Expandable support

Abstract

The expandable support comprises a main frame body and an extension frame which are connected through a pull-out structure, a containing groove is formed in the main frame body, an opening of the containing groove faces the pull-out direction of the extension frame, more than two cross rods are arranged in the containing groove, and the cross rods are perpendicular to the pull-out direction of the extension frame; the extension frame is provided with a bearing part used for bearing the transverse rod. Second limiting steps with the same number as the transverse rods are arranged on the extension frame, and all the second limiting steps are distributed in a stepped lifting mode in the storage direction of the extension frame. Each transverse rod is provided with a first limiting step corresponding to the second limiting step in a step-by-step mode so that the second limiting steps can eject the corresponding transverse rods out of the storage groove in sequence. The transverse rods can be sequentially pulled out by the extension frames for use, only after the transverse rods on the outer side are completely pulled out and fall to the bearing parts, the next transverse rod begins to be pulled out, the number of the pulled-out transverse rods can be selected according to actual needs, the distance between the transverse rods is fixed, and the experience feeling of unfolding and storing is high.

Description

Technical Field

[0001] The utility model belongs to the field of brackets, and particularly relates to an expandable bracket. Background Art

[0002] In daily life, brackets are often needed to hang items. Traditional brackets are usually made of metal or plastic and are fixed to the wall or stand on the ground.

[0003] In the patent with the publication number CN201901786U and the patent name "An Expandable Bracket", a clothes drying bracket fixed to the wall is disclosed. It includes a fixed base and an adjustable rod body. The fixed base has fixed screw holes and is fixed to the wall through screws, and is provided with a positioning screw block. The adjustable rod body is provided with a track, and the end of the track is provided with a positioning groove. The positioning screw block is embedded in the track, enabling the base to slide along the track. This bracket can conveniently adjust the angle between the hanging rod body and the base. However, it is only suitable for installation on vertical walls. If more things need to be hung, several more must be installed on the wall, which will inevitably cause excessive occupation of the wall surface.

[0004] In the patent with the publication number CN2089943U and the patent name "Household Clothes Drying Bracket", it includes two parts: a support frame and a clothes drying rack. The support frame is vertically installed on the ground and fixed to a movable base. Two clothes drying racks are installed on both sides of the support frame, and clothes drying rods are evenly distributed on each clothes drying rack. The clothes drying rack is connected to the support frame through a rotating shaft, and a movable support bar is provided in the middle. The other end of the support bar cooperates with the protruding nail on the support frame to ensure that the clothes drying rack remains horizontally fixed when unfolded. This clothes drying rack is designed to be convenient for folding and opening, with simple operation, providing a large amount of clothes drying space and being suitable for daily household use. However, its disadvantage is also that it occupies a large amount of ground space, has a large volume, and the volume after folding is also large.

[0005] In addition, there are also brackets suspended from the ceiling. The most common one is the Chinese patent with the publication number CN202576958U and the utility model name "An Expandable Bracket". Its structure is very simple. The hanging rod is hoisted on the ceiling, and the hook below is used to hang items. However, it cannot be expanded, and the number of items that can be hung is small. If its volume is enlarged, it will occupy the ceiling space when no items are hung, causing visual chaos.

[0006] In the utility model patent application with the publication number CN114045644A and the utility model name "An Intelligent Clothes Drying Rack", a structure in which the drying rods can be retracted and unfolded is disclosed. This structure can reduce the occupation of the ceiling area when retracted. However, its disadvantage is that each drying rod will be pulled out and retracted simultaneously, and the outermost drying rod cannot be used until it is fully pulled out.

[0007] In the utility model patent application with publication number CN207699887U and utility model name “A smart clothes drying rack”, it is disclosed that both ends of the main frame body 26 are provided with extension rods 27 that are telescopic along the length direction of the drying rod, the connecting piece 23 is connected to the end of the extension rod 27, and the hanging piece 3 is connected to the lower side of the main frame body 26. The provided extension rod 27 extends the length of the first drying rod 21 and the second drying rod 22.

