support device

Abstract

This application provides a support device, comprising: a chassis including a large hole and a small hole; a column including a receiving groove; a screw fastener screwed into the column and corresponding to the receiving groove; and an elastic limiting member sandwiched between the column and the screw fastener and corresponding to the receiving groove; wherein the column and the chassis can be switched between a pre-assembled state and an assembled state, in the pre-assembled state, the screw fastener passes through the large hole and the elastic limiting member is received in the receiving groove, and in the assembled state, the screw fastener passes through the small hole and the elastic limiting member is received in the large hole.

Description

Technical Field

[0001] This application provides a support device, particularly a support device that prevents the column from detaching from the chassis before the screws are tightened. Background Technology

[0002] The existing support device includes a chassis and a column. One end of the column has a bolt, and the chassis has a groove for the bolt to slide in. This groove includes a large-diameter section and a small-diameter section, both shaped like keyholes. After the bolt passes through the large-diameter section and slides into the small-diameter section, the column and chassis are pre-fixed. However, in this pre-fixed state, the existing support device requires the bolt to be passed through the chassis and tightened onto the column to prevent the column from detaching from the chassis. Before tightening the bolt, the bolt may still slide from the small-diameter section to the large-diameter section, causing the column to fall off the chassis, resulting in assembly inconvenience or even improper impact. Utility Model Content

[0003] This application provides a support device, comprising: a chassis including a chassis body and at least one through hole, the through hole being disposed along a first axial direction in the chassis body and having a large hole and a small hole arranged and communicating with each other along a second axial direction perpendicular to the first axial direction; a column including a column body and at least one receiving groove formed by a recess in the column body; at least one fastener, screwed into the column body and corresponding to the receiving groove; and at least one elastic limiting member, clamped between the column body and the fastener. Corresponding to the receiving groove; wherein, when the column and the chassis are mated, they can switch between a pre-assembled state and an assembled state. In the pre-assembled state, the screw fastener passes through the large hole along the first axial direction, and the elastic limiting member is squeezed and deformed by the disc in the first axial direction and accommodated in the receiving groove. In the assembled state, the screw fastener passes through the small hole, and the elastic limiting member is accommodated in the large hole and is limited by the disc in the second axial direction, thereby maintaining it in the assembled state.

[0004] As described above, when the support device changes from the pre-assembled state to the assembled state, the screw head slides from the large hole into the small hole along the second axis, so that the elastic limiting member is not squeezed by the disc in the first axis and rebounds, and moves from the receiving groove to the large hole. At this time, the elastic limiting member is limited by the disc in the second axis, so that the screw head cannot slide from the small hole into the large hole.

[0005] As described above, the elastic limiting member includes a through hole, a fixed part, a bent part, and a stop part. The through hole is disposed in the fixed part and the fastener passes through it. The fixed part is sandwiched between the column and the fastener. The bent part extends outward from the fixed part and gradually moves away from the column. The stop part extends outward from the bent part.

[0006] As described above, in the second axial direction, the length of the stop portion is slightly less than the length of the small hole, and when the elastic limiting member is not squeezed by the disc, the stop portion and the fixed portion have a discontinuity in the first axial direction, which is greater than the depth of the receiving groove recessed from the column, so that the stop portion is located outside the receiving groove.

[0007] As described in the aforementioned support device, the elastic limiting element is a metal spring.

[0008] As described above, the elastic limiting member includes a through hole, a fixed portion, an extension portion and a stop portion. The through hole is disposed in the fixed portion and the fastener passes through it. The fixed portion is sandwiched between the column and the fastener. The extension portion extends outward from the fixed portion along the second axial direction, and the stop portion extends outward from the extension portion along the first axial direction.

[0009] As described above, in the second axial direction, the length of the stop portion is slightly less than the length of the small hole, and when the elastic limiting member is not squeezed by the disc, the extension portion is located inside the receiving groove, and the stop portion is located outside the receiving groove.

