the knob lug 3521 of the fine-tuning knob 352 is rotated, the eccentric shaft 3524 interacts with the angle fine-tuning toggle hole 3311. Since the fine-tuning plate 351 is fixedly connected to the flip shaft 32, the lug 331 swings around the flip shaft 32 at a certain angle, thereby adjusting the parallelism between the night vision device and the eye. This process adjusts the angle of the flip frame 33 and is independent of the upward or downward flip angle of the flip frame 33. The angle fine-tuning flat hole 3511 is an oblong through hole. During angle fine-tuning, the rotating moving disk 3523 can not only rotate within the angle fine-tuning flat hole 3511 but also slide along it, thus avoiding physical interference.

[0073] In one embodiment, both the housing 31 and the fine-tuning plate 351 are provided with a matching limiting lug 312. When the locking block 345 is in the locking groove 3411, the two limiting lugs 312 are separated. When the flip frame 33 is flipped down, the two limiting lugs 312 abut against each other, thereby preventing excessive flipping and injury to the user's eyes.

[0074] In one embodiment, the helmet connection part 10 includes a plug-in slider 11, which is slidably connected to the housing 31. A vertical screw mounting groove 111 is provided on the side of the plug-in slider 11 facing the housing 31, and a horizontal push button mounting groove 311 is provided on the side of the housing 31 facing the plug-in slider 11. A height adjustment mechanism 40 is provided between the plug-in slider 11 and the housing 31.

[0075] The height adjustment mechanism 40 includes a height adjustment screw 41, a height adjustment push button 42, a height adjustment locking block 43, and a height adjustment reset spring 44. The height adjustment screw 41 is vertically fixed within the screw mounting groove 111. Exemplarily, the upper and lower sidewalls of the screw mounting groove 111 are respectively provided with threaded holes, one of which is a through-hole. The height adjustment screw 41 is screwed into the screw mounting groove 111 through the through-hole and further screwed into the other threaded hole, thereby completing the fixation of the height adjustment screw 41. A portion of the height adjustment push button 42 protrudes outside the housing 31, while the other portion slides within the push button mounting groove 311. It should be noted that the height adjustment push button 42 slides laterally. The height adjustment locking block 43 is connected to the height adjustment push button 42. The height adjustment locking block 43 is disposed in the screw mounting groove 111 and located on one side of the height adjustment screw 41. The side of the height adjustment locking block 43 facing the screw has a threaded surface 431 adapted to the height adjustment screw 41. Preferably, the threaded surface 431 of the height adjustment locking block 43 is the surface after machining threads on an arc surface. For example, by machining internal threads in a hollow cylinder and then cutting off a portion of the solid structure, a height adjustment locking block 43 with an arc-shaped threaded surface 431 can be obtained. The height adjustment return spring 44 is laterally disposed in the push button mounting groove 311 and is used to provide a lateral thrust for the height adjustment push button 42 to slide outward from the housing 31. In this embodiment, the height adjustment locking block 43 is located on the side of the height adjustment screw 41 away from the height adjustment locking block, and the height adjustment reset spring 44 is on the same side of the height adjustment screw 41 as the height adjustment locking block 43. For example, a spring cavity is provided at the inner end of the height adjustment push button 42, one end of the height adjustment reset spring 44 is in the spring cavity, and the other end abuts against the side wall of the push button mounting groove 311.

[0076] Under normal conditions, the height adjustment push button 42 is in its longest exposed position under the action of the height adjustment return spring 44. At this time, the internal thread of the threaded surface 431 of the height adjustment locking block 43 engages with the external thread of the height adjustment screw 41, preventing the plug-in slider 11 from sliding relative to the housing 31. That is, the plug-in slider 11 and the housing 31 are locked, and height adjustment cannot be performed. Pressing the height adjustment push button 42 inward compresses the height adjustment return spring 44, storing energy. At the same time, the height adjustment locking block 43 disengages from the height adjustment screw 41, releasing the lock. At this time, the housing 31 can be slid freely to adjust the height. After the height is suitable, releasing the height adjustment push button 42 causes the height adjustment locking block 43 to re-lock with the height adjustment screw 41 under the action of the height adjustment return spring 44, maintaining the current height. In this way, the height of the night vision device can be adjusted very conveniently.

