CN2139047Y

CN2139047Y - Fast adjusting spanner

Info

Publication number: CN2139047Y
Application number: CN 92242425
Authority: CN
Inventors: 卢国骥
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-03
Filing date: 1992-12-03
Publication date: 1993-07-28
Anticipated expiration: 2002-12-03

Abstract

The utility model discloses a fast adjusting spanner. The fast adjusting spanner has fixed tooth integrated with the spanner body into one unit; a movable tooth provided with rack bars, and a worm wheel engaging and separating device engaged with the rack bars. The fast adjusting spanner is characterized in that the worm wheel engaging and separating device is arranged in the hole on the spanner body at the lower part of the fixed tooth, and guide grooves extended outwards and inclined upwards are respectively arranged at both sides of the hole. The worm wheel has a concentric through hole, and a compression spring is arranged in the through hole; the two ends of the through hole are respectively provided with a supporting and holding piece in slide means; the extending end of the supporting and holding piece matches with the guide groove. The utility model has the advantages of convenient operation, simple fabrication, and smooth adjustment.

Description

Fast adjusting spanner

The utility model relates to a kind of fast accent adjustable wrench, and the worm gear of particularly fast accent adjustable wrench is meshed and the device that separates with tooth bar on the movable teeth.

Existing fast accent adjustable wrench as shown in Figure 1, this adjustable wrench has and the fixing tooth 1 of wrench body all-in-one-piece, downside have tooth bar movable teeth 2 and with the separable worm gear that is meshed 4 of described tooth bar, worm gear 4 is installed on the middle part to have on the bearing pin 3 of notch part 5, have ejector pin 6 and spring 7 in the bottom of worm gear 4, spring 7 holds worm gear 4 and tooth bar engagement by ejector pin, can finely tune this moment, move down if haul worm gear 4 with finger, owing on the bearing pin 3 notch part 5 is arranged, worm gear 4 can be pulled away from the fast accent that then can carry out movable teeth 2 with the engagement of tooth bar, this device is because the end face and the worm gear 4 periphery frictions of ejector pin 6, be unfavorable during use, and bearing pin 3 has notch part 5, the rotation of worm gear 4 also has some setbacks.

Therefore the purpose of this utility model provides a kind of fast accent adjustable wrench, and this spanner is easy to use, finely tunes smooth and easyly, and structure is also uncomplicated.

The utility model proposes a kind of fast accent adjustable wrench, this adjustable wrench has and the fixing tooth of wrench body all-in-one-piece, downside have tooth bar movable teeth and with the engagement separator of the separable worm gear that is meshed of tooth bar, it is characterized in that, the engagement separator of worm gear is arranged in the hole on the wrench body of fixing tooth below, and the both sides in this hole have respectively and extend upward outward-dipping guide groove; Worm gear has the through hole concentric with it, is equipped with an elastic component in the through hole, and this elastic component can be the compression spring, also can be the India rubber piece, and through hole two ends are fitted with a holding piece respectively slidably, and the overhanging end of this holding piece matches with guide groove.

Described holding piece can be for cylindrical, and the section along its axis of its overhanging end is curved.

Described holding piece also can be sphere.

Described holding piece can also constitute for two different cylindrical body of diameter, and its overhanging end diameter is less and the section configuration along its axis its termination is curved.

Described holding piece can be that also a cylinder and a wedge shape block constitute, and its overhanging end is the wedge shape block and matches with guide groove that the inclined-plane of wedge shape block engaged with the end of guide groove.

Also can be two ends on the described worm gear and have a blind hole respectively, a stage clip and holding piece are set respectively in the blind hole, the holding piece shape can be above-mentioned four kinds of forms.

The engagement separator of this worm gear is easy to use, simple in structure, and it is smooth and easy and flexible that worm gear is rotated in fine setting when worm gear and tooth bar engagement.

Below in conjunction with accompanying drawing embodiment of the present utility model is described further:

Fig. 1 is existing fast overall schematic of transferring adjustable wrench;

Fig. 2 is the schematic diagram of engagement separator of the worm gear of the fast accent adjustable wrench that the utility model proposes, other of adjustable wrench is not partly showed for clear among the figure;

Fig. 3 is the partial schematic sectional view at I among Fig. 2-I place, and the situation that cooperates of holding piece and guide groove is described;

It is spheroid that Fig. 4 schematically illustrates holding piece;

It is that two different cylinders of diameter constitute that Fig. 5 schematically illustrates holding piece;

It is that cylinder and wedge shape block constitute that Fig. 6 schematically illustrates holding piece.

