A size-adjustable wearable helmet

Abstract

The utility model discloses a size adjustment formula headwear belongs to the field of brain magnetic detection, and side module and top module slide connection and can relatively rotate, and side module is equipped with the tooth groove, and depth adjustment knob movable mounting is in top module, and the gear of depth adjustment knob is engaged with tooth groove, and depth adjustment knob rotates relatively top module to make side module slide to adjust the wearing depth of headwear relatively top module, and the circumference adjustment knob rotates and is installed in side module or connecting module, and flexible rope one end fixed and winding is in the circumference adjustment knob, and the other end of flexible rope is fixed in the other side module or connecting module, and the circumference adjustment knob is relative side module active to carry out locking or unlocking, through above -mentioned design, the depth and the circumference size of headwear can adjust, are suitable for different size, shape head type, and wear, and headwear and scalp close adhesion after, avoid head and headwear to produce displacement.

Description

Technical Field

[0001] This utility model relates to the field of magnetoencephalography (MEG) detection, and in particular to a size-adjustable wearable helmet. Background Technology

[0002] Magnetoencephalography (MEG) is a completely non-invasive method for detecting brain signals. Its basic principle involves placing extremely weak magnetic sensors on the outer side of the scalp to capture the weak magnetic fields generated by the firing of neurons in the brain. Currently, existing MEG sensors mainly utilize two technologies: superconducting quantum interference devices (SUQID) based on liquid helium superconductivity and optically pumped atomic magnetometers (OPM).

[0003] Because SUQID magnetoencephalography (MEG) requires liquid helium to maintain a superconducting state, it suffers from drawbacks such as high cost, large size, and expensive maintenance. Therefore, countries around the world are actively promoting the research and development of MEG based on atomic magnetometers.

[0004] Because the brain magnetic field signal is weak and extremely sensitive to the signal transmission distance, both SUQID and OPM technologies require the sensor to be as close as possible to the subject's scalp to ensure signal strength.

[0005] In practical implementation, the magnetic detection sensor needs to be placed on a helmet-like carrier. Existing helmets are fixed full-head MEG systems, which have the following drawbacks:

[0006] (1) In order to adapt to different sizes and shapes of head shapes of different ages and groups, fixed helmets are generally fixed and have a large volume. Although the sensor position is fixed, the distance between the sensor and the subject's scalp is too large (signal attenuation is large). In addition, the subject must remain still during the measurement process, so that the positional relationship between the sensor array and the subject's head must remain highly stable throughout the process. When the subject's head moves inside the fixed helmet, even millimeter-level (usually required <5mm) head movement will cause a serious distortion of the magnetic field distribution, resulting in source localization error, introducing huge motion artifacts, and causing the data quality to drop sharply or even become unusable.

[0007] (2) The helmet size is fixed and designed to fit the average head shape of most adults. For individuals with unusual head shapes, such as excessively large or small head circumferences, or unusual head shapes (e.g., certain skull deformities), the sensor cannot be evenly positioned near the scalp, leading to weakened or lost signals in some brain regions (especially the top of the head and infratemporal region). Increased sensor-scalp distance, coupled with poor fit, results in some sensors being too far from the scalp. Since magnetic field strength decreases with the square of the distance, this significantly reduces the signal-to-noise ratio (SNR), affecting the detection capability of deep or specific cortical areas. Data quality varies greatly among individuals, and some populations are excluded from the study. Utility Model Content

[0008] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a size-adjustable helmet that can keep the helmet in close contact with the scalp after being worn, and avoid displacement of the head and the helmet.

[0009] One of the objectives of this utility model is achieved through the following technical solution:

[0010] An adjustable-size helmet includes a top module, side modules, a depth adjustment knob, and a circumferential adjustment structure. The side modules are slidably connected to the top module and can rotate relative to it. The side modules have toothed grooves. The depth adjustment knob is movably mounted on the top module and includes a gear that meshes with the toothed groove. Rotation of the depth adjustment knob relative to the top module causes the side modules to slide relative to the top module to adjust the wearing depth of the adjustable-size helmet. The circumferential adjustment structure includes a flexible cord and a circumferential adjustment knob. The number of side modules is multiple, and / or the adjustable-size helmet also includes a connecting module connected to the top module and / or the side modules. The circumferential adjustment knob is rotatably mounted on the side module or the connecting module. One end of the flexible cord is fixed and wrapped around the circumferential adjustment knob, and the other end of the flexible cord is fixed to another side module or the connecting module. The circumferential adjustment knob moves relative to the side module to lock or unlock.

