Multifunctional protective helmet

Abstract

The invention discloses a multifunctional protective helmet which comprises a helmet shell, two mounting seat structures, a brim and a lens, the two sides of the brim are detachably locked to the upper ends of the two mounting seat structures respectively, and the lens is detachably mounted in the middles of the two mounting seat structures. Lens locking protruding blocks are fixed to the two ends of the inner side of each lens, each installation base structure comprises a sliding base, a brim locking key mechanism and a lens locking mechanism, the brim locking key mechanisms are installed at the upper ends of the sliding bases, and the lenses are detachably connected with the lens locking mechanisms of the installation base structures in a clamped mode through the lens locking protruding blocks on the two sides. The hat brim is detachably clamped to the hat brim locking key mechanisms of the two mounting base structures through hat brim inserting blocks on the two sides so that the hat brim can be detachably connected with the two mounting base structures in a locked mode. According to the multifunctional protective helmet designed by the invention, the brim can be quickly locked and disassembled, and the lens is convenient to replace and maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of helmets, in particular to a protective helmet. Background Art

[0002] A helmet is a head protection device used by drivers when riding. The main purpose of a helmet is to protect the driver's head when it is impacted, prevent or reduce injuries, and even save the rider's life.

[0003] The existing helmet structure mainly consists of a helmet shell, a protective mask, a brim, and fixing bolts. The protective mask is fixed to both sides of the helmet shell, and the brim is fixed to the forehead of the helmet shell by fixing bolts. The existing helmet structure has the following deficiencies during use:

[0004] 1) The brim of the helmet is fastened to the helmet shell by fixing bolts, which makes the brim an inconvenient component of the helmet shell. When the brim needs to be replaced, it needs to be removed with a tool. It is troublesome to remove the brim with a tool, and the operation is very troublesome. Improper operation may also break the brim, which will cause serious damage to the helmet, resulting in the helmet being scrapped, resulting in a high damage rate of the helmet, and increasing the investment in the cost of the helmet. In addition, the use of tools for removal is very inconvenient for users to operate, and it is more labor-intensive for users to remove and install the brim.

[0005] 2) The existing protective mask can only be firmly fixed on both sides of the helmet shell, which is very inconvenient to disassemble, replace and repair the protective mask, affecting the user's comfort when wearing the helmet and reducing the practicality of the helmet; Summary of the invention

[0006] In view of the shortcomings of the prior art such as high production cost of the helmets used, the technical problem to be solved by the present invention is to provide a brim lock key mechanism in which brim plugs on both sides of the brim can be detachably connected to two sets of mounting seat structures, so as to realize quick locking and disassembly of the brim, and no tools are required for disassembly and assembly, thereby avoiding damage to the protective helmet. The lens locking protrusion cooperates with the lens locking mechanism to realize quick installation and disassembly of the lens and the helmet shell, facilitate lens replacement and maintenance, and has a simple structure, is easy to use and reliable, and has rich functions. Multifunctional protective helmet.

[0007] In order to solve the above technical problems, the present invention provides a multifunctional protective helmet, which comprises a helmet shell, two sets of mounting seat structures, a brim, and a lens. The two sides of the bottom end of the helmet shell are formed with base fixing grooves matched with the mounting seat structures. The two sets of mounting seat structures are respectively installed at the base fixing grooves on both sides of the helmet shell. The two sides of the brim are respectively detachably locked to the upper ends of the two sets of mounting seat structures. The lenses are detachably installed in the middle of the two sets of mounting seat structures.

[0008] The lower end of the brim is provided with two groups of brim inserts, and the two groups of brim inserts are respectively fixed to the two sides of the lower end of the brim to form an integrated structure;

[0009] Both ends of the inner side of the lens are fixed with lens locking protrusions;

[0010] Each set of mounting seat structures includes a sliding base, a brim locking key mechanism, and a lens locking mechanism. The brim locking key mechanism is installed at the upper end of the sliding base, and the lens locking mechanism is installed in the middle of the sliding base and is located below the brim locking key mechanism. The lens is detachably connected to the lens locking mechanism of the mounting seat structure through the lens locking protrusions on both sides to achieve locking and unlocking of the lens by the lens locking mechanism. The brim is detachably connected to the brim locking key mechanisms of the two sets of mounting seat structures through the brim inserts on both sides to achieve a detachable locking connection between the brim and the two sets of mounting seat structures.

