CN220275018U - Lens mechanism and helmet - Google Patents

Abstract

The utility model relates to the technical field of helmets, in particular to a lens mechanism and a helmet. The lens mechanism adjusts and supports the descending angle of the lens component through the rotation of the gear wheel (cam principle) to change the coverage range of the lens, so that different requirements and experiences of a user on the coverage field range of the lens are met, the problem that the lens is difficult to position is solved, in addition, the cam structure is simpler and the operation is simpler, the manufacturing cost and difficulty of the helmet are reduced, and the production efficiency of the helmet is greatly improved.

Description

Lens mechanism and helmet

Technical Field

The utility model relates to the technical field of helmets, in particular to a lens mechanism and a helmet.

Background

The head is the weakest part of the human body and is the part most vulnerable to fatal injury, and the death risk of traffic accidents can be greatly reduced by correctly wearing the helmet. Most of the prior helmets are in a fully opened or fully closed state according to external sunlight or strong light conditions, but in actual use, according to different environments and requirements of a wearer, the lens mechanism in other lens angles is always required, the existing helmet can generally only adjust the fully opened or fully closed state, the state in other lens angles is difficult to position, the lens mechanism is easy to slide down to be in the fully closed state due to gravity or shaking, and the problems of inaccurate positioning and poor stability of the lens are caused.

Disclosure of Invention

The utility model aims at:

the lens mechanism can realize that the lens can be in the opening positions of different angles and cannot slide down to be in a fully closed state due to gravity and shake, so that the lens is accurately positioned, and the stability is improved.

The helmet has the advantages that different opening positions of the lenses are increased, the number of parts is reduced, and the aim of improving the assembly efficiency is fulfilled.

To achieve the purpose, the utility model adopts the following technical scheme:

in a first aspect, a lens mechanism is provided, including a fixing base provided with a plurality of limit buckles; the lens assembly comprises a rocker arm and a lens connected with the rocker arm, the rocker arm is rotatably connected to the fixed seat, a supporting groove is formed in the rocker arm, and the lens assembly is provided with a plurality of opening positions; the gear wheel is relatively fixed on the fixing seat through two limit buckles, a plurality of bosses are arranged on the gear wheel, the bosses are distributed along the circumferential intervals of the gear wheel, the gear wheel can switch the positions of the bosses through rotation, when the lens assembly is in the open position, any one of the bosses is in clamping connection with the supporting groove, and when the bosses are different in clamping connection with the supporting groove, the lens assembly is in different open positions.

Preferably, a gear shifting groove is formed in the fixing base, a gear protrusion is arranged on the rocker arm and is clamped with the gear shifting groove, and the gear wheel can freely rotate and switch the positions of the bosses.

Preferably, the fixing base is provided with a plurality of gear grooves, and when the lens component is in different opening positions, the gear protrusions are clamped in different gear grooves.

Preferably, the fixing seat is provided with a plurality of positioning grooves, the gear wheel is provided with positioning protrusions, and after the gear wheel rotates in place, the positioning protrusions are clamped with the corresponding positioning grooves to fix the gear wheel.

Preferably, the gear wheel is further provided with a plurality of anti-slip teeth.

Preferably, the fixing seat is provided with a first limiting buckle and a second limiting buckle, the gear wheel is provided with a first limiting step and a second limiting step, the first limiting buckle is slidably connected with the first limiting step, and the second limiting buckle is slidably connected with the second limiting step.

Preferably, the gear wheel is provided with a limiting hole, the limiting hole is arc-shaped, the first limiting buckle is located in the limiting hole, and the first limiting buckle is matched with the limiting hole to limit the rotation range of the gear wheel.

Preferably, the rocker arm is provided with a lens buckle, the lens is provided with a lens clamping groove, and the lens buckle is clamped in the lens clamping groove.

Preferably, the rocker arm is further provided with a lens positioning plate for fixing the upper and lower positions of the lens.

In a second aspect, a helmet is provided, including a helmet body, and further including the lens mechanism described above, where the fixing seat of the lens mechanism is provided with a fixing buckle, and the fixing buckle is used to fix the lens mechanism on the helmet body.

