Support device having interlocking means

Abstract

To provide a support device having an interlocking mechanism that allows for smooth switching between an deployed state and a retracted state. [Solution] A support device is provided comprising at least three support arms 201 pivotally supported around a pivot means 1 arranged along a central axis L, and at least three lower links 34 pivotally supported on each support arm 201 and an interlocking base 31 whose ends are located below the pivot means 1 and between the support arms 201, respectively, wherein the length direction of the lower links 34 does not pass through the central axis L when the upper and lower ends of each support arm 201 are extended away from the central axis L.

Description

[[Technical Field]]

[0001] The present invention relates to a support device, and in particular, to a support device having interlocking means. [[Background Art]]

[0002] Support devices are widely used, and are particularly suitable for being placed on the ground to install cameras, mobile phones, and surveying instruments, and can also support a person to stand on when provided with a seat plate.

[0003] The support device described in Patent Document 1 comprises a support base, a central column extending downward from the support base, three extending bases protruding outward from the support base, three support arms pivotally supported on the support base along the tangential direction of the support base from the upper ends thereof, three pivot shafts passing through the corresponding extending bases and the support arms along the tangential direction of the support base, a sleeve ring movably fitted over the central column, three links with both ends pivotally connected to the sleeve ring and the support arm respectively, and three pivot assemblies respectively disposed on the links. Each of the pivot assemblies comprises two pivot bases and two pivot pins. The pivot bases are respectively formed to protrude from the sleeve ring and the corresponding support arm. The pivot pins are inserted into both ends of the corresponding link and the pivot base respectively along the tangential direction of the sleeve ring.

[0004] In use, pushing the sleeve ring downward drives the links to expand, so that the lower ends of the support arms can be expanded outward to stand on the ground. By moving the sleeve ring, the links can simultaneously expand or retract the support arms. However, the upper end of each support arm is pivotally supported on the support base, and the area of the upper support surface is reduced in order to reduce the volume during retraction. Therefore, such a support device can only be used to support relatively small devices such as cameras and mobile phones, so an improvement is awaited.

[0005] In addition, when the support arm is deployed simultaneously by the movement of the sleeve ring and the interlocking of the link, the extension direction of the link faces the central axis of the central column, which limits the range of motion of the link relative to the sleeve ring. As a result, there is a problem in that the support arm cannot be deployed smoothly. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Chinese Utility Model Registration No. 220523748U Specification [Overview of the project] [Problems that the invention aims to solve]

[0007] In view of the above-mentioned problems, the present invention aims to provide a support device having interlocking means that solves the problems of the prior art. [Means for solving the problem]

[0008] To achieve the above objective, the present invention provides a support device having interlocking means, comprising a pivot means, a support means, and an interlocking means, The pivot means is arranged along a predetermined central axis, The support means has at least three support arms that are pivotally supported by the pivot means and can swing at a position around the central axis, each support arm having an upper pivot portion pivotally supported by the pivot means, a support portion on one side of the upper pivot portion, a bottom end opposite to the support portion and on the other side of the upper pivot portion, and a lower pivot portion positioned between the upper pivot portion and the bottom end, the support portion and the bottom end can be switched between a retracted state close to the central axis and an extended state away from the central axis, and the support portion together defines a support surface in the extended state away from the central axis. The interlocking mechanism comprises an interlocking base and at least three lower links. The interlocking base is located between the support arms and comprises a base body and at least three pivot members surrounding the central axis and connected to the base body, each of the lower links having a first end pivotally supported by a corresponding pivot member and a second end opposite to the first end along its length and pivotally supported by a corresponding lower pivot, and when the interlocking base moves relative to the pivot means along the central axis, the lower links can interlock and switch the support portion and bottom end of the support arm between the retracted state and the deployed state, and when the support portion and bottom end of the support arm are in the deployed state, the length of the lower link does not pass through the central axis, providing a support device with interlocking means. [Effects of the Invention]

[0009] The present invention, through its overall configuration, achieves the objective of smooth deployment by allowing the lower link to swing smoothly relative to the interlocking base and the support arm when the support portion and bottom end of the support arm are switched from a retracted state to an extended state. [Brief explanation of the drawing]

