CN205121043U - A lens protection front cover - Google Patents

Abstract

The utility model discloses a lens protection front cover, the front cover shell body is made of elastic blister material, a limiting boss and a buckle convex ring are arranged on the inner side of the front cover shell body, the limiting boss is close to the bottom of the front cover shell body, and the buckle convex ring is arranged on the inner side edge of the front cover shell body, when the front cover shell body is buckled on the lens, the limiting boss abuts against the front side edge of the lens, and the buckle convex ring clamps the rear end side of the lens, so that the utility model is firmly buckled on the lens; in addition, the avoidance cavity at the bottom of the front cover shell body effectively avoids the problem that the bottom of the front cover shell body touches the front side of the lens and damages the lens. The utility model has the characteristics of simple structure, easy disassembly and assembly, and practicality.

Description

A lens protection front cover

【Technical field】

The utility model relates to a lens protection device, in particular to a lens protection front cover.

【Background technique】

During use, the ends are easily damaged. When not in use, it is usually necessary to buckle a protective front cover on the lens. In the prior art, the protective front cover is easy to fall off; in addition, when the protective front cover is buckled on the lens, the bottom of the protective front cover is easy to Touching the lens may easily damage the lens.

The utility model researches and proposes in view of the deficiencies in the prior art.

【Content of utility model】

The technical problem to be solved by the utility model is to provide a lens protection front cover. The front cover shell is made of elastic plastic-absorbing material. On the front side edge, the buckle convex ring clamps the rear end side of the lens, so that the utility model is firmly fastened to the lens; in addition, the avoidance cavity at the bottom of the front cover shell effectively prevents the bottom of the front cover shell from touching In order to solve the problem of damaging the lens due to the front side of the lens, the utility model has the characteristics of simple structure, easy disassembly and assembly and practicality.

In order to solve the above-mentioned technical problems, the utility model provides a lens protection front cover, which includes a cylindrical front cover shell with one side open and made of elastic plastic-absorbing material, and the inner side wall of the front cover shell is arranged There is a limited protrusion, the inner edge of the front cover housing is provided with a buckle convex ring along the circumference, and the inner bottom of the front cover housing is provided with an escape cavity.

The inner wall of the front cover housing is provided with exhaust grooves along the axial direction.

There are three limiting bosses evenly distributed along the circumference.

There are three snap rings evenly distributed along the circumferential direction.

One end of the exhaust groove extends to the bottom of the front cover shell, and the other end extends to the edge of the front cover shell.

Three exhaust grooves are evenly distributed along the circumferential direction.

Compared with the prior art, the utility model is a lens protection front cover, which has the following advantages:

1. The front cover shell is made of elastic blister material. Through elastic deformation, the buckle convex ring firmly locks the lens in the front cover shell.

2. The limit boss provided in the front cover housing abuts against the front side of the lens, preventing the front side of the lens from touching the bottom of the front cover housing and scratching the lens.

3. In order to further prevent the lens from touching the bottom surface of the front cover shell, an avoidance cavity is provided on the bottom surface inside the front cover shell. When the front cover shell is deformed, the bottom of the front cover shell is still in contact with the front side of the lens. Keep it in a non-contact state, which is beneficial to protect the lens.

4. For smooth fastening, an exhaust groove is provided on the inner side wall of the front cover casing along the axial direction, through which the air in the front cover casing can be effectively discharged to further ensure a firm fastening.

【Description of drawings】

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail, wherein:

Fig. 1 is one of perspective views of the utility model.

Fig. 2 is the second perspective view of the utility model.

Fig. 3 is a schematic diagram of the utility model buckled in front of the lens.

Fig. 4 is a schematic diagram of the buckle connection between the utility model and the lens.

Fig. 5 is a schematic diagram of the utility model being buckled on the lens.

【detailed description】

Below in conjunction with accompanying drawing, the embodiment of the present utility model is described in detail.

As shown in Figure 1 and Figure 2, a lens protection front cover of the present invention includes a cylindrical front cover shell 1 with one side open and made of elastic thin plastic material, the front cover shell 1 can be made of Made of PET or PVC material, the inner side wall of the front cover housing 1 is provided with a limit boss 2 along the circumferential direction, the inner edge of the front cover housing 1 is provided with a buckle convex ring 3 along the circumferential direction, the inner side of the front cover housing 1 The bottom is provided with avoidance cavity 4. When buckled, through elastic deformation, the buckle convex ring 3 firmly clamps the lens 6 in the front cover housing 1; The bottom surface of the front cover housing 1 is provided with an escape cavity 4, so that the bottom of the front cover housing 1 remains in a non-contact state with the front side of the lens 6 when the front cover housing 1 is deformed, which is beneficial to protect the lens 6.

In order to make the fastening smooth, an exhaust groove 5 is arranged on the inner side wall of the front cover housing 1 along the axial direction, and the air in the front cover housing 1 can be effectively discharged through the exhaust groove 5, thereby further ensuring fastening. The connection is firm, and at the same time, the problem of inconvenient disassembly due to negative pressure generated during disassembly is avoided; in this embodiment, three exhaust grooves 5 are evenly arranged along the circumferential direction.

In this embodiment, in order to balance the force, three limiting bosses 2 are evenly distributed along the circumferential direction; three snap rings 3 are evenly distributed along the circumferential direction; , and the other end extends to the edge of the front cover housing 1 .

When the utility model is used to fasten the lens 6, as shown in Fig. 3 to Fig. 5, when the buckle is fastened, the buckle convex ring 3 is deformed, and the lens 6 is pressed into the middle position of the front cover shell 1, during the pressing process In the process, the air in the front cover housing 1 is exhausted through the exhaust groove 5 . When the lens 6 is continued to be pressed in until the edge of the front side of the lens 6 touches the limit boss 2, the buckling action is completed.

Claims (6)

1. a lens protection protecgulum; that it is characterized in that comprising the side opening be made up of elasticity plastic uptake material and protecgulum housing (1) cylindrically; described protecgulum housing (1) madial wall is circumferentially provided with positive stop lug boss (2); described protecgulum housing (1) inside edge is circumferentially provided with buckle bulge loop (3), and described protecgulum housing (1) inside bottom is provided with dodges cavity (4).

2. a kind of lens protection protecgulum according to claim 1, is characterized in that described protecgulum housing (1) madial wall is provided with air discharge duct (5) vertically.

3. a kind of lens protection protecgulum according to claim 1 or 2, is characterized in that described positive stop lug boss (2) is circumferentially laid with three.

4. a kind of lens protection protecgulum according to claim 1 or 2, is characterized in that described buckle bulge loop (3) is circumferentially laid with three.

5. a kind of lens protection protecgulum according to claim 2, it is characterized in that described air discharge duct (5) one end extends to protecgulum housing (1) bottom, the other end extends to protecgulum housing (1) edge.

6. a kind of lens protection protecgulum according to claim 5, is characterized in that described air discharge duct (5) is circumferentially laid with three.