Supporting mechanism

Abstract

The utility model provides a supporting mechanism. The supporting mechanism comprises a supporting piece and a bearing piece. The bearing piece is used for being connected with and bearing a component to be borne, and the supporting piece is used for being connected with and supporting the bearing piece. The bearing piece is provided with a limiting part and a first fixing part; the supporting piece comprises a connecting part and a leg part, and the connecting part is provided with a positioning part and a second fixing part; the first fixing part is matched with the second fixing part, and the limiting part is used for limiting the positioning part, so that the first fixing part corresponds to the second fixing part in position. Therefore, disassembly, assembly and production of a user are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of support, in particular to a support mechanism. Background Art

[0002] A support mechanism is a mechanism used to support other components, and is often provided on items such as chairs and tables.

[0003] In the prior art, the disassembly and assembly process of the support mechanism is cumbersome, which is not conducive to user disassembly and assembly. Chinese invention patent application CN114732242A proposes a seat support structure assembly and a detachable support leg, which solves the above problem, but the technical solution of the patent also has defects. Since the positioning function is realized by the seat leg support member alone, this implementation method leads to a complex structure of the seat leg support member, which is not conducive to production.

[0004] Therefore, there are still problems to be solved in the prior art. Utility Model Content

[0005] The main purpose of the utility model is to provide a supporting mechanism, which is intended to facilitate disassembly, assembly and production for users.

[0006] To achieve the above-mentioned purpose, the support mechanism proposed in the utility model includes a support member and a supporting member; the supporting member is used to connect and support the component to be supported, and the support member is used to connect and support the supporting member; the supporting member is provided with a limiting portion and a first fixing portion; the support member includes a connecting portion and a leg portion, and the connecting portion is provided with a positioning portion and a second fixing portion; the first fixing portion and the second fixing portion are adapted to each other, and the limiting portion is used to limit the positioning portion so that the positions of the first fixing portion and the second fixing portion correspond to each other.

[0007] Preferably, the limiting portion can be configured as at least one of a limiting groove, a limiting hole or a limiting protrusion.

[0008] Preferably, the supporting member comprises a sleeve, and the sleeve is provided with a limiting portion.

[0009] Preferably, the sleeve is further provided with a first fixing portion.

[0010] Preferably, the supporting member includes a first connecting ring, which is arranged in a sleeve and is provided with a first hole structure; at least one of the second fixing part and the first hole structure is arranged as a screw hole; the connecting part, the sleeve and the first connecting ring are screwed and fixed by passing screws through the first fixing part, the second fixing part and the first hole structure.

[0011] Preferably, the first connecting ring is arranged at the upper end of the sleeve; the supporting member includes a second connecting ring, the second connecting ring is located at the lower end of the sleeve, the second connecting ring is provided with a second hole structure, and the positioning portion is provided with a third hole structure; the second hole structure and / or the third hole structure are arranged as screw holes; the positioning portion extends inwardly and is located below the sleeve and the second connecting ring; the positioning portion and the second connecting ring are screwed and fixed by passing screws through the second hole structure and the third hole structure.

[0012] Preferably, the supporting member comprises a first connecting ring, and the first connecting ring is provided with a first fixing portion.

[0013] Preferably, the first connecting ring is arranged at the lower end of the sleeve, and the limiting part is arranged at the lower end of the sleeve; the positioning part is located at the lower end of the connecting part and at the lower end of the first connecting ring, and the positioning part is provided with a second fixing part.

[0014] Preferably, the first connecting ring is arranged at the upper end of the sleeve, a first fixing portion is arranged on the outer side of the first connecting ring, and the connecting portion is located on the outer side of the first connecting ring.

[0015] Preferably, the supporting member includes a second connecting ring, the second connecting ring is located at the lower end of the sleeve, the second connecting ring is provided with a second hole structure, and the positioning portion is provided with a third hole structure; the second hole structure and / or the third hole structure are configured as screw holes; the positioning portion extends inwardly and is located below the sleeve and the second connecting ring; the positioning portion and the second connecting ring are screwed and fixed by passing screws through the second hole structure and the third hole structure.

[0016] Preferably, a convex portion is provided on the outer side or lower side of the first connecting ring, and a concave portion is provided on the sleeve to avoid the convex portion; the convex portion is positioned in the concave portion.