[0008] In the US patent with publication number USD1032277S1 and patent name "BBQ Grill", an expandable and foldable bracket is also shown, but this structure is not suitable when only a little expansion is needed and it does not need to be fully spread out. Summary of the invention

[0009] The technical problem to be solved by the utility model is to provide an expandable bracket with multiple drying rods to ensure that the drying rods can be completely pulled out step by step in view of the current status of the above-mentioned prior art.

[0010] The technical solution adopted by the utility model to solve the above technical problems is: an expandable bracket, including a main frame body and an extension frame connected by a pull-out structure, the main frame body is provided with a storage slot, the opening of the storage slot is facing the pull-out direction of the extension frame, and more than two cross bars are provided in the storage slot, and the cross bars are perpendicular to the pull-out direction of the extension frame; the extension frame is provided with a supporting part for supporting the cross bars. The extension frame is provided with second limiting steps with the same number as the cross bars, and all the second limiting steps are distributed in a stepped manner along the storage direction of the extension frame; each cross bar is respectively provided with a first limiting step corresponding to the second limiting step step by step, so that the second limiting step can push the corresponding cross bar out of the storage slot in sequence.

[0011] In a preferred solution, a gap is provided between the cross bar and the supporting portion when the cross bar is in the storage slot. Such a setting can prevent the cross bar from being pulled when the extension frame is pulled out, but the corresponding cross bar will be pulled out by the extension frame only after the corresponding second limit step reaches the corresponding first limit step.

[0012] In a preferred solution, a slope is provided at the entrance of the storage groove, and the slope can guide the cross bar to separate from the supporting part during the process of retrieving the cross bar.

[0013] In a preferred solution, the pull-out structure includes two extension rods on the extension frame and a first slideway on the main frame body, the extension rods are in the first slideway; there are two storage slots, which are respectively arranged on the two first slideways facing each other. The storage slots and the first slideway are interconnected, which can make the deployment and folding of the crossbar smoother.

[0014] In a preferred embodiment, each of the two extension rods is provided with second sliding grooves arranged opposite to each other. The cross bar includes sliders located at both ends of itself, and the sliders are located in the second sliding grooves. When the cross bar is in the storage groove, it is also in the second sliding groove, which increases the response speed when the extension rod is pulled out from the first sliding groove, enabling the second limiting step to timely push out the corresponding cross bar from the storage groove in sequence.

[0015] In a preferred embodiment, the cross bar is further provided with a third limiting step, and the orientation of the third limiting step is the same as the direction in which the cross bar is pulled out. The extension rod is provided with a bump that abuts against the third limiting step, and the bump and the second limiting step together limit the sliding of the cross bar on the supporting portion. The bump abuts against the third limiting step to limit the cross bar from continuing to move along the direction in which the extension rod is pulled out.

[0016] In a preferred embodiment, when the cross bar is in the storage groove, the bump is located below the first limiting step, so that the bump will not touch the cross bar when the extension rod is pulled out until the cross bar falls between the bump and the second limiting step.

[0017] In a preferred embodiment, the first limiting step and the third limiting step are located on the limiting protrusions, and the limiting protrusions are located at both ends of the cross bar; the extension rod includes a main shell provided with a second sliding groove and a guide bar located in the second sliding groove, and the second limiting step is located on the guide bar.

[0018] In a preferred embodiment, the second sliding groove includes a first groove body for placing the guide bar and a second groove body for placing the slider, and there is a gap between the guide bar and the slider. As the extension rod is pulled out, due to the gap between the guide bar and the slider, the guide bar will not involve the slider, so it will not involve the cross bar either.

[0019] The number of storage grooves can also be one, and such a structure is simpler. The supporting portion can be arranged on the guide bar or on the main shell.

