The rotating mechanism of the chin guard structure in a helmet and the helmet itself.

Abstract

This utility model discloses a rotating mechanism for a helmet chin guard structure and a helmet. The rotating mechanism includes a triangular first protrusion and a square first groove that are adapted to each other. One of the first protrusion and the first groove is disposed on the helmet body, and the other is disposed on the chin guard. The first groove is rotatably disposed relative to the first protrusion. Thus, the helmet body and the chin guard can be rotatably connected by the first protrusion and the first groove respectively disposed on the two. The rotatable connection formed by the first protrusion and the first groove is not only simple in structure and low in manufacturing cost, but also simple in connection method, which can greatly improve production efficiency. At the same time, when the square groove rotates relative to the triangle until the vertex of the triangular protrusion abuts against the side of the square groove, the triangular protrusion and the square groove are relatively fixed, thereby fixing the chin guard and the helmet body relatively.

Description

Technical Field

[0001] This utility model relates to protective equipment, specifically to a rotating mechanism for a chin guard structure in a helmet and a helmet. Background Technology

[0002] Generally, helmets with chin guards need to be designed as variable chin guards in order to combine the protective safety of full-face helmets with the ease of use of half-face helmets, while ensuring both safety and comfort.

[0003] A variable chin guard helmet is a helmet in which the chin guard can change its position according to riding needs. In particular, the chin guard can switch between a full-face helmet position (when the helmet is in a full-face helmet shape) and a half-face helmet position (when the helmet is in a half-face helmet shape, that is, the chin guard extends across the top of the helmet and is located at the back of the helmet).

[0004] However, in current technologies, the rotatable connection between the chin guard and the helmet body is quite complex. For example, patent application CN118576022A discloses a helmet visor opening mechanism that can avoid impacts from a variable chin guard. In this mechanism, the chin guard and helmet require a drive gear, a driven gear, and a damping gear to achieve a rotatable connection. This complex connection method not only leads to low production efficiency but also high production costs. The resulting helmets are not competitive in the market due to their high cost.

[0005] Therefore, developing a simple connection structure between the chin guard and the helmet body is of great significance for reducing the cost of variable chin guard helmets and improving their market competitiveness. Utility Model Content

[0006] To solve at least one of the aforementioned problems, according to one aspect of the present invention, a rotating mechanism for a helmet chin guard structure is provided.

[0007] The rotating mechanism of the chin guard structure of the helmet includes a first protrusion and a first groove that are adapted to each other; wherein, the first protrusion is a triangular protrusion; the first groove is a square groove; one of the first protrusion and the first groove is disposed on the helmet body, and the other is disposed on the chin guard; the first groove is rotatably disposed relative to the first protrusion.

[0008] Therefore, the helmet body and the chin guard can be rotatably connected by the first protrusion and the first groove respectively provided on the two. The rotatable connection formed by the first protrusion and the first groove is not only simple in structure and low in manufacturing cost, but also simple in connection method, which can greatly improve production efficiency. At the same time, since the first protrusion is a triangular protrusion and the first groove is a square groove adapted to the triangular protrusion, when the square groove rotates relative to the triangle until the vertex of the triangular protrusion abuts against the side of the square groove, the triangular protrusion and the square groove are relatively fixed, thereby achieving the relative fixation of the chin guard and the helmet body.

[0009] In some embodiments, at least one of the first protrusion and the first groove is made of POM (polyformaldehyde). This improves the fatigue resistance of the first protrusion and the first groove by increasing their rigidity, tensile strength, and flexural strength, while also ensuring good self-lubricating properties, thus enhancing the wear resistance of the rotating mechanism and ensuring its long-term use even under oil-free lubrication conditions.

[0010] In some embodiments, the first protrusion and the first groove constitute a triangular centrifugal motion mechanism. This improves energy utilization efficiency, ensures the stability of the rotation center, avoids localized stress concentration, and guarantees structural strength and durability through the excellent dynamic balance and low vibration of the triangular centrifugal motion mechanism; the non-central points on the triangular centrifugal motion mechanism can undergo complex and controllable motion trajectories.

