Seat foot stool mechanism and seat

Abstract

A clamping and holding assembly comprises an elastic clamping and holding piece and a friction piece, the friction piece is inserted into an installation groove of the elastic clamping and holding piece in the hole axis direction of a stand column clamping and holding hole so that the friction piece can be installed on the hole wall of the stand column clamping and holding hole, and the friction piece and the elastic clamping and holding piece are fixed in a clamped mode. Compared with the prior art, the seat foot stool mechanism does not need to be fixed through an outer ring piece, the number of parts is reduced, so that the structure of the seat foot stool mechanism is simpler, assembling and fixing of the friction piece and the elastic clamping piece can be completed through inserting, matching and clamping, the assembling process of the clamping assembly is simplified, and therefore the production cost of the seat foot stool mechanism is reduced.

Description

Technical Field

[0001] This utility model relates to seats, and more particularly to a seat leg mechanism and a seat. Background Technology

[0002] Some seats have a seat footrest mechanism on their support pillars, which can support the user's feet and thus improve comfort. The seat leg mechanism includes a foot ring and a clamping assembly. The foot ring has mounting holes, and the clamping assembly includes an outer ring, an elastic clamping member, and a friction member. The elastic clamping member has a column clamping hole for clamping the support column and is located within the mounting hole. The elastic clamping member has an approximately trapezoidal mounting groove along the radial direction of the column clamping hole, with the smaller end of the groove facing the column clamping hole. The friction member is inserted into the insertion groove from the outside in. The outer ring is fitted around the outer circumference of the elastic clamping member, and the outer ring and the elastic clamping member clamp and fix the friction member. The foot ring can be adjusted relative to the clamping assembly along the axis of the mounting hole. A conical structure drives the elastic clamping member to tighten, causing the friction member to contact and clamp the support column. The friction member uses friction to fix the position of the seat leg mechanism. When the elastic clamping member expands, it releases the support column, thereby adjusting the position of the seat leg mechanism. Currently, this type of seat leg mechanism is still relatively complex in structure, the assembly process of the clamping assembly is relatively complex, and the production cost is relatively high. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a seat leg mechanism with a simpler structure, simplifying the assembly process of the clamping components and reducing production costs.

[0004] This utility model also proposes a seat having the above-mentioned seat leg mechanism.

[0005] According to a first aspect of the present invention, a seat footrest mechanism includes a footrest frame and a clamping assembly. The footrest frame has a mounting hole; the clamping assembly includes an elastic clamping member and a friction member. The elastic clamping member is disposed on the footrest frame and located in the mounting hole. The elastic clamping member has a column clamping hole, which is coaxially arranged with the mounting hole. The wall of the column clamping hole has a mounting groove, which extends along the axial direction of the column clamping hole and penetrates to the end face of the elastic clamping member to form an insertion interface. The friction member is inserted into the mounting groove along the axial direction of the column clamping hole, and the friction member engages with the groove wall of the mounting groove. The wall of the mounting hole and / or the outer peripheral wall of the elastic clamping member has a conical structure surrounding the axial direction of the mounting hole. The clamping assembly can be adjusted in position relative to the footrest frame along the axial direction of the mounting hole, and the elastic clamping member is tightened by the conical structure.

[0006] According to the first aspect of the present invention, the seat leg mechanism has at least the following advantages: the clamping assembly includes an elastic clamping member and a friction member. The friction member is inserted into the mounting groove of the elastic clamping member along the axial direction of the clamping hole of the column, thereby being installed into the hole wall of the clamping hole of the column. The friction member and the elastic clamping member are fixed by snap-fit, eliminating the need for an outer ring member for fixation, reducing the number of parts, and thus making the structure of the seat leg mechanism simpler. Furthermore, the assembly and fixation of the friction member and the elastic clamping member can be completed by plugging and snap-fitting, simplifying the assembly process of the clamping assembly and thus reducing the production cost of the seat leg mechanism.

