GB2507040A

GB2507040A - Sleeve bracket assembly

Info

Publication number: GB2507040A
Application number: GB201218510A
Authority: GB
Inventors: Jui-Chien Kao
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-16
Filing date: 2012-10-16
Publication date: 2014-04-23
Also published as: GB201218510D0

Abstract

A sleeve bracket assembly has a frame 10,10B and multiple first sleeve mounts 21, 21A. The frame has a first sleeve track 13, 13B having a groove 133, 133A. Each first sleeve mount has a base 211, 211A and a hollow positioning button 212, 212A, 212B, 212C protruding from a top surface of the base and having a retractable protrusion 2123 or a flange 2125A, 2125C. The cross section of the base or the positioning button of each first sleeve mount is round, so the sleeves S can be rotated. A second sleeve track (14B, fig. 9), parallel to the first sleeve track , may be provided with a second mount device (30B, fig. 11) having multiple positioning buttons. The first sleeve track is wider than the second sleeve track and has larger positioning buttons.

Description

SLEEVE BRACKET ASSEMBLY

1. Field of the Invention

The present invention relates to a sleeve bracket assembly, and more particularly to a sleeve bracket assembly positioning sleeves securely and also allowing the sleeves to be rotated.

2. Description of Related Art

A conventional sleeve bracket assembly has a frame and a mount device. The moirnt device has multiple sleeve mounts connected with the frame.

Each sleeve mount has a rectangular base and a round button. Each button protrudes from a top surface of the base and can be inserted into a sleeve.

Because each button is round, the sleeve can be rotated and allow a number or a sign on the sleeve to face a user. However, each button lacks a positioning structure and cannot securely hold the sleeve. The sleeves easily fall off from the buttons.

Another sleeve mount of a conventional sleeve bracket assembly has a rectangular base and a rectangular button. Each button has a retractable protrusion used for abutting a recess of an inner surface of the sleeve. Therefore, the sleeves can be firmly positioned. Nevertheless, the buttons are rectangular and cannot allow the sleeves to be rotated.

Moreover, a conventional sleeve bracket assembly can merely display one set of s'eeves that have slightly different sizes. An additional s'eeve bracket assembly is required to receive another set of sleeves. For example, three sleeve bracket assemblies are needed to receive whole sets of sleeves that comprise complete sizes.

However, purchasing new sleeve bracket assemblies increases a purchasing cost and carrying multiple s'eeve bracket assemblies is inconvenient.

To overcome the shortcomings, the present invention tends to provide a sleeve bracket assembly to mitigate the aforementioned problems.

The main objective of the invention is to provide a sleeve bracket assembly positioning sleeves securely and also allowing the sleeves to be rotated.

A s'eeve bracket assembly has a frame and multip'e first sleeve mounts.

The frame has a first sleeve track having a groove. Each first sleeve mount has a base and a hollow positioning button protruding from a top surface of the base and having a retractable protrusion or a flange. The cross section of the base or the positioning button of each first sleeve mount is round, so sleeves can be rotated. The protrusions and the flanges can securely position the sleeves.

Accordingly, the sleeve bracket assemHy can position the sleeves firmly and also allow the sleeves to be rotated.

Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

IN THE DRAWINGS

Fig. I is an enlarged cross sectional side view of a first embodiment of a sleeve bracket assembly in accordance with the present invention; Fig. 2 is a partially exploded perspective view of the sleeve bracket assembly in Fig. I; Fig. 3 is an enlarged operational perspective view of the sleeve bracket assembly in Fig. I; Fig. 4 is a perspective view of the sleeve bracket assembly in Fig. 1; Fig. 5 is an enlarged cross sectional side view of a second embodiment of the sleeve bracket assembly in accordance with tile present invention; Fig. 6 is a partially exploded perspective view of tile sleeve bracket assembly in Fig. 5; Fig. 7 is an enlarged perspective view in partial section of the sleeve bracket assembly in Fig. 5; Fig. 8 is an enlarged side view in partial section of a third embodiment of tile sleeve bracket assembly in accordance with tile present invention; Fig. 9 is a partially exploded perspective view of a frame of the sleeve bracket assembly in Fig. 8; Fig. lOis a partially expthded perspective view of the sleeve bracket assembly in Fig. 8; Fig. 11 is an enlarged operational view in partial section of the sleeve bracket assembly in Fig. 8; Fig. 12 is a perspective view of the sleeve bracket assembly in Fig. 8; Fig. 13 is an enlarged side view in partial section of a fourth embodiment of the sleeve bracket assembly in accordance with the present invention; Fig. 14 is a partially exploded perspective view of the sleeve bracket assembly in Fig. 13; and Fig. 15 is an enlarged perspective view in partial section of the sleeve bracket assembly in Fig. 13.

