Adjustable base and supporting rod

Abstract

The utility model discloses a supporting rod and an adjustable base, the adjustable base comprises a base body, a cover body and an axial locking structure, the cover body is rotatably connected with the base body, a rotary jacking structure is arranged between the cover body and the base body, and the rotary jacking structure is configured to convert rotation of the cover body into relative movement of the base body and the cover body along the axial direction of the cover body; the axial locking structure is connected with the cover body and the base body and used for limiting the base body and the cover body to be separated in the axial direction. According to the adjustable base of the supporting rod disclosed by the embodiment of the utility model, the end part of the supporting rod can be locked to support the wall body only by rotating the cover body, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to an adjustable base and a support rod. Background Art

[0002] A punch-free support rod is supported between two walls for hanging objects. The support rod in related art consists of a rod body, a base, and an adjustment tube. The adjustment tube is connected to the base and then threadedly connected to the rod body to enable fine-tuning of the base. Typically, the rod body and adjustment tube are separated when the user receives the product. The user needs to rotate the adjustment tube in one direction to install it onto the rod body, and then rotate it in the other direction to fine-tune the support wall. This installation operation is complicated and can easily lead to errors (such as rotating the adjustment tube the wrong way), which can prevent fine-tuning and tightening. Utility Model Content

[0003] One purpose of the utility model is to provide an adjustable base and support rod, which are easy to install and operate.

[0004] According to the adjustable base of the support rod of the embodiment of the present utility model, it includes: a base body; a cover body, the cover body is rotatably connected to the base body, a screw-top structure is provided between the cover body and the base body, and the screw-top structure is configured to convert the rotation of the cover body into relative movement of the base body and the cover body along the axial direction of the cover body; an axial locking structure, the axial locking structure connects the cover body and the base body, and is used to limit the separation of the base body and the cover body along the axial direction.

[0005] According to the adjustable base of the support rod of the embodiment of the utility model, the end of the support rod can be locked to support the wall by simply rotating the cover body, which is simple and convenient to operate.

[0006] In addition, the adjustable base of the support rod according to the above embodiment of the present invention may also have the following additional technical features:

[0007] In some embodiments, the screw-on structure includes a first spiral guide surface and a screw-on block, one of the first spiral guide surface and the screw-on block is provided on the cover body, and the other is provided on the base body, the first spiral guide surface is provided to extend spirally around the axis of the cover body, and the screw-on block abuts against the first spiral guide surface along the axial direction.

[0008] In some embodiments, the spiral slope of the first spiral guide surface is set to be greater than or equal to 1.5° and less than or equal to 12°.

[0009] In some embodiments, the first spiral guide surfaces include at least two surfaces distributed around the axis of the cover body, and the top screw block includes at least two surfaces corresponding to the at least two first spiral guide surfaces.

[0010] In some embodiments, a stop portion is provided between adjacent first spiral guide surfaces, the stop portion protruding from the first spiral guide surface, and the stop portion is configured to stop the top screw block from sliding along the first spiral guide surface.

[0011] In some embodiments, the first spiral guide surface has a high surface, a middle surface and a low surface distributed along the direction around the axis of the cover body, the high surface is recessed relative to the middle surface, and a positioning step is constructed between the high surface and the middle surface.

[0012] In some embodiments, the base body includes a first surrounding wall, which surrounds the axis of the cover body and is configured to extend a certain height from the first bottom wall of the base body toward the cover body, and the first spiral guide surface is provided on the end surface of the first surrounding wall.

[0013] In some embodiments, the base body further includes a second surrounding wall, which surrounds the first surrounding wall and is configured to extend a certain height from the first bottom wall of the base body toward the cover body, and the height of the second surrounding wall is higher than the height of the first surrounding wall.

[0014] In some embodiments, the first surrounding wall and the second surrounding wall are spaced apart along the radial direction of the seat body; and / or, the cover body includes a second bottom wall and a third surrounding wall connected to the periphery of the second bottom wall, and at least a portion of the second surrounding wall is sleeved in the third surrounding wall; and / or, the second surrounding wall is provided with a flange portion, and the flange portion and the third surrounding wall are arranged opposite to each other along the axial direction.

[0015] In some embodiments, the screw-on structure includes a first threaded portion and a second threaded portion, the first threaded portion and the second threaded portion are threadedly matched, the first threaded portion is provided on the base body, and the second threaded portion is provided on the cover body.

[0016] In some embodiments, the base body includes a second surrounding wall, the second surrounding wall surrounds the axis of the cover body, the first threaded portion is arranged on the outer circumference of the second surrounding wall, the cover body includes a third surrounding wall, the third surrounding wall is sleeved on the outside of the second surrounding wall, and the second threaded portion is arranged on the inner circumference of the third surrounding wall.

[0017] In some embodiments, the cover body is provided with a first insertion hole for connecting the rod body of the support rod; and / or at least a portion of the base body is sleeved in the cover body.

[0018] In some embodiments, the base is provided with a positioning portion, and the positioning portion is provided at an end of the base facing away from the cover.

[0019] In some embodiments, the positioning portion is plug-connected to the base; and / or the positioning portion is configured as a flexible portion; and / or the positioning portion is configured as a gasket or a suction cup.

[0020] In some embodiments, the axial locking structure includes: a first locking portion, which connects the cover body and one of the base body; a second locking portion, which connects the cover body and the other of the base body, and the second locking portion passes through the first locking portion and limits the separation of the cover body and the base body along the axial direction.

[0021] In some embodiments, the first locking portion is provided with a first surface, the second locking portion is provided with a second surface, the first surface and the second surface are in relative abutment with each other along the axial direction, wherein at least one of the first surface and the second surface is configured as a second spiral guide surface that extends spirally around the axis of the cover body.

[0022] In some embodiments, the first locking portion includes a mounting hole and a first rib, the second locking portion includes a plurality of spring hooks with second ribs at their ends, the spring hooks are passed through the mounting hole, and the second rib passes over the first rib and is arranged opposite to the first rib along the axial direction, the first surface is arranged on the first rib, and the second surface is arranged on the second rib.

[0023] In some embodiments, the mounting hole is provided on the second bottom wall of the cover body, and the first rib is provided on the inner circumferential surface of the mounting hole or the periphery of the mounting hole is configured to form the first rib; or, the first locking portion further includes a limiting sleeve, the mounting hole is provided in the limiting sleeve, and the first rib is provided on the inner circumferential surface of the limiting sleeve or the limiting sleeve is configured to form the first rib along the axial end.