[0020] In summary, compared with the prior art, the present utility model adds a storage groove on the main frame body for storing a plurality of cross bars. These cross bars can be sequentially pulled out and used by the extension frame when needed. And during the pulling-out process, only after the outermost cross bar is completely pulled out and falls on the supporting portion, the next cross bar will start to be pulled out. Such a structure can select the number of cross bars to be pulled out according to actual needs, and the distance between the cross bars is fixed, providing a strong experience in unfolding and storing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of Embodiment 1;

[0022] Figure 2 is Figure 1 exploded schematic diagram of

[0023] Figure 3Schematic diagram of the state of retracting the extension rack;

[0024] Figure 4 It is Figure 1 Schematic diagram of the internal structure of part A in;

[0025] Figure 5 It is Figure 4 Exploded schematic diagram of;

[0026] Figure 6 Schematic diagram of the structure of the mating cross-section of the extension rod and the cross bar;

[0027] Figure 7 It is Figure 6 Exploded schematic diagram of;

[0028] Figure 8 It is Figure 1 Enlarged schematic diagram of part B in;

[0029] Figure 9 It is Figure 2 Enlarged schematic diagram of part C in;

[0030] Figure 10 Schematic diagram of the storage state of the cross bar of the first embodiment in the storage groove;

[0031] Figure 11 Schematic diagram of the state where the extension rack successively ejects the cross bar;

[0032] Figure 12 Schematic diagram of the state where the extension rack ejects all the cross bars;

[0033] Figure 13 Schematic diagram with a gap a provided between the supporting part and the cross bar;

[0034] Figure 14 Schematic diagram of the storage state structure of the third embodiment;

[0035] Figure 15 Schematic diagram of the state of pulling out the extension rack of the third embodiment;

[0036] Figure 16 It is Figure 14 Schematic diagram of the internal structure of;

[0037] Figure 17 It is Figure 15 Schematic diagram of the internal structure of;

[0038] Figure 18 It is Figure 14 Exploded structure schematic diagram of;

[0039] Figure 19 Schematic diagram of the structure of the first limiting step on the cross bar and the second limiting step on the extension rack of the fourth embodiment. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings.

[0041] The figures are marked as follows: main frame body 1, first slide 11, extension frame 2, extension rod 21, main shell 211, guide bar 212, second slide 22, first slot body 23, second slot body 24, second limiting step 26, supporting part 27, protrusion 28, cross bar 3, limiting protrusion 31, first limiting step 311, third limiting step 312, slider 32, storage slot 4, ramp 41.

[0042] Embodiment 1, as Figures 1 to 13 As shown, an expandable bracket, such as Figures 1 to 3 As shown, it includes a main frame body 1 and an extension frame 2 connected by a pull-out structure; Figure 8 , 9 As shown, the main frame body 1 is provided with a storage slot 4, and the opening of the storage slot 4 faces the withdrawal direction of the extension frame 2; Figure 10 , 11 As shown, more than two cross bars 3 are provided in the storage slot 4, and the cross bars 3 are perpendicular to the withdrawal direction of the extension frame 2; Figure 4 , 5 As shown, the extension frame 2 is provided with a supporting portion 27 for supporting the crossbar 3. Figure 4 , 5 As shown in Figures 10, 11 and 12, the extension frame 2 is provided with second limiting steps 26 whose number is the same as the cross bars 3, and all the second limiting steps 26 are distributed in a stepped manner along the storage direction of the extension frame 2; each cross bar 3 is respectively provided with a first limiting step 311 which corresponds step by step to the second limiting step 26, so that the second limiting step 26 can push the corresponding cross bar 3 out of the storage slot 4 in sequence.

[0043] Embodiment 2: Embodiment 2 is a further optimization based on the implementation of embodiment 1. In embodiment 2, Figure 13 As shown, when the cross bar 3 is in the storage groove 4, there is a gap between the cross bar 3 and the supporting portion 27. This arrangement can prevent the cross bar 3 from being pulled when the extension frame 2 is pulled out, but waits until the corresponding second limiting step 26 hits the corresponding first limiting step 311, and then the corresponding cross bar 3 is pulled out by the extension frame 2.