[0011] As a further improvement of the above solution, a lock key slide groove cooperating with the brim lock key mechanism is formed at the inner upper end of the sliding base, and the brim lock key mechanism is installed at the lock key slide groove on the inner side of the sliding base.

[0012] As a further improvement of the above solution, a plug-in groove is formed on the outer side of the sliding base to facilitate the detachable and locking connection between the brim and the brim locking mechanism.

[0013] As a further improvement of the above scheme, the brim lock key mechanism comprises a brim pull lock key, a brim lock handle, and a lock key elastic element, the brim lock handle is located at the outer side of one end of the brim pull lock key and is fixed to the brim pull lock key to form an integrated structure, the lock key elastic element is located at the inner side of the brim pull lock key, and the other end of the lock key elastic element is connected to the fixed seat of the sliding base.

[0014] As a further improvement of the above solution, the brim pulling lock key of the brim lock key mechanism is fixed with a brim locking block, and the brim insert blocks on both sides of the brim are provided with brim slots matching the brim locking blocks.

[0015] As a further improvement of the above scheme, a partition plate and a fixed cavity matching the shape of the lens locking mechanism are provided in the middle of the sliding base. The partition plate is located on one side of the fixed cavity and is fixed to the sliding base into an integrated structure. The lens locking mechanism is installed in the fixed cavity in the middle of the sliding base.

[0016] As a further improvement of the above scheme, the lens locking mechanism includes a locking block sliding base, a lens locking block, and a lens unlocking pressure block. The lens unlocking pressure block is located at the end of the locking block sliding base and is fixed as a whole with the locking block sliding base. The lens locking block is installed above the fixed base. A fixing part is fixed to the front end of the locking block sliding base. A locking buckle that cooperates with the lens locking protrusion is fixed to the upper end surface of the locking block sliding base. The locking buckle is located on one side of the lens unlocking pressure block.

[0017] As a further improvement of the above scheme, two symmetrically distributed locking block slots are provided on both sides of the locking block sliding base, and two hooks matching the locking block slots of the locking block sliding base are fixed to the bottom of one end of the lens locking block. The lens locking block hooks the two locking block slots of the locking block sliding base through the two hooks at the lower end to realize the installation of the lens locking block and the locking block sliding base.

[0018] As a further improvement of the above scheme, two groups of sliding limit grooves are provided on both sides of the middle part of the sliding base, and the two groups of sliding limit grooves are distributed on the upper and lower sides of the fixed cavity. Sliding blocks matching the sliding limit grooves are fixed on both sides of the bottom end of the lens locking block of the lens locking mechanism.

[0019] As a further improvement of the above solution, the lens locking mechanism includes a locking block elastic member, one end of which is connected to the fixed portion of the locking block sliding base, and the other end of which is connected to one end of the partition plate of the sliding base.

[0020] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects:

[0021] 1) The multifunctional protective helmet of the present invention comprises a helmet shell, two groups of mounting seat structures, a brim and a lens. The two groups of mounting seat structures are respectively mounted at the base fixing grooves on both sides of the helmet shell. The two sides of the brim are respectively detachably locked to the upper ends of the two groups of mounting seat structures. The lenses are detachably mounted in the middle of the two groups of mounting seat structures. Both ends of the inner sides of the lenses are fixed with lens locking protrusions. Each group of mounting seat structures comprises a sliding base, a brim locking key mechanism and a lens locking mechanism. The brim locking key mechanism is mounted at the upper end of the sliding base. The lens locking mechanism is mounted in the middle of the sliding base and is located below the brim locking key mechanism. The lens is detachably connected to the lens locking mechanism of the mounting seat structure through the lens locking protrusions on both sides to realize the locking and unlocking of the lens by the lens locking mechanism. The brim is detachably connected to the brim locking key mechanism of the two groups of mounting seat structures through the brim plug blocks on both sides to realize the detachable locking connection between the brim and the two groups of mounting seat structures. The multifunctional protective helmet designed by the present invention can realize the rapid locking and disassembly of the brim, and no tools are needed for disassembly and assembly, thereby avoiding damage to the brim. The lens locking protrusion cooperates with the lens locking mechanism to realize the rapid installation and disassembly of the lens and the helmet shell, which is convenient for lens replacement and maintenance. The structure is simple, and the use is convenient and reliable.

