CN210013902U - Screw countersunk device for sheet metal connection - Google Patents

Abstract

The utility model discloses a screw countersunk head device for sheet metal connection, including special-shaped screw and first nut, special-shaped screw comprises the flange and the double-screw bolt of disc, and the double-screw bolt setting is at the terminal surface of flange and the two is coaxial, is provided with the counter sink that link up at the middle part of the two, and the double-screw bolt surface is cut off four breachs along the axis direction and forms four locking que, and each locking que plane equals and two adjacent locking que plane mutually perpendicular to the distance of double-screw bolt axis. The utility model discloses, simple structure, it is convenient to make for when the sheet metal connection, the panel beating surface is succinct pleasing to the eye.

Description

Screw countersunk device for sheet metal connection

Technical Field

The utility model belongs to the technical field of the connecting piece, specificly relate to a screw countersunk head device for sheet metal connection.

Background

In the mechanical manufacturing trade, especially the sheet metal manufacturing field, often need install a panel beating with the screw on another panel beating or other parts, current connection structure usually has two kinds of modes: firstly, the screw head is directly exposed on the surface of the metal plate, and the way can cause the surface of the metal plate to be unattractive; secondly, the metal plate is provided with the inner counter bore, and then the screw head is sunk into the metal plate, so that the connection mode is attractive, but the inner counter bore is troublesome to manufacture on the metal plate. Therefore, it is necessary to design a sheet metal connecting device which is beautiful and convenient to manufacture.

Disclosure of Invention

The utility model aims at providing a countersunk screw head device for sheet metal connection, the device make conveniently, and simple to use for when sheet metal connection, the panel beating surface is succinct pleasing to the eye.

In order to realize the technical purpose, the utility model discloses a technical scheme is: the utility model provides a screw countersunk head device for sheet metal connection, includes special-shaped screw and first nut, special-shaped screw comprises the flange and the double-screw bolt of disc, and the double-screw bolt setting is coaxial at the terminal surface of flange and the two, is provided with the counter bore that link up in the middle part of the two, and four breachs are cut off along the axis direction to the double-screw bolt surface and four locking threshold are formed, and each locking threshold plane equals and two adjacent locking threshold planes mutually perpendicular to the distance of double-screw bolt axis.

The utility model has the advantages that: the screw countersunk head device for the sheet metal connection is convenient to manufacture and simple to use, and when the screw countersunk head device is used for sheet metal connection, the surface of a sheet metal is simple and attractive.

Drawings

Fig. 1 is the utility model relates to a countersunk screw device three-dimensional structure schematic diagram for sheet metal connection.

Fig. 2 is the utility model relates to a sheet metal connection is with screw countersunk head device user state schematic diagram.

In the figure, 1, a special-shaped screw; 101. a flange; 102. a stud; 103. a countersunk hole; 104. a stopping threshold; 2. a first nut; 3. a first metal plate; 4. a second metal plate; 401. a second nut; 5. and (4) screws.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the screw countersunk device for sheet metal connection comprises a special-shaped screw 1 and a first nut 2, wherein the special-shaped screw 1 consists of a disc-shaped flange 101 and a stud 102, the stud 102 is arranged on the end surface of the flange 101 and is coaxial with the flange 101, a through countersunk hole 103 is formed in the middle of the flange and the stud 102, four notches are cut in the outer surface of the stud 102 along the axial direction to form four stop thresholds 104, the distance from the plane of each stop threshold 104 to the axial line of the stud 103 is equal, and the planes of the two adjacent stop thresholds 104 are perpendicular to each other.

As shown in fig. 2, when the first metal plate 3 needs to be mounted on the second metal plate 4, firstly, a stop hole matched with the stud 102 and the brake pad 104 is formed in the first metal plate 3, then the stud 102 penetrates through the stop hole and the first metal plate 3 is clamped between the flange 101 and the first nut 2 by the first nut 2, meanwhile, the second nut 401 is welded at a corresponding position on the second metal plate 4, then the screw 5 penetrates through the countersunk hole 103 and is connected to the second nut 401 so as to connect the first metal plate 3 and the second metal plate 4 together, at the moment, the screw 5 sinks into the first metal plate 3, and the outer surface of the metal plate is attractive.

Claims (1)

1. The utility model provides a countersunk screw device for sheet metal connection which characterized in that: the special-shaped bolt comprises a special-shaped bolt (1) and a first nut (2), wherein the special-shaped bolt (1) is composed of a disc-shaped flange (101) and a circular screw bolt (102), the circular screw bolt (102) is arranged on the end face of the flange (101) and coaxial with the flange and the circular screw bolt, a through countersunk hole (103) is formed in the middle of the flange and the circular screw bolt, four notches are cut in the outer surface of the circular screw bolt (102) along the axial direction to form four stop threshold points (104), the distance from the plane of each stop threshold point (104) to the axial line of the circular screw bolt (102) is equal, and the planes of the two adjacent.

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