초록 ▼

A chassis lock (32) for drawer slide (12) is provided by a slot (20) and a rotary lock member (34). The rotary lock member (34) has a disk-shaped body (36) with an arcuately shaped cutout portion defining a cam follower surface (38). A stop protuberance (42) extends from the rotary lock member (34)

A chassis lock (32) for drawer slide (12) is provided by a slot (20) and a rotary lock member (34). The rotary lock member (34) has a disk-shaped body (36) with an arcuately shaped cutout portion defining a cam follower surface (38). A stop protuberance (42) extends from the rotary lock member (34) with opposite ends (47, 49) which locate the rotary lock member (34) in an open position and a closed position. A torsion spring (50) urges the rotary lock member (34) into the closed position. The weight of a drawer is applied through a mounting lug (30) to the cam follower surface (38), to move the rotary lock member (34) to the open position which aligns the cam follower surface (38) for passing the mounting lug (30) into a lock section (26) of the slot (20). When in the closed position, the disk-shaped portion (36) of the rotary lock member (34) prevents removal of the mounting lug (30) from within the lock section (26) of the slot (20).

대표청구항 ▼

What is claimed is: 1. In a drawer slide having first slide member and a second slide member, the first slide member being slidably extensible from within the second slide member from a retracted position to an extended position in a cantilevered arrangement, the improvement comprising: a drawer mo