[0017] Preferably, a convex portion is provided on the outer side or upper side of the second connecting ring, and a concave portion is provided on the sleeve to avoid the convex portion; the convex portion is positioned in the concave portion.

[0018] A support mechanism provided in an embodiment of the present application includes a support member and a supporting member; the supporting member is used to connect and support the component to be supported, and the support member is used to connect and support the supporting member; the supporting member is provided with a limiting portion and a first fixing portion; the support member includes a connecting portion and a leg portion, and the connecting portion is provided with a positioning portion and a second fixing portion; the first fixing portion and the second fixing portion are adapted, and the limiting portion is used to limit the positioning portion so that the positions of the first fixing portion and the second fixing portion correspond to each other. In this way, it is intended to facilitate user disassembly and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of an embodiment of the support mechanism of the utility model;

[0021] Figure 2 An exploded view of an embodiment of the support mechanism of the utility model;

[0022] Figure 3 A schematic diagram of a first connecting ring of an embodiment of the support mechanism of the utility model;

[0023] Figure 4 A schematic diagram of a second connecting ring of an embodiment of the support mechanism of the utility model;

[0024] Figure 5 A schematic diagram of a sleeve of an embodiment of the support mechanism of the utility model;

[0025] Figure 6 A schematic diagram of a connecting portion of an embodiment of a supporting mechanism of the utility model;

[0026] Figure 7 Another schematic diagram of a sleeve of an embodiment of the support mechanism of the utility model;

[0027] Figure 8 Another schematic diagram of the first connecting ring of an embodiment of the support mechanism of the utility model;

[0028] Fig. 9 This is another schematic diagram of the first connecting ring or the second connecting ring of an embodiment of the support mechanism of the utility model.

[0029] Description of Figure Numbers:

[0030] Label name Label name 100 Support 230 casing 110 Connection 231 concavity 111 Positioning Department 240 First connecting ring 111a The third hole structure 241 First hole structure 112 Second fixing part 250 Second connecting ring 120 Legs 251 Second hole structure 200 Supporting parts 260 convex part 210 Limiting part 220 First fixing part

[0031] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] A support mechanism is a mechanism used to support other components, and is often provided on items such as chairs and tables.

[0036] In the prior art, the disassembly and assembly process of the support mechanism is cumbersome, which is not conducive to user disassembly and assembly. Chinese invention patent application CN114732242A proposes a seat support structure assembly and a detachable support leg, which solves the above problem, but the technical solution of the patent also has defects. Since the positioning function is realized by the seat leg support member alone, this implementation method leads to a complex structure of the seat leg support member, which is not conducive to production.

[0037] In order to solve the above problems, this patent provides a waterproof sealed socket, which is designed to facilitate user disassembly and production.

[0038] For ease of understanding, the specific implementation of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0039] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7A supporting mechanism comprises a supporting member 100 and a supporting member 200; the supporting member 200 is used to connect and support a component to be supported, and the supporting member 100 is used to connect and support the supporting member 200; the supporting member 200 is provided with a limiting portion 210 and a first fixing portion 220; the supporting member 100 comprises a connecting portion 110 and a leg portion 120, and the connecting portion 110 is provided with a positioning portion 111 and a second fixing portion 112; the first fixing portion 220 and the second fixing portion 112 are adapted, and the limiting portion 210 is used to limit the positioning portion 111 so that the positions of the first fixing portion 220 and the second fixing portion 112 correspond to each other.