[0010] As described above, the support device also includes a fulcrum and an inclined surface. The fulcrum protrudes from the column and is located within the receiving groove. The inclined surface is formed on the column and faces the receiving groove, and is adjacent to the fulcrum. In the pre-assembled state, the extension and the stop bend relative to the fixed part with the fulcrum as the fulcrum and are adjacent to the inclined surface. In the assembled state, the extension and the stop do not bend relative to the fixed part and are away from the inclined surface.

[0011] As described above, the elastic limiting member further includes a plurality of protrusions, which are spaced apart from each other on the fixed part and are at the same height as the fulcrum part on the first axis.

[0012] As described above, the elastic limiting member is made of polyoxymethylene (POM) material, and the stop portion is roughly an E-shaped rib.

[0013] As described above, the support device includes a head, a stepped portion and a threaded portion connected in sequence. The column also includes a blind hole provided in the column body and communicating with the receiving groove. The threaded portion is screwed into the blind hole. The stepped portion and the head are exposed in the blind hole, and the stepped portion and the column body together clamp the elastic limiting member.

[0014] As described above, in the support device, the cross-sectional area of ​​the large hole is greater than the cross-sectional area of ​​the head, the cross-sectional area of ​​the head is greater than the cross-sectional area of ​​the stepped portion, and the cross-sectional area of ​​the stepped portion is greater than the cross-sectional area of ​​the threaded portion.

[0015] As described above, the chassis also includes at least one limiting body, which corresponds to the perforation and extends outward from the chassis body, and surrounds and defines the small hole. In the assembled state, the stepped portion is located in the small hole, and the head is limited by the limiting body in the first axis.

[0016] As described above, the chassis also includes a receiving groove formed by a recess in the chassis body and corresponding to the limiting body, and correspondingly communicating with the through hole, for receiving the head.

[0017] In summary, after the screw fastener of the support device of this application is located in the through hole of the chassis and moves to a fixed point, the elastic limiting member can automatically lock into the through hole to prevent the screw fastener from returning along the original path, and can effectively prevent the column from detaching from the chassis before the screw is tightened. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall support device of this application.

[0019] Figure 2 This is an exploded view of the support device according to the first embodiment of this application.

[0020] Figure 3 This is a bottom view of the chassis in the support device according to the first embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the elastic limiting member in the support device according to the first embodiment of this application.

[0022] Figure 5 This is a cross-sectional view of the support device in the first embodiment of this application when it is not docked.

[0023] Figure 6 This is a cross-sectional schematic diagram of the support device in a pre-assembled state according to the first embodiment of this application.

[0024] Figure 7 This is a cross-sectional schematic diagram of the support device in an assembled state according to the first embodiment of this application.

[0025] Figure 8 This is a bottom view of the support device in an assembled state according to the first embodiment of this application.

[0026] Figure 9 This is an exploded view of the support device according to the second embodiment of this application.

[0027] Figure 10 This is a bottom view of the chassis in the support device according to the second embodiment of this application.

[0028] Figure 11 and Figure 12This is an overall schematic diagram of the elastic limiting member in the support device of the second embodiment of this application from different perspectives.

[0029] Figure 13 This is a cross-sectional view of the support device in the second embodiment of this application when it is not docked.

[0030] Figure 14 This is a cross-sectional schematic diagram of the support device in a pre-assembled state according to the second embodiment of this application.

[0031] Figure 15 This is a cross-sectional schematic diagram of the support device in an assembled state according to the second embodiment of this application.

[0032] Figure 16 This is a bottom view of the support device in an assembled state according to the second embodiment of this application.

