WO2007128210A1

WO2007128210A1 - A single wedge wrench

Info

Publication number: WO2007128210A1
Application number: PCT/CN2007/001325
Authority: WO
Inventors: Hong Lu
Original assignee: Hong Lu
Priority date: 2006-05-08
Filing date: 2007-04-23
Publication date: 2007-11-15
Also published as: CN2908047Y

Abstract

A single wedge wrench includes a jaw with a sliding track, and a wedge which has a runner and matches with said jaw. A restoring spring is disposed between said wedge and said jaw. The cross section of said sliding track is of dovetail structure. A groove for restoring spring is formed in the center of said sliding track along the sliding direction of said wedge. Said restoring spring is installed in said groove. A location through hole is formed in the radial direction of said wedge. Said wedge and said restoring spring are jointed by a fixed pin in the location through hole.

Description

Single wedge plate, pipe wrench

The utility model belongs to the field of wrenches, in particular to a single wedge block plate and a pipe wrench.

Background technique

The prior art wrenches are commonly used with adjustable wrenches, wrenches and special pipe wrenches. Various wrenches have their own special fields, but they also have their own limitations: Wide range of wrenches, low clamping accuracy; High precision and narrow application range; pipe wrenches can be used to fit special pipe fittings such as round pipes, but not suitable for daily use. Therefore, the relevant technical personnel combine the advantages of the three into one, and realize the multi-functionality of the single-piece wrench. For example, the name of the announcement of the Chinese Patent Gazette on November 5, 2003 is: Single wedge wrench, patent number 02270676. Patented technology, comprising wedges and jaws with serrated grooves, wherein one of the jaws has a serrated groove on the clamping surface; the wedge is associated with the other jaw, and It can slide along the inner side of the jaw, and the angle between the inner side and the clamping surface of the jaw is greater than zero. And less than 90°; a spring is arranged longitudinally between the wedge and the jaw. The single wedge wrench preferably combines a plurality of wrenches applied in different fields into one body, but the arrangement of the slide rails and the slide rails of the wrench is not reasonable, and the clamping jaws need to be processed multiple times, and the processing difficulty is relatively large. It has a certain impact on the efficiency of the mass production of the wrench, and it is not convenient for the maintenance and maintenance of the wrench.

Summary of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art described above, and to provide an improvement to the above prior art, which makes the setting of the sliding rails and the slide rails more reasonable, and increases the opening and closing stroke of the wedges, which is more conducive to the clamping. The adjustment of the holding gap, and the difficulty of processing the wrench, and the single wedge block plate and pipe wrench for improving the production efficiency of the wrench in large batch processing.

To achieve the above object, the present invention is achieved by the following technical solutions: a single wedge plate and a pipe wrench, including a wrench jaw with a slide rail, and a wedge machined with a slide and matched with the jaw The return spring is located between the wedge and the clamping jaw, and is characterized in that the transverse section of the sliding rail is a dovetail structure, and the central position of the sliding rail is processed with a return spring fitting groove along the sliding direction of the wedge, and the return spring is embedded in the block. In the recessed recess, the wedge is radially machined with a positioning through hole, and the wedge is coupled to the return spring through a fixing pin in the positioning through hole. The fitting groove is a blind groove, and the positioning through hole on the wedge can be processed at different positions of the wedge according to the size of the wedge.

According to the same design principle, the slide rail 7 can also be machined on the wedge, the slide is machined on the jaws, and the wedge can also be mounted on any of the jaws of the wrench, which is processed, installed and used in the same way. After the improvement of the utility model, the dovetail-shaped slide rails and slide rails are more convenient for mechanical processing, thereby improving the efficiency of the mass production of the wrenches, and simultaneously improving the processing precision of the two, respectively, and making the positioning more precise, and the open type The reset spring fitting groove facilitates the pick-and-place of the return spring and also makes the dimension 4 of the wrench more convenient. .

DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings:

Figure 1: Schematic diagram of the installation structure of the utility model;

Figure 2: Schematic diagram of the wedge;

Figure 3: Schematic diagram of the A-direction structure of Figure 2;

Figure 4: Schematic diagram of the jaw structure;

Figure 5: Schematic diagram of the B-direction structure of Figure 4;

Figure 6: Schematic diagram of the C-direction structure of Figure 4.

In the figure: 1 wedge; 2 positioning through hole; 3 embedded groove; 4 reset spring; 5 jaw; 6 slide; 7 slide.

detailed description

As shown in FIG. 1 to FIG. 6, the single wedge plate and the pipe wrench include a wrench jaw 5 with a slide rail 7, and a wedge 1 processed with a slide 6 and matched with the jaw 5, a return spring 3 is located between the wedge 1 and the jaw 5, characterized in that the sliding rail 7 has a dovetail structure in a lateral section, and the center position of the sliding rail is processed along the sliding direction of the wedge 1 with a return spring fitting groove 3, the return spring 4 is embedded in the fitting recess 3, and the wedge 1 is radially machined with a positioning through hole 2, and the wedge 1 and the return spring 4 are connected by a fixing pin in the positioning through hole 2.

The fitting recess 3 is a blind groove, and the positioning through holes on the wedge can be machined at different positions of the wedge 1 according to the size of the wedge 1.

According to the same design principle, the slide rail can also be machined on the wedge 1 and the slide 6 is machined in the clamp On the claw 5, and the wedge 1 can also be mounted on any of the jaws of the wrench, and the processing, installation and use effects are the same.

After the above improvements of the utility model, in addition to inheriting the advantages of the prior art wrenches, the dovetail-shaped slide rails 7 and the slide rails 6 are more convenient for machining, which increases the opening and closing stroke of the wedges, which is more conducive to the clamping. The adjustment of the holding gap improves the production efficiency of the large-volume processing of the wrench, and simultaneously improves the processing precision of the two, and makes the positioning more precise. In addition, the open-type return spring embedded groove 3 facilitates the pick-and-place of the return spring 4. The maintenance of the wrench is more convenient, and the reset spring fixing and the screw on the prior art wrench are eliminated, and the wrench is more compact and beautiful from the whole.

Claims

The invention relates to a single wedge plate and a pipe wrench, comprising a wrench jaw with a slide rail, and a wedge piece processed with a slide rail and matched with the jaw, the return spring being located between the wedge and the jaw, The utility model is characterized in that the transverse section of the sliding rail is a dovetail structure, and the central position of the sliding rail is processed with a return spring fitting groove along the sliding direction of the wedge, and the return spring is embedded in the embedded groove, and the wedge is radially processed. The through hole is positioned, and the wedge and the return spring are coupled through a fixing pin in the positioning through hole.

The single wedge block and pipe wrench according to claim 1, wherein the fitting groove is a blind groove.