CN2176870Y

CN2176870Y - Portable self-locking wrench

Info

Publication number: CN2176870Y
Application number: CN 93204539
Authority: CN
Inventors: 刘学凡; 刘士源
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-05
Filing date: 1993-03-05
Publication date: 1994-09-14
Anticipated expiration: 2003-03-05

Abstract

The utility model discloses a portable self-locking wrench, which is composed of a sleeve handle, a wrench handle, a movable wrench head, and reversible snap pins. An irregular hexagonal jaw is arranged on the movable wrench head which is pin connected with the round end of the wrench handle through the reversible snap pins which can be alternatively pulled out and inserted on a pin shelf. The wrench is especially suitable for being used as a bicycle repairing tool or a domestic tool.

Description

Portable self-locking wrench

The utility model relates to common tool, the spanner that particularly a kind of outer-hexagonal head that is suitable for plurality of specifications is used.

In the outer-hexagonal head spanner of the prior art a kind of adjustable wrench is arranged, as the operation knife-edge, the spanner of a hexagonal auto lock alive in the off-axis cover on the head.Its shortcoming is that the driving end handle is straight, be unsuitable for the situation that wrenching bolt has barrier on every side, and specification amplitude modulation is limited, and its trigger piece length is limit by structure, to making restricted application.

The purpose of this utility model is in order to overcome above-mentioned deficiency of the prior art, the spanner that provides a kind of outer-hexagonal head that is suitable for plurality of specifications to use, and can have around the bolt under the situation of barrier and use, and, need the spanner of the portable use of change trigger piece length according to pulling torque.

Above-mentioned purpose is realized by following technical proposals.A kind of portable Self-tightened spanner is made up of toggle, trigger piece, live spanner and positive left-hand thread pin etc., and it is characterized by described spanner alive and be provided with special-shaped hexagon and pull mouth, and by being pivotally attached at the positive left-hand thread pin that can alternately plug on the pin frame on the round end on the plate handle.And described pin frame is provided with the plate that rises and falls, and with so that positive and negative button pin is done the alternately interlock of plug, and will sell frame by the frame pin and also be fixed on the trigger piece together, and be to do the adjustment of stretching relatively between described toggle and the trigger piece.

Illustrate according to a most preferred embodiment of the present utility model below with reference to accompanying drawing.

Fig. 1 is the front view according to spanner of the present utility model.

Fig. 2 is the left view of Fig. 1 structure.

Fig. 3 is the stravismus schematic diagram of the main member of Fig. 1 structure.

Fig. 4 is the partial view of Wrench head.

Fig. 5 is along the right cutaway view of A-A line among Fig. 4.

Done curved neck 3 among the figure on the trigger piece 2, these place central authorities are provided with frame pin-and-hole 15; Its front end is a round end 4, is provided with a pair of pin-and-hole 16; Its rear end is the handle of an extension, makes to have a shallow elongated slot 14 on it.A toggle 17 is enclosed within on the rear end long handle of trigger piece two, needs the flexible position of regulating that both are relatively fixed by screw 18 by using.Spanner 1 alive is provided with that abnormity is hexagonal pulls mouthfuls 12, corresponding to the pin-and-hole on the trigger piece 2 16, has also done a pair of pin-and-hole 11 on it, but with the direction of pin-and-hole 11 axis normal on do a gap 13 is arranged so that the (see figure 3) in it of round end 4 plug-in mountings on the trigger piece 2.On the pin frame 6 right-hand thread pin 7 and the left-hand thread pin 8 that assembles to be slidingly matched is housed.Be respectively equipped with the pin 10 that rises and falls on the relevant position of two pins.Two 10 of pins that rise and fall are equipped with the plate 9 that rises and falls of II type, and it is connected and is fixed on the correspondence position of curved neck 3 of plate handle 2 with pin frame 6 by screw 5.

This position needs a pair of pin-and-hole 16 that positive left-hand thread pin 7,8 is aimed on trigger pieces 2 round ends 4, and can satisfy relative position relation as shown in Figure 5 when just in time making spanner 1 alive be plugged on the round end 4.

The operation principle of this spanner is such, and pulling of trap head 1 mouthfuls 12 is enclosed within the outer-hexagonal the higher authorities that need turn-knob, need press right-hand thread pin 7 or left-hand thread pin 8 works one of them by positive left-hand thread.When for example pressing left-hand thread pin 8, plate 9 is fixed on the screw 5 in midpoint owing to rise and fall, play point action, the pin 10 that rises and falls on the left-hand thread pin 8 is depressed the plate right-hand member that rises and falls, thereby its relative left end is pressed, and by the pin that rises and falls on the right-hand thread pin 7 its rising is made to extract pin-and-hole 16 and 11, thereby make originally the trap head 1 that articulates by the right-hand thread pin and the left hole of trigger piece 2 articulate the pivot joint that converts right ports to, as shown in Figure 5.

Because the center of pin-and-hole 16 relative round ends 4 is eccentric settings.Add the hexagonal turn-knob of pulling the acting in conjunction of mouth 12 applicable to the outer-hexagonal head of plurality of specifications of abnormity in addition.(shown in Fig. 1 dotted line).

Owing on the trigger piece 2 curved neck 3 is arranged,, makes the spanner of utility model that wider application be arranged so can get out of the way the obstacle when being had barrier on every side by stubborn bolt.The long handle of toggle 17 relative trigger pieces 2 can be done the adjustment of relative position, not only makes the compact conformation of spanner own, also can make spanner increase the effect of pulling moment of torsion.

Spanner of the present utility model, the bicycle that is particularly suitable for carrying is repaired or home-use instrument.

Claims

1, a kind of by portable Self-tightened spanner toggle (17), trigger piece (2), trap head (1), and positive left-hand thread pin (7) (8) etc. is formed.

It is characterized by described spanner alive (1) and be provided with special-shaped hexagon and pull mouthful (12), and be pivotally attached on the round end (4) on the trigger piece (2) by the spanner (1) of will living at the right-hand thread pin (7) that can alternately plug on the pin frame (6) and left-hand thread (8).

2, according to the spanner of claim (1), it is characterized by wherein said pin frame (6) and be provided with the plate that rises and falls (9), with so that the alternately interlock of plug of right-hand thread pin (7) and left-hand thread pin (8), and will sell frame (6) by frame pin (5) and also be fixed to together on the trigger piece (2).