Lens rotation structure for safety helmet

Abstract

This utility model discloses a lens rotation structure for a safety helmet. The key technical features include a connecting block, a connecting arm, and a lens assembly. Two sets of connecting blocks are symmetrically installed on both sides of the helmet body. One end of the connecting arm is rotatably connected to the connecting block, and the other end is rotatably connected to the lens assembly. A rotation-limiting structure is provided between the lens assembly, the connecting block, and the connecting arm. This rotation-limiting structure allows the connecting arm to rotate and stop circumferentially along the connecting block. The rotation-limiting structure also allows the lens assembly to rotate and stop circumferentially along the end of the connecting arm. This lens rotation structure can be used flexibly with the safety helmet.

Description

Technical Field

[0001] This utility model relates to a safety helmet, and more specifically, to a lens rotation structure for a safety helmet. Background Technology

[0002] An innovative personal protective equipment that combines head and eye protection – the safety helmet with goggles – is designed for work environments where both head impact and eye splashes are required.

[0003] However, in actual use, especially in rainy conditions, the equipment has revealed some design shortcomings: because the brim cannot completely cover the lens, rainwater can easily flow down the brim into the inside of the lens and then splash onto the face and eyes, which undoubtedly greatly affects the user's wearing experience.

[0004] To address the issue of rainwater seepage, the current common design involves rotating the lens under the brim. However, this design also has drawbacks: firstly, the lens is difficult to keep in place during use, easily shifting and interfering with vision, thus affecting the protective effect and user experience; secondly, when the lens is not in use, rotating it under the brim can obstruct the user's peripheral vision, further reducing the user experience; and if the lens is removed, the operation is cumbersome, and storing the removed lens is inconvenient, affecting the ease of subsequent use.

[0005] Therefore, developing a helmet that allows for flexible and convenient lens rotation while ensuring stability and comfort during use has become an urgent need. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a lens rotation structure for safety helmets, which can be used flexibly in conjunction with safety helmets.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a lens rotation structure for a safety helmet, comprising a connecting block, a connecting arm, and a lens assembly. Two sets of connecting blocks are provided and symmetrically installed on both sides of the helmet body. One end of the connecting arm is rotatably connected to the connecting block, and the other end is rotatably connected to the lens assembly.

[0008] A limited rotation structure is provided between the lens assembly and the connecting block and the connecting arm. The limited rotation structure is used to allow the connecting arm to rotate and stop along the circumferential direction of the connecting block. The limited rotation structure is also used to allow the lens assembly to rotate and stop along the circumferential direction of the end of the connecting arm.

[0009] The present invention is further configured such that: the rotation limiting structure includes a limiting groove and a limiting protrusion, and the limiting groove and / or the limiting protrusion are provided in multiple sets.

[0010] The present invention is further configured such that: a plurality of snap-fit ​​arms are provided on one side of the connecting block, and a snap-fit ​​groove is provided on the cap body for the snap-fit ​​arms to be inserted from top to bottom.

[0011] The present invention is further configured such that: both the connecting block and the lens assembly are provided with locking grooves, both ends of the connecting arm are provided with locking heads that are inserted into the locking grooves, one end of the locking head is provided with a locking arm in the circumferential direction, and the locking groove is provided with a stepped locking wall.

[0012] The present invention is further configured such that both ends of the connecting arm can be detachably installed with unlocking components, which are used to restrict the pulling out of the locking head.

[0013] The present invention is further configured such that: the unlocking component includes a columnar locking block and a locking block, the locking block is disposed on the periphery of the columnar locking block, and the locking head is provided with a connecting groove for the columnar unlocking block to be inserted in the middle;

[0014] The connecting groove is provided with a slot for the card block to be inserted.

[0015] The present invention is further configured such that: multiple sets of the card blocks and card slots are provided, the card blocks are arranged at equal intervals along the circumference of the columnar locking block, and the card slots are arranged at equal intervals along the circumference of the connecting groove.

