Open-close device

Patent metadata

Field	Value
Publication number	US-11583979-B2
Application number	US-201716628649-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	Apr 28, 2017
Publication date	Feb 21, 2023
Grant date	Feb 21, 2023

Abstract

The present invention provides an open-close device, including a first member, a second member, a third member and a fourth member; the second member is rotatably connected to the first member, the third member is rotatably connected to the first member, the fourth member is rotatably connected to the second member and rotatably connected to the third member; the open-close device further includes an angle adjusting device which is provided at a joint between the third member and the first member, for adjusting the bending angle of the third member with respect to the first member.

First claim

The invention claimed is:

1. An open-close device, comprising:
a first member;
a second member, rotatably connected to the first member;
a third member, rotatably connected to the first member; and
a fourth member, rotatably connected to the second member and rotatably connected to the third member;
wherein the open-close device comprises:
an angle adjusting device which is provided at a joint between the third member and the first member, for adjusting the bending angle of the third member with respect to the first member;
a third axle pin provided at a joint between the fourth member and the second member, wherein the angle adjusting device comprises a first gear shifting portion and a third gear shifting portion, the first gear shifting portion comprising a first clamping plate and a second clamping plate arranged so that a clamping plate gap is formed between the first clamping plate and the second clamping plate, and the third gear shifting portion is inserted to the clamping plate gap;
wherein the first clamping plate comprising:
a first gear slot recessed into an outer surface of the first clamping plate;
two or more first gear holes penetrating through the bottom of the first gear slot and at least one first communicating hole penetrating through the bottom of the first gear slot to communicate the two or more first gear holes;
the second clamping plate comprising:
a second gear slot recessed into an outer surface of the second clamping plate;
two or more second gear holes penetrating through the bottom of the second gear slot, each second gear hole respectively corresponding to one first gear hole; and
at least one second communicating hole penetrating through the bottom of the second gear slot to communicate the two or more second gear holes, wherein the third gear shifting portion comprises gear axle holes corresponding to the first gear hole and the second gear hole.

2. The open-close device according to claim 1 , wherein
the first member successively comprises a first clamping portion, a first rotating portion and a first gear shifting portion;
the second member successively comprises
a second clamping portion disposed opposite to the first clamping portion;
a second rotating portion which is rotatably connected to the first rotating portion by a first axle pin; and
a second gear shifting portion disposed opposite to the first gear shifting portion.

3. The open-close device according to claim 1 , wherein
the third member successively comprises a first handheld portion, a third gear shifting portion and a third rotating portion;
the fourth member successively comprises
a second handheld portion disposed opposite to the first handheld portion;
a fourth gear shifting portion disposed opposite to the third gear shifting portion; and
a fourth rotating portion which is rotatably connected to the third rotating portion by a second axle pin.

4. The open-close device according to claim 1 , further comprising:
another angle adjusting device which is provided at the joint between the fourth member and the second member, for adjusting the bending angle of the fourth member with respect to the second member.

5. The open-close device according to claim 4 , wherein
the angle adjusting device comprises a first gear shifting portion and a third gear shifting portion, or, comprises a second gear shifting portion and a fourth gear shifting portion;
the first gear shifting portion or the second gear shifting portion comprises a first clamping plate and a second clamping plate;
a clamping plate gap is formed between the first clamping plate and the second clamping plate;
the third gear shifting portion or the fourth gear shifting portion is inserted to the clamping plate gap.

6. The open-close device according to claim 1 , wherein the angle adjusting device further comprises:
a gear shaft, successively inserted into the second gear hole, the gear axle hole and the first gear hole; and
a press key fixedly connected to the gear shaft.

7. The open-close device according to claim 6 , wherein the gear shaft comprises:
a gear shaft lever;
a gear shaft base provided at one end of the gear shaft lever, corresponding to the second gear slot; and
a gear shaft threaded groove recessed into the surface of the other end of the gear shaft lever;
the press key comprises:
a press plate corresponding to the first gear slot; and
a press screw protruding from the surface of the press plate, and in threaded connection to the gear shaft threaded groove.

8. The open-close device according to claim 7 , wherein
a width of the gear shaft lever is greater than that of the first communicating hole; and less than that of the second communicating hole;
a width of the press screw is less than that of the first communicating hole.

9. The open-close device according to claim 7 , wherein the angle adjusting device further comprises:
a compression spring, one end of which is tangent to a bottom surface of the first gear slot, and the other end of which is tangent to a surface of the press plate.

10. The open-close device according to claim 7 , wherein the angle adjusting device further comprises:
an elastic sheet, one end of which is fixedly connected to the third member, and the other end of which is attached to the surface of the gear shaft base, or fixedly connected to the gear shaft base.

11. The open-close device according to claim 10 , wherein the elastic sheet comprises:
an elastic sheet fixed portion fixedly connected to the first handheld portion by rivets;
an elastic sheet pressure portion tangent to the surface of the gear shaft base, or fixedly connected to the gear shaft base; and
an elastic sheet bending portion, one end of which is connected to the elastic sheet fixed portion, and the other end of which is connected to the elastic sheet pressure portion.

12. The open-close device according to claim 1 , wherein the first clamping plate is provided with:
two or more third gear holes penetrating through the first clamping plate; and
at least one third communicating hole penetrating through the first clamping plate and communicating two or more third gear holes;
the second clamping plate is provided with:
two or more fourth gear holes penetrating through the second clamping plate, each fourth gear hole respectively corresponding to one third gear hole; and
at least one fourth communicating hole penetrating through the second clamping plate, to communicate two or more fourth gear holes;
wherein the third gear shifting portion is provided with gear shaft holes corresponding to the third gear hole and the fourth gear hole.

13. The open-close device according to claim 12 , wherein the angle adjusting device further comprises:
a gear shaft successively inserted into the fourth gear hole, the gear shaft hole and the third gear hole; and
a rotating key fixedly connected to the gear shaft.

14. The open-close device according to claim 13 , wherein the gear shaft comprises:
a gear shaft lever;
a gear shaft base provided at one end of the gear shaft lever and attached to the outer surface of the second clamping plate; and
a rotating key mounting slot recessed into the surface of the other end of the gear shaft lever;
the rotating key comprises:
a knob attached to the outer surface of the first clamping plate; and
a rotating key mounting stem fixedly mounted into the rotating key mounting slot.

15. The open-close device according to claim 14 , wherein
the fourth gear hole is provided with at least one positioning notch at its inner side wall;
the gear

Assignees

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

Inventors

• Wang Min

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

• B25B7/14 Primary

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

• B25B7/12

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

• B23D21/06

  Hand-operated tube-cutters · CPC title

• B26D3/169

  Hand held tube cutters · CPC title