CN109951985B

CN109951985B - Support assembly applied to rack system

Info

Publication number: CN109951985B
Application number: CN201711394227.9A
Authority: CN
Inventors: 陈庚金; 杨顺和; 张维成; 王俊强
Original assignee: King Slide Works Co Ltd; King Slide Technology Co Ltd
Current assignee: King Slide Works Co Ltd; King Slide Technology Co Ltd
Priority date: 2017-12-21
Filing date: 2017-12-21
Publication date: 2021-02-12
Anticipated expiration: 2037-12-21
Also published as: CN109951985A

Abstract

The invention relates to a support assembly applied to a rack system, which comprises a rack, a support assembly, a bearing object and a blocking external member. The frame comprises a front column and a rear column; the support assembly is arranged on the front machine column and the rear machine column; the bearing object is carried by the support assembly; the blocking kit comprises a base and a blocking member. The base is mounted to the front mast; the stopper is arranged on the base; when the bearing object moves from a first position to a second position, the bearing object can be blocked by the blocking piece in a locking position, so that the bearing object is prevented from moving in one direction from the second position.

Description

Support assembly applied to rack system

Technical Field

The present invention relates to rack systems, and more particularly to a support assembly for a rack system.

Background

Generally, in a rack system, an electronic device or enclosure is mounted to a column of the rack, typically by way of rails. For example, U.S. patent publication No. US 6,398,041B 1 discloses a latch system including a housing 11, wherein when the housing 11 is in a rack, the housing 11 can be latched to two left and right front posts 13L and 13R of the rack by latches 30L and 30R at the front ends of the left and right sides, respectively.

However, sometimes, it is necessary to develop a method for preventing the chassis or the electronic equipment from moving away from the specific position arbitrarily when the chassis or the electronic equipment is pulled out from the rack to a predetermined position.

Disclosure of Invention

The invention aims to provide a support assembly applied to a rack system, which realizes the purpose of preventing a load from leaving from a preset position to one direction through a blocking mechanism.

Another objective of the present invention is to provide a support assembly for a rack system, wherein the first feature and the second feature are matched to prevent a rear portion of the carrier from tilting relative to a front portion of the carrier during the displacement of the carrier from the first position to the second position.

According to one aspect of the present invention, a rack system includes a rack, a first support assembly, a second support assembly, a load bearing object, and a blocking assembly. The frame comprises a plurality of machine columns; the first support assembly is arranged on a first side of the frame; the second support assembly is arranged on a second side of the frame; the carrier is supported between the first support assembly and the second support assembly; the blocking sleeve is attached to the frame and comprises a base and a blocking piece. The base is detachably mounted to one of the columns; the blocking piece can be positioned at one of a locking position and an unlocking position relative to the base; when the carrying object moves from a first position to a first direction to a second position, the stopper is in the locking position to block the carrying object so as to prevent the carrying object from moving from the second position to the first direction; when the stopper is in the unlocking position, the stopper no longer blocks the carrying object, so that the carrying object can leave from the second position.

Preferably, the stopper is disposed on the base and can be operated to move.

Preferably, the base includes a mounting portion connected to a side portion substantially perpendicular thereto, the mounting portion is detachably connected to one of the columns, and the stopper is located on the side portion.

Preferably, the carrier includes a first side wall and a second side wall, the first side wall and the second side wall are respectively corresponding to the first support assembly and the second support assembly, each side wall has a front end and a rear end, and a structural feature is located between the front end and the rear end, when the carrier is at the second position and the stopper is at the locking position, the stopper can block the carrier by the structural feature.

Preferably, the portable electronic device further comprises at least one first feature disposed on one of the first support assembly and the carrier, the first feature being at least one elastic member, and a second feature disposed on the other of the first support assembly and the carrier, the second feature being a bounded longitudinal space for preventing a rear portion of the carrier from tilting relative to a front portion during displacement of the carrier from the first position to the second position by matching the first feature with the second feature.

Preferably, the first feature is disposed in the first support assembly, and the second feature is disposed in a bounded longitudinal space of one of the two sidewalls of the carrier.

Preferably, the bounded longitudinal space has a first end and a second end opposite to each other.