The utility model has the beneficial effects that:

the utility model provides a lens mechanism and a helmet, wherein the lens mechanism comprises a fixed seat, a lens component and a gear wheel, and the lens component and the gear wheel are connected to the fixed seat in a rotating way; the lens component comprises a rocker arm, and a supporting groove is formed in the rocker arm; a plurality of bosses are arranged on the gear wheel; when the lens component is in the open position, any boss is clamped with the supporting groove, and when different bosses are clamped with the supporting groove, the lens component is in different open positions. The lens mechanism changes the coverage area of the lens by adjusting the descending angle of the supporting lens component through the rotation of the gear wheel (cam principle), so that the lens angle is controlled, the problem that the lens is difficult to position is solved, in addition, the cam structure is simpler and the operation is simpler, the manufacturing cost and difficulty of the helmet are reduced, and the production efficiency of the helmet is greatly improved.

Drawings

FIG. 1 is a schematic view of a helmet with a lens mechanism in an embodiment of the present utility model;

FIG. 2 is a schematic view of a holder of a lens mechanism according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a lens assembly of a lens mechanism according to an embodiment of the present utility model;

FIG. 4 is a front view of a gear wheel in a lens mechanism according to an embodiment of the present utility model;

FIG. 5 is a rear view of the gear wheel of the lens mechanism in an embodiment of the present utility model;

FIG. 6 is an enlarged view of a portion of the lens mechanism in a first gear in an embodiment of the utility model;

FIG. 7 is an enlarged view of a portion of the lens mechanism in a second gear in an embodiment of the utility model;

fig. 8 is an enlarged view of a portion of the lens mechanism in a third gear in an embodiment of the utility model.

In the figure:

1. a fixing seat; 11. a gear groove; 111. a first gear groove; 112. a second gear groove; 113. a third gear groove; 12. a shift slot; 13. a positioning groove; 131. a first positioning groove; 132. a second positioning groove; 133. a third positioning groove; 14. a first fixing hole; 15. a second fixing hole; 16. the first limiting buckle; 17. the second limiting buckle; 18. a fixing buckle;

2. a lens assembly; 21. a rocker arm; 211. a support groove; 212. a gear projection; 213. a lens buckle; 214. a lens positioning plate; 215. a lens fixing hole; 22. a lens; 221. a lens clamping groove;

3. a gear wheel; 31. a boss; 311. a first boss; 312. a second boss; 32. positioning the bulge; 33. a limiting hole; 34. anti-slip teeth; 35. a gear wheel fixing hole; 36. a first limit step; 37. second spacing step

4. A helmet body.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

The embodiment provides a lens mechanism, can be applied to helmet technical field, changes the coverage of lens 22 through the rotation (cam principle) adjustment support lens subassembly 2 of gear wheel and descends the angle and has realized the control to the lens angle, has solved the difficult problem of location of lens to improve the stability of lens.

As shown in fig. 1-4, a lens mechanism comprises a fixed seat 1, a lens component 2 and a gear wheel 3; the lens component 2 comprises a rocker arm 21 and a lens 22 connected with the rocker arm 21, the rocker arm 21 is rotatably connected to the fixed seat 1, a supporting groove 211 is formed in the rocker arm 21, and the lens component 2 has a plurality of open positions; the gear wheel 3 rotates to be connected on the fixing base 1, is provided with a plurality of bosses 31 on the gear wheel 3, and a plurality of bosses 31 are arranged along the circumference interval of gear wheel 3, and the gear wheel 3 can be through rotating the position of switching a plurality of bosses 31, and when lens subassembly 2 was in the open position, arbitrary boss 31 and support groove 211 joint wherein, and when the boss 31 and the support groove 211 joint of difference, lens subassembly 2 was in different open position. The angle of the lens 22 is controlled by clamping the plurality of bosses 31 on the gear wheel 3 with the supporting grooves 211 on the rocker arm 21, so that the problem that the lens assembly 2 is difficult to position is solved, and the stability of the lens assembly 2 is enhanced.

The gear shifting groove 12 is arranged on the fixed seat 1, the gear protrusion 212 is arranged on the rocker arm 21, the gear protrusion 212 is clamped with the gear shifting groove 12, and the gear wheel 3 can freely rotate and switch the positions of the bosses 31. When the position of the boss 31 of the gear wheel 3 needs to be adjusted to switch the open position of the lens 22, the lens assembly 2 needs to be lifted first, and then the gear wheel 3 is rotated to switch the positions of the bosses 31. Of course, when the lens 22 needs to be adjusted to the full open position or when the lens assembly 2 needs to be fixed on the adjusting gear wheel 3, the gear projection 212 is directly clamped into the gear shifting groove 12. Preferably, the gear boss 212 is made of rubber, so that the adjustment of the clamping position is facilitated and the gear boss is not easy to damage.