[0033] Explanation of main component symbols

[0034] 1000: Support device 26: Inclined surface

[0035] 1: Chassis 27: Positioning convex pillar

[0036] 11: Disc body 3: Screws

[0037] 111: Top surface 31: Head

[0038] 112: Bottom surface 32: Stepped section

[0039] 12: Perforation 33: Threaded section

[0040] 121: Large-hole body; 4, 6: Elastic limiting components

[0041] 122: small hole body 41, 61: fixed part

[0042] 13: Limiting body 42: Bending part

[0043] 14: Receiving groove 62: Extension

[0044] 15: Through hole; 44, 64: Through hole

[0045] 16: Positioning slot 5: Screw

[0046] 2: Columns 43, 63: Stop section

[0047] 21: Column 65: Protrusion

[0048] 211: End face D: Depth

[0049] 22: Reception slot H: Discontinuity

[0050] 23: Blind hole F: External force

[0051] 24: Screw hole X1: First axial direction

[0052] 25: Support point X2: Second axis. Detailed Implementation

[0053] Please see Figure 1 and Figure 2 The support device 1000 of the first embodiment of this application includes a base 1, a column 2, two bolts 3, two elastic limiting members 4, and three screws 5. The base 1 and the column 2 can be mated or detached. The bolts 3 are fixed to the column 2. The elastic limiting members 4 are clamped between the column 2 and the bolts 3. After the base 1 and the column 2 are mated, the screws 5 can pass through the base 1 and be screwed to the column 2. The structure of each component and the connection relationship between them will be described in detail below. Some of the drawings show a first axis X1 and a second axis X2 that are perpendicular to each other.

[0054] Please refer to the following: Figure 3 The chassis 1 can be stably placed directly on a work surface (e.g., a tabletop) and includes a disc body 11, two through holes 12, two limiting bodies 13, two receiving slots 14, and a three-way hole 15. The disc body 11 is generally a square plate with a top surface 111 and a bottom surface 112 facing each other. The through holes 12 are spaced apart along a first axial direction X1 in the disc body 11, and each has a large hole 121 and a small hole 122 arranged along a second axial direction X2. The large hole 121 generally has a circular cross-section and communicates with the small hole 122, thereby forming a round-headed keyhole-shaped cross-section. The limiting bodies 13 correspond to the through holes 12 and extend outward from the disc body 11, respectively surrounding and defining the small hole 122, and generally have a U-shaped cross-section. The receiving groove 14 is recessed from the bottom surface 112 of the disc body 11 and has a roughly U-shaped cross section corresponding to the limiting body 13, and is connected to the through hole 12. The through hole 15 is provided in the disc body 11 along the first axial direction X1 and is spaced apart from the through hole 12.

[0055] Please refer to the following: Figure 5 The column 2 includes a column body 21, two receiving grooves 22, two blind holes 23, and three screw holes 24. The column body 21 has an end face 211 and generally has a polygonal cross-section. The receiving grooves 22 are recessed from the end face 211 of the column body 21 at intervals and have a depth D. The blind holes 23 are respectively corresponding to and communicating with the receiving grooves 22 and are provided in the column body 21. The screw holes 24 are recessed from the end face 211 of the column body 21 at intervals and are spaced apart from the receiving grooves 22.

[0056] The screw fastener 3 comprises a head 31, a stepped portion 32, and a threaded portion 33 connected in sequence. The cross-sectional area of ​​the head 31 is larger than that of the stepped portion 32, and the cross-sectional area of ​​the stepped portion 32 is larger than that of the threaded portion 33. The threaded portion 33 is screwed into the blind hole 23. The stepped portion 32 and the head 31 are exposed in the blind hole 23 and correspond to the receiving groove 22, and part of the stepped portion 32 and the head 31 protrude from the end face 211 of the column 21. In this embodiment, the screw fastener 3 is a stepped screw.

[0057] Please refer to the following: Figure 4 The elastic limiting member 4 is generally a sheet body and includes a fixing portion 41, a bending portion 42, a stop portion 43, and a through hole 44. The fixing portion 41 is sandwiched between the column 21 and the stepped portion 32 of the fastener 3. The bending portion 42 extends outward from the fixing portion 41 and gradually moves away from the column 21. The stop portion 43 extends outward from the bending portion 42 and is generally parallel to the fixing portion 41. The stop portion 43 and the fixing portion 41 have a gap H in the first axial direction X1, which is greater than the depth D of the receiving groove 22, so that the stop portion 43 is located outside the receiving groove 22 and protrudes from the end face 211 of the column 21. The through hole 44 passes through the fixing portion 41 and allows the threaded portion 33 of the fastener 3 to pass through. In this embodiment, the elastic limiting member 4 is a metal spring sheet, and on the second axial direction X2, the length of the stop portion 43 is slightly smaller than the length of the small hole 122.

