An adjustable chin guard helmet

Abstract

This application discloses an adjustable chin guard helmet, relating to the field of personal protective equipment. It includes a helmet shell and a chin guard rotator. A locking component is provided on the helmet shell. The chin guard rotator is rotatably mounted on the helmet shell. The helmet has two states depending on the relative angle between the chin guard rotator and the helmet shell: in the first state, the chin guard rotator is located on the front side of the helmet shell; in the second state, the chin guard rotator is located on the rear side of the helmet shell. The locking component is slidably connected to the outer surface of the helmet shell, with the sliding direction parallel to the outer surface of the helmet shell. A locking groove is formed on the chin guard rotator. In the second state, the opening of the locking groove is aligned with the locking component, allowing the locking component to slide in. The side wall of the locking component sliding into the locking groove abuts against the groove wall. This application uses the movement of the locking component to lock the chin guard rotator in the second state, making it less susceptible to negative impacts from external forces on the movement of the locking component, resulting in high positional stability of the chin guard rotator.

Description

Technical Field

[0001] This application relates to the technical field of personal protective equipment, and more specifically, to an adjustable chin guard helmet. Background Technology

[0002] Helmets are head protection devices designed specifically for everyday civilian use. Civilian helmets mainly include two categories: motorcycle helmets and helmets for bicycles, skateboards, and roller skates. They consist of components such as a shell, a cushioning layer, and a comfort liner, and the materials used must be impact-resistant and weather-resistant.

[0003] Chinese patent document CN117940037A discloses a rotating body fixing device for a helmet. The helmet includes a helmet body and a rotating body rotatably connected to the helmet body. The rotating body is a chin guard. In use, the chin guard is located at the chin area in front of the user's head, meaning the rotating body protects the chin. After rotating a certain angle, the rotating body moves to the rear of the helmet body, thus opening the face in front of the helmet. The fixing device includes a fixing part and a guiding part. The guiding part is fixed to the helmet body, and the fixing part is slidably disposed relative to the fixing part. During sliding, the degree of protrusion of the fixing part from the helmet body changes with its movement. When the fixing part protrudes from the helmet body and the chin guard is located at the rear of the helmet body, one surface (upper surface) of the fixing part contacts one side (lower side) of the chin guard, preventing the chin guard from rotating and thus stably fixing the chin guard. The fixing part has a protrusion, and the guide part has a second step. When the fixing part slides from one side (front side) to the other side (rear side) and is on the other side (rear side) of the guide part, the end of the protrusion can remain against the second step.

[0004] As can be seen from the above technical solution, the stability of the fixed part when it is located behind the guide part depends on the contact state maintained by the protrusion and the second step. If the fixed part is subjected to vertical pressing, squeezing, touching or other forces, the fixed part will tend to move inward towards the guide part. The protrusion will easily detach from the second step, and the fixed part will also move further towards the direction of retracting into the helmet body and towards the front of the guide part. That is, the fixed part is easy to detach from the chin guard, and the stability of the chin guard cannot be maintained. Utility Model Content

[0005] In view of this, the purpose of this application is to provide an adjustable chin guard helmet that effectively positions the rotating body of the guard plate and prevents unnecessary rotation of the guard plate.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] An adjustable chin guard helmet includes a helmet shell and a chin guard rotator. The helmet shell has a locking element. The chin guard rotator is rotatably mounted on the helmet shell. The helmet has two states depending on the relative angle between the chin guard rotator and the helmet shell: in the first state, the chin guard rotator is located on the front side of the helmet shell; in the second state, the chin guard rotator is located on the rear side of the helmet shell. The locking element is slidably connected to the outer surface of the helmet shell, with the sliding direction parallel to the outer surface of the helmet shell. The chin guard rotator has a locking groove. In the second state, the opening of the locking groove is aligned with the locking element, allowing the locking element to slide in. The side wall of the locking element sliding into the locking groove abuts against the groove wall.