Preferably, one of the first support assembly and the second support assembly includes a first support frame and a second support frame, the first support frame and the second support frame are telescopically connected, the first support frame is configured with a front mounting member, the second support frame is configured with a rear mounting member, the front mounting member and the rear mounting member are respectively mounted to a front column and a rear column of the rack, and the base of the blocking kit is detachably mounted to the front column.

Preferably, the first supporting frame comprises an upright part and a horizontal part which is substantially vertically connected with the upright part, and the horizontal part is used for supporting the bottom of the bearing object.

Preferably, the second support frame is configured with an auxiliary frame, the auxiliary frame is movably adjusted and displaced along the length direction of the second support frame, and the auxiliary frame comprises an upright portion and a horizontal portion substantially vertically connected with the upright portion, the horizontal portion is used for supporting the bottom of the carrying object.

Preferably, the rack system further comprises a holding member detachably mounted to the rear pillar, and a position of a holding portion of the holding member corresponds to a top of the carrier when the carrier is in the first position.

According to another aspect of the present invention, a rack system includes a rack, a support assembly, a carrier, and a blocking assembly. The frame comprises a front column and a rear column; the support assembly is mounted to the front and rear columns by a front mounting member and a rear mounting member; the bearing object is carried by the support assembly; the blocking sleeve is attached to the frame and comprises a base and a blocking piece. The base is mounted to the front mast; the stopper is arranged on the base; when the bearing object moves from a first position to a first direction to a second position, the bearing object can be blocked by the blocking piece at a locking position so as to prevent the bearing object from moving from the second position to the first direction; when the stopper is in an unlocking position, the carrying object can leave from the second position.

According to another aspect of the present invention, a support assembly for a rack system includes a first support frame including an upright portion and a horizontal portion substantially vertically connected to the upright portion; the second support frame is telescopically connected with the first support frame; and a first feature disposed on the first support frame, the first feature being at least an elastic member, and the first feature being disposed along a length direction of the first support frame.

Preferably, the auxiliary frame can be adjusted and displaced along the length direction of the second support frame to be in a first adjustment position or a second adjustment position, and the auxiliary frame comprises an upright part and a horizontal part which are substantially vertically connected with the upright part.

Preferably, the locking device further comprises a blocking sleeve member, wherein the blocking sleeve member comprises a base and a blocking member arranged on the base, and the blocking member can be located at one of a locking position and an unlocking position.

Preferably, the first support frame is mounted to a front column via a front mounting member, the second support frame is mounted to a rear column via a rear mounting member, the blocking member is attached to the front column, and the blocking member is configured to block a load supported by the support assembly from moving in one direction when the blocking member is in the locking position.

Drawings

For further explanation of the above objects, structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of a rack system according to an embodiment of the invention.

Fig. 2 is an exploded view of a carrier and a pair of support assemblies mounted on a rack of a rack system according to an embodiment of the invention.

Fig. 3 is a schematic view of a support assembly of the rack system for supporting the carrier according to an embodiment of the invention.

FIG. 4 is an exploded view of a support assembly and the carrier according to an embodiment of the invention.

Fig. 5 is an exploded view of a barrier kit and a frame according to an embodiment of the invention.

Fig. 6 is a combination diagram of a barrier kit and a frame according to an embodiment of the invention.

FIG. 7 is a schematic view of another combination of the barrier kit and the rack according to an embodiment of the invention.

FIG. 8 is a schematic view illustrating a view angle at which a barrier member of a barrier kit according to an embodiment of the invention is operated.

FIG. 9 is a schematic view of another view angle of the barrier assembly according to an embodiment of the present invention.

Fig. 10 is a schematic view of the supporting object in a first position and capable of moving in a first direction relative to the supporting assembly according to an embodiment of the invention.

Fig. 11 shows an enlarged view of the position a in fig. 10.

Fig. 12 is an enlarged view of the position B in fig. 10.

Fig. 13 is an enlarged view of the position C in fig. 10.

Fig. 14 is a schematic view illustrating the displacement of the supporting object in the first direction according to an embodiment of the invention.