[0077] In one embodiment, the helmet connection 10 includes a helmet holder 12 and a buckle unlocking mechanism 13.

[0078] The helmet holder 12 has a longitudinal locking tongue mounting cavity 121 and a transverse fin mounting cavity 122. The locking tongue mounting cavity 121 and the fin mounting cavity 122 are perpendicularly arranged and communicate with each other. The helmet holder 12 is used for quick connection with the slot on the helmet.

[0079] The latch unlocking mechanism 13 includes a push block 131, a linkage locking tongue 132, an unlocking fin 133, and a locking return spring 134. The push block 131 is slidably disposed within the locking tongue mounting cavity 121, and a locking tongue groove is provided on one side of the push block 131. A guide pressing surface 1311 is provided at the end of the push block 131 facing the unlocking fin 133. The front end of the linkage locking tongue 132 (i.e., the locking tongue 1321) extends out of the helmet holder 12, and the locking tongue 1321 has a rounded chamfer. The middle section of the linkage locking tongue 132 is slidably mounted in the locking tongue groove. A stop block 1322 is provided at the rear end of the linkage locking tongue 132, which abuts against the rear end of the push block 131. The middle section of the unlocking fin 133 is slidably mounted in the fin mounting cavity 122, and both ends protrude from the helmet holder 12. A V-shaped groove 1331, adapted to the guide pressing surface 1311, is provided on the unlocking fin 133 facing the push block 131. The locking return spring is disposed within the locking tongue mounting cavity 121 and provides a pushing force for the linkage locking tongue 132 to slide outward from the helmet holder 12. For example, one end of the locking return spring abuts against the inner wall of the locking tongue mounting cavity 121, and the other end abuts against the stop block 1322.

[0080] During quick connection, one side of the helmet holder 12 (the side away from the locking tongue 1321) engages with the corresponding structure of the helmet slot. Then, pressing the side of the helmet holder 12 with the locking tongue 1321 causes the locking tongue 1321 to retract inward under the action of the helmet slot and the rounded chamfer, while the locking return spring 134 is compressed. When the locking tongue 1321 is aligned with the corresponding structure of the helmet slot (such as the locking groove), the locking tongue 132 extends outward under the action of the locking return spring 134, and the locking tongue 1321 engages with the locking groove, completing the quick connection between the night vision device bracket and the helmet. During disassembly, push either end of the unlocking fin plate 133 to move it laterally. During this process, the groove wall of the V-shaped groove 1331 of the unlocking fin plate 133 interacts with the guide pressing surface 1311 of the push block 131, causing the push block 131 to slide inward. Then, under the action of the stop block 1322, the linkage locking tongue 132 slides inward, thereby causing the locking tongue 1321 to exit from the locking groove, completing the unlocking. At this time, the night vision device bracket can be removed from the helmet.

[0081] In one embodiment, the helmet holder 12 is provided with multiple pairs of through holes 123, and the plug-in slider 11 is provided with multiple pairs of height adjustment threaded holes 112. The multiple pairs of through holes and the multiple pairs of height adjustment threaded holes 112 are distributed at equal intervals along the height direction. The number of pairs of height adjustment threaded holes 112 is greater than the number of pairs of through holes. The helmet holder 12 and the plug-in slider 11 are connected by bolts, and the plug-in slider 11 is connected to the housing 31.

[0082] By selecting different height adjustment threaded holes 112, the insertion slider 11 can be positioned at different heights of the helmet holder 12, thereby further adjusting the height of the night vision device.