With reference to Figs. 1 to 4, a first embodiment of a sleeve bracket assembly in accordance with the present invention comprises a frame 10 and a first mount device 20.

The frame 10 is made of aluminum and has a back plate 11, a bracket unit 12 and a first sleeve track 13.

The back plate 11 is elongated and has atop, a bottom, two opposite ends, a length, a side surface and two mounting holes 111. The bottom of the back plate 11 is opposite to the top of the back plate 11. The mounting holes 111 are formed through near the top and respectively near the opposite ends of the back plate 11. The frame 10 can be placed at or hung on a flat plane by the mounting holes 111.

The bracket unit 12 is formed integrally on the side surface of the back plate 11 and has a top surface and a length. The length of the bracket unit 12 is the same as that of the back plate 11.

The first sleeve track 13 is linear, is formed on and protrudes from the top surface of the bracket unit 12, extends along a line parallel to an extending line of the back plate 11 and has a top surface 131, two bars 132 and a groove 133. The top surface 131 of the first sleeve track 13 is rectangular and has two opposite edges. The bars 132 are respectively formed on the edges of the top surface 13 1 of the first sleeve track 13. Each bar 132 has a bent top facing that of the other bar 132. The groove 133 is formed between the top surface 131 and the bars 132 of the first sleeve track 13.

The first mount device 20 has multiple first sleeve mounts 21. The first sleeve mounts 21 are detachably connected with the first sleeve track 13. Each first sleeve mount 21 has a base 211 and a positioning button 212. The base 211 of each first sleeve mount 21 is slidably and rotatably mounted in the groove 133 and has a top surface and a round cross section. The positioning button 212 of each sleeve mount 21 is hollow and is formed on and protrudes from the top surface of the base 211 and has a rectangular cross section, a side surface, two openings 2121, a resilient section 2122 and a protrusion 2123. The openings 2121 of each first sleeve mount 21 are respectively formed through the side surface of the positioning button 212. The resilient section 2122 of each first sleeve mount 21 is formed between the openings 2121 of the positioning button 212 and has a central segment. The protrusion 2123 of each first sleeve mount 21 is formed on and protrudes outward from the central segment of the resilient section 2122 of the first sleeve mount 21. Preferably, the positioning buttons 212 of the first mount device 20 have the same size.

With reference to Figs. 1 and 3, multiple sleeves S are respectively and detachably mounted around the positioning buttons 212. The sleeves S can be rotated because the bases 211 are round and are rotatably mounted in the groove 133. Accordingly, a number or a sign on each sleeve S can be rotated to face a user. When each sleeve S is inserted by the positioning button 212, the resilient section 2122 is bent inwardly by an inner surface of the sleeve S. Consequently, the resilient section 2122 recovers and the protrusion 2123 is embedded in a recess of the inner surface of the sleeve S to position the sleeve S. Accordingly, the sleeve bracket assembly in accordance with the present invention can position the sleeves S secLirely and also allow the sleeves S to be rotated.

With reference to Figs. 5 to 7, a second embodiment of the sleeve bracket assembly is substantially the same as the first embodiment except the following features.

The base 21 lA of each first sleeve mount 2 lA has a rectangular cross section and is slidably mounted in the groove I 33A. Accordingly, the bases 21 IA are kept from being rotatable in the grooves 133A.

The positioning button 21 2A of each first sleeve mount 21 A has a round cross section, two opposite sides, two openings 21 24A and an annular flange 21 25A. The openings 21 24A of each positioning button 21 2A are elongated and are respectively formed through the opposite sides of the positioning button 21 2A. The flange 21 25A of each positioning button 21 2A radially protrudes from the positioning button 2l2A. When each sleeve S is inserted by the positioning button 212A, the flange 2l25Ais pressed inwardly by the inner surface of the sleeve S. Consequently, the flange 21 25A recovers and abuts the recess of inner surface of the sleeve S for secure positioning.