[0044] In the embodiment, Figure 8 , 9 As shown in FIGS. 10 , 12 and 13 , a slope 41 is provided at the entrance of the storage groove 4 , and the slope 41 can guide the cross bar 3 to separate from the supporting portion 27 during the recovery process of the cross bar 3 .

[0045] In the embodiment, Figures 1 to 3As shown, the pull-out structure includes two extension rods 21 located on the extension frame 2, and a first slideway 11 located on the main frame body 1 as shown in Figure 9 . The extension rods 21 are within the first slideway 11. There are two receiving grooves 4, which are respectively arranged oppositely on the two first slideways 11. As shown in Figure 9 , the receiving groove 4 and the first slideway 11 are interconnected, so that the unfolding and folding of the cross bar 3 can be smoother.

[0046] In the embodiment, as shown in Figure 5 , the cross bar 3 includes sliders 32 at both ends of itself. The two extension rods 21 are respectively provided with second slideways 22 arranged oppositely to each other. As shown in Figure 7 , the sliders 32 are within the second slideways 22. When the cross bar 3 is in the receiving groove 4, it is also within the second slideways 22, which increases the response speed when the extension rods 21 are pulled out from the first slideway 11, so that the corresponding cross bar 3 can be sequentially pushed out of the receiving groove 4 by the second limiting step 26 in a timely manner.

[0047] In the embodiment, as shown in Figure 4 , 5 , 10, 11, 12, the cross bar 3 is further provided with a third limiting step 312, and the orientation of the third limiting step 312 is the same as the direction in which the cross bar 3 is pulled out; as shown in Figure 4 , 5 , the extension rod 21 is provided with a bump 28 that abuts against the third limiting step 312. The bump 28 and the second limiting step 26 together limit the sliding of the cross bar 3 on the supporting portion 27. The bump 28 abuts against the third limiting step 312 to limit the cross bar 3 from continuing to move along the direction in which the extension rod 21 is pulled out.

[0048] In the embodiment, when the cross bar 3 is in the receiving groove 4, the bump 28 is located below the first limiting step 311. In this way, the bump 28 will not touch the cross bar 3 when the extension rod 21 is pulled out until the cross bar 3 falls between the bump 28 and the second limiting step 26.

[0049] In the embodiment, as shown in Figure 4 , 5 , the first limiting step 311 and the third limiting step 312 are located on the limiting convex 31, and the limiting convex 31 is located at both ends of the cross bar 3; the extension rod 21 includes a main shell 211 provided with the second slideway 22 and a guide bar 212 located within the second slideway 22, and the second limiting step 26 is located on the guide bar 212.

[0050] In the embodiment, as shown in Figures 4 to 7As shown, the second slideway 22 includes a first groove body 23 for placing the guide bar 212 and a second groove body 24 for placing the slider 32, and there is a gap between the guide bar 212 and the slider 32. As the extension rod 21 is pulled out, due to the gap between the guide bar 212 and the slider 32, the guide bar 212 will not affect the slider 32, so it will not affect the cross bar 3 either.

[0051] In the second embodiment, the supporting part 27 is located at the bottom of the second groove body 24, as Figure 5 shown.

[0052] Embodiment 3, as Figures 14 to 18 shown. Embodiment 3 is a further optimization based on Embodiment 1. The number of the storage grooves 4 is one, which is located above the extension frame 2. The first limiting step 311 is arranged on the limiting convex 31 under the cross bar 3, and the third limiting step 312 is the side surface of the cross bar 3 itself. The extension frame 2 of Embodiment 3 is more like a drawer pulled out from the main frame body 1 and is more suitable for a barbecue grill. The bump 28 is located on the extension frame 2.

