Full-helmet and half-helmet switchable helmet

Abstract

The utility model belongs to the technical field of helmets, and particularly relates to a full-helmet and half-helmet switchable helmet. The left side and the right side of the helmet body are each fixedly provided with a jaw fixing box, each jaw fixing box comprises an inner cover and an outer cover, the inner covers and the outer covers define a cavity, the two ends of the goggles are provided with fixing inserting buckles, and the fixing inserting buckles extend into the cavities and are rotationally connected with the jaw fixing boxes to achieve opening and closing of the goggles; rotating pieces are fixedly arranged at the two ends of the jaw part, and the rotating pieces are connected with the jaw fixing box in a lifting and rotating mode through a jaw switching linkage mechanism, so that the jaw part is lifted and crosses the goggles after the goggles are opened to a preset angle and rotates to the rear portion of the helmet body to achieve switching from a full helmet to a half helmet; the chin part is located at the afterbrain position of the helmet body, so that the helmet can be kept balanced front and back, the problem that a traditional full helmet is heavy in front and light in back is solved, neck fatigue is reduced, and protection safety is improved.

Description

Technical fields:

[0001] This utility model belongs to the field of helmet technology, and specifically refers to a helmet that can switch between full-face and half-face helmets. Background technology:

[0002] A motorcycle helmet is a head protection device used by motorcycle riders. Its main purpose is to protect the rider's head in the event of an impact, preventing or mitigating injury and even saving the rider's life. Motorcycle helmets are divided into half-helmets and full-face helmets. Full-face helmets offer more comprehensive head protection but lack ventilation, making them somewhat stuffy. While half-helmets address the ventilation and stuffiness issues, they neglect protection for the chin and back of the head.

[0003] Chinese utility model patent (authorization announcement number CN 216601820U, application date 2021.08.11, announcement date 2022.05.27) discloses a protective helmet, which includes: a shell, a chin guard locking component, and a switch assembly. The shell is the main body of the helmet. The chin guard is connected to the shell. The chin guard is movably connected to the shell and can move relative to the shell when subjected to external force. The locking component is movably connected to the chin guard. When subjected to external force, the locking component can move relative to the chin guard. Specifically, the locking component can move relative to the chin guard to a locked position or a free position. The switch assembly is connected to the locking component. The switch assembly can drive the locking component from the locked position to the free position. A first buckle is fixedly provided on the shell. A second buckle is fixedly provided on the locking component. The first buckle and the second buckle may be provided with a shape-fitting structure. When the locking element is in the locked position, the second latch engages with the first latch, fixing the chin protector relatively to the shell. When the locking element is in the free position, the second latch disengages from the first latch, allowing the chin protector to move relative to the shell under force. Therefore, this protective helmet can switch between half-helmet and full-helmet configurations. Combined with its accessories... Figure 6 When the helmet is in a half-helmet position, the chin guard is located near the forehead, causing the helmet's center of gravity to shift forward, resulting in a "front-heavy" or "back-light" situation that can easily lead to neck fatigue. Furthermore, this shift in the center of gravity also affects head movement flexibility. In scenarios such as turning while riding or sudden braking, the user needs to exert more neck strength to maintain head stability, reducing safety. Summary of the Invention:

[0004] The purpose of this invention is to provide a helmet that can be switched between a full-face helmet and a half-face helmet, making the overall center of gravity of the helmet more stable and reducing neck fatigue.

[0005] This utility model is implemented as follows:

[0006] A helmet that can switch between full-face and half-face helmets includes a helmet body, a goggle, and a chin guard. Chin guards are fixed on the left and right sides of the helmet body. Each chin guard includes an inner cover and an outer cover, which together form a chamber. Each end of the goggle is provided with a fixing buckle. The fixing buckle extends into the chamber and is rotatably connected to the chin guard to open and close the goggle.

[0007] Rotating components are fixed at both ends of the chin component. The rotating components are connected to the chin fixing box through the chin switching linkage mechanism, which can be raised and rotated. This allows the chin component to be raised and pass over the goggles after the goggles are opened to a preset angle, and rotated to the rear of the helmet to achieve the switch from a full-face helmet to a half-face helmet.

[0008] In the aforementioned convertible full-face and half-face helmet, the inner cover is provided with a first sliding groove and a second sliding groove adapted to the movement path of the goggles, and the fixing buckle is provided with a first slider and a second slider. During the opening and closing of the goggles, the first slider and the second slider slide along the first sliding groove and the second sliding groove, respectively.

