TW201447219A - Sight and dust cap thereof - Google Patents

Abstract

A sight and a dust cap thereof are provided. The sight includes an objective barrel, an eyepiece barrel and a dust cap. The dust cap links with the objective barrel. The dust cap includes a main body, a cover, a first elastic element and a second elastic element. The cover links with the main body. The first elastic element links with the main body. The second elastic element is disposed inside the second elastic element so that the outside surface of the second elastic element contacts the inside surface of the first elastic element.

Description

Sight and dust cover

The invention relates to a sight and a dust cover thereof.

Please refer to FIG. 1A and FIG. 1B simultaneously. FIG. 1A is a schematic diagram of a conventional dust cover used for a sight, and FIG. 1B is a partial enlarged view of FIG. 1A. As shown in FIG. 1A, the dust cover 10 includes a body 11, an outer cover 13, and a first elastic member 15. The dust cover 10 is attached to the outer cylinder 22 of the sight 20 to prevent dust from entering the sight 20. The dust cover 10 is sleeved by the first elastic member 15 to the outer cylinder 22 of the sight 20 (as shown in FIG. 1B). Since the first elastic member 15 has elasticity, the outer cylinder 22 can be tightened, plus the first The friction between the elastic member 15 and the outer cylinder 22 allows the dust cover 10 to be tightly fitted to the outer cylinder 22. However, when the dust cover 10 is subjected to a large external force impact or shaking, the first elastic member 15 is easily slipped off, and the user needs to pay attention to and adjust the dust cover 10 from time to time to prevent the dust cover 10 from coming off. Although the amount of interference between the first elastic member 15 and the outer cartridge 22 can be increased, the tightening force of the first elastic member 15 and the frictional force with the outer cartridge 22 can be increased to withstand greater external impact or shaking. Still not loose, however, the thickness or length of the opposing first elastic member 15 must be increased. The thickened or growing first elastic member 15 tends to cause the sight 10 to interfere with other articles when it is assembled, affecting the user's use. On the other hand, when the first elastic member 15 is thickened or increased, its volume is increased, and the amount of deformation thereof is also increased, which may cause the dust cover 10 to deviate from the normal position.

In view of the above, in order to solve the above problems, the present invention provides a sight and a dust cover thereof, which can prevent the dust cover from slipping off and ensure the function of the dust cover without increasing the thickness or length of the original first elastic member.

The dust cover of the present invention comprises a body, an outer cover and a first elasticity Element and a second elastic element. The outer cover is coupled to the body. The first elastic element is coupled to the body. The second resilient member is disposed within the first resilient member such that the outer surface of the second resilient member contacts the inner surface of the first resilient member.

Wherein, the inner surface of the second elastic member may further comprise a protrusion protruding from the inner surface of the second elastic member.

Wherein, the second elastic element has an arc shape and includes an opening.

The first elastic element is made of rubber material or silicone material.

The second elastic component is made of a plastic material.

The sight of the present invention comprises a foreign product cylinder, an eyepiece cylinder and a dust cover. The dust cover is connected to the outer cylinder.

Wherein, the second elastic element is tightened to the outer cylinder, and the first elastic element is further sheathed to the outer cylinder and the second elastic element.

The surface of the outer cylinder further includes a groove, and the inner surface of the second elastic member further includes a protrusion, and the protrusion is inserted into the groove.

Wherein, the groove is a V-shaped groove, a U-shaped groove, or a square groove.

The second elastic component is made of a plastic material.

The above described objects, features, and advantages of the invention will be apparent from the description and appended claims

10, 30‧‧‧ dust cover

11, 31‧‧‧ ontology

13, 33‧‧‧ Cover

331‧‧‧First shaft

15, 35‧‧‧ first elastic element

37‧‧‧Second elastic element

371‧‧‧ protrusions

20‧‧‧Sight

22‧‧‧External cartridge

24‧‧‧Contact tube

221‧‧‧V-groove

Figure 1A is a schematic view of a conventional dust cover for use with a sight.

Fig. 1B is a partial enlarged view of Fig. 1A.

Fig. 2 is an exploded view of the dust cover according to an embodiment of the present invention.

Fig. 3A is a schematic view of a dust cover used in a sight according to an embodiment of the present invention.

Fig. 3B is a partial enlarged view of Fig. 3A.