Fig. 15 is a schematic view illustrating that the supporting object according to an embodiment of the invention is further displaced toward the first direction to reach a second position, and the stopper of the blocking member is in a locking position.

Fig. 16 is a schematic view illustrating the object carrier in the second position and the blocking member of the blocking assembly in an unlocked position according to an embodiment of the invention.

FIG. 17 is a schematic view of an auxiliary frame of a support assembly in one position according to an embodiment of the present invention.

FIG. 18 is a schematic view of an embodiment of the present invention showing the auxiliary frame of the support assembly being adjustable to another position.

Fig. 19 is a schematic view of a retaining member for preventing a carrier from moving in a specific direction according to an embodiment of the invention.

FIG. 20 is an exploded view of a barrier kit and a housing according to another embodiment of the invention.

Fig. 21 is a view-angle combination diagram of a blocking kit and a frame according to another embodiment of the present invention.

FIG. 22 is a schematic view of another embodiment of a barrier kit in combination with a frame from another viewing angle.

FIG. 23 is a schematic view illustrating a view angle at which a barrier member of a barrier kit according to another embodiment of the invention is operated.

FIG. 24 is a schematic view of another view of the barrier kit with the barrier member being operated according to another embodiment of the present invention.

Detailed Description

As shown in fig. 1 and 2, a rack system 20 includes a rack 22, a first support assembly 24, a second support assembly 26, a carrier 28, and a barrier assembly 30.

The frame 22 includes a plurality of columns. Here, the frame 22 includes a pair of front pillars 22a and a pair of rear pillars 22b as an example.

The first support assembly (also referred to simply as support assembly) 24 is mounted to a first side S1 of the frame 22. Wherein the first support assembly 24 is mounted to a front mast 22a of the frame 22 by at least one front mounting member 32, and the first support assembly 24 is mounted to a rear mast 22b of the frame 22 by at least one rear mounting member 34.

The second support assembly 26 is mounted to a second side S2 of the frame 22. The second support assembly 26 and the first support assembly 24 have substantially the same structural configuration, and for the sake of brevity, are not described in detail herein. Preferably, the first support assembly 24 (or the second support assembly 26) includes a first support bracket 36 and a second support bracket 38. The first support bracket 36 is telescopically connected to the second support bracket 38. For example, one of the first support bracket 36 and the second support bracket 38 defines a longitudinal channel 40 for movably mounting the other of the first support bracket 36 and the second support bracket 38. The first support bracket 36 is configured with the front mounting member 32, and the second support bracket 38 is configured with the rear mounting member 34.

The carrier 28 is, for example, a chassis of an electronic device, but is not limited to the implementation. The carrier 28 is supported between the first support assembly 24 and the second support assembly 26.

Preferably, the support 28 includes a first sidewall 42, a second sidewall 44 and a bottom 46 connected between the first sidewall 42 and the second sidewall 44. The first sidewall 42 and the second sidewall 44 are positioned to correspond to the first support assembly 24 and the second support assembly 26, respectively. In this embodiment, the first sidewall 42 and the second sidewall 44 have substantially the same structural configuration. But is not limited in implementation.

As shown in fig. 3 and 4, the first supporting frame 36 includes an upright portion 48 and a horizontal portion 50 substantially vertically connected to the upright portion 48, the horizontal portion 50 is used for supporting the bottom portion 46 of the front of the carrying object 28. In other words, the carrier 28 can be carried by the first support assembly 24 and the second support assembly 26. In this embodiment, a fitting 36a attached to the first support 36 can be considered as a part of the first support 36, and the fitting 36a has the upright portion 48 and the horizontal portion 50. It should be noted that the first supporting frame 36 can also be directly integrated with the upright portion 48 and the horizontal portion 50, and therefore, the implementation is not limited.

Preferably, the second supporting frame 38 is provided with an auxiliary frame 52, the auxiliary frame 52 is movably adjusted and displaced along the length direction of the second supporting frame 38, for example, the auxiliary frame 52 includes a bending portion 54 movably clamped against an upper wall 55 of the second supporting frame 38. The auxiliary frame 52 includes an upright portion 56 and a horizontal portion 58 substantially vertically connected to the upright portion 56, the horizontal portion 58 being used to support the bottom portion 46 of the rear of the carrier 28.

