Helmet jaw opening and closing mechanism and helmet

Abstract

The invention discloses a helmet jaw opening and closing mechanism and a helmet, belongs to the field of head protectors, and is used for solving the problem of how to ensure the stability of the jaw state and improve the operation convenience, and the helmet jaw opening and closing mechanism and the helmet comprise a jaw, an action line, a switch push button, a clamping hook support, a clamping hook, a fixing cover and a spring. The switch push button is movably arranged on the jaw, the clamping hook support is fixed to the jaw, the clamping hook is arranged on the clamping hook support in a sliding mode and provided with a tenon, the spring is arranged between the clamping hook and the clamping hook support, and the fixing cover is provided with at least two grooves. And the action line is connected with the switch push button and is connected with the clamping hook. When the jaw is in a closed state, the tenon is clamped in the groove under the action of the elastic force of the spring, so that the jaw and the helmet main body are relatively fixed; when the switch push button pushes the action line, the action line pulls the clamping hook in the direction away from the fixed cover, so that the tenon is separated from the groove, and the jaw and the helmet body can rotate relatively.

Description

Technical Field

[0001] The present application relates to the field of head protection gear, and in particular to a helmet chin opening and closing mechanism and a helmet. Background Art

[0002] Helmets are head protectors, especially those used by motorcycle and electric bicycle riders. Beyond safety, they are versatile and versatile, making them a common requirement. Flip-up helmets have emerged as a result: Flipping up the chin bar creates a 3 / 4 helmet, exposing the mouth for air, smoking, or drinking; lowering the chin bar creates a full-face helmet, providing all-around head protection while also keeping out the wind and warmth. A convenient and reliable chin bar and hook assembly ensures that flip-up helmets offer both safety and ease of assembly.

[0003] Traditional helmet chin opening and closing mechanisms usually adopt a relatively simple mechanical structure. For example, some helmets may use a single buckle structure, and the chin is opened and closed by manually operating the buckle directly. However, this structure has many disadvantages. On the one hand, the operation is not convenient enough, and the user may need to spend a lot of effort to unlock or buckle the buckle. Especially in some scenarios where the helmet needs to be put on or taken off quickly, the traditional structure cannot meet the needs of fast operation. On the other hand, the fixing effect of the chin in the closed state is not stable enough. After being impacted by external force or used for a long time, the buckle is easy to loosen, resulting in an unreliable connection between the helmet chin and the helmet body, posing a safety hazard.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the Invention

[0005] (1) Technical problems solved

[0006] The embodiments of the present application provide a helmet chin opening and closing mechanism and a helmet, which can solve the problem of how to ensure the structural stability of the chin in the closed state in the prior art and improve the convenience of operation.

[0007] (2) Technical solution

[0008] To solve the above technical problems, this application provides the following technical solutions:

[0009] In one aspect, a helmet chin opening and closing mechanism is provided, the helmet chin opening and closing mechanism comprising:

[0010] a chin bar, the chin bar being rotatably mounted on the helmet body;

[0011] a switch button, the switch button being movably disposed on the chin;

[0012] A hook assembly, comprising a hook bracket, a hook, and a spring, wherein the hook bracket is fixed to the chin, the hook is slidably disposed on the hook bracket and is provided with a tenon, and the spring is disposed between the hook and the hook bracket;

[0013] A fixing cover, used for being fixedly mounted on the helmet body, wherein the fixing cover is provided with a groove;

[0014] an action line connected to the switch button and to the hook;

[0015] In which, when the chin is closed, the tenon is clamped in the groove under the action of the spring force, so that the chin and the helmet body are relatively fixed; when the switch button pushes the action line, the action line pulls the hook in the direction away from the fixed cover, so that the tenon is disengaged from the groove, and the chin and the helmet body can rotate relative to each other.

[0016] In some embodiments, the chin is provided with a winding post between the switch push button and the hook, and the winding post is provided with a guide surface or a guide hole for guiding the direction of the action line.

[0017] In some embodiments, the chin is provided with a push button support, the push button support is provided with an axis groove, the axis groove is provided with an opening, the switch push button is provided with a rotating shaft, and the rotating shaft is clamped in the axis groove through the opening.

[0018] In some embodiments, the switch button is provided with a lever and a limit ear, the lever is used to control the movement of the switch button; the chin is provided with a button limit hook in the movement path of the limit ear, the button limit hook is used to contact with the limit ear to limit the maximum movement range of the switch button.

