Motorcycle helmet with convenient jaw uncovering structure

Abstract

The utility model discloses a motorcycle helmet with a convenient jaw uncovering structure, which relates to the field of helmets and has the technical key points that the motorcycle helmet comprises a helmet body, a protective plate is hinged to one side of the helmet body, mounting seats are arranged on two sides of the helmet body, a clamping column is arranged on one side of each mounting seat, a connecting seat is arranged on one side of the protective plate, and the clamping column is arranged on the other side of the connecting seat. A connecting base is arranged on one side of the protective plate, a movable shifting piece is hinged to one side of the connecting base, a connecting rope is arranged on one side of the movable shifting piece, two fixing frames are arranged on one side of the protective plate and located on the two sides of the connecting base, and a limiting notch is formed in one end of each fixing frame; limiting notches are formed in the two fixing frames, the limiting notches of the two fixing frames are connected with the clamping columns on the two sides of the helmet body in an inserted mode respectively, one side of each fixing frame is rotationally connected with a clamping plate, and the technical problem that in the driving process, due to road vibration and other reasons, a jaw protection plate can be accidentally opened, and normal driving of a driver is affected is solved.

Description

Technical Field

[0001] The utility model relates to the field of helmets, in particular to a motorcycle helmet with a chin conveniently uncovered structure. Background Art

[0002] Motorcyclists face significantly lower road safety than car drivers. This is because motorcycles lack the enclosed body protection of cars. In the event of a traffic accident, motorcyclists can be easily thrown from their vehicles, resulting in serious injuries. Statistics show that fatal injuries in motorcycle accidents often occur to the driver's head, making head protection a top priority in motorcycle safety equipment. To ensure the safety of motorcycle drivers, relevant Chinese regulations have clearly stipulated that helmets must be worn while riding motorcycles. As a crucial protective tool, helmets can significantly reduce head injuries in accidents.

[0003] In the design of conventional motorcycle helmets, the chin guard is an indispensable component. It is located at the front and lower part of the helmet. Its main function is to protect the driver's chin from impact. The chin guard is connected to both sides of the helmet body by fixing devices to ensure its stability in normal use. However, in order to improve the comfort and convenience of the wearer, the chin guard is usually designed to be openable. In this way, when the driver needs to talk, drink or smoke, there is no need to take off the entire helmet, just gently open the chin guard. However, existing helmets are not provided with a structure for locking the chin guard, resulting in the chin guard being accidentally opened due to road vibration and other reasons during driving, affecting the driver's normal driving. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a motorcycle helmet with a chin-opening structure, the purpose of which is to solve the technical problem that the chin protection plate may accidentally open due to road vibrations and other reasons during driving, affecting the driver's normal driving.

[0005] The technical solution of the utility model to solve the above technical problems is:

[0006] The motorcycle helmet with a chin-opening structure includes a helmet body, wherein one side of the helmet body is hinged with a protective plate, two sides of the helmet body are provided with mounting seats, one side of the mounting seat is provided with a positioning column, one side of the protective plate is provided with a connecting seat, one side of the connecting seat is hinged with a movable paddle, one side of the movable paddle is provided with a connecting rope, one side of the protective plate is provided with two fixing brackets, the two fixing brackets are located at both sides of the connecting seat, one end of the fixing bracket is provided with a limited notch, the limiting notches of the two fixing brackets are respectively plugged into the positioning columns on both sides of the helmet body, one side of the fixing bracket is rotatably connected to a positioning plate, one end of the positioning plate is provided with a limiting convex plate, the limiting convex plate is located in the limiting notch, so that the limiting convex plate can close the limiting notch, and one side of the fixing bracket is provided with a reset torsion spring, one end of the reset torsion spring is connected to the positioning plate.

[0007] Before the driver needs to drive, the protective plate is rotated downward to the chin position of the helmet body, and the movable paddle is pressed. The movable paddle will rotate along the connecting seat. The movable paddle will drive the connecting rope to pull during the rotation, and the connecting rope will drive the positioning plate to rotate, so that the positioning plate drives the limiting protrusion to disengage from the limiting notch, allowing the positioning column to be plugged into the limiting notch, and then the movable paddle is moved. The positioning plate is reset under the action of the elasticity of the reset torsion spring, so that the limiting protrusion of the positioning plate closes the limiting notch, thereby locking the position of the positioning column, thereby preventing the protective plate from separating from the helmet body during driving.

