Box latch

Patent metadata

Field	Value
Publication number	US-11480205-B2
Application number	US-201916378941-A
Country	US
Kind code	B2
Filing date	Apr 9, 2019
Priority date	Oct 26, 2018
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

The present invention provides a box latch. The box latch is provided with two wedge-shaped pins symmetrically arranged around its center, and the two wedge-shaped pins are movable into a wedge-shaped notch formed by mating parts of two spliced adjacent boxes and mating with the wedge-shaped pin to lock the two adjacent boxes. The two wedge-shaped pins are symmetrically arranged around its center such that only one box latch is required to lock two adjacent boxes together, reducing the number of splicing steps and box latches, further saving manpower and material resources. In addition, the wedge-shaped pin and the wedge-shaped notch are shaped and configured to mate with each other such that self-locking occurs when they are locked, thus providing a stable connection of the boxes.

First claim

What is claimed is:

1. A box latch, characterized in that a wedge-shaped pin is arranged in the box latch,
wherein the wedge-shaped pin is movable into a wedge-shaped notch formed by mating parts of two spliced adjacent boxes and mating with the wedge-shaped pin to lock the two adjacent boxes,
wherein the box latch further comprises
receiving cavities symmetrically arranged on both sides of the box latch for receiving the mating parts of the box, and
a latch cover arranged on the top of the box latch,

side stops mating with the receiving cavities and symmetrically arranged on both sides of the latch cover, and
a strip-shaped groove arranged at the bottom surface of the wedge-shaped pin, a strip mating with the strip-shaped groove and arranged in the box latch,
wherein the wedge-shaped pin with the strip-shaped groove moves along the strip,
wherein the side stops are movable into the receiving cavities.

2. The box latch according to claim 1 , wherein two wedge-shaped pins symmetrically arranged around the center of the box latch are included.

3. The box latch according to claim 1 , further comprising slots mating with the side stops and arranged symmetrically on both sides of the latch cover,
a stop cover fixed on the top of the slots,
an elastic member arranged inside the slot, having one end connecting to the stop cover and the other end connecting to the side stop,
wherein the elastic member causes the side stops to return to the end of the receiving cavity away from the latch cover when the box latch is unlocked.

4. The box latch according to claim 2 , further comprising a driving member coupled to the two wedge-shaped pins respectively, wherein rotation of the driving member enables linear motion of the wedge-shaped pins towards both ends of the box latch.

5. The box latch according to claim 4 , wherein the driving member is a slider-crank mechanism,
wherein the slider-crank mechanism comprises a driving part and a driven part, and the driving part is provided with first protrusions arranged symmetrically at both ends on its upper surface,
wherein two driven parts symmetrically arranged around the center of the driving part are included, and a through hole that mates with the first protrusion is arranged at one end of each of the driven parts, and
wherein a second protrusion is arranged at one end of the wedge-shaped pin, and a through hole that mates with the second protrusion is arranged at the other end of each of the driven parts.

6. The box latch according to claim 5 , further comprising a driving knob,
wherein the box latch is provided with a through hole that enables the driving knob to pass therethrough,
wherein one end of the driving knob passes through the through hole and permanently couples to the driving part at a point between the two first protrusions; and
wherein the driving knob drives the driving part to rotate.

7. The box latch according to claim 1 , further comprising a positioning groove mating with a positioning member of the box and arranged at the bottom surface of the box latch.

8. The box latch according to claim 3 , further comprising a positioning groove mating with a positioning member of the box and arranged at the bottom surface of the box latch.

9. The box latch according to claim 6 , further comprising a positioning groove mating with a positioning member of the box and arranged at the bottom surface of the box latch.

Assignees

• Unilumin Group Co Ltd

Inventors

• He Jinfeng
• Deng xinhan

Classifications

• F16B2/14

  using wedges · CPC title

• F16B5/0088 Primary

  with locking means moving substantially perpendicular to the main plane, e.g. pins, screws · CPC title

• F16B21/18

  with circlips or like resilient retaining devices, {i.e. resilient in the plane of the ring or the like}; Details (spring-washers for locking nuts F16B39/24; adjusting rings F16B43/00) · CPC title

• F16B5/0024

  the sheets, plates or panels having holes, e.g. for dowel- type connections · CPC title

• F16B5/0056 Primary

  by moving the sheets, plates or panels or the interlocking key perpendicular to the main plane · CPC title