[0008] Preferably, the locking member has an elastic protrusion on its side, and an abutting protrusion is fixedly connected to the helmet shell. The abutting protrusion and the elastic protrusion abut against each other. During the process of the locking member entering the locking groove, the elastic protrusion passes the abutting protrusion.

[0009] Preferably, the locking member has a deformation hole, which is located on the side of the elastic protrusion away from the abutting protrusion.

[0010] Preferably, a force-applying protrusion is fixedly connected to the side of the locking member away from the helmet shell, and the length direction of the force-applying protrusion is perpendicular to the moving direction of the locking member.

[0011] Preferably, the rotatable body of the protective plate includes a chin guard and a connecting plate that are detachably connected to each other. The connecting plate is rotatably connected to the helmet shell, and the locking groove is formed on the connecting plate.

[0012] Preferably, the device also includes a protective goggle assembly, which includes a mounting body and a goggle plate connected to each other. The mounting body is rotatably connected to the helmet shell. The mounting body has an arc-shaped boss, and the connecting plate has an arc-shaped protrusion. In a first state, the arc-shaped boss is located below the arc-shaped protrusion. By lifting the protective plate rotating body, the protective plate rotating body drives the goggle plate to move synchronously. When the arc-shaped boss and the arc-shaped protrusion abut against each other, the arc-shaped protrusion supports the arc-shaped boss in its movement until the arc-shaped boss moves to the outside of the arc-shaped protrusion, and the goggle plate moves to its highest position. In the first position, the arc-shaped protrusion slides relative to the arc-shaped boss, causing the protective plate rotating body to continue to lift relative to the mirror plate; in the second state, the arc-shaped boss and the arc-shaped protrusion abut against each other, and the arc-shaped protrusion is farther away from the rotation center of the mounting body relative to the arc-shaped boss. By lowering the protective plate rotating body, the arc-shaped protrusion abuts against the arc-shaped boss, causing the mirror plate to move to the highest position. The arc-shaped boss moves to the outside of the arc-shaped protrusion, and the arc-shaped protrusion slides relative to the arc-shaped boss, causing the protective plate rotating body to continue to move downward relative to the mirror plate.

[0013] Preferably, the first end of the arc-shaped protrusion has a pointed end, which is located on the inner edge of the arc-shaped protrusion. In the first state, the pointed end faces the arc-shaped protrusion. When the pointed end abuts against the arc-shaped protrusion, as the arc-shaped protrusion rotates, the pointed end guides the arc-shaped protrusion to the outer edge of the arc-shaped protrusion. Alternatively, the second end of the arc-shaped protrusion has a supporting end. In the second state, the arc center corresponding to the arc-shaped protrusion is located on the side closer to the arc-shaped protrusion. The supporting end abuts against one side of the arc-shaped protrusion. By lowering the protective plate rotating body, the supporting end pushes the arc-shaped protrusion upward, causing the mirror plate to move to the highest position.

[0014] Preferably, the helmet shell has a travel groove, the trajectory of which is arc-shaped and the center of the arc is located on the rotation axis of the connecting plate. A travel slider is fixedly connected to the connecting plate and is located in the travel groove. In the first and second states, the travel slider is in contact with the two end walls of the travel groove. A positioning protrusion is fixedly connected to the groove wall of the travel groove, and a positioning groove is provided on the travel slider. In the second state, the positioning protrusion is located in the positioning groove.

[0015] Preferably, both the mounting body and the helmet shell are provided with magnets. When the visor and the protective plate rotating body in the first state are located on the same side of the helmet shell, the magnets on the mounting body and the magnets on the helmet shell attract each other.

[0016] Preferably, both the mounting body and the helmet shell are provided with mounting holes for inserting magnets, and the axis of the mounting holes is perpendicular to the rotation axis of the mounting body.