Because the cross sections of the positioning buttons 21 2A are round, the second embodiment can also allow the sleeves S to be rotated.

With reference to Figs. 8 to 12, a third embodiment of the sleeve bracket assembly is substantially the same as the first embodiment except the following features.

The bracket unit 12B has a first bracket 121B, a second bracket 122B and multiple securing members l23B. The firstbracket 121B is elongated and is formed integrally on the side sLirface of the back plate 1 lB and has a top surface, a length, a combining section and a connecting side section 1211 B. The length of the first bracket 121 B is the same as that of the back plate II B. The combining section is connected integrally with the side surface of the back plate 11B. The connecting side section 1211B is L-shaped and is opposite to the combining section. The first sleeve track I 3B is formed on and protrudes from the top surface of the first bracket 121B.

The second bracket 122B is elongated, is connected securely with the connecting side section 1211 B of the first bracket 121 B and has a top surface, a length and an attaching side section 1221 B. The length of the second bracket 1 22B is the same as that of the back plate 1 lB. The attaching side section 1221 B is [-shaped and abuts the connecting side section 1211 B of the first bracket 121B.

Each securing member 123B is mounted through the connecting side section 1211 B and the attaching side section 1221 B and has a bolt and a nut connected with the bolt.

The frame lOB further has a linear second sleeve track I 4B and a linear third sleeve track I 5B.

The second sleeve track 14B is linear, protrudes from the top surface of the second bracket 122B and is parallel to the first sleeve track 13B. The first sleeve track 13B is located between the second sleeve track 14B and the back plate 11B.

The third sleeve track I SB is linear, protrudes froni the top surface of the second bracket 122B and is parallel to the first sleeve track 13B. The second sleeve track 14B is located between the first sleeve track 13B and the third s'eeve track I SB. The third sleeve track I SB and tile second sieeve track I 4B are substantially the same as the first sleeve track 13B except a width of the first sleeve track 1 3B is longer than that of the second sleeve track I 4B and a width of the second sleeve track I 4B is ionger than that of the third sieeve track 15 B. The sleeve bracket assembly further has a second mount device 30B and a third mount device 40B that are respectively connected with the second sleeve track l4B and the third s'eeve track ISB. The second mount device 30B and the third mount device 40B are substantially the same as the first mount device 20B except a size of each positioning button 2 12B of the first mount device 20B is iarger than that of each positioning button 31 2B of the second mount device 30B. The size of each positioning button 3 12B of the second mount device 30B is larger than that of each positioning button 41 2B of the third mount device 40B. Accordingly, heavier sleeves S can be placed closer to the back plate liD to prevent the second bracket 122B from being broken.

With reference to Figs. 13 to 15, a fourth embodiment of the sleeve bracket assembly is substanti&ly the same as the third embodiment except each base 21 lC has a rectangular cross section and each positioning button 212C has two openings 2124C and an annular flange 2l25C. The openings 2124C of each positioning button 21 2C are elongated and are respectively formed through the opposite sides of the positioning button 212C.

From the above description, it is noted that the present invention has the following advantages: 1. Secure positioning and rotation flrnction of the sleeves 5: The cross sections of the bases 211 or the positioning buttons 212A,2l2C are round, so the sleeves S can be rotated. The protrusions 2123 and the flanges 2125A,2125C can securely position the sleeves S. Accordingly, the s'eeve bracket assembly in accordance with the present invention can position the sleeves S firmly and also allow the sleeves S to be rotated.

2. Cost reduction: The sleeve bracket assembly in accordance with the present invention can display different sets of sleeves S at the same time and no additional sleeve bracket assembly is required. Accordingly, a user does not have to purchase a new sleeve bracket assembly and carrying one sleeve bracket assembly is convenient.

3. Excellent versatility: In the third and fourth embodiments, a user can choose whether the attaching side section 1221 B, 1221 C of the second bracket 1 22B is connected with the connecting side section 1211 B, 1211 C of the first bracket 12 lB by the securing members 123B,123C. Accordingly, a format of the s'eeve bracket assembly can be changed to meet a user's need and this is versatile and convenient.

