CN211115664U

CN211115664U - Self-locking anti-dismantling cat eye

Info

Publication number: CN211115664U
Application number: CN201921720177.3U
Authority: CN
Inventors: 麻振委
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-07-28
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to a self-locking anti-dismantling cat eye, which comprises a lens body and a locking body, wherein the lens body is arranged at the outer side of a door, the locking body is arranged at the inner side of the door, the lens body and the locking body penetrate through a cat eye mounting hole of the door, and the lens body comprises a lens tube, a focusing convex lens, a focusing sleeve, a focusing concave lens, a front convex lens gasket, a front convex lens, a picture frame and a self-locking spring piece; the lens tube is of an external thread structure; a focusing convex lens, a focusing sleeve and a focusing concave lens are arranged in the lens tube to focus an image; the front part of the lens tube is provided with a front convex lens gasket, a front convex lens and a lens frame so as to increase the visual wide angle; the back of the lens tube is provided with an axial clamping groove. The utility model is suitable for a burglary-resisting door has design science, rational in infrastructure, low cost, self-locking performance height, prevents the advantage that the effect of unscrewing is showing.

Description

Self-locking anti-dismantling cat eye

Technical Field

The utility model belongs to door and window hardware fitting, it is specific that the inside and outside separation of burglary-resisting door prevents unscrewing cat eye device from locking-type.

Background

The anti-unscrewing device of the internal and external separation type cat eye of a common anti-theft door on the market is locked by a locking rod or a gear. The disadvantages are that: the locking rod locking device can insert the locking rod pin only by aligning the locking grooves of the internal thread and the external thread, and the insertion of the locking rod pin into the locking groove in the limited space of the cat eye device is difficult and difficult to install; the gear locking device is composed of a gear, a spring, a gear guide groove, a gasket and the like, so that the meshing and the rotation prevention of the gear can be realized, the number of parts is large, the installation steps are complicated, and the installation is difficult; when using locking rod locking device and gear locking device, if there is the deviation in door plant thickness, probably appear to aim at the locking groove or aim at the condition such as still not locking the cat eye behind the gear, make the cat eye not hard up, influence the result of use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, provide one kind from locking-type and prevent tearing open cat eye, should prevent tearing open cat eye from locking-type has design science, rational in infrastructure, low cost, self-locking performance height, prevent the characteristics that the effect is showing of unscrewing.

The purpose of the utility model is realized through the following technical scheme: from anti-dismantling cat eye of locking-type, constitute its characterized in that by the camera lens body with locking body: the lens body is arranged on the outer side of the door, the locking body is arranged on the inner side of the door, the lens body and the locking body penetrate through a cat eye mounting hole of the door, and the lens body consists of a lens tube, a focusing convex lens, a focusing sleeve, a focusing concave lens, a front convex lens gasket, a front convex lens, a lens frame and a self-locking spring piece; the lens tube is of an external thread structure; a focusing convex lens, a focusing sleeve and a focusing concave lens are arranged in the lens tube to focus an image; the front part of the lens tube is provided with a front convex lens gasket, a front convex lens and a lens frame so as to increase the visual wide angle; the rear part of the lens tube is provided with an axial clamping groove, the circular arc part of the self-locking spring piece is sleeved in the inner hole of the lens tube, and the elastic piece part of the self-locking spring piece is clamped in the clamping groove of the lens tube, so that the external thread tooth socket at the clamping groove part is filled by the elastic piece of the self-locking spring piece; the locking body comprises locking pipe, back lid rivet, back lid handle. The locking pipe is of an internal thread structure; the rear cover and the locking pipe are connected into a whole through a rear cover rivet, and a rear cover handle is arranged on the rear cover, so that the rear cover can be turned over to allow an indoor person to view cat eye images; the internal thread part of the locking pipe is provided with a plurality of axial self-locking grooves which are ratchet-shaped and form a one-way locking shape.

When the lens body and the locking body are screwed tightly, the elastic sheet of the self-locking spring sheet is pressed into the thread root by the inclined surface of the self-locking groove of the locking pipe, so that the elastic sheet can be meshed; if the locking pipe is reversely unscrewed after being engaged, the backstop plane of the self-locking groove of the locking pipe interferes with the elastic sheet of the self-locking spring sheet, so that the locking pipe cannot be unscrewed.

The utility model has the advantages that the self-locking anti-unscrewing device is arranged at the thread locking part through thread locking, and the locking part can not be unscrewed from the outside, thereby achieving the anti-theft effect; the self-locking spring piece is arranged at the external thread part of the lens body, the spring piece part of the self-locking spring piece is clamped into the thread clamping groove to fill the thread, if external force action exists, the elastic action of the self-locking spring piece can be pressed into the thread root, and the self-locking spring piece can reset after the external force action disappears; a plurality of self-locking grooves are processed in the internal thread of the locking body, the self-locking grooves are in a ratchet shape and form a one-way locking shape, and each self-locking groove consists of an inclined plane for screwing and extruding a spring, a plane for reverse stopping and a groove; when screwing, the self-locking spring piece is pressed into the thread root by the inclined surface of the self-locking groove, so that the self-locking spring piece can be meshed; if the self-locking groove is unscrewed reversely, the backstop plane of the self-locking groove interferes with the reset self-locking spring leaf elastic sheet, so that the self-locking spring leaf elastic sheet cannot be unscrewed; the self-locking anti-unscrewing cat eye device is convenient to install, when a cat eye is installed, only the separated lens body and the locking body are required to be screwed to clamp the door plate, the self-locking spring piece achieves a self-locking state, and the anti-unscrewing effect is obvious.