Preferably, one of the first and

second sidewalls

42, 44 of the carrier 28, such as the first sidewall 42, includes a front end 60 and a rear end 62, and a structural feature 64 is located between the front end 60 and the rear end 62. The feature 64 may be, for example, a wall of a hole, groove, or depression when viewed from an exterior perspective, but is not limited in implementation.

Preferably, at least one first feature 68 is disposed on one of the first support assembly 24 and the carrier 28, in this embodiment, the first feature 68 is disposed on the first support assembly 24, and the first feature 68 is, for example, at least one elastic member. Preferably, a plurality of elastic pieces are arranged; and a second feature 70 disposed on the other of the first support assembly 24 and the carrier 28. in this embodiment, the second feature 70 is disposed on one of the first sidewall 42 and the second sidewall 44 of the carrier 28. the second feature 70 is, for example, a bounded longitudinal space. Here, taking three first features 68 arranged along the length direction of the first support frame 36, each first feature 68 is an elastic member, and the elastic member includes a fixing portion 69a and an elastic portion 69b connected to the fixing portion 69 a. Preferably, two ends (e.g., a front end and a rear end) adjacent to the second feature 70 have a first end 72a and a second end 72 b.

As shown in fig. 5, 6 and 7, the blocking member 30 is attached to a column of the frame 22. Here, the blocking member 30 is attached to the front pillar 22a of the frame 22 as an example.

Specifically, the blocking assembly 30 includes a base 74 and a stopper 76. The base 74 is removably mounted to the front mast 22 a. The stopper 76 is disposed on the base 74 and an operating member 78 is used to operate the stopper 76. Preferably, the operating member 78 includes an operating portion 96 for being pressed by a user.

The base 74 includes a mounting portion 80 and a side portion 82, the side portion 82 being bent with respect to the mounting portion 80. Here, the side portion 82 is substantially vertically connected to the mounting portion 80, and the mounting portion 80 is detachably connected to the front pillar 22 a. For example, the mounting portion 80 may be locked to the front mast 22a by a locking member 84 passing through a mounting hole 85 of the front mast 22 a. On the other hand, the side portion 82 includes an opening 95 communicating the first side L1 and the second side L2 of the side portion 82, and a limiting portion 77 and a lug 88 are adjacent to the opening 95. Wherein, the limiting portion 77 is bent relative to the side portion 82, and the lug 88 protrudes relative to the side portion 82.

The stopper 76 includes a connecting portion 79, an elastic arm 90 and a stopping portion 92. The connecting portion 79 is connected to the base 74, such as to the side portion 82; the elastic arm 90 extends from the connecting portion 79 and is located corresponding to the opening 95; the blocking portion 92 is connected to the elastic arm 90 and can pass from the first side L1 to the second side L2 of the side portion 82. Wherein the first side L1 and the second side L2 are opposite sides or sides.

The operating member 78 is pivotally connected to a lug 88 of the base 74 via a shaft 86, and the operating member 78 is connected to or pressed against a resilient arm 90 of the stopper 76.

As shown in fig. 6 to 9, the blocking member 76 is operable to move relative to the base 74 from a locking position X1 (see fig. 6 and 7) to an unlocking position X2 (see fig. 8 and 9).

Specifically, the user can directly operate the latch 76, or the latch 76 can be switched from the locking position X1 to the unlocking position X2 by applying a force F (as shown in fig. 8 and 9) via the operating member 78 (operating portion 96).

As shown in fig. 10 and 11, the carrier 28 is in a first position P1 relative to the first support assembly 24. In one of the three first features 68, for example, a portion (e.g., the elastic portion 69b) of the first feature 68 located closest to the rear pillar 22b is matched with the second feature 70 (see fig. 3), so as to prevent a portion (e.g., a rear portion 28b) of the carrier 28 from tilting relative to another portion (e.g., a front portion 28a) during the displacement of the carrier 28 from the first position P1 to the first direction D1. Preferably, the elastic portion 69b of each first feature 68 has a first section 67a and a second section 67b, and the first section 67a and the second section 67b are, for example, one of a slant surface and a curved surface, so that the second feature 70 can pass each first feature 68 during the displacement of the carrier 28 in the first direction D1 (or a second direction opposite to the first direction D1).

