Crimping pliers, and toothed wheel having teeth

Patent metadata

Field	Value
Publication number	US-10439351-B2
Application number	US-201515536243-A
Country	US
Kind code	B2
Filing date	Dec 14, 2015
Priority date	Dec 17, 2014
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

The disclosure relates to crimping pliers configured to crimp cable lugs onto electrical conductors. The crimping pliers includes two crimping jaws which can be swiveled towards one another. In each crimping jaw, a crimping matrix configured with a plurality of different crimping dies over a circumference is rotatably mounted with respect to an axis of rotation. The crimping matrices are permanently coupled to each other via the gearing independently of a swivel position of the crimping jaws.

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 from a starting position to a crimping position around the pivot, the first and second crimping jaws pivoting in a plane around the pivot;
a first crimping matrix mounted for rotation on the first crimping jaw around an axis of rotation, the axis of rotation of the first crimping matrix being at a right angle relative to the plane, the first crimping jaw having a circumference and a plurality of different first crimping dies formed in the circumference;
a second crimping matrix mounted for rotation on the second crimping jaw around an axis of rotation, the axis of rotation of the second crimping matrix being at a right angle relative to the plane, the second crimping jaw having a circumference and plurality of different second crimping dies formed in the circumference of the second crimping matrix; and
gearing connecting the first and second crimping matrices together, wherein the crimping matrices are permanently coupled to each other by the gearing independently of the pivot position of the crimping jaws.

2. The crimping pliers according to claim 1 , wherein the gearing includes 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.

3. The crimping pliers according to claim 1 , further comprising
a first bracket attached to the first crimping jaw and configured to engage against the first crimping matrix, wherein the gearing includes a first gear wheel rotatable around an axis of rotation and engaged with the first crimping matrix, and wherein the first crimping matrix is movable by the first gear wheel from a first crimping position wherein the first crimping jaw is engaged with the first bracket in a first position to a second crimping position wherein the first crimping jaw is engaged with the first bracket in a second position; and
a second bracket attached to the second crimping jaw and configured to engage against the second crimping matrix, wherein the gearing includes a second gear wheel rotatable around an axis of rotation and engaged with the second crimping matrix, and wherein the second crimping matrix is movable by the second gear wheel from a first crimping position wherein the second crimping jaw is engaged with the second bracket in a first position to a second crimping position wherein the second crimping jaw is engaged with the second bracket in a second position.

4. The crimping pliers according to claim 3 , further comprising
a first spring mounted to the first crimping jaw and engaged with the first crimping matrix, the first spring biasing the first crimping matrix into engagement with the first bracket, wherein the first crimping matrix can be adjusted to move one of the crimping dies of the first crimping matrix into a working position by movement of the first gear wheel, the first crimping matrix moving transverse to the axis of rotation of the first crimping matrix and against a biasing force of the first spring;
a second spring mounted to the second crimping jaw and engaged with the second crimping matrix, the second spring biasing the second crimping matrix into engagement with the second bracket, wherein the second crimping matrix can be adjusted to move one of the crimping dies of the second crimping matrix into a working position by movement of the second gear wheel, the second crimping matrix moving transverse to the axis of rotation of the second crimping matrix and against a biasing force of the second spring.

5. The crimping pliers according to claim 4 , wherein the bracket includes an interlocking surface, and wherein the crimping dies of the first crimping matrix 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 interlocking surface of the bracket in the working position of the first crimping die, wherein when viewed in a direction radial to the axis of rotation of the first crimping die, the application surface brought into engagement with the interlocking surface encloses an acute angle with respect to a straight line running through the axis of rotation of the second crimping matrix.

6. The crimping pliers according to claim 5 , wherein the interlocking surface forms an ascending and/or descending sliding surface in a plan view.

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

8. The crimping pliers according to claim 7 , wherein the acute angles of the two application surfaces are the same.

9. The crimping pliers according to claim 4 , wherein the biasing force of the spring force permits rotation of the first crimping matrix by hand.

10. The crimping pliers according to claim 5 , wherein the acute angle is a value which permits rotation of the first crimping matrix by hand.

11. The crimping pliers according to claim 4 , wherein the biasing force of the spring force permits rotation of the first crimping matrix only by rotation of the first gear wheel.

12. The crimping pliers according to claim 5 , wherein the acute angle is a value which permits rotation of the first crimping matrix only by rotation of the first gear wheel.

13. The crimping pliers according to claim 1 , further comprising a separate part attached to the second crimping matrix, wherein symbols are applied to the separate part, wherein the separate part is not exposed to crimping forces, the separate part is formed of a different material from a material from which the second crimping matrix is formed.

14. The crimping pliers according to claim 13 , wherein the separate part is fixedly attached to the second crimping matrix such that the separate part rotates with the second crimping matrix.

15. The crimping pliers according to claim 13 , wherein the separate part is arranged coaxially to the second crimping matrix.

16. The crimping pliers according to claim 13 , wherein the separate part is attached to the second crimping jaws about an axis of rotation, and further comprising an adjustment gear mounted on the second crimping jaw and engaged with the separate part and engaged with the gearing.

17. The crimping pliers according to claim 13 , wherein the symbols are printed onto the separate part.

18. The crimping pliers according to claim 13 , wherein the symbols are formed integrally with the separate part.

19. The crimping pliers according to claim 1 , further comprising an adjusting wheel mounted on the second crimping jaw 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, the adjusting wheel and the second crimping matrix have different axes of rotation.

20. The crimping pliers according to claim 19 , wherein the axes of rotation of the adjusting whee

Assignees

• Klauke Gmbh Gustav

Inventors

• Frenken Egbert

Classifications

• 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

• B25B7/22

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

• B25B7/04 Primary

  adjustable · CPC title