Drawings

Fig. 1 is a schematic view of the external structure of the present invention;

FIG. 2 is a schematic view of the overall assembly of the present invention;

fig. 3 is an internal structure display diagram of the present invention;

fig. 4 is a cross-sectional view of the lens body and the locking body of the present invention after assembly;

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): referring to the attached

drawings

1, 2, 3 and 4, the self-locking anti-dismantling cat eye consists of a lens body 1 and a locking body 2, wherein the lens body 1 is arranged on the outer side of a door, the locking body 2 is arranged on the inner side of the door, the lens body 1 and the locking body 2 penetrate through a cat eye mounting hole of the door, and the lens body 1 consists of a lens tube 1.1, a focusing convex lens 1.2, a focusing sleeve 1.3, a focusing concave lens 1.4, a front convex lens gasket 1.5, a front convex lens 1.6, a mirror frame 1.7 and a self-locking spring piece 1.8; the lens tube 1.1 is of an external thread structure; a focusing convex lens 1.2, a focusing sleeve 1.3 and a focusing concave lens 1.4 are arranged in the lens tube 1.1 to focus an image; the front part of the lens tube 1.1 is provided with a front convex lens gasket 1.5, a front convex lens 1.6 and a lens frame 1.7 so as to increase the visual wide angle; an axial clamping groove is processed at the rear part of the lens tube 1.1, the arc part of the self-locking spring piece 1.8 is sleeved in an inner hole of the lens tube 1.1, and the elastic piece part of the self-locking spring piece 1.8 is clamped in the clamping groove of the lens tube 1.1, so that the external thread tooth socket at the clamping groove part is filled by the elastic piece of the self-locking spring piece 1.8; the locking body 2 consists of a locking pipe 2.1, a rear cover 2.2, a rear cover rivet 2.3 and a rear cover handle 2.4; the locking pipe 2.1 is of an internal thread structure; the rear cover 2.2 and the locking pipe 2.1 are connected into a whole through a rear cover rivet 2.3, and a rear cover handle 2.4 is arranged on the rear cover 2.2, so that the rear cover 2.2 can be turned over to allow an operator in the door to view cat eye images; a plurality of axial self-locking grooves are processed at the internal thread part of the locking pipe 2.1, and the self-locking grooves are in ratchet shapes to form a one-way locking shape; when the lens body 1 and the locking body 2 are screwed tightly, the elastic sheet of the self-locking spring sheet 1.8 is pressed into the thread root by the inclined surface of the self-locking groove of the locking pipe 2.1 so as to be meshed; if the locking pipe is reversely unscrewed after being engaged, the retaining plane of the self-locking groove of the locking pipe 2.1 interferes with the elastic sheet of the self-locking spring sheet 1.8, so that the locking pipe cannot be unscrewed.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. The utility model provides a prevent tearing open cat eye from locking-type, comprises lens body (1) and locking body (2), its characterized in that: the lens body (1) is arranged on the outer side of a door, the locking body (2) is arranged on the inner side of the door, the lens body (1) and the locking body (2) penetrate through a cat eye mounting hole of the door, and the lens body (1) consists of a lens tube (1.1), a focusing convex lens (1.2), a focusing sleeve (1.3), a focusing concave lens (1.4), a front convex lens gasket (1.5), a front convex lens (1.6), a lens frame (1.7) and a self-locking spring piece (1.8); the lens tube (1.1) is of an external thread structure; a focusing convex lens (1.2), a focusing sleeve (1.3) and a focusing concave lens (1.4) are arranged in the lens tube (1.1) to focus an image; a front convex lens gasket (1.5), a front convex lens (1.6) and a lens frame (1.7) are arranged at the front part of the lens tube (1.1) so as to increase the visual wide angle; an axial clamping groove is processed at the rear part of the lens tube (1.1), the arc part of the self-locking spring piece (1.8) is sleeved in the inner hole of the lens tube (1.1), and the elastic piece part of the self-locking spring piece (1.8) is clamped in the clamping groove of the lens tube (1.1), so that the elastic piece of the self-locking spring piece (1.8) fills the external thread tooth socket of the clamping groove part; the locking body (2) consists of a locking pipe (2.1), a rear cover (2.2), a rear cover rivet (2.3) and a rear cover handle (2.4); the locking pipe (2.1) is of an internal thread structure; the rear cover (2.2) and the locking pipe (2.1) are connected into a whole through a rear cover rivet (2.3), a rear cover handle (2.4) is installed on the rear cover (2.2), and the rear cover (2.2) can be turned over to allow a person in the door to view cat eye images; the internal thread part of the locking pipe (2.1) is provided with a plurality of axial self-locking grooves which are ratchet-shaped and form a one-way locking shape.

2. The self-locking tamper-evident cat eye according to claim 1, wherein: when the lens body (1) and the locking body (2) are screwed tightly, the elastic sheet of the self-locking spring sheet (1.8) is pressed into the thread root by the inclined surface of the self-locking groove of the locking pipe (2.1) so as to be meshed; if the locking pipe is reversely unscrewed after being engaged, the backstop plane of the self-locking groove of the locking pipe (2.1) interferes with the elastic sheet of the self-locking spring sheet (1.8) to ensure that the self-locking spring sheet cannot be unscrewed.