Helmet

Abstract

The embodiment of the utility model provides a helmet. The helmet comprises a helmet body and a function extension device. A wearing space is defined by the helmet body. The function extension device comprises a shell and a function module fixed to the shell. At least part of the shell extends to the left side and the right side from the front of the wearing space. The functional module comprises at least one of a microphone, a loudspeaker, a wearing detection module, a control key, a battery, a tail lamp, a charging interface, a main control module and a front illuminating lamp. And through the arrangement of the function extension device, the helmet is more intelligent, and the experience feeling is improved. The function extension device is detachably fixed with the helmet main body, so that the function extension device is convenient to maintain; the function extension device can be replaced after being detached, so that the use cost is reduced; after the function expansion device is detached, the basic wearing function of the helmet is not affected, and the helmet can be used as a common helmet; the helmet main body can be used as a common helmet, and a consumer can purchase the function extension device for assembly, so that the helmet is more humanized.

Description

Technical Field

[0001] This application relates to the field of helmets, and more particularly to a helmet. Background Technology

[0002] A helmet is a head protection device for riders of electric vehicles or motorcycles. The primary purpose of a helmet is to protect the rider's head in the event of an impact, preventing or mitigating injury. Existing helmets only offer a single protective function, resulting in a less than ideal user experience. Utility Model Content

[0003] This application provides a smart helmet.

[0004] This application provides a helmet, including a helmet body and a functional extension device. The helmet body forms a wearing space, and the functional extension device is detachably fixed to the helmet body. The functional extension device includes a shell and a functional module fixed to the shell. At least a portion of the shell extends from the front of the wearing space to its left and right sides. The functional module includes at least one of a microphone, a speaker, a wearing detection module, control buttons, a battery, a taillight, a charging port, a main control module, and a front beam light.

[0005] Furthermore, the function expansion device includes a first function expansion device and a second function expansion device, with some of the function modules disposed in the first function expansion device and the remaining function modules disposed in the second function expansion device.

[0006] Furthermore, the first functional expansion device and the second functional expansion device are electrically connected via a first connecting line, which is positioned above the wearing space along the front-rear direction of the helmet.

[0007] Furthermore, the helmet body includes an inner liner and a fastener fixed to the inner liner, and the first functional expansion device and / or the second functional expansion device are detachably fixed to the fastener.

[0008] Furthermore, the fastener is integrally formed with the inner liner.

[0009] Furthermore, the fasteners are provided in multiple forms, and the multiple fasteners are arranged along the circumferential direction of the lining.

[0010] Furthermore, the helmet body includes a pair of fasteners located on the left and right sides of the wearing space, and the functional expansion device is fixed to the pair of fasteners by screws and / or buckles.

[0011] Furthermore, the first functional extension device is assembled to the helmet body along a first direction, and the second functional extension device is assembled to the helmet body along a second direction, wherein the first direction is perpendicular to the second direction.

[0012] Furthermore, the first functional extension device includes a first housing that extends from the front of the wearing space to its left and right sides, and some of the functional modules are disposed on the first housing.

[0013] Furthermore, the first functional extension device includes the microphone, the speaker, and / or the front illumination light fixed to the first housing, the microphone being located in front of the wearing space, and the speaker being located on the left or right side of the wearing space.

[0014] Furthermore, the first housing is provided with a sound outlet to allow sound emitted by the speaker to pass through, and the sound outlet is positioned downwards when the helmet is worn.

[0015] Furthermore, the first functional extension device includes the wear detection module fixed to the first housing.

[0016] Furthermore, the wear detection module is located in front of the wear space.

[0017] Furthermore, once the helmet is worn, the wearing detection module is positioned above the microphone.

[0018] Furthermore, the first functional expansion device includes the control keys fixed to the first housing, and the control keys are exposed outside the helmet body.

[0019] Furthermore, the control buttons are located on the left or right side of the helmet body.

[0020] Furthermore, the helmet body includes an inner liner that forms the wearing space, and the inner liner includes a receiving groove in which at least a portion of the first shell is received.

[0021] Furthermore, the liner includes a first bottom surface extending along its thickness direction, and the second bottom surface of the first housing is flush with the first bottom surface of the liner.