[0058] The following describes the docking and matching of the column 2 and the chassis 1 in the support device 1000 of the first embodiment of this application. When the column 2 and the chassis 1 are docked and matched, they can be in a pre-assembled state. Figure 6 ) and a set of independent states ( Figure 7 and Figure 8 Transform between ) . First, as Figure 5 As shown, when the column 2 and the chassis 1 are not connected, the end face 211 of the column 21 faces the top surface 111 of the disk 11, so that the screw fasteners 3 correspond to the large hole 121 of the through hole 12. At this time, the through hole 12 and the receiving groove 22 are relatively misaligned in the first axial direction X1, and the stop part 43 of the elastic limiting member 4 corresponds to the disk 11 along the first axial direction X1 but does not correspond to the through hole 12.

[0059] Next, column 2 is docked and matched with chassis 1, such as... Figure 6 As shown, the end face 211 of the column 21 is brought into contact with the top surface 111 of the disc 11, so that the screw 3 passes through the large hole 121 along the first axial direction X1, and the head 31 and the stepped part 32 are respectively accommodated in the large hole 121. At this time, the column 2 and the chassis 1 are in a pre-assembled state. The stop part 43 of the elastic limiting member 4 is deformed by the disc 11 in the first axial direction X1 and is accommodated in the receiving groove 22. The through hole 15 does not correspond to the screw hole 24.

[0060] After that, as Figure 7 and Figure 8 As shown, an external force F is applied to the column 21, causing the column 2 and the chassis 1 to change from a pre-assembled state to an assembled state. The stepped portion 32 of the fastener 3 slides from the large hole 121 into the small hole 122 along the second axis X2. Because the length of the stop portion 43 is slightly smaller than the length of the small hole 122 (that is, the stroke of the stepped portion 32 in the small hole 122 is slightly greater than the length of the stop portion 43), it is no longer squeezed by the disc 11 along the first axis X1 and rebounds, protruding out of the column 2 again. The end face 211 of column 1 is partially accommodated in the large hole 121. The through holes 15 correspond to the screw holes 24. At this time, the head 31 is partially located in the receiving groove 14 and is limited by the limiting body 13 in the first axial direction X1. The stop part 43 of the elastic limiting member 4 is limited by the disc body 11 in the second axial direction X2, so that the screw 3 cannot slide from the small hole 122 into the large hole 121, that is, the column 2 and the chassis 1 cannot be separated from each other to complete the docking and matching operation (i.e., remain in the assembled state). Finally, the screws 5 pass through the through holes 15 and are screwed into the screw holes 24 respectively, so that the column 2 and the chassis 1 are mutually locked.

[0061] If the column 2 is to be detached from the chassis 1, the screw 5 is first unscrewed from the screw hole 24 and detached from the through hole 15, and the stop portion 43 of the elastic limiting member 4 is pressed along the second axis X2 via the large hole body 121 (for example, by pressing with a screwdriver), so that the stop portion 43 is moved away from the large hole body 121 and accommodated in the receiving groove 22. The stop portion 43 of the elastic limiting member 4 is no longer limited by the disc body 11 in the second axis X2, and the stepped portion 32 of the screw fastener 3 can slide from the small hole body 122 into the large hole body 121 along the second axis X2 (the assembly state changes to the pre-assembly state). After that, the column 2 can be detached from the chassis 1 along the first axis X1.

[0062] Please see Figure 9 The support device 1000 of the second embodiment of this application includes a chassis 1, a column 2, a bolt 3, an elastic limiting member 6, and two screws 5. The chassis 1 and the column 2 can be mated or detached from each other. The bolt 3 is fixed to the column 2. The elastic limiting member 6 is clamped between the column 2 and the bolt 3. After the chassis 1 and the column 2 are mated, the screws 5 can pass through the chassis 1 and be screwed to the column 2. The structure of each component and the connection relationship between them will be described in detail below. In some of the drawings, a first axis X1 and a second axis X2 that are perpendicular to each other are shown.

