CN201363357Y

CN201363357Y - Ring table type antitheft screw and screwdriver

Info

Publication number: CN201363357Y
Application number: CNU2009200787045U
Authority: CN
Inventors: 高世超
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-16
Filing date: 2009-01-16
Publication date: 2009-12-16
Anticipated expiration: 2019-01-16

Abstract

The utility model relates to a hardware tool, in particular to a ring table type antitheft screw and a screwdriver. The top of the ring table type antitheft screw is provided with a ring table which is coaxial with a screw rod of the ring table type antitheft screw; the screwdriver consists of a rotary handle, a washer, a grab handle, a push rod, a casing and deformation joints; wherein the bottom end of the push rod takes the shape of a frustum of a cone of which the lower bottom surface is smaller than the upper bottom surface; the casing is cylindrical, and the inner side of the bottom end of the casing is a tapered curved surface; the curved surface is provided with three deformation joints which are distributed at 120 degrees in a plane; and the lower end of the casing is in movable fit with the ring table at the upper end of the ring table type antitheft screw. As the ring table type antitheft screw can only be screwed by the special screwdriver, the ring table type antitheft screw can be applied on specific occasions with higher antitheft requirements; and compared with the existing common screw, the antitheft dismountability of the connected components is greatly improved.

Description

Encircle desk-top anti-theft screw and revolve tool

Technical field

The utility model relates to a kind of hardware ﹠ tools, particularly relates to the desk-top anti-theft screw of a kind of ring and revolves tool.

Background technique

The head end of conventional screw generally has straight groove, steps on instrument with screw-driver and is placed in one, and rotary screw is carried out fastening or spin-up.In addition, for convenience multiple instrument of some screw uses, and as the use of needle-nose pliers, spanner etc., regular hexagon is made in the screw terminal outer.Make screw have more versatility like this, made things convenient for user's use.But in some specific occasion, require screw to screw after, must not arbitrarily dismantle without approval, to prevent article lost in the fastened device or stolen, existing screw can't satisfy this requirement.

The model utility content

The utility model is for solving the deficiencies in the prior art, and providing a kind of can only and revolve tool by the desk-top anti-theft screw of the ring of special tool spin-up.

The scheme that solves the utility model technical problem is: the top of encircling desk-top anti-theft screw have one with the ring platform of the screw coaxial heart of the desk-top anti-theft screw of ring.

Revolving tool is made up of swing handle, packing ring, lever, push rod, sleeve pipe and movement joint.

Swing handle is positive hexagon, the columniform push rod concentric of swing handle and its below and be an integral body, and the bottom of push rod is the frustoconic shape of bottom surface less than upper bottom surface.

The material of packing ring is a teflon.Gasket sleeve is on push rod, and packing ring is between swing handle and the lever.

Sleeve pipe is a cylindrical shape, and lever is positive hexagon, and the sleeve pipe of lever and its below is integral body and concentric.

The inboard, bottom of sleeve pipe is the curved surface with tapering, and this curved surface matches with the frustoconic shape of the low side of push rod, and three movement joints that become 120 ° of distributions are in the plane arranged on this curved surface.

The lower end of sleeve pipe is in active relationship with the ring platform of the desk-top anti-theft screw of ring upper end.

The outer side surface of push rod and the inner side surface of sleeve pipe all have screw thread.

When needing the desk-top anti-theft screw of rotating ring, only need earlier the lower end of sleeve pipe to be inserted in the ring platform of the desk-top anti-theft screw of ring, clamp swing handle and lever and clockwise respectively, twisting counterclockwise respectively with two spanners then, under the effect of screw thread, push rod advances downwards, the round platform of push rod bottom is close to the outer wall of sleeve pipe lower end and the inwall of the ring platform of the desk-top anti-theft screw of ring to the lateral pressure of the inboard, bottom of sleeve pipe, relies on this moment the sleeve outer wall and the stiction of the desk-top anti-theft screw ring platform inwall of ring just can will encircle desk-top anti-theft screw rotation by the rotation lever.

Adopt such scheme, can reach following effect:

Since the desk-top anti-theft screw of ring can only by its special use revolve the tool spin-up, can be used for the specific occasion of having relatively high expectations to antitheft, compare with existing plain screw, antitheft tearing open the property that is connected structure is improved greatly.