[0024] In some embodiments, the first locking portion is arranged at the center of the cover body, and the second locking portion is arranged at the center of the base body; the base body includes a first surrounding wall, the first surrounding wall surrounds the second locking portion, and an accommodating groove is formed between the second locking portion and the first surrounding wall, and the cover body includes a fourth surrounding wall, and the fourth surrounding wall is rotatably arranged in the accommodating groove.

[0025] According to an embodiment of the present invention, the support rod includes: a rod body; a first base, which is connected to one end of the rod body; and a second base, which is connected to the other end of the rod body, wherein at least one of the first base and the second base is set as the aforementioned adjustable base, and the cover body of the adjustable base is connected to the end of the rod body.

[0026] In some embodiments, the rod body includes an inner rod and an outer rod, one end of the inner rod is inserted into the outer rod, and an internal locking mechanism is provided. The internal locking mechanism is used to lock the inner rod and the outer rod after the inner rod extends a predetermined length relative to the outer rod.

[0027] In some embodiments, the inner locking mechanism is configured to lock the inner rod and the outer rod when the inner rod rotates around a first direction, and the screw-top structure is configured to eject the seat body when the cover body rotates around a second direction, and the first direction and the second direction are opposite circumferential directions.

[0028] According to the support rod and adjustable base of the present invention, the support rod can be initially abutted between the two walls by simply locking the lengths of the inner and outer rods. The adjustable base cover can then be directly rotated to enhance the pressing force of the base against the wall through the screw-on structure. Operation is simple and convenient, and the cover exerts a uniform pressing force on the base, achieving uniform contact between the base and the wall, further enhancing the pressing force between the base and the wall, and thereby enhancing the pressing force between the support rod and the wall. A positioning step is also utilized to maintain the abutment of the screw-on block against the high-level surface of the first spiral guide surface, thereby maintaining the base in a state of abutment against the wall and improving the stability of the adjustable base when abutting against the wall. Furthermore, an axial locking structure is provided between the cover and the base to limit separation of the base and the cover. The first and second surfaces of the axial locking structure are utilized to maintain the locked state between the first locking portion and the second locking portion during rotation of the cover, thereby achieving stable rotation and connection between the base and the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of an adjustable base according to an embodiment of the present invention.

[0030] Figure 2 It is a cross-sectional view of an adjustable base according to an embodiment of the present invention.

[0031] Figure 3 It is a cross-sectional view of an adjustable base according to an embodiment of the present invention.

[0032] Figure 4 It is an exploded schematic diagram of an adjustable base according to an embodiment of the present invention.

[0033] Figure 5 It is a schematic diagram of the seat body of the adjustable base according to one embodiment of the present invention.

[0034] Figure 6 It is a schematic diagram of a cover of an adjustable base according to an embodiment of the present invention.

[0035] Figure 7It is a partial cross-sectional view of an adjustable base according to an embodiment of the present utility model, wherein the top screw block is supported on the lower surface of the first spiral guide surface.

[0036] Figure 8 It is a partial cross-sectional view of an adjustable base according to an embodiment of the present utility model, wherein the top screw block is supported on the high surface of the first spiral guide surface.

[0037] Figure 9 It is a cross-sectional view of an adjustable base according to another embodiment of the present invention.

[0038] Figure 10 It is a cross-sectional view of an adjustable base according to an embodiment of the present invention.

[0039] Figure 11 It is a partial cross-sectional view of an adjustable base according to an embodiment of the present invention, wherein the second rib is provided on the low-level surface of the first surface.

[0040] Figure 12 yes Figure 11 A partial enlarged schematic diagram of the area A in the middle circle.

[0041] Figure 13 It is a partial cross-sectional view of an adjustable base according to an embodiment of the present invention, wherein the second rib is provided on the high-level surface of the first surface.

[0042] Figure 14 yes Figure 13 A partial enlarged schematic diagram of the area in the middle circle B.

[0043] Figure 15 It is a partial schematic diagram of the seat body of the adjustable base in one embodiment of the utility model.

[0044] Figure 16 It is a schematic diagram of a support rod according to an embodiment of the present invention.

[0045] Figure 17 It is an exploded schematic diagram of a support rod according to an embodiment of the present invention.

[0046] Figure 18 It is a partial schematic diagram of a cross-sectional view of a support rod according to an embodiment of the present invention, showing an inner locking mechanism.

[0047] Figure 19 It is a schematic diagram of the first step of the support rod installation step of an embodiment of the present invention.

[0048] Figure 20 It is a schematic diagram of the second step of the support rod installation process of an embodiment of the present invention.

[0049] Figure 21 It is a schematic diagram of the third step of the support rod installation process of an embodiment of the present invention.

[0050] Figure 22 yes Figure 21 A partial enlarged schematic diagram of the area C in the middle circle.

[0051] Reference numerals:

[0052] Support rod 100, rod body 10, inner rod 11, fixing sleeve 111, outer rod 12, first base 20a, second base 20b, adjustable base 20, base body 21, first bottom wall 211, first surrounding wall 212, second surrounding wall 213, flange portion 214, slot 2101, cover body 22, first insertion hole 221, second bottom wall 222, third surrounding wall 223, fourth surrounding wall 224, mounting hole 225, first spiral guide surface 231, middle surface 2310, high surface 2311, low surface 2312, stop portion 231 3. Positioning step 2314, screw-on block 232, first threaded portion 233, second threaded portion 234, first locking portion 241, second locking portion 242, second surface 2421, first surface 2411, first rib 2412, second rib 2422, snap hook 2423, protrusion 2413, positioning portion 25, plug-in portion 251, internal locking mechanism 30, screw assembly 31, screw portion 311, wedge-shaped pressing block 32, locking assembly 33, threaded sleeve 331, locking sleeve 332, first wall 200a, second wall 200b. DETAILED DESCRIPTION

[0053] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0054] Combine Figures 1 to 10 The utility model provides an adjustable base 20, which can be used for the support rod 100. The adjustable base 20 can increase the tightening force between the support rod 100 and the wall, thereby increasing the friction between the support rod 100 and the wall, so that the support rod 100 is set between the first wall 200a and the second wall 200b, and the support rod 100 can be used to support objects.

[0055] Specifically, the adjustable base 20 may include a base 21 and a cover 22, wherein the cover 22 is rotatably connected to the base 21, and a screw-on structure is provided between the cover 22 and the base 21. The screw-on structure is configured to convert the rotational motion of the cover 22 into relative movement of the base 21 and the cover 22 along the axial direction of the cover 22. In use, the following steps may be included: connecting the cover 22 to the rod 10 of the support rod 100; placing the base 21 against a wall (e.g., a wall surface, a cabinet panel, etc.); rotating the cover 22. Under the action of friction, the base 21 does not rotate with the cover 22, thereby allowing relative rotation between the cover 22 and the base 21. At this time, under the action of the screw-on structure, the cover 22 moves away from the base 21, thereby increasing the pressing force between the base 21 and the wall and increasing the friction between the base 21 and the wall. In this case, the rod 10 can support objects of a certain weight.