[0022] Furthermore, the liner includes a first sidewall surrounding the outside of the receiving groove, a first bottom surface disposed on the first sidewall, the first housing includes a bottom wall and a second sidewall extending from the bottom wall, the second bottom surface disposed on the bottom wall, and a receiving space is provided between the second sidewall, the first sidewall and the bottom wall for receiving a second connecting cable connected to the speaker.

[0023] Furthermore, the first housing includes a third sidewall extending from the bottom wall, the third sidewall being located inside the first sidewall and abutting against the first sidewall, and a second connecting line connected to the speaker being located between the second sidewall and the third sidewall.

[0024] Furthermore, the second functional expansion device is located at the rear of the wearing space, and the second functional expansion device includes a second housing and a battery, charging interface and / or main control module fixed to the second housing.

[0025] Furthermore, the second functional extension device is located behind the wearing space, and the second functional extension device includes a second housing and a taillight fixed to the second housing.

[0026] The helmet according to this application includes a functional expansion device, which includes a functional module. The functional module includes at least one of the following: a microphone, a speaker, a wear detection module, control buttons, a battery, a taillight, a charging port, and a main control module. This makes the helmet more intelligent and improves the user experience. The functional expansion device is detachably fixed to the helmet body, facilitating maintenance. The functional expansion device can also be disassembled and replaced to reduce usage costs. Disassembling the functional expansion device does not affect the helmet's basic wearing function, allowing it to be used as a regular helmet. The helmet body can be used as a regular helmet, and consumers can purchase and assemble the functional expansion device themselves according to their personal preferences, making it more user-friendly. Attached Figure Description

[0027] Figure 1 A schematic diagram of a helmet according to an exemplary embodiment of this application is shown;

[0028] Figure 2 It shows Figure 1 An exploded view of the helmet shown;

[0029] Figure 3 It shows Figure 2 An exploded view of the first functional expansion device shown;

[0030] Figure 4 It shows Figure 1 A schematic diagram of the inner lining of the helmet body shown;

[0031] Figure 5 It shows Figure 2 A schematic diagram of the first functional expansion device is shown;

[0032] Figure 6 It shows Figure 5 A schematic diagram of the first functional expansion device from another perspective;

[0033] Figure 7 It shows Figure 2A schematic diagram of the helmet body shown;

[0034] Figure 8 It shows Figure 7 An exploded view of the helmet body shown;

[0035] Figure 9 It shows Figure 2 A schematic diagram showing the connection between the first and second functional expansion devices of the helmet;

[0036] Figure 10 It shows Figure 7 An exploded view of the second functional expansion device shown;

[0037] Figure 11 It shows Figure 7 The diagram shows the second functional expansion device after it is fixed to the first fixing member;

[0038] Figure 12 It shows Figure 7 An enlarged view of the circled area at point A in the schematic diagram shown;

[0039] Figure 13 It shows Figure 11 A schematic diagram from another perspective. Detailed Implementation

[0040] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0041] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0042] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Moreover, the collection, use, and processing of relevant data need to comply with the relevant laws, regulations, and standards of relevant countries and regions, and corresponding operation entrances are provided for users to choose to authorize or refuse.

[0043] Referring Figures 1 to 3 , an embodiment of this application provides a helmet 100, which includes a helmet main body 1 and a function expansion device 200. The function expansion device 200 includes a housing 201 and a function module (not labeled) fixed to the housing 201. The function module includes at least one of a microphone 22, a speaker 23, a wearing detection module 24, a control button 218, a battery 42, a taillight 43, a charging interface (not shown), and a main control module (not shown), so as to realize the intelligence of the helmet 100 and improve the experience.

[0044] The function expansion device 200 is detachably fixed to the helmet main body 1, which is convenient for maintaining the function expansion device 200; the function expansion device 200 can also be replaced after being detached to reduce the use cost; after the function expansion device 200 is detached, it does not affect the basic wearing function of the helmet 100 and can be used as an ordinary helmet; the helmet main body 1 can be used as an ordinary helmet, and consumers can purchase the function expansion device 200 by themselves according to their personal preferences for assembly, which is more user-friendly.

[0045] The helmet main body 1 encloses a wearing space 110. At least part of the housing 201 extends from the front of the wearing space 110 to its left and right sides along the circumference of the wearing space 110, so as to facilitate the setting of the function module.