[0022] 2) The present invention provides two sets of sliding limit grooves on both sides of the middle of the sliding base, and the two sets of sliding limit grooves are distributed on the upper and lower sides of the fixed cavity, and sliding blocks that match the sliding limit grooves are fixed on both sides of the bottom end of the lens locking block of the lens locking mechanism. The sliding limit grooves provided on the sliding base can make the lens locking block slide more stably along the upper and lower sides of the sliding base, and also play a limiting role in the sliding of the lens locking block, so that the lens locking block will not shake in the vertical direction.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following is a detailed description in combination with the preferred embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic structural diagram of the multifunctional protective helmet of the present invention;

[0026] Figure 2A schematic diagram of the connection between the helmet shell, the mounting seat structure, and the brim of the helmet of the present invention;

[0027] Figure 3 It is a schematic diagram of another angle of connection between the helmet shell, the mounting seat structure, and the brim of the present invention;

[0028] Figure 4 It is a schematic structural diagram of the helmet shell of the present invention;

[0029] Figure 5 A schematic diagram of the connection between the mounting base structure and the brim of a hat of the present invention;

[0030] Figure 6 An exploded view of the mounting base structure and the brim of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the brim of the hat of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the mounting seat structure of the present invention;

[0033] Fig. 9 It is a structural exploded view of the mounting seat structure of the present invention;

[0034] Fig.10 A schematic diagram of the connection between the sliding base and the brim lock mechanism of the present invention;

[0035] Fig.11 It is a schematic diagram of another angle of connection between the sliding base and the brim lock mechanism of the present invention;

[0036] Fig.12 It is a structural exploded view of the sliding base and the brim lock mechanism of the present invention;

[0037] Fig.13 It is a structural exploded view of the sliding base and the brim lock mechanism of the present invention from another angle;

[0038] Fig.14 It is a schematic diagram of a state in which the brim of the present invention is locked with the brim pulling lock key;

[0039] Fig.15 It is a structural diagram of the connection between the sliding base and the lens locking mechanism of the present invention;

[0040] Fig.16 It is a structural exploded view of the sliding base and the lens locking mechanism of the present invention;

[0041] Fig.17 The structural decomposition of the lens locking mechanism of the present invention Figure 1 ;

[0042] Fig.18 The structural decomposition of the lens locking mechanism of the present invention Figure 2 .