[0017] The adjustable chin guard helmet provided in this application allows the chin guard rotor to rotate freely within its own stroke range when the locking member is not slid into the locking groove. In the second state, since the locking member can now enter the locking groove, the contact between the locking member and the locking groove prevents the rotor from moving, thus maintaining its stability. Because the direction of movement of the locking member is parallel to the outer surface of the helmet shell, forces perpendicular to the surface of the helmet shell are essentially unable to cause changes in the position of the locking member, resulting in high positional stability of the locking member and even higher stability of the chin guard rotor in the second state. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A schematic diagram of the overall structure of an adjustable chin guard helmet in its first state;

[0020] Figure 2 A schematic diagram of the overall structure of an adjustable chin guard helmet in its second state;

[0021] Figure 3 This is an exploded structural diagram of the protective plate rotating body, where the connecting plate is located on the helmet shell;

[0022] Figure 4 A schematic diagram of the structure when the locking element is inserted into the locking groove;

[0023] Figure 5 A schematic diagram of the structure in which the locking element is inserted into the locking groove;

[0024] Figure 6 This is a schematic diagram showing the relative relationship between the upper part of the visor and the helmet shell when the protective goggle assembly is closed.

[0025] Figure 7 This is a diagram showing the positional relationship between the arc-shaped boss and the arc-shaped protrusion in the first state;

[0026] Figure 8 This is a diagram showing the positional relationship between the arc-shaped boss and the arc-shaped protrusion in the second state;

[0027] Figure 9 This diagram shows the positional relationship between the arc-shaped boss and the arc-shaped protrusion as the rotating body of the guard plate moves from the second state to the first state.

[0028] Figures 1-9 In the accompanying drawings, the reference numerals include:

[0029] 1. Helmet shell; 11. Vision window; 13. Travel groove; 131. Positioning protrusion; 2. Protective plate rotating body; 21. Chin guard; 211. Mating hole; 22. Connecting plate; 221. Locking groove; 222. Abutting protrusion; 223. Mating protrusion; 224. Travel slider; 2241. Positioning groove; 23. Arc-shaped protrusion; 231. Sharp corner end; 232. Holding end; 3. Locking element; 31. Force-applying protrusion; 32. Elastic protrusion; 33. Deformation hole; 4. Protective goggle assembly; 41. Mounting body; 411. Arc-shaped boss; 42. Mirror plate; 5. Magnet; 51. Mounting hole. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar words used in this application do not indicate any order, quantity, or importance. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. An embodiment of this application discloses an adjustable chin guard helmet.

[0032] The core of this application is to provide a helmet with an adjustable chin guard.

[0033] like Figure 1 and 2 As shown, the adjustable chin guard helmet provided in this application includes a helmet shell 1, a chin guard rotator 2, and a protective visor assembly 4. Both the chin guard rotator 2 and the protective visor assembly 4 are rotatably mounted on the helmet shell 1. A viewing window 11 is provided on the front side of the helmet shell 1. The helmet has two states depending on the relative angle between the chin guard rotator 2 and the helmet shell 1. In the first state, the chin guard rotator 2 is located on the front side of the helmet shell 1, and in this state, the chin guard rotator 2 blocks the lower half of the viewing window 11 to protect the user's chin and mouth; the protective visor assembly 4 covers the upper half of the viewing window 11 to protect the user's eyes. At this time, both the protective visor assembly 4 and the chin guard rotator 2 are located on the same side of the helmet shell 1. In the second state, the chin guard rotator 2 is located on the rear side of the helmet shell 1, and in this state, the chin guard rotator 2 does not obstruct the viewing window 11.

[0034] The adjustable chin guard helmet provided in this application will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 3As shown, the chin guard rotating body 2 includes a detachably connected chin guard frame 21 and a connecting plate 22. The chin guard frame 21 is U-shaped, and there are two connecting plates 22 located at opposite ends of the chin guard frame 21. The connecting plates 22 are disc-shaped and are rotatably mounted on the side of the helmet shell 1. Three through holes are provided at an eccentric position on the connecting plate 22, and three through holes are also provided on one side of the chin guard frame 21. The three through holes on the chin guard frame 21 and the connecting plate 22 are aligned and then connected and fixed by bolts. After fixing, the chin guard frame 21 and the connecting plate 22 rotate synchronously, and the axis of rotation is the axis of the connecting plate 22 itself.

