Adjustable support for furniture

Abstract

An adjustable support for furniture, comprising a base and a plurality of support members movably connected to the base. The base comprises a lower portion and an upper portion covering the lower portion; the support members comprise a plurality of lower support members pivotally connected to the lower portion; the lower portion comprises a lower receiving portion which receives the lower support members and defines a central channel, a screw shaft penetrating through the central channel, and a knob arranged at the lower end of the screw shaft; the screw shaft is provided with a hemispherical screw head distant from the knob; each lower support member comprises a support leg arranged on a mounting surface and a connecting portion arranged close to the lower receiving portion; the connecting portion comprises a first elastic piece connected to the lower receiving portion and an end portion distant from the mounting surface; when the support leg is located at a folded position, the end portion abuts against the inner side wall of the upper portion; and when the support leg is located at an unfolded position, the end portion is tangent to the screw head, and the point of tangency to the screw head can be changed under the action of the knob.

Description

Adjustable bracket for furniture Technical Field

[0001] The present invention relates to the technical field of leisure products, in particular to an adjustable bracket for furniture. Background Art

[0002] With the development of the economy, urban people often choose to go out and enjoy outdoor life in order to relax. Technical issues

[0003] Outdoor activities, such as fishing and camping, often require portable furniture such as tables and chairs. However, common portable tables and chairs are only foldable, with a single way of use and lacking adaptability and fun to different needs. Technical Solutions

[0004] Based on this, it is necessary to propose an adjustable bracket for furniture to solve the problem of single usage of portable furniture.

[0005] The present invention provides an adjustable bracket for furniture, comprising a base and a plurality of support members movably connected to the base, the base comprising a lower part and an upper part covering the lower part, the support member comprising three or more lower support members pivotally connected to the lower part, the lower part comprising a lower receiving part for receiving the lower support member and surrounding a central channel, a screw rod passing through the central channel and a knob arranged at the lower end of the screw rod, the side wall of the central channel is provided with a thread corresponding to the screw rod, the screw rod has a hemispherical nut away from the knob, the lower support member comprises a support leg for being arranged on a mounting surface and a connecting part arranged near the lower receiving part, the connecting part comprises a first elastic member connecting the lower receiving part and an end away from the mounting surface, when the support leg is in a retracted position, the end portion abuts against the inner side wall of the upper part, when the support leg is in an extended position, the end portion is tangent to the nut and the point of tangency with the nut can be changed under the action of the knob.

[0006] Preferably, a tooth portion is provided at one end of the supporting leg away from the mounting surface, and the tooth portions of the multiple supporting legs are meshed to achieve linkage.

[0007] Preferably, the lower receiving portion is provided with a mounting hole, and the first elastic member is a torsion spring with one end fixed to the mounting hole and the other end fixed to an end of the connecting portion away from the lower receiving portion.

[0008] Preferably, the support member further includes three or more upper support members movably connected to the upper portion.

[0009] Preferably, the upper part includes a middle axis part, an upper receiving part arranged around the middle axis part for receiving the upper support part, and a top cover fixed to the top end of the middle axis part and covering the upper receiving part. A second elastic part and a third elastic part arranged at upper and lower intervals are provided between the middle axis part and the upper receiving part. When the upper receiving part rotates with the middle axis part as the axis, the upper receiving part is reset under the action of the second elastic part or the third elastic part.

[0010] Preferably, the second elastic member is a torsion spring with one end abutting against the top cover and the other end abutting against the upper receiving portion, and the third elastic member is a torsion spring with one end abutting against the middle shaft and the other end abutting against the upper receiving portion.

[0011] Preferably, the upper support member is a telescopic rod with one end pivotally connected to the upper receiving portion. Beneficial effects

[0012] The adjustable support for furniture provided by the present invention includes a base and a plurality of support members movably connected to the base, the base including a lower portion and an upper portion covering the lower portion, the support members including three or more lower support members pivotally connected to the lower portion, the lower portion including a lower receiving portion for receiving the lower support members and forming a central channel, a screw extending through the central channel, and a knob disposed at the lower end of the screw, the sidewalls of the central channel being provided with threads corresponding to the screw, the screw having a hemispherical nut distal to the knob, the lower support members including legs for mounting on a mounting surface and a connecting portion disposed proximate to the lower receiving portion, the connecting portion including a first elastic member connected to the lower receiving portion and an end distal to the mounting surface, the end portions of the legs abutting against the inner sidewalls of the upper portion when the legs are in a retracted position, and the end portions being tangent to the nut when the legs are in an extended position, and the point of tangency with the nut being adjustable by the knob. The adjustable support for furniture provided by the present invention can smoothly change the angle of the legs when they are deployed by adjusting the point of tangency between the end portions and the nut by turning the knob, thereby achieving the purpose of adjusting the height of the base relative to the mounting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] FIG1 is a combined view of an adjustable bracket for furniture provided by one embodiment;

[0015] FIG2 is an exploded view of an adjustable bracket for furniture provided in one embodiment;

[0016] FIG3 is a cross-sectional view of an adjustable bracket for furniture in a stowed position according to one embodiment;

[0017] FIG4 is a cross-sectional view of an adjustable bracket for furniture in an expanded position according to one embodiment; and

[0018] FIG5 is a cross-sectional view of an adjustable support for furniture in another unfolded position according to an embodiment. Best Mode for Carrying Out the Invention

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not intended to indicate or imply relative importance.