[0043] In the figure, the helmet shell 1, the base fixing groove 11, the observation port 12, the first positioning hole 13, the second positioning hole 14, the mounting seat structure 2, the sliding base 21, the lock key slide groove 211, the plug slot 212, the fixing seat 213, the lock handle slide groove 214, the partition plate 215, the elastic fixing groove 2151, the gear rotation part 2152, the fixing cavity 216, the sliding limit groove 217, the hinge shaft 218, the brim lock key mechanism 22, the brim pull lock key 221, the brim lock handle 222, the lock key elastic element 223, the brim lock Tightening block 224, rotating hole 225, lens locking mechanism 23, locking block sliding base 231, fixing part 2311, locking block slot 2312, fixing hole 2313, lens locking block 232, hook 2321, sliding block 2322, connecting hole 2323, lens unlocking pressure block 233, locking buckle 234, brim 3, brim insert block 31, brim slot 32, first brim fixing part 33, second brim fixing part 34, first connecting hole 35, second connecting hole 36, lens 4, lens locking protrusion 41. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figure 1-Figure 9As shown, a multifunctional protective helmet is provided in the first embodiment of the present invention. The multifunctional protective helmet comprises a helmet shell 1, two sets of mounting seat structures 2, a brim 3, and a lens 4. The two sides of the bottom end of the helmet shell 1 are formed with base fixing grooves 11 matched with the mounting seat structures 2. The two sets of mounting seat structures 2 are respectively installed at the base fixing grooves 11 on both sides of the helmet shell 1. The two sides of the brim 3 are respectively detachably locked to the upper ends of the two sets of mounting seat structures 2. The lens 4 is detachably installed in the middle of the two sets of mounting seat structures 2. The brim 3 is also located at the forehead of the helmet shell 1. The lens 4 is detachably installed in the middle of the two sets of mounting seat structures 2. 4 is located below the brim 3, and two groups of brim inserts 31 are provided at the lower end of the brim 3. The two groups of brim inserts 31 are respectively fixed to the two sides of the lower end of the brim 3 to form an integrated structure. Both ends of the inner side of the lens 4 are fixed with lens locking protrusions 41. In specific implementation, an observation port 12 is opened at the front end of the helmet shell 1, and the lens 4 is detachably mounted on the middle part of the two groups of mounting seat structures 2 so that the lens 4 covers the observation port 12 of the helmet shell 1. The present invention sets the lens locking protrusion 41 to be semicircular, and the design of the semicircular shape is to increase the force-bearing area of ​​the lens locking protrusion 41. In this embodiment, each set of mounting seat structures 2 includes a sliding base 21, a brim locking key mechanism 22, and a lens locking mechanism 23. The brim locking key mechanism 22 is installed at the upper end of the sliding base 21, and the lens locking mechanism 23 is installed in the middle of the sliding base 21 and is located below the brim locking key mechanism 22. The lens 4 is detachably connected to the lens locking mechanism 23 of the mounting seat structure 2 through the lens locking protrusions 41 on both sides to achieve locking and unlocking of the lens 4 by the lens locking mechanism 23. The brim 3 is detachably connected to the brim locking key mechanisms 22 of the two sets of mounting seat structures 2 through the brim plug blocks 31 on both sides to achieve a detachable locking connection between the brim 3 and the two sets of mounting seat structures 2. The present invention provides a brim lock key mechanism 22 on the mounting seat structure 2, which is convenient for the brim plug blocks 31 on both sides of the brim 3 to be detachably connected with the brim lock key mechanisms 22 of the two sets of mounting seat structures 2, so as to realize the rapid locking and disassembly of the brim 3, and the brim 3 and the helmet shell 1 can be quickly locked and disassembled without using tools for disassembly and assembly, thereby improving the convenience of the driver in disassembling and installing the brim 3, avoiding the situation that the brim 3 is broken during the process of disassembling the brim 3 using tools, avoiding damage to the protective helmet, not only reducing the damage rate of the protective helmet, but also reducing the property loss of the protective helmet, and improving the convenience of wearing the protective helmet. The entire brim 3 locking and disassembly operation process is very simple, reducing the difficulty of locking and disassembling the brim 3, and the driver does not need to spend energy and cost to learn, which is convenient for the driver to disassemble the brim 3, and convenient to repair or replace the brim 3. The lens locking protrusion 41 cooperates with the lens locking mechanism 23, so that the lens 4 and the helmet shell 1 can be quickly installed and disassembled, which is very convenient for replacing and repairing the lens 4. The multifunctional protective helmet designed by the present invention has a simple structure, which improves the convenience and practicality of the driver.

[0046] The present invention is provided with a lock key slide groove 211 matched with the brim lock key mechanism 22 at the inner upper end of the sliding base 21, and the brim lock key mechanism 22 is installed at the lock key slide groove 211 on the inner side of the sliding base 21. The outer side of the sliding base 21 is formed with a plug-in groove 212 for detachable locking connection between the brim 3 and the brim lock key mechanism 22. In specific implementation, the lock handle slide groove 214 of the sliding base 21 and the plug-in groove 212 are distributed on the sliding base 21 at intervals. The brim plugs 31 on both sides of the brim 3 are detachably inserted into the brim lock key mechanism 22 on the sliding base 21 through the plug-in groove 212, so as to realize the rapid disassembly and locking connection between the brim 3 and the brim lock key mechanism 22.