As shown in fig. 12, the structural feature 64 is at a distance from the barrier sleeve 30. On the other hand, as shown in fig. 13, the elastic arm 90 of the stopper 76 of the stopping assembly 30 is pushed by the carrier 28 (such as, but not limited to, the first side wall 42 of the carrier 28) to slightly move the stopper 92 away from the locking position X1.

As shown in fig. 14, when the carrier 28 is pulled out and displaced to a predetermined stroke in the first direction D1, the stopper 76 is still pushed by the carrier 28. Wherein the elastic arm 90 of the stopper 76 accumulates an elastic force.

As shown in fig. 15, when the carrier 28 is further displaced to a second position P2 in the first direction D1, the stopper 76 is in the locking position X1 to block the carrier 28, so as to prevent the carrier 28 from being displaced from the second position P2 to the first direction D1. Specifically, when the carrier 28 is in the second position P2, the elastic arm 90 of the catch 76 releases the elastic force, and the catch 76 is in the locking position X1, wherein the blocking portion 92 of the catch 76 can catch or lock the structural feature 64. Further, a portion of the carrier 28 (e.g., a wall 99 of the structural feature 64) can be blocked by the stop 92 of the stop 76. In other words, when the carrier 28 is at the second position P2 and the stopper 76 is at the locking position X1, the stopper 76 can be used to block the carrier 28 by the wall 99 of the structural feature 64. Accordingly, the carrier 28 is prevented from being displaced from the second position P2 to the first direction D1.

As shown in fig. 16, when the catch 92 of the catch 76 is to be released from the latching or locking of the structural feature 64, the user can directly operate the catch 76, or the catch 76 can be switched from the locking position X1 to the unlocking position X2 by applying a force F via the operating member 78 (operating portion 96). When the stopper 76 is located at the unlocking position X2, the stopper 92 of the stopper 76 no longer blocks the carrier 28, so that the carrier 28 can continue to be displaced from the second position P2 to the first direction D1; alternatively, the carrier 28 can be displaced from the second position P2 toward the first position P1 in the second direction D2. It is worth mentioning that, in the unlocking position X2, the elastic arm 90 of the catch 76 can be blocked by the limiting portion 77.

As shown in fig. 17 and 18, the auxiliary frame 52 on the second supporting frame 38 can be adjusted and displaced along the length direction of the second supporting frame 38 to be at a first adjustment position E1 (this portion can be referred to in fig. 3) or a second adjustment position E2. According to this configuration, the horizontal portion 58 of the auxiliary frame 52 can be supported at different positions on the bottom portion 46 of the rear of the carrying object 28, or can be adapted to another carrying object with a length different from that of the carrying object 28 of the present embodiment, so as to meet different requirements.

As shown in fig. 19, the rack system 20 further includes a retaining member 100, the retaining member 100 is detachably mounted to the rear pillar 22b, and when the carrier is at the first position P1 (such as, but not limited to, the retracted position), a retaining portion 102 of the retaining member 100 is located corresponding to a top portion 47 of the carrier. Preferably, the retaining member 100 includes a connecting portion 104 substantially vertically connected to the retaining portion 102, and the connecting portion 104 can be detachably mounted to the rear pillar 22b by screwing or clipping. With the retaining member 100, the possibility of upward movement of the load 28 is prevented during transportation or handling of the rack system 20, thereby increasing the safety of transportation or handling.

Referring to fig. 20, 21 and 22, another embodiment of a barrier kit 200 according to the present invention is shown. The barrier kit 200 differs from the above embodiments substantially in that: the stopper 202 and the operating member 204 are both pivotally connected to the side portion 208 by a shaft 206, and the blocking member 200 does not have the position-limiting portion 77.

Specifically, the barrier kit 200 is attached to a mast 210 (e.g., front mast) of the rack, for example. A base 212 is removably mounted to the mast 210. The stopper 202 is disposed on the base 212 and can move relative to the base 212. The stopper 202 and the operating member 204 are pivotally connected to the lug 214 of the side portion 208 via the shaft 206.