[0011] Furthermore, there are two side modules, which are located on opposite sides of the top module. Each side module includes an extension strip, and the tooth groove is disposed on the extension strip. The extension strips of the two side modules are stacked, and the tooth grooves of the two extension strips overlap. The gear is located in the two tooth grooves.

[0012] Furthermore, the circumferential adjustment knob is rotatably mounted on one of the side modules, the other end of the flexible rope is fixed to another of the side modules, and the middle of the flexible rope passes through the connecting module.

[0013] Furthermore, the depth adjustment knob also includes a cam, and the top module includes teeth. The cam engages with the teeth to circumferentially lock the depth adjustment knob relative to the top module.

[0014] Furthermore, the cam is coaxially arranged with the gear.

[0015] Furthermore, the depth adjustment knob also includes a first locking ball located at the end of the depth adjustment knob, and the top module is provided with a first locking hole, the first locking ball extending into the first locking hole to axially lock the depth adjustment knob to the top module.

[0016] Furthermore, the circumferential adjustment knob includes a second knob and a rotating component. The second knob is rotatably connected to the side module or connecting module, and the rotating component is axially movable to the second knob.

[0017] Furthermore, the second knob is provided with a second locking hole, and the rotating component includes a second locking ball, which extends into the second locking hole to axially lock the second knob with the rotating component.

[0018] Furthermore, the second knob includes a first one-way tooth, and the rotating component includes a second one-way tooth. The first one-way tooth engages with the second one-way tooth to circumferentially lock the second knob and the rotating component.

[0019] Furthermore, the top module is provided with a slide groove, and the side module includes a rotating shaft, which is located in the slide groove and can slide along the slide groove. The rotating shaft rotates in the slide groove to adjust the circumferential size of the size-adjustable wearable helmet.

[0020] Compared to existing technologies, this utility model's size-adjustable wearable helmet includes a top module, side modules, a depth adjustment knob, and a circumferential adjustment structure. The side modules are slidably connected to the top module and can rotate relative to it. The side modules have toothed grooves. The depth adjustment knob is movably mounted on the top module and includes a gear that meshes with the toothed groove. Rotation of the depth adjustment knob relative to the top module causes the side modules to slide relative to the top module to adjust the wearing depth of the size-adjustable wearable helmet. The circumferential adjustment structure includes a flexible cord and a circumferential adjustment knob. The number of side modules is... Multiple and / or size-adjustable wearable helmets also include a connecting module that connects to a top module and / or a side module. A circumferential adjustment knob is rotatably mounted on the side module or the connecting module. One end of a flexible cord is fixed and wrapped around the circumferential adjustment knob, and the other end of the flexible cord is fixed to another side module or the connecting module. The circumferential adjustment knob moves relative to the side module to lock or unlock. With the above design, the depth and circumferential size of the helmet can be adjusted to suit different head sizes and shapes. After wearing, the helmet fits tightly against the scalp, preventing displacement of the head from the helmet. Attached Figure Description

[0021] Figure 1 This is a perspective view of the size-adjustable wearable helmet of this utility model;

[0022] Figure 2 for Figure 1 Another perspective stereoscopic view of the size-adjustable wearable helmet;

[0023] Figure 3 for Figure 1 A three-dimensional view of a partial structure of a size-adjustable wearable helmet;

[0024] Figure 4 for Figure 3 A 3D view of the top module of a size-adjustable wearable helmet;

[0025] Figure 5 for Figure 3 A partial three-dimensional view of the depth adjustment knob of a size-adjustable wearable helmet;

[0026] Figure 6 for Figure 3 Cross-sectional view of the depth adjustment knob unlocked in the size-adjustable wearable helmet;

[0027] Figure 7 for Figure 3 Cross-sectional view of the depth adjustment knob in the locked state of a size-adjustable wearable helmet;

[0028] Figure 8 for Figure 1 Another partial three-dimensional view of the size-adjustable wearable helmet;