[0019] In some embodiments, the action line is provided with a clamping column, the switch push button is provided with a wire clamping groove, and the clamping column is arranged in the wire clamping groove.

[0020] In some embodiments, the hook bracket is provided with a sleeve slot and a sleeve seat, the action line is provided with a sleeve, and a clamping head is provided at one end of the sleeve, the sleeve is clamped in the sleeve slot, and the clamping head is clamped in the sleeve seat; the hook is provided with a ball head seat, and a ball head is provided at the end of the action line, and the ball head is provided in the ball head seat.

[0021] In some embodiments, the hook bracket is provided with a tenon hole, and the tenon is arranged toward the tenon hole; when the chin is closed, the tenon extends out of the tenon hole; when the switch push button pushes the action line, the tenon retracts into the inner side of the tenon hole.

[0022] In some embodiments, the hook bracket is provided with a slide rail, the hook is provided with a guide bar, and the guide bar is slidably provided on the slide rail.

[0023] In some embodiments, the hook and the hook bracket are respectively provided with spring positioning columns, the spring positioning columns are parallel to the slide rail, and the two ends of the spring are respectively provided on the two spring positioning columns.

[0024] On the other hand, a helmet is provided, comprising the helmet chin opening and closing mechanism and a helmet body.

[0025] (3) Beneficial effects

[0026] Compared with the prior art, the technical solutions provided in the embodiments of the present application have at least the following beneficial effects:

[0027] The helmet chin opening and closing mechanism of the present application is mainly composed of components such as the chin, a switch push button, a hook assembly, a fixed cover and an action line. The chin is rotatably arranged on the helmet body and is the executive component for opening and closing the helmet chin. The switch push button is movably arranged on the chin and serves as a trigger component for user operation. The hook assembly includes a hook bracket, a hook and a spring. The hook bracket is fixed on the chin. The hook is slidably arranged on the hook bracket and is provided with a tenon. The spring is provided between the hook and the hook bracket to provide elastic force for the hook. The fixed cover is fixedly arranged on the helmet body and is provided with a groove for cooperating with the tenon of the hook to fix the chin. The action line is connected to the switch push button and to the hook to transmit force.

[0028] When the chin bar is closed, the tenon of the hook is engaged in the groove of the fixed cover by the spring force, keeping the chin bar and the helmet body relatively fixed and in a stable closed state. To change the position of the chin bar, the user pushes the switch button, which pulls the hook away from the fixed cover via the action line, causing the hook to slide against the spring force, disengaging the tenon from the groove and allowing the chin bar and the helmet body to rotate relative to each other. The user can rotate the chin bar to the desired position, such as forming a 3 / 4 helmet or a full helmet, to meet different wearing requirements.

[0029] When using the helmet chin opening and closing mechanism and helmet disclosed herein, the user only needs to push the switch button to drive the hook to move via the action line, thereby unlocking and locking the chin bar and the helmet body. Furthermore, the switch button is located on the chin bar, allowing the user to unlock and rotate the chin bar with one hand. This is simple and convenient, making it particularly suitable for scenarios requiring quick operation. Furthermore, the cooperation between the tenon of the hook and the groove of the fixing cover, as well as the elastic force of the spring, ensures that the chin bar and the helmet body are firmly connected in the closed state and are not prone to loosening, thereby improving the stability and safety of the helmet. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 is a three-dimensional diagram of a helmet in an embodiment of the present application;

[0032] Figure 2 This is a three-dimensional diagram of the chin opening and closing mechanism of the helmet in the embodiment of the present application;

[0033] Figure 3 is a three-dimensional diagram of the chin, action line and switch button in an embodiment of the present application;

[0034] Figure 4 This is a three-dimensional diagram of the connection between the hook assembly, the action line and the fixed cover in the embodiment of the present application;

[0035] Figure 5 It is a three-dimensional diagram of the hook and the fixed cover in the chin closed state in the embodiment of the present application.