[0008] Furthermore, in the present application, a return spring is provided on one side of the connecting seat, and one end of the return spring is connected to the movable paddle.

[0009] When the driver operates the movable paddle, the return spring is stretched or compressed, storing elastic potential energy. When the driver releases the movable paddle, the return spring releases the elastic potential energy and pushes the movable paddle back to its original position. This design realizes the automatic reset function of the movable paddle through the elastic characteristics of the spring. The driver does not need to manually reset the movable paddle, which greatly improves the convenience of using the helmet.

[0010] Furthermore, in the present application, a mounting post is provided on one side of the connecting seat, the other end of the reset spring is clamped with the mounting post, a mounting hole is opened on one side of the movable paddle, and one end of the reset spring is plugged into the mounting hole.

[0011] By arranging a mounting post on the connecting seat and opening a mounting hole on the movable paddle, a stable limit point and fixing point are provided for the reset spring. One end of the reset spring is inserted into the mounting hole of the movable paddle, and the other end is clamped on the mounting post of the connecting seat. This structural design ensures a reliable connection between the reset spring, the connecting seat and the movable paddle. Through this design, the reset spring can produce elastic deformation when the movable paddle is pulled, and restore the movable paddle to its initial position after the external force is released. The setting of the mounting post and the mounting hole not only provides a limit point and fixing point for the reset spring, but also prevents the reset spring from deviating or falling off during use, thereby ensuring the stability of the movable paddle and the reliability of the reset function.

[0012] Furthermore, in the present application, a first slot is provided at the other end of the positioning plate, a first leg is provided at one end of the reset torsion spring, a first protrusion is provided on one side of the first leg, and the first protrusion is engaged with the first slot, a connecting tube is provided on one side of the fixing frame, a second slot is provided on one side of the connecting tube, the reset torsion spring is located inside the connecting tube, a second leg is provided at the other end of the reset torsion spring, a second protrusion is provided on one side of the second leg, and the second protrusion is engaged with the second slot.

[0013] Furthermore, in the present application, a rotating shaft is provided on one side of the positioning plate, one end of the rotating shaft passes through the reset torsion spring, and the inserted end of the rotating shaft is rotatably connected to the inside of the connecting tube.

[0014] Furthermore, in the present application, a setting groove is provided at one end of the positioning plate, and both ends of the connecting rope pass through the setting grooves of the two positioning plates respectively, and first limiting columns are provided at both ends of the connecting rope.

[0015] Furthermore, in the present application, a first connecting channel is provided inside the fixing frame, and a connecting hole is provided on one side of the fixing frame, the connecting hole is connected to the first connecting channel, and the two ends of the connecting rope respectively pass through the connecting holes of the two fixing frames, so that the two ends of the connecting rope slide and fit with the first connecting channel.

[0016] Furthermore, in the present application, two second connecting channels are provided on one side of the connecting seat, and the two ends of the connecting rope respectively pass through the two second connecting channels of the connecting seat, so that the two ends of the connecting rope slide and fit with the second connecting channels.

[0017] Furthermore, in the present application, a second limiting column is provided in the middle of the connecting rope, the second limiting column is elastic, a third slot is provided on one side of the movable paddle, and the second limiting column is engaged with the third slot.

[0018] Furthermore, in the present application, a limiting plate is provided at one end of the positioning post, the diameter of the limiting plate is larger than the diameter of the positioning post, and a ventilation groove is opened on one side of the protective plate, and the ventilation groove is connected to the interior of the helmet body.

[0019] The utility model has the following beneficial effects:

[0020] Before the driver needs to drive, the protective plate is rotated downward to the chin position of the helmet body, and the movable paddle is pressed. The movable paddle will rotate along the connecting seat. The movable paddle will drive the connecting rope to pull during the rotation, and the connecting rope will drive the positioning plate to rotate, so that the positioning plate drives the limiting protrusion to disengage from the limiting notch, allowing the positioning column to be plugged into the limiting notch, and then the movable paddle is moved. The positioning plate is reset under the action of the elasticity of the reset torsion spring, so that the limiting protrusion of the positioning plate closes the limiting notch, thereby locking the position of the positioning column, thereby preventing the protective plate from separating from the helmet body during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 It is a structural schematic diagram of the positioning column of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the limiting notch of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the connecting rope of the utility model.