[0016] The present invention is further configured such that a screwdriver groove is provided at the end of the columnar locking block.

[0017] The present invention is further configured such that: the cap body is provided with a front brim and a side brim, and the connecting arm is configured in an L-shape.

[0018] The present invention is further configured such that: the connecting arm includes a first end face and a second end face, the first end face is connected to the connecting block, the second end face is connected to the lens assembly, and the first end face and the second end face are arranged in parallel.

[0019] In summary, this utility model has the following beneficial effects: through the design of the rotation limiting structure, the relative positions of the lens and the connecting arm and the connecting arm and the connecting block can be changed, so that the rotation structure can perfectly fit the cap structure. Furthermore, through the design of the rotation limiting structure, the lens assembly and the connecting arm can rotate and stay at various angles to meet the various angle usage requirements during use. Attached Figure Description

[0020] Figure 1 This is a front view structural diagram of a safety helmet;

[0021] Figure 2 This is a three-dimensional structural diagram of a safety helmet;

[0022] Figure 3 A three-dimensional structural diagram of the rotating structure;

[0023] Figure 4 This is a three-dimensional structural diagram of the connecting block and the connecting arm;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the connecting block;

[0025] Figure 6 This is a three-dimensional structural diagram of the connecting arm;

[0026] Figure 7 This is a 3D structural diagram of the unlocking component.

[0027] Reference numerals: 1. Connecting block; 11. Snap-fit ​​arm; 12. Locking groove; 13. Snap-fit ​​wall; 2. Connecting arm; 21. Locking head; 22. Snap-fit ​​arm; 23. Connecting groove; 24. Snap-fit ​​groove; 25. Screwdriver groove; 3. Lens assembly; 4. Rotation limiting structure; 41. Limiting groove; 42. Limiting protrusion; 5. Unlocking component; 51. Columnar locking block; 52. Snap-fit ​​block; 6. Cap body; 61. Front cap brim; 62. Side cap brim; 7. First end face; 8. Second end face. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0029] Reference Figures 1 to 7 As shown, in order to achieve the above objectives, the present invention provides the following technical solution: a lens rotation structure for a safety helmet, including a connecting block 1, a connecting arm 2 and a lens assembly 3. Two sets of connecting blocks 1 are provided and are symmetrically installed on both sides of the helmet body 6. One end of the connecting arm 2 is rotatably connected to the connecting block 1 and the other end is rotatably connected to the lens assembly 3.

[0030] A limited rotation structure 4 is provided between the lens assembly 3 and the connecting block 1 and the connecting arm 2. The limited rotation structure 4 is used to allow the connecting arm 2 to rotate and stop along the circumferential direction of the connecting block 1; the limited rotation structure 4 is also used to allow the lens assembly 3 to rotate and stop along the circumferential direction of the end of the connecting arm 2.

[0031] The design of this utility model can change the relative position of the lens and the connecting arm 2 and the relative position of the connecting arm 2 and the connecting block 1 through the design of the rotation limiting structure 4, so that the rotating structure can perfectly fit the cap body 6 structure. Furthermore, through the design of the rotation limiting structure 4, the lens assembly 3 and the connecting arm 2 can rotate and stay at various angles to meet the various angle usage requirements during use.

[0032] The present invention is further configured such that: the rotation limiting structure 4 includes a limiting groove 41 and a limiting protrusion 42, and multiple sets of limiting groove 41 and / or limiting protrusion 42 are provided.

[0033] This has multiple embodiments: 1. Multiple sets of limiting grooves 41 are provided, and one set of limiting protrusions 42 is provided;

[0034] 2. Both the limiting groove 41 and the limiting protrusion 42 are provided with multiple sets;

[0035] 3. The limiting groove 41 is provided with one set, and the limiting protrusion 42 is provided with multiple sets.