[0083] In one embodiment, the night vision device connection part 20 includes an instrument holder 21, which is slidably connected to the flip frame 33. A button mounting slot 211 is provided on one side of the instrument holder 21 for mounting a position adjustment button 51. A mounting lug 212 is provided on each side of the opening of the button mounting slot 211 for mounting a rotating shaft, which is connected to the position adjustment button 51. The flip frame 33 has a row of position locking slots 333 on one side corresponding to the button mounting slot 211; exemplarily, the locking slots are racks or equally spaced semi-circular grooves. A position adjustment locking mechanism 50 is provided between the instrument holder 21 and the flip frame 33.

[0084] The position adjustment and locking mechanism 50 includes a position adjustment button 51, a position locking protrusion 52, and a position adjustment and locking spring 53. A portion of the position adjustment button 51 is located within the button mounting slot 211; another portion is located outside the button mounting slot 211. The middle portion of the position adjustment button 51 is rotatably connected to the instrument holder 21, for example, the middle portion of the position adjustment button 51 is rotatably connected to a rotating shaft mounted on the mounting lug 212. The position locking protrusion 52 is mounted on the side of the position adjustment button 51 facing the position locking groove 333; preferably, the shape of the position locking protrusion 52 is adapted to the locking groove. The position adjustment locking spring 53 is disposed in the button mounting groove 211. The position adjustment locking spring 53 is used to provide a thrust to the part of the position adjustment button 51 that is located in the button mounting groove 211 so that the position locking protrusion 52 is engaged in the position locking groove 333. For example, a spring cavity is provided at the position where the position adjustment button 51 interacts with the position adjustment locking spring 53. One end of the position adjustment locking spring 53 is located in the spring cavity, and the other end abuts against the wall plate of the button mounting groove 211.

[0085] Under normal conditions, the position locking protrusion 52 is positioned within a position locking groove 333 under the action of the position adjustment locking spring 53, preventing the instrument holder 21 from sliding along the flip frame 33. Pressing the position adjustment button 51 disengages the position locking protrusion 52 from the position locking groove 333, unlocking the device. Simultaneously, the position adjustment locking spring 53 compresses and stores energy, allowing the instrument holder 21 to slide along the flip frame 33 within a certain area. Once the desired position is reached, releasing the position adjustment button 51 causes the position locking protrusion 52 to re-engage with the position locking spring 53, locking the device. The instrument holder 21 can no longer slide along the flip frame 33. This allows for quick adjustment of the distance between the night vision device and the eye.

[0086] In one embodiment, the night vision device connection part 20 includes an instrument holder 21, the instrument holder 21 includes a holder base plate 213 and a dovetail groove side plate 214 and a dovetail groove movable side plate 215 disposed on the holder base plate 213. The holder base plate 213 is connected to the flip frame 33. The dovetail groove side plate 214 and the dovetail groove movable side plate 215 are spaced apart and form a trapezoidal dovetail groove 216 for mounting the night vision device.

[0087] The dovetail groove movable side plate 215 is slidably disposed on the card seat base plate 213 along the length direction of the trapezoidal dovetail groove 216. A shim mounting groove 2151 is provided on the side of the dovetail groove movable side plate 215 facing away from the card seat base plate 213. A strip hole 2153 is provided in the shim mounting groove 2151. The length direction of the strip hole 2153 is consistent with the sliding direction of the dovetail groove movable side plate 215. A threaded hole is provided on the card seat base plate 213 at the position corresponding to the strip hole 2153. The dovetail groove movable side plate 215 and the card seat base plate 213 are detachably connected by bolts passing through the strip hole 2153 and screwed into the threaded hole. Optionally, a strip-shaped gasket 2153 is provided within the gasket mounting groove 2151. The strip-shaped gasket 2153 has a circular hole corresponding to the threaded hole. The bolt passes through the circular hole of the strip-shaped gasket 2153 and the strip-shaped hole 2153 of the gasket mounting groove 2151, and then screws into the threaded hole of the card holder base plate 213 for fixation. Optionally, the sliding direction between the dovetail groove movable side plate 215 and the card holder base plate 213 is limited by a guide block and a guide groove; or, the sliding direction between the dovetail groove movable side plate 215 and the card holder base plate 213 is limited by a guide shaft and a guide hole; or a combination of the above two methods is used to limit the sliding direction.