[0040] In this embodiment, the components supported by the supporting member 200 are not limited. When the support mechanism is applied to a chair, preferably, the supporting member 200 can support the seat cushion of the chair; when the support mechanism is applied to a table, preferably, the supporting member 200 can support the table top of the table. By respectively providing the limiting portion 210 and the positioning portion 111 on the supporting member 200 and the connecting portion 110 of the supporting member 100, the user can limit the positioning portion 111 by the limiting portion 210 when assembling the supporting mechanism, so that the first fixing portion 220 on the supporting member 200 and the second fixing portion 112 on the connecting portion 110 correspond to each other, so that the user can conveniently complete the positioning operation. In this embodiment, the implementation method of the leg 120 is not limited. Preferably, the leg 120 is provided on a side surface of the connecting portion 110 that is not adjacent to the supporting member 200. Such an implementation method ensures that the leg 120 does not hinder the positioning and assembly of the supporting member 200 and the connecting portion 110 of the supporting member 100 when the supporting mechanism is assembled. In this embodiment, the implementation method of the connection part 110 is not limited. Preferably, the shape of the connection part 110 is adapted to the outer contour of the supporting member 200. Such an implementation method makes the spacing between the connection part 110 and the supporting member 200 smaller, so that the overall size of the support mechanism is smaller, so that the support mechanism can be applied to more objects. In addition, since the positioning function is realized by the limiting part 210 of the supporting member 200 and the positioning part 111 of the connection part 110, compared with the prior art that realizes the positioning function through a single component, the structure of the support mechanism is simpler and easier to produce. As a result, it is easier for users to disassemble and produce.

[0041] It should be noted that there are multiple implementations of the limiting portion 210. The specific implementation that meets the above requirements is not limited in this embodiment, and for ease of understanding, this application provides a preferred implementation.

[0042] See also Figure 5 and Figure 7 The limiting portion 210 can be set to at least one of a limiting groove, a limiting hole or a limiting protrusion.

[0043] In this embodiment, the above implementation method of the limiting portion 210 can enable the limiting portion 210 to limit the positioning portion 111 to achieve a positioning effect. Specifically, when a plurality of limiting portions 210 are provided, the plurality of limiting portions 210 can be circumferentially arranged on the supporting member 200. This implementation method can obtain a better limiting effect and facilitate positioning.

[0044] It should be noted that there are many implementations for setting the limiting portion 210. The specific implementation that meets the above requirements is not limited in this embodiment, and for ease of understanding, this application provides a preferred implementation.

[0045] See also Figure 5 and Figure 7 The supporting member 200 includes a sleeve 230 , and the sleeve 230 is provided with a limiting portion 210 .

[0046] In this embodiment, the sleeve 230 is a component located outside the supporting member 200. The limiting portion 210 is arranged on the sleeve 230 so that the positioning portion 111 on the connecting portion 110 can directly contact the limiting portion 210, thereby realizing that the limiting portion 210 limits the positioning portion 111.

[0047] It should be noted that, based on the technical solution that the supporting member 200 includes the sleeve 230 and the sleeve 230 is provided with the limiting portion 210, there is a further technical problem of how to provide the first fixing portion 220. In order to solve the above problem, the present application provides a preferred implementation.

[0048] See also Figure 7 The sleeve 230 is also provided with a first fixing portion 220 .

[0049] In this embodiment, the sleeve 230 is a component located outside the supporting member 200. The sleeve 230 is set on the first fixing part 220 so that the first fixing part 220 can directly cooperate with the second fixing part 112, thereby realizing the connection and fixation between the sleeve 230 and the connecting part 110.

[0050] It should be noted that, based on the implementation mode that the supporting member 200 includes the sleeve 230, and the sleeve 230 is provided with the first fixing portion 220, further, after the limiting portion 210 limits the positioning portion 111, how to connect and fix the sleeve 230 and the connecting portion 110 to realize the technical problem of assembling the support mechanism. In order to solve the above problem, the present application provides a preferred implementation mode.

[0051] See also Figure 6 , Figure 7 and Figure 8The supporting member 200 includes a first connecting ring 240, which is arranged in the sleeve 230 and is provided with a first hole structure 241; at least one of the second fixing portion 112 and the first hole structure 241 is provided as a screw hole; the connecting portion 110, the sleeve 230 and the first connecting ring 240 are screwed and fixed by screws penetrating the first fixing portion 220, the second fixing portion 112 and the first hole structure 241. It should be noted that the screw hole provided in the present application can be directly opened on the first connecting ring 240 or the second fixing portion 112, or formed by embedding a nut on the first connecting ring 240 or the second fixing portion 112.

[0052] In this embodiment, the connection part 110, the sleeve 230 and the first connection ring 240 can be connected and fixed by screwing the screws through the first fixing part 220, the second fixing part 112 and the first hole structure 241. The first connection ring 240 is arranged inside the sleeve 230, and the first connection ring 240 is arranged with the first hole structure 241, so that the screws are not easy to fall off after passing through the first hole structure 241, thereby increasing the stability of the connection. In addition, the setting of the first connection ring 240 will increase the overall structural strength of the supporting member 200, allowing the weight of the supported component to be greater.