[0011] In some embodiments, the first protrusion is a Reuleaux triangle protrusion. This allows the Reuleaux triangle protrusion to maintain a constant gap when rotating relative to the square groove, preventing jamming during relative rotation. It also stabilizes the central trajectory of the Reuleaux triangle protrusion relative to the square groove, reducing eccentric vibration. Furthermore, it transforms concentrated loads into uniformly distributed pressure, thereby reducing localized stress concentration and significantly improving the wear resistance and service life of both the Reuleaux triangle protrusion and the square groove.

[0012] According to another aspect of the present invention, a helmet is provided.

[0013] The helmet includes a helmet body; a chin guard; and the aforementioned rotating mechanism for the chin guard structure. Thus, the helmet body and the chin guard can be rotatably connected via the rotating mechanism of the chin guard structure. The rotating mechanism of the chin guard structure, formed by the first protrusion and the first groove, is not only simple in structure and low in manufacturing cost, but also has a simple connection method, which can greatly improve production efficiency. Simultaneously, since the first protrusion in the rotating mechanism of the chin guard structure is a triangular protrusion and the first groove is a square groove adapted to the triangular protrusion, when the square groove rotates relative to the triangle until the apex of the triangular protrusion abuts against the side of the square groove, the triangular protrusion and the square groove are relatively fixed, thereby achieving relative fixation between the chin guard and the helmet body.

[0014] In some embodiments, the chin guard has a first state in which the chin guard is closed relative to the helmet body and a second state in which the chin guard is fully open relative to the helmet body. Thus, a variable chin guard helmet can be obtained.

[0015] In some embodiments, the first protrusion and the first groove are configured such that, when the chin guard is in one of a first state and a second state, at least one vertex of the triangle of the first protrusion contacts the side of the square groove. Since the vertex of the triangular protrusion abuts against the side of the square groove, the relative fixation of the triangular protrusion and the square groove can be achieved, thereby achieving relative fixation of the positions of the chin guard and the helmet body in the first state and / or the second state.

[0016] In some embodiments, one of the helmet body and the chin guard is provided with a second groove, and the other is provided with a mating part adapted to the shape of the second groove; the second groove and the mating part are configured such that when the chin guard is in a first state, the mating part is adapted to the second groove, and / or when the chin guard is in a second state, the mating part is located outside the second groove.

[0017] Therefore, when the chin guard is in the first state, the adapter fits into the second groove, ensuring a tight seal between the chin guard and the helmet body; when the chin guard is in the second state, the adapter moves out of the second groove, ensuring breathability between the chin guard and the helmet body.

[0018] In some embodiments, the mating part is disposed on the fork handle of the chin guard. Thus, when the chin guard is in the first position, the mating part can fit into the second groove, causing the fork handle to close relative to the helmet body, thereby reducing the whistling sound of airflow and reducing the size of the helmet, thereby improving the comfort and storage of the helmet; moreover, the closed fork handle can also directly transfer the impact force on the chin guard to the helmet body, thereby improving the stress characteristics of the helmet and improving the safety and reliability of the helmet.

[0019] In some embodiments, the second groove is provided with a guide section that guides the chin guard from a second state to a first state; and / or the mating part is provided with a mating section that can engage with the guide section during the movement of the chin guard from the second state to the first state. Thus, the guide section and the mating section can guide the chin guard from the second state to the first state, thereby ensuring the stability of the chin guard's rotation relative to the helmet body.

[0020] In some embodiments, each end of the chin guard is rotatably mounted on the helmet body via a separate set of rotating mechanisms for the helmet chin guard structure. Thus, while ensuring the stability of the chin guard's rotatable connection relative to the helmet body, the rotating mechanisms of the helmet chin guard structures on both sides of the helmet body ensure that the chin guard can be fixed relative to the helmet body when rotated to a specific position. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the rotating mechanism of a helmet chin guard structure according to one embodiment of the present invention;

[0022] Figure 2 for Figure 1 The diagram shows the disassembled state of the rotating mechanism of the helmet's chin guard structure.