What is claimed is: 1. In a drawer slide having first slide member and a second slide member, the first slide member being slidably extensible from within the second slide member from a retracted position to an extended position in a cantilevered arrangement, the improvement comprising: a drawer mounting member; a slot formed into the first slide member, said slot having an entrance section formed into an edge of the first slide member for receiving said drawer mounting member into said slot, and a lock section for receiving said drawer mounting member from said entrance section; a rotary lock member having a main body portion, a follower portion and a rotary stop portion, said rotary lock member rotatably mounted to said first slide member for rotating about an axis relative to main body portion between an open position and a closed position, said follower portion facing outward of said main body portion, and said rotary stop portion disposed in cooperative relation to said first slide member for locating said rotary lock member in said open position and said closed position; a biasing member engaging between the first slide member and said rotary lock member for urging said rotary lock member into said closed position; said main body portion and said follower portion adapted such that when said rotary lock member is disposed in said closed position, said main body portion extends adjacent said drawer mounting member and prevents removal of said drawer mounting member from said lock section of said slot, and said follower portion extends adjacent to said entrance section of said slot disposed to engage said drawer mounting member when disposed in said entrance section of said slot, such that movement of said drawer mounting member from said entrance section into said lock section of said slot rotates said rotary lock member from said closed position to said open position, against said biasing member; and said main body portion and said follower portion adapted such that when said rotary lock member is disposed in said open position, said main body portion is moved aside of said drawer mounting member and said follower portion is aligned adjacent said slot for passing said drawer lock member from said entrance section into said lock section of said slot, and said follower portion extends aside of said drawer lock member when disposed in said lock section of said slot, such that said biasing member returns said rotary lock member to said closed position with said main body portion disposed adjacent to said drawer mounting member; wherein said rotary stop portion has a forward stop and a rearward stop which engages a forward edge of said first slide member which is formed to define an edge profile having an open position stop and a rearward position stop engaged by respective ones of said forward stop and said rearward stop portion of said rotary stop portion. 2. The drawer slide according to claim 1, wherein said rotary stop portion protrudes from a portion of said main body portion of said rotary lock member on an edge of said main body portion opposite said follower portion. 3. The drawer slide according to claim 1, wherein said rotary lock member has an edge periphery with a portion having protuberances which define a grip surface. 4. The drawer slide according to claim 3, wherein said protuberances defining said grip surface comprise tabs aligned along said edge periphery to define a castellated surface. 5. The drawer slide according to claim 1, further comprising a recess formed into said main body portion of said rotary lock member for receiving said bias member. 6. The drawer slide according to claim 5, wherein said bias member comprises a torsion spring having a spring coils from which extends a first arm portion and a second arm portion, said first arm portion engaging said rotary lock member and said second arm portion engaging said first slide member. 7. The drawer slide according to claim 1, wherein said main body portion of said rotary lock member defines a substantially round, disk shaped member and said follower portion defines a cutout portion into said substantially round, disk shaped member. 8. The drawer slide according to claim 7, wherein said cutout portion defined by said follower portion is arcuately shaped and has a cutout radius which is greater than a radius of said substantially round, disk shaped member defined by said main body portion of said rotary lock member, and first vertical protection from a centerline of said cutout portion is disposed rearward of said axis about which said rotary lock member rotates. 9. A drawer slide having a drawer slide member which is slidably extensible from a retracted position to an extended position, the drawer slide comprising: a drawer mounting lug; a slot formed into the drawer slide member, said slot having an entrance section formed into an edge of the drawer slide member for receiving said mounting lug into said slot, and a lock section for receiving said mounting lug from said entrance section; a rotary lock member rotatably mounted to the drawer slide member adjacent said slot, said rotary lock member having a main body portion, a follower portion and a rotary stop portion, wherein said follower portion faces outward of said main body portion and said rotary stop portion is disposed in cooperative relation to said follower portion for locating said follower portion relative to said slot and said drawer mounting lug in a closed position and an open position; a biasing member engaging the first slide member and said rotary lock member for urging said rotary lock member to move to said closed position; said main body portion and said follower portion adapted such that when said rotary lock member is disposed in said closed position, said main body portion extends adjacent said drawer mounting lug and prevents removal of said drawer mounting lug from said lock section of said slot, and said follower portion extends adjacent to said entrance section of said slot and includes an engagement portion which engages said drawer mounting lug when disposed in said entrance section of said slot, with said engagement portion disposed in offset relation to a projection from said axis about which said rotary lock member rotates such that movement of said drawer mounting lug from said entrance section into said lock section of said slot rotates said rotary lock member from said closed position to said open position, against said biasing member; and said main body portion and said follower portion adapted such that when said rotary lock member is disposed in said open position, said main body portion is moved aside of said drawer mounting lug and said follower portion is aligned adjacent said slot for passing said drawer lock member from said entrance section into said lock section of said slot, and said follower portion extends aside of said drawer lock member when disposed in said lock section of said slot, such that said biasing member returns said rotary lock member to said closed position with said main body portion disposed adjacent to said drawer mounting lug; wherein said main body portion of said rotary lock member defines a substantially round, disk shaped member and said follower portion defines a cutout portion into said substantially round, disk shaped member. 10. The drawer slide according to claim 9, wherein said rotary stop portion protrudes from an inward surface of said main body portion of said rotary lock member, disposed along an edge periphery of said main body portion and opposite said follower portion. 11. The drawer slide according to claim 10, further comprising: said drawer slide member has an edge profile defining a fully closed stop portion and a fully open stop portion, land said rotary stop portion; and said rotary stop portion defining an arcuately shape rib having opposite ends for engaging said fully closed stop portion and said fully open stop portion of said edge profile of said drawer slide to locate said rotary lock member relative to said slot in said drawer slide member. 12. The drawer slide according to claim 11, wherein said rotary lock member has an edge periphery with a portion having protuberances which define a grip surface. 13. The drawer slide according to claim 12, wherein said protuberances defining said grip surface comprise tabs aligned along said edge periphery to define a castellated surface. 14. The drawer slide according to claim 13, further comprising a recess formed into said main body portion of said rotary lock member for receiving said bias member. 15. The drawer slide according to claim 14, wherein said bias member comprises a torsion spring having a spring coils from which extends a first arm portion and a second arm portion, said first arm portion engaging said rotary lock member and said second arm portion engaging said first slide member. 16. The drawer slide according to claim 9, wherein said cutout portion defined by said follower portion is arcuately shaped and has a cutout radius which is greater than a radius of said substantially round, disk shaped member defined by said main body portion of said rotary lock member, and first vertical protection from a centerline of said cutout portion is disposed rearward of said axis about which said rotary lock member rotates. 17. A drawer slide having a drawer slide member which is slidably extensible from a retracted position to an extended position, the drawer slide comprising: a drawer mounting lug; a slot formed into the drawer slide member, said slot having an entrance section formed into an edge of the drawer slide member for receiving said mounting lug into said slot, and a lock section for receiving said mounting lug from said entrance section; a rotary lock member rotatably mounted to the drawer slide member adjacent said slot, said rotary lock member having a main body portion, a follower portion and an arcuately shaped rib, said follower portion facing outward of said main body portion and said rotary stop portion is disposed in cooperative relation to said follower portion for locating said follower portion relative to said slot and said drawer mounting lug when said rotary lock member is disposed in a closed position and an open position; said arcuately shaped rib protruding from an inward surface of said main body portion of said rotary lock member, said arcuately shape rib having opposite ends for engaging a fully closed stop portion and a fully open stop portion of an edge profile of said drawer slide to locate said rotary lock member relative to said slot and the drawer slide member in said closed position and in said open position; a biasing spring engaging the first slide member and said rotary lock member for urging said rotary lock member to move to said closed position; said rotary lock member having an edge periphery with a portion having a plurality protuberances which define a grip surface; said main body portion and said follower portion adapted such that when said rotary lock member is disposed in said closed position, said main body portion extends adjacent said drawer mounting lug and prevents removal of said drawer mounting lug from said lock section of said slot, and said follower portion extends adjacent to said entrance section of said slot and includes an engagement portion which engages said drawer mounting lug when disposed in said entrance section of said slot, with said engagement portion disposed in offset relation to a projection from said axis about which said rotary lock member rotates such that movement of said drawer mounting lug from said entrance section into said lock section of said slot rotates said rotary lock member from said closed position to said open position, against said biasing member; and said main body portion and said follower portion adapted such that when said rotary lock member is disposed in said open position, said main body portion is moved aside of said drawer mounting lug and said follower portion is aligned adjacent said slot for passing said drawer lock member from said entrance section into said lock section of said slot, and said follower portion extends aside of said drawer lock member when disposed in said lock section of said slot, such that said biasing member returns said rotary lock member to said closed position with said main body portion disposed adjacent to said drawer mounting lug. 18. The drawer slide according to claim 17, further comprising said main body portion of said rotary lock member defining a substantially round, disk shaped member and said follower portion defines a cutout portion into said substantially round, disk shaped member, wherein said cutout portion defined by said follower portion is arcuately shaped and has a cutout radius which is greater than a radius of said substantially round, disk shaped member defined by said main body portion of said rotary lock member, and first vertical protection from a centerline of said cutout portion is disposed rearward of said axis about which said rotary lock member rotates.