Ask for an interview Fig. 2, the figure shows first embodiment of engagement separator of the worm gear of the adjustable wrench that the utility model proposes, worm gear 4 wherein is an engagement with the tooth bar on the movable teeth 2.Be provided with a compression spring 11 in the concentric through hole of worm gear 4, through hole two ends can be fitted with a holding piece 12,12 ' respectively slidably, holding piece 12, and 12 ' is Cylinder, and its overhanging termination is hemispherical, and promptly the section along its axis is circular-arc.Fixedly the both sides in the hole on the wrench body of tooth 1 downside have guide groove 10 respectively, 10 ', this guide groove 10,10 ' extends respectively upwardly and outwardly obliquely, worm gear 4 is together with holding piece 12,12 ' place together hole and holding piece 12,12 ' respectively with guide groove 10,10 ' matches movably, please consults Fig. 3 simultaneously.

Under the effect of compression spring 11, holding piece 12,12 ' difference contact is at guide groove 10, at at 10 ' the end, guide groove 10,10 ' the end, is to holding piece 12, the component that makes progress of 12 ' reaction force impels the tooth bar engagement that moves on the worm gear 4 with movable teeth 2, at this moment can finely tune swimmingly, during fast moving movable teeth 2, move down as long as pinch worm gear 4 with finger if will transfer soon, at this moment guide groove 10,10 ' then forces the inside retraction through hole of holding piece and compression spring 11, if will finely tune, loosing one's grip then to make worm gear 4 be meshed with tooth bar again.

Fig. 4 is second embodiment of the present utility model, and itself and the first embodiment difference only are that its holding piece 12,12 ' is a spheroid.

Fig. 5 is the 3rd embodiment, and itself and the first embodiment difference only are that its holding piece 12,12 ' is that two different cylinders of diameter constitute, and its overhanging end diameter is less, and the termination also is a hemispherical.

Fig. 6 is the 4th embodiment, and itself and the first embodiment difference only are holding piece 12, and 12 ' is that cylinder and wedge shape block constitute, and the end of the inclined-plane of wedge shape block and guide groove 10,10 ' engages.

Fig. 7 is the 5th embodiment, and they are different with first embodiment, and worm gear 4 two ends have the blind hole concentric with worm gear 4 respectively, have a stage clip 11,11 ' and holding piece 12,12 ' slidably in the blind hole respectively, in the present embodiment, this holding piece 12,12 ' is hemispheroidal cylindrical body for overhanging end.

Claims

1, a kind of fast accent adjustable wrench, this adjustable wrench has and the fixing tooth of wrench body all-in-one-piece, downside have tooth bar movable teeth and with the engagement separator of the worm gear of tooth bar engagement, it is characterized in that, the engagement separator of worm gear is arranged in the hole on the wrench body of fixing tooth below, and the both sides in this hole have respectively and extend upward outward-dipping guide groove; Worm gear has the through hole concentric with it, is equipped with an elastic component in the through hole, and through hole two ends are fitted with a holding piece respectively slidably, and the overhanging end of this holding piece matches with guide groove.

2, adjustable wrench according to claim 1 is characterized in that described holding piece is cylindrical, and the section along its axis of its overhanging end is curved.

3, adjustable wrench according to claim 1 is characterized in that described holding piece is a spheroid.

4, adjustable wrench according to claim 1 is characterized in that described holding piece is made of two different cylindrical body of diameter, less and its termination of its overhanging end diameter curved along its axis section configuration.

5, adjustable wrench according to claim 1 is characterized in that described holding piece is made of a cylinder and a wedge shape block, and its overhanging end is the wedge shape block and matches with guide groove that the inclined-plane of wedge shape block engaged with the end of guide groove.

As adjustable wrench as described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that 6, described elastic component is a compression spring.

7, as adjustable wrench as described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that described elastomer is an India rubber piece.