[0029] Figure 9 for Figure 1 A three-dimensional diagram of the circumferential adjustment structure of a size-adjustable wearable helmet;

[0030] Figure 10 for Figure 1 A 3D view of the internal structure of a size-adjustable wearable helmet;

[0031] Figure 11 for Figure 9 An exploded view of the circumferential adjustment knob of the circumferential adjustment structure;

[0032] Figure 12 for Figure 11 An exploded view of the circumferential adjustment knob from another perspective;

[0033] Figure 13 for Figure 1 A cross-sectional view of a size-adjustable wearable helmet;

[0034] Figure 14 for Figure 13 Enlarged view of section A of the size-adjustable wearable helmet.

[0035] In the diagram: 10. Top module; 11. Main body; 110. Mounting hole; 111. Tooth; 12. First connecting part; 120. First slide groove; 13. Second connecting part; 130. Second slide groove; 14. First locking hole; 20. Side module; 21. Extension bar; 210. Tooth groove; 22. Rotating shaft; 30. Depth adjustment knob; 31. First knob; 32. Rod body; 33. First locking ball; 34. Cam; 35. Gear; 40. Connecting module; 50. Circumferential adjustment structure; 51. Circumferential adjustment knob; 510. Second knob; 5101. Second locking hole; 5102. First one-way tooth; 511. Rotating part; 5110. Second locking ball; 5111. Second one-way tooth; 5112. Winding part; 52. Flexible rope. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] This utility model is a size-adjustable wearable helmet used to capture the weak magnetic field generated after the brain neurons fire using an optically pumped atomic magnetometer (OPM), thereby achieving non-invasive detection of brain signals.

[0040] Please see Figures 1 to 2This utility model of a size-adjustable wearable helmet includes a top module 10, a side module 20, a depth adjustment knob 30, a connecting module 40, and a circumferential adjustment structure 50. In other embodiments, the same effect can be achieved by increasing the circumferential dimension of the side module 20, thereby eliminating the need for the connecting module 40.

[0041] Please see Figure 3 as well as Figure 4 The top module 10 includes a main body 11, a first connecting part 12, a second connecting part 13, and a first locking hole 14. The main body 11 is located at the top of the helmet, and the first connecting part 12 and the second connecting part 13 are located at both ends of the main body 11. The first connecting part 12 is provided with a first sliding groove 120, and the second connecting part 13 is provided with a second sliding groove 130. The first sliding groove 120 and the second sliding groove 130 extend in the same direction. The first locking hole 14 is located between the first connecting part 12 and the second connecting part 13. The main body 11 is provided with a mounting hole 110 and teeth 111. The mounting hole 110 is used to install a depth adjustment knob 30. The mounting hole 110 and the first locking hole 14 are coaxially arranged, and the first locking hole 14 is located at the bottom of the mounting hole 110. The depth adjustment knob 30 can move axially (in the height direction) within the mounting hole 110 to disengage from or engage with the first locking hole 14, thereby unlocking or locking the main body 11 axially. The depth adjustment knob 30 can rotate within the mounting hole 110, thereby driving the side module 20 to move relative to the top module 10, thus adjusting the helmet depth (height direction). Teeth 111 are located around the mounting hole 110 and engage with the cam 34 of the depth adjustment knob 30 to achieve circumferential locking of the depth adjustment knob 30.

[0042] Please see Figure 8 as well as Figure 13 The side module 20 includes an extension strip 21 and a rotating shaft 22. The extension strip 21 has a toothed groove 210, which meshes with the gear 35 of the depth adjustment knob 30, allowing the arc of the side module 20 and the top module 10 to be lengthened / shortened to control the depth of the helmet covering the wearer's head in the Z direction. The rotating shaft 22 is located in the slide groove 130 of the top module 10, and moves and rotates along the slide groove 130. When the side module 20 slides relative to the top module 10, the rotating shaft 22 moves relative to the slide groove 130; when the side module 20 rotates relative to the top module 10, the rotating shaft 22 rotates relative to the slide groove 130.

