CN101559583A

CN101559583A - Special spanner

Info

Publication number: CN101559583A
Application number: CNA2008100152969A
Authority: CN
Inventors: 孙少进
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-19
Filing date: 2008-04-19
Publication date: 2009-10-21

Abstract

The invention belongs to the technical field of hand tools, in particular to a special spanner. The invention is characterized in that an inner core and an outer sleeve are embedded in a round hole at one end of a spanner body, the upper end of the inner core is fixedly connected with a gland, and the lower end is arranged in the outer sleeve; a friction-reducing device is arranged between the upper end of the outer sleeve and the inner core, a clip spring is arranged between the inner wall of the outer sleeve and the outer wall of the inner core, and an inner core rotation reversing device and an outer sleeve rotation reversing device are respectively arranged in corresponding positions on the inner wall of the round hole. The invention has the advantages of convenient use, long service life and high working efficiency.

Description

Special spanner

Technical field:

The invention belongs to the hand-operated tools technical field, be specifically related to a kind of special spanner that is used to load and unload antitheft special-shaped securing member or lockset.

Background technology:

At present, at transmission and distribution circuit, electric power facilities such as distribution transformer, and highway, the installations and facilities in oil field are often stolen, design various anti-theft device for this reason, and the instrument that is used to load and unload adopts slow-witted (common) spanner mostly, and no specific purpose tool needs according to appearance and size, need plurality of specifications simultaneously, belong to split type handling instrument, and commutation the time must be taken off instrument, its shortcoming is, carry inconvenience, inefficiency especially is not suitable for work high above the ground.

Summary of the invention:

The purpose of this invention is to provide a kind of easy to carry, long service life, the special spanner of high efficiency.

Technical scheme of the present invention is: a kind of special spanner, comprise wrench body, and it is characterized in that in wrench body one end circular hole, inlaying inner core and overcoat, the gland that is connected on the inner core, the lower end is positioned at overcoat; Establish the device of reducing friction between end and the inner core on the coat, establish jump ring between outer casing inner wall and the interior outer core, be respectively equipped with inner core and overcoat rotary reversing device at circular hole madial wall correspondence position.

Wherein, the described device of reducing friction is to be made of steel ball between outer set upper side and the inner core or thrust bearing.

Described rotary reversing device is by by bearing pin the commutation piece being installed in the embedding groove that is provided with inner core and overcoat correspondence position wrench body respectively, being established return spring and steel ball at the bottom of the embedding groove in the inlaid hole.

The bayonet socket of described overcoat is inner arc awl teeth type, outer arc awl teeth type, end-side teeth type, inner cone teeth type, many ribs pass or semicircle pass.

Owing to adopt technique scheme, establish the device of reducing friction that steel ball or thrust bearing are formed on the coat between end and the inner core, the relative motion of overcoat inner core is to connect to roll, and has reduced friction; Be respectively equipped with inner core and overcoat rotary reversing device at circular hole madial wall correspondence position, can be as required, but overcoat, inner core single action also can rotate simultaneously; It is capable of reversing need not to take off instrument during commutation, thus have easy to carry, long service life, the advantage of high efficiency.

Description of drawings:

Come technical scheme of the present invention is described further below in conjunction with the drawings and specific embodiments.

Fig. 1 is a structural representation of the present invention.

Fig. 2 is an inner cone teeth type bayonet arrangement schematic diagram.

Fig. 3 is inner arc awl teeth type bayonet arrangement schematic diagram.

Fig. 4 is outer arc awl teeth type bayonet arrangement schematic diagram.

Fig. 5 is an end-side teeth type bayonet arrangement schematic diagram.

Fig. 6 is a triangular pass bayonet arrangement schematic diagram.

Fig. 7 is five rib pass bayonet arrangement schematic diagrames.

Fig. 8 is a semicircle pass bayonet arrangement schematic diagram.

The specific embodiment:

With reference to figure 1, Fig. 2, a kind of special spanner, comprise wrench body 1, in wrench body 1 one end circular holes, inlay inner core 10 and overcoat 9, inner core 10 upper ends are with screw 7 gland 6 that is connected, also can with gland and inner core be processed as one or connect with jump ring between inner core and gland, the inner core lower end is positioned at overcoat 9; Establish the device of reducing friction between overcoat 9 upper ends and inner core 10, the device of reducing friction is to be made of the steel ball 8 between overcoat 9 upper ends and the inner core 10, and making its relative motion is to connect to roll, and also can replace steel ball with thrust bearing, can achieve the above object equally; Establish jump ring 11 between overcoat 9 inwalls and inner core 10 outer walls, inner core can not be come off from overcoat, be respectively equipped with inner core 10 and overcoat 9 rotary reversing devices at circular hole madial wall correspondence position; Rotary reversing device is by by bearing pin 4 commutation pieces 5 being installed in the embedding groove that is provided with inner core and overcoat correspondence position wrench body respectively, establishes return spring 2 at the bottom of the embedding groove in the inlaid hole and steel ball 3 is formed; The bayonet socket of overcoat 9 is inner cone teeth types.

The bayonet socket of overcoat 9 can be inner arc awl teeth types (as Fig. 3), outer arc awl teeth types (as Fig. 4), end-side teeth type (as Fig. 5), many ribs pass (as Fig. 6, Fig. 7) according to the shaped design of anti-theft screw cap or bolt, semicircle pass different shapes such as (as Fig. 8).

Claims

1, a kind of special spanner comprises wrench body (1), it is characterized in that inlaying in wrench body (1) one end circular hole inner core (10) and overcoat (9), the gland (6) that is connected on the inner core (10), and the lower end is positioned at overcoat (9); Between overcoat (9) upper end and inner core (10), establish the device of reducing friction, establish jump ring (11) between overcoat (9) inwall and inner core (10) outer wall, be respectively equipped with inner core (10) and overcoat (9) rotary reversing device at circular hole madial wall correspondence position.

2,, it is characterized in that the described device of reducing friction is to be made of steel ball (8) between overcoat (9) upper end and the inner core (10) or thrust bearing by the described a kind of special spanner of claim 1.

3, by the described a kind of special spanner of claim 1, it is characterized in that described rotary reversing device is by by bearing pin (4) commutation piece (5) being installed in the embedding groove that is provided with inner core and overcoat correspondence position wrench body respectively, being established return spring (2) and steel ball (3) at the bottom of the embedding groove in the inlaid hole.

4, by the described a kind of special spanner of claim 1, the bayonet socket that it is characterized in that described overcoat (9) is inner arc awl teeth type, outer arc awl teeth type, end-side teeth type, inner cone teeth type, many ribs pass or semicircle pass.