Supporting frame, lamp holder, photographing telescopic frame, musical instrument frame and easel

Abstract

The utility model discloses a support frame, which comprises a central support, the telescopic sleeve is connected with the central bracket in a manner of moving up and down in the axial direction; the at least two movable pipes are movably connected to the periphery of the central bracket; one end of the connecting rod is movably connected with the movable pipe, the joint of the two is a first connecting point, the other end of the connecting rod is movably connected with the telescopic sleeve, and the joint of the two is a second connecting point; the connecting line of the first connecting point and the second connecting point is obliquely arranged relative to the center axis of the telescopic sleeve, and the distance between the first connecting point and the center axis of the telescopic sleeve is larger than that between the second connecting point and the center axis of the telescopic sleeve. The utility model further discloses a lamp holder, a photographing telescopic frame, a musical instrument frame and an easel. The center support is movably connected with the telescopic sleeve, when the center support is lifted upwards, the top ends of the movable pipes move upwards along with the center support, the lower ends of all the movable pipes automatically draw close to the center of the telescopic sleeve, automatic folding operation of the supporting frame is achieved, and at the moment, the supporting frame is convenient to transfer.

Description

Technical Field

[0001] The utility model belongs to the technical field of supporting structures, in particular to a supporting frame and a lamp stand, a photographic telescopic stand, a musical instrument stand and an easel. Background Art

[0002] Chinese patent CN102734765B discloses a tripod support structure and a lamp using the tripod support structure, which moves the movable ring along the axial direction of the slide rod, and drives the support legs to open or close through the linkage rod, so that the support legs can be stably and firmly supported on the ground and at a certain height to support the lamp. However, when the lamp does not need to be supported, the position of the movable ring on the slide rod needs to be adjusted, which is relatively cumbersome to operate, and the switching between the closed and extended support states cannot be performed automatically. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a support frame and a lamp stand, a photographic telescopic stand, a musical instrument stand, and an easel, which can be automatically folded and unfolded, and are convenient for transfer and use.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a support frame, comprising:

[0005] Center bracket;

[0006] A telescopic sleeve, connected to the central support so as to be axially movable up and down;

[0007] at least two movable tubes movably connected to the outer periphery of the central support;

[0008] A connecting rod, one end of which is movably connected to the movable tube, where the two are connected is a first connection point, and the other end of the connecting rod is movably connected to the telescopic sleeve, where the two are connected is a second connection point;

[0009] The connecting line of the first connection point and the second connection point is inclined relative to the central axis of the telescopic sleeve, and the distance between the first connection point and the central axis of the telescopic sleeve is greater than the distance between the second connection point and the central axis of the telescopic sleeve.

[0010] Furthermore, when the movable tube and the connecting rod are retracted close to the central support, the horizontal height at which the bottom end of the movable tube is located is above the horizontal height at which the bottom end of the telescopic sleeve is located.

[0011] Furthermore, the movable tube is arranged obliquely, and extends obliquely downward and outward from one end connected to the central support.

[0012] Furthermore, a first rotating shaft is radially provided at the determined height position of the movable tube, and the end of the connecting rod is rotatably connected to the first rotating shaft; a lower adapter is provided on the outer wall of the bottom end of the telescopic sleeve, and the other end of the connecting rod is rotatably connected to the second rotating shaft of the lower adapter.

[0013] Furthermore, the connecting rod is a double connecting rod structure, which is rotatably connected to both ends of the first rotating shaft and the second rotating shaft respectively, and the double connecting rod, the first rotating shaft and the second rotating shaft form a square frame shape.

[0014] Furthermore, a neck ring is sleeved on the outer wall of the movable tube, and the first rotating shaft passes through the outer wall of the neck ring and is connected to the connecting rod.

[0015] Furthermore, a single-side radial width of the neck ring is greater than a distance between the second rotation axis and an outer wall of the telescopic sleeve.

[0016] Furthermore, the determined height position of the movable tube is 1 / 3-2 / 3 of the height of the movable tube from bottom to top.