[0063] Please refer to the following: Figure 10The chassis 1 is placed on a work surface (e.g., a tabletop) and includes a disc body 11, a through hole 12, a limiting body 13, a receiving groove 14, two through holes 15, and a positioning groove 16. The disc body 11 is generally a square plate with a top surface 111 and a bottom surface 112 facing each other. The through hole 12 extends through the disc body 11 along a first axial direction X1 and has a large hole 121 and a small hole 122 arranged along a second axial direction X2. The large hole 121 generally has a square cross-section and communicates with the small hole 122, both having a square keyhole-shaped cross-section. The limiting body 13 corresponds to the through hole 12 and extends outward from the disc body 11, surrounding and defining the small hole 122, and generally has a U-shaped cross-section. The receiving groove 14 is recessed from the bottom surface 112 of the disc body 11 and has a roughly U-shaped cross-section corresponding to the limiting body 13, and corresponds to the through hole 12. The through hole 15 extends through the disc body 11 along the first axial direction X1 and is spaced apart from the through hole 12. The positioning groove 16 extends through the disc body 11 along the first axial direction X1 and is spaced apart from the through hole 12 and the through hole 15, and gradually narrows along the second axial direction X2.

[0064] Please refer to the following: Figure 13 The column 2 includes a column body 21, a receiving groove 22, a blind hole 23, two screw holes 24, a fulcrum portion 25, an inclined surface 26, and a positioning protrusion 27. The column body 21 has an end face 211 and generally has a polygonal cross-section. The receiving groove 22 is recessed from the end face 211 of the column body 21. The blind hole 23 corresponds to and communicates with the receiving groove 22 and is provided in the column body 21. The screw holes 24 are recessed from the end face 211 of the column body 21 at intervals and are spaced apart from the receiving groove 22. The fulcrum portion 25 protrudes from the column body 21 and is located within the receiving groove 22. The inclined surface 26 is formed in the column body 21 and faces the receiving groove 22, and is adjacent to the fulcrum portion 25. The positioning protrusion 27 protrudes from the end face 211 of the column body 21 and is spaced apart from the receiving groove 22 and the screw holes 24.

[0065] The screw fastener 3 comprises a head 31, a stepped portion 32, and a threaded portion 33 connected in sequence. The cross-sectional area of ​​the head 31 is larger than that of the stepped portion 32, and the cross-sectional area of ​​the stepped portion 32 is larger than that of the threaded portion 33. The threaded portion 33 is screwed into the blind hole 23. The stepped portion 32 and the head 31 are exposed in the blind hole 23 and correspond to the receiving groove 22, and the stepped portion 32 and the head 31 protrude from the end face 211 of the column 21. In this embodiment, the screw fastener 3 is a stepped screw.

[0066] Please refer to the following: Figure 11 and Figure 12The elastic limiting member 6 is generally a long plate and includes a fixed portion 61, an extension portion 62, a stop portion 63, a through hole 64, and three protrusions 65. The through hole 64 passes through the fixed portion 61 and allows the threaded portion 33 of the fastener 3 to pass through. The protrusions 65 are spaced apart and circumferentially arranged around the fixed portion 61, and together with the fixed portion 61, are sandwiched between the column 21 and the stepped portion 32 of the fastener 3. The protrusions 65 are at the same height as the fulcrum portion 25 in the first axial direction X1. The extension portion 62 extends outward from the fixed portion 61 along the second axial direction X2 and is located within the receiving groove 22. The stop portion 63 extends outward from the extension portion 62 along the first axial direction X1 and is generally an E-shaped rib, located outside the receiving groove 22. In this embodiment, the elastic limiting member 6 is made of polyoxymethylene (POM) material, and the length of the stop portion 63 is slightly smaller than the length of the small hole 122.

[0067] The following describes the docking and matching of the column 2 and the chassis 1 in the support device 1000 of the second embodiment of this application. When the column 2 and the chassis 1 are docked and matched, they can be in a pre-assembled state. Figure 14 ) and a set of independent states ( Figure 15 and Figure 16 Transform between ) . First, as Figure 13 As shown, when the column 2 and the chassis 1 are not connected, the end face 211 of the column 21 faces the top surface 111 of the disk 11, so that the screw fasteners 3 correspond to the large hole 121 of the through hole 12 respectively. At this time, the through hole 12 and the receiving groove 22 are relatively misaligned on the first axis X1. The extension 62 and the stop 63 of the elastic limiting member 6 correspond to the disk 11 along the first axis X1 but do not correspond to the through hole 12. The extension 62 is located in the receiving groove 22 and abuts against the fulcrum 25, and the stop 63 is located outside the receiving groove 22.