[0025] Figure 5 It is a structural schematic diagram of the movable paddle of the utility model.

[0026] Figure 6 It is a structural schematic diagram of the second limiting column of the utility model.

[0027] Wherein, the reference numerals:

[0028] 1. Helmet body; 2. Protective plate; 3. Mounting seat; 4. Positioning column; 5. Limiting plate; 6. Ventilation slot; 7. Fixing frame; 8. Limiting notch; 9. Positioning plate; 10. Limiting convex plate; 11. Rotating shaft; 12. Reset torsion spring; 13. First support leg; 14. Second support leg; 15. First slot; 16. Second slot; 17. Second convex; 18. First convex; 19. Connecting tube; 20. Setting slot; 21. Connecting rope; 22. First limiting column; 23. First connecting channel; 24. Connecting hole; 25. Reset spring; 26. Mounting column; 27. Mounting hole; 28. Movable paddle; 29. ​​Third slot; 30. Second limiting column; 31. Connecting seat; 32. Second connecting channel. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0031] In busy urban traffic, motorcyclists face a variety of complex road conditions. To ensure safety, drivers generally wear helmets. However, the chin guard design of traditional motorcycle helmets has problems. Drivers need to remove the entire helmet to communicate or drink water, which is extremely inconvenient. Although some helmets are designed with removable chin guards, they lack a reliable locking mechanism and are easily opened accidentally during road vibrations or emergency braking, posing a potential safety hazard to the driver.

[0032] For example, when a driver was driving on a bumpy country road, the chin guard of his helmet suddenly loosened. In the process of hastily adjusting the helmet, the driver lost control of the vehicle and eventually rolled over. The chin guard failed to provide proper protection during the rollover, resulting in serious abrasions and collisions on the driver's chin. This situation has caused motorcycle enthusiasts to worry about the existing helmet design. They urgently need a chin guard structure that is both stable and easy to open.

[0033] Reference Figure 1-Figure 4In some specific embodiments, a motorcycle helmet with a convenient chin opening structure includes a helmet body 1, a protective plate 2 is hingedly connected to one side of the helmet body 1, mounting seats 3 are provided on both sides of the helmet body 1, a locking column 4 is provided on one side of the mounting seat 3, a connecting seat 31 is provided on one side of the protective plate 2, a movable paddle 28 is hingedly connected to one side of the connecting seat 31, and a connecting rope 21 is provided on one side of the movable paddle 28, and two fixing frames 7 are provided on one side of the protective plate 2. The two fixing frames 7 are located on both sides of the connecting seat 31, and one end of the fixing frame 7 is provided with a limiting notch 8. The limiting notches 8 of the two fixing frames 7 are respectively plugged into the locking columns 4 on both sides of the helmet body 1, and a locking plate 9 is rotatably connected to one side of the fixing frame 7. A limiting convex plate 10 is provided at one end of the locking plate 9. The limiting convex plate 10 is located in the limiting notch 8 so that the limiting convex plate 10 can close the limiting notch 8. A return torsion spring 12 is provided on one side of the fixing frame 7, and one end of the return torsion spring 12 is connected to the locking plate 9.

[0034] Through the above technical solution, when the driver needs to drive, the protective plate 2 is rotated downward to the chin position of the helmet body 1, and the movable paddle 28 is pressed. The movable paddle 28 will rotate along the connecting seat 31. Since one side of the movable paddle 28 is connected to the connecting rope 21, the movable paddle 28 drives the connecting rope 21 to pull during the rotation process, and the connecting rope 21 drives the locking plate 9 to rotate, so that the locking plate 9 drives the limiting protrusion 10 to disengage from the limiting notch 8, allowing the locking column 4 to be plugged into the limiting notch 8, and then move the movable paddle 28. The locking plate 9 is reset under the elastic action of the reset torsion spring 12, so that the limiting protrusion 10 of the locking plate 9 closes the limiting notch 8, thereby locking the position of the locking column 4, thereby preventing the protective plate 2 from separating from the helmet body 1 during driving.

[0035] Reference Figures 1-6 In some specific embodiments, a return spring 25 is provided on one side of the connecting seat 31 , and one end of the return spring 25 is connected to the movable paddle 28 .