[0036] like Figure 3 As shown, the helmet shell 1 has a travel groove 13, the trajectory of which is arc-shaped and the center of the arc is located on the rotation axis of the connecting plate 22. A travel slider 224 is integrally formed on the edge of the connecting plate 22. When the protective plate rotating body 2 rotates, the travel slider 224 slides within the travel groove 13. In the first and second states, the travel slider 224 contacts the two end walls of the travel groove 13, respectively. A positioning protrusion 131 is integrally formed on the wall of the travel groove 13, and a positioning groove 2241 is formed on the travel slider 224. When the protective plate rotating body 2 rotates to the second state, the positioning protrusion 131 is embedded in the positioning groove 2241, making it difficult for the protective plate rotating body 2 and the helmet shell 1 to rotate relative to each other, thus increasing the stability of their relative states.

[0037] like Figure 3 As shown, since the position of the stroke slider 224 within the stroke groove 13 corresponds to the angle of the chin guard 21 relative to the helmet shell 1, the through holes on the chin guard 21 and the through holes on the connecting plate 22 must have a unique one-to-one correspondence. The connecting plate 22 with three through holes has integrally formed mating protrusions 223 on its surface. The chin guard 21 has mating holes 211 for inserting the mating protrusions 223. During the assembly of the chin guard 21 and the connecting plate 22, if the mating protrusions 223 are inserted into the mating holes 211, it indicates that the installation angle of the chin guard 21 and the connecting plate 22 is correct. In this embodiment, there are two mating protrusions 223, one being a regular hexagonal block and the other a straight protrusion. The number and outline of the mating holes 211 correspond to the mating protrusions 223.

[0038] In one specific implementation, such as Figure 3 , 4As shown in Figure 5, a locking member 3 is provided on the helmet shell 1. The locking member 3 is used to keep the protective plate rotating body 2 and the helmet shell 1 fixed in the second state. The locking member 3 is a square thin plate, which is slidably disposed on the outer surface of the helmet shell 1 and located on one side of the connecting plate 22. The sliding direction of the locking member 3 is parallel to the outer surface of the helmet shell 1 and perpendicular to the axis of the connecting plate 22. A locking groove 221 is provided on the edge of the connecting plate 22, and the groove depth of the locking groove 221 is radial to the connecting plate 22. In the second state, the groove opening of the locking groove 221 is aligned with the locking member 3 and one end of the locking member 3 can slide into it. The opposite side walls of the locking member 3 sliding into the locking groove 221 contact and abut against the opposite side groove walls of the locking groove 221. When the protective plate rotating body 2 has a tendency to rotate, the locking member 3 forms an obstruction against the groove wall of the locking groove 221, thereby preventing the movement of the protective plate rotating body 2, and thus enabling the protective plate rotating body 2 to be stably maintained in the position of the second state. The locking member 3 has an integrally formed force-applying protrusion 31 on the side opposite to the helmet shell 1. The length direction of the force-applying protrusion 31 is perpendicular to the moving direction of the locking member 3. The force-applying protrusion 31 is used to facilitate the operator to apply force to the pushing operation of the locking member 3.

[0039] like Figure 4 and 5 As shown, the locking component 3 is made of plastic, such as PC. One side of the locking component 3 has an integrally formed elastic protrusion 32, and the helmet shell 1 has an integrally formed abutment protrusion 222. The abutment protrusion 222 and the elastic protrusion 32 abut against each other. During the process of one end of the locking component 3 entering or exiting the locking groove 221, the elastic protrusion 32 needs to pass through the abutment protrusion 222. The abutment between the two generates resistance, meaning that the locking component 3 needs to overcome this resistance to enter or exit the locking groove 221, which to a certain extent ensures that the locking component 3 will not easily move uncontrollably. The locking component 3 has a deformation slot 33 located on the side of the elastic protrusion 32 away from the abutment protrusion 222. The presence of the deformation slot 33 improves the elastic deformation capability of the elastic protrusion 32 when abutted, reducing the resistance when pushing the locking component 3.