[0010] [Figure 1] This is a perspective view of a first embodiment of a support device having interlocking means of the present invention, showing that the first embodiment is applied to a support plate and a handle to constitute a walking stick chair, and that the three support arms are in the extended position. [Figure 2] This is an explanatory diagram showing the support arm of the first embodiment in its retracted position. [Figure 3] This is a side view showing the support arm of the first embodiment in the deployed position. [Figure 4] This is a partial side view showing the support arm of the first embodiment in the extended position. [Figure 5] This is a cross-sectional view corresponding to the line V-V in Figure 4. [Figure 6] This is a cross-sectional view corresponding to line VI-VI in Figure 5. [Figure 7] It is a cross-sectional view corresponding to the line VII-VII in FIG. 6. [Figure 8] It is a partial bottom view corresponding to FIG. 3. [Figure 9] It is a top view corresponding to FIG. 3. [Figure 10] It is a partial side view showing the interlocking means in the first embodiment. [Figure 11] It is an explanatory view similar to FIG. 7, showing a modified example of the first embodiment. [Figure 12] It is an explanatory view similar to FIG. 7, showing another modified example of the first embodiment. [Figure 13] It is a perspective view showing a second embodiment of the supporting device having the interlocking means according to the present invention. [Figure 14] It is a partially exploded explanatory view showing the second embodiment. [Figure 15] It is a perspective view showing the interlocking base in FIG. 14. [Figure 16] It is an explanatory view showing the unfolding operation of the second embodiment. [Figure 17] It is a perspective view showing a third embodiment of the supporting device having the interlocking means according to the present invention. [Figure 18] It is a partially exploded perspective explanatory view of the third embodiment. [Figure 19] It is a perspective view showing a fourth embodiment of the supporting device having the interlocking means according to the present invention. [Figure 20] It is a partially enlarged explanatory view of the fourth embodiment. [Figure 21] It is an explanatory view showing the stored state of the fourth embodiment. Description of Embodiments

[0011] To more clearly illustrate the object, technical means, and advantages of the embodiments of the present invention, the technical means in the embodiments of the present invention will be described clearly and in detail below, in conjunction with the accompanying drawings of the embodiments of the present invention. It will be clear that the embodiments described are some embodiments of the present invention, and not all embodiments. Typically, the components of the embodiments of the present invention depicted and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided below in the accompanying drawings does not constitute any limitation on the scope of protection of the present invention, but merely illustrates selected embodiments of the present invention.

[0012] Before explaining the present invention in detail, please note that in the following description, elements that perform the same role or function will be represented by the same number even if they do not have exactly the same configuration.

[0013] Furthermore, please note that in this specification, terms such as "up" and "down," which indicate the relative positional relationships of each component, are used for explanatory purposes, referring to the examples in the drawings, and are not absolute terms that limit the configuration of the present invention.

[0014] As shown in Figures 1 and 2, the first embodiment of the support device having interlocking means of the present invention is suitable for the installation of a support plate 8 and a handle 9. In this embodiment, the support plate 8 is a chair plate suitable for a person to sit on and is used as a walking stick chair. This embodiment can also be used as a support device for cameras, mobile phones, television monitors, etc., but is not limited to these.

[0015] As shown in Figures 3 and 4, the first embodiment comprises a pivot means 1, a support means 2, and an interlocking means 3.

[0016] As shown in Figures 4, 5, and 6, the pivot means 1 is arranged along a predetermined central axis L and is formed in a short cylindrical shape. The pivot means 1 has a top surface 11, a bottom surface 12 arranged on the opposite side of the top surface 11 along the central axis L, an outer peripheral surface 13 connected between the periphery of the top surface 11 and the bottom surface 12, three position limiting holes 14 that penetrate from the top surface 11 to the bottom surface 12 and are spaced apart from each other while surrounding the central axis L, three pivot shafts 17 that are spaced apart from each other while surrounding the central axis L and each passes through the corresponding position limiting hole 14, and a housing slot 16 that is recessed from the bottom surface 12 so as to open downward. Each position limiting hole 14 is defined by being surrounded by a hole surrounding surface 15. Each hole-enclosing surface 15 has a limiting surface portion 151 adjacent to the central axis L, and end surfaces 152 connected to both ends of the limiting surface portion 151 and facing each other.