[0046] In some embodiments, the function expansion device 200 includes a first function expansion device 2 and a second function expansion device 4. Part of the function module is arranged in the first function expansion device 2, and the rest of the function module is arranged in the second function expansion device 4. The function expansion device 200 is convenient for processing and molding, and is also convenient for assembling the function expansion device 200 with the helmet main body 1.

[0047] In some embodiments, the first function expansion device 2 and the second function expansion device 4 are electrically connected by a first connection line 32, and the first connection line 32 is arranged above the wearing space 110 along the front-back direction of the helmet 100

[0048] The first function expansion device 2 is fixed to the helmet main body 1.

[0049] The first functional expansion device 2 includes a first housing 21 extending along the circumferential direction of the wearing space 110 to its left and right sides, and some of the functional modules are disposed on the first housing 21.

[0050] In some embodiments, the first functional extension device 2 includes a microphone 22 and a speaker 23 fixed to the first housing 21. The microphone 22 is located in front of the wearing space 110, and the speaker 23 is located on the left or right side of the wearing space 110.

[0051] The first functional extension device 2 includes a microphone 22 and a speaker 23, which can answer phone calls and increase cycling safety. At the same time, the first housing 21 extends to the left and right sides of the wearing space 110 in the circumferential direction. The microphone 22 and the speaker 23 are fixed to the first housing 21. The first housing 21 can be fixed to the helmet body 1, which increases the convenience of assembly and, correspondingly, the convenience of disassembly.

[0052] In some embodiments, the first functional expansion device 2 includes the wearing detection module 24 fixed to the first housing 21 to detect whether the driver or passenger is wearing a helmet, and can also expand the data recording function to realize more intelligent functions.

[0053] In some embodiments, the wear detection module 24 is located in front of the wearing space 110. The wear detection module 24 may also be located behind, above, or on the left or right sides of the wearing space 110.

[0054] In some embodiments, the wear detection module 24 includes an infrared sensor and a capacitive sensor to increase the accuracy of detection.

[0055] In some embodiments, the wear detection module 24 may include only an infrared sensor or a capacitive sensor. This application does not limit the type of the wear detection module 24, as long as it can detect whether the helmet 100 is being worn.

[0056] The infrared sensor uses infrared light as its medium and can detect whether an object is approaching. When a driver or passenger is wearing a helmet, the infrared sensor is placed close to the driver's or passenger's head to determine if the driver or passenger is wearing a helmet.

[0057] The capacitive sensor uses various types of capacitors as sensing elements to convert the measured physical or mechanical quantity into a change in capacitance. It is widely used in measuring displacement, angle, vibration, velocity, pressure, etc. In this embodiment, because the helmet is worn correctly, the capacitive sensor is close to the rider's head, exerting a certain amount of pressure. Optionally, the capacitance value of the capacitive sensor can increase with increasing pressure or decrease with decreasing pressure. Taking the example of the capacitance value increasing with increasing pressure, in this embodiment, when the capacitance value collected by the capacitive sensor is greater than a threshold, or remains greater than that threshold for a predetermined time, it indicates that the capacitive sensor is close to the rider's head, and it can be determined that the rider is wearing a helmet.

[0058] In some embodiments, after the helmet 100 is worn, the wearing detection module 24 is positioned above the microphone 22, and the microphone 22 is close to the wearer's mouth to ensure sound pickup effect.

[0059] In some embodiments, after the helmet 100 is worn, the microphone 22 is positioned downwards, and the wearing detection module 24 is positioned towards the wearing space 110.

[0060] In some embodiments, the first housing 21 is provided with a sound outlet 210 to allow the sound emitted by the speaker 23 to pass through. When the helmet 100 is worn, the sound outlet 210 is positioned downwards and close to the wearer's ear to ensure sound quality.

[0061] In some embodiments, the first functional extension device 2 includes a front illumination light (not shown) located in front of the helmet body 1 to provide illumination in low light conditions, providing convenience and preventing injuries caused by falls or bumps due to insufficient light; it can also provide nighttime illumination to facilitate viewing the receipt information on takeout orders at night and to find the corresponding house number of the takeout address more quickly at night, thus speeding up the delivery process.

[0062] In some embodiments, the helmet body 1 includes a liner 11 that surrounds the wearing space 110. The liner 11 includes a receiving groove 111 in which at least a portion of the first shell 21 is received. The first shell 21 can act as a protective shell to protect the liner 11.

