Plate-type utility knife

Patent metadata

Field	Value
Publication number	US-9770834-B2
Application number	US-201414369999-A
Country	US
Kind code	B2
Filing date	Jan 7, 2014
Priority date	Jan 7, 2014
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

The present invention discloses a plate-type utility knife comprising a blade carrier, a blade structure and a cover plate, wherein, the blade structure is mounted on the front part of the blade carrier, between the blade carrier and the cover plate, the cover plate makes the blade structure fixed on the blade carrier. The blade carrier includes a main blade carrier plate and a front blade carrier plate, the front blade carrier plate is located in front of the main blade carrier plate, a vacancy that contains the blade structure is arranged on the front side of the main blade carrier plate, the blade structure is arranged in the vacancy, a space for containing the cover plate is arranged on the front side of the front blade carrier plate, the cover plate is mounted in the space. The blade carrier includes a back blade carrier plate, the main blade carrier plate is located between the front blade carrier plate and the back blade carrier plate.

First claim

The invention claimed is:

1. A plate-type utility knife, comprising a blade carrier, a blade structure and a cover plate, wherein, the blade structure is mounted on a front part of the blade carrier, between the blade carrier and the cover plate, and the cover plate can openably fix the blade structure on the blade carrier, wherein, the blade carrier comprises a main blade carrier plate and a front blade carrier plate, and the front blade carrier plate is located in front of the main blade carrier plate; a vacancy that contains the blade structure is arranged on a front side of the main blade carrier plate, and the blade structure is arranged in the vacancy; a space for containing the cover plate is arranged on a front side of the front blade carrier plate, and the cover plate is mounted in the space.

2. The plate-type utility knife as claimed in claim 1 , wherein, the blade carrier further comprises a back blade carrier plate, and the main blade carrier plate is located between the front blade carrier plate and the back blade carrier plate.

3. The plate-type utility knife as claimed in claim 2 , wherein, the main blade carrier plate, the front blade carrier plate, and the back blade carrier plate are respectively integrally-formed plate structure.

4. The plate-type utility knife as claimed in claim 3 , wherein, a protruding cover plate axis is arranged on the main blade carrier plate, the main blade carrier plate is connected with the cover plate via the cover plate axis, and the cover plate is rotatable around the cover plate axis.

5. The plate-type utility knife as claimed in claim 4 , wherein, the cover plate axis is arranged on the main blade carrier plate, at a lower edge of the blade structure, distal from a knife head.

6. The plate-type utility knife as claimed in claim 5 , wherein, the blade carrier has a lock catch extending to a surface of the cover plate.

7. The plate-type utility knife as claimed in claim 6 , wherein, the lock catch is located on a top of the blade carrier, and the lock catch is fixed on the blade carrier via a lock catch axis which is fixed on an upper edge of the blade carrier that is above a blade.

8. The plate-type utility knife as claimed in claim 7 , wherein, the lock catch is of a U-shaped channel structure, holes for mounting the lock catch axis are arranged on lateral parts of the U-shaped channel structure, and the lock catch is mounted on opposing two sides of the blade carrier via the lock catch axis.

9. The plate-type utility knife as claimed in claim 8 , wherein, the width of the U-shaped channel structure is same as the blade carrier.

10. The plate-type utility knife as claimed in claim 9 , wherein, the U-shaped channel structure has a protuberance or a recess on the side that is matched with a recess or a protuberance at the corresponding place on the cover plate.

11. The plate-type utility knife as claimed in claim 10 , wherein, the U-shaped channel structure has a handle that extends transversely from the side of the U-shaped channel structure at the bottom of the side of the U-shaped channel structure.

12. The plate-type utility knife as claimed in claim 8 , wherein, the blade structure is a blade, the blade has notches on the back thereof, and the main blade carrier plate has integrally-formed protuberances at places corresponding to the notches of the blade, capable of being buckled in the notches.

13. The plate-type utility knife as claimed in claim 5 , wherein, an upside of the cover plate extends to the upper edge of the main blade carrier plate above the blade structure, the part of the cover plate that is above the blade structure is defined as an extending part, and a hole is inside of the extending part; a fixing part is located at a place on the main blade carrier plate that is corresponding to the hole, the fixing part is connected to the main blade carrier plate and the fixing part has a protuberance, the protuberance is matched with the hole and reaches into the hole.

14. The plate-type utility knife as claimed in claim 13 , wherein, the blade carrier has a position restricting plate that is mounted at an outside of the extending part of the cover plate, making the extending part of the cover plate restrict in the position restricting plate.

15. The plate-type utility knife as claimed in claim 14 , wherein, the fixing part has a triggering part which is adjacent to the protuberance, the position restricting plate has a through-hole at a place that is corresponding to the triggering part, and the triggering part extends to an outside of the through-hole; the fixing part has a spring element arranged on one side of the protuberance and the triggering part, and the spring element extends to a channel on the main blade carrier plate which is at a place corresponding to the fixing part.

16. The plate-type utility knife as claimed in claim 5 , wherein, the blade structure comprises a sliding blade carrier that can move forward and backward along the blade carrier, a sliding control element that extends from a top of the sliding blade carrier to an upside of an outside of the main blade carrier plate, and a blade which is mounted on the sliding blade carrier, thus, the extending and retracting of the sliding blade carrier and the blade can be controlled by moving the sliding control element.

17. The plate-type utility knife as claimed in claim 16 , wherein, the blade has notches on the back thereof, and the sliding blade carrier has protuberances at places corresponding to the notches of the blade, for fixing the blade.

18. The plate-type utility knife as claimed in claim 17 , wherein, the sliding control element has a grip region and a control rod, the grip region is above the blade carrier and the control rod extends from the grip region down to the sliding blade carrier; the sliding blade carrier has a receiving recess on an upper part thereof for receiving the control rod of the sliding control element.

19. The plate-type utility knife as claimed in claim 18 , wherein, a spring is arranged between a lower part of the control rod and the receiving recess of the sliding blade carrier, the lower part of the control rod is a lateral protuberance towards the main blade carrier plate, the lateral protuberance is corresponding to an upper part of the control rod, and spaced recesses are arranged at corresponding places of the main blade carrier plate.

20. The plate-type utility knife as claimed in claim 3 , wherein, the cover plate and the blade carrier can be connected by screw fastening, or in a snap-fit way.

21. The plate-type utility knife as claimed in claim 1 , wherein, an overall thickness of the plate-type utility knife is greater than or equals to 1 mm and less than or equals to 10 mm.

22. The plate-type utility knife as claimed in claim 21 , wherein, the overall thickness of the plate-type utility knife is greater than or equals to 3 mm and less than or equals to 7 mm.

23. The plate-type utility knife as claimed in claim 22 , wherein, the overall thickness of the plate-type utility knife is 5 mm.

Assignees

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

Inventors

• Wang Weiyi

Classifications

• B26B5/001 Primary

  with blades being slid out of handle immediately prior to use · CPC title

• B26B5/00

  Hand knives with one or more detachable blades · CPC title

• B26B1/08

  with sliding blade {(with detachable blades B26B5/001)} · CPC title

• B26B1/10

  Handles · CPC title