[0017] Each support means 2 has at least three (three in this embodiment) support arms 201 that are pivotably supported on the pivot means 1 at positions around the central axis L, by being inserted into a corresponding position limiting hole 14 formed in the pivot means 1. Each support arm 201 has an upper pivot portion 21 pivotally supported on a pivot shaft 17 that passes through the corresponding position limiting hole 14, a support portion 22 located on one side of the upper pivot portion 21 and positioned above the top surface 11, a bottom end portion 23 on the other side of the upper pivot portion 21 opposite to the support portion 22, a lower pivot portion 24 positioned between the upper pivot portion 21 and the bottom end portion 23, and an arm surface 25 facing the limiting surface portion 151 of the corresponding position limiting hole 14. The upper pivot portion 21 of each support arm 201 can pivot between two end faces 152 at both ends adjacent to the limiting surface portion 151 of the corresponding position limiting hole 14. As shown in Figure 9, the lower pivot 24 of each support arm 201 has a rod-shaped axial pin member 241 that defines a pivot axis L3 perpendicular to the arm surface 25. The pivot axis L1 passing through each support arm 20 and the pivot shaft 17 of the pivot means 1 is substantially perpendicular to the central axis L and the corresponding arm surface 25 (see Figure 5). The support portion 22 and the bottom end portion 23 can be switched between a retracted state close to the central axis L and an extended state away from the central axis L. In the extended state away from the central axis L, the support portions 22 of each support arm 20 together define a support surface S (see Figure 3).

[0018] As shown in Figures 3, 6, and 7, the interlocking mechanism 3 is connected between the three support arms 201 and includes an interlocking base 31, an extension column 32, an elastic member 33, and at least three (three in this embodiment) lower links 34.

[0019] As shown in Figures 7, 8, and 10, the interlocking base 31 is located below the pivot means 1 between the three support arms 201 and comprises a base body 301 and at least three (three in this embodiment) pivot members 302 that surround the central axis L and are connected to the base body 301. The base body 301 has a roughly triangular shape with a contour perpendicular to the central axis L and has at least three (three in this embodiment) base sides 311 that face the arm surfaces 25, i.e., these base sides 311 surround the central axis L. Each pivot member 302 has a pivot pin 312 that extends outward from the base body 301 along a corresponding pivot axis L2 and passes through a corresponding lower link 34, and a stopper portion 313 that is L-shaped and connected to the outer end of the pivot pin 312. As shown in Figure 7, in this embodiment, the extension of the pivot axis L2 corresponding to each pivot member 302 does not pass through the central axis L. In other variations, for example, as shown in Figure 11, the shape of the contour of the base body 301 perpendicular to the central axis L is generally triangular, and the extension of the pivot axis L2 passes through the central axis L. Also, as shown in Figure 12, the shape of the contour of the base body 301 perpendicular to the central axis L is generally rectangular, and the extension of the pivot axis L2 passes through the central axis L.

[0020] As shown in Figure 3, the extension column 32 extends from the interlocking base 31 along the central axis L toward the support plate 8. Specifically, its base is connected to the interlocking base 31 and its tip is connected to the support plate 8. The extension column 32 can be moved by pulling the support plate 8.

[0021] The elastic member 33 is externally fitted to the extension column 32 such that its upper end is received in a housing slot 16 in the pivot means 1 and abuts against the pivot means 1, and its lower end abuts against the interlocking base 31 and can be compressed by the relative movement between the pivot means 1 and the interlocking base 31, thereby always providing a biasing force to the interlocking base 31 and the pivot means 1 that keeps the interlocking base 31 away from the pivot means 1.

[0022] As shown in Figures 7, 8, and 9, each lower link 34 has a first end 341 pivotally supported on a corresponding pivot member 302, and a second end 342 that is opposite to the first end 341 along the longitudinal direction X1 and pivotally supported on a corresponding lower pivot 24. As shown in Figure 10, the first end 341 has a first pivot hole 343 through which the corresponding pivot member 302 passes, and the first pivot hole 343 has an axial hole area 344 whose contour corresponds to the pivot pin 312, and a hook-shaped area 345 that communicates with the axial hole area 344 and whose contour corresponds to the stopper portion 313. As shown in Figure 3, the second end 342 has a second pivot hole 346 pivotally supported on the axial pin member 241.

[0023] When the interlocking base 31 moves relative to the pivot means 1 along the central axis L, the lower link 34 interlocks with the support portion 22 and bottom end portion 23 of the support arm 201, allowing it to switch between a retracted state and an extended state. When the support portion 22 and bottom end portion 23 of the support arm 201 are in the extended state, the length X1 of the lower link 34 does not pass through the central axis L.

