Padlock having a blocking plate for a spring-biased locking element

Patent metadata

Field	Value
Publication number	US-9689179-B2
Application number	US-78870010-A
Country	US
Kind code	B2
Filing date	May 27, 2010
Priority date	Jun 2, 2009
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

A padlock including a lock body, a shackle having two shanks with grooves for receipt of respective locking elements, and a pin which can be rotated by a lock cylinder core for moving the locking elements into their locking position. The pin has an engagement element configured to cooperate with an entrainer formation on the lock cylinder core. The padlock also includes a blocking plate located between the pin and the lock cylinder core and which is fastened in the lock body. The blocking plate has an opening through which the entrainer formation projects into the plane of the engagement element. The opening is configured such that, on the one hand, rotational movement of the lock cylinder core is possible and, on the other hand, a marginal region of the opening forms an abutment engageable with the entrainer formation for restricting rotational movement of the lock cylinder core.

First claim

What is claimed is:

1. A padlock comprising:
a lock body;
a shackle with two shanks each having a groove for the reception of a part region of a corresponding locking element;
a pin operable to be acted on by a lock cylinder core to make a rotational movement for moving the locking elements into a locked position, the pin having a jacket surface that includes a pair of oppositely disposed grooves as well as another groove having a depth greater than the pair of oppositely disposed grooves, and at least one engagement element configured to cooperate with at least one entrainer formation of the lock cylinder core;
a spring biasing the pin into the locked position;
a blocking plate located between the pin and the lock cylinder core that is fastened in the lock body and has an opening through which the entrainer formation of the lock cylinder core projects into a plane of the engagement element, with the opening being configured such that rotational movement of the lock cylinder core is possible and such that a marginal region of the opening forms an abutment that is engageable with the entrainer formation for restricting rotational movement of the lock cylinder core; and
a selectively removable bridge member inserted between the engagement element and the entrainer formation, the bridge member operable to be inserted through the opening in the blocking plate into the plane of the engagement element;
wherein the pin is arranged entirely outside a plane defined by the blocking plate,
a core play exists between the engagement element and the entrainer formation that allows rotation of the lock cylinder core about a specific angle without the pin co-rotating, and
the bridge member, when selectively inserted between the engagement element and the entrainer formation, eliminates the play.

2. The padlock in accordance with claim 1 , wherein a first marginal region of the opening in the blocking plate forms another abutment engageable with the entrainer formation for restricting rotational movement of the lock cylinder core into an open position.

3. The padlock in accordance with claim 1 , wherein the lock cylinder core has first and second entrainer formations that are arranged off-center on an end face facing the pin and that are oppositely disposed with respect to an axis of rotation of the lock cylinder core.

4. The padlock in accordance with claim 3 , wherein the first and second entrainer formations each have a substantially rectangular cross-section.

5. The padlock in accordance with claim 3 , wherein the first marginal region of the opening in the blocking plate forms a first abutment engageable with the first entrainer formation for restricting rotational movement of the lock cylinder core into an open position, and wherein a second marginal region of the opening in the blocking plate forms a second abutment engageable with the second entrainer formation for restricting rotational movement of the lock cylinder core into the locked position.

6. The padlock in accordance with claim 1 , wherein the pin has first and second engagement elements which are arranged off-center on an end face of the pin facing the lock cylinder and which are oppositely disposed with respect to the axis of rotation of the pin.

7. The padlock in accordance with claim 6 , wherein the first and second engagement elements each have a cross-section of substantially quadrant shape.

8. The padlock in accordance with claim 1 , wherein the blocking plate is pressed into the lock body.

9. The padlock in accordance with claim 1 , wherein the blocking plate has a circular shape with a diameter that corresponds to a diameter of a region of a lock cylinder that includes the lock cylinder core.

10. The padlock in accordance with claim 1 , wherein the blocking plate includes an outer periphery having elevated portions and recesses in an alternating fashion in at least a part thereof.

11. The padlock in accordance with claim 1 , wherein the blocking plate includes an outer periphery having a security against rotation member projecting radially therefrom.

12. The padlock in accordance with claim 1 , wherein the opening in the blocking plate approximately has the shape of a part circle, with the part circle including an angle between 180° and 300°.

13. The padlock in accordance with claim 1 , wherein the shanks of the shackle have different lengths, and the shank having a greater length has a restriction at an end region that faces the lock body.

14. The padlock in accordance with claim 1 , wherein the bridge member has a Z shape with a center part and two shanks projecting therefrom at an angle.

15. The padlock in accordance with claim 14 , wherein marginal regions of the shanks of the bridge member are outwardly disposed with respect to the center part and have the shape of an arc of a circle, with a radius of these arcs being smaller than the radius of the opening of a part circle portion of the blocking plate.

16. The padlock in accordance with claim 1 , wherein a center part has a chamfer in the region of only one of the two shanks which is provided on the side of the center part remote from the respective shank.

17. A padlock comprising:
a lock body;
a shackle with two shanks each having a groove for receipt of a respective part region of a locking element;
a pin configured to be acted on by a lock cylinder core to make a rotational movement for moving the locking elements into a locked position, the pin being biased into the locked position by a spring, and the pin having at least one engagement element configured to cooperate with at least one entrainer formation on the lock cylinder core;
a blocking plate provided between the pin and the lock cylinder core fastened in the lock body and having an opening through which the entrainer formation of the lock cylinder core projects into a plane of the engagement element, with the opening being configured such that a rotational movement of the lock cylinder core is possible and such that a marginal region of the opening forms an abutment engageable with the entrainer formation for restricting rotational movement of the lock cylinder core; and
a selectively removable bridge member inserted between the engagement element and the entrainer formation, the bridge member operable to be inserted through the opening in the blocking plate into the plane of the engagement element;
wherein the pin is arranged entirely outside a plane defined by the blocking plate and has, at jacket surface thereof, a pair of oppositely disposed grooves and another groove having a depth greater than a depth of the pair of oppositely disposed grooves, and
wherein a core play is present between the engagement element and the entrainer formation that allows rotation of the lock cylinder core about a specific angle without the pin co-rotating, and the bridge member, when selectively inserted between the engagement element and the entrainer formation, eliminates the play.

18. The padlock in accordance with claim 17 , further including a tool having a T shape in a front end region with the length of a transverse shank of the T shape being dimensioned such that the transverse shank is movable through the opening of the blocking plate, and wherein the dimensions of the transverse shank in a direction of an axis of rotation of the cylinder core corresponding approximately to a height of at least one of the engagement elements of the pin wherein a connection section between the transverse shank and a remaining tool region is dimensioned such that this connection section is rotatable wit

Assignees

• Fan Wai Kuen
• Garthe Bernhard
• Bremicker Soehne Kg A

Inventors

• Fan Wai Kuen
• Garthe Bernhard

Classifications

• Y10T70/452

  Sliding · CPC title

• E05B67/24 Primary

  with built- in cylinder locks · CPC title

• E05B67/22 Primary

  Padlocks with sliding shackles, with or without rotary or pivotal movement · CPC title

• E05B67/00

  Padlocks (permutation locks E05B37/00); Details thereof · CPC title

• Y10T70/8432

  For key-operated mechanism · CPC title