CN201475122U - Adjustable special-shaped bolt - Google Patents

Abstract

An adjustable special-shaped bolt comprises a bolt head and a bolt rod, wherein a square platform is arranged between the bolt head and the bolt rod, the intermediate portion of the bolt head is rectangular, and the two lateral cross sections of the bolt head are arc-shaped, thereby providing the adjustable special-shaped bolt which is convenient for installation and laborsaving.

Description

Adjustable heterotypic bolt

Technical field

The utility model relates to a kind of fastening piece, particularly a kind of adjustable heterotypic bolt.

Background technique

Plain bolt and need two spanners to use simultaneously when tight, need when mounted from the hole, to pass installation from the back side of workpiece, time-consuming and install inconvenient.

The model utility content

At the defective of above-mentioned prior art, the purpose of this utility model provides a kind of easy for installation, adjustable heterotypic bolt in labour-saving.

For achieving the above object, the utility model adopts following technological scheme:

A kind of adjustable heterotypic bolt comprises bolt head and bolt shank, and square side's platform is set between described bolt head and the described bolt shank, is rectangular in the middle of the described bolt head, and the cross section of both sides is an arc.

Owing to be provided with square side's platform, make bolt only need a spanner just can and tight, and the centre of bolt head is rectangular, the cross section of both sides is an arc, can install from the front of workpiece, makes quick and easy for installation saving labor, and has improved working efficiency.

Description of drawings

Fig. 1 is the plan view of the utility model bolt;

Fig. 2 is the plan view of Fig. 1.

Embodiment

Be elaborated below in conjunction with the mode of execution of accompanying drawing to the adjustable heterotypic bolt of the utility model.

Referring to Fig. 1, Fig. 2, a kind of adjustable heterotypic bolt comprises bolt head 2 and bolt shank 3, and square side's platform 1 is set between bolt head 2 and the bolt shank 3, and square side's platform 1 plays the effect of anti-rotation self-locking; In the middle of the bolt head 2 is rectangular, and the cross section of both sides is an arc.

And bolt adopts the stainless steel cold-heading to make with extra care and forms, and surface finish is processed into silvery white, the outward appearance light.

Owing to be provided with square side's platform 1, make bolt only need a spanner just can and tight, and be rectangular in the middle of the bolt head 2, the cross section of both sides is an arc, can install from the front of workpiece, from the workpiece front bolt head is passed when promptly installing, bolt is revolved turn 90 degrees then, prevent that bolt head from passing from the hole of workpiece, bolt on then and get final product, making quick and easy for installation saving labor, improved working efficiency greatly, is the first-selected bolt of curtain wall suspension member fastening piece.

Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in related domain make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.

Claims (1)

1. an adjustable heterotypic bolt comprises bolt head (2) and bolt shank (3), it is characterized in that, between described bolt head (2) and the described bolt shank (3) square side's platform (1) is set, and is rectangular in the middle of the described bolt head (2), and the cross section of both sides is an arc.

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