[0024] To facilitate understanding of the effects produced by the interaction of the aforementioned components of this invention, the technical means used, and the expected effects achieved, the following explanation will be provided, which will deepen the concrete understanding of this invention.

[0025] As shown in Figures 3, 4, 6, and 8, the support arm 201 can swing between a retracted position (see Figure 4) and an extended position (see Figure 3) relative to the pivot means 1. In the retracted position, as shown in Figures 4 and 6, the support portion 22 of the support arm 201 is close to the central axis L, the bottom end portion 23 of the support arm 201 is close to the central axis L, the interlocking base 31 is close to the pivot means 1 in the direction of the central axis L, and the longitudinal direction X1 of the lower link 34 corresponding to each support arm 201 extends substantially along the direction of the central axis L.

[0026] In the deployed position, as shown in Figures 3 and 8, the support portion 22 of the support arm 201 is separated from the central axis L and together defines a support surface S, the bottom end 23 of the support arm 201 is separated from the central axis L, the interlocking base 31 is separated from the pivot means 1 in the direction of the central axis L, and each lower link 34 is deployed substantially horizontally from one end pivotally supported by a corresponding pivot member 302 of the base body 301 to which the extension column 32 is fixed, to the other end pivotally supported by the corresponding support arm 201. The support surface S is used to support the support plate 8, and the upper end of the extension column 32 is connected to the support plate 8.

[0027] In this embodiment, each pivot axis L1 is substantially perpendicular to the central axis L and the corresponding arm surface 25 (see Figure 5). When the support arm 201 is extended, the support parts 22 are offset from each other, do not interfere with each other, and can together define a relatively large support surface S. On the other hand, in the conventional technology, the support arm is pivotally supported at its upper end to a support base, and the volume of the support base and the area of ​​the support surface at its upper end are relatively small. In addition, in the conventional technology, each pivot pin passes through the corresponding support arm and pivot base along the tangential direction of the support base, and if the upper end of each support arm protrudes from the top surface of the support base, the support arms interfere with each other above the support base, and the effects of this embodiment cannot be achieved. Furthermore, in the conventional technology, the extension base has a sleeve ring and support arm that protrude outward, and the pivot pin passes through the link and pivot base along the tangential direction of the pivot base. In this embodiment, each pivot axis L2 is perpendicular to the central axis L and the corresponding base side surface 311, and each pivot axis L3 is perpendicular to the corresponding arm surface 25. In other words, each pivot axis L2 and each pivot axis L3 pass through each lower link 34 along the thickness direction of each lower link 34. This allows each lower link 34 to shift away from the corresponding pivot member 302 formed on the base body 301 in response to the swinging of each support arm 201, and in the deployed state, it can provide a support effect between the base body 301 and each support arm 201, improving the structural strength in the deployed position. Furthermore, in this embodiment, the configuration corresponding to the pivot base in the prior art is omitted, and the distance between the interlocking base 31 and each support arm 201 in the stored position can be shortened. For this reason, the present invention can simplify the structure and further reduce the volume in the stored position. In addition, with each pivot axis L2 perpendicular to the central axis L and the corresponding base side surface 311, each lower link 34 can swing at a position closer to the interlocking base 31. For this reason, in this embodiment, the thickness and width of the lower link 34 can be reduced, further reducing its volume and weight.

[0028] In this embodiment, the extension column 32 extends upward from the interlocking base 31 and connects to the support plate 8 on the support surface S. By pulling the support plate 8, the extension column 32 is driven in conjunction with the interlocking base 31 to drive vertical movement, while the lower link 34 is driven to simultaneously swing, thereby driving the simultaneous deployment or retraction of the support arms 201, making it more convenient. Furthermore, even when it is necessary to operate the support arms 201 to deploy them, by operating only one of the three support arms 201 to swing outward relative to the pivot means 1, the lower link 34 pulls the interlocking base 31 downward in response to this swing, thereby driving the other two lower links 34 to swing. As each support arm 201 and each lower link 34 swing relative to each other like scissors, all three support arms 201 can be swung from the retracted position to the deployed position. In the retracted position, the elastic member 33 of the interlocking mechanism 3 is compressed by the relative proximity of the pivot mechanism 1 and the interlocking base 31, accumulating energy. Therefore, even when only the support plate 8 or one of the three support arms 201 is moved, the accumulated energy is released, pushing the interlocking base 31 downwards and deploying each lower link 34. This provides support for swinging each support arm 201, to which each lower link 34 is pivotally supported, from the retracted position to the deployed position. In addition, in other variations of the present invention, even if the extension column 32, elastic member 33, and storage slot 16 are omitted, the effect of swinging all three support arms 201 from the retracted position to the deployed position when only one of the three support arms 201 is moved can still be achieved.