[0047] like Figure 10-Figure 14 As shown, when the embodiment of the present invention is specifically implemented, the brim lock key mechanism 22 includes a brim pull lock key 221, a brim lock handle 222, and a lock key elastic element 223. The brim lock handle 222 is located on the outer side of one end of the brim pull lock key 221 and is fixed to the brim pull lock key 221 to form an integrated structure. The lock key elastic element 223 is located on the inner side of the brim pull lock key 221. The other end of the brim pull lock key 221 is formed with a rotating hole 225. The inner side of the sliding base 21 is provided with a fixing seat 213 and a hinge shaft 218. The hinge shaft 218 is located on the inner side of the sliding base 21. The sliding base 21 is fixed on one side of the fixing seat 213 and in the lock key slot 211; the outer side of the sliding base 21 is also provided with a lock handle slot 214 for facilitating the pulling of the brim lock handle 222, and the fixing seat 213 is fixed at the lower end of the lock key slot 211; the brim pull lock key 221 is hinged to the lock key slot 211 on the inner side of the sliding base 21 through a rotating hole 225 and a hinge shaft 218, one end of the lock key elastic element 223 is connected to the brim pull lock key 221, and the other end of the lock key elastic element 223 is connected to the fixing seat 213 of the sliding base 21. The brim pull lock key 221 is also fixed with a brim locking block 224, and the brim inserts 31 on both sides of the brim 3 are provided with brim slots 32 that match the brim locking block 224. After the brim inserts 31 on the left and right sides of the brim 3 are inserted into the brim pull lock key 221 through the insertion slot 212, the brim locking clamp 224 on the brim pull lock key 221 is clamped with the brim clamping slot 32 of the brim insert 31, thereby locking the brim 3. The lock key elastic element 223 of the present invention can be a spring.

[0048] Regarding the locking connection process between the brim 3 and the mounting seat structure 2 at the bottom of the helmet shell 1:

[0049] The brim inserts 31 on both sides of the brim 3 are inserted into the brim locking block 224 close to the brim pull lock key 221 through the plug-in groove 212, and the brim locking block 224 on the brim pull lock key 221 and the brim slot 32 of the brim insert 31 are mutually clamped, thereby realizing the locking of the brim 3 and the brim pull lock key 221, and then realizing the locking of the brim 3 and the bottom end mounting seat structure 2 of the helmet shell 1, so as to achieve the purpose of quickly locking the brim 3.

[0050] Regarding the disassembly and unlocking process of the brim 3 and the mounting seat structure 2 at the bottom of the helmet shell 1:

[0051] Pulling the brim lock handle 222 downward causes the brim pull lock key 221 to squeeze the lock key elastic element 223 downward, and the lock key elastic element 223 will undergo elastic deformation. The brim pull lock key 221 uses the hinge shaft 218 as an axis of relative rotation, so that the brim pull lock key 221 rotates downward relative to the hinge shaft 218, thereby causing the brim pull lock key 221 to slide downward along the lock key slot 211 and pull the brim 3 toward the front of the helmet shell 1 at the same time. The brim insert blocks 31 on both sides of the brim 3 can be disengaged from the locking position of the brim locking block 224, thereby achieving the purpose of quickly unlocking and disassembling the brim 3. The present invention only requires pulling the brim lock handle 222 and pulling the brim 3 to quickly unlock the brim 3 from the helmet body. The operation is very simple and there is no need to spend energy to disassemble the brim 3.

[0052] The brim lock key mechanism 22 and the sliding base 21 of the present invention are locked together by the brim locking block 224 on the brim pull lock key 221 and the brim slot 32 of the brim insert block 31, so that the brim 3 and the brim pull lock key 221 can be locked; by pulling the brim lock handle 222 and moving the brim 3 toward the front of the helmet shell 1, the brim 3 is separated from the locking position of the brim pull lock key 221, and the brim 3 can be quickly unlocked and disassembled by the brim pull lock key 221. The brim lock key mechanism 22 has a simple structural design, which is very convenient for the driver to remove the brim 3 from the helmet shell 1, facilitates the replacement and maintenance of the brim 3, and improves the practicality of the multi-functional protective helmet.

[0053] When the present invention is implemented, the upper ends of the brim 3 are extended upward to form a first brim fixing portion 33 and a second brim fixing portion 34, respectively. The first brim fixing portion 33 and the second brim fixing portion 34 are symmetrically distributed at the upper ends of the brim and are fixedly connected to the brim 3 as a whole. The first brim fixing portion 33 is provided with a first connecting hole 35, and the second brim fixing portion 34 is provided with a second connecting hole 36. A first positioning hole 13 and a second positioning hole 14 are provided on the top of the helmet shell 1. A first fixing column matching the first connecting hole 35 is fixed on the first positioning hole 13, and a first fixing column matching the first connecting hole 35 is fixed on the second positioning hole 14. There is a second fixing column that matches the second connecting hole 36. The first connecting hole 35 of the first brim fixing part 33 at the upper end of the brim 3 will be snapped into the first fixing column on the first positioning hole 13 at the top of the helmet shell 1. The second connecting hole 36 of the second brim fixing part 34 at the top of the brim 3 will be snapped into the second fixing column on the second positioning hole 14 at the top of the helmet shell 1. The brim 3 can form a four-point fixation of the brim 3 through the brim plug blocks 31 on both sides, the first connecting hole 35 of the first brim fixing part 33, and the second connecting hole 36 of the second brim fixing part 34, thereby improving the stability of the fixation of the brim 3.