[0017] Furthermore, an upper adapter is provided on the outer wall of the central support, and the top end of the movable tube is rotatably connected to the third rotation axis of the upper adapter; the upper adapter and the lower adapter are arranged parallel and opposite to each other.

[0018] Furthermore, the upper adapter is movably connected to the center bracket and also includes a locking structure for locking the upper adapter and the center bracket.

[0019] Furthermore, the number of the movable tubes is three, and they are evenly spaced along the outer circumference of the central support.

[0020] Furthermore, the portion of the movable tube below the first connection point, the connecting rod, the adjacent connecting rod, and the portion of the adjacent movable tube below the first connection point are in an M shape.

[0021] Furthermore, the central support 1 includes a plurality of branch pipes which are connected inside and outside.

[0022] The utility model also discloses a lamp stand, comprising the supporting frame as described above, and a lamp holder connecting unit arranged on the top end of the supporting frame.

[0023] The utility model also discloses a photographic telescopic frame, comprising the supporting frame as described above, and a photographic device connecting unit arranged on the top of the supporting frame.

[0024] The utility model also discloses a musical instrument stand, comprising the supporting frame as described above, and a connecting unit arranged on the top of the supporting frame.

[0025] The utility model also discloses an easel, comprising the supporting frame as described above, and a drawing board device arranged on the top of the supporting frame.

[0026] The beneficial effects of the utility model are as follows: 1) the central support and the telescopic sleeve are movably connected. When the central support is lifted upward, the top of the movable tube moves upward accordingly. Under the pulling of the connecting rod and the gravity of the movable tube, the lower ends of all the movable tubes automatically move toward the center of the telescopic sleeve, thereby realizing the automatic folding operation of the support frame, which is convenient for the transfer of the support frame; 2) when the bottom end of the telescopic sleeve is supported on the ground, the connecting rod can automatically push the movable tube to expand outward, so that the bottom ends of the movable tube and the bottom ends of the telescopic sleeve are in contact with the ground, and the support frame is in a stable and expanded state; 3) when the central support is lifted upward, the connecting rod can automatically push the movable tube to expand outward, so that the bottom ends of the movable tube and the telescopic sleeve are in contact with the ground, and the support frame is in a stable and expanded state; 4) when the central support is lifted upward, the connecting rod can automatically push the movable tube to expand outward, so that the bottom ends of the movable tube and the telescopic sleeve are in contact with the ground, and the support frame is in a stable and expanded state; 5) when the central support is lifted upward, the connecting rod can automatically push the movable tube to expand outward, so that the bottom ends of the movable tube and the telescopic sleeve are in contact with the ground, and the support frame is in a stable and expanded state; 6) when the central support is lifted upward, the connecting rod can automatically push the movable tube to expand outward, so that the bottom ends of the movable tube and the telescopic sleeve are in contact with the ground, and the support frame is in a stable and expanded state; 7) when the central support is lifted upward, the connecting rod can automatically push the movable tube to expand outward, so that the bottom ends of the movable tube and the telescopic sleeve are in contact with the ground, and the support frame is in a stable and expanded state; 8) when the central support is lifted upward, the connecting rod can automatically push the movable tube to expand outward, so that the bottom ends of the movable tube and the telescopic sleeve are in contact with the ground, and The support frame can be automatically switched between the folded state and the unfolded state by simply lifting it up, which is simple and convenient to operate; 4) The locking structure can be used to adjust the connection position between the central bracket and the upper adapter, so as to facilitate the adjustment of the distance between the lower ends of each movable tube when the support frame is in the unfolded state, and then adjust the overall height of the support frame in the unfolded state to adapt to different usage scenarios; 5) One end of the connecting rod is rotatably connected to the middle part of the movable tube, and the other end of the connecting rod is connected to the bottom end of the telescopic sleeve, so that the connecting rod can have a larger length, thereby increasing the adjustment range of the unfolding amplitude of the support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the support frame provided by the utility model in a folded state.