[0036] Reference numerals:

[0037] Chin 1, winding column 11, push button support 12, shaft groove 121, push button limit hook 13;

[0038] Action line 2, clamping column 21, sleeve 22, clamping head 23, ball head 24;

[0039] Switch button 3, rotating shaft 31, dial handle 32, limiting ear 33, wire clamping groove 34;

[0040] Hook bracket 4, sleeve slot 41, sleeve seat 42, tenon hole 43, slide rail 44, first spring positioning column 45;

[0041] Hook 5, tenon 51, ball seat 52, guide strip 53, second spring positioning column 54;

[0042] Fixed cover 6, groove 61, friction plate 62;

[0043] Spring 7;

[0044] Helmet body 8.

[0045] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0046] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0047] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] Unless otherwise stated, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / examples may be further combined, separated, interchanged, and / or rearranged without departing from the technical concepts of the present disclosure.

[0049] The use of cross hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise indicated, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the order described. In addition, the same figure numbers represent the same components.

[0050] Existing helmet chin-bar opening and closing mechanisms are inconvenient to operate, requiring users to exert considerable effort to unlock or fasten the buckle. This is particularly problematic in situations where a helmet needs to be donned or doffed quickly, as traditional structures cannot meet the demands of quick operation. Furthermore, their securement is not stable enough. The buckle can easily loosen after impact or prolonged use, resulting in an unreliable connection between the chin bar and the helmet body, posing a safety hazard.

[0051] In order to solve the above technical problems, this embodiment provides a helmet chin opening and closing mechanism.

[0052] Figure 1 is a three-dimensional diagram of a helmet in an embodiment of the present application, Figure 2 This is a three-dimensional diagram of the chin opening and closing mechanism of the helmet in the embodiment of the present application. Figure 3This is a three-dimensional diagram of the chin, action line and switch button in the embodiment of the present application. Figure 4 This is a three-dimensional diagram of the connection between the hook assembly, the action line and the fixed cover in the embodiment of the present application. Figure 5 This is a three-dimensional diagram of the hook and the fixed cover in the chin closed state in the embodiment of the present application

[0053] See Figures 1 to 5 As shown, this embodiment provides a helmet, which includes a helmet chin opening and closing mechanism and a helmet body 8. The helmet chin opening and closing mechanism includes: a chin 1, an action line 2, a switch button 3, a hook bracket 4, a hook 5, a fixing cover 6 and a spring 7.

[0054] The chin 1 is rotatably mounted on the helmet body 8 via an existing rotating connection such as a pivot. If a chin base is fixedly mounted on the helmet body 8, the chin 1 is mounted on the chin base via a pivot and can be opened or closed relative to the helmet body 8.

[0055] The switch button 3 is movably disposed on the chin 1 and can move relative to the chin 1 to push the action line 2 .

[0056] The hook bracket 4, the hook 5 and the spring 7 form a hook assembly. The hook bracket 4 is fixed to the chin 1, the hook 5 is slidably arranged on the hook bracket 4 and is provided with a tenon 51, and the spring 7 is arranged between the hook 5 and the hook bracket 4.

[0057] The fixing cover 6 is used to be fixedly mounted on the helmet body, and the fixing cover 6 is provided with a groove 61 .

[0058] The action line 2 is connected to the switch push button 3 and connected to the hook 5.

[0059] Among them, such as Figure 4 and Figure 5 As shown, when the chin is closed, the tenon 51 is engaged in the groove 61 by the elastic force of the spring 7, so that the chin 1 and the helmet body 8 are relatively fixed. When the switch push button 3 pushes the action line 2, the action line 2 pulls the hook 5 away from the fixed cover 6, so that the tenon 51 is disengaged from the groove 61, and the chin 1 and the helmet body 8 can rotate relative to each other, thereby opening the chin 1. After the chin 1 is opened, it can be fixed by existing methods, such as providing a retaining structure on the chin base and lens base on the helmet body 8 to keep the chin 1 in the open state. Of course, the spring 7 can also push the hook 5 so that the chin 1 can be fixed by the friction between the hook 5 and the fixed cover 6, or by the hook 5 and other gear structures on the fixed cover 6. This application is not limited to this.

[0060] The above-mentioned action line 2, switch push button 3, hook bracket 4, hook 5, fixing cover 6 and spring 7 are arranged in a group on both sides of the chin 1. At this time, the two ends of the action line 2 are respectively connected to the two hooks 5, and the middle part is connected to the switch push button 3.