[0043] Please continue reading. Figure 5 , Figure 6 as well as Figure 7The depth adjustment knob 30 includes a first knob 31, a rod 32, a first locking ball 33, a cam 34, and a gear 35. The first knob 31 is fixedly connected to the rod 32, which extends axially. The first locking ball 33 is located at the end of the rod 32. The cam 34 and the gear 35 are coaxially arranged, with the gear 35 located between the cam 34 and the first locking ball 33. The first locking ball 33 extends into the first locking hole 14 to axially lock the depth adjustment knob 30 with the top module 10. Specifically, the diameter of the first locking ball 33 is larger than the diameter of the first locking hole 14, and the edge of the first locking hole 14 has a gap to facilitate the first locking ball 33 being squeezed into the first locking hole 14. When the cam 34 engages with the gear 111, the depth adjustment knob 30 is circumferentially locked relative to the top module 10. The gear 35 is located in the tooth groove 210 of the side modules 20. When the depth adjustment knob 30 rotates, the gear 35 engages with the rack at the edge of the tooth groove 210, driving the side modules 20 to move.

[0044] The connecting module 40 is used to connect the two side modules 20, and the connecting module 40 and the side modules 20 together form the side of the helmet.

[0045] Please continue reading. Figure 9 as well as Figure 10 The circumferential adjustment structure 50 includes a circumferential adjustment knob 51 and a flexible rope 52. One end of the flexible rope 52 is fixedly wound around the circumferential adjustment knob 51, and the other end of the flexible rope 52 passes through the connecting module 40 and is fixed to another side module 20. When the flexible rope 52 is tightened, it causes the side module 20 to rotate relative to the top module 10, thereby adjusting the circumferential dimensions. In other embodiments, the circumferential adjustment knob 51 can also be installed on the connecting module 40, and the flexible rope 52 passes through the side module 20 and is fixed to another connecting module 40. In this embodiment, there are two flexible ropes 52, located on opposite sides of the circumferential adjustment knob 51. Each flexible rope 52 has one end wound around the circumferential adjustment knob 51, and the other end passes through the connecting module 40 and the side module 20 before winding back to form a double-strand structure.

[0046] Please continue reading. Figure 11 , Figure 12 , Figure 13 as well as Figure 14 The circumferential adjustment knob 51 includes a second knob 510 and a rotating component 511. The second knob 510 is provided with a second locking hole 5101 and a first one-way tooth 5102. The second locking hole 5101 is used to axially lock the rotating component 511. The first one-way tooth 5102 is used to circumferentially lock the rotating component 511.

[0047] The rotating component 511 includes a second locking ball 5110, a second one-way tooth 5111, and a winding portion 5112. The second locking ball 5110 is located at the far end of the rotating component 511 and extends into the second locking hole 5101 to engage with it, thereby achieving axial locking between the rotating component 511 and the second knob 510. The second one-way tooth 5111 meshes with the first one-way tooth 5102, axially locking the rotating component 511 and the second knob 510, allowing only unidirectional rotation. The winding portion 5112 is used to wind and secure the flexible rope 52.

[0048] When using the size-adjustable helmet, pull up the depth adjustment knob 30 to unlock it from the top module 10; pull down the circumferential adjustment knob 51 to unlock it from the side module 20; grasp each side module 20 and pull them outwards relative to the top module 10 to maximize the helmet's dimensions in all three directions. During this pulling process, the pivot 22 of the side module 20 slides within the first groove 120 until it reaches its end, allowing the side module 20 to rotate relative to the top module 10, i.e., the pivot 22 rotates within the first groove 120, adjusting the circumferential dimensions. The rotation angle of the side module 20 is limited by the maximum head circumference of the flexible cord 52.

[0049] Put the helmet on your head, then press the depth adjustment knob 30. The first locking ball 33 extends into the first locking hole 14, axially locking the depth adjustment knob 30 with the top module 10. At this time, the cam 34 engages with the tooth 111, circumferentially locking the depth adjustment knob 30 with the top module 10. Rotate the depth adjustment knob 30, and the gear 35 engages with the tooth groove 210. The rotation of the gear 35 causes the side module 20 to slide closer to the top module 10, reducing the helmet depth. Tighten it to the appropriate position, and the helmet depth adjustment is complete. Press the second knob 510, and the second locking hole 5101 and the second locking ball 5110 engage, axially locking the second knob 510 with the rotating part 511 so that they can rotate together. At this time, the second one-way tooth 5111 engages with the first one-way tooth 5102, and the circumferential adjustment knob 51 can only rotate in the direction of tightening the flexible rope 52. Rotate the circumferential adjustment knob 51 to tighten the flexible cord 52 connecting the left and right sides of the helmet, and adjust the helmet's head circumference size, i.e., the X and Y dimensions, according to the wearer's head shape.