[0040] The aforementioned adjustable chin guard helmet effectively solves the problem of low stability of the plate rotating body 2 in the second state. Since the moving direction of the locking part 3 is parallel to the outer surface of the helmet shell 1, the force perpendicular to the surface of the helmet shell 1 can not cause a change in the position of the locking part 3, nor will it affect the position of the plate rotating body 2 in the second state.

[0041] Based on the above embodiments, refer to Figure 2 and 6The protective goggle assembly 4 includes a mounting body 41 and a goggle plate 42 connected to each other. The goggle plate 42 is U-shaped. There are two mounting bodies 41, which are fixedly connected to the two ends of the goggle plate 42 respectively. The mounting body 41 and the helmet shell 1 are rotatably connected. When the goggle plate 42 is in the upper part of the window hole 11, the protective goggle assembly 4 can be pushed upward to flip it to the upper part of the helmet shell 1, thereby opening the upper part of the window hole 11.

[0042] like Figure 7 and 8 As shown, an arc-shaped boss 411 is integrally formed on one side of the mounting body 41. Both sides of the arc-shaped boss 411 are arc surfaces, and the two ends of the arc surfaces are connected by planes. An arc-shaped protrusion 23 is integrally formed on the connecting plate 22. The two sides of the arc-shaped protrusion 23 are two parallel arc surfaces, and one end of the outer arc surface of the arc-shaped protrusion 23 bends inward and extends to connect with one end of the other arc surface. The other ends of the two arc surfaces of the arc-shaped protrusion 23 are connected by planes. When the guard plate rotating body 2 rotates, the arc-shaped protrusion 23 can push the arc-shaped boss 411, so that the mounting body 41 and the guard plate rotating body 2 rotate synchronously.

[0043] like Figure 7 As shown in the figure, this is the relative position of the mounting body 41 and the connecting plate 22 in the first state, when the mirror plate 42 also blocks the upper part of the viewing window 11. The rotation center of the mounting body 41 is point O, and the rotation center of the connecting plate 22 is point O'. At this time, both the mirror plate 42 and the protective plate rotating body 2 are in their lowest positions, and the arc-shaped boss 411 is located below the arc-shaped protrusion 23. There is a certain distance between the arc-shaped boss 411 and the arc-shaped protrusion 23. When it is necessary to lift the protective plate rotating body 2, that is, when the arc-shaped protrusion 23 faces the attached... Figure 7 The lower edges of the protective plate rotating body 2 and the mirror plate 42 come into contact with each other as the protective plate rotating body 2 is lifted. During the process of lifting the protective plate rotating body 2, the mirror plate 42 is driven to move upward synchronously. The arc-shaped boss 411 rotates counterclockwise, and the mounting body 41 and the mirror plate 42 move simultaneously until the arc-shaped boss 411 and the arc-shaped protrusion 23 come into contact.

[0044] Because the rotation center of the mounting body 41 and the rotation center of the arc-shaped protrusion 23 do not coincide, the rotation speeds of the arc-shaped protrusion 411 and the arc-shaped protrusion 23 are inconsistent. The rotation speed of the arc-shaped protrusion 411 is greater than that of the arc-shaped protrusion 23, so there are moments when the arc-shaped protrusion 411 and the arc-shaped protrusion 23 come into contact with each other. When the arc-shaped protrusion 411 and the arc-shaped protrusion 23 abut against the arc-shaped protrusion 411, the arc-shaped protrusion 23 moves against the arc-shaped protrusion 411. At this time, the protective plate rotating body 2 and the mirror plate 42 are no longer in contact. The upward lifting of the mirror plate 42 is entirely achieved by the force of the arc-shaped protrusion 411 and the arc-shaped protrusion 23, until the arc-shaped protrusion 411 moves to the outside of the arc-shaped protrusion 23, the mirror plate 42 moves to the highest position, and the arc-shaped protrusion 23 slides relative to the arc-shaped protrusion 411, so that the protective plate rotating body 2 continues to lift relative to the mirror plate 42.