[0023] Figure 3 This is a schematic diagram of the chin guard of a helmet in a first state according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the chin guard of a helmet in a second state according to an embodiment of the present invention.

[0025] Figure 5 for Figure 3 The diagram shows a partial structural view of the helmet with the first protrusion, the first groove, and the chin guard in a disassembled state.

[0026] Reference numerals: 21, first protrusion; 211, apex; 22, first groove; 221, side; 31, chin guard; 311, mating part; 3111, mating section; 312, fork handle; 32, helmet body; 321, second groove; 3211, guide section. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising" or "including" include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terminology used herein is generally that commonly used by those skilled in the art; in case of any discrepancy with commonly used terminology, the terminology used herein shall prevail.

[0029] Furthermore, for ease of description, spatial relative terms such as “below,” “under,” “lower,” “above,” and “upper” may be used herein to describe the relationship between one element or component and another (or other) element or component as shown in the figure. In addition to the orientation shown in the figure, spatial relative terms are intended to include different orientations of the device during use or operation. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein can be interpreted accordingly.

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

[0031] Figure 1 and Figure 2 The rotating mechanism of a helmet chin guard structure according to one embodiment of the present invention is shown schematically.

[0032] like Figure 1 and Figure 2 As shown, the rotating mechanism of the chin guard structure of the helmet includes a first protrusion 21 and a first groove 22 that are adapted to each other. The first protrusion 21 is a triangular protrusion; the first groove 22 is a square groove; one of the first protrusion 21 and the first groove 22 is provided on the helmet body 32, and the other is provided on the chin guard 31; the first groove 22 is rotatably disposed relative to the first protrusion 21.

[0033] The helmet body 32 and the chin guard 31 can be rotatably connected by the first protrusion 21 and the first groove 22 respectively provided on the two. The rotatable connection formed by the first protrusion 21 and the first groove 22 is not only simple in structure and low in manufacturing cost, but also simple in connection method, which can greatly improve production efficiency. At the same time, since the first protrusion 21 is a triangular protrusion and the first groove 22 is a square groove adapted to the triangular protrusion, when the square groove rotates relative to the triangle until the vertex 211 of the triangular protrusion abuts against the side 221 of the square groove, the triangular protrusion and the square groove are relatively fixed (without external force applied, the relatively fixed state can be released when external force is applied), thereby achieving the relative fixation of the chin guard 31 and the helmet body 32.

[0034] In some preferred embodiments, at least one of the first protrusion 21 and the first groove 22 is made of POM material to improve the fatigue resistance of the first protrusion 21 and the first groove 22 by increasing their rigidity, tensile strength and bending strength, and to ensure that both have good self-lubricating properties, thereby improving the wear resistance of the rotating mechanism and ensuring that the rotating mechanism can be used for a long time even under oilless lubrication conditions.

[0035] In some embodiments, the first protrusion 21 and the first groove 22 constitute a triangular centrifugal motion mechanism, which can be a commonly used triangular centrifugal motion mechanism in the prior art. A triangular centrifugal motion mechanism generally refers to a symmetrical system in which three mass points or vertices rotate around a common center. Its core advantage lies in its symmetry and balanced utilization of centrifugal force, thereby achieving excellent dynamic balance and low vibration, improved energy utilization efficiency, ensuring the stability of the rotation center, avoiding local stress concentration, and ensuring the strength and durability of the structure. Moreover, although the center point of the triangular centrifugal motion mechanism is stable, the non-center points on the triangular centrifugal motion mechanism can undergo complex and controllable motion trajectories.

[0036] In some preferred embodiments, the first protrusion 21 is a Reilly triangle protrusion. Since the Reilly triangle is a special type of constant-width curve geometry (i.e., the width of the Reilly triangle is constant in any direction, equal to the side length of the Reilly triangle), it allows the Reilly triangle protrusion to maintain a constant gap when rotating relative to the square groove, preventing jamming during relative rotation. It also stabilizes the center trajectory of the Reilly triangle protrusion relative to the square groove, reducing eccentric vibration. Furthermore, since the vertices 211 of the Reilly triangle are arc-shaped, the arc-shaped vertices 211 can convert concentrated loads into uniformly distributed pressure, thereby reducing localized stress concentration and significantly improving the wear resistance and service life of both the Reilly triangle protrusion and the square groove.

