Display stand for urban planning

Abstract

The utility model belongs to the technical field of display stands for urban planning, and particularly relates to a display stand for urban planning. Comprising a base, supporting seats are fixed to the left side and the right side of the base, supporting arms are arranged on the inner sides of the supporting seats, a camera is connected between the supporting ends of the two supporting arms, a locking mechanism is arranged between the supporting arms and the supporting seats, the locking mechanism comprises a neck bush, mounting holes are formed in the supporting seats, a rotating column is independently installed in the neck bush in a penetrating mode, and the rotating column is connected with the camera. First magnetic blocks are fixed to the outer side walls of the rotating columns, through holes communicating the inside and the outside are formed in the neck bush, lock holes are formed in the inner wall of the mounting hole, lock columns independent of the lock holes are arranged in the lock holes, second magnetic blocks are fixed to the bottom ends of the lock columns, and third magnetic blocks are arranged between every two adjacent first magnetic blocks. According to the utility model, the lock column is pushed to enter the lock hole through the cooperation of the first magnetic block and the second magnetic block, so that the neck bush is stably locked, and the shake of the camera caused by the instability of the supporting arm is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of display stands for urban planning, in particular to a display stand for urban planning. Background Art

[0002] Urban planning is a crucial component of regulating urban development and construction. To comprehensively present medium- and long-term urban plans to the public and solicit feedback from all parties, establishing an urban planning display stand is particularly important. A display stand, also known as a physical display stand, is a crucial device that connects to a projector and television, clearly displaying materials, handouts, physical objects, and slides. A typical display stand consists of three main components: a camera, a light source, and a base. The back of the stand is also equipped with a series of interfaces for easy connection and use. To meet the demands of the high-end market, some display stands have also added advanced accessories such as infrared remote controls, computer image capture adapters, and LCD monitors, further enhancing their functionality and user experience.

[0003] Most display stands currently on the market connect the camera to the base via a support arm. This design allows the camera to be lowered by folding the support arm when stored, effectively reducing the space it takes up. The support arm is equipped with joints to achieve the function of opening and folding. However, in the existing technology, the joints usually rely on the self-locking function of the damping shaft to maintain stability. However, this self-locking function is too dependent on damping and lacks stability. Occasional collisions can easily cause the camera to shake, affecting the display effect. Utility Model Content

[0004] The purpose of the utility model is to provide a display stand for urban planning, which can lock the joints of the support arms more stably and reduce the shaking of the camera during use.

[0005] The urban planning display stand comprises a base, support bases are fixed on the left and right sides of the base, rotatable support arms are provided on the inner sides of the support bases, cameras are connected between the support ends of the two support arms, and a locking mechanism for locking the support arms is provided between the support arms and the support bases, and the locking structure comprises an inner sleeve, mounting holes communicating with the left and right sides are opened on the support base, the inner sleeve is fixed to the rotating end of the support arm, the inner sleeve is installed in the mounting hole and can rotate freely, a rotating column is independently installed in the inner sleeve, and a plurality of first blocks distributed at equal intervals along its circumference are fixed on the outer wall of the rotating column The magnetic blocks are provided with a through hole communicating with the inside and outside on the inner sleeve corresponding to each first magnetic block, and a lock hole is provided on the inner wall of the mounting hole corresponding to each through hole, and a lock column independent of each other is provided in the lock hole, and the depth of the lock hole is less than the length of the lock column; the bottom end of the lock column is fixed with a second magnetic block of the same polarity and repulsive to the first magnetic block, and a third magnetic block of opposite polarity and attractive to the second magnetic block is provided between two adjacent first magnetic blocks; the length of the lock column is less than the distance between the third magnetic block and the second magnetic block; one end of the rotating column passes through the inner sleeve and is fixed with a knob for driving it to rotate, and the knob is located on the outside of the support seat.

[0006] Furthermore, there are two first magnetic blocks, which are symmetrically distributed on the outer wall of the rotating column in an up-down manner; there are two third magnetic blocks, which are symmetrically distributed on the outer wall of the rotating column in an up-down manner.

[0007] Furthermore, corresponding to all the first magnetic blocks and the third magnetic blocks, an inlay groove is opened on the outer side wall of the rotating column, and the first magnetic blocks and the third magnetic blocks are all fixed in the inlay groove.

[0008] Furthermore, the inner sleeve and the support arm are connected via a connecting column.

[0009] Furthermore, a first limiting ring is independently mounted on the connecting column, the first limiting ring is fixed in the mounting hole, and the inner sleeve and the support arm are respectively attached to both sides of the first limiting ring.

[0010] Furthermore, a second limiting ring is provided between the rotating column and the inner side wall of the inner sleeve to limit the axial movement of the rotating column.