[0036] Through the above technical solution, when the driver operates the movable paddle 28, the return spring 25 is stretched or compressed to store elastic potential energy. When the driver releases the movable paddle 28, the return spring 25 releases the elastic potential energy to push the movable paddle 28 back to its initial position. This design realizes the automatic resetting function of the movable paddle 28 through the elastic characteristics of the return spring 25. The driver does not need to manually reset the movable paddle 28, which greatly improves the convenience of using the helmet.

[0037] Furthermore, to accommodate different users' operating habits and strength, the elastic coefficient of the return spring 25 can be adjusted within a certain range. For example, a spring preload adjustment mechanism can be designed to change the initial compression of the spring by rotating the adjustment nut, thereby adjusting the return force. This design allows the helmet to meet the needs of different users, further improving the product's applicability and user experience.

[0038] Reference Figures 1-6 In some specific embodiments, a mounting post 26 is provided on one side of the connecting seat 31, and the other end of the return spring 25 is engaged with the mounting post 26. A mounting hole 27 is opened on one side of the movable paddle 28, and one end of the return spring 25 is plugged into the mounting hole 27.

[0039] Through the above technical solution, by arranging the mounting post 26 on the connecting seat 31 and opening the mounting hole 27 on the movable paddle 28, a stable fixing point and limit point are provided for the return spring 25. One end of the return spring 25 is inserted into the mounting hole 27 of the movable paddle 28, and the other end is clamped on the mounting post 26 of the connecting seat 31. This structural design ensures a reliable connection between the return spring 25, the connecting seat 31 and the movable paddle 28. Through this design, the return spring 25 can produce elastic deformation when the movable paddle 28 is pulled, and restore the movable paddle 28 to its initial position after the external force is released. The setting of the mounting post 26 and the mounting hole 27 not only provides a fixing point and a limit point for the return spring 25, but also prevents the return spring 25 from deviating or falling off during use, thereby ensuring the stability of the movable paddle 28 and the reliability of the reset function.

[0040] Specifically, the mounting column 26 on the connecting seat 31 can take a variety of forms; for example, the mounting column 26 can be a cylindrical protrusion whose diameter is slightly larger than the inner diameter of the return spring 25 to facilitate the clamping of the return spring 25. The height of the mounting column 26 can be designed according to the length of the return spring 25, and can usually be set to 1 / 4 to 1 / 3 of the length of the return spring 25 in the free state; the top of the mounting column 26 can be designed to be slightly rounded to facilitate the installation of the return spring 25.

[0041] In addition, the mounting hole 27 on the movable paddle 28 can be designed to be circular or oval, with a diameter slightly larger than the wire diameter of the reset spring 25. The depth of the mounting hole 27 can be determined according to the wire diameter of the reset spring 25 and the required insertion length, and can usually be set to 2 to 3 times the wire diameter of the reset spring 25. The inner wall of the mounting hole 27 can be designed to be smooth to reduce friction with the reset spring 25 and extend its service life.

[0042] Reference Figure 4In some specific embodiments, a first slot 15 is provided at the other end of the positioning plate 9, a first leg 13 is provided at one end of the return torsion spring 12, a first protrusion 18 is provided on one side of the first leg 13, and the first protrusion 18 is engaged with the first slot 15, a connecting tube 19 is provided at one side of the fixing frame 7, a second slot 16 is provided on one side of the connecting tube 19, the return torsion spring 12 is located inside the connecting tube 19, a second leg 14 is provided at the other end of the return torsion spring 12, a second protrusion 17 is provided on one side of the second leg 14, and the second protrusion 17 is engaged with the second slot 16.

[0043] Through the above technical solution, the first clamping groove 15 on the clamping plate 9 is clamped with the first clamping protrusion 18 on the first support leg 13 at one end of the return torsion spring 12, ensuring the stable connection between the return torsion spring 12 and the clamping plate 9; a second clamping groove 16 is provided inside the connecting tube 19 on the fixing frame 7, which is clamped with the second clamping protrusion 17 on the second support leg 14 at the other end of the return torsion spring 12, thereby realizing the reliable fixation of the return torsion spring 12 and the fixing frame 7. This double clamping structure not only improves the reliability of the connection, but also facilitates disassembly and maintenance; when the return torsion spring 12 needs to be replaced or repaired, it is only necessary to remove the first clamping protrusion 18 and the second clamping protrusion 17 from the first clamping groove 15 and the second clamping groove 16 respectively, and the return torsion spring 12 can be easily disassembled.

