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drawer-slide-mechanism-definition-image Thus the weight of the drawer operates a secondary lever "90 so that the continued rolling engagement of the roller 87 with track 32 through gears 88, and 98, positively and continuously drives the roller 97 dedinition the double thickness drawer flange rail drawer slide mechanism definition image to be pinched against the roller drawer slide mechanism definition image move the back of the drawer 5'0 sllide the outside edge of the track 32' and outside the cabinet beyond the jamb 27 thereof as shown in FIG. Typically ball bearing slides are made drawer slide mechanism definition image carbonized or stainless steel. For purposes of clarity, the mechanism is illustrated in a typical three member ball bearing slide application with C-shaped members. This cradle 70 comprises a pair of parallel channel strips 71 see FIG. The slides are slidably coupled by bearings riding in the raceways. Often the elongate member, or latch member, is mounted near what is the rear of the inner slide member so that the latch member is approximate a forward end of the intermediate slide member when the inner slide member is extended from the intermediate slide member.

For purposes of clarity, the mechanism is illustrated in a typical three member ball bearing slide application with C-shaped members. The mechanism is adaptable to slide assemblies with more members, or with fewer members.

As illustrated in FIG. The intermediate member in turn is slidably connected to an outer member As illustrated, the slides are formed of elongate longitudinal webs having bearing raceways along their longitudinal margins.

The slides are slidably coupled by bearings riding in the raceways. In alternative embodiments the slides are friction slides, slidably coupled by contact points along the slides. As illustrated, the inner member 19 includes a latch. The latch, in the embodiment described, includes an elongate member 15 pivotably or rotatably coupled near one end of the inner slide member.

The latch includes stop surfaces, which are part of a cutout of the elongate member. The stop surfaces are adapted to engage, or lock, onto a lanced out tab 16 formed in the intermediate member Release of the slide for closure or disconnecting for service is accomplished by rotating latch 15 away from tab Often the elongate member, or latch member, is mounted near what is the rear of the inner slide member so that the latch member is approximate a forward end of the intermediate slide member when the inner slide member is extended from the intermediate slide member.

The lanced out tab, therefore, is placed near the forward end of the intermediate member, with the latch locking the slides in the open position. To increase the safety in releasing the latch, a mechanism 20 is attached to a drawer member 19 with shoulder rivets 21 , as illustrated in FIG. The shoulder rivets extend through linear slots in the mechanism. The use of shoulder rivets allows the mechanism to be moved, or translated, along the length of the inner slide member.

Pushing the mechanism, particularly along a tab 28 at a forward end of the mechanism, causes an end 23 of the mechanism to press against a leading edge 24 of a latch member This results in rotation of the latch member such that stop surfaces formed by a cutout 25 in the latch member do not engage a tab of the intermediate slide member not shown in FIG.

Depending upon the shape of the cutout, or notch, in the latch member, and the amount of push applied, the slide can be closed or disconnected.

For example, in one embodiment a forward stop surface, which restricts rearward movement of the slide member, clears the tab prior to a rearward stop surface, which restricts forward movement of the slide member. Accordingly, greater pivoting of the latch is required to allow the inner member to move forward and disconnect from the other slide members. Further, as illustrated in FIG.

In addition, in one embodiment, a register 27 on the mechanism is used to prevent sufficient rotation of the latch through application of the mechanism to allow for sufficient rotation of the latch to allow for disconnect. Instead, sufficient rotation for disconnect is accomplished by hand. A mechanism 30 can also be designed to activate a spring type latch arm 31 mounted on an intermediate member 39 , as shown in FIG.

Such motion results in cutouts of the latch being freed of contact with a tab extending towards the web from another slide member.

The spring latch pushes the mechanism back to its original position. The simplicity of the design results in a low cost. Return action of the release mechanism is provided by the spring qualities of the latch. However, for heavy duty applications or to satisfy a user's preference, a spring 35 can be installed between the mechanism 30 and a lanced tab 36 on the member Beneficially, the spring type latch includes both upper 37 and lower 38 cutouts, thereby allowing the latch and slide member to be used with both right and left hand slides; i.

In the embodiment of FIG. The latch includes a cutout 53 which is adapted to receive a tab extending from another slide member. The latch is bent, as in the embodiment of FIG. The latch also includes a second cutout The second cutout is adapted to receive a protrusion 59 extending from the mechanism. Grooved drawer slides are generally intended for living rooms, bedrooms, and home offices, and thus have extremely smooth lateral motion.

