Wrench with translational wrench jaw

Patent metadata

Field	Value
Publication number	US-9862074-B2
Application number	US-201414369739-A
Country	US
Kind code	B2
Filing date	May 26, 2014
Priority date	May 26, 2014
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A wrench with translational wrench jaw comprises a first wrench jaw, a first handle and a connection portion; a second handle and a second wrench jaw; a first connecting rod, connected with the first handle, a first end of the first connecting rod being arranged with an elastic component; a second connecting rod, connected with the second handle, a first end of the second connecting rod being arranged with an elastic component, the second end of the first connecting rod being connected with the second end of the second connecting rod. The wrench with translational wrench jaw provided by the present invention is suitable for gripping various workpieces; adopting two-stage transmission can provide greater gripping force, being more efficient and avoiding structural damage, thus prolonging the service life; By adopting locking mechanism can release operator's hands and be more convenient.

First claim

The invention claimed is:

1. A wrench with translational wrench jaw characterized by comprising:
a first wrench jaw, a first handle and a connecting portion connecting the first wrench jaw and the first handle, the connecting portion being arranged with a long hole, the long hole being provided with a first flank and a second flank which are parallel to each other, and the first flank being arranged with teeth;
a second handle, connected with the connecting portion via a claw arranged in the long hole, the second handle being connected with the claw via a first pin pivot, the first end of the second handle being arranged with a cam;
a second wrench jaw, connected with the connecting portion in a sliding manner, the second wrench jaw being arranged with a recess to accommodate the cam;
a first connecting rod, connected with the first handle via a second pin pivot, a first end of the first connecting rod being arranged with a first elastic component which is used for the restoration of the first connecting rod;
a second connecting rod, connected with the second handle via a third pin pivot, a first end of the second connecting rod being arranged with a second elastic component which is used for the restoration of the second connecting rod, the second end of the first connecting rod being connected with a second end of the second connecting rod via a fourth pin pivot;
wherein when a workpiece is placed between the first wrench jaw and the second wrench jaw, applying forces in opposite directions respectively to the first handle and the second handle makes the first handle and the second handle move toward each other; the second handle rotates around the first pin pivot, making the second wrench jaw translate toward the first wrench jaw until the translation of the second wrench jaw is limited by the workpiece; the second connecting rod drives the second handle to move toward the second wrench jaw in order that the claw engages with the teeth on the first flank; keeping on applying the forces in the opposite directions, the second handle rotates around the first pin pivot, produces gripping forces greater than the forces in the opposite directions, and transmits the gripping forces to the gripping face of the first wrench jaw and the gripping face of the second wrench jaw;
wherein the second elastic component is a torsion spring;
wherein the wrench with translational wrench jaw further comprises a locking mechanism for preventing the movement of the second wrench jaw away from the first wrench jaw; the locking mechanism comprises a third connecting rod and a first end of the second connecting rod, the first end of the second connecting rod being in fan shape and teeth being arranged on the edge of the fan shape; the first end of the third connecting rod is connected with the second handle via a fifth pin pivot, and a pushing button is arranged on the second end of the third connecting rod, teeth being arranged on the flank of the third connecting rod which faces the first end of the second connecting rod.

2. The wrench with translational wrench jaw according to claim 1 , characterized in that the wrench with translational wrench jaw is made of plate.

3. The wrench with translational wrench jaw according to claim 2 , characterized in that the material of the plate is steel or iron.

4. The wrench with translational wrench jaw according to claim 2 , characterized in that the second wrench jaw is connected with the connecting portion in a sliding manner via a sliding block arranged in the long hole.

5. The wrench with translational wrench jaw according to claim 4 , characterized in that the first edge of the connecting portion facing the second wrench jaw parallels to the first flank of the long hole of the connecting portion; the second wrench jaw has a groove, and a gap is arranged between the first edge and the groove to enable the groove to move along the first edge.

6. The wrench with translational wrench jaw according to claim 1 , characterized in that the wrench with translational wrench jaw is made by forging process.

7. The wrench with translational wrench jaw according to claim 6 , characterized in that a guide slot, which is parallel to the first flank of the long hole of the connecting portion, is arranged on the connecting portion; the second wrench jaw is provided with a groove, a long strip protrusion being arranged on the flank facing the connecting portion thereof; the long strip protrusion is embedded in the guide slot to form a sliding connection between the second wrench jaw and the connecting portion.

8. The wrench with translational wrench jaw according to claim 1 , characterized in that the first elastic component is a tension spring.

9. The wrench with translational wrench jaw according to claim 8 , characterized in that the first connecting rod is in straight shape, and a stop block is arranged on the first handle.

10. The wrench with translational wrench jaw according to claim 8 , characterized in that the first connecting rod is in folded shape.

11. The wrench with translational wrench jaw according to claim 1 , characterized in that a neck is arranged on the second handle.

12. The wrench with translational wrench jaw according to claim 1 , characterized in that the locking mechanism comprises a third elastic component.

13. The wrench with translational wrench jaw according to claim 12 , characterized in that the third elastic component is a torsion spring.

14. The wrench with translational wrench jaw according to claim 1 , characterized in that a scale is arranged on the connecting portion for measuring the distance between the first wrench jaw and the second wrench jaw.

Assignees

• Hangzhou Great Star Tools Co Ltd
• Hangzhou Great Star Ind Co Ltd

Inventors

• Wang Min

Classifications

• B25B13/22

  by ratchet action or toothed bars · CPC title

• B25B13/12

  the jaws being slidable · CPC title

• B25B7/16

  combined with means for tightening the operating arms of jaws · CPC title

• B25B7/14

  Locking means {(B25B7/123 takes precedence)} · CPC title

• B25B7/10 Primary

  with adjustable fulcrum · CPC title