[0011] Furthermore, the inner sleeve includes a front half sleeve and a rear half sleeve, and the front half sleeve and the rear half sleeve are detachably connected.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model drives the rotating column to rotate by the knob, and pushes the lock column into the lock hole under the cooperation of the first magnetic block and the second magnetic block, thereby stably locking the inner sleeve and avoiding the shaking of the camera caused by the instability of the support arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure at A in the middle;

[0016] Figure 3 for Figure 1 Schematic diagram of the left view structure;

[0017] Figure 4 It is a three-dimensional structural diagram of the utility model;

[0018] Figure 5 This is the exploded structural diagram of the locking mechanism;

[0019] The names of the components in the figure are: 1. Base; 2. Support seat; 3. First limiting ring; 4. Nut; 5. Knob; 6. Rotating column; 7. Second limiting ring; 8. Locking column; 9. Inner sleeve; 10. Connecting column; 11. Support arm; 12. Camera; 13. Light; 14. Limit block; 15. First magnetic block; 16. Screw; 17. Third magnetic block; 18. Second magnetic block. DETAILED DESCRIPTION

[0020] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings, but this does not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0021] Example

[0022] The city planning display stand described in this embodiment is as follows: Figures 1 to 4 As shown, the base 1 includes a support base 2 fixed on both the left and right sides of the base 1. The inner side of the support base 2 is provided with a rotatable support arm 11, and a camera 12 is connected between the support ends of the two support arms 11. The base 1, including the electronic module and the camera 12 inside it, are all existing technologies. It is often used in teaching in multimedia classrooms. Its use process is as follows:

[0023] Camera 12 converts objects placed on base 1 into video signals, which are then fed into the projection equipment. Lighting 13 illuminates objects, ensuring a clear and bright image. Base 1 serves as a placeholder for items, while interfaces output various video and control signals. High-end digital display stands connect to computers via computer image capture adapters. Software programs allow the video signals output by the display stand to be fed into the computer for various external processing.

[0024] The interior of the base 1 is hollow and is used to install various electrical components; the support arm 11 is an "L"-shaped structure. When the two support arms 11 are connected to the camera 12, the three of them form a "door"-shaped structure as a whole; the interior of the support arm 11 is hollow and is used to pass the wires between the electrical components inside the base 1 and the camera 12; the rotating end of the support arm 11 is provided with a fan-shaped through groove, which is connected to the interior of the support arm 11, and a wire hole is opened on the table top of the base 1 corresponding to the position of the through groove. After the wire passes through the through groove, it is connected to the inside of the base 1 through the wire hole and is electrically connected to the corresponding electrical components.

[0025] like Figure 4 As shown, the lighting lamp 13 is installed on the inner side of the supporting arm 11.

[0026] A locking mechanism for locking the support arm 11 is provided between the support arm 11 and the support seat 2 , and the locking structure includes an inner sleeve 9 .

[0027] like Figure 5 As shown, the inner sleeve 9 includes a front half and a rear half, and the front half and the rear half are detachably connected and connected by four screws 16. The front half has four connecting holes, and the rear half has corresponding threaded holes. The threaded sections of the screws 16 independently pass through the connecting holes and are threadedly engaged with the threaded holes.

[0028] The support base 2 is provided with a mounting hole communicating with the left and right sides. During production, the support base 2 is divided into two detachable upper and lower parts with the center line of the mounting hole as a dividing line, so as to facilitate the installation of the inner lining 9 into the mounting hole.

[0029] like Figure 2 and Figure 5 As shown, inner sleeve 9 is fixed to the rotating end of support arm 11. Inner sleeve 9 is inserted into the mounting hole and can rotate freely. Inner sleeve 9 and support arm 11 are connected by connecting column 10. Connecting column 10 is fixed to the rotating end of support arm 11. A fixing ring is fixed inside inner sleeve 9; the fixing ring is fixed to the rear half of the sleeve. The connecting end of connecting column 10 independently passes through the inner ring of the fixing ring and is connected to nut 4. The connecting end of connecting column 10 has an external thread that threadably mates with nut 4. The fixing ring and the rear half of the sleeve are integrally molded.

[0030] The inner ring of the fixed ring is provided with two upper and lower limit grooves, each of which is provided with a limit block 14 independent of each other, and the limit blocks 14 are fixed to the connecting column 10. When in use, the support arm 11 rotates, and the limit blocks 14 cause the inner sleeve 9 and the support arm 11 to rotate synchronously.

