Head-mounted detection equipment convenient to adjust

Abstract

The invention belongs to the field of head-mounted detection, and particularly relates to a head-mounted detection device convenient to adjust, which comprises a cap body, a flexible inner cap is sleeved in the cap body, a screw assembly is arranged in the middle of the top of the cap body, the screw assembly comprises a screw, the screw penetrates through the cap body and is in threaded connection with the cap body, and the cap body is in threaded connection with the screw assembly. The lower portion of the screw assembly is rotationally connected with a fixing assembly, the inner cap is fixed to the fixing assembly, a plurality of arc-shaped steel bars are evenly distributed on the outer side of the inner cap, the steel bars are annularly distributed with the top of the inner cap as the center, and one ends of the steel bars are fixed to the fixing assembly. An annular plate is fixed to the lower middle portion of the inner wall of the cap body, the multiple steel bars are located in an inner ring of the annular plate, and the outer sides of the steel bars are tightly attached to the inner ring wall of the annular plate; a plurality of electrode plates are arranged on the inner side wall of the inner cap, a worker rotates a screw assembly on the cap body to drive a fixing assembly, a steel bar and an annular plate are matched to tighten the head of a user, and adjustment of the heads of different wearers is met.

Description

Technical Field

[0001] The present invention relates to the field of head-mounted detection, in particular to a head-mounted detection device which is easy to adjust. Background Art

[0002] Mental test is to quantify people's cognitive, behavioral and emotional psychological activities according to certain rules and psychological principles, using certain operating procedures. Psychological test is a tool for psychological measurement. Psychological measurement can help clients understand their emotions, behavior patterns and personality characteristics in psychological counseling. Common psychological tests are tested through head-mounted detection equipment. In the paper "Research on the Design of Wearable Mental Health Fatigue Detector Based on Frontal EEG Signal Artifact Removal" published by Juhua et al., it is disclosed that "in order to effectively remove frontal EEG artifact signals and effectively detect students' psychological states, the wearable detector is improved and optimized, and the effective detection of EEG signals is achieved by introducing a fast optimization iterative algorithm. Finally, a wearable detector for college students' mental health fatigue detection is designed."

[0003] When using the existing head-mounted devices, there will be a problem of a large gap between the head and the head-mounted devices. For example, when using the head-mounted devices, due to differences in the head sizes of the wearers, the head-mounted devices cannot completely fit the wearer's head, causing errors in the detection data, and it is impossible to effectively obtain accurate data, which affects the misjudgment of the subject's head detection. Summary of the invention

[0004] In order to solve the technical problem that the existing head-mounted device is not convenient to adjust due to the difference in head sizes of wearers, so that the head-mounted device does not fit the wearer's head tightly, the present invention provides an easily adjustable head-mounted detection device, which is convenient for the wearer to adjust according to the dimensions of his own head when using the device.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a head-mounted detection device that is easy to adjust, comprising a cap body, a flexible inner cap sleeved in the cap body, a screw assembly arranged in the middle of the top of the cap body, the screw assembly comprising a screw, the screw passing through the cap body and being threadedly connected to the cap body, a fixing assembly being rotatably connected to the lower part of the screw assembly, the inner cap being fixed to the fixing assembly, a plurality of arc-shaped steel bars being evenly arranged on the outside of the inner cap, the plurality of the steel bars being distributed in a ring shape with the top of the inner cap as the center, and one end of the plurality of the steel bars being fixed to the fixing assembly; the screw is threadedly connected to the cap body, and drives the fixing assembly to rise during the rotation process, and the function of the steel bar is to fix the head of the user when the device is worn.

[0006] An annular plate is fixed to the lower middle part of the inner wall of the cap body, and the multiple steel bars are located in the inner ring of the annular plate and the outer sides of the steel bars are close to the inner ring wall of the annular plate; the function of the annular plate is to make the area surrounded by the multiple steel bars shrink inward or expand outward.

[0007] The inner wall of the inner cap is provided with a plurality of electrode sheets. The electrode sheets provided on the inner side of the inner cap are used for detecting the human head.

