CN2415882Y

CN2415882Y - Self-adjusting spanner

Info

Publication number: CN2415882Y
Application number: CN 00214111
Authority: CN
Inventors: 高维强; 高建强; 高先杰
Original assignee: LAOSHAN TOOLS FACTORY QINGDAO
Current assignee: LAOSHAN TOOLS FACTORY QINGDAO
Priority date: 2000-03-30
Filing date: 2000-03-30
Publication date: 2001-01-24
Anticipated expiration: 2010-03-30

Abstract

The utility model provides a self-adjusting spanner. The anterior part of a handle is provided with a fixed spanner head, the middle part of the anterior end surface of the fixed spanner head is provided with a through slot, and the rear part of a movable spanner head is embedded through the through slot and is hinged with the handle by a rotating shaft. The utility model is characterized in that a reset spring of the movable spanner head is a torsional spring, one end of the reset spring is fixed at the rear part of the movable spanner head, and the other end of the movable spanner head is fixed at the anterior part of the handle. The spiral main body part of the torsional spring is hung on the through slot which is arranged on the anterior end surface of the handle. In addition, the utility model has the advantages of reasonable and compact structure and design, high strength, convenient processing and manufacture, low cost, convenient and reliable operation and wide purpose.

Description

The self-adjustable wrench

The utility model relates to a kind of wrench, particularly a kind of self-adjustable wrench.

The pipe wrench that generally uses in the prior art divides jaw manual adjustments formula and two kinds of versions of self-adjustable, manual adjustments formula pipe wrench ubiquity complex structure, adjusting inconvenience, and especially head is thick, appearance and size is big, and usage space requires shortcomings such as spaciousness; Chinese patent discloses the self-adjustable pipe wrench of a kind of by name " pipe wrench ", the patent No.: 98247269.2, and the handle front portion has the groove of wearing, and adjustable clamp portion end to end can be nested in this and wears in the groove, and by rotating shaft and handle hinge.Its movable binding clip back-moving spring is an a kind of spring, and the one end is affixed with screw and handle, and another distal process withstands on adjustable clamp and holds end to end.It is longer that it wears groove, also will offer sheet spring fixing screw hole, and structure is not compact, and product strength is low, the easy slippage of sheet spring, distortion, and it is unreliable to use, and movable binding clip rotates and is restricted, and difficulty of processing is big, the cost height.

The purpose of this utility model is the shortcoming at the pipe wrench existence of above two kinds of patterns, and provides a kind of improved self-adjustable wrench, its reasonable in design, compactness, the intensity height, easy to use and reliable, movable binding clip rotates freely, reset flexibly, processing and fabricating is convenient, and cost is low.Can be applicable to the narrow space operation, have wide range of applications.

The purpose of this utility model is achieved through the following technical solutions: a kind of self-adjustable wrench, comprise movable binding clip, handle, movable binding clip back-moving spring, the handle front portion is a fixed pliers head, the centre of fixed pliers head front end face has wears groove, the adjustable clamp back of head embeds and wears in the groove, and by rotating shaft and handle hinge, it is characterized in that described movable binding clip back-moving spring is a torsionspring, the one end is fixed on the adjustable clamp back of head, the other end is fixed on the handle front portion, and the helical body of torsionspring partly is suspended on and wears in the groove.

Described movable binding clip 3 is a crotch-shaped, and the bending clamping face of its front end is 110 ° of-130 ° of angles, and fixed pliers head 4 is the semicircle arcuation.

Have sawtooth on described movable binding clip 3 clamping faces, the intermediate projections position has sawtooth, also has sawtooth on the end face of fixed pliers head 4.

The utility model compared with prior art has many advantages and good effect: movable binding clip back-moving spring adopts that a volume is little, the torsionspring of good springiness, the one end is fixed on the adjustable clamp back of head, the other end is fixed on the handle front portion, and the helical body of torsionspring partly is suspended on wearing in the groove of offering on the handle front end face.Its reasonable in design, compactness, the intensity height is convenient to processing and fabricating, and movable binding clip rotates freely, resets flexibly, and is easy to use and reliable; Be applicable to the narrow space operation, but the parts of various profiles such as clamping nut, bolt, pipe have wide range of applications.

Fig. 1 is the front view of the utility model wrench;

Fig. 2 is the vertical view of the utility model wrench;

Fig. 3 is that Fig. 2 A-A is to profile.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Referring to Fig. 1, Fig. 2, Fig. 3, a kind of self-adjustable wrench, handle 1 is anterior for having the semicircle arcuation fixed pliers head 4 of sawtooth, the centre of fixed pliers head 4 front end faces has wears groove 6, and movable binding clip 3 rear portions embed and wear in the groove 6, and by rotating shaft 2 and handle 1 hinge, movable binding clip back-moving spring 5 is a torsionspring, the one end is fixed on movable binding clip 3 rear portions, and the other end is fixed on to be worn on groove 6 madial walls, and the helical body of torsionspring 5 partly is suspended on wears in the groove 6.Movable binding clip 3 is a crotch-shaped, and the bending clamping face of its front end is 120 ° of angles, has sawtooth on the clamping face, and the intermediate projections position also has sawtooth.

Claims

1, a kind of self-adjustable wrench, comprise movable binding clip 3, handle 1, movable binding clip back-moving spring 5, handle 1 front portion is a fixed pliers head 4, the centre of fixed pliers head 4 front end faces has wears groove 6, and movable binding clip 3 rear portions embed and wear in the groove 6, and by rotating shaft 2 and handle 1 hinge, it is characterized in that described movable binding clip back-moving spring 5 is a torsionspring, the one end is fixed on movable binding clip 3 rear portions, and the other end is fixed on handle 1 front portion, and the helical body of torsionspring 5 partly is suspended on wears in the groove 6.

2, according to the described self-adjustable wrench of claim 1, it is characterized in that described movable binding clip 3 is crotch-shaped, the bending clamping face of its front end is 110 ° of-130 ° of angles, and fixed pliers head 4 is the semicircle arcuation.

3, according to claim 1 or 2 described self-adjustable wrench, it is characterized in that having sawtooth on described movable binding clip 3 clamping faces, the intermediate projections position has sawtooth, also has sawtooth on the end face of fixed pliers head 4.