Pressure release slide latch mechanism

Patent metadata

Field	Value
Publication number	US-9750347-B2
Application number	US-201414281643-A
Country	US
Kind code	B2
Filing date	May 19, 2014
Priority date	Apr 30, 2012
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A pressure release slide latch mechanism for a drawer slide assembly comprises an outer slide, an intermediate slide mounted in the outer slide, and an inner slide mounted in the intermediate slide, a channel plate having a track portion and a guide block attached to the outer slide and a carriage slidingly engaged and biased along the track portion. A pin of a follower pivotally attached to the inner slide engages the guide block to releasably maintain the drawer slide assembly in a closed position and releases upon an inward force applied to the drawer slide assembly. A set of chamfers is formed on the pressure release slide latch mechanism to prevent binding of the drawer slide assembly.

First claim

The invention claimed is:

1. A drawer slide assembly comprising:
an outer slide member;
an intermediate slide member telescopically mounted to the outer slide member;
an inner slide member telescopically mounted to the intermediate slide member;
a pressure release slide latch mechanism between the outer slide member and the inner slide member;
a set of chamfers integrally formed on the pressure release slide latch mechanism;
the pressure release slide latch mechanism further comprising:
a follower, having a pin extending from a body, pivotally connected to the inner slide member;
a track connected to the outer slide member;
a guide block adjacent the track and having a set of channels releasably engaged with the pin;
a carriage slidably engaged with the track; and,
a biasing means, creating a bias between the carriage and the track;

whereby the set of chamfers slidably engage the intermediate slide member and the inner slide member as the intermediate slide member and the inner slide member move to and from a locked position with respect to the outer slide member.

2. The drawer slide assembly of claim 1 , wherein each chamfer of the set of chamfers further comprises:
a chamfer angle; and,
a chamfer length positioned at the chamfer angle.

3. The drawer slide assembly of claim 1 , wherein the set of chamfers further comprises:
a first subset of chamfers integrally formed on the guide block;
a second subset of chamfers integrally formed on the carriage, adjacent the first subset of chamfers; and,
a third subset of chamfers integrally formed on the track, adjacent the intermediate slide member.

4. A drawer slide assembly comprising:
an outer slide member;
an intermediate slide member telescopically mounted to the outer slide member;
an inner slide member telescopically mounted to the intermediate slide member;
a follower pivotally connected to the inner slide member;
a track connected to the outer slide member;
a guide block adjacent the track and releasably engaged with the follower;
a carriage slidingly engaged with the track;
a biasing means, creating a bias between the carriage and the track;
a first set of chamfers integrally formed on the guide block;
a second set of chamfers integrally formed on the carriage;
a third set of chamfers integrally formed on the track;
whereby the first set of chamfers engage the second set of chamfers to maintain slidable engagement between the carriage and the guide block; and,
whereby the third set of chamfers engage the intermediate slide member to maintain slidable engagement between the intermediate slide member and the track.

5. The drawer slide assembly of claim 4 , wherein the guide block further comprises:
a ramp;
a plurality of channels adjacent the ramp;
a plurality of redirecting surfaces adjacent the ramp and the plurality of channels;
a latch member adjacent the plurality of channels; and
wherein the plurality of redirecting surfaces and the latch member define the plurality of channels.

6. The drawer slide assembly of claim 5 , further comprising a guide slot integrally formed in the inner slide member and wherein the follower further comprises:
a pin connected to the follower;
a guide post connected to the follower and extends into and slidingly engages with the guide slot;
whereby the guide slot and the guide post control a pivotal movement of the follower.

7. The drawer slide assembly of claim 6 , wherein a set of dimensions of the guide slot limit an arcuate path through which the follower pivotally moves thereby enabling the pin to consistently engage the ramp.

8. The drawer slide assembly of claim 4 , further comprising a fourth set of chamfers integrally formed on the carriage, opposite the second set of chamfers and slidably engaged with the inner slide member.

Assignees

• Hardware Resources Inc

Inventors

• Nuckolls Grant

Classifications

• A47B88/463 Primary

  self-opening · CPC title

• Y10T29/49

  Method of mechanical manufacture · CPC title

• Y10T29/49764

  with testing or indicating · CPC title

• A47B88/40 Primary

  Sliding drawers; Slides or guides therefor · CPC title

• A47B88/453

  Actuated drawers · CPC title