[0068] Next, column 2 is docked and matched with chassis 1, such as... Figure 14 As shown, the end face 211 of the column 21 contacts the top surface 111 of the disc 11, so that the screw 3 passes through the large hole 121 along the first axial direction X1. The head 31 and the stepped part 32 are respectively accommodated in the large hole 121, and the positioning protrusion 27 passes through the wider end of the positioning groove 16. At this time, the column 2 and the chassis 1 are in a pre-assembled state. The extension part 62 and the stop part 63 of the elastic limiting member 6 are deformed by the disc 11 in the first axial direction X1, and bend relative to the fixed part 61 with the fulcrum part 25 as the fulcrum, and are accommodated in the accommodating groove 22 and adjacent to the inclined surface 26. The through hole 15 does not correspond to the screw hole 24.

[0069] After that, as Figure 15 and Figure 16As shown, an external force F is applied to the column 21, causing the column 2 and the chassis 1 to change from the pre-assembled state to the assembled state. The stepped portion 32 of the fastener 3 slides from the large hole 121 into the small hole 122 along the second axis X2. Because the length of the stop portion 63 is slightly smaller than the length of the small hole 122 (that is, the stroke of the stepped portion 32 in the small hole 122 is slightly greater than the length of the stop portion 63), it is no longer squeezed by the disc 11 and rebounds in the first axis X1, and does not bend relative to the fixed portion 61 and move away from the inclined surface 26. The extension 62 returns to the receiving groove 22, and the stop 63 is located outside the receiving groove 22 and inside the large hole 121. The through holes 15 correspond to the screw holes 24 respectively. The positioning protrusion 27 slides into the narrower end of the positioning groove 16. At this time, the head 31 is located in the receiving groove 14 and is limited by the limiting body 13 in the first axis X1. The stop 63 of the elastic limiting member 6 is limited by the disc body 11 in the second axis X2, so that the screw 3 cannot slide from the small hole 122 into the large hole 121, that is, the column 2 and the chassis 1 cannot detach from each other to complete the docking and matching operation. Finally, the screws 5 pass through the through holes 15 and are screwed into the screw holes 24 respectively, making the docking between the column 2 and the chassis 1 more stable.

[0070] If the column 2 is to be detached from the chassis 1, the screw 5 is first unscrewed from the screw hole 24 and detached from the through hole 15. The extension 62 and the stop 63 of the elastic limiting member 6 are then pressed along the second axis X2 through the large hole 121. This causes the extension 62 and the stop 63 to bend relative to the fixed part 61 with the fulcrum 25 as the fulcrum. The stop 63 is then moved away from the large hole 121 and accommodated in the receiving groove 22. The stop 63 of the elastic limiting member 6 is no longer limited by the disc 11 along the second axis X2. The stepped part 32 of the screw 3 can slide from the small hole 122 into the large hole 121 along the second axis X2 (from the assembly state to the pre-assembly state). The positioning protrusion 27 slides into the wider end of the positioning groove 16. After that, the column 2 can be detached from the chassis 1 along the first axis X1.

[0071] In summary, after the screw fastener of the support device of this application is located in the through hole of the chassis and moves to a fixed point, the elastic limiting member can automatically lock into the through hole to prevent the screw fastener from returning along the original path, and can effectively prevent the column from detaching from the chassis before the screw is tightened.