Handed drawer slides are designed for usage on either the left or right. Unhanded, or non-handed drawer slides can be used on either side and are more popular. Heavy Duty Drawer Slides. Heavy duty drawer slides range in size from 10" up to 60", with a weight capacity up to lb, lb, and typically up to lbs. Heavy duty drawer slides are commonly used in applications that demand quick access to heavy equipment and tools.

Heavy duty drawer slides are commonly found within industrial settings like machinery, safety gates, motion guides, tool box drawers, commercial restaurant equipment, freezers, fixtures for automotive Heavy duty drawer slides range in size from 10" up to 60", with a weight capacity up to lb, lb, and typically up to lbs.

Additionally heavy duty locking drawer slides are commonly used for mobile applications where stability after accessing an item is absolutely necessary. Thus, heavy duty locking drawer slides can commonly be found in service utility truck beds, fire trucks, SWAT vehicles, expedition vehicles, tool boxes for truck beds, slide outs for recreational vehicle RV basements, trailers, yachts, and other applications that require the drawer stay secure.

A hold-in is a type of detent specifically designed to keep a slide closed until you exert enough force to open it. A hold-out is a type of detent designed to ensure that the drawer is kept open until you exert enough force to close it fully. The distance between the side of the drawer box and the cabinet where the slide is attached. This is often a limiting factor in replacing slides, but is key to calculate when figuring out what kind of slide you will need.

Learn more about the importance of installation width from our Definitive Drawer Slide Mechanism Definition Tab Guide to Drawer Slides. Is the part of the drawer slide between the inner, or drawer member, that attaches to the drawer, and the outer chassis, or cabinet member that attaches to the cabinet itself.

The Intermediate member is essential for keeping the ball bearings functioning smoothly. Keyboard Slide. Working long hours at an uncomfortable work station is an unnecessary evil that too many Americans unfortunately opt for. OVIS offers an affordable and adjustable keyboard tray so that users can quickly and cheaply fix any issues with typing at an uncomfortable desk. Drawer removal is achieved by releasing a lever and pulling the drawer away from the cabinet.

The load rating is the capacity for a slide to withstand a certain amount of weight safely and repeatedly as specified by the manufacturer when fully extended. Factors such as deflection and dynamic load are used to calculate this figure.

A lock-in is the mechanism which keeps a slide locked close until you pull the lever to release it. A lock-out is the mechanism which keeps a slide locked open until you pull the lever to release it. Over Travel. Over travel, or over extension drawer slides open beyond full extension, giving you total visibility and access for your tools. Over-travel drawer slides are especially ideal in situations where a large countertop or some other ledge might keep you from being able to full see the contents of the drawer.

The slide has only 2 members and as a result has an under-travel because it has no intermediate member. Progressive movement is a result of all slide members moving simultaneously. This type of movement provides extremely smooth, quiet movement. A rail disconnect mechanism on a drawer slide provides a rail with latch that usually rests on top of the drawer slide that allows you to easily lift a drawer from a slide.

Screw head clearance refers to the internal distance, or clearance, between a slides inner member and its chassis. This allows you to figure out what the maximum fastener height that can be accommodated inside of a drawer slide unit without interfering with the motion of the ball retainers.

Thus the wheel and belt are positively driven by the wheel and wheel through belt in turn pinches the lower side of the rail 56 to push it up against the roller to insure uniform and positive extension of the drawer 50 beyond the end 32 of the track If more or less extension is required, a corresponding greater or lesser spacing between the wheels and are required and correspondingly a longer or shorter belt Otherwise the operation for the extension of the modified embodiment shown in FIG.

Thus the drawer 58 is carried on the top of the lower rollers 81, 97 and 87 and is prevented from tilting out of the cabinet by the roller on the slide cradle The roller 82 on the upper rear end of the channel 71 of the slide cradle 78 prevents the top of the cradle from rubbing against the top of the channel track 31 when the drawer is extended as shown in FIG. Accordingly a smooth, uniform travel of a heavy thick front 51 file drawer 50 may be eifected from its completely closed position to its completely extended position beyond the front face of the cabinet 28 so the full length of the drawer 58 may be used without difficulty or without changing the uniform motion of the slide cradle 70 or releasing any of the stops.

While there is described above the principles of this invention in connection with specific apparatus, it is to be clearly understood that this description is made only by way of example and not as a limitation to the scope of this invention.