Claims

CLAIM(S): 1. A sleeve bracket assembly comprising: a frame (10,1 OB) being made of aluminum and having an elongated back plate (ll,llB) having atop; a bottom opposite to tile top of tile back plate (11,11 B); two opposite ends; a length; a side surface; and two mounting holes (ill) formed through near the top and respectively near the opposite ends of the back plate (ll,11B); a bracket unit (12,1 2B) formed integrally on the side surface of the back plate (11,1 lB) and having a top surface; a linear first sleeve track (13,1 3B) formed on and protruding from tile top surface of the bracket unit (12,1 2B), extending along a line parallel to an extending line of the back plate (11,11 B) and having a rectangular top surface (131) having two opposite edges; two bars (132) respectively formed on the edges of the top surface (131) of the first sleeve track, each bar (132) having a bent top facing that of the other bar (132); and a groove (133) formed between the top surface (131) of the first sleeve track and the bars (132); a first mount device (20,20B) having multiple first sleeve mounts (21) detachably connected with the sleeve track (13,1 3D), each first sleeve moirnt (2]) having a base (211) slidably and rotatably mounted in the first sleeve track (13) and having a top surface and a round cross section; and a hollow positioning button (2] 2,2] 2B) formed on and protruding from the top surface of the base (211) and having a rectangular cross section; a side surface; two elongated openings (2121) respectively formed through the side surface of the positioning button (212,212B); a resilient section (2122) formed between the openings (2121) of the positioning button (212,212B) and having a central segment; and a protrusion (2123) formed on and protruding outward from tile central segment of the resilient section (2122).
2. The sleeve bracket assembly as claimed in claim 1, wherein the frame (1 OB) tbrther has a linear second sleeve track (1 4B) parallel to the first sleeve track (13B) and the first sleeve track (13B) is located between the second sleeve track (14B) and the back plate (1 1B); the sleeve bracket assembly further has a second mount device (30B) connected with the second sleeve track (14B) and having muitipie positioning buttons; a width of the first sleeve track (1 3B) is longer than that of the second sleeve track (14B); the positioning buttons (212B) of tile first mount device (20B) have the same size arid the positioning buttons (31 2B) of the second mount device (30B) have the same size; and a size of each positioning button (2 12B) of the first mount device (20B) is larger than that of each positioning button (31 2B) of the second mount device (30B).
3. The sleeve bracket assembly as claimed in claim 2, wherein the bracket unit (I 2B) has an elongated first bracket (121B) formed integrally on the side surface of the back plate (1 1B) and having a top surface; a length the same as that of the back plate (1 1B); a combining section connected integrally with the side surface of tile back plate (II B); and an L-shaped connecting side section (121 1B) opposite to the combining section; an elongated second bracket (1 22B) corniected securely with the connecting side section (l2iiB) of the first bracket (i2iB) and having a top surface; a ength the same as that of the back plate (II B); and an L-shaped attaching side section (i22iB) abLitting the connecting side section (l2iiB) of the first bracket (121B); and multiple securing members (12311), each securing nieniber (1 23B) mounted through the comiecting side section (1211 B) and the attaching side section (1221 B) and having a bolt and a nut connected with the bolt.
4. The sleeve bracket assenThly as claimed in claim 3, wherein the frame (1011) fUrther has a linear third sleeve track (1511) parallel to the second sleeve track (14B); and the first sleeve track (1311) protrudes from the first bracket (12111) and the second sleeve track (1411) and the third sleeve track (1511) protmde from the second bracket (I 22B).
5. A sleeve bracket assembly comprising: a frame (10) being made of aluminum and having an elongated back plate (11) having a top; a bottom opposite to the top of the back plate (11); two opposite ends; a length; a side surface; and two mounting holes (111) formed through near the top and respectively near the opposite ends of the back plate (11); a bracket unit (12) formed integrally on the side surface of the back plate (11) and having a top surface; a linear first sleeve track (13) formed on and protruding from the top surface of the bracket unit (12), extending along a line parallel to an extending line of the back plate (II) and having a rectangular top sm-face (131) having two opposite edges; two bars (132) respectively formed on the edges of the top surface (131) of the first sleeve track, each bar (132) having a bent top facing that of the other bar (132); and a groove (1 33A) formed between the top surface (131) of the first sleeve track and the bars (132); a first mount device (20) having multiple first sleeve mounts (21 A) detachably connected with the sleeve track (13), each first sleeve mount (21A) having a base (21 1 A,2 11 C) slidably mounted in the first sleeve track (13) and having a top surface and a rectangular cross section; and a hollow positioning button (212A,2l2C) formed on and protruding from the top surface of the base (211 A,2 11 C) and having a round cross section; two opposite sides; two elongated openings (21 24A,2 1 24C) respectively formed through the opposite sides of the positioning button (212A,212C); and an annular flange (2 125A,2 125 C) radially protruding from the positioning button (21 2A,2 11 C).
