CN2342938Y

CN2342938Y - Double adjustable jaw wrench

Info

Publication number: CN2342938Y
Application number: CN 98228583
Authority: CN
Inventors: 潘玮
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-03
Filing date: 1998-04-03
Publication date: 1999-10-13
Anticipated expiration: 2008-04-03

Abstract

The utility model relates to a wrench with double movable claws. The utility model is provided with two movable claws. The positioning parts of the movable claws are matched with the positioning element of a fixing body, and one end of each movable claw of the two movable claws is provided with a rack bar. The rack bars are respectively engaged with a pair of gears which are mutually engaged, and one gear is engaged with a semicircular gear which is arranged on a force moment arm. The utility model realizes the functions that nuts with various specifications are fastened to be tightened or to be receded.

Description

Double adjustable jaw wrench

The utility model relates to the hand-operated tools that a kind of mechanical work is used, particularly a kind of spanner that can tighten or withdraw from nut fast.

The spanner of known technology adopts the screw thread roll adjustment, move slower, so the speeder wrench of many types produces in succession.The applicant applied for once that a name was called " multi-functional fast opening spanner ", application number 97205441.3, described spanner has fixedly a cat's paw and a corresponding movable cat's paw, fixedly the cat's paw also links a moment arm, moment arm is by the device control activity cat's paw of a similar lever, and this spanner can produce gratifying effect, but the phenomenon of skidding is arranged sometimes, for further improving the performance of this product, it is necessary doing some improvement.

The purpose of this utility model is to provide a kind of Double adjustable jaw wrench that can tighten the different size nut fast that can overcome known technology spanner shortcoming.

For achieving the above object; scheme of the present utility model is: a kind of Double adjustable jaw wrench; two movable claws are arranged; the localization part of pawl cooperates with the setting element of a fixed body; two movable claws can be drawn close on rectilinear direction or back out mutually; one end of pawl is carved with tooth bar, described tooth bar each with the engagement of a pair of pitch wheel, one of them gear also with the semi-circle gear engagement of a band moment arm.

Adopt such scheme, can tighten and automatically adapt to the nut of different-diameter fast, realized scheme of the present utility model.

Illustrate in greater detail scheme of the present utility model below in conjunction with diagram and embodiment.

Fig. 1 is the front view of Double adjustable jaw wrench;

Fig. 2 is the vertical view of Double adjustable jaw wrench;

Fig. 3 is the fixed body front view of Double adjustable jaw wrench;

Fig. 4 is the fixed body vertical view of Double adjustable jaw wrench;

Fig. 5 is the moment arm front view of Double adjustable jaw wrench;

Fig. 6 is the moment arm vertical view of Double adjustable jaw wrench;

Fig. 7 is the movable claw front view of Double adjustable jaw wrench;

Fig. 8 is the movable claw vertical view of Double adjustable jaw wrench;

As Fig. 1, Fig. 2, described Double adjustable jaw wrench has two movable claws (1) and (2) and a fixed body (3), pawl (1) and (2) cooperate with fixed body (3) by setting element, the tooth bar that carve pawl (1) and (2) rear end meshes with a pair of gear (4) and (5) respectively, intermesh in gear (4) and (5), gear (4) also is with the moment arm (6) of semi-circle gear to mesh with one, returning device (7) is housed between moment arm (6) and the fixed body, described returning device is a torsionspring, one end is fixed on the moment arm (6), and an end is fixed on the fixed body (3).

Described Double adjustable jaw wrench in use, moment arm (6) inhour is moved, then movable claw (1) and (2) are backed out mutually, give the moment arm application of force clockwise after waiting to block nut, then moment arm (6) is given unlikely skidding of clamping force of nut all the time by the tooth bar on two gears (4) and (5), the pawl, adds the moment of torsion that moment arm (6) applies nut is backed out, when using this spanner, must not note making bayonet socket to adapt to the nut of different-diameter, the process of blocking is carried out fully automatically.

In shown position; obviously semicircle tooth on the moment arm (6) and gear (4) engagement meet application of force custom; make staff use the mode of drawing to moment arm (6) application of force; if but need in another way in some occasion; the mode that for example pushes away; then require semicircle tooth and gear (5) engagement on the moment arm (6), so mesh according to being accustomed to and deciding, no matter which kind of mode is all within the protection domain of present patent application semicircle tooth on the moment arm (6) and gear (4) or (5).

Gear on the spanner (4), (5) and moment arm (6) all connect by the pivot pin that is fixed on the fixed body (3), and the free degree of rotating around pivot pin is only arranged.

Among Fig. 3 and Fig. 4, the front end of fixed body (3) has an element for the movable claw location, described setting element is the slotted eye (8) of a circle and has mouthful (9) symmetrically, the midriff of fixed body (3) separately has cavity (10) so that hold gear (4), (5) and the fore-end of moment arm (6), the torsionspring place that holds on the returning device (7) is pit (11).

On technology, make fixed body (3) and can take multiple scheme, for example in two, process modes such as the back recombinant is fixed together respectively and carry out fixed body.

Fig. 5 and moment arm (6) shown in Figure 6 have a gear (12) that is slightly larger than semicircle, are the axis hole (13) in the center of circle with the top circle, and the moment arm (6) of a profile of tooth, as the instrument of the application of force.

The pawl of Fig. 7 and Fig. 8 has the element (15) and the pawl head (14) that meet fixed body (3) localization part, and pawl has intensity and rigidity preferably, during with assurance work, and not fragile and distortion.

Claims

1, a kind of Double adjustable jaw wrench; be used for mechanical work; it is characterized in that: described spanner has two movable claws (1) and (2); the localization part of pawl cooperates with the setting element of a fixed body (3); make two movable claws draw close mutually or to back out in rectilinear direction; one end of pawl (1) and (2) is carved with tooth bar, described tooth bar each with a pair of pitch wheel (4) and (5) engagement, one of them gear also with a moment arm (6) with semi-circle gear mesh.

2, Double adjustable jaw wrench according to claim 1 is characterized in that: between moment arm (6) and the fixed body (3) returning device is housed.

3, Double adjustable jaw wrench according to claim 1 is characterized in that: the front end of fixed body (3) has the circular slotted eye (8) for the movable claw location, and slotted eye (8) has mouthful (9) symmetrically.

4, Double adjustable jaw wrench according to claim 3 is characterized in that: the midriff of fixed body separately has cavity.

5, Double adjustable jaw wrench according to claim 4 is characterized in that: hold the torsionspring place and dug pit (11).

6, Double adjustable jaw wrench according to claim 1 is characterized in that: described pawl has a setting element (15) and pawl head (14).