[0061] See Figure 3 As shown, in order to facilitate the arrangement and movement of the action line 2 along a preset path on the inside of the chin 1 and the helmet body 8, a winding post 11 is provided on the chin 1 between the switch push button 3 and the hook 5. The winding post 11 is provided with a guide structure for guiding the direction of the action line 2. The guide structure can be a guide surface, which guides the action line 2 to move along the preset path through its specific shape and surface features; or it can be a guide hole, through which the action line 2 passes, thereby being restricted to move in a specific direction, ensuring that the action line 2 will not deviate arbitrarily during the movement, thereby ensuring the accuracy and stability of the movement.

[0062] like Figure 2 and Figure 3 As shown, the switch button 3 is movably mounted on the chin 1, utilizing a rotating mechanism: the chin 1 is provided with a button support 12, which is provided with a shaft slot 121 having an opening. The switch button 3 is provided with a rotating shaft 31, which is inserted into the shaft slot 121 through the opening. During installation, the rotating shaft 31 of the switch button 3 is inserted into the shaft slot 121 through the opening, allowing the switch button 3 to rotate about the rotating shaft 31. This simple and reliable connection ensures the flexible rotation of the switch button 3 while restricting its movement in other directions, thus ensuring the normal operation of the switch button 3.

[0063] The switch button 3 can be movably arranged on the chin 1 and can also use a linear movable structure, that is, a slide groove or slide rail 44 is set on the chin 1, and the switch button 3 is installed on the slide groove or slide rail 44, and the action line 2 is driven to move through linear movement.

[0064] like Figure 2 and Figure 3 As shown, based on the use of a rotating structure of the switch push button 3, the switch push button 3 is provided with a lever 32 and a limiting ear 33 on one side of the rotating axis 31, and the lever 32 is used to control the rotation of the switch push button 3 around the rotating axis 31; the chin 1 is provided with a push button limiting hook 13 in the rotation path of the limiting ear 33, and the push button limiting hook 13 is used to contact with the limiting ear 33 to limit the maximum rotation angle of the switch push button 3.

[0065] like Figure 3 As shown, the actuation line 2 is provided with a clamping column 21, and the switch push button 3 is provided with a wire retaining groove 34 on the other side of the rotation axis. The clamping column 21 is disposed in the wire retaining groove 34. During installation, the clamping column 21 on the actuation line 2 is placed in the wire retaining groove 34. The clamping column 21 and the wire retaining groove 34 cooperate to connect the actuation line 2 and the switch push button 3. When the switch push button 3 is rotated, it can drive the actuation line 2 to move.

[0066] like Figure 3 and Figure 4 As shown, the hook bracket 4 is provided with a sleeve slot 41 and a sleeve seat 42, the action line 2 is provided with a sleeve 22, and a clamping head 23 is provided at one end of the sleeve 22, the sleeve 22 is clamped in the sleeve slot 41, and the clamping head 23 is clamped in the sleeve seat 42; the hook 5 is provided with a ball head seat 52, and the end of the action line 2 is provided with a ball head 24, which is clamped in the ball head seat 52. The use of a clamping connection between the sleeve 22 and the sleeve slot 41, between the clamping head 23 and the sleeve seat 42, and between the ball head 24 and the ball head seat 52 not only facilitates installation, but also enables the action line 2 to stably transmit force, drive the hook 5 to move, and realize the opening and closing of the helmet chin 1.

[0067] like Figure 4 As shown, the hook bracket 4 is provided with a tenon hole 43, and the tenon 51 is arranged toward the tenon hole 43; when the chin is closed, the tenon 51 extends out of the tenon hole 43; when the switch push button 3 pushes the action line 2, the tenon 51 retracts into the inner side of the tenon hole 43, and at this time the helmet chin 1 can be rotated to switch the state.

[0068] like Figure 4 and Figure 5 As shown, the hook 5 can be slidably arranged on the hook bracket 4 in the following manner: the hook bracket 4 is provided with a slide rail 44 , the hook 5 is provided with a guide bar 53 , and the guide bar 53 is slidably arranged on the slide rail 44 .

[0069] like Figure 4 As shown, further, the hook bracket 4 and the hook 5 are respectively provided with a first spring positioning column 45 and a second spring positioning column 54, the first spring positioning column 45 and the second spring positioning column 54 are parallel to the slide rail 44, and the two ends of the spring 7 are respectively provided on the first spring positioning column 45 and the second spring positioning column 54, so that the elastic force of the spring 7 can act on the hook 5 more stably.