[0056] In addition, the adjustable base 20 may also include an axial locking structure that connects the cover 22 and the base 21 and is used to limit the axial separation of the base 21 and the cover 22. The axial locking structure is used to limit the position of the base 21 and the cover 22, preventing the base 21 from separating from the cover 22, thereby improving the stability of the adjustable base 20 and facilitating its use.

[0057] According to the adjustable base 20 of the embodiment of the present invention, the base can be abutted against the wall through the rotating top structure by simply rotating the cover 22. The operation is simple and convenient, and the tightening force between the base and the wall is enhanced.

[0058] In addition, unlike the related art that uses the rotational movement of the adjustment tube and the rod to adjust the pressing force between the base and the wall, the present invention uses the relative rotation of the cover 22 and the base 21 to achieve the pressing force between the adjustable base 20 and the wall. The cover 22 only needs to rotate in one direction to drive the base 21 to press against the wall, which simplifies the use of the support rod 100. In addition, the adjustable base 20 in the present invention eliminates the fine-tuning screw sleeve (or adjustment tube) in the related art, and uses the spiral displacement between the cover 22 and the base 21 to achieve telescopic displacement, simplifying the structure of the adjustable base. Moreover, the base 21 can abut the wall, and the rotation of the cover 22 is used to adjust the pressing force of the base 21 on the wall, making it easier for the base to abut the wall.

[0059] The rotating top structure in the present invention may include but is not limited to the following embodiments.

[0060] Implementation Method 1

[0061] like Figure 2 and Figure 3The screw-top structure includes a first spiral guide surface 231 and a screw-top block 232 . The first spiral guide surface 231 is arranged to surround the axis of the cover body 22 and extend spirally along the axis. The screw-top block 232 abuts against the first spiral guide surface 231 along the axial direction of the cover body 22 .

[0062] One of the first spiral guide surface 231 and the top screw block 232 can be provided on the cover body 22, and the other can be provided on the base body 21. Examples thereof include but are not limited to the following:

[0063] Example 1, the first spiral guide surface 231 is provided on the cover body 22, and the screw-top block 232 is provided on the base body 21, wherein in the first rotation direction around the axis of the cover body 22, the first spiral guide surface 231 is inclined toward the base body 21, and when the cover body 22 rotates along the first rotation direction, different positions of the first spiral guide surface 231 abut against the screw-top block 232, thereby pushing the base body 21 away from the cover body 22.

[0064] Example 2, the first spiral guide surface 231 is provided on the base body 21, and the screw-top block 232 is provided on the cover body 22, wherein in the first rotation direction around the axis of the cover body 22, the first spiral guide surface 231 is inclined toward the cover body 22, and when the cover body 22 rotates along the first rotation direction, the screw-top block 232 abuts against different positions of the first spiral guide surface 231.

[0065] Through the cooperation between the first spiral guide surface 231 and the screw-top block 232, when the base body 21 and the cover body 22 rotate relative to each other, the screw-top block 232 will press the first spiral guide surface 231 along the axial direction, thereby driving the base to extend along the axial direction and adjusting the tightening force between the base body 21 and the wall.

[0066] The following description of the present invention mainly takes “the first spiral guide surface 231 is provided on the base body 21 , and the screw top block 232 is provided on the cover body 22 ” as an example, but this does not limit the scope of protection of the present invention.

[0067] Optionally, the spiral slope of the first spiral guide surface 231 is set to be greater than or equal to 1.5° and less than or equal to 12°. For example, the spiral slope can be set to 1.5°, 1.7°, 2°, 5°, 8°, 10°, or 12°, etc., so that the low-level surface and the high-level surface 2311 of the first spiral guide surface 231 have an axial drop of a predetermined size. When the top screw block 232 abuts against the high-level surface 2311 of the first spiral guide surface 231, a suitable tightening force can be achieved between the base 21 and the wall, thereby increasing the friction between the base 21 and the wall. In addition, the appropriate spiral slope in the present invention can facilitate the sliding of the top screw block 232 along the first spiral guide surface 231, avoiding the difficulty of the top screw block 232 sliding along the first spiral guide surface 231 due to an excessive spiral slope, thereby facilitating the use of the adjustable base 20.

[0068] Further, combined with Figures 4 to 6 The first spiral guide surfaces 231 include at least two distributed around the axis of the cover body, and the top screw blocks 232 include at least two corresponding to the at least two first spiral guide surfaces 231, so that the multiple top screw blocks 232 can be used to support the multiple first spiral guide surfaces 231, so that the force on the seat body 21 in the radial direction is relatively uniform, avoiding excessive force on the local area of the seat body 21 causing the seat body 21 to deviate from the axis of the cover body 22, and also making the force of the seat body 21 on the wall balanced, thereby improving the stability of the cooperation between the adjustable seat body 21 and the wall.

[0069] In addition, if Figure 5 A stopper 2313 is provided between adjacent first spiral guide surfaces 231. The stopper 2313 protrudes from the first spiral guide surface 231 and is configured to prevent the screw-top block 232 from sliding along the first spiral guide surface 231. The stopper 2313 can be used to limit the displacement of the screw-top block 232 along the first spiral guide surface 231, preventing the screw-top block 232 from sliding from the high-level surface 2311 of one first spiral guide surface 231 to the low-level surface of another spiral guide surface, thereby preventing the screw-top block 232 from sliding from the high-level surface 2311 of one first spiral guide surface 231 to the low-level surface of another spiral guide surface, thereby preventing the screw-top function of the cover 22 on the base 21 from being lost. This ensures the stability and support capacity of the adjustable base 20.

[0070] Alternatively, as Figure 7 and Figure 8 The first spiral guide surface 231 comprises a high surface 2311, a mid-surface 2310, and a low surface 2312, arranged along the axis. The high surface 2311 is recessed relative to the mid-surface, and a positioning step 2314 is formed between the high and mid-surfaces. A height difference exists between the high surface 2311 and the mid-surface 2310 along the axis of the cover 22. The mid-surface 2310 is configured as a spiral surface connecting the high surface 2311 and the low surface 2312. When the top screw block 232 abuts against the high surface, the positioning step 2314 provides a stop for the top screw block 232, thereby maintaining its position against the high surface 2311.