The fixing base 1 is provided with a plurality of gear grooves 11, and when the lens component 2 is in different opening positions, the gear protrusions 212 are clamped in the different gear grooves 11.

The fixed seat 1 is provided with a plurality of positioning grooves 13, the gear wheel 3 is provided with positioning protrusions 32, and after the gear wheel 3 rotates in place, the positioning protrusions 32 are clamped with the corresponding positioning grooves 13 to fix the gear wheel 3.

The gear wheel 3 is also provided with a plurality of anti-slip teeth 34, and when the gear wheel 3 is manually rotated, the friction force can be increased by the anti-slip teeth 34, so that the gear wheel 3 is rotated more conveniently and more conveniently. Of course, in other embodiments, the gear wheel may be subjected to anti-slip treatment by other anti-slip methods, such as spraying anti-slip agent, and the anti-slip treatment is well known to those skilled in the art, and thus will not be described herein.

As shown in fig. 6, when the gear wheel 3 is located in the first gear, the positioning protrusion 32 is clamped in the first positioning groove 131, the lens assembly 2 falls onto the gear wheel 3, and the gear protrusion 212 on the rocker arm 21 is clamped in the first gear groove 111, so that the lens assembly 2 is in a fully closed state;

as shown in fig. 7, when the gear wheel 3 is located in the second gear, the positioning protrusion 32 is clamped in the second positioning groove 132, the falling back supporting groove 211 of the lens assembly 2 is clamped with the second boss 312, and the gear protrusion 212 on the rocker arm 21 is clamped in the second gear groove 112, so that the lens assembly 2 is in the first partially opened state;

as shown in fig. 8, when the gear wheel 3 is located in the third gear, the positioning protrusion 32 is clamped in the third positioning groove 133, the supporting groove 211 of the lens assembly 2 is clamped with the first boss 311, and the gear protrusion 212 on the rocker arm 21 is clamped in the third gear groove 113, so that the lens assembly 2 is in the second partially opened state. Of course, in other embodiments, the number of the boss 31, the positioning groove 13 and the gear groove 11 may be increased according to specific manufacturing and production conditions, and other boss 31, positioning groove 13 and gear groove 11 that can open the lens assembly 2 at different angles may be added.

The fixed seat 1 is provided with a first limiting buckle 16 and a second limiting buckle 17, the gear wheel 3 is provided with a first limiting step 36 and a second limiting step 37, the first limiting buckle 16 is slidably connected with the first limiting step 36, and the second limiting buckle 17 is slidably connected with the second limiting step 37. The first limiting buckle 16 and the second limiting buckle 17 are used for connecting the gear wheel 3 to the fixed seat 1 in a sliding manner under the condition that the rotation of the gear wheel 3 is not affected.

Be provided with spacing hole 33 on the gear wheel 3, spacing hole 33 is the arc, and first spacing buckle 16 is located spacing hole 33, and first spacing buckle 16 and spacing hole 33 cooperation are used for prescribing a limit to the rotation range of gear wheel 3 to avoid gear wheel 3 excessive rotation, gear wheel 3 and other parts produce the conflict and cause the damage of gear wheel 3 or other parts.

The rocker arm 21 is provided with a lens buckle 213, the lens 22 is provided with a lens clamping groove 221, and the lens buckle 213 is clamped in the lens clamping groove 221. The lens 22 is fixed on the rocker arm 21 in a clamping manner, so that the lens 22 is convenient to detach, and in use, the lens 22 can be reused only by replacing the lens 22 after scraping or other damage, thereby reducing the rejection rate of the helmet and prolonging the service life of the helmet. Of course, in other embodiments, the lens buckle 213 and the lens slot 221 are not limited to square, but may be triangular, circular, or other shapes. In addition, the number of the lens clips 213 and the lens slots 221 is not limited to two, but may be larger than two, so that the use is not affected when the lens clips 213 and the lens slots 221 are damaged.