[0028] Figure 2 A schematic diagram of the three-dimensional structure of the support frame provided by the utility model during the folding process Figure 1 .

[0029] Figure 3 A schematic diagram of the three-dimensional structure of the support frame provided by the utility model during the folding process Figure 2 .

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the support frame provided by the utility model in the unfolded state.

[0031] Figure 5 This is a front view of the support frame provided by the utility model in the unfolded state.

[0032] Figure 6 for Figure 5 A magnified view of the structure in Figure 2.

[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of the support frame provided by the utility model during the unfolding process.

[0034] Figure 8 A partial cross-sectional view of the support frame provided by the utility model during the unfolding process.

[0035] Fig. 9 for Figure 8 Enlarged view of the structure at B in the figure.

[0036] Fig.10 A schematic diagram of the local structure of the support frame locking structure provided by the utility model Figure 1 .

[0037] Fig.11 A schematic diagram of the local structure of the support frame locking structure provided by the utility model Figure 2 .

[0038] Fig.12 This is a partial three-dimensional structural schematic diagram of the support frame provided by the utility model in the unfolded state.

[0039] Fig.13 for Fig.12 Enlarged view of the structure at position C in the figure.

[0040] Among them, 1-center bracket, 11-upper adapter, 12-third rotating axis, 13-branch pipe, 2-telescopic sleeve, 21-lower adapter, 22-second rotating axis, 3-movable tube, 31-first rotating axis, 32-neck ring, 4-connecting rod, 51-first connecting point, 52-second connecting point, 6-locking structure, 61-elastic locking ring, 62-knob, 63-threaded connection section. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0042] Embodiment 1

[0043] like Figure 1-Figure 8 As shown, a support frame includes a central support 1, a telescopic sleeve 2 movably connected to the central support 1 axially up and down, at least two movable tubes 3 movably connected to the outer periphery of the central support 1, and a connecting rod 4. One end of the connecting rod 4 is movably connected to the movable tube 3, and the connection point between the two is a first connection point 51, and the other end of the connecting rod 4 is movably connected to the telescopic sleeve 2, and the connection point between the two is a second connection point 52.

[0044] The connecting line of the first connection point 51 and the second connection point 52 is inclined relative to the central axis of the telescopic sleeve 2, and the distance between the first connection point 51 and the central axis of the telescopic sleeve 2 is greater than the distance between the second connection point 52 and the central axis of the telescopic sleeve 2. Figure 1As shown in the figure as an example, the central axis of the telescopic sleeve 2 is L1, and the line connecting the first connection point 51 and the second connection point 52 is L2, then L1 extends vertically, and L2 extends obliquely, and it extends obliquely from top to bottom in the direction close to L1. Since the first connection point 51 is located above the second connection point 52, the distance between the first connection point 51 and the central axis of the telescopic sleeve 2 is greater than the distance between the second connection point 52 and the central axis of the telescopic sleeve 2.

[0045] The central support 1 and the telescopic sleeve 2 are concentrically and coaxially connected inside and outside, and the two can move up and down relative to each other, so that their total length can be lengthened or shortened, at which time the movable tube 3 moves closer to the telescopic sleeve 2 or the movable tube 3 is extended in the direction away from the telescopic sleeve 2. When the movable tube 3 and the connecting rod 4 are retracted close to the central support 1, the horizontal height of the bottom end of the movable tube 3 is located above the horizontal height of the bottom end of the telescopic sleeve 2. Figure 1 As shown in the figure, the bottom end of the movable tube 3 is located at the level of the H1 line, the bottom end of the telescopic sleeve 2 is located at the level of the H2 line, and the H1 line is located above the H2 line.