[0088] Loosen the bolts and slide the dovetail groove movable side plate 215. Since the dovetail groove side plate 214 and the dovetail groove movable side plate 215 are connected by a trapezoidal dovetail groove 216, the width of the trapezoidal dovetail groove 216 changes after the dovetail groove movable side plate 215 slides along the length of the trapezoidal dovetail groove 216. This eliminates or reduces the influence of tolerances and machining errors, allowing the night vision device bracket to install various night vision devices and improving compatibility.

[0089] In one embodiment, the night vision device connection part 20 includes an instrument holder 21, a insert 22, and an instrument locking thrust spring 23. The instrument holder 21 is connected to the flip frame 33. A trapezoidal dovetail groove 216 is provided on the side of the instrument holder 21 facing away from the flip frame 33. One end of the instrument holder 21 is provided with a slot 217 extending along the length direction of the trapezoidal dovetail groove 216. A communicating cavity 218 is provided between the inward-facing section of the slot 217 and the trapezoidal dovetail groove 216. One end of the insert 22 is inserted into the slot 217, and the insert 22 is rotatably connected to the side wall of the slot 217 via a pivot. The inner end of the insert 22, facing the trapezoidal dovetail groove 216, has a protruding retaining strip 221 that matches the retaining groove of the dovetail connector of the night vision device. The protruding retaining strip 221 has a guide surface facing the larger end of the trapezoidal dovetail groove 216. The other end of the insert 22 is located outside the instrument holder 21. An instrument engaging thrust spring 23 is disposed within the slot 217 to provide thrust to the insert 22, causing the protruding retaining strip 221 to engage with the retaining groove of the dovetail connector of the night vision device.

[0090] When installing the night vision device, align the dovetail connector of the night vision device with the trapezoidal dovetail groove 216 of the bracket. As the night vision device is pushed inward, the solid part of the dovetail connector acts on the guide surface of the raised retaining strip 221, causing the strip 22 to swing around the pivot. When the groove of the dovetail connector aligns with the raised retaining strip 221, the strip 22 returns to its original position under the action of the instrument locking spring 23, and the raised retaining strip 221 engages with the groove. At this point, the night vision device is installed and cannot be removed. Pressing the outer end of the strip 22 will disengage the raised retaining strip 221 from the groove, allowing the night vision device to be removed. It can be seen that the insert plate in this embodiment is similar to a lever with a reset function.

[0091] Because not all individual low-light night vision devices use the same dovetail groove connection to the bracket, different dovetail groove night vision devices can only use brackets with specific dovetail grooves. This makes it impossible to quickly match multiple night vision devices with the same bracket. When a user switches from one type of night vision device to another, it means that the user needs to purchase a completely new bracket for the dovetail groove of the new night vision device, wasting costs. The multi-directional adjustable night vision device bracket provided in this embodiment adopts a modular design, which allows for quick disassembly of the night vision device connection part and replacement with a night vision device connection part that matches the corresponding dovetail groove or other snap-fit ​​structure. This allows the same bracket to be quickly modified and matched with different types of night vision devices.