[0071] Among them, the high surface 2311 can be set to have an angle with the middle surface 2310 of the first spiral guide surface 231, and the high surface 2311 can be set to be perpendicular to the axis. In this way, when the rotating top block 232 slides to the high surface 2311, the rotating top block 232 can stably abut against the high surface 2311, effectively improving the rotating top effect of the cover body 22 on the seat body 21, and improving the stability of the adjustable base 20.

[0072] Some examples, such as Figure 5The base 21 includes a first surrounding wall 212, which surrounds the axis and extends a certain height from the first bottom wall 211 of the base 21 toward the cover 22. A first spiral guide surface 231 is provided on the end surface of the first surrounding wall 212. In conjunction with the foregoing, a screw-on block 232 can be provided on the cover 22, axially opposed to the first spiral guide surface 231. The first surrounding wall 212 can cooperate with the cover 22, and the cooperation between the first spiral guide surface 231 and the screw-on block 232 enhances the tightening force between the base 21 and the wall.

[0073] Alternatively, as Figure 2 、 Figure 3 and Figure 5 The base 21 also includes a second surrounding wall 213. The second surrounding wall 213 surrounds the first surrounding wall 212 and extends a certain height from the first bottom wall 211 of the base 21 toward the cover 22. The height of the second surrounding wall 213 is higher than that of the first surrounding wall 212. Providing the second surrounding wall 213 outside the first surrounding wall 212 further improves the stability of the fit between the cover 22 and the base 21. Even if the fit between the screw-top block 232 and the first spiral guide surface 231 is unbalanced, the fit between the second surrounding wall 213 and the cover 22 can be maintained by the fit between the cover 22 and the base 21. Furthermore, the cover 22 includes a second bottom wall 222 and a third surrounding wall 223 connected to the periphery of the second bottom wall 222. At least a portion of the second surrounding wall 213 is nested within the third surrounding wall 223, facilitating a stable fit between the cover 22 and the base 21 and preventing the base 21 from shaking relative to the cover 22. In addition, the screw-top block 232 may be disposed on the second bottom wall 222 .

[0074] Among them, Figure 2 and Figure 3 The second surrounding wall 213 and the first surrounding wall 212 are spaced apart along the radial direction of the base body 21. This can reduce the thickness of the base body 21, preventing the local thickness of the base body 21 from being too large, which would affect processing and production. In addition, it can also reduce consumables and reduce the production cost of the adjustable base 20. For example, the base body 21 in the present invention can be integrally injection molded. In this case, the spaced apart distribution of the first surrounding wall 212 and the second surrounding wall 213 can avoid problems such as stress concentration caused by the excessive wall thickness of the base body 21 during the injection molding process, thereby improving the yield rate of the injection molding. Of course, the base body 21 in the present invention can also be a metal part, plastic part, or rubber part formed by other processes (such as casting, etc.).

[0075] Furthermore, if Figure 2 and Figure 3The second surrounding wall 213 is provided with a flange portion 214, which is arranged opposite to the third surrounding wall 223 along the axis. The flange portion 214 can limit the relative position of the second surrounding wall 213 and the third surrounding wall 223, so that at least a portion of the base 21 is located outside the cover 22. In this way, when the adjustable base 20 is pressed against a wall, the base 21 can be used to contact the wall instead of the cover 22, making it easier to adjust the pressing force between the base 21 and the wall by rotating the cover 22.

[0076] Optionally, in a specific example, a plurality of first spiral guide surfaces 231 are provided on the seat body 21, and the plurality of first spiral guide surfaces 231 are arranged in an array on the base (there can be more than 2); a plurality of screw-top blocks 232 are provided on the lower bottom surface of the cover body 22, and the screw-top blocks 232 cooperate with the first spiral guide surfaces 231. When the cover body 22 is rotated, the screw-top blocks 232 move from the lower surface of the first spiral guide surface 231 to the higher surface 2311, and one end of the rod body 10 is set in the first socket 221 of the cover body 22.

[0077] Implementation Method 2

[0078] like Figure 9 and Figure 10 The cover 22 is threadedly coupled to the base 21. During use, the cover 22 is rotated to drive the cover 22 and the base 21 to rotate relative to each other and generate relative displacement, thereby increasing the tightening force between the base 21 and the wall.

[0079] In other words, the screw-on structure includes a first threaded portion 233 and a second threaded portion 234 , which are threadably matched with each other. The first threaded portion 233 is disposed on the base 21 , and the second threaded portion 234 is disposed on the cover 22 .

[0080] Optionally, the base 21 includes a second surrounding wall 213, which surrounds the axis. The first threaded portion 233 is provided on the outer circumference of the second surrounding wall 213. The cover 22 includes a third surrounding wall 223, which is sleeved on the outer side of the second surrounding wall 213. The second threaded portion 234 is provided on the inner circumference of the third surrounding wall 223. The first threaded portion 233 and the second threaded portion 234 can cooperate to form a screw structure between the cover 22 and the base 21, so that the base 21 can be tightened against the wall by rotating the cover 22. The spiral slope of the first threaded portion 233 and the second threaded portion 234 can be set to be greater than or equal to 1.2° and less than or equal to 12°.

[0081] In addition, the adjustable base 20 in the present invention may also be provided with other structural features.

[0082] like Figure 1 and Figure 6In some embodiments, the cover 22 is provided with a first insertion hole 221 for connecting the rod body 10 of the support rod 100. The first insertion hole 221 can be used to install the rod body 10 of the support rod 100, so as to achieve a stable and rapid connection between the rod body 10 and the adjustable base 20, effectively improving the stability and safety of the adjustable base 20. Among them, a fixing sleeve 111 can be provided at the end of the cover 22, and the fixing sleeve 111 can block the sharp end of the rod body 10 to improve the safety of the support rod 100. In addition, a protrusion 2413 can be provided on the circumference of the first insertion hole 221. The protrusion 2413 cooperates with the fixing sleeve 111 to achieve locking of the rod body 10 and the cover 22, thereby improving the structural strength of the connection between the rod body 10 and the cover 22.

[0083] In addition, combining 10 to Figure 14 In the present invention, at least a portion of the seat body 21 is sleeved in the cover body 22. Thus, a stable fit between the seat body 21 and the cover body 22 can be achieved, and the cover body 22 can limit the swing of the seat body 21 and improve the stability of the adjustable base.