[0008] Preferably, the screw assembly further comprises a handle and a first circular plate, the handle being fixed to the top of the screw, the first circular plate being fixed to the bottom of the screw, and an annular groove body being provided on the upper surface of the first circular plate, a plurality of balls being arranged in the annular groove body, the balls rolling along the annular groove body, and the first circular plate being embedded in the fixed assembly and rotatably connected. The function of the first circular plate is to support the fixed assembly and drive it to rise, and the balls are convenient for the first circular plate to reduce friction on the fixed assembly when rotating, so as to avoid driving the fixed assembly to rotate when the screw assembly rotates.

[0009] Preferably, the fixing assembly comprises a second circular plate, a cover plate and a cylinder with a T-shaped vertical section, a groove is provided on the top of the cylinder, the first circular plate is placed in the groove, a cover plate is provided on the top of the cylinder, a through hole is provided in the middle of the cover plate for the screw to pass through, the second circular plate is fixedly arranged at the bottom of the cylinder, and one end of a plurality of steel bars is fixed to the side wall of the cylinder. The purpose of arranging the cylinder with a T-shaped vertical section is to provide a space for the first circular plate to rotate and to increase the area of ​​force applied to the fixing assembly during the process of the screw assembly lifting the fixing assembly.

[0010] Preferably, the fixing assembly further comprises at least two elastic buckles, a connecting block is fixed on the cover plate, the buckle is C-shaped and the top is hinged to the connecting block, and the buckle is engaged with the top of the cylinder. The buckle is used to strengthen the fixing of the cover plate to prevent the cover plate from being separated when the screw assembly is pulling the fixing assembly, forcing the fixing assembly to disconnect from the screw assembly and affecting the lifting adjustment function.

[0011] Preferably, a through hole is provided on the top of the inner cap, and the inner cap is sleeved on the outer side of the cylinder through the through hole. The through hole is provided on the top of the inner cap for sleeve connection on the cylinder to fix the inner cap.

[0012] Preferably, the head-mounted detection device also includes a limit assembly, which includes a circular ring, a plurality of vertical rods and a soft pad, the top of the circular ring is fixed to the inner wall of the top of the cap body, and a through hole for passing a screw is opened in the middle of the circular ring; the limit assembly is used to prevent the fixing assembly from rotating when the screw assembly rotates.

[0013] The plurality of vertical rods are evenly arranged at the bottom of the ring in a ring shape, and the lower parts of the plurality of vertical rods are fixedly connected to the cushion. The vertical rods are used to limit the position of the fixing assembly and the inner cap, and the cushion is used to cooperate with the inner cap to adapt to the space of the human head.

[0014] Preferably, a spring is fixedly arranged at the bottom of each of the plurality of vertical rods, a fixing plate is fixedly connected to the bottom of the spring, and the fixing plate is fixedly connected to the cushion. The spring is used to increase the comfort of the cushion when it fits against the top of the human head.

[0015] Preferably, a fixing belt is provided between each of the steel bars and the inner cap, the two ends of the fixing belt are fixed to the surface of the inner cap, and the steel bar passes through the gap between the fixing belt and the inner cap; the fixing serves to limit the position of the steel bar.

[0016] Each of the steel bars is provided with a plurality of steel balls, and each electrode sheet corresponds to a steel ball on its outer side. The purpose of each steel ball corresponding to the electrode sheet is to increase the force of the steel ball on the electrode sheet when each steel bar contracts.

[0017] Preferably, a plurality of brackets are arranged on the top of the annular plate, the plurality of brackets are arranged in an annular shape and correspond to the positions of the plurality of steel bars, a roller is rotatably arranged on each of the plurality of brackets, the side wall of the roller is concave in an arc shape, the steel bar is located at the arc of the roller and is in close contact with the side wall of the roller. The annular plate is used to shrink the arc steel bar, and the steel bar is located at the arc of the roller and is in close contact with the side wall of the roller to prevent the steel bar from deflecting.

[0018] Preferably, the rear wall of the cap body is provided with a through slot for the electrode sheet circuit to pass through, and the purpose of providing the through slot is to prevent the connection wires from being scattered.

[0019] Through the above technical solution, the beneficial effects of the present invention are: 1. When the wearer is wearing the head-mounted detection device during the detection process, the staff drives the fixing assembly to rise by turning the screw on the screw assembly. Since the fixing assembly is connected to the inner cap, the inner cap also rises. The outer cover of the rising inner cap is provided with a plurality of steel bars. When the plurality of steel bars pass through the annular plate on the inner side of the cap body, the plurality of steel bars contract, so that the plurality of steel bars are in a tightened state against the user's head. Conversely, they begin to expand after falling, thereby satisfying the adjustment requirements for the heads of different wearers.