The rocker arm 21 is also provided with a lens positioning plate 214 for fixing the upper and lower positions of the lens 22, so that the lens 22 cannot shake when meeting a bumpy road section in use, and the stability of the lens 22 is enhanced

Fixing base 1 and gear wheel 3 are integrated into one piece injection moulding, in this embodiment, fixing base 1 and gear wheel 3 integrated into one piece make can improve production efficiency to can reduce the manufacturing and the error of equipment of instrument cover 2 and kuppe 3 itself, make its cooperation relation more stable, can not appear the condition that the cooperation is makeed mistakes, thereby cause the waste of resource.

The embodiment also provides a helmet, including the helmet body 4, still include the lens mechanism in the above-mentioned scheme, be provided with fixed buckle 18 on the fixing base 1 of lens mechanism for be fixed in on the helmet body to pass lens fixed orifices 215 and fixing base 1's first fixed orifices 14 through the bolt, together fix lens subassembly 2 and fixing base 1 on the helmet body 4 and pass gear wheel fixed orifices 35 and fixing base 1's second fixed orifices 15 through the bolt, together fix gear wheel 3 and fixing base 1 on the helmet body 4, thereby fix whole lens mechanism on the helmet body 4, through this structure, can accelerate the packaging efficiency of helmet, and reduce the use of bolt and installing support, can reduce the wasting of resources, reduction in production cost.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A lens mechanism, comprising:

a fixed seat (1);

the lens assembly (2) comprises a rocker arm (21) and a lens (22) connected with the rocker arm (21), the rocker arm (21) is rotatably connected to the fixed seat (1), a supporting groove (211) is formed in the rocker arm (21), and the lens assembly (2) is provided with a plurality of opening positions;

gear wheel (3), rotate connect in on fixing base (1), be provided with a plurality of bosss (31) on gear wheel (3), a plurality of boss (31) are followed the circumference interval of gear wheel (3) is arranged, gear wheel (3) can be through rotating the position of switching a plurality of boss (31), works as lens subassembly (2) are in when opening the position, arbitrary boss (31) with support groove (211) joint, and the difference boss (31) with when support groove (211) joint, lens subassembly (2) are in the difference open position.

2. The lens mechanism according to claim 1, characterized in that a gear shifting groove (12) is formed in the fixing seat (1), a gear protrusion (212) is formed in the rocker arm (21), the gear protrusion (212) is clamped with the gear shifting groove (12), and the gear wheel (3) can freely rotate and switch positions of a plurality of bosses (31).

3. Lens mechanism according to claim 2, characterized in that the holder (1) is provided with a plurality of gear grooves (11), the gear projections (212) being snapped into different gear grooves (11) when the lens assembly (2) is in different said open positions.

4. The lens mechanism according to claim 1, wherein a plurality of positioning grooves (13) are formed in the fixing base (1), positioning protrusions (32) are formed in the gear wheel (3), and after the gear wheel (3) rotates in place, the positioning protrusions (32) are clamped with the corresponding positioning grooves (13) to fix the gear wheel (3).

5. The lens mechanism according to claim 1, characterized in that the gear wheel (3) is further provided with a plurality of anti-slip teeth (34).

6. The lens mechanism according to claim 1, characterized in that the fixing seat (1) is provided with a first limit buckle (16) and a second limit buckle (17), the gear wheel (3) is provided with a first limit step (36) and a second limit step (37), the first limit buckle (16) is slidably connected to the first limit step (36), and the second limit buckle (17) is slidably connected to the second limit step (37).

7. The lens mechanism according to claim 6, wherein the gear wheel (3) is provided with a limiting hole (33), the limiting hole (33) is arc-shaped, the first limiting buckle (16) is located in the limiting hole (33), and the first limiting buckle (16) and the limiting hole (33) are matched to limit the rotation range of the gear wheel (3).

8. The lens mechanism according to claim 1, wherein a lens catch (213) is provided on the rocker arm (21), a lens catch groove (221) is provided on the lens (22), and the lens catch (213) is engaged in the lens catch groove (221).

9. Lens mechanism according to claim 8, characterized in that the rocker arm (21) is further provided with a lens positioning plate (214) for fixing the up-down position of the lens (22).

10. Helmet comprising a helmet body (4), characterized in that it comprises a lens mechanism according to any one of claims 1-9, wherein the fixing seat (1) of the lens mechanism is provided with a fixing buckle (18) for fixing the lens mechanism to the helmet body.