CN209765189U

CN209765189U - Burr-free hinge

Info

Publication number: CN209765189U
Application number: CN201920845811.XU
Authority: CN
Inventors: 林海静
Original assignee: ZHEJIANG KANGHUA GLASSES CO Ltd
Current assignee: ZHEJIANG KANGHUA GLASSES CO Ltd
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2019-12-10
Anticipated expiration: 2029-06-05

Abstract

The utility model provides a no burr hinge belongs to glasses accessory field. It has solved the inconvenient problem of current hinge processing. The burr-free hinge comprises a body, wherein the body comprises two convex blocks which are arranged in parallel, a movable groove for rotating a connecting piece is formed between the two convex blocks, a hinge hole which is opposite to the movable groove is formed in each convex block, the bottom wall of each movable groove is an inclined plane, a concave chip breaker groove is formed in the bottom surface of the body, the body and the chip breaker groove are formed in one step in a cold extrusion mode, the chip breaker grooves are strip-shaped and penetrate through the two convex blocks in the distribution direction, and the chip breaker grooves penetrate through the movable grooves; the chip breaker comprises a first side face which is strip-shaped and is used for connecting the bottom face of the body with the inclined face, the bottom face of the body is connected with the inclined face through the first side face, and an included angle between the bottom face of the body and the first side face and an included angle between the inclined face and the first side face are obtuse angles. This no burr hinge has the convenient advantage of processing.

Description

Burr-free hinge

Technical Field

The utility model belongs to glasses accessory field relates to a hinge, especially a no burr hinge.

Background

In existing eyeglasses, hinges are used to connect the temples to the front of the frame so that the eyeglasses can be folded when not in use.

The existing hinge is like a glasses hinge disclosed in chinese patent library [ application number: 201010231284.7 the glasses comprise a single piece assembly, a double piece assembly, a nylon assembly and a bolt, wherein one end of the single piece assembly is connected with the glasses legs, the other end of the single piece assembly is provided with a single piece, one end of the double piece assembly is connected with the glasses frame, the other end of the double piece assembly is provided with an upper piece and a lower piece which are arranged in parallel up and down, through holes which are mutually matched are arranged at corresponding positions of the single piece, the upper piece and the lower piece, the bolt comprises a pin cover and a pin column which are arranged up and down, the lower end of the pin column is also provided with a flange, the diameter of the cross section of the flange is larger than that of the through hole, the central position of the pin column is provided with a slot which is arranged up and down, the single piece assembly is hinged with the double piece assembly; one end of the double-piece component is connected with the glasses frame, the other end of the double-piece component is provided with an upper piece and a lower piece, and the upper piece and the lower piece are arranged in parallel; form between last piece and the lower piece and supply connecting piece pivoted movable groove, the diapire in movable groove is the inclined plane, and the inclined plane links to each other with the diapire of biplate subassembly and the contained angle between the two is the acute angle.

When the biplate subassembly is processed, because the existence of acute angle, when milling the work piece and finishing, can remain partial surplus and can not get rid of by the cutter completely, leave great burr, lead to follow-up a set of burring processes that need increase, the operation is comparatively loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a no burr hinge, the technical problem of solution is how to make things convenient for processing.

The purpose of the utility model can be realized by the following technical proposal: a kind of no burr hinge, including the body, the body includes two lugs set up side by side, form the movable slot for the link to rotate between two lugs, and there are hinge holes opposite to movable slot on the lug, the bottom wall of the said movable slot is a slope, characterized by that, the bottom surface of the said body has chip breakers of the indent, and body and chip breaker are processed and shaped by the cold extrusion mode once, the said chip breaker is strip and run through and set up along the distribution direction of two lugs, and the chip breaker crosses the said movable slot; the chip breaker comprises a first side face which is strip-shaped and is used for connecting the bottom face of the body with the inclined face, the bottom face of the body is connected with the inclined face through the first side face, and an included angle between the bottom face of the body and the first side face and an included angle between the inclined face and the first side face are obtuse angles.

The chip breaker is arranged on the bottom surface of the body, the chip breaker and the body are formed in a one-step machining mode, one first side face used for connecting the bottom surface of the body and the inclined plane is added between the bottom surface of the body and the inclined plane, acute angle connection in the prior art is changed into two sections of obtuse angle connection, cutting dead angles of a cutter are effectively reduced, machining allowance left after cutting is effectively reduced, burrs are effectively avoided, in this way, when in actual machining, a deburring process is not needed to be added subsequently, and machining is convenient.

In the burr-free hinge, the cross sections of the two ends of the chip breaker groove are triangular. Adopt the triangle-shaped structure, can strengthen the intensity of body diapire department, improve the structural stability of body.

In the burr-free hinge, the cross sections of the two ends of the chip breaker groove are in acute triangle shapes.