[0031] like Figure 1 and Figure 2As shown, a first limiting ring 3 is independently mounted on the connecting column 10. The first limiting ring 3 is fixed in the mounting hole, and the inner sleeve 9 and the support arm 11 are respectively attached to both sides of the first limiting ring 3. During production, the first limiting ring 3 and the lower half of the support seat 2 are integrally formed. The first limiting ring 3 is located between the inner sleeve 9 and the support arm 11 to prevent the support arm 11 from sliding left and right during use. The tightness of the nut 4 represents the tightness of the rotation of the support arm 11. Therefore, the nut 4 should not be rotated too tight to prevent the support arm 11 from being difficult to rotate. During installation, a rubber gasket can be set between the inner sleeve 9 and the first limiting ring 3 or between the inner sleeve 9 and the support arm 11, and the rubber gasket is independently mounted on the connecting column 10 to reduce the wear between the smaller support arm 11, the first limiting ring 3 and the inner sleeve 9.

[0032] like Figure 5 As shown, a rotating column 6 is independently installed in the inner sleeve 9, and a number of first magnetic blocks 15 are fixed on the outer wall of the rotating column 6 and are distributed at equal intervals along its circumference. A through hole communicating with the inside and outside is opened on the inner sleeve 9 corresponding to each first magnetic block 15, and a lock hole is opened on the inner wall of the mounting hole corresponding to each through hole. A lock column 8 independent of it is provided in the lock hole, and the depth of the lock hole is less than the length of the lock column 8; a second magnetic block 18 of the same polarity and repulsive to the first magnetic block 15 is fixed to the bottom end of the lock column 8, and a third magnetic block 17 of opposite polarity and attractive to the second magnetic block 18 is provided between two adjacent first magnetic blocks 15, and the length of the lock column 8 is less than the distance between the third magnetic block 17 and the second magnetic block 18.

[0033] There are two first magnetic blocks 15, symmetrically distributed vertically on the outer wall of the rotating cylinder 6. There are two third magnetic blocks 17, symmetrically distributed front-to-back on the outer wall of the rotating cylinder 6. Mounting grooves are defined on the outer wall of the rotating cylinder 6 for each of the first magnetic blocks 15 and third magnetic blocks 17, and each of the first magnetic blocks 15 and third magnetic blocks 17 is secured within the mounting grooves.

[0034] In this embodiment, the bottom end of the lock post 8 is one end that rests against the rotating post 6, and the other end is the top end. During use, the rotating post 6 rotates, and when the first magnetic block 15 and the second magnetic block 18 are aligned, a thrust is generated between the two due to the repulsion of like charges. Under the action of this thrust, the top end of the lock post 8 enters the lock hole. Since the depth of the lock hole is less than the length of the lock post 8, the bottom end of the lock post 8 remains in the through hole of the inner bushing 9, and a lock is generated between the inner wall of the mounting hole and the inner bushing 9. At this time, the support arm 11 is in a non-rotatable state. When the camera 12 is above the base 1, the locking can be completed by rotating the rotating post 6. During production, the lock post 8 can be set to a frustum structure, and the corresponding lock hole must also be adapted to it, which can increase the tightness between the lock post 8 and the lock hole.

[0035] When the support arm 11 needs to be folded, the rotating column 6 is rotated so that the third magnetic block 17 is opposite to the second magnetic block 18. Since the two are in an opposite-sex attraction relationship, the lock column 8 is disengaged from the lock hole under the attraction of the third magnetic block 17. Since the length of the lock column 8 is less than the distance between the third magnetic block 17 and the second magnetic block 18; the lock column 8 returns to the through hole, and the lock between the inner sleeve 9 and the inner wall of the mounting hole is released. The inner sleeve 9 and the support arm 11 can rotate freely, thereby folding the support arm 11.

[0036] One end of the rotating column 6 passes through the inner sleeve 9 and is fixed with a knob 5 that drives it to rotate, and the knob 5 is located on the outside of the support base 2. When in use, the rotating column 6 is driven to rotate by rotating the knob 5.

[0037] During production, knob 5 is provided with two indicator arrows representing the positions of first and third magnets 15, 17, respectively. A reference arrow is provided on the outer wall of support base 2. When the indicator arrow representing first magnet 15 aligns with the reference arrow, first magnet 15 and second magnet 18 are opposite each other. When the indicator arrow representing third magnet 17 aligns with the reference arrow, third magnet 17 and second magnet 18 are opposite each other. The difference between the indicator arrows representing first magnet 15 and third magnet 17 lies in their different colors.

[0038] like Figure 2 As shown, a second limiting ring 7 is provided between the rotating column 6 and the inner wall of the inner sleeve 9 to limit the axial movement of the rotating column 6; the second limiting ring 7 is mounted on the rotating column 6, and the second limiting ring 7 is located in the annular groove, so that the rotating column 6 can only rotate and cannot move along its own axial direction, so the knob 5 fits on the outer wall of the support seat 2, that is, the distance between the support arm 11 and the knob 5 is equal to the width of the support seat 2, at this moment, the support arm 11 can be better prevented from shaking left and right.