[0092] In the description of this specification, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0093] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0094] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0095] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0096] The foregoing disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0097] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multi-directional adjustable night vision device bracket, characterized in that, include: Helmet connector for attaching to a helmet; Night vision device connector for mounting night vision devices; A flip-up connector is provided between the helmet connector and the night vision device connector; The flip connection includes a housing, a flip shaft, a flip frame, and a flip locking mechanism; the housing is connected to the helmet connection; the flip shaft is disposed inside the housing and can rotate relative to the housing; one end of the flip frame is connected to the night vision device connection, and the other end is connected to the end of the flip shaft; The flip-locking mechanism includes a limiting bushing, a fixed bushing, an unlocking push rod, a flip-unlocking button, and a locking block. The limiting bushing is fixedly sleeved on the flip shaft and has a locking groove and an unlocking groove, which are axially connected. The fixed bushing is fixed inside the housing and has a through-shaft hole. The unlocking push rod is slidably disposed in the through-shaft hole. The flip-unlocking button is disposed outside the housing and fixed to the outer end of the unlocking push rod. The locking block is fixed to the inner end of the unlocking push rod, and one end of the locking block is located in the locking groove or the unlocking groove.

2. The night vision device bracket according to claim 1, characterized in that, An ear plate is provided at one end of the flip frame near the housing. The ear plate is located on the side of the housing away from the flip unlock button. The flip frame is rotatably connected to the flip shaft through the ear plate. The flip connection also includes an angle fine-tuning mechanism, which includes a fine-tuning plate and a fine-tuning knob. The fine-tuning plate is disposed on the side of the ear plate away from the housing, and the fine-tuning plate is fixed to the end of the flip shaft. The fine-tuning knob includes a knob lug, a limiting plate fixed on the knob lug, a rotating moving plate fixed at the center of the limiting plate, and an eccentric shaft eccentrically disposed on the rotating moving plate. The fine-tuning plate is provided with an angle fine-tuning flat hole, the ear plate is provided with an angle fine-tuning actuation hole adapted to the eccentric shaft, the rotating moving disk is installed in the angle fine-tuning flat hole, the eccentric shaft passes through the angle fine-tuning actuation hole, the end of the eccentric shaft is screwed with a nut, and the ear plate and the fine-tuning plate are sandwiched between the nut and the limiting disk.

3. The night vision device bracket according to claim 1, characterized in that, The helmet connection part includes a plug-in slider, which is slidably connected to the shell. A screw mounting groove is provided on the side of the plug-in slider facing the shell, and a push button mounting groove is provided on the side of the shell facing the plug-in slider. A height adjustment mechanism is provided between the plug-in slider and the shell. The height adjustment mechanism includes a height adjustment screw, a height adjustment push button, a height adjustment locking block, and a height adjustment return spring. The height adjustment screw is fixed in the screw mounting groove. A portion of the height adjustment push button protrudes outside the housing, while the other portion is slidably disposed in the push button mounting groove. The height adjustment locking block is connected to the height adjustment push button, and is disposed in the screw mounting groove and located on one side of the height adjustment screw. The side of the height adjustment locking block facing the screw has a threaded surface adapted to the height adjustment screw. The height adjustment return spring is disposed in the push button mounting groove and is used to provide a thrust for the height adjustment push button to slide out of the housing.

4. The night vision device bracket according to claim 1, characterized in that, The helmet connection part includes a helmet holder and a buckle unlocking mechanism; The helmet holder is provided with a longitudinal locking tongue mounting cavity and a transverse wing plate mounting cavity. The locking tongue mounting cavity and the wing plate mounting cavity are perpendicular to each other and communicate with each other. The buckle unlocking mechanism includes a push block, a linkage locking tongue, an unlocking fin plate, and a locking return spring. The push block is slidably disposed within the locking tongue mounting cavity, and a locking tongue groove is provided on one side of the push block. A guide pressing surface is provided at the end of the push block facing the unlocking fin plate. The front end of the linkage locking tongue extends out of the helmet holder, the middle section is slidably mounted in the locking tongue groove, and a stop block abutting against the rear end of the push block is provided at the rear end. The middle section of the unlocking fin plate is slidably mounted in the fin plate mounting cavity, and both ends protrude from the helmet holder. A V-shaped groove adapted to the guide pressing surface is provided at the position of the unlocking fin plate facing the push block. The locking return spring is disposed within the locking tongue mounting cavity and is used to provide a pushing force for the linkage locking tongue to slide outward from the helmet holder.