[0029] In this invention, each pivot axis L1 is substantially perpendicular to the central axis L and the corresponding arm surface 25, so that when the three support arms 201 of the support section 22 are deployed, they can define a relatively large support surface S, and thus can hold a support plate 8 (for example, the chair plate shown in Figure 1) that is larger in volume and heavier. In addition, in this invention, each pivot axis L2 is perpendicular to the central axis L and the corresponding base side surface 311, and each pivot axis L3 is perpendicular to the corresponding arm surface 25, so that each lower link 34 can swing in accordance with each support arm 201, and when the support arms 201 are deployed, each support arm 201 is supported from the inside, improving the overall structural strength, thus the objective of this invention is reliably achieved.

[0030] Furthermore, as shown in Figures 13 and 14, the second embodiment of the support device having the interlocking means of the present invention also includes the same pivot means 1, support means 2, and interlocking means 3 as the first embodiment, so only the differences will be explained below.

[0031] In this second embodiment, the lower pivot portion 24 of each support arm 201 of the support means 2 is connected to the shaft pin member 241 and further includes a limiting plate 242 configured to protrude from the shaft pin member 241.

[0032] In this second embodiment, the interlocking mechanism 3 includes an interlocking base 31, an extension column 32, an elastic member 33, and three lower links 34.

[0033] This interlocking base 31 has a base body 301 and three pivot members 302 that are arranged to surround the central axis L and connected to the base body 301.

[0034] As shown in Figure 15, each pivot pin 312 of each pivot member 302 has a connecting end 314 connected to the corresponding base side surface 311, an extending portion 315 connected to the connecting end 314, specifically extending perpendicularly from the tip of the connecting end 314, and a stopper portion 313 connected to the tip of the extending portion 315 that extends from the connecting end 314. Furthermore, the extending portion 315 is formed in a shape that widens from the portion connected to the connecting end 314 to the portion connected to the stopper portion 313, and a pair of guide slopes 318 adjacent to the stopper portion 313 are formed on both sides in the longitudinal direction thereof. Furthermore, the connecting end 314 of each pivot member 302 is formed in a cylindrical shape that protrudes perpendicularly to the base side surface 311, the extending portion 315 extends from the connecting end 314 in a direction approximately perpendicular to the extension direction of the connecting end 314, and the stopper portion 313 is formed at the tip of the extending portion 315 that extends from the connecting end 314 in a direction approximately perpendicular to the extension direction of the extending portion 315. In other words, the extending portion 315 and the connecting end 314 are connected in an L-shape, and the stopper portion 313 and the extending portion 315 are connected in an L-shape.

[0035] Each lower link 34 has a first pivot hole 343 which is elongated and has a roughly fan-shaped shaft hole area 344 and an arch-shaped hook-shaped area 345 on the opposite side of the shaft hole area 344. The opening width of the hook-shaped area 345 is equal to or greater than the width of the connecting end 314, and the longest part of the opening width of the shaft hole area 344 is equal to or greater than the width of the extension 315. A second pivot hole 346 is formed at the second end 342 of each lower link 34, and the opening width of the second pivot hole 346 is shorter than the width of the limiting plate 242.

[0036] As the interlocking base 31 moves relative to the pivot means 1 along the central axis L, the lower links 34 swing in conjunction with the movement of the interlocking base 31 relative to the interlocking base 31 and the corresponding support arm 201, and the first end 341 of each lower link 34 swings along the extension portion 315 while moving between the stopper portion 313 and the connecting end 314. The second end 342 of each lower link 34 swings relative to the shaft pin member 241 on the corresponding lower pivot 24 and is restricted by the corresponding limiting plate 242 so that it does not slip off the shaft pin member 241. Simultaneously, as shown in Figures 14 and 16, from the left-hand diagram to the right-hand diagram, the movement of the lower link 34 and the interlocking base 31, which are linked to each support arm 201, in response to the swinging of each support arm 201 surrounding the central axis L causes the interlocking base 31 to rotate about the central axis L. This makes the swinging of the support arm 201 relative to the pivot means 1 smoother.