[0039] like Figure 5 As shown, the installation steps are: first, the connecting end of the connecting column 10 is independently passed through the first limiting ring 3, and then independently passed through the inner ring of the fixed ring, and the limiting block 14 enters the limiting groove; then, screw on the nut 4; secondly, the rotating column 6 is passed into the inner sleeve 9, and the second limiting ring 7 enters the annular groove; again, the front half and the rear half of the inner sleeve 9 are combined; finally, the upper and lower parts of the support seat 2 are combined to complete the overall installation.

[0040] In actual use:

[0041] The support arm 11 rotates to support the camera 12 directly above the base 1. At this time, the through hole on the inner sleeve 9 is opposite to the lock hole. Then the rotating column 6 is rotated to make the first magnetic block 15 opposite to the second magnetic block 18. Under the principle of like charges repel each other, the lock column 8 is pushed into the lock hole to achieve locking between the inner sleeve 9 and the inner wall of the mounting hole, so that the inner sleeve 9 cannot rotate, thereby locking the support arm 11 to keep the support arm 11 stable and avoid shaking of the camera 12 due to unstable connection between the support arm 11 and the base 1.

[0042] During the production process of this embodiment, the coordination between the lock post 8, the through hole, and the lock hole is particularly important. When the support arm 11 needs to be retracted, the knob 5 is rotated to align the second magnetic block 18 with the third magnetic block 17. Due to the principle of opposite magnets attracting each other, the lock post 8 is disengaged from the lock slot, releasing the lock between the inner sleeve 9 and the mounting hole, and restoring the inner sleeve 9's rotation function. In other words, the support arm 11 is retracted, and the camera 12 is placed squarely on the base 1, reducing storage space.

Claims

1. A display stand for urban planning, comprising a base (1), support bases (2) fixed on both left and right sides of the base (1), rotatable support arms (11) provided on the inner sides of the support bases (2), a camera (12) connected between the support ends of the two support arms (11), a locking mechanism for locking the support arms (11) provided between the support arms (11) and the support base (2), characterized in that: The locking mechanism includes an inner sleeve (9), a mounting hole communicating with the left and right sides is opened on the support seat (2), the inner sleeve (9) is fixed to the rotating end of the support arm (11), the inner sleeve (9) is installed in the mounting hole and can rotate freely, a rotating column (6) is independently installed in the inner sleeve (9), and a plurality of first magnetic blocks (15) are fixed on the outer wall of the rotating column (6) and are distributed at equal intervals along the circumference thereof, and a through hole communicating with the inside and outside is opened on the inner sleeve (9) corresponding to each first magnetic block (15), and a lock is opened on the inner wall of the mounting hole corresponding to each through hole. The lock holes are provided with lock cylinders (8) which are independent of each other, and the depth of the lock holes is less than the length of the lock cylinders (8); the bottom ends of the lock cylinders (8) are fixed with second magnetic blocks (18) which are of the same polarity and repel each other as the first magnetic blocks (15), and third magnetic blocks (17) which are of opposite polarity and attract each other as the second magnetic blocks (18) are provided between two adjacent first magnetic blocks (15); the length of the lock cylinder (8) is less than the distance between the third magnetic block (17) and the second magnetic block (18); one end of the rotating cylinder (6) passes through the inner sleeve (9) and is fixed with a knob (5) which drives the rotating cylinder (6) to rotate.

2. The urban planning display stand according to claim 1, characterized in that: There are two first magnetic blocks (15), and the two first magnetic blocks (15) are symmetrically distributed on the outer side wall of the rotating column (6) in an up-down manner; there are two third magnetic blocks (17), and the two third magnetic blocks (17) are symmetrically distributed on the outer side wall of the rotating column (6) in an up-down manner.

3. The urban planning display stand according to claim 2, characterized in that: Inlay grooves are provided on the outer side wall of the rotating column (6) corresponding to all the first magnetic blocks (15) and the third magnetic blocks (17), and the first magnetic blocks (15) and the third magnetic blocks (17) are fixed in the inlay grooves.

4. The urban planning display stand according to claim 1, characterized in that: The inner sleeve (9) and the support arm (11) are connected via a connecting column (10).

5. The urban planning display stand according to claim 4, characterized in that: A first limiting ring (3) is independently mounted on the connecting column (10), the first limiting ring (3) is fixed in the mounting hole, and the inner sleeve (9) and the support arm (11) are respectively fitted on both sides of the first limiting ring (3).

6. The urban planning display stand according to claim 1, characterized in that: A second limiting ring (7) for limiting the axial movement of the rotating column (6) is provided between the rotating column (6) and the inner side wall of the inner sleeve (9).

7. The urban planning display stand according to claim 1, characterized in that: The inner sleeve (9) comprises a front half sleeve and a rear half sleeve, and the front half sleeve and the rear half sleeve are detachably connected.

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