[0037] Figures 3 to 5A helmet according to one embodiment of the present invention is shown schematically.

[0038] like Figure 3 and Figure 4 As shown, the helmet includes a helmet body 32; a chin guard 31; and the aforementioned rotating mechanism for the chin guard structure. The helmet body 32 and the chin guard 31 are rotatably connected by the rotating mechanism for the chin guard structure. The first protrusion 21 and the first groove 22 in the rotating mechanism for the chin guard structure are not only simple in structure and low in manufacturing cost, but also have a simple connection method, which can greatly improve production efficiency. At the same time, since the first protrusion 21 is a triangular protrusion and the first groove 22 is a square groove adapted to the triangular protrusion, when the square groove rotates relative to the triangle until the vertex 211 of the triangular protrusion abuts against the side 221 of the square groove, the triangular protrusion and the square groove can be relatively fixed, thereby fixing the chin guard 31 and the helmet body 32 relatively.

[0039] In some embodiments, the chin guard 31 has a first state in which the chin guard 31 is closed relative to the helmet body 32 (e.g., Figure 3 (as shown) and the second state where the chin guard 31 is fully open relative to the helmet body 32 (as shown) Figure 4 As shown in the figure, the helmet of this application is a variable chin guard type helmet. Generally, during the process of the chin guard 31 changing from the first state to the second state, the chin guard 31 rotates about 180° relative to the helmet body 32. This angle can also be set to other degrees according to the actual situation of the helmet. This application does not limit the specific value of the rotation angle.

[0040] In some embodiments, such as Figure 3 and Figure 4 As shown, the first protrusion 21 and the first groove 22 are configured such that, when the chin guard 31 is in one of the first and second states, at least one vertex 211 of the triangle of the first protrusion 21 contacts the side 221 of the square groove. Since the vertex 211 of the triangular protrusion abuts against the side 221 of the square groove, the triangular protrusion and the square groove can be relatively fixed (the relatively fixed state can be released when an external force is applied without applying external force), thereby achieving relative fixation of the positions of the chin guard 31 and the helmet body 32 in the first and / or second states. That is, when the chin guard 31 is rotated relative to the helmet body 32 to the helmet shape of a full-face helmet structure and a half-face helmet structure, the chin guard 31 can be fixed relative to the helmet body 32 to ensure the stability of the full-face helmet structure and the half-face helmet structure.

[0041] In some embodiments, continue to refer to Figure 3 and Figure 4As shown, one of the helmet body 32 and the chin guard 31 has a second groove 321 integrally formed or machined on it, and the other has a mating part 311 adapted to the shape of the second groove 321. The second groove 321 and the mating part 311 are configured such that when the chin guard 31 is in a first state, the mating part 311 fits into the second groove 321, and / or when the chin guard 31 is in a second state, the mating part 311 is located outside the second groove 321. When the chin guard 31 is in the first state (the helmet is in a full-face helmet state), the mating part fits into the second groove 321, ensuring a tight seal between the chin guard 31 and the helmet body 32. When the chin guard 31 is in the second state (the helmet is in a half-face helmet state), the mating part moves out of the second groove 321, ensuring ventilation between the chin guard 31 and the helmet body 32. Preferably, the mating part 311 is provided on the fork handle 312 of the chin guard 31. For example, the mating part 311 is connected to or machined onto the fork handle 312, or the mating part 311 is the fork handle 312 itself. The fork handle 312 on the helmet refers to the forked adjustment buckles (usually black plastic parts) on both sides of the helmet used to fix the straps. This design makes the key component of the helmet wearing system mainly play a role in fixing and adjusting. Since the mating part 311 is set on the fork handle 312, when the chin guard 31 is in the first position, the mating part 311 can fit into the second groove 321, so that the fork handle 312 is closed relative to the helmet body 32, thereby reducing the whistling sound of airflow and reducing the size of the helmet, thus improving the comfort and storage of the helmet; moreover, the closed fork handle 312 can also directly transfer the impact force on the chin guard 31 to the helmet body 32, thereby improving the stress characteristics of the helmet and improving the safety and reliability of the helmet.