[0054] like Figure 15-18 As shown, when the present invention is specifically implemented, a partition plate 215 and a fixed cavity 216 matching the shape of the lens locking mechanism 23 are provided in the middle of the sliding base 21. The partition plate 215 is located at one side of the fixed cavity 216 and is fixed to the sliding base 21 to form an integrated structure. The lens locking mechanism 23 is installed at the fixed cavity 216 in the middle of the sliding base 21. The lens locking mechanism 23 includes a locking block sliding base 231, a lens locking block 232, and a lens unlocking pressing block 233. The lens unlocking pressing block 233 is located at the end of the locking block sliding base 231 and is fixed to the locking block sliding base 231 to form an integrated structure. The lens locking block 232 is installed above the fixed base. A fixing portion 2311 is fixed to the front end of the locking block sliding base 231. A locking buckle 234 matching the lens locking protrusion 41 is fixed to the upper end surface of the locking block sliding base 231. The locking buckle 234 is located at one side of the lens unlocking pressing block 233. The lens locking mechanism 23 can lock and release the lens locking protrusion 41 of the lens 4 by cooperating with the locking buckle 234 of the locking block sliding base 231 and the lens locking block 232. The lens locking block 232 and the locking buckle 234 cooperate to nest the lens locking protrusion 41 into the locking buckle 234 in the locking block sliding base 231 to lock the lens 4.

[0055] In the embodiment of the present invention, the lens unlocking pressure block 233 can be designed as an arc-shaped protrusion structure slightly higher than the plane where the locking block sliding base 231 is located, and the locking buckle 234 can be designed as an arc-shaped structure. The arc-shaped structure is mainly designed to match the shape of the locking buckle 234 and the lens locking protrusion 41, so that the locking buckle 234 and the lens locking protrusion 41 can be better locked together, and loosening between the lens locking protrusion 41 and the locking buckle 234 can be prevented.

[0056] In specific implementation, the present invention is provided with two symmetrically distributed locking block slots 2312 on both sides of the locking block sliding base 231, and two hooks 2321 matching with the locking block slots 2312 of the locking block sliding base 231 are fixed at the bottom of one end of the lens locking block 232. The lens locking block 232 hooks the two locking block slots 2312 of the locking block sliding base 231 through the two hooks 2321 at the bottom of one end to achieve the installation of the lens locking block 232 and the locking block sliding base 231. The entire lens locking block 232 is fixed to the fixed base by the two hooks 2321 and the two locking block slots 2312 to prevent the lens locking block 232 from warping outwards. The hooks 2321 can also prevent the lens locking block 232 from moving up or down, thereby improving the stability and firmness of the fixing of the lens locking block 232. In a specific implementation, the present invention designs the lens locking block 232 into a U-shaped structure, and two connecting holes 2323 are provided at the other end of the lens locking block 232, and two fixing holes 2313 are provided on the locking block sliding base 231. The two fixing holes 2313 are provided with fixing pieces that match the fixing holes 2313 and the connecting holes 2323. The two hooks 2321 at the bottom of one end of the lens locking block 232 hook the two locking block slots 2312 of the locking block sliding base 231, and the two connecting holes 2323 at the other end of the lens locking block 232 are respectively aligned with the two fixing holes 2313 of the locking block sliding base 231, so that the fixing pieces pass through the connecting holes 2323 and the fixing holes 2313 to install the lens locking block 232 on the locking block sliding base 231. In a specific implementation, the fixing piece uses a cross-recessed flat-head self-tapping screw. The two fixing pieces can prevent the lens locking block 232 from being severely deformed, thereby playing the role of a protective device. The lens locking block 232 is designed as a U-shaped structure mainly to facilitate the locking of the lens locking protrusion 41 and the locking block sliding base 231, thereby playing a role in better locking the lens 4.

