Crimping pliers, and toothed wheel having teeth

Patent metadata

Field	Value
Publication number	US-2019356100-A1
Application number	US-201916531524-A
Country	US
Kind code	A1
Filing date	Aug 5, 2019
Priority date	Dec 17, 2014
Publication date	Nov 21, 2019
Grant date	—

Abstract

Crimping pliers are configured to crimp cable lugs onto electrical conductors. The crimping pliers includes first and second crimping jaws pivotally connected together, a first crimping matrix mounted for rotation on the first crimping jaw, a second crimping matrix mounted for rotation on the second crimping jaw, each crimping jaw having a plurality of different first crimping dies formed therein, and interlocks provided on the crimping jaws. The interlocks are configured to lock one of the crimping dies on each crimping jaw into a working position.

First claim

1 . Crimping pliers configured to crimp cable lugs onto electrical conductors, comprising:
a first crimping jaw; a second crimping jaw, the first and second crimping jaws being pivotally connected together at a pivot such that the first and second crimping jaws can be pivoted towards one another; a first crimping matrix mounted for rotation on the first crimping jaw around a first axis of rotation, the first crimping jaw having a circumference and plurality of different first crimping dies formed in the circumference thereof; a first interlock provided on the first crimping jaw, the first interlock configured to lock one of the first crimping dies into a working position; a second crimping matrix mounted for rotation on the second crimping jaw around a second axis of rotation, the second crimping jaw having a circumference and plurality of different second crimping dies formed in the circumference thereof; and a second interlock provided on the second crimping jaw, the second interlock configured to lock one of the second crimping dies into a working position.

2 . The crimping pliers of claim 1 ,
wherein the first crimping matrix is configured to be rotationally displaced in a movement transverse to the first axis of rotation to unlock the locked first crimping die from the working position; and wherein the second crimping matrix is configured to be rotationally displaced in a movement transverse to the second axis of rotation to unlock the locked second crimping die from the working position.

3 . The crimping pliers according to claim 1 ,
wherein the first interlock includes a first interlocking surface, the first crimping dies are formed by tooth-like projections, wherein one of the tooth-like projections has an application surface which can be brought into engagement with the first interlocking surface in the working position of the first crimping die, wherein when viewed in a direction radial to the first axis of rotation, the application surface brought into engagement with the first interlocking surface encloses a first acute angle with respect to a straight line running through the second axis of rotation of the second crimping matrix; and wherein the second interlock includes a second interlocking surface, the second crimping dies are formed by tooth-like projections, wherein one of the tooth-like projections of the second crimping dies has an application surface which can be brought into engagement with the second interlocking surface in the working position of the second crimping die, wherein when viewed in a direction radial to the second axis of rotation, the application surface of the second crimping dies brought into engagement with the second interlocking surface encloses a second acute angle with respect to a straight line running through the first axis of rotation of the first crimping matrix.

4 . The crimping pliers according to claim 3 , wherein the first interlocking surface forms an ascending and/or descending sliding surface in a plan view, and the second interlocking surface forms an ascending and/or descending sliding surface in a plan view.

5 . The crimping pliers according to claim 3 , wherein two first opposite application surfaces are provided in relation to the straight line, and two second opposite application surfaces are provided in relation to the straight line.

6 . The crimping pliers according to claim 5 , wherein the acute angles of the two first application surfaces are the same, and wherein the acute angles of the two second application surfaces are the same.

7 . The crimping pliers according to claim 5 , wherein each acute angle is a value which permits rotation of the crimping matrices by hand.

8 . The crimping pliers according to claim 3 , wherein gearing connects the first and second crimping matrices together, the gearing including a first gear wheel rotatable around an axis of rotation and engaged with the first crimping matrix, the first crimping matrix is movable by the first gear wheel transversely to the axis of rotation of the first gear wheel, a second gear wheel rotatable around an axis of rotation and engaged with the second crimping matrix, the second crimping matrix is movable by the second gear wheel transversely to the axis of rotation of the second gear wheel, wherein the first acute angle is a value which permits rotation of the first crimping matrix only by rotation of the first gear wheel, and the second acute angle is a value which permits rotation of the second crimping matrix only by rotation of the second gear wheel.

9 . The crimping pliers according to claim 8 , further comprising an adjusting wheel mounted on one of the crimping jaws and coupled to the gearing, the adjusting wheel being rotatable around an axis of rotation and configured to adjust the positions of the first and second crimping matrices upon rotation of the adjusting wheel via the gearing.

10 . The crimping pliers according to claim 9 , wherein the adjusting wheel is formed completely or partially of an elastically yieldable material.

11 . The crimping pliers according to claim 8 , wherein each gear wheel has several groups of two or more teeth, wherein the teeth of each group are formed on a common retaining part and the common retaining part is connected to a radially inner region of the respective gear wheel by a single spring-loadable branch.

12 . The crimping pliers according to claim 11 , wherein each branch is connected to the respective common retaining part off-center in a circumferential direction.

13 . The crimping pliers according to claim 11 , wherein at least three teeth are formed on each common retaining part.

14 . The crimping pliers according to claim 1 , wherein the first interlock includes a first spring and the first crimping die can be moved from the working position only against action of the first spring; and wherein the second interlock includes a second spring and the second crimping die can be moved from the working position only against action of the second spring.

15 . The crimping pliers according to claim 14 , wherein a biasing force of the first spring force permits rotation of the first crimping matrix by hand, and a biasing force of the second spring force permits rotation of the second crimping matrix by hand.

16 . The crimping pliers according to claim 7 , further comprising an adjusting wheel mounted on one of the crimping jaws and coupled to the first crimping matrix, the adjusting wheel being rotatable around an axis of rotation and configured to adjust the position of the first crimping matrix.

17 . The crimping pliers according to claim 16 , wherein the adjusting wheel is formed completely or partially of an elastically yieldable material.

18 . Crimping pliers configured to crimp cable lugs onto electrical conductors, comprising:
a first crimping jaw; a second crimping jaw, the first and second crimping jaws being pivotally connected together at a pivot such that the first and second crimping jaws can be pivoted towards one another; a first crimping matrix mounted for rotation on the first crimping jaw around a first axis of rotation, the first crimping jaw having a circumference and plurality of different first crimping dies formed in the circumference thereof; a second crimping matrix mounted for rotation on the second crimping jaw around a second axis of rotation, the second crimping jaw having a circumference and plurality of different second crimping dies formed in the circumference thereof; a separate part attached to the second crimping matrix, wherein symb

Assignees

• Klauke Gmbh Gustav

Inventors

• Frenken Egbert

Classifications

• B25B7/22

  Pliers provided with auxiliary tool elements, e.g. cutting edges, nail extractors (for removing insulation or armouring from electric cables H02G1/12) · CPC title

• H01R43/042 Primary

  Hand tools for crimping · CPC title

• F16H55/14

  Construction providing resilience or vibration-damping (F16H55/06 takes precedence) · CPC title

• B25B27/14

  for assembling objects other than by press fit or detaching same · CPC title

• B25B7/16

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