[0036] The limiting protrusions 42 are some protrusions with slight elasticity. Preferably, the number of limiting protrusions 42 is consistent with the number of limiting grooves 41, thereby providing a relatively stable limiting force.

[0037] This structure can adjust the lens angle and the rotation angle of the connecting arm 2 according to the locking position of the limiting protrusion 42 and the limiting groove 41 to meet the specific usage conditions.

[0038] This utility model is further configured such that: multiple sets of snap-fit ​​arms 11 are provided on one side of the connecting block 1, and snap-fit ​​grooves are provided on the cap body 6 for the snap-fit ​​arms 11 to be inserted from top to bottom. For example... Figure 3 As shown, the connecting block 1 is snapped into the snap-fit ​​groove by the snap-fit ​​arm 11. The snap-fit ​​arm 11 is provided with a hook-shaped structure, which can hook onto the inner wall of the snap-fit ​​groove, thereby improving the connection strength.

[0039] The present invention is further configured such that: both the connecting block 1 and the lens assembly 3 are provided with locking grooves 12, both ends of the connecting arm 2 are provided with locking heads 21 that are inserted into the locking grooves 12, one end of the locking head 21 is provided with a locking arm 22 in a circumferential direction, and the locking groove 12 is provided with a stepped locking wall 13.

[0040] When the locking head 21 is inserted into the locking groove 12, the locking arm 22 can lock onto the locking wall 13, thus providing an initial engagement force.

[0041] The present invention is further configured such that both ends of the connecting arm 2 are detachably equipped with unlocking parts 5, which are used to restrict the pulling out of the locking head 21.

[0042] The unlocking component 5 can provide a secondary locking function, improving the connection strength between the connecting arm 2, the connecting block 1, and the lens assembly 3.

[0043] The present invention is further configured such that: the unlocking component 5 includes a columnar locking block 51 and a locking block 52, the locking block 52 is disposed on the periphery of the columnar locking block 51, and the locking head 21 is provided with a connecting groove 23 for the columnar unlocking block to be inserted in the middle.

[0044] The connecting groove 23 is provided with a slot 24 for the card block 52 to be inserted.

[0045] When the columnar locking block 51 is inserted into the inner side of the locking arm 22, the columnar locking block 51 abuts against the locking arm 22, preventing the locking arm 22 from bending and unlocking, thereby restricting the separation of the locking head 21 from the locking groove 12.

[0046] At the same time, the locking block 52 is inserted into the locking slot 24 to form a fixed position. The difference between the locking block 52 and the locking arm 22 is that the locking arm 22 has a deformation space and can be bent and deformed, while the locking block 52 can only be squeezed and deformed. Therefore, the locking block 52 can provide a stronger fixing effect.

[0047] This utility model is further configured such that multiple sets of locking blocks 52 and locking slots 24 are provided. The locking blocks 52 are arranged at equal intervals along the circumference of the columnar locking block 51, and the locking slots 24 are arranged at equal intervals along the circumference of the connecting groove 23. The design of multiple sets of locking blocks 52 and locking slots 24 can improve the fixing effect.

[0048] The present invention is further configured such that: a screwdriver groove 25 is provided at the end of the columnar locking block 51. When unlocking is required, a screwdriver can be inserted into the screwdriver groove 25 and rotated to separate the locking block 52 from the groove 24. Then the unlocking component 5 can be pulled out, at which time the locking arm 22 can swing inward, thereby separating from the connecting block 1.

[0049] The present invention is further configured such that: the cap body 6 is provided with a front brim 61 and a side brim 62, and the connecting arm 2 is configured in an L-shape.

[0050] The design of this structure, through the comprehensive brim structure, increases the coverage of the hat body, providing better protection against rain during normal use.

[0051] By providing an arc-shaped portion on the connecting arm 2, interference between the lens and the side eaves can be avoided while maintaining the side eaves.