[0084] like Figure 2 and Figure 3 In some embodiments, the base 21 is provided with a positioning portion 25, which is located at the end of the base 21 facing away from the cover 22. The positioning portion 25 can be used to support the wall to increase the friction coefficient between the base 21 and the wall. Thus, under the same tightening force, the friction between the base 21 and the wall is increased, thereby improving the load-bearing capacity of the adjustable base 20.

[0085] Optionally, the positioning portion 25 is pluggably connected to the base 21, thereby facilitating connection between the positioning portion 25 and the base 21, simplifying the assembly structure, and improving assembly efficiency. Optionally, a slot 2101 is provided on the side of the base 21 facing away from the cover 22. The positioning portion 25 includes a plugging portion 251 that can be plugged and positioned in the slot 2101. Optionally, the slot 2101 can be provided on the second surrounding wall. Furthermore, the positioning portion 25 can be configured as a flexible portion; and / or as a gasket or suction cup. This can further enhance the friction coefficient between the base 21 and the wall, and can also reduce the risk of damage to the wall caused by the base 21 exerting low pressure on the wall.

[0086] Optionally, in conjunction with the above, an axial locking structure is provided between the cover 22 and the base. The axial locking structure locks the axial position between the two, thereby preventing the base 21 and the cover 22 from separating. The axial locking structure is also similar to the screw-top structure, maintaining the stability of the displacement distance. The axial locking structure in an embodiment of the utility model is described below with reference to the accompanying drawings.

[0087] like Figures 11 to 15In some embodiments, the axial locking structure includes: a first locking portion 241 and a second locking portion 242. The second locking portion 242 is disposed through the first locking portion 241 and axially restricts the cover 22 from separating from the base 21. The first locking portion 241 is disposed on one of the cover 22 and the base 21, and the second locking portion 242 is disposed on the other of the cover 22 and the base 21, including but not limited to: the first locking portion 241 is disposed on the cover 22 and the second locking portion 242 is disposed on the base 21. Thus, the axial locking structure can lock the cover 22 and the base 21, preventing the base 21 from falling off the cover 22, thereby improving the stability and safety of the adjustable base 20.

[0088] In combination with the above, during use, in order to adapt to the relative movement between the base body 21 and the cover body 22 along the axial direction, the present invention also provides a spiral guide surface structure on the axial locking structure.

[0089] Specifically, the first locking portion 241 is provided with a first surface 2411, and the second locking portion 242 is provided with a second surface 2421. The first surface 2411 and the second surface 2421 abut against each other along the axial direction, wherein at least one of the first surface 2411 and the second surface 2421 is configured as a second spiral guide surface that extends spirally around the axis of the cover body 22. For example, the first surface 2411 is configured as the second spiral guide surface; and / or the second surface is configured as the second spiral guide surface, wherein the second spiral guide surface has the same rotation direction as the screw-top structure, specifically, the second spiral guide surface has the same rotation direction as the aforementioned first spiral guide surface 231; or the second spiral guide surface has the same rotation direction as the aforementioned first threaded portion 233 and second threaded portion 234. When the cover body 22 is rotated to drive the seat body 21 to extend, the relative movement of the first locking part 241 and the second locking part 242 will also be driven. The first surface 2411 and the second surface 2421 can facilitate the first locking part 241 and the second locking part 242 to stop, so as to ensure the stable fit between the first locking part 241 and the second locking part 242, thereby promoting the stable fit between the seat body 21 and the cover body 22 and preventing the seat body 21 from loosening relative to the cover body 22.

[0090] Optionally, in some examples, the first locking portion 241 includes a mounting hole 225 and a first rib 2412, and the second locking portion 242 includes a plurality of spring latches 2423 with second ribs 2422 at their ends. The spring latches 2423 are disposed through the mounting hole 225, and the second ribs 2422 extend beyond the first rib 2412 and are axially opposed to the first rib 2412. The first surface 2411 is disposed on the first rib 2412, and the second surface 2421 is disposed on the second rib 2422. The cooperation between the first rib 2412 and the second rib 2422 locks the relative position of the base 21 and the cover 22, preventing the base 21 from being separated from the cover 22 and improving the stability of the adjustable base 20. Furthermore, when compressed, the spring latches 2423 can pass through the mounting hole 225, and after the spring latches 2423 are reset, the second rib 2422 is axially restrained by the first rib 2412. This makes it easier to assemble the base body 21 and the cover body 22 .

[0091] Optionally, the mounting hole 225 is provided on the second bottom wall 222 of the cover body 22, and the first rib 2412 is provided on the inner circumference of the mounting hole 225 or the periphery of the mounting hole 225 is configured to form the first rib 2412; or, the first locking portion also includes a limiting sleeve, the mounting hole 225 is provided in the limiting sleeve, and the first rib 2412 is provided on the inner circumference of the limiting sleeve or the end of the limiting sleeve along the axial direction is configured to form the first rib 2412.

[0092] The following embodiments are included but not limited to.

[0093] In Example 1, the mounting hole 225 is provided on the second bottom wall 222 of the cover 22, and the first ribs 2412 are provided on the inner circumference of the mounting hole 225. The first locking portion includes the mounting hole 225 provided on the second bottom wall 222 of the cover 22, and a plurality of first ribs 2412 (not shown) are directly provided around the inner wall of the mounting hole 225.

[0094] In Example 2, the mounting hole 225 is provided on the second bottom wall of the cover 22, and the periphery of the mounting hole 225 is configured as a first rib. A plurality of first ribs 2412 (not shown) are provided around the edge of the mounting hole.

[0095] In Example 3, the first locking portion further includes a retaining sleeve, a mounting hole 225 disposed within the retaining sleeve, and first ribs 2412 disposed on the inner circumference of the retaining sleeve. The first locking portion 241 includes a retaining sleeve having a hollow structure with a mounting hole 225 extending through the bottom. Several first ribs 2412 are disposed around the hollow inner wall of the retaining sleeve.

[0096] Example 4: The first locking portion further includes a limiting sleeve, the mounting hole 225 is provided in the limiting sleeve, and a first rib is constructed at the end portion of the limiting sleeve along the axial direction.

[0097] Optionally, the first locking portion 241 is provided at the center of the cover 22, and the second locking portion 242 is provided at the center of the base 21. This can further improve the stability of the fit between the base 21 and the cover 22.

[0098] Furthermore, the base 21 includes a first surrounding wall 212, which surrounds the second locking portion 242. A receiving slot is formed between the second locking portion 242 and the first surrounding wall 212. The cover 22 includes a fourth surrounding wall 224, which is rotatably disposed within the receiving slot. The cooperation between the first surrounding wall 212 and the second locking portion 242 provides mounting space for the fourth surrounding wall 224, thereby improving the stability of the relative movement between the base 21 and the cover 22.