[0046] The support frame of the utility model, in the folded state, Figure 1 As shown, only the bottom of the telescopic sleeve 2 is in contact with the ground, etc. At this time, all the movable tubes 3 are folded outside the telescopic sleeve 2 and do not contact the ground, which facilitates the transfer of the support frame; in the unfolded state, as shown Figure 4 As shown, the bottom of the telescopic sleeve 2 and the bottom of the movable tube 3 are both in contact with the ground, and the support frame can be stably supported on the ground. Since the telescopic sleeve 2 and the central support 1 are movably connected, when the user lifts the central support 1 upward, the upper ends of all the movable tubes 3 move upward with the central support 1, and the total length of the central support 1 and the telescopic sleeve 2 increases. Under the pulling force of the connecting rod 4 and the gravity of the movable tube 3, the lower ends of all the movable tubes 3 move toward the center of the telescopic sleeve 2, realizing the folding operation of the support frame.

[0047] When it is necessary to switch from the folded state to the expanded state, the bottom end of the telescopic sleeve 2 is supported on the ground. Since the connecting rod 4 is inclined and the center bracket 1 is retracted downward into the telescopic sleeve 2, the connecting rod 4 can automatically push the movable tube 3 to expand outward, so that the support frame is expanded to the bottom end of the movable tube 3 and the bottom end of the telescopic sleeve 2 are in contact with the ground.

[0048] The first connection point 51 and the second connection point 52 do not refer to a specific point, but may be two points or even a surface. For example, when the connecting rod 4 is a double-connecting rod structure, it has at least two connection points with the movable tube 3 and the telescopic sleeve 2 respectively. The first connection point 51 and the second connection point 52 are only for the convenience of explaining the connection relationship between the connecting rod 4 and the movable tube 3 and the telescopic sleeve 2, and are not intended to be a specific limitation. Fig.12 , Fig.13As shown, the first rotating shaft 31 is radially arranged at the determined height position of the movable tube 3, the connecting rod 4 is a double connecting rod structure, and the ends of the two connecting rods 4 are respectively rotatably connected to the two ends of the first rotating shaft 31. The outer wall of the bottom end of the telescopic sleeve 2 is provided with a lower adapter 21, and the lower adapter 21 is provided with a second rotating shaft 22, and the other ends of the two connecting rods 4 are respectively rotatably connected to the second rotating shaft 22 of the lower adapter 21. In other words, the double connecting rod 4, the first rotating shaft 31 and the second rotating shaft 22 form a square frame.

[0049] Here, the first rotating shaft 31 is set at the determined height position of the movable tube 3, which means that the first rotating shaft 31 and the movable tube 3 will only rotate relative to each other, but the relative height of the first rotating shaft 31 to the movable tube 3 will not change. In this embodiment, the determined height position of the movable tube 3 is 1 / 3-2 / 3 of the height of the movable tube 3 from bottom to top. Preferably, the determined height position of the movable tube 3 is 3 / 5 of the height of the movable tube 3 from bottom to top. With such a setting, and in combination with the end of the connecting rod 4 being rotatably connected to the bottom of the telescopic sleeve 2, the length of the connecting rod 4 is larger, so that the adjustment range of the support frame is larger, that is, the adjustment range of the spacing between adjacent movable tubes 3 is larger. Figure 3 As shown, the portion of one movable tube 3 located below the first connection point 51, the connecting rod 4 connected to the movable tube 3, the adjacent connecting rod, and the portion of the adjacent movable tube located below its first connection point form an M shape, and the overall supporting structure is stable and reliable.

[0050] Whether in the folded state or the unfolded state, the movable tube 3 is tilted and extends downward and outward from the end connected to the center bracket 1. In other words, even in the folded state, the movable tube 3 and the connecting rod 4 cooperate to form a V-shaped structure with an opening facing downward.

[0051] In order to achieve the inclination of the connecting line of the first connection point 51 and the second connection point 52 relative to the central axis of the telescopic sleeve 2, a neck ring 32 is sleeved on the outer wall of the movable tube 3, and the first rotation axis 31 passes through the outer wall of the neck ring 32 and is rotatably connected to the connecting rod 4. At the same time, the radial width of the neck ring 32 on one side is greater than the distance between the second rotation axis 22 and the outer wall of the telescopic sleeve 2, so that the lower end of the movable tube 3 can be slightly tilted outward when the movable tube 3 is in the retracted state close to the telescopic sleeve 2, ensuring that the lower end of the connecting rod 4 remains in an inwardly tilted state, thereby making it relatively simple and convenient for the support frame to switch from the retracted state to the deployed state.