[0007] According to some embodiments of the present invention, the elastic clamping member includes a connecting ring and at least two elastic arms. The connecting ring is arranged around the hole axis of the mounting hole, and the elastic arms extend along the hole axis of the mounting hole. One end of the elastic arm is connected to the connecting ring. The elastic arms are arranged at intervals around the hole axis of the mounting hole. The elastic arm is provided with the mounting groove. The insertion interface is located at the other end of the elastic arm. The elastic arms form the column clamping hole. The conical structure includes a first conical surface. The side of the elastic arm opposite to the column clamping hole is provided with the first conical surface.

[0008] According to some embodiments of the present invention, the inner wall of the connecting ring is provided with a plurality of protruding ribs, the protruding ribs extending along the axial direction of the mounting hole, and all the protruding ribs are evenly arranged around the axial direction of the mounting hole.

[0009] According to some embodiments of the present invention, the groove wall of the mounting groove is provided with a snap-fit ​​hole, the snap-fit ​​hole is arranged radially along the mounting hole and extends to the side of the elastic clamping member away from the column clamping hole, and the friction member is provided with a hook portion, the hook portion snapping into the snap-fit ​​hole.

[0010] According to some embodiments of the present invention, the elastic clamping member is provided with a relief groove on the side away from the column clamping hole, the relief groove and the snap-fit ​​hole are arranged along the hole axis direction of the mounting hole, and the relief groove is connected to the snap-fit ​​hole.

[0011] According to some embodiments of the present invention, the conical structure includes a second conical surface, the wall of the mounting hole is provided with the second conical surface, and the second conical surface can contact the first conical surface.

[0012] According to some embodiments of this utility model, the foot ring bracket is threadedly connected to the elastic clamping member. The foot ring bracket is provided with an internal thread on the wall of the mounting hole, and the elastic clamping member is provided with an external thread on its outer periphery. The external thread forms a thread groove, and the internal thread is embedded in the thread groove. The external thread is provided with a travel stop, which is used to limit the travel range of the internal thread relative to the thread groove.

[0013] According to some embodiments of this utility model, the external thread is provided with an elastic anti-reverse arm, which forms the stroke stop portion. When the foot ring rotates forward relative to the elastic clamping member, the internal thread can push the elastic anti-reverse arm to deform to a position that avoids the internal thread. When the foot ring rotates in reverse relative to the elastic clamping member, the elastic anti-reverse arm is used to stop one end of the internal thread.

[0014] According to some embodiments of the present invention, the elastic clamping member is provided with a clearance groove, and the elastic anti-reverse arm is located in the clearance groove.

[0015] According to a second aspect embodiment of the present invention, a seat includes a seat body and the aforementioned seat leg mechanism. The seat body is provided with a support column; the seat leg mechanism is disposed on the support column, and the support column passes through the column clamping hole.

[0016] The seat according to the second aspect of the present invention has at least the following beneficial effects: due to the adoption of the above-mentioned seat leg mechanism, the assembly process of the seat is simplified and the production cost is lower.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a perspective view of the seat leg mechanism according to an embodiment of the present utility model;

[0020] Figure 2 This is an embodiment of the present utility model. Figure 1 A cross-sectional schematic diagram of the local structure along the AA direction.

[0021] Figure 3 This is an exploded view of the seat leg mechanism according to an embodiment of the present utility model;

[0022] Figure 4 This is a front view schematic diagram of the elastic clamping member according to an embodiment of the present utility model;

[0023] Figure 5 This is a three-dimensional schematic diagram of the elastic clamping member according to an embodiment of the present utility model.

[0024] Figure label:

[0025] Foot ring bracket 100, mounting hole 110, second conical surface 111, internal thread 120;

[0026] Clamping assembly 200, elastic clamping part 210, column clamping hole 211, mounting groove 212, insertion interface 2121, connecting ring 213, protruding rib 2131, elastic arm 214, first conical surface 2141, snap-fit ​​hole 2142, clearance groove 215, external thread 216, elastic anti-reverse arm 2161, thread groove 217, clearance groove 218, friction part 220, hook part 221. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figures 1 to 5This embodiment of the present invention provides a seat leg support mechanism, including a footrest frame 100 and a clamping assembly 200. The footrest frame 100 has a mounting hole 110; the clamping assembly 200 includes an elastic clamping member 210 and a friction member 220. The elastic clamping member 210 is disposed on the footrest frame 100 and located at the mounting hole 110. The elastic clamping member 210 has a column clamping hole 211, which is coaxially arranged with the mounting hole 110. The wall of the column clamping hole 211 has a mounting groove 212, which extends along the axis of the column clamping hole 211 and penetrates through the elastic clamping member 210. The end face of 0 forms an insertion interface 2121. The friction element 220 is inserted into the mounting groove 212 along the hole axis of the column clamping hole 211. The friction element 220 is engaged with the groove wall of the mounting groove 212. The hole wall of the mounting hole 110 and the outer peripheral wall of the elastic clamping element 210 are provided with a conical structure around the hole axis of the mounting hole 110. The clamping assembly 200 can adjust its position relative to the foot ring frame 100 along the hole axis of the mounting hole 110, and the elastic clamping element 210 is tightened by the conical structure.