[0099] like Figure 16 and Figure 17 The present invention further provides a support rod 100, comprising a rod body 10, a first base 20a, and a second base 20b. The first base 20a is connected to one end of the rod body 10; the second base 20b is connected to the other end of the rod body 10. At least one of the first base 20a and the second base 20b is configured as the aforementioned adjustable base 20, and a cover 22 of the adjustable base 20 is connected to the end of the rod body 10. By providing the aforementioned adjustable base 20, the corresponding functions of the aforementioned adjustable base 20 can be obtained, which will not be further described in detail in the present invention.

[0100] At least one of the first base 20a and the second base 20b is set as the aforementioned adjustable base 20, which may include but is not limited to: the first base 20a is set as the aforementioned adjustable base 20, and the second base 20b can be set as an ordinary base, that is, a base whose axial size cannot be adjusted by rotation; or, the first base 20a is set as the aforementioned ordinary base, and the second base 20b can be set as the adjustable base 20; or, the first base 20a is set as the aforementioned adjustable base 20, and the second base 20b can be set as the adjustable base 20.

[0101] like Figure 16 and Figure 17 In some embodiments, the rod body 10 includes an inner rod 11 and an outer rod 12. One end of the inner rod 11 is inserted into the outer rod 12 and is equipped with an internal locking mechanism. The internal locking mechanism is used to lock the inner rod 11 and the outer rod 12 after the inner rod 11 is extended to a predetermined length relative to the outer rod 12. This allows for easy extension of the rod body 10, achieving coarse adjustment of its length, while fine adjustment can be performed using the adjustable base 20 to enhance the grip and friction with the wall. Optionally, the first base is connected to the inner rod 11, and the second base is connected to the outer rod 12.

[0102] Furthermore, the inner locking mechanism is configured to lock the inner rod 11 and the outer rod 12 when the inner rod 11 rotates in a first direction, and the screw-on mechanism is configured to eject the base body 21 when the cover body 22 rotates in a second direction, wherein the first direction and the second direction are opposite circumferential directions. Thus, after the lengths of the inner rod 11 and the outer rod 12 are preliminarily determined, the inner rod 11 can be driven to rotate in the first direction to lock the inner rod 11 and the outer rod 12. During the locking process, the rotation of the inner rod 11 in the first direction will drive the cover body 22 to rotate in the first direction, and the rotation of the cover body 22 in the first direction will release the ejection action on the base body 21, causing the cover body 22 to reset relative to the base body 21, for example, by rotating the screw-on block 232 to the lower surface of the first spiral guide surface 231.

[0103] It should be noted that the rotating top structure is configured to eject the base body 21 when the cover body 22 rotates around the second direction, which means that when the cover body 22 rotates around the second direction, it can drive the base body 21 to be ejected relative to the cover body 22, including but not limited to: the base body 21 moves along the axis in the direction of pressing against the wall; or, the cover body 22 moves along the axis in the direction away from the wall.

[0104] The following describes a support rod according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0105] Combine Figures 1 to 22 The support rod of the present invention mainly includes: a rod body 10, the rod body 10 includes an inner rod 11 and an outer rod 12, one end of the inner rod 11 is sleeved in the outer rod 12, and an internal locking mechanism is provided, which can lock the inner rod 11 relative to the outer rod 12.

[0106] The rod body 10 is provided with bases at both ends. Preferably, the first base 20a provided at one end of the inner rod 11 is an adjustable base, and the second base provided at the other end is a conventional base or an adjustable base. The adjustable base 20 may be provided with a first socket 221, and the conventional base may be provided with a second socket. The rod body 10 is connected to the adjustable base 20 via the first socket 221 and to the conventional base via the second socket to form a complete support rod 100 product, which is installed between two walls.

[0107] The adjustable base 20 includes a positioning portion 25 (gasket or suction cup), a base body 21, and a cover body 22; the positioning portion 25 is fixedly arranged at the end of the base body 21, and the connection and fixation are achieved by a plug-in structure; a screw-top structure is provided between the base body 21 and the cover body 22, and the cover body 22 can rotate relative to the base body 21. When the cover body 22 rotates relative to the base body 21 under the action of external force, the base body 21 can be displaced in the axial direction relative to the cover body 22 under the action of the screw-top structure.

[0108] The base 21 includes a first surrounding wall 212 and a second surrounding wall 213. The first and second surrounding walls 212 and 213 extend upward from the bottom of the base 21 to a certain height. In this embodiment, the first surrounding wall 212 extends upward to a lower height than the second surrounding wall 213. The second surrounding wall 213 is assembled with the inner wall of the cover 22. The cover 22 can rotate around or relative to the first surrounding wall 212 under external force. The cover 22 is also provided with a third surrounding wall 223 and a fourth surrounding wall 224. The third surrounding wall 223 is disposed around the outer circumference of the second surrounding wall 213, and the fourth surrounding wall 224 is disposed around the inner circumference of the first surrounding wall 212.

[0109] Specifically, the screw-on structure includes a first spiral guide surface 231 arranged on the top of the first surrounding wall 212, and a screw-on block 232 arranged on the first bottom wall 211 of the cover body 22. The screw-on block 232 can be integrally formed with the inner wall of the cover body 22 or assembled and disassembled. The screw-on block 232 and the spiral guide surface cooperate to form the screw-on structure.

[0110] There are preferably multiple first spiral guide surfaces 231 (e.g., at least two or more to achieve smooth rotation, preferably three in this embodiment), and they are arranged in an array at the top of the first surrounding wall 212. The first spiral guide surface 231 has a low surface and a high surface 2311. The high surface 2311 is provided with a positioning step 2314. Stops 2313 are provided between adjacent first spiral guide surfaces 231 (to limit the rotational travel of the outer cover). The number of screw-top blocks 232 provided corresponds to the number of first spiral guide surfaces 231. After the cover body 22 and the base body 21 are assembled, the initial position of the screw-top blocks 232 is theoretically located at the low surface of the first spiral guide surface 231.