[0020] 2. The vertical rod is fixed to the cap body through a ring, so the vertical rod can prevent the fixed component from rotating, and the position of the cushion at the bottom of the vertical rod does not change, fitting the user's head.

[0021] 3. When the multiple steel bars are shrinking, the steel balls on the steel bars can press the corresponding electrode sheets on the inner cap to the head, so that the electrode sheets fit the wearer's head better and prevent inaccurate test data due to poor fit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a head adjustment device of the present invention Figure 1 .

[0023] Figure 2 A schematic diagram of the structure of a head adjustment device of the present invention Figure 2 .

[0024] Figure 3 A schematic diagram of the structure of a head adjustment device of the present invention Figure 3 .

[0025] Figure 4 A schematic diagram of the structure of a head adjustment device of the present invention Figure 4 .

[0026] Figure 5 A schematic diagram of the structure of a head adjustment device of the present invention Figure 5 .

[0027] Figure 6 A schematic diagram of the structure of a head adjustment device of the present invention Figure 6 .

[0028] The reference numerals in the accompanying drawings are: 1-cap body, 2-screw assembly, 3-fixing assembly, 4-inner cap, 5-limiting assembly; 11-nut, 12-ring, 13-vertical rod, 15-spring, 16-fixing plate, 17-cushion; 21-handle, 23-screw, 24-first circular plate, 25-ball; 30-cylinder, 32-steel bar, 33-steel ball, 34-second round plate, 36-cover plate, 37-connecting block, 38-buckle; 44-fixing belt; 50- annular plate, 51- bracket, 52- roller. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods: In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] like Figure 1 to Figure 6A head-mounted detection device that is easy to adjust is shown, comprising a cap body 1, a flexible inner cap 4 is sleeved in the cap body 1, a screw assembly 2 is arranged in the middle of the top of the cap body 1, the screw assembly 2 includes a screw 23, the screw 23 passes through the cap body 1 and is threadedly connected to the cap body 1, the lower part of the screw assembly 2 is rotatably connected to a fixing assembly 3, the inner cap 4 is fixed to the fixing assembly 3, a plurality of arc-shaped steel bars 32 are evenly arranged on the outer side of the inner cap 4, and the plurality of arc-shaped steel bars 23 form a structure similar to an octopus head massager, the steel bars 32 are steel bars with a certain elasticity, and the plurality of the steel bars 32 are distributed in a ring around the top of the inner cap 4, and the steel bars 32 are arranged in a ring for wrapping the inner cap 4 so that a person directly contacts the inner cap 4 when wearing it, and one end of the plurality of the steel bars 32 is fixed to the fixing assembly 3; As an implementable embodiment, a nut 11 is fixedly provided on the cap body 1 , and the screw rod 23 passes through the nut 11 and is threadedly connected to the nut 11 .

[0031] An annular plate 50 is fixed to the middle and lower part of the inner wall of the cap body 1, and the plurality of steel bars 32 are located in the inner ring of the annular plate 50 and the outer side of the steel bars 32 is close to the inner ring wall of the annular plate 50. The diameter of the circle surrounded by the middle and lower parts of the plurality of steel bars 32 is larger than the diameter of the inner ring wall of the annular plate 50. When the steel bars 32 are raised, they will be affected by the fixed diameter of the annular plate 50 and shrink. The inner wall of the inner cap 4 is provided with a plurality of electrode sheets.

[0032] As an embodiment, the screw assembly 2 further includes a handle 21 and a first circular plate 24, wherein the handle 21 is fixed to the top of the screw 23, the first circular plate 24 is fixed to the bottom of the screw, and an annular groove is provided on the upper surface of the first circular plate 24, the annular groove is located between the screw 23 and the outer circle of the first circular plate 24, a plurality of balls 25 are arranged in the annular groove, the balls 25 roll along the annular groove, the tops of the plurality of balls 25 contact the bottom of the cover plate 36, and when the first circular plate 24 rotates, the balls 25 at the top rotate along the bottom of the cover plate 36; the first circular plate 24 is embedded in the fixing assembly 3 and is rotatably connected. The handle 21 includes a lower plate and an upper plate vertically arranged on the lower plate, so that the cross section of the handle 21 is in an inverted "T" shape, which is convenient for the operator to use.