Preferably, the stopper 202 comprises an elastic arm 216 and a stopping portion 218 connected to the elastic arm 216, wherein the elastic arm 216 is supported against the side portion 208 by a supporting leg 220, and the stopping portion 218 can pass from a first side L1 of the side portion 208 to a second side L2 of the side portion 208 through a through hole 222 of the side portion 208 of the base 212. Preferably, the side portion 208 includes an opening 224 communicating the first side L1 and the second side L2, and the operating member 204 is connected to or abutted against the stopper 202 through the opening 224.

As shown in fig. 21-24, the stop 202 is operable to move relative to the base 212 between a locked position X1 (see fig. 21 and 22) and an unlocked position X2 (see fig. 23 and 24). Specifically, the user can directly operate the latch 202, or can operate the latch 202 to switch from the locking position X1 to the unlocking position X2 by applying a force F (as shown in fig. 23 and 24) through the operating member 204 (operating portion 226).

From the above description, it can be seen that the enhanced efficacy and advantages of the present invention are:

a. the barrier kit 30 is removably mounted to a mast (e.g., front mast 22a) of the airframe 22. The blocking member 30 prevents the carrier 28 from moving in one direction from the second position P2.

b. The support assembly 24 includes a first feature 68 and the carrier 28 includes a second feature 70, wherein the first feature 68 and the second feature 70 cooperate to prevent one portion of the carrier 28 from tilting relative to another portion of the carrier 28 during displacement of the carrier 28 from the first position P1 in the first direction D1 toward the second position P2.

c. The position of the auxiliary frame 52 can be adjusted so that the horizontal portion 58 of the auxiliary frame 52 can be supported at different positions on the bottom portion 46 of the rear of the carrying object 28, or can be adapted to another carrying object with a length different from the length of the carrying object 28 of the present embodiment to meet different requirements.

d. The retaining member 100 is detachably mounted to a column (e.g., rear column 22b) of the rack 22. with the retaining member 100, the possibility of upward movement of the load 28 is prevented during transportation or handling of the rack system 20, thereby increasing the safety of transportation or handling.

Although the present invention has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the above embodiments are illustrative only, and various equivalent changes and modifications may be made without departing from the spirit of the present invention, and therefore, it is intended to cover in the appended claims all such changes and modifications as fall within the true spirit of the invention.

Claims

1. A rack system comprising a rack, a first support assembly, a second support assembly, and a load bearing member, the rack comprising a plurality of posts, the first support assembly mounted to a first side of the rack, the second support assembly mounted to a second side of the rack, the load bearing member supported between the first support assembly and the second support assembly, the rack system comprising:

a blocking sleeve is attached to the frame, the blocking sleeve comprising:

a base detachably mounted to one of the columns; and

a blocking member can be positioned at one of a locking position and an unlocking position relative to the base;

when the bearing object moves from a first position to a first direction to a second position, the blocking piece is in the locking position by clamping or locking the side wall of the bearing object so as to block the bearing object, so that the bearing object is prevented from moving from the second position to the first direction;

when the stopper is in the unlocking position, the stopper releases the clamping or locking of the side wall of the bearing object to stop the bearing object, so that the bearing object can leave from the second position.

2. The frame system according to claim 1, wherein the blocking member is disposed on the base and is operable to move.

3. The rack system of claim 2, wherein the base includes a mounting portion connected substantially perpendicular to a side portion, the mounting portion being removably connected to one of the columns, and the stop being located on the side portion.

4. The rack system of claim 1, wherein the carrier includes a first side wall and a second side wall, the first side wall and the second side wall are positioned with respect to the first support assembly and the second support assembly, respectively, each side wall has a front end and a rear end, and a structural feature is positioned between the front end and the rear end, the stop being capable of blocking the carrier by the structural feature when the carrier is in the second position and the stop is in the locked position.

5. The rack system of claim 1, further comprising a first feature disposed on one of the first support assembly and the carrier, the first feature being at least one resilient member, and a second feature disposed on the other of the first support assembly and the carrier, the second feature being a bounded longitudinal space configured to prevent a rear portion of the carrier from tilting relative to a front portion of the carrier during displacement of the carrier from the first position to the second position by a combination of the first feature and the second feature.