[0009] In the aforementioned convertible full-face and half-face helmet, the inner cover between the first and second sliding grooves is provided with a movable groove that matches the movement trajectory of the goggles. A stop member is provided on the inner cover close to the side wall of the helmet body. The upper end of the stop member extends into the movable groove. The upper edge of the stop member, the upper edge of the movable groove, and the corresponding side edge form a third sliding groove. The two ends of the upper edge of the stop member are recessed to form limiting points. The stop member is elastically connected to the outer cover through an elastic element. A sliding block is provided on the fixing buckle. During the opening and closing of the goggles, the sliding block slides along the third sliding groove and the upper edge of the stop member. Under the action of the sliding block, the stop member can move closer to or away from the upper edge of the movable groove.

[0010] In the aforementioned convertible full-face and half-face helmet, the inner cover is provided with two or more hook-shaped slide rods, and the upper edge of the stop component is provided with a guide hole in the direction close to or far from the upper edge of the movable groove. The outer end of the hook-shaped slide rod passes through the guide hole and is located on the outer side wall of the stop component to achieve axial limiting of the stop component.

[0011] In the aforementioned convertible full-face and half-face helmet, the stop component is provided with one or more through holes, an upper spring seat is provided at the upper end of the through hole, and a lower spring seat is provided at the corresponding position on the inner cover. The lower spring seat passes through the through hole, and the two ends of the first spring are respectively abutted on the upper spring seat and the lower spring seat.

[0012] In the aforementioned convertible full-face and half-face helmet, the chin switching linkage mechanism includes a chin rotation shaft. One end of the chin rotation shaft is fixedly connected to a rotating component via a pivot. The chin rotation shaft is located below the fixed buckle. The other end of the chin rotation shaft is rotatably connected to the inner cover. A fourth sliding groove is provided on the outer cover to drive the chin component to lift. The fourth sliding groove is inclined or vertical. A fifth sliding groove is also provided on the outer cover to drive the chin component to rotate. The fifth sliding groove is located below the fourth sliding groove. A sliding column is also provided on the rotating component. When the chin component rotates and lifts, the pivot slides along the fourth sliding groove, and the sliding column slides along the fifth sliding groove. In the full-face helmet state, the fixed buckle rests against the chin rotation shaft.

[0013] In the aforementioned convertible full-face and half-face helmet, the chin rotation shaft also includes a downwardly extending guide leg. The inner cover is provided with a guide groove, which is on the same arc as the fourth sliding groove. A first limiting protrusion is provided on the side wall of the guide groove, and a second limiting protrusion is provided on the side wall connected to the guide leg. In the full-face helmet state, the first limiting protrusion abuts against the second limiting protrusion to restrict the rotation of the chin rotation shaft.

[0014] In the aforementioned convertible full-face and half-face helmet, the fourth slide groove has a chin rear rotation fixing component rotatably mounted on the outer cover on one side near the rear of the helmet body. One end of the chin rear rotation fixing component is rotatably connected to the outer cover, and the other end abuts against a protrusion on the chin rotation shaft. The chin rear rotation fixing component is elastically connected to the outer cover through a second spring.

[0015] In the aforementioned convertible full-face and half-face helmet, a third slider is provided on the chin rear rotating fixing component, and a sixth sliding groove is provided on the outer cover, with the third slider sliding within the sixth sliding groove.

[0016] In the aforementioned convertible full-face and half-face helmet, a switch key mounting base extends outward from the lower end of the inner cover. The switch key mounting base has a switch groove. The switch key is mounted on the switch key mounting base via a fourth slider and can slide along the switch groove. A chin front rotation fixing member is provided on the outer cover between the chin rotation shaft and the switch key. One end of the chin front rotation fixing member is rotatably connected to the outer cover, and the other end is limited between the chin front rotation fixing member and the upper limiting part of the switch key. The chin front rotation fixing member is elastically connected to the outer cover via a second spring. Specifically: in the full-face helmet state, the limiting part restricts the rotation of the chin front rotation fixing member, thereby locking the chin rotation shaft; in the half-face helmet state, the switch key slides to position the limiting part on one side of the chin front rotation fixing member, releasing the restriction on the downward rotation of the chin rotation shaft.