[0033] As an implementable embodiment, the fixing assembly 3 includes a second circular plate 34, a cover plate 36 and a cylinder 30 with a T-shaped vertical section. A groove is provided at the top of the cylinder 30, the first circular plate 24 is placed in the groove, a cover plate 36 is provided at the top of the cylinder 30, the cover plate 36 is symmetrically semi-arc-shaped, a through hole is provided in the middle of the cover plate 36 for the screw 23 to pass through, which does not affect the rotation of the screw 23. When the cover plate 36 is used, it is butted and assembled into a full circle, the diameter of the full circle is equal to the diameter of the top of the cylinder 30, and can completely cover the groove at the top of the cylinder 30. The second circular plate 34 is fixedly arranged at the bottom of the cylinder 30, and one end of a plurality of steel bars 32 is fixed to the side wall of the cylinder 30. Specifically, an annular groove (not shown) is provided on the lower surface of the cover plate 36, which corresponds to the annular groove body on the upper surface of the first circular plate 24, and the ball 25 is located between the annular groove and the annular groove body to prevent the ball 25 from falling out. The distance between the bottom surface of the first circular plate 24 and the upper surface of the groove of the cylinder 30 is smaller than the diameter of the ball 25 .

[0034] As an implementation method, the fixing assembly 3 further includes at least two or more elastic buckles 38, which are made of elastic-plastic material and are easy to buckle to the T-shaped surface of the cylinder 30 during operation. The cover plate 36 is fixed with a connecting block 37, which is a pair of parallel and symmetrical square blocks, and is arranged in a ring at the top of the cover plate 36 in 4 groups, and each group of connecting blocks 37 is hinged with a buckle 38, which is C-shaped and hinged to the connecting block 37 at the top, and the buckle 38 is engaged with the top of the cylinder 30. Specifically, the buckle 38 engages the cover plate 36 with the top surface of the cylinder 30 through the concave part of the C-shaped surface. When the cover plate 36 is covered with the cylinder 30, its height is consistent with the height of the concave part of the C-shaped surface of the buckle 38. When the buckle 38 is used to fix the cover plate 36, it only needs to be buckled down, otherwise it needs to be bent up.

[0035] As an implementation method, a through hole is formed on the top of the inner cap 4, and the inner cap 4 is sleeved on the outside of the cylinder 30 through the through hole. Specifically, the diameter of the through hole on the top of the inner cap 4 is consistent with the outer diameter of the cylinder 30.

[0036] As an implementable embodiment, the head-mounted detection device further includes a limit assembly 5, which includes a circular ring 12, a plurality of vertical rods 13 and a cushion 17. The top of the circular ring 12 is fixed to the inner wall of the top of the cap body 1. The vertical cross-section of the circular ring 12 is in an inverted T shape, which is convenient for matching with the arc-shaped space at the top of the cap body 1. A through hole for passing a screw 23 is opened in the middle of the circular ring 12. The diameter of the through hole in the middle of the circular ring 12 is larger than the outer diameter of the screw 23, and does not affect the up and down movement of the screw 23. The plurality of vertical rods 13 are evenly arranged in a ring shape at the bottom of the circular ring 12, the top of each vertical rod 13 is fixed between the inner ring and the outer ring of the circular ring 12, and the lower parts of the plurality of vertical rods 13 are fixedly connected to the cushion 17, the cushion 17 is circular, and the vertical cross section of the cushion 17 is trapezoidal, and the bottom of the trapezoidal cross section of the cushion 17 is provided with a concave surface, which is suitable for the convex surface of the top of the human head. The top of the inner cap 4 is also provided with a plurality of circular holes, the number of which is the same as the number of vertical rods 13, and the vertical rods 13 pass through the circular holes on the inner cap 4.

[0037] As an implementable embodiment, a spring 15 is fixedly provided at the bottom of each vertical rod 13 , a fixing plate 16 is fixedly connected to the bottom of the spring 15 , and the fixing plate 16 is fixedly connected to the cushion 17 .