2. be by coming rotary screw in the ring platform that the sleeve pipe lower end is inserted anti-theft screw, can doing the sunk screw use owing to revolving tool so this encircles desk-top anti-theft screw.

3. owing to be provided with the packing ring that material is a teflon between swing handle and the lever, reduced the frictional force of swing handle lower end surface and lever upper-end surface.Use more laborsaving.

Description of drawings

Fig. 1 is the structural representation of the desk-top anti-theft screw of ring;

Fig. 2 is the structural representation that revolves tool;

Fig. 3 is the worm's eye view of Fig. 2.

Among the figure: 1. encircle desk-top anti-theft screw 2. swing handles 3. packing rings 4. levers 5. push rods 6. sleeve pipes 7. movement joints

Embodiment

The utility model will be further described below in conjunction with drawings and Examples.

The top of encircling desk-top anti-theft screw 1 have one with the ring platform of the screw coaxial heart of the desk-top anti-theft screw 1 of ring.

Revolving tool is made up of swing handle 2, packing ring 3, lever 4, push rod 5, sleeve pipe 6 and movement joint 7.

Swing handle 2 is positive hexagon, columniform push rod 5 concentrics of swing handle 2 and its below and be an integral body, and the bottom of push rod 5 is bottom surface frustoconic shape less than upper bottom surface.

The material of packing ring 3 is a teflon.Packing ring 3 is enclosed within on the push rod 5, and packing ring 3 is between swing handle 2 and the lever 4.

Sleeve pipe 6 is a cylindrical shape, and lever 4 is positive hexagon, and lever 4 is integral body and concentric with the sleeve pipe 6 of its below.

The inboard, bottom of sleeve pipe 6 is the curved surfaces with tapering, and this curved surface matches with the frustoconic shape of the low side of push rod 5, and three movement joints 7 that become 120 ° of distributions are in the plane arranged on this curved surface.

The lower end of sleeve pipe 6 is in active relationship with the ring platform of the desk-top anti-theft screw of ring 1 upper end.

The inner side surface of the outer side surface of push rod 5 and sleeve pipe 6 all has screw thread.

When needing the desk-top anti-theft screw 1 of rotating ring, only need earlier the lower end of sleeve pipe 6 to be inserted in the ring platform of the desk-top anti-theft screw 1 of ring, clamp swing handle 2 and lever 4 and clockwise respectively respectively with two spanners then, twisting counterclockwise, under the effect of screw thread, push rod 5 advances downwards, the round platform of push rod 5 bottoms is close to the outer wall of sleeve pipe 6 lower ends and the inwall of the ring platform of the desk-top anti-theft screw 1 of ring to the lateral pressure of the inboard, bottom of sleeve pipe 6, relies on this moment the stiction of the desk-top anti-theft screw 1 ring platform inwall of sleeve pipe 6 outer walls and ring just can will encircle desk-top anti-theft screw 1 rotation by rotation lever 4.

Claims

1. one kind is encircled desk-top anti-theft screw and revolves tool, it is characterized in that: the top of encircling desk-top anti-theft screw have one with the ring platform of the screw coaxial heart of the desk-top anti-theft screw of ring, revolve tool by swing handle, packing ring, lever, push rod, sleeve pipe and movement joint are formed, swing handle is positive hexagon, the columniform push rod concentric of swing handle and its below and be an integral body, the bottom of push rod is the frustoconic shape of bottom surface less than upper bottom surface, the material of packing ring is a teflon, gasket sleeve is on push rod, packing ring is between swing handle and the lever, sleeve pipe is a cylindrical shape, lever is positive hexagon, the sleeve pipe of lever and its below is integral body and concentric, the inboard, bottom of sleeve pipe is the curved surface with tapering, and this curved surface matches with the frustoconic shape of the low side of push rod, and three movement joints that become 120 ° of distributions are in the plane arranged on this curved surface, the lower end of sleeve pipe is in active relationship with the ring platform of the desk-top anti-theft screw of ring upper end, and the outer side surface of push rod and the inner side surface of sleeve pipe all have screw thread.