[0021] As shown in Figures 1 to 5, the present invention provides an adjustable bracket 100 for furniture, including a base 1 and a plurality of support members 2 movably connected to the base 1, the base 1 includes a lower portion 11 and an upper portion 12 covering the lower portion 11, and the support member 2 includes three or more lower support members 21 pivotally connected to the lower portion 11.

[0022] Specifically, the lower part 11 includes a lower receiving part 111 that receives the lower support member 21 and forms a central channel 110, a screw 112 that passes through the central channel 110, and a knob 113 arranged at the lower end of the screw 112. The side wall of the central channel 110 is provided with a thread corresponding to the screw 112, and the screw 112 has a hemispherical nut 1120 away from the knob 113.

[0023] The lower support member 21 includes a leg 211 for mounting on a mounting surface (e.g., the ground) and a connecting portion 212 disposed proximate to the lower receiving portion 111. The connecting portion 212 includes a first elastic member 2120 connected to the lower receiving portion 111 and an end 2121 distal from the mounting surface. In this embodiment, the lower receiving portion 111 is provided with a mounting hole (unnumbered). The first elastic member 2120 is a torsion spring with one end secured to the mounting hole and the other end secured to the end of the connecting portion 212 distal from the lower receiving portion 111. It will be appreciated that in other embodiments, other elastic elements, such as springs, may be used in place of the torsion spring.

[0024] When the legs 211 are in the stowed position, the ends 2121 abut against the inner sidewall 120 of the upper portion 12. When the legs 211 are in the extended position, the ends 2121 are tangential to the nut 1120, and the point of tangency with the nut 1120 can be changed under the control of the knob 113. Specifically, when the legs 211 are in the stowed position, the legs 211 are substantially parallel, and the first surfaces 2121a of the ends 2121 abut against the inner sidewall 120 of the upper portion 12. At this point, the legs 211 are extended and rotate about the lower receiving portion 111 under the control of the first elastic member 2120. The ends of the contact mounting surfaces of the legs 211 move away from each other, the first surfaces 2121a of the ends 2121 leave the inner sidewall 120 of the upper portion 12, and the second surfaces 2121b of the ends 2121 move downward until they are tangential to the nut 1120, at which point the legs 211 reach the extended position. By rotating the knob 113 at the lower end of the screw 112, the screw 112 can move upward or downward in the central channel 110, driving the nut 1120 to move up or down. When the nut 1120 moves, the tangent point between the second surface 2121b of the end 2121 and the nut 1120 changes accordingly. Specifically, as shown in FIG4 , when the nut 1120 is at its lowest point, the point of contact between the second surface 2121b and the nut 1120 is closest to the central axis of the central channel 110 . At this point, the legs 211 are at their widest angle, the distance between the lower portion 11 and the mounting surface is at its smallest, and the height of the adjustable bracket 100 is at its lowest. As shown in FIG5 , when the knob 113 is rotated to gradually raise the nut 1120 from its lowest point, the point of contact between the second surface 2121b and the nut 1120 gradually moves away from the central axis of the central channel 110 . At this point, the angle of contact between the legs 211 gradually decreases, the distance between the lower portion 11 and the mounting surface gradually increases, and the height of the adjustable bracket 100 gradually increases. It is understood that to lower the height of the adjustable bracket 100, rotating the knob 113 in the opposite direction lowers the nut 1120, causing the point of contact between the second surface 2121b and the nut 1120 to gradually move closer to the central axis of the central channel 110 , and the angle of contact between the legs 211 gradually increases.

[0025] By changing the point of intersection between the end and the nut by turning the knob 113 , the angle of the legs 211 can be smoothly changed, thereby adjusting the height of the base 1 relative to the mounting surface and further changing the height of the adjustable bracket 100 .

[0026] Preferably, a tooth portion (not numbered) is provided at one end of the support leg 211 away from the mounting surface, and the tooth portions of the plurality of support legs 211 are meshed to achieve linkage, thereby facilitating the unfolding or folding of the support legs 211 .

[0027] Furthermore, the support member 2 also includes three or more upper support members 22 movably connected to the upper portion 12. The upper portion 12 includes a central axis portion 121, an upper receiving portion 122 disposed around the central axis portion 121 for receiving the upper support members 22, and a top cover 123 fixed to the top of the central axis portion 121 and covering the upper receiving portion 122. Modes for Carrying Out the Invention

[0028] As shown in FIG5 , a second elastic member 124 and a third elastic member 125 are provided between the central axis 121 and the upper receiving portion 122, spaced apart from one another. When the upper receiving portion 122 rotates about the central axis 121, the upper receiving portion 122 is reset under the action of the second elastic member 124 or the third elastic member 125. Specifically, the second elastic member 124 is a torsion spring with one end abutting against the top cover 123 and the other end abutting against the upper receiving portion 122. The third elastic member 125 is a torsion spring with one end abutting against the central axis 121 and the other end abutting against the upper receiving portion 122. When the upper receiving portion 122 rotates to one side about the central axis 121, the second elastic member 124 is forced to rebound, causing the upper receiving portion 122 to return to its initial position. When the upper receiving portion 122 rotates to the other side about the central axis 121, the third elastic member 125 is forced to rebound, causing the upper receiving portion 122 to return to its initial position. In this way, the upper portion 12 can be reset by rotating left or right, which increases the fun of using the adjustable bracket 100.