[0032] The clamping assembly 200 includes an elastic clamping member 210 and a friction member 220. The friction member 220 is inserted into the mounting groove 212 of the elastic clamping member 210 along the axis of the column clamping hole 211, thereby being installed into the hole wall of the column clamping hole 211. The friction member 220 and the elastic clamping member 210 are fixed by snap-fit, eliminating the need for an outer ring for fixation, reducing the number of parts, and making the structure of the seat leg mechanism simpler. Furthermore, the assembly and fixation of the friction member 220 and the elastic clamping member 210 can be completed by plugging and snap-fitting, simplifying the assembly process of the clamping assembly 200 and thus reducing the production cost of the seat leg mechanism.

[0033] In an embodiment, the elastic clamping member 210 includes a connecting ring 213 and at least two elastic arms 214. The connecting ring 213 is arranged around the hole axis of the mounting hole 110, and the elastic arms 214 extend along the hole axis of the mounting hole 110. One end of the elastic arm 214 is connected to the connecting ring 213. The elastic arms 214 are arranged at intervals around the hole axis of the mounting hole 110. The elastic arm 214 is provided with a mounting groove 212. The insertion interface 2121 of the mounting groove 212 is located at the other end of the elastic arm 214. The elastic arms 214 surround the column clamping hole 211. The conical structure includes a first conical surface 2141. The side of the elastic arm 214 away from the column clamping hole 211 is provided with the first conical surface 2141. Multiple elastic arms 214 are provided, and each elastic arm 214 has a first conical surface 2141 on the side opposite to the column clamping hole 211. When the footrest 100 is adjusted along the axis of the mounting hole 110, the wall of the mounting hole 110 can abut against the first conical surface 2141, causing each elastic arm 214 to swing and move closer to each other, thereby reducing the diameter of the column clamping hole 211, and thus causing the clamping assembly 200 to clamp the supporting column. When the wall of the mounting hole 110 separates from the first conical surface 2141, the elastic arms 214 reset, thereby restoring the diameter of the column clamping hole 211, thus releasing the supporting column. At this time, the seat footrest mechanism can be adjusted along the axis of the column clamping hole 211.

[0034] In this embodiment, the elastic clamping member 210 is provided with four elastic arms 214. It is conceivable that in other embodiments, the elastic clamping member 210 may also be provided with two, three, five or more elastic arms 214, and those skilled in the art can choose according to actual needs.

[0035] It is conceivable that in other embodiments, the elastic clamping member 210 may also have other structures, such as the elastic clamping member 210 being C-shaped, the elastic clamping member 210 being able to tighten and relax as a whole, and the entire elastic clamping member 210 forming a column clamping hole 211; or the elastic clamping member 210 includes at least two clamping bodies arranged along the hole axis direction of the mounting hole 110, with adjacent two clamping bodies connected by a connecting spring, in which case the friction member 220 is disposed on the clamping body, and each clamping body surrounds the column clamping hole 211.

[0036] In this embodiment, the inner wall of the connecting ring 213 is provided with a plurality of protruding ribs 2131, which extend along the axial direction of the mounting hole 110, and all the protruding ribs 2131 are evenly arranged around the axial direction of the mounting hole 110. With the protruding ribs 2131 provided, when the seat leg mechanism is installed on the support column, it is not necessary for the entire inner wall of the connecting ring 213 to be in contact with the support column, thus facilitating the relatively smooth sliding adjustment of the position along the support column when the elastic clamp 210 releases the support column.