[0111] If the screw-top block 232 is not at the lowest position of the first spiral guide surface 231, when the inner rod 11 is rotated to lock it relative to the outer rod 12, the rotation of the inner rod 11 will also drive the cover 22 to rotate and return to the lowest position (there is friction between the connecting end of the inner rod 11 and the cover socket, so the rotation of the inner rod 11 will also drive the cover to rotate);

[0112] When the cover body 22 is rotated under the action of external force, the rotation of the cover body 22 will cause the screw-on block 232 to slide from the low surface of the first spiral guide surface 231 to the high surface 2311, and an axial displacement will occur between the cover body 22 and the base body 21, thereby extending the length of the entire support rod 100 (that is, through the screw-on structure, the rotational motion of the cover body 22 is converted into linear / telescopic motion), so that the base of the support rod 100 has a greater tightening force applied to the wall (one end of the rod body 10 is connected to the base. When the relative lengths of the inner rod and the outer rod are fixed, further extension and contraction of the adjustable base will increase the overall length of the support rod 100. Furthermore, when the distance between the two walls is relatively fixed, the fine-tuning of the overall length of the support rod 100 will increase the tightening force applied to the wall, thereby ensuring that the support rod 100 is firmly supported between the two walls to prevent it from falling).

[0113] Furthermore, the angle between the low surface of the first spiral guide surface 231 and the high surface 2311 is preferably 1.5-12 degrees, and the distance L between the seat body 21 and the cover body 22 under the action of the screw-top structure is relatively small, which mainly plays the role of fine-tuning to increase the tightening force; the gasket / suction cup is preferably made of flexible material, so that it has elastic compression space under the action of the screw-top structure.

[0114] Preferably, an axial locking structure is further provided between the cover body 22 and the seat body 21, the axial locking structure comprising a concave column arranged at the center of the cover body 22 (i.e. the aforementioned first locking portion 241, the concave column extends toward the seat body 21, i.e. sinks downward) and an undercut (i.e. the aforementioned second locking portion 242) arranged at the center of the first surrounding wall 212, a receiving groove is formed between the undercut and the first surrounding wall 212, the concave column extends downward toward the seat body 21 and is received in the receiving groove; further, a limit sleeve is provided at the center of the concave column, the center of the limit sleeve is a hollow inner wall, and the bottom is a through-type inner wall. The mounting hole is arranged in a circle, and a plurality of first ribs 2412 are arranged around the hollow inner wall of the limiting sleeve, and the first rib 2412 is provided with a first surface 2411; the undercut extends upward from the bottom of the seat body 21 through the mounting hole, and the undercut is provided with a spring buckle 2423, and the maximum outer diameter of the spring buckle 2423 is larger than the diameter of the mounting hole 225. When the spring buckle 2423 is compressed, it can pass through the mounting hole. When the spring buckle 2423 is reset, the spring buckle 2423 is axially restricted by the first rib 2412, and the bottom of the spring buckle 2423 is a second surface 2421 that cooperates with the first surface 2411 of the first rib 2412.

[0115] The axial locking structure can not only lock the cover body 22 and the seat body 21 in the axial direction, but also realize radial limitation. At the same time, because the axial locking structure is also a screw-top structure, it can ensure that the distance of the left and right rotational displacement of the cover body 22 and the seat body 21 is kept at the same distance, thereby maintaining stability. If there is no such structure, there will be shaking / rocking between the seat body 21 and the cover body 22 after the spiral displacement, and the tightening force will not be strong, affecting the user experience. Assuming that the spiral guide rib position of the axial locking structure is not the second spiral guide surface structure, then when the screw-top block 232 on the cover body 22 rotates to the highest surface 2311 of the first spiral guide surface 231, the axial locking structure will become relaxed, and the axial locking effect will be greatly reduced.

[0116] The cover 22 is locked on the base 21 by an axial locking structure, but only produces a limiting effect in the axial direction, and the cover 22 can still rotate relative to the base 21.

[0117] like Figure 18 The internal locking mechanism 30 of the present invention may include: a screw assembly 31, a wedge-shaped pressing block 32, and a locking assembly 33. The screw assembly 31 includes a screw portion 311, and the wedge-shaped pressing block 32 is connected to the screw assembly 31. The locking assembly 33 includes a threaded sleeve 331 and a locking sleeve 332. The locking sleeve 332 is connected to the threaded sleeve 331. At least a portion of the locking sleeve 332 is sleeved around the outer circumference of the wedge-shaped pressing block 32. The threaded sleeve 331 is threadedly engaged with the screw portion 311, and is used to convert the rotation of the screw portion 311 relative to the threaded sleeve 331 into the axial movement of the screw portion 311 relative to the threaded sleeve 331 along the internal locking mechanism 30, thereby driving the wedge-shaped pressing block 32 to drive the locking sleeve 332 to deform radially along the internal locking mechanism 30.

[0118] In the initial state, the inner rod 11 and the outer rod 12 are not locked, and the inner rod 11 and the outer rod 12 can move relative to each other. After the relative positions of the inner rod 11 and the outer rod 12 are basically determined, the inner rod 11 is rotated, and the rotation of the inner rod 11 will drive the screw portion to rotate; the friction between the locking assembly and the outer rod 12 will limit the locking assembly from rotating with the screw portion, and the relative rotation of the screw portion and the threaded sleeve will be converted into axial movement of the screw assembly along the inner locking mechanism; the axial movement of the screw assembly will drive the wedge-shaped forced block to move axially, and the axial movement of the wedge-shaped forced block will drive the locking sleeve to deform radially; when the locking sleeve deforms radially outward, the friction between the locking sleeve and the outer rod 12 increases, thereby locking the locking sleeve and the outer cylinder, and then locking the inner rod 11 and the outer rod 12.

[0119] The following describes the steps (working principle) of using the support rod 100 in the present invention with reference to the accompanying drawings:

[0120] Step 1: If Figure 19, the second base 20b of the support rod 100 is against the second wall 200b (the base at one end of the outer rod 12);

[0121] Step 2: If Figure 20 The user holds the outer rod 12 with one hand and pulls the inner rod 11 out with the other hand, so that the end surface of the first base 20a (the base at one end of the inner rod 11) initially abuts against the first wall 200a. The inner rod 11 is rotated in the first direction. Under the action of the inner locking mechanism, the inner rod 11 is locked and positioned relative to the outer rod 12. At the same time, driven by the rotation of the inner rod 11, the cover body 22 is restored to its original position, that is, the screw-top block 232 rotates to the lower surface of the first spiral guide surface 231.

[0122] Step 3: If Figure 21 and Figure 22 After the inner rod 11 is locked and positioned relative to the outer rod 12; the cover body 22 is rotated in the second direction (that is, opposite to the rotation direction of the inner rod 11, at this time the user needs to hold the inner rod with one hand so that the inner rod will not be rotated by the cover body), and the screw-top block 232 on the cover body 22 rotates from the low surface of the first spiral guide surface 231 to the high surface 2311, thereby causing a relative displacement between the base body 21 and the cover body 22 (the overall length of the support rod 100 becomes longer), and further pressing the gasket, so that the supporting force of the support rod 100 between the wall is greatly enhanced.