[0050] This application's size-adjustable wearable helmet features adjustable depth and circumference, precisely matching head circumferences from children to adults (typically covering 40cm-65cm and above). Size adjustment after wearing ensures each OPM sensor fits snugly against the scalp (distance controllable within 3-5mm), overcoming the "gap" problem caused by the fixed size of traditional MEG helmets. Close proximity of the sensors to the scalp increases signal strength several times (theoretically 4-25 times), particularly enhancing the detection capabilities of deep brain regions (such as the hippocampus and amygdala) and the cerebellum.

[0051] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A size-adjustable wearable helmet, comprising a top module, characterized in that: The size-adjustable helmet also includes a side module, a depth adjustment knob, and a circumferential adjustment structure. The side module is slidably connected to the top module and can rotate relative to it. The side module has a toothed groove. The depth adjustment knob is movably mounted on the top module and includes a gear that meshes with the toothed groove. Rotating the depth adjustment knob relative to the top module causes the side module to slide relative to the top module to adjust the wearing depth of the size-adjustable helmet. The circumferential adjustment structure includes a flexible cord and a circumferential adjustment knob. There may be multiple side modules and / or the size-adjustable helmet may also include a connecting module. The connecting module is connected to the top module and / or the side module. The circumferential adjustment knob is rotatably mounted on the side module or the connecting module. One end of the flexible cord is fixed and wrapped around the circumferential adjustment knob, and the other end of the flexible cord is fixed to another side module or the connecting module. The circumferential adjustment knob moves relative to the side module to lock or unlock.

2. The size-adjustable wearable helmet according to claim 1, characterized in that: The number of side modules is two, and the two side modules are respectively located on both sides of the top module. Each side module includes an extension strip, and the tooth groove is disposed on the extension strip. The extension strips of the two side modules are stacked, the tooth grooves of the two extension strips overlap, and the gear is located in the two tooth grooves.

3. The size-adjustable wearable helmet according to claim 2, characterized in that: The circumferential adjustment knob is rotatably mounted on one of the side modules, the other end of the flexible rope is fixed to another side module, and the middle of the flexible rope passes through the connecting module.

4. The size-adjustable wearable helmet according to claim 1, characterized in that: The depth adjustment knob also includes a cam, and the top module includes teeth. The cam engages with the teeth to lock the depth adjustment knob circumferentially relative to the top module.

5. The size-adjustable wearable helmet according to claim 4, characterized in that: The cam is coaxially arranged with the gear.

6. The size-adjustable wearable helmet according to claim 1, characterized in that: The depth adjustment knob also includes a first locking ball located at the end of the depth adjustment knob. The top module is provided with a first locking hole, and the first locking ball extends into the first locking hole to axially lock the depth adjustment knob to the top module.

7. The size-adjustable wearable helmet according to claim 1, characterized in that: The circumferential adjustment knob includes a second knob and a rotating component. The second knob is rotatably connected to the side module or the connecting module, and the rotating component is axially movable to the second knob.

8. The size-adjustable wearable helmet according to claim 7, characterized in that: The second knob is provided with a second locking hole, and the rotating component includes a second locking ball, which extends into the second locking hole to axially lock the second knob with the rotating component.

9. The size-adjustable wearable helmet according to claim 7, characterized in that: The second knob includes a first one-way tooth, and the rotating component includes a second one-way tooth. The first one-way tooth engages with the second one-way tooth to circumferentially lock the second knob and the rotating component.

10. The size-adjustable wearable helmet according to claim 1, characterized in that: The top module is provided with a slide groove, and the side module includes a rotating shaft. The rotating shaft is located in the slide groove and can slide along the slide groove. The rotating shaft rotates in the slide groove to adjust the circumferential size of the size-adjustable wearable helmet.

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