Please refer to FIG. 2, which is an exploded view of the dust cover according to an embodiment of the present invention. As shown in the figure, the dust cover 30 includes a body 31 and an outer portion. The cover 33, a first elastic member 35 and a second elastic member 37. The outer cover 33 includes a first projecting shaft 331 and a second projecting shaft (not shown). The inner surface of the second elastic member 37 includes a protrusion 371 that protrudes from the inner surface of the second elastic member 37.

The first elastic member 35 is made of rubber or silicone rubber and has elasticity. When it is subjected to an external force, it can be stretched, and the external force is released and then returned to its original state. The body 31 is fixedly coupled to the first elastic member 35. The outer cover 33 is connected to the main body 31 via the first protruding shaft 331 and the second protruding shaft, and the outer cover 33 is pivoted about the first protruding shaft 331 and the second protruding shaft, so that the outer cover 33 is selectively covered on the body 31 according to the use condition. Or not covering the body 31. The second elastic member 37 has an opening at the bottom of the arc shape, and is made of a plastic material to have elasticity. When the external force is applied near the opening, the opening can be opened. After the external force is released, the opening is restored to the original state, and the second elastic member 37 is placed first. The inside of the elastic member 35 brings the outer surface of the second elastic member 37 into contact with the inner surface of the first elastic member 35.

Please refer to FIG. 3A and FIG. 3B simultaneously. FIG. 3A is a schematic view of the dust cover used in the present invention according to the present invention, and FIG. 3B is a partial enlarged view of FIG. 3A. As shown in FIG. 3A, the dust cover 30 covers the outer cylinder 22 of the sight 20, and when the sight 20 is used, the outer cover 33 is opened so as not to cover the body 31, and the user closes the eye to the eyepiece 24 Aiming at the target, when the sight 30 is not used, closing the outer cover 33 to cover the body 31 prevents dust from entering the sight 20. The dust cover 30 is sleeved by the first elastic member 35 and the second elastic member 37 to the outer cylinder 22 of the sight 20 (as shown in FIG. 3B ), and the outer cylinder 22 includes a V-shaped groove 221 and a second elastic member 37 . The protrusion 371 is inserted into the V-shaped groove 221 such that the second elastic member 37 is held by the V-shaped groove 221 to the outer tube 22, and in addition, since the second elastic member 37 has elasticity, the second elastic member 37 is bundled. Close to the outer cylinder 22. The first elastic member 35 is further sleeved against the outer cylinder 22 and the second elastic member 37. The first elastic member 35 is pressed against the outer cylinder 22 and the second elastic member 37, and a reaction force is generated to compress the outer surface. The barrel 22 and the second elastic member 37 are configured to tighten the first elastic member 35 and the second elastic member 37 to the outer cylinder 22. Unless the dust cover 30 is subjected to a strong external force, it is not easy to fall off.

It can be understood that the V-shaped slot 221 in the above embodiment can also be used. Other shapes of grooves, such as U-shaped grooves, square grooves, etc., are also within the scope of the present invention.

Although the present invention has been described above in terms of the preferred embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

30‧‧‧Dust cover

31‧‧‧Ontology

33‧‧‧ Cover

331‧‧‧First shaft

35‧‧‧First elastic element

37‧‧‧Second elastic element

371‧‧‧ protrusions

Claims (10)

A dust cover comprising: a body; an outer cover, the outer cover is coupled to the body; a first elastic member, the first elastic member is coupled to the body; and a second elastic member, the second elastic member is disposed In the first elastic member, the outer surface of the second elastic member is brought into contact with the inner surface of the first elastic member. The dust cover of claim 1, wherein the inner surface of the second elastic member further comprises a protrusion protruding from an inner surface of the second elastic member. The dust cover of claim 1, wherein the second elastic member has an arc shape and includes an opening. The dust cover of claim 1, wherein the first elastic member is made of a rubber material or a silicone material. The dust cover of claim 1, wherein the second elastic member is made of a plastic material. A sight comprising: a foreign cartridge: an eyelet; and a dust cover according to claim 1, wherein the dust cover is coupled to the outer cartridge. The sight of claim 6, wherein the second elastic member is tightened to the outer cylinder, and the first elastic member reinserts the outer cylinder and the second elastic member. The sight of the sixth aspect of the invention, wherein the surface of the outer cylinder further comprises a groove, and the inner surface of the second elastic member further comprises a protrusion into which the protrusion is inserted. The sight of claim 8, wherein the groove is a V-shaped groove, a U-shaped groove, or a square groove. The sight of claim 6, wherein the second elastic member is made of a plastic material.