Crimping pliers, and toothed wheel having teeth

Patent metadata

Field	Value
Publication number	US-11784449-B2
Application number	US-201916531524-A
Country	US
Kind code	B2
Filing date	Aug 5, 2019
Priority date	Dec 17, 2014
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

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

The invention claimed is:

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 and including a first spring;
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 and including a second spring, and
wherein the first and second interlocks are configured to lock the crimping matrices into working positions, the first and second crimping matrices being configured to be displaced in a movement transverse to the axes of rotation when rotated thereby unlocking the first and second crimping matrices from the working positions, and wherein the first crimping matrix can be moved from the working position only against action of a spring force of the first spring, the spring force of the first spring acting transversely to the first axis of rotation, and the second crimping matrix can be moved from the working position only against action of a spring force of the second spring, the spring force of the second spring acting transversely to the second axis of rotation.

2. The crimping pliers according to claim 1 , wherein each interlock includes an interlocking surface, wherein each crimping has application surface which can be brought into engagement with the respective interlocking surface to define the working position of the respective crimping matrix,
wherein each of the plurality of first application surfaces of the first crimping matrix brought into engagement with one of the plurality of interlocking surfaces of the first interlock encloses a first acute angle with respect to a straight line running through the second axis of rotation of the second crimping matrix when viewed in a direction radial to the first axis of rotation, and
wherein each of the plurality of first application surfaces of the second crimping matrix brought into engagement with one of the plurality of interlocking surfaces of the second interlock encloses a second acute angle with respect to a straight line running from the second axis of rotation through the first axis of rotation of the first crimping matrix.

3. The crimping pliers according to claim 2 , wherein each of the plurality of interlocking surfaces forms an ascending sliding surface and/or a descending sliding surface in a plan view.

4. The crimping pliers according to claim 1 , 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 a third axis of rotation and configured to adjust the position of the first crimping matrix.

5. The crimping pliers according to claim 1 , wherein each Crimping die is formed by tooth-like projections.

6. 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;
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, wherein the first and second interlocks are configured to lock the crimping matrices into working positions, the crimping matrices are configured to be rotationally displaced in a movement transverse to the axes of rotation to unlock the crimping matrices from the working positions,
wherein each of the first and second interlocks includes a plurality of interlocking surfaces, wherein each of the plurality of first and second crimping dies has a plurality of application surfaces which can be brought into engagement with the one of the plurality of interlocking surfaces to define the working position of the respective crimping matrix,
wherein each of the plurality of application surfaces of the first crimping matrix brought into engagement with one of the plurality of interlocking surfaces of the first interlock encloses a first acute angle with respect to a straight line running through the second axis of rotation of the second crimping matrix when viewed in a direction radial to the first axis of rotation, and wherein each of the plurality of application surfaces of the second crimping matrix brought into engagement with one of the plurality of interlocking surfaces of the second interlock encloses a second acute angle with respect to a straight line running from the second axis of rotation through the first axis of rotation of the first crimping matrix; and
gearing connects the first and second crimping matrices together, the gearing including a first gear wheel rotatable around a third axis of rotation and engaged with the first crimping matrix, the first crimping matrix is movable by the first gear wheel transversely to the first axis of rotation of the first gear wheel, a second gear wheel rotatable around a fourth axis of rotation and engaged with the second crimping matrix, the second crimping matrix is movable by the second gear wheel transversely to the second 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.

7. The crimping pliers according to claim 6 , further comprising an adjusting wheel mounted on one of the crimping jaws and coupled to the gearing, the adjusting wheel being rotatable around a fifth 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.

8. The crimping pliers according to claim 6 , 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.

9. The crimping pliers according to claim 8 , wherein each branch is connected to the respective common retaining part off-center in a circumferential direction.

10. The crimping pliers according to claim 8 , wherein at least three teeth are formed on each common retaining part.

11. 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 cri

Assignees

• Klauke Gmbh Gustav

Inventors

• Frenken Egbert

Classifications

• H01R43/042 Primary

  Hand tools for crimping · CPC title

• B25B7/04 Primary

  adjustable · CPC title

• B25B7/12

  involving special transmission means between the handles and the jaws, e.g. toggle levers, gears · CPC title

• B25B7/16

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

• 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