Claims

1. A support device, characterized in that, The support device includes: A chassis includes a chassis body and at least one through hole, the through hole being disposed along a first axial direction in the chassis body, and having a large hole and a small hole arranged and communicating with each other along a second axial direction perpendicular to the first axial direction. A column includes a column body and at least one receiving groove formed by a recess in the column body; At least one screw fastener is screwed into the cylinder and corresponds to the receiving groove; and At least one elastic limiting member is clamped between the column and the screw and corresponds to the receiving groove; When the column is connected and matched with the chassis, it can switch between a pre-assembled state and an assembled state. In the pre-assembled state, the bolt passes through the large hole along the first axial direction, and the elastic limiting member is squeezed and deformed by the disc in the first axial direction and accommodated in the receiving groove. In the assembled state, the bolt passes through the small hole, and the elastic limiting member is accommodated in the large hole and limited by the disc in the second axial direction, thereby maintaining the assembled state.

2. The support device as described in claim 1, characterized in that, When transitioning from the pre-assembled state to the assembled state, the screw head slides from the large hole into the small hole along the second axial direction, causing the elastic limiting member to rebound without being squeezed by the disc in the first axial direction and move from the receiving groove to the large hole. At this time, the elastic limiting member is limited by the disc in the second axial direction, preventing the screw head from sliding from the small hole into the large hole.

3. The support device as described in claim 2, characterized in that, The elastic limiting member includes a through hole, a fixed part, a bent part and a stop part. The through hole is disposed in the fixed part and the fastener passes through it. The fixed part is sandwiched between the column and the fastener. The bent part extends outward from the fixed part and gradually moves away from the column. The stop part extends outward from the bent part.

4. The support device as described in claim 3, characterized in that, In the second axial direction, the length of the stop portion is slightly less than the length of the small hole, and when the elastic limiting member is not squeezed by the disc, the stop portion and the fixed portion have a discontinuity in the first axial direction, which is greater than the depth of the receiving groove recessed from the column, so that the stop portion is located outside the receiving groove, and the elastic limiting member is a metal spring.

5. The support device as described in claim 2, characterized in that, The elastic limiting member includes a through hole, a fixed part, an extension part and a stop part. The through hole is disposed in the fixed part and the fastener is inserted through it. The fixed part is sandwiched between the column and the fastener. The extension part extends outward from the fixed part along the second axis. The stop part extends outward from the extension part along the first axis.

6. The support device as described in claim 5, characterized in that, In the second axial direction, the length of the stop portion is slightly less than the length of the small hole, and when the elastic limiting member is not squeezed by the disc, the extension portion is located inside the receiving groove, and the stop portion is located outside the receiving groove.

7. The support device as described in claim 6, characterized in that, The column also includes a fulcrum and an inclined surface. The fulcrum protrudes from the column body and is located within the receiving groove. The inclined surface is formed on the column body and faces the receiving groove, and is adjacent to the fulcrum. In the pre-assembled state, the extension and the stop are bent relative to the fixed part with the fulcrum as the fulcrum and are adjacent to the inclined surface. In the assembled state, the extension and the stop are not bent relative to the fixed part and are away from the inclined surface. The elastic limiting member also includes a plurality of protrusions. The protrusions are spaced apart from each other on the fixed part and are at the same height as the fulcrum in the first axis. The elastic limiting member is made of polyoxymethylene (POM) material, and the stop is approximately an E-shaped rib.

8. The support device as described in any one of claims 1 to 7, characterized in that, The screw fastener includes a head, a stepped portion and a threaded portion connected in sequence. The column also includes a blind hole provided in the column body and communicating with the receiving groove. The threaded portion is screwed into the blind hole. The stepped portion and the head are exposed in the blind hole, and the stepped portion and the column body together clamp the elastic limiting member.

9. The support device as described in claim 8, characterized in that, The cross-sectional area of ​​the large hole is greater than the cross-sectional area of ​​the head, the cross-sectional area of ​​the head is greater than the cross-sectional area of ​​the stepped portion, and the cross-sectional area of ​​the stepped portion is greater than the cross-sectional area of ​​the threaded portion.

10. The support device as described in claim 9, characterized in that, The chassis also includes at least one limiting body, which corresponds to the perforation and extends outward from the disc body, and surrounds and defines the small hole. In the assembled state, the stepped portion is located in the small hole, and the head is limited by the limiting body in the first axis. The chassis also includes a receiving groove, which is recessed from the disc body and corresponds to the limiting body, and is connected to the perforation, for receiving the head.

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