Stepped conical nut fastener
A technology of fasteners and steps, which is applied in the field of step cone nut fasteners, can solve the problems that bolts and expansion sleeves can only stay on the attachments, unfavorable installation of fastened objects, waste of materials, etc., and achieve strong adhesion , good versatility, and the effect of improving the safety factor
Inactive Publication Date: 2014-07-23
欧卉
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Problems solved by technology
[0002] The common connection fasteners of expansion screws include nuts, cone heads, and bolts. The nuts are placed outside the attachment. The cone head of the bolt is easy to be pulled out of the attachment and the thread end of the bolt will be pulled out more and more, which is extremely unsightly. And the end where the bolt is pulled out is actually a waste of material
When the existing expansion screw connection fasteners are used, the bolts and expansion sleeves must first be placed in the inner hole of the attachment, which is not conducive to the installation of the fastened object
Especially after the existing expansion screws are used, the bolts and expansion sleeves can only be left on the attachments, which is wasteful and unsightly
Method used
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[0009] The stepped cone female fastener of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0010] Referring to the accompanying drawings, the stepped cone female fastener of this embodiment is made of metal, and the stepped cone female fastener includes a stepped cone nut 1, an expansion sleeve 2 and a bolt 3, and the stepped cone nut 1 is provided with The inner thread has a step at one end to strengthen the adhesion, and the other end is tapered; the stepped conical nut 1 is connected to the inner hole of the expansion sleeve 2, and the bolt 3 passes through the inner hole of the expansion sleeve 2 and the stepped conical The inner thread of the conical end of the nut 1 is butted, and by rotating the bolt 1, the stepped conical nut 1 translates to the inner wall of the expansion sleeve. Peripheral wall, to achieve fastening connections.
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The invention discloses a stepped conical nut fastener which comprises a stepped conical nut (1), an expansion sleeve (2) and a bolt (3). The stepped conical nut (1) is provided with internal threads. One end of the stepped conical nut (1) is provided with steps which play a role in strengthening adhesive force. The other end of the stepped conical nut (1) is of a conical shape. The stepped conical nut (1) is in butt joint with an inner hole of the expansion sleeve (2). The bolt (3) penetrates through the inner hole of the expansion sleeve (2) to be in butt joint with the internal threads at the conical end of the stepped conical nut (1). By rotating the bolt (3), the stepped conical nut (1) moves horizontally towards the wall of the expansion sleeve, a bevel of the stepped conical nut (1) enables the expansion sleeve to expand in an interference mode and be tensioned on the circumferential wall of the inner hole of an attachment, and then a connecting object is fastened. The stepped conical nut fastener has the advantages of being good in universality, high in adhesive force, attractive, capable of saving materials and facilitating fastening and installation, and safe in use.
Description
technical field [0001] The invention relates to a connecting fastener, in particular to a stepped cone female fastener with enhanced tensile force and more generality. Background technique [0002] The common connection fasteners of expansion screws include nuts, cone heads, and bolts. The nuts are placed outside the attachment. The cone head of the bolt is easy to be pulled out of the attachment and the thread end of the bolt will be pulled out more and more, which is extremely unsightly. And the end where the bolt is pulled out is actually a waste of material. When the existing expansion screw connection fastener is used, the bolt and the expansion sleeve must first be placed in the inner hole of the attachment, which is not conducive to the installation of the fastened object. Especially after the existing expansion screws are used, the bolts and expansion sleeves can only be left on the attachments, which is wasteful and unattractive. Contents of the invention [000...
Claims
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IPC IPC(8): F16B13/06F16B37/00
Inventor 欧卉
Owner 欧卉
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