[0037] When the support arm 201 swings toward the central axis L, guide slopes 318 are formed on the extended portion 315 of each pivot member 302, and the portion of the shaft hole area 344 of the first pivot hole 343 of the lower link 34 is guided by the guide slopes 318, causing the interlocking base 31 to rotate back to its original position about the central axis L.

[0038] By using the overall structure of this second embodiment, the same objectives and effects as those of the first embodiment can be achieved.

[0039] Furthermore, as shown in Figures 17 and 18, the difference between the third embodiment and the second embodiment of the support device having the interlocking means of the present invention is that the base body 301 of the interlocking means 3 has an annular circumferential surface 316 surrounding the central axis L and at least three lugs 317 connected to the annular circumferential surface 316, and the connecting end 314 of each pivot member 302 is formed in a rod shape and connected to the lugs 317. The stopper portion 313 and the connecting end 314 of each pivot member 302 are positioned at opposite ends of a center line L4 substantially perpendicular to the central axis L, and the stopper portion 313 is formed in a disc shape through which the center line L4 passes diagonally. The first pivot hole 343 of each lower link 34 is formed in a circular shape, and the opening width of the first pivot hole 343 is longer than the width of the connecting end 314 and shorter than the width of the stopper portion 313. The second pivot hole 346 of each lower link 34 is circular in diameter shorter than the limiting plate 242.

[0040] By using the overall structure of this third embodiment, the same objectives and effects as those of the above embodiments can be achieved.

[0041] Furthermore, as shown in Figures 19 and 20, the difference between the fourth and third embodiments of the support device having interlocking means of the present invention is that each support arm 201 of the support means 2 has an upper support pipe 26, a lower support pipe 27 connected in a nested manner to communicate with the upper support pipe 26, and a cover sleeve 28 that is movably connected in a nested manner to the lower support pipe 27. Each lower pivot 24 is positioned on the corresponding cover sleeve 28, and the second end 342 of each lower link 34 is pivotally supported on the corresponding cover sleeve 28. Each lower support pipe 27 has at least one stopper block, and in this embodiment, it has stopper blocks 271 and 272, so that the cover sleeve 28 attached to the lower support pipe 27 can abut against these two stopper blocks 271 and 272. Furthermore, each lower support pipe 27 is extendable and retractable relative to the corresponding upper support pipe 26 through a nested connection, and is configured to be positioned relative to the corresponding upper support pipe 26 when each lower support pipe 27 extends from the corresponding upper support pipe 26. Prior art can be used as the means for this positioning; for example, corresponding engaging members and holes (since this is a prior art positioning device, explanation and illustration are omitted) can be used.

[0042] When one support arm 201 swings from the retracted position to the deployed position, or when one support arm 201 swings from the deployed position to the retracted position, the swing of the lower link 34 drives the other support arms 201 to simultaneously deploy or retract. Each lower link 34 also moves the corresponding cover sleeve 28 appropriately relative to the corresponding support arm 201, and when each cover sleeve 28 slides up and down, it is prevented and positioned by the upper stopper block 271 and the lower stopper block 272, respectively. Furthermore, when the support arm 201 is fully deployed, each cover sleeve 28 is prevented and positioned by the upper stopper block 271.

[0043] Furthermore, as shown in Figure 21, when the support arm 201 is in the stowed position, it is possible to operate each lower support pipe 27 to be retracted into the corresponding upper support pipe 26, and in the process of this operation, the stopper blocks 271 and 272 of each lower support pipe 27 are forcibly passed through the corresponding cover sleeve 28.

[0044] In summary, the support device having the interlocking means of the present invention has a simple overall structure, can form a relatively large support area, and allows for smooth deployment or retraction of the support arm 201, thus reliably achieving the objectives of the present invention.