A a pair of parallel channel tracks having 0- shaped cross sections attached to said side walls with their open sides facing each other,. II a drawer movable between said side walls parallel to said tracks from a position completely within said pocket to a position Completely outside of said pocket, I v. A a pair of double faced rails on opposite sides of said drawer movable parallel to and projecting between the flanged edges of said tracks,. III a slide cradle between said drawer and said chamber comprising:.

A a pair of parallel strips movable in said track between said tracks and said rails,. B spanner means for connecting said strips together around one side of said drawer,.

C separate stop means on said cradle for abutment with said stop on said drawer and said pivoted pawl stop on said track, and. D plastic rollers mounted on said strip for rolling engagement between said tracks and said rails for supporting said drawer and cradle and for movement of said cradle at half the speed and distance of said drawer. A drawer slide mechanism according to claim 1 wherein said spanner means for connecting said side strips together comprises a wide central member extending beneath said drawer.

A drawer slide mechanism according to claim 1 wherein said spanner means comprises a plurality of spanner strips at least one of which is connected between adjacent ends of said strips. A drawer slide mechanism according to claim 1 wherein said stop on said drawer projects from said rails connected to said drawer. A drawer slide mechanism according to claim 1 wherein said rails on said drawer have oppositely extending flanges, one being double thickness for supporting said drawer on said rollers and the other extending beneath the bottom of said drawer, and means for attaching said rails both along the sides and bottom of said drawer.

A drawer slide mechanism according to claim 1 wherein said channel tracks include ribbed extension flanges along their lower edges for preventing twist due to stresses of the weight of said cradle, and drawer rolling therealong.

A drawer slide mechanism according to claim 1 wherein said cradle includes means for extending said drawer uniformly with themovement of said cradle beyond the opening of said pocket.

A drawer slide mechanism according to claim 7 wherein said extending means comprises on each said cradle strip a pair of geared rollers at least one of which is always in contact with its corresponding channel track and at least the other of said pair of rollers is always in contact with its corresponding said drawer rail.

A drawer slide mechanism according to claim 8 wherein said two geared rollers are driven by an intermediate gear. A drawer slide mechanism according to claim 8 wherein said geared rollers are mounted on a pivoted lever. A drawer slide mechanism according to claim 10 wherein said lever is flush with the web of said strip. A drawer slide mechanism according to claim 10 wherein said strips include means and flanges for guiding and restricting the movement of said lever. A drawer slide mechanism according to claim 8 wherein said cradle strips include an additional central roller opposite said other geared roller for engaging the other side of said rail flange on said drawer.

A drawer slide mechanism according to claim 13 wherein said rollers are composed of molded plastic with ball bearing inserts mounted on stub shafts connected with said cradle strips.

I a cabinet having an opening and side walls extending therefrom between which side walls a drawer may slide,. A a pair of parallel channel tracks having facing open C-shaped cross-sections attached to said side Walls and a first stop mounted on one of said tracks,.

II a drawer movable between said side walls parallel to said track through said opening from a position completely within said cabinet to a position completely outside said cabinet,. A a pair of double faced rails on opposite sides of said drawer moving parallel and projecting between the flanged edges of said tracks,. III a slide cradle between said drawer and said cabinet comprising:.

A a pair of parallel side strips having flange portions along their lower edges and being movable in said track between said track and said rails,.

B means for connecting said side strips together around one side of Drawer Slide Mechanism Definition Notation said drawer,. C separate stop means on said cradle for abutment with said second stop on said drawer and said first stop on said track,.

D rollers at opposite ends of each of said strips for engagement with both faces of said rails and the inside of the flanges of said tracks for moving said drawer in Drawer Slide Mechanism Definition Guide and out of said chamber at twice the speed and distance that said cradle moves along said tracks,. E a cut-out portion and flange portion in the central portion of each of said strips, said flange portions including extensions near the ends of said cut-out portions,.

F a pivoted lever mounted in said cut-out portions of each of said strips,. G three additional rollers located at the center of each of said strips, at least two of said additional rollers being mounted on said lever for supporting said cradle,. H means for gearing said pair of additional rollers together, and. I an enclosure having a pocket with spaced parallel inner side walls extending therealong between which a drawer may slide,.

A a pair of parallelchannel tracks having 0- shaped cross sections attached to said side walls with their open sides facing each other,. II a drawer movable between said side walls parallel to said tracks from a position completely within said pocket to a position completely outside of said pocket,. C separate stop means on said cradle for abutment with said stop on said drawer and said pivoted pawl stop on said track,.

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