6. The sleeve bracket assembly as claimed in claim 5, wherein the frame (10) further has a linear second sleeve track (14) parallel to the first sleeve track (13) and the first sleeve track (13) is located between the second sleeve track (14) and the back plate (11); the sleeve bracket assembly further has a second mount device (30) connected with the second sleeve track (14) and having multiple positioning buttons; a width of the first s'eeve track (13) is longer than that of the second sleeve track (14); the positioning buttons (2 12A,2 1 2C) of the first mount device (20) have the same size and the positioning buttons (312) of the second mount device (30) have the same size; and a size of each positioning button (21 2A,2 1 2C) of the first mount device (20) is larger than that of each positioning button (312) of the second mount device (30).
7. The sleeve bracket assembly as claimed in claim 6, wherein the bracket unit (12) has an elongated first bracket (121) formed integrally on the side surface of the back plate (11) and having a top surface; a length the same as that of the back plate (11); a combining section connected integrally with the side surface of the back plate (11); and an L-shaped connecting side section (121 1C) opposite to the combining section; an elongated second bracket (122) connected securely with the connecting side section (1211 C) of the first bracket (121) and having a top surface; a length the same as that of the back plate (11); and an L-shaped attaching side section (1221C) abutting the connecting side section (1211 C) of the first bracket (121); and multiple securing members (123C), each securing member (1 23C) mounted through the comiecting side section (1211 C) and the attaching side section (1221 C) and having a bolt and a nut connected with the bolt.
8. The sleeve bracket assembly as claimed in claim 7, wherein the frame (10) further has a linear third sleeve track (15) parallel to the second sleeve track (14); and the first sleeve track (13) protrudes from the first bracket (121) and the second sleeve track (14) and the third sleeve track (15) protrude from the second bracket (122).CLAIM(S): 1. A sleeve bracket assembly comprising: a frame (10,1 OB) being made of aluniinum and having an elongated back plate (11,1 1B) having atop; abottorn opposite to tlietop oftliebackplate (l1,IIB); two opposite ends; a length; a side surface; and two mounting holes (ill) foniied through near the top and respectively near the opposite ends of the back plate (11,1 IB); 0 a bracket unit (12, 2B) formed integrally on the side surface of C) o the back plate (11,11 B) and having a top surface; a linear first sleeve track (13,1 3B) formed on and protruding from the top surface of the bracket unit (12,12B), extending along a line par&lel to an extending line of the back plate (11,11 B) and having a rectangular top surface (131) having two opposite edges; two bars (132) respectively formed on the edges of the top surface (131) of the first sleeve track, each bar (132) having a bent top facing that of the other bar (132); and a groove (133) formed between the top surface (131) of the first sleeve track and the bars (132); a first mount device (20,20B) having multiple first sleeve mounts (21) detachably comiected with the sleeve track (13, 13B), each first sleeve mount (2]) having a base (211) slidably and rotatably mounted in the first sleeve track (13) and having a top surface and a roimd cross section; and a hollow positioning button (212,21 2B) formed on and protruding from the top surface of the base (211) and having a rectangular cross section; a side surface; C') 10 two elongated openings (2121) respectively formed through the side surface of the positioning button (212,21 2B); 0 a resilient section (2122) formed between the openings o (2121) of the positioning button (212,21 2B) and having a central segment; and a protrusion (2123) formed on and protruding outward from the central segment of the resilient section (2122); and the bracket unit (1 2B) has an elongated first bracket (121 B) formed integrally on the side surface of the back plate (11 B) and having a top surface; a length the same as that of the back plate (11 B); a combining section connected integrally with the side surface of the back plate (11B); and anL-shaped connecting side section (1211B) opposite to the combining section; an elongated second bracket (1 22B) coirnected securely with the connecting side section (121 1 B) of the first bracket (121 B) and having a top surface; a length the same as that of tile back plate (11 B); and an L-shaped attaching side section (1221 B) abutting the connecting side section (1211 B) of the first bracket (121 B); and multiple