[0053] It should be noted that, based on the technical solution that the supporting member 200 includes the sleeve 230 and the first connecting ring 240, and the first fixing portion 220 is provided on the sleeve 230, there is a further technical problem of how to make the connection between the connecting portion 110 and the supporting member 200 more stable. In order to solve the above problem, the present application provides a preferred implementation.

[0054] See also Figure 6 , Figure 7 , Figure 8 and Fig. 9 The first connecting ring 240 is arranged at the upper end of the sleeve 230; the supporting member 200 includes a second connecting ring 250, the second connecting ring 250 is located at the lower end of the sleeve 230, the second connecting ring 250 is provided with a second hole structure 251, and the positioning portion 111 is provided with a third hole structure 111a; the second hole structure 251 and / or the third hole structure 111a are configured as screw holes; the positioning portion 111 extends inwardly and is located below the sleeve 230 and the second connecting ring 250; the positioning portion 111 and the second connecting ring 250 are screwed and fixed by screws penetrating the second hole structure 251 and the third hole structure 111a.

[0055] In this embodiment, the supporting member 200 includes a second connecting ring 250, and a second hole structure 251 and a third hole structure 111a are provided on the second connecting ring 250 and the positioning portion 111, and screws are inserted into the second hole structure 251 and the third hole structure 111a for screwing and fixing, so that the connection between the connecting portion 110 and the supporting member 200 is more stable. In addition, since the first connecting ring 240 is provided at the upper end of the sleeve 230, and the second connecting ring 250 is provided at the lower end of the sleeve 230, the components provided in the sleeve 230 can be isolated by the first connecting ring 240, the second connecting ring 250 and the sleeve 230, and foreign matter can be effectively prevented from entering the interior.

[0056] It should be noted that, based on the technical solution that the supporting member 200 includes the sleeve 230 and the sleeve 230 is provided with the limiting portion 210, there are other arrangements of the first fixing portion 220. The specific implementation method that meets the above requirements is not limited in this embodiment. For ease of understanding, this application provides a preferred implementation method.

[0057] See also Figure 3 and Fig. 9 The supporting member 200 includes a first connecting ring 240 , and the first connecting ring 240 is provided with a first fixing portion 220 .

[0058] In this embodiment, the first fixing portion 220 is arranged on the first connecting ring 240, and the arrangement method of the first connecting ring 240 is not limited, so that the position of the first fixing portion 220 is more flexible. For example, the first connecting ring 240 can be arranged on the outer side of the sleeve 230 so that the first fixing portion 220 is located outside the sleeve 230, or it can be arranged inside the sleeve 230 so that the first fixing portion 220 is located inside the sleeve 230, or it can be arranged at other positions, etc. During production, it can be selected according to the specific application of the support mechanism.

[0059] It should be noted that based on the technical solution that the first connecting ring 240 is provided with the first fixing portion 220, further, after the limiting portion 210 limits the positioning portion 111, how to connect and fix the sleeve 230 and the connecting portion 110 to realize the technical problem of assembling the support mechanism. In order to solve the above problem, the present application provides two preferred implementation methods.

[0060] Method 1.

[0061] See also Figure 6 , Figure 7 and Fig. 9 The first connecting ring 240 is arranged at the lower end of the sleeve 230 , and the limiting portion 210 is arranged at the lower end of the sleeve 230 ; the positioning portion 111 is located at the lower end of the connecting portion 110 and at the lower end of the first connecting ring 240 , and the positioning portion 111 is provided with a second fixing portion 112 .

[0062] In this embodiment, the limiting portion 210 is arranged at the lower end of the sleeve 230, and the positioning portion 111 is arranged at the lower end of the connecting portion 110. When the limiting portion 210 limits the positioning portion 111, the positioning portion 111 will also be located at the lower end of the sleeve 230. At the same time, the positioning portion 111 is also located at the lower end of the first connecting ring 240. The positioning portion 111 is also provided with a second fixing portion 112. Therefore, when the limiting portion 210 limits the positioning portion 111, the positions of the first fixing portion 220 and the second fixing portion 112 correspond to each other, so that the sleeve 230 and the connecting portion 110 can be connected and fixed by the first fixing portion 220 and the second fixing portion 112.