[0123] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0124] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0125] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0126] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0127] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0128] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An adjustable base for a support rod, characterized in that: include: seat body; a cover body, the cover body being rotatably connected to the base body, a screw-top structure being provided between the cover body and the base body, the screw-top structure being configured to convert the rotation of the cover body into relative movement of the base body and the cover body along the axial direction of the cover body; An axial locking structure connects the cover body and the seat body, and is used to limit the seat body and the cover body from separating along the axial direction.

2. The adjustable base according to claim 1, wherein: The screw-top structure includes a first spiral guide surface and a screw-top block, one of the first spiral guide surface and the screw-top block is provided on the cover body, and the other is provided on the base body, the first spiral guide surface is provided to extend spirally around the axis of the cover body, and the screw-top block abuts against the first spiral guide surface along the axial direction.

3. The adjustable base according to claim 2, characterized in that: The spiral slope of the first spiral guide surface is set to be greater than or equal to 1.5° and less than or equal to 12°.

4. The adjustable base according to claim 2, wherein: The first spiral guide surfaces include at least two surfaces distributed around the axis of the cover body, and the top screw block includes at least two surfaces corresponding to the at least two first spiral guide surfaces.

5. The adjustable base according to claim 4, characterized in that: A stopper is provided between adjacent first spiral guide surfaces. The stopper protrudes from the first spiral guide surface and is configured to stop the top screw block from sliding along the first spiral guide surface.

6. The adjustable base according to claim 2, wherein: The first spiral guide surface has a high surface, a middle surface and a low surface distributed along the direction around the axis of the cover body. The high surface is recessed relative to the middle surface, and a positioning step is constructed between the high surface and the middle surface.

7. The adjustable base according to claim 2, wherein: The base body includes a first surrounding wall, which surrounds the axis of the cover body and is configured to extend a certain height from the first bottom wall of the base body toward the cover body. The first spiral guide surface is provided on the end surface of the first surrounding wall.

8. The adjustable base according to claim 7, wherein: The base body further includes a second surrounding wall, which surrounds the first surrounding wall and is configured to extend a certain height from the first bottom wall of the base body toward the cover body. The height of the second surrounding wall is higher than that of the first surrounding wall.

9. The adjustable base according to claim 8, characterized in that: The first surrounding wall and the second surrounding wall are spaced apart and distributed along the radial direction of the base body; And / or, the cover body includes a second bottom wall and a third surrounding wall connected to the periphery of the second bottom wall, and at least a portion of the second surrounding wall is sleeved within the third surrounding wall; And / or, the second surrounding wall is provided with a flange portion, and the flange portion is arranged opposite to the third surrounding wall along the axial direction.

10. The adjustable base according to claim 1, wherein: The screw-on structure includes a first threaded portion and a second threaded portion, the first threaded portion and the second threaded portion are threadedly matched, the first threaded portion is provided on the base, and the second threaded portion is provided on the cover.

11. The adjustable base according to claim 10, wherein: The seat body includes a second surrounding wall, the second surrounding wall surrounds the axis of the cover body, and the first threaded portion is provided on the outer circumference of the second surrounding wall. The cover body includes a third surrounding wall, the third surrounding wall is sleeved on the outside of the second surrounding wall, and the second threaded portion is provided on the inner circumference of the third surrounding wall.

12. The adjustable base according to claim 1, wherein: The cover body is provided with a first insertion hole for connecting the rod body of the support rod; And / or, at least a portion of the base body is sleeved inside the cover body.

13. The adjustable base according to claim 1, wherein: The base body is provided with a positioning portion, and the positioning portion is provided at an end portion of the base body away from the cover body.

14. The adjustable base according to claim 13, wherein: The positioning portion is plug-connected to the base; and / or, the positioning portion is configured as a flexible portion; and / or, the positioning portion is configured as a gasket or a suction cup.

15. The adjustable base according to claim 1, wherein: The axial locking structure comprises: a first locking portion connected to one of the cover and the base; A second locking portion is connected to the other of the cover body and the base body, and the second locking portion is passed through the first locking portion and limits the separation of the cover body and the base body along the axial direction.

16. The adjustable base according to claim 15, wherein: The first locking portion is provided with a first surface, and the second locking portion is provided with a second surface, and the first surface and the second surface are in abutment with each other along the axial direction. Wherein, at least one of the first surface and the second surface is configured as a second spiral guide surface that spirally extends around the axis of the cover body.

17. The adjustable base according to claim 16, wherein: The first locking portion includes a mounting hole and a first rib, and the second locking portion includes a plurality of spring hooks with second ribs at their ends. The spring hooks are passed through the mounting hole, and the second rib passes over the first rib and is arranged opposite to the first rib along the axial direction. The first surface is arranged on the first rib, and the second surface is arranged on the second rib.

18. The adjustable base according to claim 17, wherein: The mounting hole is provided on the second bottom wall of the cover body, and the first rib is provided on the inner circumferential surface of the mounting hole or the periphery of the mounting hole to form the first rib; Alternatively, the first locking portion further includes a limiting sleeve, the mounting hole is provided in the limiting sleeve, the first rib is provided on the inner circumferential surface of the limiting sleeve or the first rib is constructed at the end of the limiting sleeve along the axial direction.

19. The adjustable base according to claim 15, wherein: The first locking portion is provided at the center of the cover body, and the second locking portion is provided at the center of the base body; The base body includes a first surrounding wall, which surrounds the second locking portion, and a receiving groove is formed between the second locking portion and the first surrounding wall. The cover body includes a fourth surrounding wall, which is rotatably arranged in the receiving groove.

20. A support rod, characterized in that: include: Rod body; a first base connected to one end of the rod; A second base, the second base is connected to the other end of the rod body, Wherein, at least one of the first base and the second base is configured as an adjustable base according to any one of claims 1 to 19, and a cover of the adjustable base is connected to an end of the rod body.

21. The support rod according to claim 20, characterized in that The rod body includes an inner rod and an outer rod. One end of the inner rod is inserted into the outer rod and is provided with an inner locking mechanism. The inner locking mechanism is used to lock the inner rod and the outer rod after the inner rod extends a predetermined length relative to the outer rod.

22. The support rod according to claim 21, characterized in that The inner locking mechanism is configured to lock the inner rod and the outer rod when the inner rod rotates around a first direction, and the screw-top structure is configured to eject the seat body when the cover body rotates around a second direction, and the first direction and the second direction are opposite circumferential directions.

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