[0063] The inner liner 11 refers to the internal cushioning layer, whose main function is to absorb the impact force of external impacts to protect the head. The inner liner 11 can be made of foam-type materials or fibrous materials, etc.

[0064] In some embodiments, the helmet 100 includes an outer shell 10, which can be made of a relatively hard material such as plastic or carbon fiber. In case of an accidental collision, the outer shell 10 is the first line of defense to protect the head and is used to disperse the impact force.

[0065] In some embodiments, the inner lining 11 includes a first bottom surface 1121 extending along its thickness direction. The second bottom surface 2111 of the first housing 21 is flush with the first bottom surface 1121 of the inner lining 11. The second bottom surface 2111 can also be indented relative to the first bottom surface 1121, and the first housing 21 does not protrude so as not to affect the wearing comfort.

[0066] See Figures 3 to 9 , in some embodiments, the inner lining 11 includes a first side wall 112 surrounding the outside of the receiving groove 111, and the first bottom surface 1121 is disposed on the first side wall 112. The first housing 21 includes a bottom wall 211 and a second side wall 212 extending from the bottom wall 211, and the second bottom surface 2111 is disposed on the bottom wall 211. A receiving space 2110 is provided between the second side wall 212, the first side wall 112 and the bottom wall 211 for receiving the second connecting wire 31 connected to the speaker 23.

[0067] In some embodiments, the receiving space 2110 is in a U shape with one side open. Removing the first function expansion device 2 can expose the second connecting wire 31, which is convenient for maintenance and saves the assembly and disassembly processes.

[0068] In some embodiments, the receiving space 2110 can also be enclosed on all sides. Even if the first function expansion device 2 is removed, the second connecting wire 31 is in a hidden state to protect the second connecting wire 31.

[0069] In some embodiments, the first housing 21 includes a baffle 231 that is separately provided from and fixed to the bottom wall 211, and the sound outlet hole 210 is provided on the baffle 231.

[0070] In some embodiments, the sound outlet hole 210 can also be directly provided on the bottom wall 211.

[0071] In some embodiments, the first housing 21 includes a third side wall 213 extending from the bottom wall 211. The third side wall 213 is located inside the first side wall 112 and abuts against the first side wall 112. The second connecting wire 31 connected to the speaker 23 is located between the second side wall 212 and the third side wall 213. The setting of the third side wall 213 increases the strength of the first function expansion device 2.

[0072] In some embodiments, the first housing 21 includes a column 214 extending from the bottom wall 211, and the microphone 22 is housed within the space enclosed by the column 214.

[0073] In some embodiments, the first housing 21 includes a protrusion 215 extending from the bottom wall 211, and the wear detection module 24 is fixed to the protrusion 215.

[0074] In some embodiments, the inner surface of the protrusion 215 smoothly transitions to the inner surface of the liner 11 to increase wearing comfort.

[0075] In some embodiments, the two opposite free ends of the first housing 21 are respectively provided with a first extension 216 and a second extension 217, and a pair of speakers 23 are located in the space enclosed by the first extension 216 and the second extension 217.

[0076] In some embodiments, the first extension 216 is located inside the liner 11.

[0077] In some embodiments, the first function extension device 2 includes the control key 218 fixed to the first housing 21, whose functions include, but are not limited to, answering calls, hanging up calls, and adjusting volume. The control key 218 is exposed on the helmet body 1 for easy operation.

[0078] In some embodiments, the control key 218 is disposed on the second extension 217. The liner 11 is provided with a storage groove 113, and a portion of the second extension 217 is located inside the liner 11, while a portion is received within the storage groove 113, so that the control key 218 is exposed.

[0079] In some embodiments, the control key 218 is located on the left or right side of the helmet body 1.

[0080] In some embodiments, the first housing 21 includes a cover plate 219 that can be opened or removed to facilitate maintenance of the speaker 23.

[0081] In some embodiments, the helmet body 1 includes a fastener 12 fixed to the inner liner 11, and the first functional expansion device 2 and / or the second functional expansion device 4 are detachably fixed to the fastener 12 to increase the stability of the first functional expansion device 2 and / or the second functional expansion device 4 and to protect the inner liner 11.