[0044] At the same time, placing the reset torsion spring 12 inside the connecting tube 19 not only protects the reset torsion spring 12 from interference from the external environment, but also improves the aesthetics and safety of the overall structure; this design not only solves the problem of stable connection between the protective plate 2 and the helmet body 1, but also improves the service life and safety performance of the helmet.

[0045] Reference Figure 4 In some specific embodiments, a rotating shaft 11 is provided on one side of the positioning plate 9 , one end of the rotating shaft 11 passes through the reset torsion spring 12 , and the inserted end of the rotating shaft 11 is rotatably connected to the inside of the connecting tube 19 .

[0046] Reference Figure 4-Figure 6 In some specific embodiments, a setting groove 20 is opened at one end of the positioning plate 9, and both ends of the connecting rope 21 pass through the setting grooves 20 of the two positioning plates 9 respectively, and a first limiting column 22 is provided at both ends of the connecting rope 21.

[0047] Through the above technical solution, the setting groove 20 opened at one end of the locking plate 9 is used for the connecting rope 21 to pass through. After the two ends of the connecting rope 21 pass through the setting grooves 20 of the two locking plates 9, they are fixed by the first limiting column 22. This design enables the connecting rope 21 to form a reliable connection with the locking plate 9, avoiding the connecting rope 21 from escaping from the setting groove 20 of the locking plate 9.

[0048] Reference Figure 4-Figure 6In some specific embodiments, a first connecting channel 23 is opened inside the fixing frame 7, and a connecting hole 24 is opened on one side of the fixing frame 7. The connecting hole 24 is connected to the first connecting channel 23. The two ends of the connecting rope 21 pass through the connecting holes 24 of the two fixing frames 7 respectively, so that the two ends of the connecting rope 21 slide and fit with the first connecting channel 23.

[0049] Through the above technical solution, the connecting rope 21 can slide freely in the first connecting channel 23, thereby realizing sliding cooperation between the connecting rope 21 and the fixing frame 7. This structural design effectively solves the problem of smooth sliding of the connecting rope 21 in the fixing frame 7.

[0050] Reference Figure 4-Figure 6 In some specific embodiments, two second connecting channels 32 are provided on one side of the connecting seat 31, and the two ends of the connecting rope 21 respectively pass through the two second connecting channels 32 of the connecting seat 31, so that the two ends of the connecting rope 21 slide and fit with the second connecting channels 32.

[0051] Through the above technical solution, the design of the second connecting channel 32 and the first connecting channel 23 in the fixing frame 7 form a complete connecting rope 21 guide system. When the protective plate 2 is opened and closed, the connecting rope 21 first passes through the first connecting channel 23 of the fixing frame 7, and then enters the second connecting channel 32 of the connecting seat 31. This dual guiding structure not only provides greater sliding freedom, but also ensures that the connecting rope 21 always remains in a controlled state during the entire movement process.

[0052] Reference Figure 6 In some specific embodiments, a second limiting column 30 is provided in the middle of the connecting rope 21, and the second limiting column 30 is elastic. A third slot 29 is opened on one side of the movable paddle 28, and the second limiting column 30 is engaged with the third slot 29.

[0053] Through the above technical solution, by setting an elastic second limiting column 30 in the middle of the connecting rope 21 and opening a third card slot 29 on one side of the movable paddle 28, the second limiting column 30 is engaged with the third card slot 29, thereby achieving a stable connection between the connecting rope 21 and the movable paddle 28.

[0054] In addition, the second limiting post 30 can be made of a variety of materials and structures to achieve its elastic properties. For example, it can be made of elastic rubber, elastic plastic or elastic metal; the shape of the second limiting post 30 can be cylindrical, spherical or other shapes suitable for clamping.

[0055] Reference Figure 2 In some specific embodiments, a limiting plate 5 is provided at one end of the positioning column 4, and the diameter of the limiting plate 5 is larger than the diameter of the positioning column 4. A ventilation slot 6 is opened on one side of the protective plate 2, and the ventilation slot 6 is connected to the interior of the helmet body 1.