[0017] The outstanding advantages of this utility model compared to the prior art are:

[0018] This invention offers convenient operation and meets the need for quick adjustments while riding. During switching, the chin strap component first rises above the visor, then rotates to the back of the head, avoiding interference with the visor or helmet structure, ensuring smooth operation and component durability. Furthermore, because the chin strap component is located at the back of the helmet, it maintains front-to-back balance, avoiding the front-heavy problem of traditional full-face helmets, reducing neck fatigue, and improving safety. The rear-mounted chin strap design makes the helmet's overall center of gravity more stable, reducing wind resistance during high-speed riding and improving handling comfort; it also provides additional protection for the back of the head, avoiding the insufficient protection of the back of the head found in traditional half-helmets. Attached image description:

[0019] Figure 1 This is a schematic diagram of the full-face helmet of this utility model;

[0020] Figure 2 This is a schematic diagram of the half-helmet of this utility model;

[0021] Figure 3 This is a schematic diagram showing the connection between the goggles, chin unit, and chin fixing box in the full-face helmet configuration of this utility model.

[0022] Figure 4 yes Figure 3 A diagram showing the chin assembly after disassembly.

[0023] Figure 5 yes Figure 3 A schematic diagram showing the disassembled lower chin components and rotating parts;

[0024] Figure 6 yes Figure 3 A schematic diagram showing the middle and lower chin components, rotating parts, and outer cover after disassembly.

[0025] Figure 7 This is a schematic diagram showing that the two ends of the protective goggles of this utility model are provided with fixing buckles;

[0026] Figure 8 This is one of the schematic diagrams of the inner cover of this utility model;

[0027] Figure 9 This is the second schematic diagram of the inner cover of this utility model;

[0028] Figure 10 This is a schematic diagram of the outer cover of this utility model;

[0029] Figure 11 This is a schematic diagram of the chin rotation shaft of this utility model;

[0030] Figure 12 This is a schematic diagram of the gear shift component of this utility model;

[0031] Figure 13 This is a schematic diagram of the switch key of this utility model.

[0032] In the diagram: 1. Helmet body; 2. Goggles; 3. Chin assembly; 4. Chin mounting box; 5. Inner cover; 6. Outer cover; 7. Fixing buckle; 8. Rotating component; 9. First slide groove; 10. Second slide groove; 11. First slider; 12. Second slider; 13. Baffle; 14. Movable groove; 15. Stop component; 16. Third slide groove; 17. Limiting point; 18. Sliding block; 19. Hook-shaped slide rod; 20. Guide hole; 21. Through hole; 22. Upper spring seat; 23. Lower spring seat; 24. Chin rotation axis; 25. Rotating axis ; 26. Fourth slide groove; 27. Fifth slide groove; 28. Guide support foot; 29. ​​Guide groove; 30. First limiting protrusion; 31. Second limiting protrusion; 32. Chin rear rotation fixing part; 33. Protrusion; 34. First spring seat; 35. Second spring seat; 36. Third slider; 37. Sixth slide groove; 38. Switch key mounting seat; 39. Switch slide groove; 40. Switch key; 41. Fourth slider; 42. Chin front rotation fixing part; 43. Third spring seat; 44. Fourth spring seat; 45. Limiting part. Detailed implementation method:

[0033] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —13:

[0034] This invention provides a helmet that can switch between a full-face and a half-face helmet. The helmet includes a helmet body 1, a goggle 2, and a chin guard 3. A chin guard 4 is fixed to the left and right sides of the helmet body 1. Each chin guard 4 includes an inner cover 5 and an outer cover 6. The inner cover 5 and outer cover 6 are fastened to the helmet body 1 after being closed, forming a cavity between them. The goggle 2 has fixing buckles 7 at both ends, which extend into the cavity and rotatably connect with the chin guard 4 to open and close the goggle 2. The chin guard 3 is fixed to a rotating component 8 at both ends. The rotating component 8 is connected to the chin guard 4 via a chin switching linkage mechanism, allowing it to be raised and rotated. The chin switching linkage mechanism is located within the cavity. After the goggle 2 is opened to a preset angle, the chin guard 3 rotates and rises, making its height higher than the goggle 2, and then rotates past the goggle 2 to the back of the helmet body 1, thus switching from a full-face helmet to a half-face helmet.