[0037] Specifically, the interior of the connecting ring 213 may be provided with three, four or more protruding ribs 2131, which can be selected by those skilled in the art according to actual needs.

[0038] In this embodiment, the mounting groove 212 has a snap-fit ​​hole 2142 on its groove wall. The snap-fit ​​hole 2142 is radially arranged along the mounting hole 110 and extends to the side of the elastic clamping member 210 opposite to the column clamping hole 211. The friction member 220 has a hook portion 221 that snaps into the snap-fit ​​hole 2142. The above structure has a relatively simple snap-fit ​​method, and the processing difficulty of the hook portion 221 and the snap-fit ​​hole 2142 is low. It is conceivable that in other embodiments, the hook portion 221 can be provided on the groove wall of the mounting groove 212, and the snap-fit ​​hole 2142 can be provided on the friction member 220, allowing the hook portion 221 to snap into the snap-fit ​​hole 2142.

[0039] Specifically, the snap-fit ​​hole 2142 extends to the side of the elastic clamping member 210 away from the column clamping hole 211. When the friction member 220 is damaged, the user can push the hook part 221 to disengage the hook part 221 from the snap-fit ​​hole 2142, thereby disassembling and replacing the new friction member 220.

[0040] It is understood that in other embodiments, the snap-fit ​​hole 2142 may also be located on any wall of the mounting groove 212, and those skilled in the art may choose according to actual needs.

[0041] In this embodiment, the elastic clamping member 210 has a relief groove 215 on the side opposite to the column clamping hole 211. The relief groove 215 and the snap-fit ​​hole 2142 are arranged along the axis of the mounting hole 110, and the relief groove 215 communicates with the snap-fit ​​hole 2142. The relief groove 215 facilitates the machining of the snap-fit ​​hole 2142, reducing the difficulty of mold forming; and when the friction member 220 needs to be disassembled and replaced, it facilitates the push-pull hook part 221 to disengage from the snap-fit ​​hole 2142, thereby reducing the difficulty of replacing the friction member 220.

[0042] In this embodiment, the conical structure includes a second conical surface 111. The wall of the mounting hole 110 is provided with the second conical surface 111, which can contact the surface of the first conical surface 2141. By providing the second conical surface 111, when the foot ring frame 100 is adjusted relative to the clamping assembly 200, the mounting hole 110 contacts the surface of the first conical surface 2141 of the elastic clamping member 210 through the second conical surface 111. This increases the contact area between the foot ring frame 100 and the elastic clamping member 210, allowing the foot ring frame 100 to apply force more evenly, driving the elastic arm 214 to deform elastically, causing the diameter of the column clamping hole 211 to shrink; and reducing the risk of wear in the contact area between the foot ring frame 100 and the elastic clamping member 210.

[0043] Specifically, the first conical surface 2141 is a partial conical surface; the second conical surface 111 is an annular conical surface.

[0044] It is conceivable that in other embodiments, the conical structure may be provided only on the elastic clamping member 210, or only on the wall of the mounting hole 110. Those skilled in the art can choose according to actual needs.

[0045] In some existing seat leg mechanisms, a retaining ring is used between the leg ring 100 and the elastic clamping member 210 to limit the travel of the leg ring 100 along the axis of the mounting hole 110. Therefore, the following improvement is made:

[0046] In this embodiment, the foot ring 100 is threadedly connected to the elastic clamping member 210. The foot ring 100 has an internal thread 120 on the wall of the mounting hole 110. The elastic clamping member 210 has an external thread 216 on its outer periphery. The external thread 216 forms a thread groove 217. The internal thread 120 is embedded in the thread groove 217. The external thread 216 has a travel stop portion, which is used to limit the travel range of the internal thread 120 relative to the thread groove 217. By means of a threaded connection, when the foot ring 100 is rotated, the foot ring 100 can move and adjust its position relative to the elastic clamping member 210 along the axis of the mounting hole 110, thereby enabling the clamping assembly 200 to adjust its position relative to the foot ring 100 along the axis of the mounting hole 110. Furthermore, by providing a travel stop in the thread groove 217, the rotational travel range of the foot ring 100 relative to the elastic clamping member 210 can be limited, avoiding the risk of the foot ring 100 and the elastic clamping member 210 accidentally separating completely. Moreover, the structure for limiting the travel is relatively simple, and no additional parts are required to limit the position of the foot ring 100 relative to the elastic clamping member 210.