Compared with the prior art, the burr-free hinge is characterized in that the chip breaker groove is formed in the bottom surface of the body, the chip breaker groove and the body are formed in a one-step machining mode, one first side surface used for connecting the bottom surface of the body and the inclined surface is additionally arranged between the bottom surface of the body and the inclined surface, acute angle connection in the prior art is changed into two sections of obtuse angle connection, dead angles of cutting of a cutter are effectively reduced, machining allowance left after cutting is effectively reduced, burrs are effectively avoided, a subsequent deburring process is not needed during actual machining, and machining is convenient.

Drawings

Fig. 1 is a perspective view of the burr-free hinge.

Fig. 2 is a schematic view of the structure of the breaker groove.

Fig. 3 is a schematic cross-sectional view of the burr-free hinge.

In the figure, 1, a body; 1a, a bump; 1b, a movable groove; 1c, a hinge hole; 1d, an inclined plane; 1e, a chip breaker groove; 1e1, first side; 1e2, second side.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the burr-free hinge comprises a body 1, wherein the body 1 comprises two parallel convex blocks 1a, a movable groove 1b for the rotation of the connecting piece is formed between the two convex blocks 1a, a hinge hole 1c opposite to the movable groove 1b is arranged on the convex block 1a, and the axis of the hinge hole 1c extends along the distribution direction of the two convex blocks 1 a. In this embodiment, one of the hinge holes 1c is a through hole, and the other hinge hole 1c is a threaded hole provided therethrough. The bottom wall of the movable groove 1b is an inclined surface 1d, and as shown in fig. 1, the inclined surface 1d is arranged obliquely downward.

Specifically, as shown in fig. 2, the bottom surface of the body 1 has a concave chip breaker 1e, and the body 1 and the chip breaker 1e are formed by one-step processing in a cold extrusion manner. The chip breaker groove 1e is strip-shaped and penetrates along the distribution direction of the two convex blocks 1a, the chip breaker groove 1e penetrates through the movable groove 1b, and at the moment, two ends of the chip breaker groove 1e are respectively positioned on two side surfaces of the body 1 distributed along the two convex blocks 1 a.

As shown in fig. 1, both ends of the chip breaker 1e have triangular cross-sections, and preferably both ends of the chip breaker 1e have acute triangular cross-sections. Further, as shown in fig. 2 and 3, the chip breaker 1e is composed of a second side surface 1e2 and a first side surface 1e1 which is strip-shaped and is used for connecting the bottom surface of the body 1 and the inclined surface 1d, wherein the bottom surface of the body 1 and the inclined surface 1d are connected through the first side surface 1e1, and the included angle between the bottom surface of the body 1 and the first side surface 1e1 and the included angle between the inclined surface 1d and the first side surface 1e1 are obtuse angles.

Set up chip breaker 1e on body 1 bottom surface, and chip breaker 1e and body 1 one-time processing shaping to increase one section between body 1 bottom surface and inclined plane 1d and be used for connecting first side 1e1 between them, make the acute angle connection among the prior art change into two sections obtuse angle connections, with effectively reducing cutter cutting dead angles, thereby effectively reduce the remaining processing allowance after the cutting, with effectively avoiding the burr to produce, when actually processing like this, just need not follow-up one more burring processes, it is comparatively convenient to process.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A burr-free hinge comprises a body (1), wherein the body (1) comprises two lugs (1a) which are arranged in parallel, a movable groove (1b) for a connecting piece to rotate is formed between the two lugs (1a), a hinge hole (1c) which is right opposite to the movable groove (1b) is formed in the lug (1a), and the bottom wall of the movable groove (1b) is an inclined plane (1d), and the burr-free hinge is characterized in that a chip breaker groove (1e) which is concave is formed in the bottom surface of the body (1), the body (1) and the chip breaker groove (1e) are formed in a cold extrusion mode in one step, the chip breaker groove (1e) is strip-shaped and penetrates through the two lugs (1a) in the distribution direction, and the chip breaker groove (1e) penetrates through the movable groove (1 b); the chip breaker groove (1e) comprises a first side surface (1e1) which is strip-shaped and is used for connecting the bottom surface of the body (1) and the inclined surface (1d), the bottom surface of the body (1) is connected with the inclined surface (1d) through the first side surface (1e1), and an included angle between the bottom surface of the body (1) and the first side surface (1e1) and an included angle between the inclined surface (1d) and the first side surface (1e1) are obtuse angles.

2. The burr-free hinge according to claim 1, characterized in that the chip breaker groove (1e) has triangular cross-sections at both ends.

3. The burr-free hinge according to claim 2, characterized in that the cross-section of both ends of the chip breaker groove (1e) is in the shape of an acute triangle.