[0052] like Figure 4As shown, in this embodiment, the outer wall of the central support 1 is movably provided with an upper adapter 11, the number of movable tubes 3 is three, and they are evenly spaced along the outer circumference of the central support 1, and the top ends of the movable tubes 3 are evenly spaced and connected to the upper adapter 11 in the circumferential direction, specifically, the movable tubes 3 are rotatably connected to the third rotation axis 12 of the upper adapter 11. The upper adapter 11 and the lower adapter 12 are arranged parallel to each other, so that the third rotation axis 12, the first rotation axis 31, and the second rotation axis 22 are arranged parallel to each other.

[0053] The upper adapter 11 and the center bracket 1 can move relative to each other. In order to fix the upper adapter 11 at a certain axial height of the center bracket 1, a locking structure 6 for locking the upper adapter 11 and the center bracket 1 is also included.

[0054] In order to realize the extension and retraction of the central support 1 , the central support 1 includes a plurality of branch pipes 13 which are connected inside and outside of each other, so that the overall height of the central support 1 can be adjusted by adjusting the overlapping length of the plurality of branch pipes 13 , which makes the central support 1 more flexible to use.

[0055] like Figure 9-11 As shown, the locking structure 6 includes an elastic locking ring 61 sleeved on the center bracket 1, a knob 62 connected to the elastic locking ring 61, and a threaded connection section 63 provided on the upper adapter 11. The outer wall of the elastic locking ring 61 has a conical surface, and the inner wall of the threaded connection section 63 has a conical surface. The elastic locking ring 61 is inserted between the center bracket 1 and the threaded connection section 63. As the external force is applied to rotate the knob 62, the knob 62 and the threaded connection section 63 are threadedly connected. The conical surface of the threaded connection section 63 cooperates with the conical surface of the elastic locking ring 61 to achieve the locking of the center bracket 1 and the upper adapter 11. Rotating the knob 62 in the opposite direction can achieve the loosening of the center bracket 1 and the upper adapter 11.

[0056] The locking structure 6 can be used to adjust the connection position between the central support 1 and the upper adapter 11, so as to facilitate the adjustment of the spacing between the lower ends of each movable tube 3 when the support frame is unfolded, so as to adapt to different usage scenarios.

[0057] Embodiment 2

[0058] A lamp stand comprises a support frame of the above structure and a lamp holder connecting unit located at the top of the support frame, wherein the lamp holder connecting unit can be any structure in the prior art and is not specifically limited, so as to facilitate users to transfer and use the lamp.

[0059] Embodiment 3

[0060] A photographic telescopic stand includes a support frame of the above structure and a photographic device connecting unit located at the top of the support frame, wherein the photographic device connecting unit may be any structure in the prior art, such as a photographic pan head, etc., and is not specifically limited, so as to facilitate users to transfer and use photographic equipment.

[0061] Embodiment 4

[0062] A musical instrument stand comprises a support frame of the above structure and a connecting unit located at the top of the support frame, wherein the connecting unit can be any structure in the prior art, such as a music score stand, a musical instrument stand, etc., without any specific limitation, so as to facilitate the user to transfer and use the musical instrument.

[0063] Embodiment 5

[0064] An easel includes a support frame of the above structure and a drawing board device located at the top of the support frame, wherein the drawing board device can be any structure in the prior art and is not specifically limited, so that it is convenient for users to transfer and use the drawing board device.