5. The night vision device bracket according to claim 1, characterized in that, The night vision device connection part includes an instrument holder, which is slidably connected to the flip frame. A button mounting slot is provided on one side of the instrument holder, and a row of position locking slots is provided on one side of the flip frame corresponding to the button mounting slot. A position adjustment and locking mechanism is provided between the instrument holder and the flip frame. The position adjustment and locking mechanism includes a position adjustment button, a position locking protrusion, and a position adjustment and locking spring; A portion of the position adjustment button is located inside the button mounting slot, and another portion is located outside the button mounting slot. The middle part of the position adjustment button is rotatably connected to the instrument holder. The position locking protrusion is installed on the side of the position adjustment button facing the position locking slot; The position adjustment locking spring is disposed in the button mounting slot, and the position adjustment locking spring is used to provide a thrust to the part of the position adjustment button that is located in the button mounting slot so that the position locking protrusion engages with the position locking slot.

6. The night vision device bracket according to claim 1, characterized in that, The night vision device connection part includes an instrument holder, which includes a holder base plate and a dovetail groove side plate and a dovetail groove movable side plate disposed on the holder base plate. The holder base plate is connected to the flip frame. The dovetail groove side plate and the dovetail groove movable side plate are spaced apart and form a trapezoidal dovetail groove for mounting the night vision device. The dovetail groove movable side plate is slidably disposed on the card seat base plate along the length direction of the trapezoidal dovetail groove. A shim mounting groove is provided on the side of the dovetail groove movable side plate opposite to the card seat base plate. A strip hole is provided in the shim mounting groove. A threaded hole is provided on the card seat base plate at the position corresponding to the strip hole. The dovetail groove movable side plate and the card seat base plate are detachably connected by bolts passing through the strip hole and screwed into the threaded hole.

7. The night vision device bracket according to claim 1, characterized in that, The night vision device connection includes an instrument holder, a insert, and an instrument engagement thrust spring. The instrument holder is connected to the flip frame. A trapezoidal dovetail groove is provided on the side of the instrument holder away from the flip frame. One end of the instrument holder has a slot extending along the length of the trapezoidal dovetail groove. A communicating cavity is provided between the inward-facing section of the slot and the trapezoidal dovetail groove. One end of the insert is inserted into the slot. The insert is rotatably connected to the side wall of the slot. The inner end of the insert, facing the trapezoidal dovetail groove, has a protruding locking strip that matches the slot of the dovetail connector of the night vision device. The other end of the insert is located outside the instrument holder. The instrument engagement thrust spring is located in the slot and is used to provide thrust to the insert so that the protruding locking strip engages with the slot of the dovetail connector of the night vision device.

8. The night vision device bracket according to claim 1, characterized in that, The outer end of the fixed bushing is provided with a flip spring mounting cavity; the flip locking mechanism also includes a flip locking spring, which is installed in the flip spring mounting cavity and is used to provide a thrust for the unlocking push rod to move out of the housing.

9. The night vision device bracket according to claim 2, characterized in that, Both the housing and the fine-tuning plate are provided with a matching limiting lug. When the locking block is in the locking groove, the two limiting lugs are separated. When the flipping frame is flipped down, the two limiting lugs abut against each other.

10. The night vision device bracket according to claim 1, characterized in that, The helmet connection part includes a helmet holder and a plug-in slider. The helmet holder has multiple pairs of through holes, and the plug-in slider has multiple pairs of height adjustment threaded holes. The multiple pairs of through holes and the multiple pairs of height adjustment threaded holes are evenly distributed along the height direction. The number of pairs of height adjustment threaded holes is greater than the number of pairs of through holes. The helmet holder and the plug-in slider are connected by bolts, and the plug-in slider is connected to the shell.

Images