[0038] As an implementation method, a fixing belt 44 is provided between each of the steel bars 32 and the inner cap 4, and both ends of the fixing belt 44 are fixed to the surface of the inner cap 4, and the steel bar 32 passes through the gap between the fixing belt 44 and the inner cap 4; A plurality of steel balls 33 are arranged on each of the steel bars 32, and a steel ball corresponds to the outer side of each electrode sheet. Specifically, the fixing belt 44 includes an upper belt body and a lower belt body, and there is a gap between the upper belt body and the lower belt body. The steel bar 32 is located between the upper belt body and the lower belt body, and a through hole for the steel ball 33 to pass through is arranged in the middle of the lower belt body, and the two ends of the upper belt body and the lower belt body are bonded by Velcro, and the two ends of the lower belt body and the outer layer of the inner cap 4 are also bonded by Velcro, so that the steel bar 32 is fixedly connected to the inner cap 4.

[0039] As an implementable embodiment, a plurality of brackets 51 are arranged on the top of the annular plate 50, and the annular plate 50 is an annular plate 50 with an inverted L-shaped vertical section. The L-shaped vertical edge of the annular plate 50 is fixed to the inner side wall of the cap body 1 by bolts. The plurality of brackets 51 are arranged in an annular shape and correspond to the positions of the plurality of steel bars 32. The plurality of brackets 51 are rotatably provided with rollers 52, and the side walls of the rollers 52 are concave in an arc shape. The steel bar 32 is located at the arc of the roller 52 and is close to the side wall of the roller 52. Specifically, the inner ring diameter surrounded by the plurality of rollers 52 is smaller than the inner ring diameter of the annular plate 50, and the steel bar 32 rises along the roller 52. The rotating roller 52 reduces the friction resistance of the steel bar 32 when it rises, and further shrinks the diameter of the steel bar 32 faster. The steel bar 32 is located at the arc of the roller 52 and is close to the side wall of the roller 52 to prevent the steel bar 32 from deflecting.

[0040] As an implementation method, the rear wall of the cap body 1 is provided with a through slot for the electrode sheet line to pass through. Specifically, a square through slot is provided at the middle and lower end of the rear wall of the cap body 1 to facilitate the passing of the connecting wires of the electrode sheet to gather and store them, thereby avoiding the connecting wires from being entangled with each other.

[0041] The specific working mode of the present invention is: When the wearer uses the device, he first puts the device on his head, and then the staff rotates the handle 21 on the cap body 1. The rotating handle 21 rotates the screw 23 and the screw 23 moves upward. The rotating screw 23 drives the first circular plate 24 fixedly connected at the bottom to rotate and move upward. The first circular plate 24 is embedded in the groove of the cylinder 30 and rotates in the groove. Because the first circular plate 24 is placed with a ball 25, it is easy to rotate. Therefore, the rotation of the screw 23 can drive the cylinder 30 to move upward. Because the cylinder 30 is connected with a plurality of steel bars 32 arranged in an annular shape, the rise of the cylinder 30 will drive each steel bar 32 to rise, and the inner ring of each steel bar 32 is wrapped with an inner cap 4. The plurality of steel bars 32 are located in the inner ring of the annular plate 50 and the outer side of the steel bars 32 is close to the inner ring wall of the annular plate 50. Therefore, when the steel bars 32 rise, the middle and lower parts of the steel bars 32 are limited and contracted by the annular plate 50, thereby achieving the effect of tightening the wearer's head.

[0042] Because a plurality of electrode sheets are arranged on the inner side of the inner cap 4, and a plurality of steel balls 33 on the steel bar 32 correspond to the electrode sheets, when the steel bar 32 is tightened, the steel balls 33 apply pressure to the electrode sheets, so that the electrode sheets further fit the wearer's head.

[0043] When the cylinder 30 rises, the multiple vertical rods 13 on the top ring 12 of the cap body 1 pass through the second circular plate 34 to prevent the cylinder 30 from rotating. The bottoms of the multiple vertical rods 13 are connected with soft pads 17. When the cylinder 30 rises, it moves along the top of the vertical rods 13, and the position of the soft pads 17 remains unchanged. The soft pads 17 cooperate with the retracted steel bars 32 to meet the needs of wearers with different head shapes.