[0035] This invention allows for easy switching between full-face helmet mode (chin protection) and half-face helmet mode (rear chin) without manual disassembly, providing convenient operation and meeting the need for quick adjustments while riding. During the switching process, the chin component 3 first rises above the visor 2, then rotates to the back of the head, avoiding interference with the visor 2 or the helmet structure 1, ensuring smooth operation and component durability. Furthermore, because the chin component 3 is located at the back of the helmet 1, it helps maintain the helmet's front-to-back balance, avoiding the front-heavy and back-light problem of traditional full-face helmets, reducing neck fatigue. The rear chin component 3 design makes the helmet's overall center of gravity more stable, reducing wind resistance during high-speed riding and improving handling comfort; it also provides additional protection for the back of the head, avoiding the insufficient back-head protection of traditional half-face helmets.

[0036] Furthermore, the inner cover 5 is provided with a first sliding groove 9 and a second sliding groove 10 that are adapted to the movement path of the goggles 2, and the fixing buckle 7 is provided with a first slider 11 and a second slider 12. During the opening and closing of the goggles 2, the first slider 11 and the second slider 12 slide along the first sliding groove 9 and the second sliding groove 10, respectively.

[0037] To achieve lateral positioning of the fixing buckle 7 on the inner cover 5, the first slider 11 is configured as a hook-shaped slider, specifically, a hook is provided at the outer end of the slider body. The hook extends out of the inner cover 5 from inside the cavity through the first sliding groove 9 for limiting the position. In addition, this utility model also forms a baffle 13 on the inner cover 5 inside the cavity, along the lower edge of the second sliding groove 10. The lower end of the fixing buckle 7 is located between the baffle 13 and the inner cover 5 to position the lower end of the fixing buckle 7.

[0038] Furthermore, this utility model provides an movable groove 14 on the inner cover 5 between the first sliding groove 9 and the second sliding groove 10, which is adapted to the movement trajectory of the goggles 2. A stop member 15 is provided on the inner cover 5 close to the side wall of the helmet body 1. The upper end of the stop member 15 extends into the movable groove 14. The upper edge of the stop member 15, the upper edge of the movable groove 14, and the corresponding side edge form a third sliding groove 16. The two ends of the upper edge of the stop member 15 are recessed to form limiting points 17. The stop member 15 is elastically connected to the inner cover 5 through an elastic member. A sliding block 18 is provided on the fixed buckle 7. During the opening and closing of the goggles 2, the sliding block 18 slides along the third sliding groove 16 and the upper edge of the stop member 15. Under the action of the sliding block 18, the stop member 15 can move closer to or away from the upper edge of the movable groove 14.

[0039] The movable groove 14 on the inner cover 5 is designed according to the movement trajectory of the goggles 2, ensuring that the goggles 2 move along a preset path during sliding, avoiding deviation or jamming, and improving the smoothness of operation. The third sliding groove 16 formed by the stop 15 and the upper edge of the movable groove 14 provides a clear movement track for the sliding block 18 on the fixed buckle 7. When the sliding block 18 slides along the third sliding groove 16, it can drive the goggles 2 to open and close in a predetermined direction, ensuring the stability of movement.

[0040] Furthermore, the inner cover 5 is provided with two or more hook-shaped slide rods 19, and the stop member 15 is provided with guide holes 20 along the direction close to or away from the upper edge of the movable groove 14. The outer end of the hook-shaped slide rod 19 passes through the guide hole 20 and is located on the outer side wall of the stop member 15 to achieve axial limiting of the stop member 15.

[0041] Meanwhile, the stop member 15 is also provided with one or more through holes 21. An upper spring seat 22 is provided at the upper end of the through hole 21, and a lower spring seat 23 is provided at the corresponding position on the inner cover 5. The lower spring seat 23 passes through the through hole 21, and the two ends of the spring are respectively abutted on the upper spring seat 22 and the lower spring seat 23.

[0042] When opening the goggles 2, manually rotate the goggles 2. Guided by the first slide groove 9, the second slide groove 10, and the third slide groove 16, the retaining buckle 7 rotates upwards until it is open. At this time, the sliding block 18 is located within the upper limit point. This prevents the goggles 2 from automatically rotating downwards under its own weight. Conversely, rotating them downwards closes the goggles 2.

[0043] When the sliding block 18 moves away from the two limiting points 17, the limiting points 17 are recessed, which acts on the stop member 15, causing it to move downwards, at which point the spring is compressed. When the sliding block 18 is located in the third slide groove 16, the stop member 15 automatically resets under the action of the spring.