[0070] like Figure 5 As shown, the fixed cover 6 is connected between the two grooves 61 by a friction plate 62. The friction plate 62 is arc-shaped and can adapt to the rotation path of the tenon 51, making it convenient for the tenon 51 to switch between the grooves 61 and states.

[0071] The helmet chin opening and closing mechanism and the helmet installation steps of the present application are as follows: Step 1, install the hook 5 into the hook bracket 4: the tenon 51 passes through the tenon hole 43, the guide bar 53 is placed in the slide rail 44, and then the two ends of the spring 7 are respectively clamped into the first spring positioning column 45 and the second spring positioning column 54. Step 2, install the action line 2 to form a "hook 5-action line 2-switch assembly": the end of the action line 2 is extended between the hook bracket 4 and the hook 5 along the axis of the spring 7, the action line 2 is bent and the ball head 24 is placed in the ball head seat 52, and then the action line 2 is straightened, and then the sleeve 22 and the head 23 are pressed into the sleeve seat 42 in sequence, and finally the clamping column 21 in the middle of the action line 2 is pressed into the clamping groove 34 of the switch push button, thus completing the assembly of the "hook 5-action line 2-switch assembly". The third step is to secure the "hook 5 - action wire 2 - switch assembly" to the chin bar 1: insert the sleeve 22 into the sleeve clamp, align the screw holes with the column feet of the chin bar 1, and screw them in to secure. After the action wires 2 on both sides of the switch button pass through the winding posts 11, press the switch button's rotating shaft 31 into the shaft groove 121 of the switch button support on the chin bar 1. Simultaneously, press the stop ears 33 into the button stop hooks 13 on the chin bar 1 to complete the installation. The fixing cover 6 can be pre-secured to the inside of the helmet body with screws.

[0072] In summary, the helmet chin opening and closing mechanism of the present application is mainly composed of components such as the chin 1, the switch push button 3, the hook assembly, the fixed cover 6 and the action line 2. The chin 1 is rotatably arranged on the helmet body 8 and is the executive component for opening and closing the helmet chin. The switch push button 3 is movably arranged on the chin 1 and serves as a trigger component for user operation. The hook assembly includes a hook bracket 4, a hook 5 and a spring 7. The hook bracket 4 is fixed on the chin 1. The hook 5 is slidably arranged on the hook bracket 4 and is provided with a tenon 51. The spring 7 is arranged between the hook 5 and the hook bracket 4 to provide elastic force for the hook 5. The fixed cover 6 is fixedly arranged on the helmet body and is provided with a groove 61 for cooperating with the tenon 51 of the hook 5 to fix the chin 1. The action line 2 is connected to the switch push button 3 and to the hook 5 to transmit force.

[0073] When the chin bar is closed, the tenon 51 of the hook 5 is engaged by the force of the spring 7 within one of the grooves 61 of the fixed cover 6. The chin bar 1 and the helmet body 8 are then relatively fixed, and the chin bar 1 is in a stable closed state. To change the position of the chin bar 1, the user pushes the switch button 3, which pulls the hook 5 away from the fixed cover 6 via the action line 2, causing the hook 5 to slide against the force of the spring 7, disengaging the tenon 51 from the groove 61. The chin bar 1 and the helmet body 8 can then be rotated relative to each other. The user can then rotate the chin bar 1 to a desired position, such as a 3 / 4 helmet position or a full helmet position, to meet different wearing requirements.

[0074] When using the helmet chin opening and closing mechanism and helmet of the present application, the user only needs to push the switch push button 3 to drive the hook 5 to move through the action line 2, thereby unlocking and locking the chin 1 and the helmet body 8. At the same time, the switch push button 3 is set on the chin 1, and the user can complete the unlocking and rotation operations of the chin 1 with one hand. The operation is simple and convenient, and is particularly suitable for scenarios that require quick operation. At the same time, the cooperation between the tenon 51 of the hook 5 and the groove 61 of the fixing cover 6, as well as the elastic force of the spring 7, can ensure that the chin 1 and the helmet body 8 are firmly connected in the closed state and are not easy to loosen, thereby improving the stability and safety of the helmet.