[0047] In this embodiment, the external thread 216 is provided with an elastic anti-reverse arm 2161, which forms a travel stop. When the foot ring 100 rotates forward relative to the elastic clamping member 210, the internal thread 120 can push the elastic anti-reverse arm 2161 to deform to a position that avoids the internal thread 120. When the foot ring 100 rotates in reverse relative to the elastic clamping member 210, the elastic anti-reverse arm 2161 is used to stop one end of the internal thread 120. When the footrest 100 and the elastic clamping member 210 are assembled, the internal thread 120 pushes the elastic anti-reverse arm 2161 to deform to the avoidance position, so that the footrest 100 can be assembled with the elastic clamping member 210. When the footrest 100 is reversed, the elastic anti-reverse arm 2161 can stop one end of the internal thread 120, thereby limiting the rotational stroke of the footrest 100. No additional retaining ring is needed to limit the footrest 100, simplifying the structure of the seat footrest mechanism and reducing the assembly difficulty.

[0048] In an embodiment, the internal thread 120 includes a first thread segment and a second thread segment arranged in a spiral direction. The end of the first thread segment is opposite to the beginning of the second thread segment. The end of the first thread segment is provided with an elastic anti-reverse arm 2161, which is set at an acute angle relative to the forward rotation direction of the thread groove 217. The foot ring frame 100 and the elastic clamping component 210 are manufactured separately. When they are assembled, the internal thread 120 rotates forward and passes through the elastic anti-reverse arm 2161. Since the rotation direction of the elastic anti-reverse arm 2161 and the thread groove 217 is set at an acute angle, the internal thread 120 pushes the elastic anti-reverse arm 2161 to deform. Then the internal thread 120 can pass through the elastic anti-reverse arm 2161, and then the elastic anti-reverse arm 2161 returns to its original deformation. When the foot ring frame 100 rotates in reverse, if one end of the internal thread 120 contacts and pushes the elastic anti-reverse arm 2161, the internal thread 120 and the elastic anti-reverse arm 2161 are set at an obtuse angle. The internal thread 120 is difficult to push the elastic anti-reverse arm 2161 to undergo elastic deformation, so that the elastic anti-reverse arm 2161 can limit the stroke of the internal thread 120, that is, limit the rotation stroke range of the foot ring frame 100.

[0049] In this embodiment, the elastic clamping member 210 is provided with a clearance groove 218, and the elastic anti-reverse arm 2161 is located within the clearance groove 218. The clearance groove 218 facilitates the use of a portion of the external thread 216 to form the elastic anti-reverse arm 2161, resulting in a simple structure that is easy to implement.

[0050] Specifically, the elastic clamping component 210 is made entirely of plastic to give it high elasticity.

[0051] Specifically, the internal thread 120 is set to no more than one turn, which helps to simplify the production mold structure of the foot ring 100.

[0052] It is conceivable that in other embodiments, the travel stop can also be other structures, for example, the travel stop can be a spring pin with a guide ramp on one side. When the foot ring 100 rotates clockwise, the internal thread 120 pushes the spring pin inward through the guide ramp, allowing the internal thread 120 to pass through the spring pin, and then the spring pin resets; when the foot ring 100 rotates counterclockwise, the spring pin stops one end of the internal thread 120, thereby limiting the rotational travel.