[0053] When using Embodiment 3, only need to pull out the extension frame 2 like pulling a drawer, and the second limiting step 26 on the extension frame 2 will push out the corresponding cross bar 3 from the storage groove 4 in sequence.

[0054] Embodiment 4. The structure of Embodiment 4 is similar to that of Embodiment 2, the difference is that there is no limiting convex 31, but there are still the first limiting step 311 and the third limiting step 312. The first limiting step 311 is an inward concave step arranged on the cross bar 3, the third limiting step 312 is the side surface of the cross bar 3 itself, and the second limiting step 26 is a convex structure arranged on the extension frame 2, as Figure 19 shown.

[0055] The best embodiments of the present utility model have been illustrated, and various changes or modifications made by those of ordinary skill in the art will not depart from the scope of the present utility model.

Claims

1. An expandable bracket, comprising a main bracket body (1) and an extension bracket (2) connected by a pull-out structure, characterized in that: A storage groove (4) is provided on the main frame body (1), the opening of the storage groove (4) faces the direction of the extension frame (2) to be pulled out, and two or more cross bars (3) are provided in the storage groove (4), and the cross bars (3) are perpendicular to the direction of the extension frame (2) to be pulled out; the extension frame (2) is provided with a supporting portion (27) for supporting the cross bars (3); The extension frame (2) is provided with second limiting steps (26) whose number is the same as that of the cross bars (3), and all the second limiting steps (26) are distributed in a stepped manner along the storage direction of the extension frame (2); each cross bar (3) is respectively provided with a first limiting step (311) corresponding to the second limiting step (26) step by step, so that the second limiting step (26) can push the corresponding cross bar (3) out of the storage groove (4) in sequence.

2. The expandable stent according to claim 1, characterized in that: When the cross bar (3) is in the storage groove (4), a gap is provided between the cross bar (3) and the supporting portion (27).

3. The expandable stent according to claim 2, characterized in that: The entrance of the storage groove (4) is provided with a slope (41) for guiding the cross bar (3) to separate from the supporting portion (27) when the cross bar (3) is retracted.

4. The expandable stent according to claim 3, characterized in that: The number of the storage slot (4) is one, and the storage slot (4) is located above the extension frame (2).

5. The expandable bracket according to claim 3, characterized in that: The pull-out structure comprises two extension rods (21) located on the extension frame (2), and a first slideway (11) located on the main frame body (1), and the extension rods (21) are in the first slideway (11); the number of the storage slots (4) is two, which are respectively arranged on the two first slideways (11) facing each other.

6. The expandable stent according to claim 5, characterized in that: The crossbar (3) comprises sliding blocks (32) at both ends thereof, and the two extension rods (21) are respectively provided with second slideways (22) arranged opposite to each other, and the sliding blocks (32) are located in the second slideways (22).

7. The expandable stent according to claim 6, characterized in that: The cross bar (3) is further provided with a third limiting step (312), the direction of the third limiting step (312) being the same as the direction in which the cross bar (3) is pulled out, and the extension rod (21) is provided with a protrusion (28) which presses against the third limiting step (312), and the protrusion (28) and the second limiting step (26) together limit the sliding of the cross bar (3) on the supporting portion (27).

8. The expandable stent according to claim 7, characterized in that: When the cross bar (3) is in the receiving groove (4), the protrusion (28) is located below the first limiting step (311).

9. The expandable stent according to claim 8, characterized in that: The first limiting step (311) and the third limiting step (312) are located on the limiting protrusion (31), and the limiting protrusion (31) is located at both ends of the cross bar (3); the extension rod (21) comprises a main shell (211) provided with a second slideway (22), and a guide bar (212) located in the second slideway (22), and the second limiting step (26) is located on the guide bar (212).

10. The expandable stent according to claim 9, characterized in that: The second slideway (22) comprises a first groove body (23) for accommodating the guide bar (212) and a second groove body (24) for accommodating the slider (32), and a gap is provided between the guide bar (212) and the slider (32).

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