[0044] This invention uses an elastic connection between the stop component 15 and the inner cover 5, which can actively absorb the rigid force generated by collision or misalignment between components during the process of the sliding block 18 moving in and out of the limit point 17 and moving along the third slide groove 16. For example, when the sliding block 18 moves rapidly due to external impact, the spring buffers it in time, preventing the sliding block 18 from getting stuck between the stop component 15 and the movable groove 14 due to excessive instantaneous force, thus ensuring that the goggles 2 always open and close smoothly.

[0045] It should be noted that the chin switching linkage mechanism is located inside the chin fixing box 4, including a chin rotation shaft 24. One end of the chin rotation shaft 24 is fixedly connected to the rotating component 8 via a rotating shaft 25. The chin rotation shaft 24 is located below the fixing buckle 7, and the other end of the chin rotation shaft 24 is rotatably connected to the inner cover 5. A fourth sliding groove 26 for driving the chin component 3 to lift is provided on the outer cover 6. The fourth sliding groove 26 is inclined or vertical. A fifth sliding groove 27 for driving the chin component 3 to rotate is also provided on the outer cover 6. The fifth sliding groove 27 is located below the fourth sliding groove 26. A sliding column is also provided on the rotating component 8. When the chin component 3 rotates and lifts, the rotating shaft 25 slides along the fourth sliding groove 26, and the sliding column slides along the fifth sliding groove 27. In the full-face helmet state, the fixing buckle 7 rests against the chin rotation shaft 24. Specifically, the rotating shaft 25 passes through the hole on the rotating part 8 and the fourth sliding groove 26 and is inserted into one end of the chin rotating shaft 24 to achieve circumferential positioning, and is fixedly connected to the chin rotating shaft 24 by screws and nuts.

[0046] The opening process of the chin component 3 is as follows:

[0047] Open from full-face helmet mode:

[0048] By manually rotating the chin component 3 upwards, the goggles 2 will rotate upwards along with the chin component 3 due to their position. The fixing buckle 7 will move upwards from the lower end of the first slide groove 9, the second slide groove 10, and the third slide groove 16.

[0049] At the same time, the rotating shaft 25 slides upward along the fourth groove 26 on the outer cover 6. Since the fourth groove 26 is inclined or vertical, the upward movement of the rotating shaft 25 directly drives the rotating component 8 and the chin rotating shaft 24 connected thereto to rise synchronously. During this process, the movement path of the rotating shaft 25 strictly follows the shape of the fourth groove 26, ensuring that the chin component 3 is smoothly lifted upward from the initial position.

[0050] Opening: As the rotating shaft 25 moves upward along the fourth slide groove 26, the sliding column on the rotating component 8 slides forward and downward along the fifth slide groove 27. The fifth slide groove 27 is often designed as an arc or a sloping curve, and the movement trajectory of the sliding column within this groove has an arc characteristic. This special trajectory causes the sliding column to generate a torque around the rotating shaft 25 during movement, which is transmitted to the chin rotating shaft 24 through the rotating component 8, thereby driving the chin component 3 to rotate around the rotating shaft 25. As the sliding column moves within the fifth slide groove 27, the rotation angle of the chin component 3 gradually increases.

[0051] When the pivot 25 moves to the top of the fourth slide groove 26 and the slide column reaches the front end of the fifth slide groove 27, the chin component 3 completes the entire linkage action and is in the fully open state. At this time, the position and angle of the chin component 3 meet the usage requirements and are convenient for the wearer to operate.

[0052] Reset: When the chin component 3 is closed, a reverse driving force is applied, and the rotating shaft 25 and the sliding column move in opposite directions along the fourth sliding groove 26 and the fifth sliding groove 27 respectively, repeating the reverse operation of the above linkage process. The sliding column moves from the front end to the rear end of the fifth sliding groove 27, and the rotating shaft 25 moves from the top end of the fourth sliding groove 26 to the lowest position, until the rotating shaft 25 returns to the lowest position of the fourth sliding groove 26 and the sliding column returns to the rear end of the fifth sliding groove 27.

[0053] It should be noted that in this invention, when the chin component 3 is in the closed state (full-face helmet), its positioning is achieved through the following three structures:

[0054] The present invention also includes a downwardly extending guide foot 28 on the chin rotation shaft 24. The inner cover 5 is provided with a guide groove 29, which is on the same arc line as the fourth sliding groove 26. A first limiting protrusion 30 is provided on the side wall adjacent to the guide groove 29 and the guide foot 28, and a second limiting protrusion 31 is provided on the side wall connected to the guide foot 28. In the full helmet state, the first limiting protrusion 30 abuts against the second limiting protrusion 31 to restrict the rotation of the chin rotation shaft 24.