[0045] Since the contact surfaces of the arc-shaped boss 411 and the arc-shaped protrusion 23 are both arc surfaces, and there is an included angle between the contact surfaces of each boss, the outer arc surface of the arc-shaped protrusion 23 can push the inner arc surface of the arc-shaped boss 411 to rotate. However, the angle between the arc surface of the arc-shaped boss 411 and the arc surface of the arc-shaped protrusion 23 gradually decreases as the mounting body 41 rotates counterclockwise. When the included angle between the contact surfaces of the two bosses is reduced to 0°, the positional relationship between the contact surfaces of the two bosses is tangent. At this time, the contact surfaces of the two bosses only slide. At this time, the arc-shaped protrusion 23 cannot generate a thrust on the arc-shaped boss 411, and the arc-shaped boss 411 is stationary. If the guard plate rotating body 2 continues to rotate, only the arc-shaped protrusion 23 slides relative to the arc-shaped boss 411. After that, the arc-shaped protrusion 23 separates from the arc-shaped boss 411, so that after the mounting body 41 reaches the upper limit of rotation, the guard plate rotating body 2 can still continue to rotate until the guard plate rotating body 2 rotates to the rear side of the helmet shell 1.

[0046] like Figure 8 As shown in the figure, the positional relationship between the arc-shaped boss 411 and the arc-shaped protrusion 23 of the helmet in the second state is illustrated. At this time, the arc-shaped boss 411 of the mounting body 41 abuts against the flat end of the arc-shaped protrusion 23 of the protective plate rotating body 2. At this time, the visor plate 42 is in the lowest position and the protective plate rotating body 2 is in the last position. That is to say, when the helmet is worn, the visor plate 42 is located in front of the user's eyes, and the protective plate rotating body 2 is located behind the user's head. At this time, the arc-shaped boss 411 and the arc-shaped protrusion 23 abut against each other, and the arc-shaped protrusion 23 is farther away from the rotation center point O of the mounting body 41 than the arc-shaped boss 411.

[0047] By lowering the rotating body 2 of the protective plate, the arc-shaped protrusion 23 moves clockwise, and the arc-shaped protrusion 23 abuts against the arc-shaped boss 411, causing the arc-shaped boss 411 to move clockwise, so that the mirror plate 42 moves to the highest position, and the arc-shaped boss 411 moves to the outside of the arc-shaped protrusion 23, as shown in the instruction manual. Figure 9 As shown. Then, the arc-shaped protrusion 23 can continue to slide relative to the arc-shaped boss 411, that is, the arc-shaped protrusion 23 continues to rotate clockwise, while the arc-shaped boss 411 remains in its current position and cannot move. The protective plate rotating body 2 continues to move downward relative to the mirror plate 42.

[0048] like Figure 7 , 8As shown in Figure 9, the first end of the arc-shaped protrusion 23 has a pointed end 231, which is located on the inner edge of the arc-shaped protrusion 23. In the first state, the pointed end 231 faces the arc-shaped boss 411. When the pointed end 231 and the arc-shaped protrusion 23 come into contact, as the arc-shaped protrusion 23 rotates, the pointed end 231 guides the arc-shaped boss 411 to the outer edge of the arc-shaped protrusion 23. This arrangement ensures reliable contact between the arc-shaped protrusion 23 and the arc-shaped boss 411, and ensures that the pointed end 231 of the arc-shaped protrusion 23 can smoothly push the arc-shaped boss 411 to move. At the same time, based on the presence of the pointed end 231, the thrust of the pointed end 231 on the arc-shaped boss 411 can be effectively reduced, preventing the arc-shaped boss 411 from being crushed by the arc-shaped protrusion 23.