[0029] Preferably, the upper support member 22 is a telescopic rod with one end pivotally connected to the upper receiving portion 122. The upper support member 22 can rotate about the upper receiving portion 122. When the upper support member 22 is rotated above the upper receiving portion 122 and a tablecloth or seat fabric is attached to the end of the upper support member 22 away from the upper receiving portion 122, the adjustable stand 100 can be transformed into a portable table or portable chair. It is understood that the lengths of the upper support members 22 can be uniform or non-uniform. For example, when the lengths of the upper support members 22 are uniform, the adjustable stand 100 can function as a table or stool; when the lengths of the upper support members 22 are non-uniform, the adjustable stand 100 can function as a chair or hammock. In other embodiments, the upper support member 22 can be a single or multi-section tube pivotally connected to or detachably connected to the upper receiving portion 122 rather than a telescopic rod.

[0030] The adjustable support for furniture provided by the present invention includes a base and a plurality of support members movably connected to the base, the base including a lower portion and an upper portion covering the lower portion, the support members including three or more lower support members pivotally connected to the lower portion, the lower portion including a lower receiving portion for receiving the lower support members and forming a central channel, a screw extending through the central channel, and a knob disposed at the lower end of the screw, the sidewalls of the central channel being provided with threads corresponding to the screw, the screw having a hemispherical nut distal to the knob, the lower support members including legs for mounting on a mounting surface and a connecting portion disposed proximate to the lower receiving portion, the connecting portion including a first elastic member connected to the lower receiving portion and an end distal to the mounting surface, the end portions of the legs abutting against the inner sidewalls of the upper portion when the legs are in a retracted position, and the end portions being tangent to the nut when the legs are in an extended position, and the point of tangency with the nut being adjustable by the knob. The adjustable support for furniture provided by the present invention can smoothly change the angle of the legs when they are deployed by adjusting the point of tangency between the end portions and the nut by turning the knob, thereby achieving the purpose of adjusting the height of the base relative to the mounting surface.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable support for furniture, comprising a base and a plurality of support members movably connected to the base, characterized in that: The base includes a lower part and an upper part covering the lower part, the support member includes three or more lower support members pivotally connected to the lower part, the lower part includes a lower receiving part that receives the lower support member and surrounds a central channel, a screw rod that passes through the central channel and a knob arranged at the lower end of the screw rod, the side wall of the central channel is provided with a thread corresponding to the screw rod, the screw rod has a hemispherical nut away from the knob, the lower support member includes a leg for being arranged on a mounting surface and a connecting part arranged near the lower receiving part, the connecting part includes a first elastic member connected to the lower receiving part and an end away from the mounting surface, when the leg is in a retracted position, the end portion abuts against the inner side wall of the upper part, when the leg is in an expanded position, the end portion is tangent to the nut and the point of tangency with the nut can be changed under the action of the knob.

2. The adjustable bracket for furniture according to claim 1, characterized in that: A tooth portion is provided at one end of the supporting leg away from the mounting surface, and the tooth portions of a plurality of the supporting legs are meshed to achieve linkage.

3. The adjustable bracket for furniture according to claim 1, characterized in that: The lower receiving portion is provided with a mounting hole, and the first elastic member is a torsion spring with one end fixed to the mounting hole and the other end fixed to an end of the connecting portion away from the lower receiving portion.

4. The adjustable bracket for furniture according to claim 1, characterized in that: The support member further comprises three or more upper support members movably connected to the upper portion.

5. The adjustable bracket for furniture according to claim 4, characterized in that: The upper part includes a middle axis part, an upper receiving part arranged around the middle axis part for receiving the upper support part, and a top cover fixed to the top end of the middle axis part and covering the upper receiving part. A second elastic member and a third elastic member arranged with upper and lower intervals are provided between the middle axis part and the upper receiving part. When the upper receiving part rotates with the middle axis part as the axis, the upper receiving part is reset under the action of the second elastic member or the third elastic member.

6. The adjustable bracket for furniture according to claim 5, characterized in that: The second elastic member is a torsion spring with one end abutting against the top cover and the other end abutting against the upper receiving portion. The third elastic member is a torsion spring with one end abutting against the middle shaft and the other end abutting against the upper receiving portion.

7. The adjustable bracket for furniture according to claim 4, characterized in that: The upper support member is a telescopic rod with one end pivotally connected to the upper receiving portion.

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