[0065] The above specific implementation modes are used to explain the present invention rather than to limit the present invention. Any modification and change made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A support frame, characterized in that: include: Center support (1); A telescopic sleeve (2) is connected to the central support (1) so as to be axially movable up and down; At least two movable tubes (3) movably connected to the outer periphery of the central support (1); A connecting rod (4), one end of which is movably connected to the movable tube (3), the connection point between the two being a first connection point (51), and the other end of which is movably connected to the telescopic sleeve (2), the connection point between the two being a second connection point (52); The connecting line of the first connection point (51) and the second connection point (52) is arranged obliquely relative to the central axis of the telescopic sleeve (2), and the distance between the first connection point (51) and the central axis of the telescopic sleeve (2) is greater than the distance between the second connection point (52) and the central axis of the telescopic sleeve (2).

2. The support frame according to claim 1, characterized in that: When the movable tube (3) and the connecting rod (4) are retracted close to the central support (1), the horizontal height at which the bottom end of the movable tube (3) is located is above the horizontal height at which the bottom end of the telescopic sleeve (2) is located.

3. The support frame according to claim 1, characterized in that: The movable tube (3) is arranged at an angle, and extends downward and outward from one end connected to the central support (1).

4. The support frame according to claim 1, 2 or 3, characterized in that: A first rotating shaft (31) is radially provided at a determined height position of the movable tube (3), and the end of the connecting rod (4) is rotatably connected to the first rotating shaft (31); a lower adapter (21) is provided on the outer wall of the bottom end of the telescopic sleeve (2), and the other end of the connecting rod (4) is rotatably connected to a second rotating shaft (22) of the lower adapter (21).

5. The support frame according to claim 4, characterized in that: The connecting rod (4) is a double connecting rod structure, which is rotatably connected to the two ends of the first rotating shaft (31) and the second rotating shaft (22) respectively. The double connecting rod (4), the first rotating shaft (31) and the second rotating shaft (22) form a square frame.

6. The support frame according to claim 4, characterized in that: The outer wall of the movable tube (3) is sleeved with a neck ring (32), and the first rotating shaft (31) passes through the outer wall of the neck ring (32) and is connected to the connecting rod (4).

7. The support frame according to claim 6, characterized in that: The radial width of one side of the neck ring (32) is greater than the distance between the second rotating shaft (22) and the outer wall of the telescopic sleeve (2).

8. The support frame according to claim 4, characterized in that: The determined height position of the movable tube (3) is 1 / 3-2 / 3 of the height of the movable tube (3) from bottom to top.

9. The support frame according to claim 4, characterized in that: An upper adapter (11) is provided on the outer wall of the central support (1), and the top end of the movable tube (3) is rotatably connected to a third rotating shaft (12) of the upper adapter (11); The upper adapter (11) and the lower adapter (21) are arranged parallel and opposite to each other.

10. The support frame according to claim 9, characterized in that: The upper adapter (11) is movably connected to the central support (1), and also includes a locking structure (6) for locking the upper adapter (11) and the central support (1).

11. The support frame according to claim 1, characterized in that: The number of the movable tubes (3) is three, and they are evenly spaced and arranged along the outer circumference of the central support (1).

12. The support frame according to claim 1, characterized in that: The portion of the movable tube below the first connection point, the connecting rod, the adjacent connecting rod, and the portion of the adjacent movable tube below the first connection point are in an M shape.

13. The support frame according to claim 1, characterized in that: The central support (1) comprises a plurality of branch pipes (13) which are connected inside and outside the central support.

14. A lamp stand, characterized in that: It comprises a support frame as described in any one of claims 1 to 13, and a lamp holder connecting unit arranged on the top of the support frame.

15. A telescopic photographic stand, characterized in that: It comprises a support frame as described in any one of claims 1-13, and a photographic device connecting unit arranged on the top of the support frame.

16. A musical instrument stand, characterized in that: It comprises a support frame as described in any one of claims 1 to 13, and a connecting unit arranged at the top end of the support frame.

17. An easel, characterized in that: It comprises a support frame as described in any one of claims 1-13, and a drawing board device arranged on the top of the support frame.

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