[0045] Although embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications are possible without departing from its essence. [Explanation of Symbols]

[0046] 1 Pivotal means 11 Top surface 12 Bottom surface 13 Outer surface 14 Position limiting holes 15 Hole surrounding surface 151 Restriction surface section 152 End section 16 storage slots 17 Pivot 2. Support methods 201 Support Arm 21 Jorin Branch 22 Support part 23 Bottom end 24 Shimoki Branch 241 Axle pin member 242 Restriction Plate 25 Arm surface 26 Upper support pipe 27 Lower support pipe 271 Stopper Block 272 Stopper Block 28 cover sleeves 3. Interlocking means 301 Base 302 Pivot member 31 Interlocking unit 311 Side of the base 312 Pivot pin 313 Stopper section 316 Circumferential surface 317 Mimikin 32 Extension column 33 Elastic members 34. See link below. 341 First end 342 Second end 343 First pivot hole 344 Shaft hole area 345 Hook-shaped area 346 Second pivot hole 8 Support plate 9. Handle L center axis L1 Oscillating axis L2 pivot axis L3 pivot axis S support surface

Claims

1. A support device having interlocking means, comprising a pivot means, a support means, and an interlocking means, The pivot means is arranged along a predetermined central axis, The support means has at least three support arms that are pivotally supported by the pivot means and can swing at a position around the central axis, each support arm having an upper pivot portion pivotally supported by the pivot means, a support portion on one side of the upper pivot portion, a bottom end opposite to the support portion and on the other side of the upper pivot portion, and a lower pivot portion positioned between the upper pivot portion and the bottom end, the support portion and the bottom end can be switched between a retracted state close to the central axis and an extended state away from the central axis, and the support portion together defines a support surface in the extended state away from the central axis. The interlocking mechanism comprises an interlocking base and at least three lower links. The interlocking base is located between the support arms, and the interlocking base comprises a base body and at least three pivot members surrounding the central axis and connected to the base body, and each of the lower links has a first end pivotally supported by a corresponding pivot member and a second end opposite to the first end along its length and pivotally supported by a corresponding lower pivot, and when the interlocking base moves relative to the pivot means along the central axis, the lower links can interlock and switch the support portion and the bottom end of the support arm between the retracted state and the deployed state, and when the support portion and the bottom end of the support arm are in the deployed state, the length of the lower link does not pass through the central axis. Each of the pivot members of the interlocking means has a connecting end connected to the base body, an extension part connected to the connecting end, and a stopper part connected to the extension part. A support device having an interlocking mechanism, wherein when the interlocking base moves along the central axis relative to the pivot mechanism, the lower link is interlocked and oscillates relative to the interlocking base and the corresponding support arm, and the first end of each lower link moves along the extension between the stopper portion and the connecting end, and the second end of each lower link oscillates relative to the corresponding lower pivot portion.

2. A support device having the interlocking means according to claim 1, wherein the base body of the interlocking means has at least three base sides surrounding the central axis, the connecting end of each pivot member is formed in a rod shape and connected to the corresponding base side, the extension portion and the connecting end are connected in an L-shape, the stopper portion and the extension portion are connected in an L-shape, and the first end of each lower link has a first pivot hole whose opening width is longer than the width of the connecting end and the extension portion.

3. The support device having the interlocking means according to claim 2, wherein the extension portion of each pivot member of the interlocking means is formed in a shape that widens towards the portion connected to the stopper portion from the portion connected to the connecting end, and has a pair of guide slopes adjacent to the stopper portion on both sides in the longitudinal direction thereof, and the first pivot hole of each lower link is elongated, and has a substantially fan-shaped shaft hole area and an arch-shaped hook-shaped area on the opposite side of the shaft hole area, and the opening width of the hook-shaped area is equal to or greater than the width of the connecting end, and the longest part of the opening width of the shaft hole area is equal to or greater than the width of the extension portion.

4. The support device having the interlocking means according to claim 1, wherein the base body of each of the pivot members of the interlocking means has an annular circumferential surface surrounding the central axis and at least three lugs connected to the annular circumferential surface, the connecting end of each pivot member is formed in a rod shape and connected to the lugs, the stopper portion and the connecting end are respectively located at opposite ends of a center line substantially perpendicular to the central axis, and the stopper portion is formed so that the center line passes diagonally through it.

5. A support device having the interlocking means according to claim 4, wherein each of the lower links of the interlocking means has a circular first pivot hole, and the opening width of the first pivot hole is longer than the width of the connecting end.