securing members (123B), each securing member (1 23B) mounted through the connecting side section (1211 B) and the C') 10 attaching side section (1221 B) and having a bolt and a nut connected with the bolt..0 2. The sleeve bracket assembly as claimed in claim 1, wherein o the frame (lOB) further has a linear second sleeve track (14B) parallel to the first sleeve track (i3B) and the first sleeve track (l3B) is located between the second sleeve track (14B) and the back plate (1 IB); the sleeve bracket assembly further has a second mount device (30B) connected with the second sleeve track (14B) and having multiple positioning buttons; a width of the first sleeve track (1 3B) is longer than that of the second sleeve track (l4B); the positioning buttons (21 2B) of the first mount device (20B) have the same size and the positioning buttons (31 2B) of the second mount device (30B) have the same size; and a size of each positioning button (21 2B) of the first mount device (20B) is larger than that of each positioning button (3 1 2B) of tile second mount device (30B).3. The sleeve bracket assembly as claimed in claim 1, wherein the frame (lOB) further has a linear third sleeve track (1 5B) parallel to the second s'eeve track (14B); and the first sleeve track (13B) protrudes from the first bracket (121B) and the second sleeve track (14B) and the third sleeve track (1 5B) protrude from the second bracket (I 22B).4. A sleeve bracket assembly comprising: a frame (10) being made of aluminum and having 0 an elongated back plate (11) having a) o atop; a bottom opposite to the top of the back plate (11); two opposite ends; a length; a side surface; and two mounting holes (111) formed through near the top and respectively near the opposite ends of the back plate (11); a bracket unit (12) formed integrally on the side surface of the back plate (11) and having a top surface; a linear first sleeve track (13) formed on and protruding from the top surface of the bracket unit (12), extending along a line parallel to an extending line of the back plate (11) and having a rectangular top surface (131) having two opposite edges; two bars (132) respectively formed on the edges of the top surface (131) of the first sleeve track, each bar (132) having a bent top facing that of the other bar (132); and a groove (1 33A) formed between the top surface (131) of the first sleeve track and the bars (132); a first mount device (20) having multiple first sleeve mounts (21 A) C') 10 detachably connected with the sleeve track (13), each first sleeve mount (21A) having 0 a base (211 A,2 11 C) shdably mounted in the first sleeve track o (13) and having a top surface and a rectangular cross section; and a hollow positioning button (21 2A,2 1 2C) formed on and protruding from the top surface of tile base (211 A,2 11 C) and having a round cross section; two opposite sides; two elongated openings (21 24A,2 1 24C) respectively formed through the opposite sides of the positioning button (21 2A,2 1 2C); and an annular flange (21 25A,2 125C) radially protruding from the positioning button (21 2A,2 II C) and the bracket unit (12) has an elongated first bracket (121) formed integrally on the side surface of the back plate (II) and having a top surface; a ength the same as that of the back plate (11); a combining section connected integrally with the side surface of the back plate (11); and an L-shaped connecting side section (1211 C) opposite to the combining section; an elongated second bracket (122) connected securely with the connecting side section (1211 C) of tile first bracket (121) and having C') 10 atop surface; a length the same as that of the back plate (11); and O an L-shaped attaching side section (1221 C) abutting the o connecting side section (l2llC) of the first bracket (121); and multiple securing members (123C), each securing member (1 23C) mounted through the connecting side section (1211 C) and the attaching side section (1221C) and having a bolt and a nut connected with the bolt.5. The sleeve bracket assembly as claimed in claim 4, wherein the frame (10) further has a linear second sleeve track (14) parallel to the first sleeve track (13) and the first sleeve track (13) is located between the second sleeve track (14) and the back plate (11); the sleeve bracket assenlbiy further has a second mount device (30) connected with the second sleeve track (14) and having multiple positioning buttons; a width of the first sleeve track (13) is longer than that of the second sleeve track (14); the positioning buttons (21 2A,2 I 2C) of the first mount device (20) have the same size and the positioning buttons (312) of the second mount device (30) have the same size; and a size of each positioning button (21 2A,2 I 2C) of tile first mount device (20) is larger than that of each positioning button (312) of the second mount device (30).6. The sieeve bracket assembly as ciainied in claim 5, wherein C) 10 the fran-ic (10) further has a linear third sleeve track (iS) parallel to the second sleeve track (14); and the first sleeve track (13) protrudes from the first bracket (121) and the second sleeve track (14) and the third sleeve track (15) protrude from the second O bracket (122).