[0053] This utility model also discloses a seat, including a seat body and the aforementioned seat leg mechanism. The seat body is provided with a support column; the seat leg mechanism is disposed on the support column, and the support column passes through the column clamping hole 211. Due to the adoption of the aforementioned seat leg mechanism, the assembly process of the seat is simplified and the production cost is reduced.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A seat leg mechanism and a seat, characterized in that, include: The foot ring holder (100) is provided with mounting holes (110); The clamping assembly (200) includes an elastic clamping member (210) and a friction member (220). The elastic clamping member (210) is disposed on the foot ring frame (100) and located in the mounting hole (110). The elastic clamping member (210) is provided with a column clamping hole (211). The column clamping hole (211) is coaxially disposed with the mounting hole (110). The wall of the column clamping hole (211) is provided with a mounting groove (212). The mounting groove (212) extends along the axis of the column clamping hole (211) and penetrates to the end face of the elastic clamping member (210) to form an insertion connection. The friction element (220) is inserted into the mounting groove (212) along the axis of the column clamping hole (211). The friction element (220) is engaged with the groove wall of the mounting groove (212). The wall of the mounting hole (110) and / or the outer peripheral wall of the elastic clamping element (210) are provided with a conical structure around the axis of the mounting hole (110). The clamping assembly (200) can adjust its position relative to the foot ring frame (100) along the axis of the mounting hole (110) and tighten the elastic clamping element (210) through the conical structure.

2. The seat leg mechanism and seat according to claim 1, characterized in that: The elastic clamping member (210) includes a connecting ring (213) and at least two elastic arms (214). The connecting ring (213) is arranged around the hole axis of the mounting hole (110). The elastic arms (214) extend along the hole axis of the mounting hole (110). One end of the elastic arm (214) is connected to the connecting ring (213). Each elastic arm (214) is arranged at intervals around the hole axis of the mounting hole (110). The elastic arm (214) is provided with the mounting groove (212). The insertion interface (2121) is located at the other end of the elastic arm (214). Each elastic arm (214) surrounds the column clamping hole (211). The conical structure includes a first conical surface (2141). The side of the elastic arm (214) facing away from the column clamping hole (211) is provided with the first conical surface (2141).

3. The seat leg mechanism and seat according to claim 2, characterized in that: The inner wall of the connecting ring (213) is provided with a plurality of protruding ribs (2131), which extend along the hole axis of the mounting hole (110), and all the protruding ribs (2131) are evenly arranged around the hole axis of the mounting hole (110).

4. The seat leg mechanism and seat according to claim 1, characterized in that: The mounting groove (212) has a snap-fit ​​hole (2142) on its groove wall. The snap-fit ​​hole (2142) is arranged radially along the mounting hole (110) and extends to the side of the elastic clamping member (210) away from the column clamping hole (211). The friction member (220) has a hook part (221) which is snapped into the snap-fit ​​hole (2142).

5. The seat leg mechanism and seat according to claim 4, characterized in that: The elastic clamping member (210) has a relief groove (215) on the side away from the column clamping hole (211). The relief groove (215) and the snap-fit ​​hole (2142) are arranged along the hole axis of the mounting hole (110). The relief groove (215) is connected to the snap-fit ​​hole (2142).

6. The seat leg mechanism and seat according to claim 2, characterized in that: The conical structure includes a second conical surface (111), and the wall of the mounting hole (110) is provided with the second conical surface (111). The second conical surface (111) can contact the surface of the first conical surface (2141).

7. The seat leg mechanism and seat according to claim 1, characterized in that: The foot ring holder (100) is threadedly connected to the elastic clamping member (210). The foot ring holder (100) has an internal thread (120) on the wall of the mounting hole (110). The elastic clamping member (210) has an external thread (216) on its outer periphery. The external thread (216) forms a thread groove (217). The internal thread (120) is embedded in the thread groove (217). The external thread (216) has a travel stop portion, which is used to limit the travel range of the internal thread (120) relative to the thread groove (217).

8. The seat leg mechanism and seat according to claim 7, characterized in that: The external thread (216) is provided with an elastic anti-reverse arm (2161), which forms the stroke stop. When the foot ring (100) rotates forward relative to the elastic clamp (210), the internal thread (120) can push the elastic anti-reverse arm (2161) to deform to avoid the internal thread (120). When the foot ring (100) rotates in reverse relative to the elastic clamp (210), the elastic anti-reverse arm (2161) is used to stop one end of the internal thread (120).

9. The seat leg mechanism and seat according to claim 8, characterized in that: The elastic clamping member (210) is provided with a clearance groove (218), and the elastic anti-reverse arm (2161) is located in the clearance groove (218).

10. A type of seat, characterized in that, include: The main body of the seat is equipped with supporting columns; The seat leg mechanism according to any one of claims 1 to 9 is disposed on the support column, and the support column passes through the column clamping hole (211).

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