[0082] In some embodiments, the fixing member 12 and the inner lining 11 are integrally formed, which has a simple structure, low cost and saves the assembly process.

[0083] In some embodiments, the fixing members 12 are provided in plurality, and the plurality of fixing members 12 are arranged along the circumferential direction of the inner lining 11 to increase the stability of the first functional expansion device 2.

[0084] In some embodiments, the helmet body 1 includes a pair of fixing members 12 located on the left and right sides of the wearing space 110, and the functional expansion device 200 and the pair of fixing members 12 are fixed by screws and / or buckles to facilitate the assembly and disassembly of the functional expansion device 200.

[0085] See Figures 9 to 10 , in some embodiments, the second functional expansion device 4 is located behind the wearing space 110.

[0086] In some embodiments, the first functional expansion device 2 is assembled to the helmet body 1 along a first direction, the second functional expansion device 4 is assembled to the helmet body 1 along a second direction, and the first direction is perpendicular to the second direction.

[0087] In some embodiments, the first direction is the vertical direction and the second direction is the horizontal direction.

[0088] In some embodiments, the second functional expansion device 4 is located inside the inner lining 11.

[0089] In some embodiments, the second direction is the direction from the front to the back of the helmet 100.

[0090] In some embodiments, the second functional expansion device 4 includes a second housing 41 and the battery 42 and / or the tail light 43 and / or the charging interface and / or the main control module fixed to the second housing 41.

[0091] In some embodiments, the second functional expansion device 4 includes a main board 44, and the main control module is disposed on the main board 44. The main control module can also be electrically connected to the main board 44 through a connecting wire.

[0092] The battery 42 supplies power to the helmet 100, and the tail light 43 is located behind the helmet body 1 and can be used for warning, improving the safety of night riding.

[0093] In some embodiments, the second functional expansion device 4 includes a lamp cover 45 fixed to the second housing 41, and the lamp cover 45 allows the light emitted by the tail light 43 to pass through.

[0094] Reference Figure 2 and Figure 4 In some embodiments, the inner lining 11 is provided with a hole 114 through which the lamp cover 45 passes, and the outer surface of the lamp cover 45 protrudes from the helmet body 1 or is flush with the outer surface of the helmet body 1.

[0095] In some embodiments, the charging interface is used to charge the battery 42, and the charging interface includes, but is not limited to, a TYPE-C interface.

[0096] In some embodiments, the battery 42 is also replaceable.

[0097] In some embodiments, the second function expansion device 4 includes a first connector (not shown), and the first connector is electrically connected to the circuit board 44. One end of the first connecting wire 32 is connected to a second connector (not shown), and the first connector and the second connector are pluggable, facilitating the maintenance of the first function expansion device 2 and the second function expansion device 4.

[0098] In some embodiments, the other end of the first connecting wire 32 is electrically connected to a third connector (not shown), one end of the second connecting wire 31 is electrically connected to a fourth connector (not shown), and the third connector and the fourth connector are pluggable, facilitating the maintenance of the speaker 23.

[0099] In some embodiments, the microphone 22 is electrically connected to the fourth connector through a second connecting wire (not shown), facilitating the maintenance of the microphone 22.

[0100] In some embodiments, the wearing detection module 24 is electrically connected to the fourth connector through a fourth connecting wire (not shown), facilitating the maintenance of the wearing detection module 24.

[0101] In some embodiments, the microphone 22, the speaker 23, and the wearing detection module 24 can be directly connected to the circuit board 44 through connecting wires.

[0102] Reference Figures 11 to 13 , the fixing member 12 includes a first fixing member 121, and the second function expansion device 4 is fixed to the first fixing member 121.

[0103] The first fixing member 121 includes a back plate portion 1211 and a pair of side plate portions 1212 extending from opposite sides of the back plate portion 1211. The second function expansion device 4 is located in the space surrounded by the back plate portion 1211 and the pair of side plate portions 1212 to increase the stability of the second function expansion device 4. [[ID=​An ear part 1213 is provided on the side plate part 1212 and is located above the second function expansion device 4. The ear part 1213 and the second housing 41 are fixed by screws 40. A latching part 1215 for latching and fixing with the second housing 41 is provided on the side plate part 1212.

[0105] In some embodiments, one or more ear parts 1213 may be provided, and the present application does not limit the number of the ear parts 1213.