[0056] Through the above technical solution, the diameter of the limit plate 5 is larger than the locking column 4, which can better fix the protective plate 2 and prevent the protective plate 2 from loosening or falling off during use; the ventilation slots 6 opened on the protective plate 2 are connected to the interior of the helmet, which can effectively improve the ventilation performance of the helmet; this design allows air to circulate in and out of the helmet, which helps to reduce the internal temperature of the helmet, reduce the wearer's discomfort, and improve the comfort of use.

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A motorcycle helmet with a chin-opening structure, comprising a helmet body, a protective plate hinged to one side of the helmet body, characterized in that: Two mounting seats are provided on both sides of the helmet body, one side of the mounting seat is provided with a positioning column, one side of the protective plate is provided with a connecting seat, one side of the connecting seat is hinged with a movable paddle, one side of the movable paddle is provided with a connecting rope, one side of the protective plate is provided with two fixing brackets, the two fixing brackets are located on both sides of the connecting seat, one end of the fixing bracket is provided with a limiting notch, the limiting notches of the two fixing brackets are respectively plugged into the positioning posts on both sides of the helmet body, one side of the fixing bracket is rotatably connected to a positioning plate, one end of the positioning plate is provided with a limiting convex plate, the limiting convex plate is located in the limiting notch, so that the limiting convex plate can close the limiting notch, and one side of the fixing bracket is provided with a reset torsion spring, one end of the reset torsion spring is connected to the positioning plate.

2. The motorcycle helmet with a chin-opening structure according to claim 1, characterized in that: A return spring is provided on one side of the connecting seat, and one end of the return spring is connected to the movable paddle.

3. The motorcycle helmet with a chin-opening structure according to claim 2, characterized in that: A mounting post is provided on one side of the connecting seat, and the other end of the reset spring is clamped with the mounting post. A mounting hole is opened on one side of the movable paddle, and one end of the reset spring is plugged into the mounting hole.

4. The motorcycle helmet with a chin-opening structure according to claim 1, characterized in that: The other end of the positioning plate is provided with a first slot, one end of the reset torsion spring is provided with a first leg, one side of the first leg is provided with a first locking protrusion, the first locking protrusion is engaged with the first slot, one side of the fixing frame is provided with a connecting tube, one side of the connecting tube is provided with a second slot, the reset torsion spring is located inside the connecting tube, the other end of the reset torsion spring is provided with a second leg, one side of the second leg is provided with a second locking protrusion, the second locking protrusion is engaged with the second slot.

5. The motorcycle helmet with a chin-opening structure according to claim 4, characterized in that: A rotating shaft is provided on one side of the locking plate, one end of the rotating shaft passes through the reset torsion spring, and the inserted end of the rotating shaft is rotatably connected to the interior of the connecting tube.

6. The motorcycle helmet with a chin-opening structure according to claim 1, characterized in that: One end of the positioning plate is provided with a setting groove, and the two ends of the connecting rope pass through the setting grooves of the two positioning plates respectively. The two ends of the connecting rope are provided with first limiting columns.

7. The motorcycle helmet with a chin-opening structure according to claim 6, characterized in that: A first connecting channel is provided inside the fixing frame, and a connecting hole is provided on one side of the fixing frame. The connecting hole is connected to the first connecting channel, and the two ends of the connecting rope respectively pass through the connecting holes of the two fixing frames, so that the two ends of the connecting rope slide and fit with the first connecting channel.

8. The motorcycle helmet with a chin-opening structure according to claim 7, characterized in that: Two second connection channels are provided on one side of the connection seat, and the two ends of the connection rope pass through the two second connection channels of the connection seat respectively, so that the two ends of the connection rope are slidably matched with the second connection channels.

9. The motorcycle helmet with a chin-opening structure according to claim 6, characterized in that: A second limiting column is provided in the middle of the connecting rope, and the second limiting column is elastic. A third slot is provided on one side of the movable paddle, and the second limiting column is engaged with the third slot.

10. The motorcycle helmet with a chin easy-open structure according to claim 1, characterized in that: A limiting plate is provided at one end of the positioning post, and a diameter of the limiting plate is larger than a diameter of the positioning post. A ventilation slot is provided on one side of the protection plate, and the ventilation slot is connected to the interior of the helmet body.

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