[0057] When the embodiment of the present invention is implemented, two groups of sliding limit grooves 217 are provided on both sides of the middle of the sliding base 21, and the two groups of sliding limit grooves 217 are distributed on the upper and lower sides of the fixed cavity 216. The bottom ends of the lens locking block 232 of the lens locking mechanism 23 are fixed with sliding blocks 2322 that match the sliding limit grooves 217. The locking block sliding base 231 can slide along the sliding limit grooves 217 installed on the sliding base 21 through the sliding limit grooves 217 on both sides of the bottom end. The sliding limit grooves 217 provided on the sliding base 21 can make the lens locking block 232 slide along the upper and lower sides of the sliding base 21 more stably, and also play a limiting role in the sliding of the lens locking block 232, so that the lens locking block 232 will not shake in the vertical direction.

[0058] The lens locking mechanism 23 of the present invention includes a locking block elastic member, one end of which is connected to the fixed portion 2311 of the locking block sliding base 231, and the other end of which is connected to one end of the partition plate 215 of the sliding base 21. In specific implementation, the locking block elastic member of the present invention is a spring, and the fixed portion 2311 of the locking block sliding base 231 is set to be U-shaped, so that the locking block sliding base 231 is connected to the locking block elastic member through the fixed portion 2311, and the locking block elastic member is elastically deformed by squeezing the locking block elastic member, so that the lens locking block 232 on the locking block sliding base 231 can move left and right on the sliding base 21 through the locking block elastic member.

[0059] In a specific implementation, an elastic fixing groove 2151 is provided at one end of the partition plate 215, and a plurality of gear rotating parts 2152 are formed at the other end of the partition plate 215. The present invention has gear toggle blocks fixed on the inner walls on both sides of the lens 4. When the lens 4 is locked, the gear toggle block will rotate along the plurality of gear rotating parts 2152 at the other end of the partition plate 215 to form a plurality of gears. Through these plurality of gears, the lens 4 is placed in different opening states, so as to facilitate the opening and closing of the lens 4.

[0060] The specific operation process of unlocking the lens 4 of the present invention is as follows:

[0061] By rotating the lens 4 upward and pressing down the lens unlocking pressing block 233, the locking buckle 234 on the locking block sliding base 231 will move downward, and then the lens 4 is pulled toward the observation port 12 of the helmet body, so that the lens locking protrusion 41 can be disengaged from the locking position of the locking buckle 234 on the locking block sliding base 231, thereby realizing the removal of the lens 4.

[0062] The specific operation process of locking the lens 4 of the present invention is as follows:

[0063] The lens 4 is rotated upwards, and the lens locking protrusion 41 of the unlocked lens 4 is pushed to the locking buckle 234 of the locking block sliding base 231 , and the lens locking protrusion 41 of the lens 4 is clamped by the locking buckle 234 , thereby realizing the locking of the lens 4 by the lens locking mechanism 23 .

[0064] The present invention can hook the lens locking protrusion 41 through the locking buckle 234 of the locking block sliding base 231, so that the lens locking mechanism 23 can lock the lens 4 to achieve locking. The lens locking mechanism 23 designed by the present invention can lock the lens 4 without applying force, which is very convenient for locking the lens 4 and is simple to operate; pressing the lens 4 downward to unlock the pressure causes the locking buckle 234 on the locking block sliding base 231 to move downward, so that the lens locking protrusion 41 can be separated from the locking position of the locking buckle 234 to achieve unlocking of the lens 4, and then pulling the lens 4 outward can make the lens locking protrusion 41 completely separate from the position of the sliding lock groove assembly to achieve disassembly of the lens 4. The entire locking, unlocking and disassembly process of the lens 4 does not require the driver's energy, which is very convenient for the driver's operation, and can quickly achieve locking and unlocking of the lens 4, reducing the time for the driver to lock, unlock and disassemble the lens 4, greatly reducing the difficulty coefficient of locking and unlocking the lens 4, and the driver does not need to spend too much time and energy on unlocking and locking.