[0044] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A head-mounted detection device that is easy to adjust, comprising a cap body (1), characterized in that: A flexible inner cap (4) is sleeved inside the cap body (1); a screw assembly (2) is arranged in the middle of the top of the cap body (1); the screw assembly (2) comprises a screw (23); the screw (23) passes through the cap body (1) and is threadedly connected to the cap body (1); a fixing assembly (3) is rotatably connected to the lower part of the screw assembly (2); the inner cap (4) is fixed to the fixing assembly (3); a plurality of arc-shaped steel bars (32) are evenly arranged on the outer side of the inner cap (4); the plurality of steel bars (32) are distributed in an annular manner with the top of the inner cap (4) as the center; one end of each of the plurality of steel bars (32) is fixed to the fixing assembly (3); An annular plate (50) is fixed to the middle and lower part of the inner wall of the cap body (1), the plurality of steel bars (32) are located in the inner ring of the annular plate (50) and the outer sides of the steel bars (32) are in close contact with the inner ring wall of the annular plate (50); The inner side wall of the inner cap (4) is provided with a plurality of electrode sheets.

2. The easily adjustable head-mounted detection device according to claim 1, characterized in that: The screw assembly (2) further comprises a handle (21) and a first circular plate (24); the handle (21) is fixed to the top of the screw (23); the first circular plate (24) is fixed to the bottom of the screw (23); an annular groove is provided on the upper surface of the first circular plate (24); a plurality of balls (25) are arranged in the annular groove; the balls (25) roll along the annular groove; and the first circular plate (24) is embedded in the fixing assembly (3) and is rotatably connected.

3. The easily adjustable head-mounted detection device according to claim 2, characterized in that: The fixing assembly (3) comprises a second circular plate (34), a cover plate (36) and a cylinder (30) with a T-shaped vertical cross section, the top of the cylinder (30) being provided with a groove, the first circular plate (24) being placed in the groove, the top of the cylinder (30) being provided with a cover plate (36), the middle of the cover plate (36) being provided with a through hole for the screw rod (23) to pass through, the second circular plate (34) being fixedly arranged at the bottom of the cylinder (30), and one end of each of the plurality of steel bars (32) being fixed to the side wall of the cylinder (30).

4. The easily adjustable head-mounted detection device according to claim 3, characterized in that: The fixing assembly (3) further comprises at least two elastic buckles (38), a connecting block (37) is fixed on the cover plate (36), the buckle (38) is C-shaped and the top is hinged to the connecting block (37), and the buckle (38) is buckled to the top of the cylinder (30).

5. The easily adjustable head-mounted detection device according to claim 3, characterized in that: A through hole is provided on the top of the inner cap (4), and the inner cap (4) is sleeved on the outside of the cylinder (30) through the through hole.

6. The easily adjustable head-mounted detection device according to claim 1, characterized in that: The head-mounted detection device further comprises a limit assembly (5), the limit assembly (5) comprising a circular ring (12), a plurality of vertical rods (13) and a soft cushion (17), the top of the circular ring (12) being fixed to the top inner wall of the cap body (1), and a through hole for inserting a screw rod (23) is provided in the middle of the circular ring (12); The plurality of vertical rods (13) are evenly arranged in a ring shape at the bottom of the circular ring (12), and the lower parts of the plurality of vertical rods (13) are fixedly connected to the soft pad (17).

7. The easily adjustable head-mounted detection device according to claim 6, characterized in that: A spring (15) is fixedly arranged at the bottom of each vertical rod (13), a fixing plate (16) is fixedly connected to the bottom of the spring (15), and the fixing plate (16) is fixedly connected to the cushion (17).

8. The easily adjustable head-mounted detection device according to claim 1, characterized in that: A fixing belt (44) is provided between each of the steel bars (32) and the inner cap (4), with both ends of the fixing belt (44) fixed to the surface of the inner cap (4), and the steel bar (32) passes through the gap between the fixing belt (44) and the inner cap (4); A plurality of steel balls (33) are arranged on each of the steel bars (32), and the outer side of each electrode sheet corresponds to a steel ball (33).

9. The easily adjustable head-mounted detection device according to claim 1, characterized in that: A plurality of brackets (51) are arranged on the top of the annular plate (50), the plurality of brackets (51) are arranged in an annular shape and correspond to the positions of the plurality of steel bars (32), a roller (52) is rotatably arranged on each of the plurality of brackets (51), the side wall of the roller (52) is concave in an arc shape, and the steel bar (32) is located at the arc of the roller (52) and is closely attached to the side wall of the roller (52).

10. The easily adjustable head-mounted detection device according to claim 1, characterized in that: The rear wall of the cap body (1) is provided with a through slot for the electrode sheet circuit to pass through.

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