[0049] like Figure 7 , 8 As shown in Figure 9, the second end of the arc-shaped protrusion 23 is provided with a supporting end 232. In the second state, the arc center corresponding to the arc-shaped boss 411 is located on the side close to the arc-shaped protrusion 23. The supporting end 232 abuts against one side of the arc-shaped protrusion 23. By lowering the protective plate rotating body 2, the supporting end 232 pushes the arc-shaped protrusion 23 upward, causing the mirror plate 42 to move to the highest position. With this configuration, utilizing the curvature of the arc-shaped boss 411, under the pushing action of the supporting end 232 of the arc-shaped protrusion 23, the arc-shaped boss 411 can smoothly swing upward, that is, move clockwise, ensuring the lifting of the mirror plate 42 and the mounting body 41.

[0050] like Figure 6 As shown, magnets 5 are installed on both the mounting body 41 and the helmet shell 1. When the visor plate 42 covers the upper half of the viewing window 11, the distance between the magnets 5 on the mounting body 41 and the magnets 5 on the helmet shell 1 is 2-5mm. At this time, under the action of magnetic attraction, the two magnets 5 are not easy to move in opposite directions, and the relative stability of the protective goggle assembly 4 and the helmet shell 1 is relatively high. The stability of the visor plate 42 covering the upper half of the viewing window 11 is also relatively high. Both the mounting body 41 and the helmet shell 1 are provided with mounting holes 51 for inserting magnets 5. The axis of the mounting hole 51 is perpendicular to the rotation axis of the mounting body 41. The mounting hole 51 is a round hole, and the magnet 5 is cylindrical. The hole wall of the mounting hole 51 abuts against the side wall of the magnet 5. In actual use, the two can be further reinforced by adhesive or other methods.

[0051] The above provides a detailed description of an adjustable chin guard helmet provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A helmet with an adjustable chin guard, comprising a helmet shell (1) and a chin guard rotator (2), wherein a locking element (3) is provided on the helmet shell (1), and the chin guard rotator (2) is rotatably disposed on the helmet shell (1). The helmet is divided into two states according to the relative angle between the chin guard rotator (2) and the helmet shell (1). In the first state, the chin guard rotator (2) is located on the front side of the helmet shell (1), and in the second state, the chin guard rotator (2) is located on the rear side of the helmet shell (1). Its features are, The locking member (3) is slidably connected to the outer surface of the helmet shell (1). The sliding direction of the locking member (3) is parallel to the outer surface of the helmet shell (1). The protective plate rotating body (2) is provided with a locking groove (221). In the second state, the groove opening of the locking groove (221) is aligned with the locking member (3), so that the locking member (3) can slide into the locking groove (221) through the groove opening. The side wall of the locking member (3) that slides into the locking groove (221) abuts against the groove wall of the locking groove (221).

2. The adjustable chin guard helmet according to claim 1, characterized in that, The locking member (3) has an elastic protrusion (32) on its side. The helmet shell (1) is fixedly connected to an abutting protrusion (222). The abutting protrusion (222) and the elastic protrusion (32) abut against each other. During the process of the locking member (3) entering the locking groove (221), the elastic protrusion (32) passes through the abutting protrusion (222).

3. The adjustable chin guard helmet according to claim 2, characterized in that, The locking member (3) has a deformation hole (33) located on the side of the elastic protrusion (32) away from the abutting protrusion (222).

4. The adjustable chin guard helmet according to any one of claims 1-3, characterized in that, The locking member (3) has a force-applying protrusion (31) fixedly connected to the side away from the helmet shell (1), and the length direction of the force-applying protrusion (31) is perpendicular to the moving direction of the locking member (3).

5. The adjustable chin guard helmet according to any one of claims 1-3, characterized in that, The protective plate rotating body (2) includes a chin guard (21) and a connecting plate (22) that are detachably connected to each other. The connecting plate (22) is rotatably connected to the helmet shell (1), and the locking groove (221) is formed on the connecting plate (22).