[0055] Furthermore, the fourth slide groove 26 has a chin rear rotation fixing member 32 rotatably mounted on the outer cover 6 on the side near the rear of the helmet body 1. One end of the chin rear rotation fixing member 32 is rotatably connected to the outer cover 6, and the other end abuts against the protrusion 33 on the chin rotation shaft 24. The chin rear rotation fixing member 32 is provided with a first spring seat 34, and the outer cover 6 is provided with a second spring seat 35. The two ends of the second spring are abutted against the first spring seat 34 and the second spring seat 35, so that the chin rear rotation fixing member 32 is elastically connected to the outer cover 6, and the chin rear rotation fixing member 32 is kept abutting against the protrusion 33 to achieve the purpose of positioning.

[0056] In order to make the chin rear rotating fixing part 32 rotate smoothly, a third slider 36 is provided on the chin rear rotating fixing part 32, and a sixth sliding groove 37 is provided on the outer cover 6, and the third slider 36 slides in the sixth sliding groove 37.

[0057] Additionally, a switch key mounting base 38 extends outward from the lower end of the inner cover 5. A switch key mounting base 38 is provided with a switch slide groove 39. The switch key 40 is mounted on the switch key mounting base 38 and can slide along the switch slide groove 39 via a fourth slider 41. A chin front rotation fixing member 42 is provided on the outer cover 6 between the chin rotation shaft 24 and the switch key 40. One end of the chin front rotation fixing member 42 is rotatably connected to the outer cover 6, and a third spring seat 4 is provided at the other end of the chin front rotation fixing member 42. 3. A fourth spring seat 44 is provided on the outer cover 6, and a third spring is provided between the third spring seat 43 and the fourth spring seat 44 so that the chin front rotation fixing member 42 is elastically connected to the outer cover 6. When switching to a full-face helmet, the other end of the chin front rotation fixing member 42 is restricted to rotate downward by the upper end of the switching key 40, thereby restricting the rotation of the chin rotation shaft 24. When switching to a half-face helmet, the limiting part 45 at the upper end of the switching key 40 slides to one side of the chin front rotation fixing member 42, releasing the restriction on the downward rotation of the chin rotation shaft 24.

[0058] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made to the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A helmet that can switch between full-face and half-face helmets, comprising a helmet body (1), goggles (2), and a chin guard (3), characterized in that: Chin fixing boxes (4) are fixed on the left and right sides of the helmet body (1). The chin fixing box (4) includes an inner cover (5) and an outer cover (6). The inner cover (5) and the outer cover (6) together form a cavity. The two ends of the goggles (2) are provided with fixing buckles (7). The fixing buckles (7) extend into the cavity and rotate to connect with the chin fixing box (4) to realize the opening and closing of the goggles (2). The chin component (3) is fixed with rotating parts (8) at both ends. The rotating parts (8) are connected to the chin fixing box (4) through the chin switching linkage mechanism, so that the chin component (3) is raised and passes over the goggles (2) after the goggles (2) are opened to a preset angle, and rotates to the rear of the helmet body (1) to realize the switch from full helmet to half helmet.

2. The convertible full-face and half-face helmet according to claim 1, characterized in that: The inner cover (5) is provided with a first slide groove (9) and a second slide groove (10) that are adapted to the movement path of the goggles (2). The fixing buckle (7) is provided with a first slider (11) and a second slider (12). During the opening and closing of the goggles (2), the first slider (11) and the second slider (12) slide along the first slide groove (9) and the second slide groove (10) respectively.

3. The helmet that can be switched between full-face and half-face helmets according to claim 2, characterized in that: An active groove (14) adapted to the movement trajectory of the goggles (2) is provided on the inner cover (5) between the first groove (9) and the second groove (10). A stop (15) is provided on the inner cover (5) close to the side wall of the helmet body (1). The upper end of the stop (15) extends into the active groove (14). The upper edge of the stop (15) forms a third groove (16) with the upper edge of the active groove (14) and the corresponding side edge. The upper edge of the goggles (2) is recessed at both ends to form a limiting point (17). The stop (15) is elastically connected to the outer cover (6) through an elastic element. The fixed buckle (7) is provided with a sliding block (18). During the opening and closing of the goggles (2), the sliding block (18) slides along the third slide groove (16) and the upper edge of the stop (15). Under the action of the sliding block (18), the stop (15) can move closer to or further away from the upper edge of the movable groove (14).