[0052] The present invention is further configured such that: the connecting arm 2 includes a first end face 7 and a second end face 8, the first end face 7 is connected to the connecting block 1, the second end face 8 is connected to the lens assembly 3, and the first end face 7 and the second end face 8 are arranged in parallel.

[0053] By using the dual-point rotation feature, the angle of the lens can be adjusted to avoid interference between the rotating arm and the brim during rotation.

[0054] like Figure 2 As shown, when the lens is in use and located below the brim, the upper end of the lens can abut against the lower end of the brim, thus preventing the lens from shifting upwards.

[0055] When the lens is in use and above the brim, the lower end of the lens can abut against the upper surface of the brim, thus preventing the lens from shifting downwards and ensuring the stability of the lens during use and storage.

[0056] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A lens rotation structure for a safety helmet, characterized by: It includes a connecting block (1), a connecting arm (2) and a lens assembly (3). The connecting block (1) is provided in two sets and is symmetrically installed on both sides of the cap body (6). One end of the connecting arm (2) is rotatably connected to the connecting block (1) and the other end is rotatably connected to the lens assembly (3). The lens assembly (3) and the connecting block (1) are each provided with a limited rotation structure (4) between them and the connecting arm (2). The limited rotation structure (4) is used to allow the connecting arm (2) to rotate and stop along the circumferential direction of the connecting block (1). The limited rotation structure (4) is also used to allow the lens assembly (3) to rotate and stop along the circumferential direction of the end of the connecting arm (2).

2. A lens rotation structure for a safety helmet according to claim 1, characterized in that: The rotation limiting structure (4) includes a limiting groove (41) and a limiting protrusion (42), and multiple sets of the limiting groove (41) and / or limiting protrusion (42) are provided.

3. A lens rotation structure for a safety helmet according to claim 1, characterized in that: The connecting block (1) has multiple sets of snap-fit ​​arms (11) on one side, and the cap (6) has snap-fit ​​grooves for the snap-fit ​​arms (11) to be inserted from top to bottom.

4. A lens rotation structure for a safety helmet according to claim 1, characterized in that: Both the connecting block (1) and the lens assembly (3) are provided with locking grooves (12). Both ends of the connecting arm (2) are provided with locking heads (21) that are inserted into the locking grooves (12). One end of the locking head (21) is provided with a locking arm (22) in a circumferential direction. The locking groove (12) is provided with a stepped locking wall (13).

5. A lens rotation structure for a safety helmet according to claim 4, characterized in that: Both ends of the connecting arm (2) can be detachably equipped with unlocking components (5), which are used to restrict the pulling out of the locking head (21).

6. A lens rotation structure for a safety helmet according to claim 5, characterized in that: The unlocking component (5) includes a columnar locking block (51) and a locking block (52). The locking block (52) is disposed on the periphery of the columnar locking block (51), and the locking head (21) has a connecting groove (23) in the middle for the columnar unlocking block to be inserted. The connecting groove (23) is provided with a slot (24) for the card block (52) to be inserted.

7. A lens rotation structure for a safety helmet according to claim 6, characterized in that: Multiple sets of the card blocks (52) and card slots (24) are provided. The card blocks (52) are arranged at equal intervals along the circumference of the columnar locking block (51), and the card slots (24) are arranged at equal intervals along the circumference of the connecting groove (23).

8. A lens rotation structure for a safety helmet according to claim 6, characterized in that: The end of the columnar locking block (51) is provided with a screwdriver groove (25).

9. A lens rotation structure for a safety helmet according to any one of claims 1 to 8, characterized in that: The cap body (6) is provided with a front brim (61) and a side brim (62), and the connecting arm (2) is arranged in an L-shaped structure.

10. A lens rotation structure for a safety helmet according to claim 9, characterized in that: The connecting arm (2) includes a first end face (7) and a second end face (8). The first end face (7) is connected to the connecting block (1), and the second end face (8) is connected to the lens assembly (3). The first end face (7) and the second end face (8) are arranged in parallel.

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