CN2637138Y

CN2637138Y - Folding knife

Info

Publication number: CN2637138Y
Application number: CN 03278010
Authority: CN
Inventors: 张增华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-21
Filing date: 2003-08-21
Publication date: 2004-09-01
Anticipated expiration: 2013-08-21

Abstract

The utility model relates to a folding jumping knife which comprises a blade and a knife handle; a root of the blade is articulated in one end of the knife handle by a torsion spring; the knife handle is also provided with a control button which is matched with the root of the blade; the connection position of the root of the blade is provided with a large through hole; the upper half part of the torsion spring is arranged in the large through hole; the external peripheral of the torsion spring is sleeved with a sleeve; the upper part of the sleeve is also arranged in the large through hole of the blade to form a blade rotary shaft. The utility model leads to the part height of the torsion spring is arranged in the large through hole of the blade and largely reduces the requirement installation space height, in this way, the whole thickness of the knife handle is thinned, the cutter is denser in the structure, the cutter is convenient to be carried and is more beautiful.

Description

Collapsible lifts

Technical field: the utility model relates to a kind of jack knife, particularly a kind of collapsible lifts.

Background technology: general folding lifts utilizes torsion spring to eject blade, because torsion spring needs certain number of turns that essential elastic force is just arranged, the height that is torsion spring is higher, and the junction of blade root is general also thicker, make the thickness of handle of a knife want suitable great talent to install after blade root and torsion spring are contained in the handle of a knife, the volume of cutter increases like this, can't be ultra-thin as common jack knife, inconvenience is carried, and attractive in appearance inadequately.

Summary of the invention: at the deficiencies in the prior art, the utility model provides a kind of compact conformation, the collapsible lifts of thinner thickness.

The utility model comprises blade and handle of a knife, the root of blade is hinged in the end of handle of a knife by torsion spring, also being provided with control button and blade root on the handle of a knife cooperates, the link position place of blade root is provided with large through-hole, the first half of torsion spring places large through-hole, and the periphery of torsion spring also is with sleeve, and this upper cartridge also places the large through-hole of blade to constitute the blade gyroaxis.

The utility model makes the part of torsion spring highly place the large through-hole of blade, and required installing space height has more minimizing, can make the integral body 0 thickness attenuation of handle of a knife like this, and the more compact structure of cutter is easy to carry, and more attractive in appearance.

Further specify the utility model below in conjunction with drawings and Examples.

Description of drawings: Fig. 1 is the front view of embodiment;

Fig. 2 is the A-A cutaway view Amplified image of Fig. 1;

Fig. 3 is the partial elevation view of blade.

Embodiment: as shown in the figure, the root of blade 1 is hinged on by torsion spring 3 in the end of handle of a knife 2, also is provided with control button 4 and blade 1 root on the handle of a knife 2 and cooperates.The link position place of blade 1 root is provided with large through-hole 5, and the first half of torsion spring 3 places large through-hole 5, and the periphery of torsion spring 3 also is with sleeve 6, and these sleeve 6 tops also place the large through-hole 5 of blade 1 to constitute the blade gyroaxises.During use, press control button 4 and can make blade 1 side direction eject handle of a knife 2, sleeve 6 is as the gyroaxis of blade 1, and torsion spring 3 can be positioned, and prevents to move.The upper and lower link of the torsion spring 3 of present embodiment connects respectively on blade 1 and the handle of a knife 2, and the central axis of its bearing of trend and torsion spring 3 is the intersection vertical angle, and torsion spring 3 is highly littler like this, makes the thickness of cutter can be thinner.

Claims

1, a kind of collapsible lifts, comprise blade and handle of a knife, the root of blade is hinged in the end of handle of a knife by torsion spring, also being provided with control button and blade root on the handle of a knife cooperates, it is characterized by: the link position place of blade (1) root is provided with large through-hole (5), the first half of torsion spring (3) places large through-hole (5), and the periphery of torsion spring (3) also is with sleeve (6), and this sleeve (6) top also places the large through-hole (5) of blade (1) to constitute the blade gyroaxis.

2, collapsible lifts according to claim 1 is characterized by: the central axis of the bearing of trend of the upper and lower link of torsion spring (3) and torsion spring (3) is the intersection vertical angle.