[0042] In some embodiments, continue to refer to Figure 3 and Figure 4 As shown, the second groove 321 is provided with a guide section 3211 that guides the chin guard 31 from the second state to the first state; and / or the mating part 311 is provided with a mating section 3111, which can engage with the guide section 3211 during the movement of the chin guard 31 from the second state to the first state. The guide section 3211 and the mating section 3111 can guide the chin guard 31 from the second state to the first state, thereby ensuring the stability of the chin guard 31's rotation relative to the helmet body 32.

[0043] In some embodiments, the two ends of the chin guard 31 are rotatably mounted on the helmet body 32 via a separate set of rotating mechanisms for the helmet chin guard structure. Thus, while ensuring the stability of the chin guard 31's rotatable connection with the helmet body 32, the rotating mechanisms of the helmet chin guard structures on both sides of the helmet body 32 can ensure that the chin guard 31 can be fixed relative to the helmet body 32 when rotated to a specific position.

[0044] In this invention, the connection or installation is a fixed connection unless otherwise specified. A fixed connection can be implemented as a detachable or non-detachable connection commonly used in the prior art. A detachable connection can be implemented using existing technologies, such as threaded connections or keyed connections. A non-detachable connection can also be implemented using existing technologies, such as welding or adhesive bonding.

[0045] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A rotating mechanism for a chin guard structure in a helmet, characterized in that, Includes a first protrusion (21) and a first groove (22) that fit together; wherein, The first protrusion (21) is a triangular protrusion; The first groove (22) is a square groove; One of the first protrusion (21) and the first groove (22) is provided on the helmet body (32), and the other is provided on the chin guard (31); The first groove (22) is rotatably disposed relative to the first protrusion (21).

2. The rotating mechanism of the helmet chin guard structure according to claim 1, characterized in that, At least one of the first groove (22) and the first protrusion (21) is made of POM material; and / or The first protrusion (21) and the first groove (22) constitute a triangular centrifugal motion mechanism.

3. The rotating mechanism of the helmet chin guard structure according to claim 1 or 2, characterized in that, The first protrusion (21) is a Leroy triangle protrusion.

4. A helmet, characterized in that, include: Helmet body (32); Jaw protector (31); And the rotating mechanism of the helmet chin guard structure according to any one of claims 1 to 3.

5. The helmet according to claim 4, characterized in that, The chin guard (31) has a first state in which the chin guard (31) is closed relative to the helmet body (32) and a second state in which the chin guard (31) is fully open relative to the helmet body (32).

6. The helmet according to claim 5, characterized in that, The first protrusion (21) and the first groove (22) are configured such that when the jaw guard (31) is in one of the first state and the second state, at least one vertex (211) of the triangle of the first protrusion (21) contacts the side (221) of the square groove.

7. The helmet according to claim 5, characterized in that, One of the helmet body (32) and the chin guard (31) is provided with a second groove (321), and the other is provided with a mating part (311) that matches the shape of the second groove (321); The second groove (321) and the mating part (311) are configured such that when the jaw guard (31) is in the first state, the mating part (311) is adapted in the second groove (321), and / or when the jaw guard (31) is in the second state, the mating part (311) is located outside the second groove (321).

8. The helmet according to claim 7, characterized in that, The mating part (311) is provided on the fork handle (312) of the jaw guard (31).

9. The helmet according to claim 7, characterized in that, The second groove (321) is provided with a guide section (3211) for guiding the jaw guard (31) from the second state to the first state; and / or The mating part (311) is provided with a mating section (3111), which can engage with the guide section (3211) during the process of the jaw guard (31) moving from the second state to the first state.

10. The helmet according to any one of claims 4 to 9, characterized in that... The two ends of the chin guard (31) are rotatably mounted on the helmet body (32) by a set of rotating mechanisms for helmet chin guard structures.

Images