6. The adjustable chin guard helmet according to claim 5, characterized in that, It also includes a protective goggle assembly (4), which includes a mounting body (41) and a goggle plate (42) connected to each other. The mounting body (41) is rotatably connected to the helmet shell (1). The mounting body (41) is provided with an arc-shaped boss (411), and the connecting plate (22) is provided with an arc-shaped protrusion (23). In the first state, the arc-shaped protrusion (411) is located below the arc-shaped protrusion (23). By lifting the protective plate rotating body (2), the protective plate rotating body (2) drives the mirror plate (42) to move synchronously. When the arc-shaped protrusion (411) and the arc-shaped protrusion (23) abut against the arc-shaped protrusion (411) until the arc-shaped protrusion (411) moves to the outside of the arc-shaped protrusion (23), the mirror plate (42) moves to the highest position, and the arc-shaped protrusion (23) slides relative to the arc-shaped protrusion (411), so that the protective plate rotating body (2) continues to lift relative to the mirror plate (42). In the second state, the arc-shaped boss (411) and the arc-shaped protrusion (23) abut against each other. The arc-shaped protrusion (23) is farther away from the rotation center of the mounting body (41) than the arc-shaped boss (411). By lowering the protective plate rotating body (2), the arc-shaped protrusion (23) abuts against the arc-shaped boss (411) and moves, causing the mirror plate (42) to move to the highest position. The arc-shaped boss (411) moves to the outside of the arc-shaped protrusion (23). The arc-shaped protrusion (23) slides relative to the arc-shaped boss (411), causing the protective plate rotating body (2) to continue to move downward relative to the mirror plate (42).

7. The adjustable chin guard helmet according to claim 6, characterized in that, The first end of the arc-shaped protrusion (23) is provided with a pointed end (231). The pointed end (231) is located on the inner edge of the arc-shaped protrusion (23). In the first state, the pointed end (231) faces the arc-shaped boss (411). When the pointed end (231) and the arc-shaped protrusion (23) abut against each other, as the arc-shaped protrusion (23) rotates, the pointed end (231) guides the arc-shaped boss (411) to the outer edge of the arc-shaped protrusion (23). Alternatively: The second end of the arc-shaped protrusion (23) is provided with a supporting end (232). In the second state, the arc center corresponding to the arc-shaped boss (411) is located on the side close to the arc-shaped protrusion (23). The supporting end (232) abuts against one side of the arc-shaped protrusion (23). By lowering the protective plate rotating body (2), the supporting end (232) pushes the arc-shaped protrusion (23) upward, so that the mirror plate (42) moves to the highest position.

8. The adjustable chin guard helmet according to claim 6, characterized in that, The helmet shell (1) is provided with a travel groove (13). The trajectory of the travel groove (13) is arc-shaped and the center of the arc is located on the rotation axis of the connecting plate (22). A travel slider (224) is fixedly connected to the connecting plate (22). The travel slider (224) is located in the travel groove (13). In the first state and the second state, the travel slider (224) is in contact with the two end walls of the travel groove (13). A positioning protrusion (131) is fixedly connected to the wall of the travel groove (13). A positioning groove (2241) is provided on the travel slider (224). In the second state, the positioning protrusion (131) is located in the positioning groove (2241).

9. The adjustable chin guard helmet according to claim 6, characterized in that, Both the mounting body (41) and the helmet shell (1) are provided with magnets (5). When the mirror plate (42) and the protective plate rotating body (2) in the first state are located on the same side of the helmet shell (1), the magnets (5) on the mounting body (41) and the magnets (5) on the helmet shell (1) attract each other.

10. The adjustable chin guard helmet according to claim 9, characterized in that, Both the mounting body (41) and the helmet shell (1) are provided with mounting holes (51) for inserting magnets (5), and the axis of the mounting holes (51) is perpendicular to the rotation axis of the mounting body (41).

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