[0106] When assembling the second function expansion device 4, first place the second function expansion device 4 into the space surrounded by the back plate part 1211 and the pair of side plate parts 1212, and the latching part 1215 is latched and fixed with the second housing 41, and then the second function expansion device 4 is fixed by screws 40 to increase the stability of the second function expansion device 4; moreover, first fixing the second function expansion device 4 by the latching part 1215 also facilitates the assembly of the screws 40 to improve the assembly efficiency.

[0107] In some embodiments, the latching part 1215 and the screws 40 may be provided alternatively.

[0108] See Figure 1 , in some embodiments, the helmet 100 includes a head circumference adjuster 5 for adjusting according to the size of the head circumference to suit people with different head circumferences. The head circumference adjuster 5 is fixed to the inner liner 11, and the head circumference adjuster 5 is located inside the second function expansion device 4.

[0109] It should be noted that the technical solutions or technical features described in the above embodiments may be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A helmet, characterized in that, include: The helmet body forms the wearing space; A functional extension device is detachably fixed to the helmet body. The functional extension device includes a shell and a functional module fixed to the shell. At least a portion of the shell extends from the front of the wearing space to its left and right sides. The functional module includes at least one of a microphone, a speaker, a wear detection module, control buttons, a battery, a taillight, a charging port, a main control module, and a front illumination light.

2. The helmet according to claim 1, characterized in that, The functional expansion device includes a first functional expansion device and a second functional expansion device, with some of the functional modules disposed in the first functional expansion device and the remaining functional modules disposed in the second functional expansion device.

3. The helmet according to claim 2, characterized in that, The first functional expansion device and the second functional expansion device are electrically connected via a first connecting line, which is positioned above the wearing space along the front-back direction of the helmet.

4. The helmet according to claim 2, characterized in that, The helmet body includes an inner liner and a fastener fixed to the inner liner, and the first functional expansion device and / or the second functional expansion device are detachably fixed to the fastener.

5. The helmet according to claim 4, characterized in that, The fastener is integrally formed with the inner lining.

6. The helmet according to claim 4, characterized in that, The fasteners are provided in multiple ways, and the multiple fasteners are arranged along the circumferential direction of the lining.

7. The helmet according to claim 4, characterized in that, The helmet body includes a pair of fasteners located on the left and right sides of the wearing space, and the functional expansion device is fixed to the pair of fasteners by screws and / or buckles.

8. The helmet according to claim 2, characterized in that, The first functional expansion device is assembled to the helmet body along a first direction, and the second functional expansion device is assembled to the helmet body along a second direction, wherein the first direction is perpendicular to the second direction.

9. The helmet according to claim 2, characterized in that, The first functional extension device includes a first housing that extends from the front of the wearing space to its left and right sides, and some of the functional modules are disposed on the first housing.

10. The helmet according to claim 9, characterized in that, The first functional extension device includes the microphone, the speaker, and / or the front illumination light fixed to the first housing, wherein the microphone is located in front of the wearing space, and the speaker is located on the left or right side of the wearing space.

11. The helmet according to claim 10, characterized in that, The first housing is provided with a sound outlet to allow the sound emitted by the speaker to pass through, and the sound outlet is positioned downwards when the helmet is worn.

12. The helmet according to claim 9, characterized in that, The first functional extension device includes the wear detection module fixed to the first housing.

13. The helmet according to claim 12, characterized in that, The wear detection module is located in front of the wear space.

14. The helmet according to claim 13, characterized in that, Once the helmet is worn, the wear detection module is positioned above the microphone.

15. The helmet according to claim 9, characterized in that, The first functional expansion device includes the control keys fixed to the first housing, and the control keys are exposed on the helmet body.

16. The helmet according to claim 15, characterized in that, The control buttons are located on the left or right side of the helmet body.

17. The helmet according to claim 9, characterized in that, The helmet body includes an inner liner that forms the wearing space, and the inner liner includes a receiving groove in which at least a portion of the first shell is received.

18. The helmet according to claim 17, characterized in that, The liner includes a first bottom surface extending along its thickness direction, and a second bottom surface of the first housing is flush with the first bottom surface of the liner.