[0063] Method 2.

[0064] See also Figure 3 , Figure 5 and Figure 6 The first connecting ring 240 is disposed at the upper end of the sleeve 230 , the first fixing portion 220 is disposed outside the first connecting ring 240 , and the connecting portion 110 is located outside the first connecting ring 240 .

[0065] In this embodiment, the first fixing portion 220 is provided outside the first connecting ring 240, and the connecting portion 110 is located outside the first connecting ring 240, so that the sleeve 230 and the connecting portion 110 can be connected and fixed by the first fixing portion 220 on the first connecting ring 240 and the second fixing portion 112 on the connecting portion 110.

[0066] It should be noted that, based on the technical solution that the first fixing portion 220 is arranged outside the first connecting ring 240, the connecting portion 110 is located outside the first connecting ring 240, and the first connecting ring 240 is arranged on the upper end of the sleeve 230, there is a further technical problem of how to make the connection between the sleeve 230 and the connecting portion 110 more stable. In order to solve the above problem, the present application provides a preferred implementation.

[0067] See also Figure 4 , Figure 5 , Figure 6 The supporting member 200 includes a second connecting ring 250, which is located at the lower end of the sleeve 230. The second connecting ring 250 is provided with a second hole structure 251, and the positioning portion 111 is provided with a third hole structure 111a; the second hole structure 251 and / or the third hole structure 111a are configured as screw holes; the positioning portion 111 extends inwardly and is located below the sleeve 230 and the second connecting ring 250; the positioning portion 111 and the second connecting ring 250 are screwed and fixed by screws penetrating the second hole structure 251 and the third hole structure 111a.

[0068] In this embodiment, the supporting member 200 includes a second connecting ring 250, which is located at the lower end of the sleeve 230, and the positioning portion 111 extends inward and is located below the sleeve 230 and the second connecting ring 250. The second connecting ring 250 and the positioning portion 111 are respectively provided with a second hole structure 251 and a third hole structure 111a, so that screws can be inserted into the second hole structure 251 and the third hole structure 111a for screwing and fixing, so that the connection between the sleeve 230 and the connecting portion 110 is more stable. In addition, the sleeve 230, the first connecting ring 240 and the second connecting ring 250 can isolate the components in the sleeve 230 to prevent foreign matter from entering the interior.

[0069] It should be noted that, based on the technical solution that the supporting member 200 includes the sleeve 230 and the first connecting ring 240, there is a further technical problem of how to fix the first connecting ring 240 at a preset position. In order to solve the above, the present application provides a preferred implementation.

[0070] See also Figure 3 A convex portion 260 is provided on the outer side or lower side of the first connecting ring 240 , and a concave portion 231 is provided on the sleeve 230 to avoid the convex portion 260 ; the convex portion 260 is positioned in the concave portion 231 .

[0071] In this embodiment, by providing a protrusion 260 on the outside or lower side of the first connecting ring 240, the sleeve 230 is provided with a recess 231 that avoids the protrusion 260, and the protrusion 260 is positioned in the recess 231, so that the first connecting ring 240 can be fixed in a preset position. In this preset position, the screw can be directly aligned with the screw hole and the corresponding through hole. Therefore, this solution is convenient for direct locking and fixing without the need for repeated position adjustment.

[0072] It should be noted that, based on the technical solution that the supporting member 200 includes the sleeve 230 and the second connecting ring 250, there is a further technical problem of how to fix the second connecting ring 250 at a preset position. In order to solve the above problem, the present application provides a preferred implementation.

[0073] See also Figure 4 A convex portion 260 is provided on the outer side or upper side of the second connecting ring 250 , and a concave portion 231 is provided on the sleeve 230 to avoid the convex portion 260 ; the convex portion 260 is positioned in the concave portion 231 .

[0074] In this embodiment, by setting a protrusion 260 on the outside or upper side of the second connecting ring 250, the sleeve 230 is provided with a recess 231 to avoid the protrusion 260, and the protrusion 260 is positioned in the recess 231, so that the second connecting ring 250 can be fixed at a preset position.