[0075] Last but not least, the innovative features of the helmet chin opening and closing mechanism of the present application are also reflected in the following aspects: First, due to the above-mentioned structural foundation, a plastic hook 5 and a matching groove 61 of a fixing cover 6 can be used to form a snap-fit locking structure. While ensuring reliability, it can solve the problems of heavy weight and potential risks of metal edges or sharp corners scratching the skin during use in existing helmets using metal hook structures. Second, the action line 2 is first protected by a sleeve 22, and metal terminals are used at both ends of the sleeve 22 to form clamps 23. Metal clamps 23 are also used at both ends and in the middle of the line. During assembly, it is only necessary to manually press the corresponding clamps 23 of the action line 2 into the corresponding plastic sleeve seat 42. Third, the chin 1 and the switch push button are also connected by a clamping method in which the rotating shaft 31 cooperates with the shaft groove 121. The structure is simple and effective, and can also be assembled by hand. The combination of the above three aspects allows for quick assembly of components with accurate and secure positioning, significantly improving assembly convenience and efficiency. Minimizing the use of metal components (such as hooks, studs, gaskets, screws, etc.) is also conducive to lightweighting the helmet and avoiding the potential risk of metal edges or sharp corners injuring people or objects during assembly and use.

[0076] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0078] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A helmet chin opening and closing mechanism, provided on the helmet body, characterized in that: include: a chin bar, the chin bar being rotatably mounted on the helmet body; a switch button, the switch button being movably disposed on the chin; A hook assembly, comprising a hook bracket, a hook, and a spring, wherein the hook bracket is fixed to the chin, the hook is slidably disposed on the hook bracket and is provided with a tenon, and the spring is disposed between the hook and the hook bracket; A fixing cover, used for being fixedly mounted on the helmet body, wherein the fixing cover is provided with a groove; an action line connected to the switch button and to the hook; In which, when the chin is closed, the tenon is clamped in the groove under the action of the spring force, so that the chin and the helmet body are relatively fixed; when the switch button pushes the action line, the action line pulls the hook in the direction away from the fixed cover, so that the tenon is disengaged from the groove, and the chin and the helmet body can rotate relative to each other.

2. The helmet chin opening and closing mechanism according to claim 1, characterized in that: The chin is provided with a winding post between the switch push button and the hook, and the winding post is provided with a guide surface or a guide hole for guiding the direction of the action line.

3. The helmet chin opening and closing mechanism according to claim 1, characterized in that: The chin is provided with a push button support, the push button support is provided with an axis groove, the axis groove is provided with an opening, the switch push button is provided with a rotating shaft, and the rotating shaft is clamped in the axis groove through the opening.

4. The helmet chin opening and closing mechanism according to claim 1, characterized in that: The switch button is provided with a lever and a limiting ear, the lever is used to control the movement of the switch button; the chin is provided with a button limiting hook in the movement path of the limiting ear, the button limiting hook is used to contact with the limiting ear to limit the maximum movement range of the switch button.

5. The helmet chin opening and closing mechanism according to claim 1, characterized in that: The action line is provided with a clamping column, the switch push button is provided with a clamping groove, and the clamping column is arranged in the clamping groove.

6. The helmet chin opening and closing mechanism according to claim 1, characterized in that: The hook bracket is provided with a sleeve slot and a sleeve seat, the action line is provided with a sleeve, and a clamping head is provided at one end of the sleeve, the sleeve is clamped in the sleeve slot, and the clamping head is clamped in the sleeve seat; the hook is provided with a ball head seat, and a ball head is provided at the end of the action line, and the ball head is provided in the ball head seat.

7. The helmet chin opening and closing mechanism according to claim 1, characterized in that: The hook bracket is provided with a tenon hole, and the tenon is arranged toward the tenon hole; when the chin is closed, the tenon extends out of the tenon hole; when the switch push button pushes the action line, the tenon retracts into the inner side of the tenon hole.

8. The helmet chin opening and closing mechanism according to claim 1, characterized in that: The hook bracket is provided with a slide rail, and the hook is provided with a guide bar, and the guide bar is slidably provided on the slide rail.

9. The helmet chin opening and closing mechanism according to claim 8, characterized in that: The hook and the hook bracket are respectively provided with spring positioning columns, the spring positioning columns are parallel to the slide rail, and the two ends of the spring are respectively provided on the two spring positioning columns.

10. A helmet, characterized in that: The helmet comprises the helmet chin opening and closing mechanism and a helmet body according to any one of claims 1 to 9.

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