19. The helmet according to claim 18, characterized in that, The liner includes a first sidewall surrounding the outside of the receiving groove, a first bottom surface disposed on the first sidewall, the first housing includes a bottom wall and a second sidewall extending from the bottom wall, the second bottom surface disposed on the bottom wall, and a receiving space is provided between the second sidewall, the first sidewall and the bottom wall for receiving a second connecting cable connected to the speaker.

20. The helmet according to claim 19, characterized in that, The first housing includes a third sidewall extending from the bottom wall, the third sidewall being located inside the first sidewall and abutting against the first sidewall, and a second connecting line connected to the speaker being located between the second sidewall and the third sidewall.

21. The helmet according to any one of claims 2 to 20, characterized in that, The second functional expansion device is located at the rear of the wearing space. The second functional expansion device includes a second housing and a battery, charging interface and / or main control module fixed to the second housing.

22. The helmet according to claim 21, characterized in that, The second functional extension device includes a taillight fixed to the second housing.

23. A functional extension device, detachably fixed to a helmet, characterized in that, The functional expansion device includes: The shell, after the functional extension device is assembled with the helmet, at least a portion of the shell extends from the front of the wearing space of the helmet to its left and right sides; The functional module is fixed to the housing and includes at least one of the following: microphone, speaker, wear detection module, control keys, battery, taillight, charging interface, main control module, and headlight.

24. The functional expansion device according to claim 23, characterized in that, The functional expansion device includes a first functional expansion device and a second functional expansion device, with some of the functional modules disposed in the first functional expansion device and the remaining functional modules disposed in the second functional expansion device.

25. The functional expansion device according to claim 24, characterized in that, The first functional expansion device and the second functional expansion device are electrically connected via a first connecting line. After the functional expansion device is assembled with the helmet, the first connecting line is positioned above the wearing space along the front-back direction of the helmet.

26. The functional expansion device according to claim 24, characterized in that, When the functional expansion device is assembled with the helmet, the first functional expansion device is assembled to the helmet along a first direction, and the second functional expansion device is assembled to the helmet along a second direction, wherein the first direction is perpendicular to the second direction.

27. The functional expansion device according to claim 24, characterized in that, The first functional expansion device includes a first housing. After the functional expansion device is assembled with the helmet, the first housing extends from the front of the wearing space to its left and right sides, and some of the functional modules are disposed on the first housing.

28. The functional expansion device according to claim 27, characterized in that, The first functional expansion device includes the microphone, the speaker, and / or the front illumination light fixed to the first housing. After the functional expansion device is assembled with the helmet, the microphone is located in front of the wearing space, and the speaker is located on the left and / or right side of the wearing space.

29. The functional expansion device according to claim 28, characterized in that, The first housing is provided with a sound outlet to allow the sound emitted by the speaker to pass through. After the functional expansion device is assembled with the helmet, the sound outlet is positioned downwards when the helmet is worn.

30. The functional expansion device according to claim 28, characterized in that, The first housing has a first extension and a second extension at its two opposite free ends. The first functional expansion device includes a pair of speakers, which are located in the space enclosed by the first extension and the second extension. The first housing includes a bottom wall and a second side wall and a third side wall extending from the bottom wall. A second connecting line connected to the speakers is located between the second side wall and the third side wall.

31. The functional expansion device according to claim 27, characterized in that, The first functional extension device includes the wear detection module fixed to the first housing.

32. The functional expansion device according to claim 31, characterized in that, After the functional expansion device is assembled with the helmet, the wearing detection module is located in front of the wearing space.

33. The functional expansion device according to claim 32, characterized in that, After the functional extension device is assembled with the helmet, the wearing detection module is located above the microphone when the helmet is worn.

34. The functional expansion device according to claim 27, characterized in that, The first function expansion device includes the control key fixed to the first housing. After the function expansion device is assembled with the helmet, the control key is exposed on the helmet.

35. The functional expansion device according to claim 34, characterized in that, After the functional expansion device is assembled with the helmet, the control buttons are located on the left or right side of the helmet.

36. The functional expansion device according to any one of claims 24 to 35, characterized in that, After the functional expansion device is assembled with the helmet, the second functional expansion device is located behind the wearing space. The second functional expansion device includes a second housing and a battery, charging interface and / or main control module fixed to the second housing.

37. The functional expansion device according to claim 36, characterized in that, The second functional extension device includes a taillight fixed to the second housing.

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