4. The convertible full-face and half-face helmet according to claim 3, characterized in that: The inner cover (5) is provided with two or more hook-shaped slide rods (19), and the stop part (15) is provided with a guide hole (20) along the direction of the upper edge of the moving groove (14). The outer end of the hook-shaped slide rod (19) passes through the guide hole (20) and is located on the outer side wall of the stop part (15) to realize the axial limit of the stop part (15).

5. The convertible full-face / half-face helmet according to claim 3 or 4, characterized in that: The stop component (15) is also provided with one or more through holes (21). An upper spring seat (22) is provided at the upper end of the through hole (21). A lower spring seat (23) is provided at the corresponding position on the inner cover (5). The lower spring seat (23) passes through the through hole (21). The two ends of the first spring are respectively abutted on the upper spring seat (22) and the lower spring seat (23).

6. The convertible full-face and half-face helmet according to claim 1, characterized in that: The chin switching linkage mechanism includes a chin rotating shaft (24). One end of the chin rotating shaft (24) is fixedly connected to the rotating component (8) via a rotating shaft (25). The chin rotating shaft (24) is located below the fixed buckle (7). The other end of the chin rotating shaft (24) is rotatably connected to the inner cover (5). A fourth sliding groove (26) for driving the chin component (3) to lift is provided on the outer cover (6). The fourth sliding groove (26) is inclined or vertical. A fifth sliding groove (27) for driving the chin component (3) to rotate is also provided on the outer cover (6). The fifth sliding groove (27) is located below the fourth sliding groove (26). A sliding column is also provided on the rotating component (8). When the chin component (3) rotates and lifts, the rotating shaft (25) slides along the fourth sliding groove (26) and the sliding column slides along the fifth sliding groove (27). In the full helmet state, the fixed buckle (7) rests against the chin rotating shaft (24).

7. The convertible full-face and half-face helmet according to claim 6, characterized in that: The chin rotation shaft (24) also includes a downwardly extending guide foot (28). The inner cover (5) is provided with a guide groove (29). The guide groove (29) and the fourth slide groove (26) are on the same arc line. The side wall of the guide groove (29) is provided with a first limiting protrusion (30). The side wall connected to the guide foot (28) is provided with a second limiting protrusion (31). In the full helmet state, the first limiting protrusion (30) abuts against the second limiting protrusion (31) to restrict the rotation of the chin rotation shaft (24).

8. The convertible full-face and half-face helmet according to claim 6, characterized in that: The fourth slide (26) has a chin rear rotation fixing member (32) rotatably mounted on the outer cover (6) on the side near the rear of the helmet body (1). One end of the chin rear rotation fixing member (32) is rotatably connected to the outer cover (6), and the other end abuts against the protrusion (33) on the chin rotation shaft (24). The chin rear rotation fixing member (32) is elastically connected to the outer cover (6) through the first spring.

9. The convertible full-face and half-face helmet according to claim 8, characterized in that: The chin rear rotating fixing part (32) is provided with a third slider (36), and the outer cover (6) is provided with a sixth sliding groove (37), and the third slider (36) slides in the sixth sliding groove (37).

10. The convertible full-face and half-face helmet according to claim 6, characterized in that: The lower end of the inner cover (5) extends outward to form a switch key mounting base (38). A switch key mounting base (38) is provided with a switch slide groove (39). The switch key (40) is mounted on the switch key mounting base (38) via a fourth slider (41), and the switch key (40) can slide along the switch slide groove (39). A chin front rotation fixing member (42) is provided on the outer cover (6) between the chin rotation shaft (24) and the switch key (40). One end of the chin front rotation fixing member (42) is rotatably connected to the outer cover (6), and the other end is limited to... The chin front rotating fixing member (42) is located between the limiting part (45) at the upper end of the switching key (40), and the chin front rotating fixing member (42) is elastically connected to the outer cover (6) by a second spring; wherein: in the full helmet state, the limiting part (45) restricts the rotation of the chin front rotating fixing member (42) to lock the chin rotation shaft (24); in the half helmet state, the switching key (40) slides to make the limiting part (45) located on one side of the chin front rotating fixing member (42), releasing the restriction on the downward rotation of the chin rotation shaft (24).

Images