[0065] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A multifunctional protective helmet, characterized in that: The multifunctional protective helmet comprises a helmet shell, two sets of mounting seat structures, a brim, and lenses. The two sides of the bottom end of the helmet shell are formed with base fixing grooves that match the mounting seat structures. The two sets of mounting seat structures are respectively installed at the base fixing grooves on both sides of the helmet shell. The two sides of the brim are respectively detachably locked to the upper ends of the two sets of mounting seat structures. The lenses are detachably installed in the middle of the two sets of mounting seat structures. The lower end of the brim is provided with two groups of brim inserts, and the two groups of brim inserts are respectively fixed to the two sides of the lower end of the brim to form an integrated structure; Both ends of the inner side of the lens are fixed with lens locking protrusions; Each set of mounting seat structures includes a sliding base, a brim locking key mechanism, and a lens locking mechanism. The brim locking key mechanism is installed at the upper end of the sliding base, and the lens locking mechanism is installed in the middle of the sliding base and is located below the brim locking key mechanism. The lens is detachably connected to the lens locking mechanism of the mounting seat structure through the lens locking protrusions on both sides to achieve locking and unlocking of the lens by the lens locking mechanism. The brim is detachably connected to the brim locking key mechanisms of the two sets of mounting seat structures through the brim inserts on both sides to achieve a detachable locking connection between the brim and the two sets of mounting seat structures.

2. The multifunctional protective helmet according to claim 1, characterized in that: The upper inner end of the sliding base is formed with a lock key sliding groove matched with the brim lock key mechanism, and the brim lock key mechanism is installed at the lock key sliding groove on the inner side of the sliding base.

3. The multifunctional protective helmet according to claim 1, characterized in that: The outer side of the sliding base is formed with a plug-in groove for detachably locking the brim and the brim locking mechanism.

4. The multifunctional protective helmet according to claim 3, characterized in that: The brim lock key mechanism comprises a brim pull lock key, a brim lock handle, and a lock key elastic element, the brim lock handle is located at the outer side of one end of the brim pull lock key and is fixed to the brim pull lock key to form an integrated structure, the lock key elastic element is located at the inner side of the brim pull lock key, and the other end of the lock key elastic element is connected to the fixed seat of the sliding base.

5. The multifunctional protective helmet according to claim 4, characterized in that: The brim pulling lock key of the brim lock key mechanism is fixed with a brim locking block, and the brim inserting blocks on both sides of the brim are provided with brim locking grooves matched with the brim locking blocks.

6. The multifunctional protective helmet according to claim 1, characterized in that: A partition plate and a fixed cavity matching the shape of the lens locking mechanism are provided in the middle of the sliding base. The partition plate is located on one side of the fixed cavity and is fixed to the sliding base into an integrated structure. The lens locking mechanism is installed in the fixed cavity in the middle of the sliding base.

7. The multifunctional protective helmet according to claim 6, characterized in that: The lens locking mechanism includes a locking block sliding base, a lens locking block, and a lens unlocking pressure block. The lens unlocking pressure block is located at the end of the locking block sliding base and is fixed to the locking block sliding base as a whole. The lens locking block is installed above the fixed base. A fixing part is fixed to the front end of the locking block sliding base. A locking buckle that cooperates with the lens locking protrusion is fixed to the upper end surface of the locking block sliding base. The locking buckle is located on one side of the lens unlocking pressure block.

8. The multifunctional protective helmet according to claim 7, characterized in that: Two symmetrically distributed locking block slots are provided on both sides of the locking block sliding base, and two hooks matching the locking block slots of the locking block sliding base are fixed to the bottom of one end of the lens locking block. The lens locking block hooks the two locking block slots of the locking block sliding base through the two hooks at the lower end to realize the installation of the lens locking block and the locking block sliding base.

9. The multifunctional protective helmet according to claim 6, characterized in that: Two groups of sliding limit grooves are arranged on both sides of the middle part of the sliding base, and the two groups of sliding limit grooves are distributed on the upper and lower sides of the fixed cavity. Sliding blocks matching with the sliding limit grooves are fixed on both sides of the bottom end of the lens locking block of the lens locking mechanism.

10. The multifunctional protective helmet according to claim 7, characterized in that: The lens locking mechanism comprises a locking block elastic member, one end of which is connected to a fixed portion of a locking block sliding base, and the other end of which is connected to one end of a partition plate of the sliding base.

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