6. The rack system of claim 5, wherein the first feature is disposed on the first support assembly and the second feature is disposed in a bounded longitudinal space of one of the two sidewalls of the carrier.

7. The rack system of claim 6, wherein the bounded longitudinal space has a first end and a second end that are positioned opposite each other.

8. The rack system of claim 1, wherein one of the first support assembly and the second support assembly comprises a first support bracket and a second support bracket, the first support bracket and the second support bracket being telescopically coupled, the first support bracket configured with a front mounting and the second support bracket configured with a rear mounting, the front mounting and the rear mounting being mounted to a front mast and a rear mast, respectively, of the rack, and the base of the blocking sleeve being removably mounted to the front mast.

9. The rack system of claim 8, wherein the first support frame comprises an upright portion and a horizontal portion substantially vertically connected to the upright portion, the horizontal portion supporting the bottom of the carrier.

10. The frame system of claim 9, wherein the second support frame is configured with an auxiliary frame movably adjustable along a length direction of the second support frame, and the auxiliary frame comprises an upright portion and a horizontal portion substantially vertically connected to the upright portion, the horizontal portion being configured to support a bottom of the carrier.

11. The rack system of claim 8, further comprising a holder detachably mounted to the rear column, wherein a holding portion of the holder is positioned corresponding to a top of the carrier when the carrier is in the first position.

12. A rack system comprising a rack, a support assembly and a load bearing member, the rack comprising a front column and a rear column, the support assembly being mounted to the front and rear columns by a front mounting member and a rear mounting member, the load bearing member being carried by the support assembly, the rack system comprising:

a blocking sleeve is attached to the frame, the blocking sleeve comprising:

a base mounted to the front column; and

a stopper disposed on the base;

when the bearing object moves from a first position to a first direction to a second position, the blocking piece is positioned at a locking position by clamping or locking the side wall of the bearing object so as to block the bearing object, so that the bearing object is prevented from moving from the second position to the first direction;

when the stopper is in an unlocking position, the stopper can release the clamping or locking of the side wall of the bearing object to stop the bearing object, so that the bearing object can leave from the second position.

13. The rack system of claim 12, wherein the blocking assembly further comprises an operating member for operating the blocking member from the locked position to the unlocked position.

14. The rack system of claim 13, wherein the base includes a mounting portion bent with respect to the mounting portion and a side portion, the mounting portion being connected to the front pillar, and the blocking member being pivotally connected to the side portion.

15. The rack system of claim 12, wherein the support assembly further comprises a first feature and the carrier comprises a second feature, the first feature and the second feature cooperating to prevent a rear portion of the carrier from tilting relative to a front portion of the carrier during displacement of the carrier from the first position in the first direction.

16. The rack system of claim 15, wherein one of the first feature and the second feature is a resilient member and the other of the first feature and the second feature is a bounded longitudinal space.

17. The utility model provides a be applied to rack system's support assembly, includes a first support frame and a second support frame, its characterized in that:

the first support frame comprises an upright part and a horizontal part which are substantially vertically connected with the upright part;

the second support frame is telescopically connected with the first support frame;

the first feature is arranged on the first support frame, the first feature is at least one elastic piece, and the first feature is configured along the length direction of the first support frame;

the support assembly further comprises a blocking sleeve member, the blocking sleeve member comprises a base and a blocking piece, the blocking piece is arranged on the base, and the blocking piece can be located at one of a locking position and an unlocking position.

18. The support assembly as claimed in claim 17, further comprising an auxiliary frame capable of being adjusted and displaced along the length of the second support frame to a first adjustment position or a second adjustment position, the auxiliary frame comprising an upright portion and a horizontal portion substantially vertically connecting the upright portion.

19. A support assembly according to claim 18 wherein the first support frame is mounted to a front mast by a front mounting member and the second support frame is mounted to a rear mast by a rear mounting member, the blocking member is attached to the front mast, and the blocking member is operative to block displacement of a load supported by the support assembly in one direction when in the locked position.