6. The support device having the interlocking means according to claim 2 or claim 4, wherein each of the support arms of the support means has a lower pivot point connected to the corresponding support arm and comprising a rod-shaped shaft pin member and a limiting plate connected to the shaft pin member and configured to protrude from the shaft pin member, and the second end of each lower link has a second pivot hole whose opening width is longer than the outer diameter of the shaft pin member, and the opening width of the second pivot hole is shorter than the width of the limiting plate.

7. A support device having an interlocking means, comprising a pivot means, a support means, and an interlocking means, The pivot means is arranged along a predetermined central axis, The support means has at least three support arms that are pivotally supported by the pivot means and can swing at a position around the central axis, each support arm having an upper pivot portion pivotally supported by the pivot means, a support portion on one side of the upper pivot portion, a bottom end opposite to the support portion and on the other side of the upper pivot portion, and a lower pivot portion positioned between the upper pivot portion and the bottom end, the support portion and the bottom end can be switched between a retracted state close to the central axis and an extended state away from the central axis, and the support portion together defines a support surface in the extended state away from the central axis. The interlocking mechanism comprises an interlocking base and at least three lower links. The interlocking base is located between the support arms, and the interlocking base comprises a base body and at least three pivot members surrounding the central axis and connected to the base body, and each of the lower links has a first end pivotally supported by a corresponding pivot member and a second end opposite to the first end along its length and pivotally supported by a corresponding lower pivot, and when the interlocking base moves relative to the pivot means along the central axis, the lower links can interlock and switch the support portion and the bottom end of the support arm between the retracted state and the deployed state, and when the support portion and the bottom end of the support arm are in the deployed state, the length of the lower link does not pass through the central axis. A support device having an interlocking mechanism, wherein the support surface is suitable for mounting a support plate, the interlocking mechanism further comprises an extension column extending from the interlocking base along the central axis toward the support plate, the upper end of the extension column is connected to the support plate, and when the support plate is moved, the interlocking mechanism operates in conjunction to simultaneously extend or retract the support arm.

8. The support device having the interlocking means according to claim 7, further comprising an elastic member that is externally fitted to the extension column in a compressible manner and so as to abut against the pivot means and the interlocking base, respectively.

9. The support device having the interlocking means according to claim 8, wherein the pivot means further has a receiving slot that opens downward and is used to receive the upper end of the elastic member.

10. A support device having an interlocking means, comprising a pivot means, a support means, and an interlocking means, The pivot means is arranged along a predetermined central axis, The support means has at least three support arms that are pivotally supported by the pivot means and can swing at a position around the central axis, each support arm having an upper pivot portion pivotally supported by the pivot means, a support portion on one side of the upper pivot portion, a bottom end opposite to the support portion and on the other side of the upper pivot portion, and a lower pivot portion positioned between the upper pivot portion and the bottom end, the support portion and the bottom end can be switched between a retracted state close to the central axis and an extended state away from the central axis, and the support portion together defines a support surface in the extended state away from the central axis. The interlocking mechanism comprises an interlocking base and at least three lower links. The interlocking base is located between the support arms, and the interlocking base comprises a base body and at least three pivot members surrounding the central axis and connected to the base body, and each of the lower links has a first end pivotally supported by a corresponding pivot member and a second end opposite to the first end along its length and pivotally supported by a corresponding lower pivot, and when the interlocking base moves relative to the pivot means along the central axis, the lower links can interlock and switch the support portion and the bottom end of the support arm between the retracted state and the deployed state, and when the support portion and the bottom end of the support arm are in the deployed state, the length of the lower link does not pass through the central axis. A support device having interlocking means, wherein each of the support arms of the support means has an upper support pipe, a lower support pipe connected to the upper support pipe in a nested manner, and a cover sleeve movably connected to the lower support pipe in a nested manner, each of the lower pivots is positioned on the corresponding cover sleeve, and the second end of each of the lower links is pivotally supported on the corresponding cover sleeve, and each of the lower support pipes is extendable and retractable relative to the corresponding upper support pipe by the nested connection, and each of the lower support pipes is configured to be positioned relative to the corresponding upper support pipe when extending from the corresponding upper support pipe.

11. A support device having the interlocking means according to claim 10, wherein each of the lower support pipes of the support means has at least one stopper block, and the stopper block is configured to abut against the cover sleeve which is nested and connected to the lower support pipe.

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