[0075] In summary, a support mechanism provided by an embodiment of the present application includes a support member 100 and a supporting member 200; the supporting member 200 is used to connect and support the component to be supported, and the support member 100 is used to connect and support the supporting member 200; the supporting member 200 is provided with a limiting portion 210 and a first fixing portion 220; the support member 100 includes a connecting portion 110 and a leg portion 120, and the connecting portion 110 is provided with a positioning portion 111 and a second fixing portion 112; the first fixing portion 220 and the second fixing portion 112 are adapted, and the limiting portion 210 is used to limit the positioning portion 111, so that the positions of the first fixing portion 220 and the second fixing portion 112 correspond to each other. In this way, it is intended to facilitate user disassembly and production.

[0076] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A support mechanism, characterized in that: It includes a supporting member and a supporting member; the supporting member is used to connect and support the component to be supported, and the supporting member is used to connect and support the supporting member; The supporting member is provided with a limiting portion and a first fixing portion; the supporting member includes a connecting portion and a leg portion, and the connecting portion is provided with a positioning portion and a second fixing portion; The first fixing portion and the second fixing portion are adapted to each other, and the limiting portion is used to limit the positioning portion so that the positions of the first fixing portion and the second fixing portion correspond to each other.

2. The support mechanism according to claim 1, characterized in that: The limiting portion can be configured as at least one of a limiting groove, a limiting hole or a limiting protrusion.

3. The support mechanism according to claim 1, characterized in that: The supporting member comprises a sleeve, and the sleeve is provided with the limiting portion.

4. The support mechanism according to claim 3, characterized in that: The sleeve is also provided with the first fixing portion.

5. The support mechanism according to claim 4, characterized in that: The supporting member comprises a first connecting ring, the first connecting ring is arranged in the sleeve, and the first connecting ring is provided with a first hole structure; At least one of the second fixing portion and the first hole structure is configured as a screw hole; the connecting portion, the sleeve and the first connecting ring are screwed and fixed by penetrating screws into the first fixing portion, the second fixing portion and the first hole structure.

6. The support mechanism according to claim 5, characterized in that: The first connecting ring is arranged at the upper end of the sleeve; The supporting member comprises a second connecting ring, the second connecting ring is located at the lower end of the sleeve, the second connecting ring is provided with a second hole structure, and the positioning portion is provided with a third hole structure; The second hole structure and / or the third hole structure is configured as a screw hole; The positioning portion extends inwardly and is located below the sleeve and the second connecting ring; the positioning portion and the second connecting ring are screwed and fixed by passing screws through the second hole structure and the third hole structure.

7. The support mechanism according to claim 3, characterized in that: The supporting member includes a first connecting ring, and the first connecting ring is provided with the first fixing portion.

8. The support mechanism according to claim 7, characterized in that: The first connecting ring is arranged at the lower end of the sleeve, and the limiting part is arranged at the lower end of the sleeve; the positioning part is located at the lower end of the connecting part and at the lower end of the first connecting ring, and the positioning part is provided with the second fixing part.

9. The support mechanism according to claim 7, characterized in that: The first connecting ring is arranged at the upper end of the sleeve, the first fixing portion is arranged on the outer side of the first connecting ring, and the connecting portion is located on the outer side of the first connecting ring.

10. The support mechanism according to claim 9, characterized in that: The supporting member comprises a second connecting ring, the second connecting ring is located at the lower end of the sleeve, the second connecting ring is provided with a second hole structure, and the positioning portion is provided with a third hole structure; The second hole structure and / or the third hole structure is configured as a screw hole; The positioning portion extends inwardly and is located below the sleeve and the second connecting ring; the positioning portion and the second connecting ring are screwed and fixed by passing screws through the second hole structure and the third hole structure.

11. The support mechanism according to any one of claims 5 to 10, characterized in that: A convex portion is provided on the outer side or the lower side of the first connecting ring, and a concave portion is provided on the sleeve to avoid the convex portion; the convex portion is positioned on the concave portion.

12. The support mechanism according to claim 6 or 10, characterized in that: A convex portion is provided on the outer side or upper side of the second connecting ring, and a concave portion is provided on the sleeve to avoid the convex portion; the convex portion is positioned on the concave portion.

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