Product exhibition propaganda device
By designing a product exhibition and promotion device that includes rotating components and adjustment components, the problem that existing devices cannot be promoted through product and are highly fixed is solved, and efficient exhibition and promotion and convenient user experience are achieved.
Patent Information
- Application Number
- CN202420473142.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-12
AI Technical Summary
The existing product exhibition and publicity devices cannot be promoted and exhibited through products, lack interactive devices, and the height is fixed and cannot be changed according to the use needs, resulting in poor exhibition publicity and inconvenient use.
A product exhibition and publicity device including a first convex disc, a door plate, a support disc, an exhibition promotion component and an adjustment component is designed. The product can be promoted to the exhibition and interact with tourists by rotating the assembly and interactive device, while changing the height of the device according to the use needs through the adjustment component.
It improves the exhibition publicity effect, increases tourists' interest in products, facilitates the use of the device, meets the needs of changing heights according to the needs of use, and reduces the difficulty of use.
Smart Images

Figure CN222604222U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of products, in particular to a product exhibition and publicity device. Background Art
[0002] Products refer to a series of products launched to meet demand, and in order to promote product sales and product brand promotion, products must be exhibited and promoted. Therefore, a product exhibition and promotion device is needed.
[0003] To this end, Chinese patent publication number CN214253692U discloses a product exhibition and promotion device, including a positioning rod and a support plate, positioning rods are installed on both sides of the upper end of the support plate, the inner sides of the two positioning rods are rotatably connected to the lower shell body, the two ends of the lower shell body are fixed with rotating shafts, the other ends of the two rotating shafts are rotatably arranged inside the positioning rods, the upper end of the lower shell body is rotatably connected to the upper shell body, one end of the upper shell body is fixed with a display, one end of the upper shell body is fixed with a threaded rod, one end of the positioning rod is provided with a slide groove, one end of the threaded rod passes through the slide groove and is arranged on the outside of the positioning rod. The utility model adopts an upper shell body and a lower shell body, the two shell bodies are rotatably hinged, and the display is arranged on the outer wall of the upper shell body. In this way, the upper shell body can be rotated according to the needs of use to make the display tilted at a certain angle, and the display angle of the display can be adjusted according to the needs of use. It can be displayed vertically or tilted, which has a better effect.
[0004] However, in this patent, since the product is exhibited and promoted through an advertising machine, it is impossible to promote and exhibit the product through the product, and since it is not equipped with an interactive device, it is impossible to promote and exhibit the product through the interactive device. This will reduce tourists' interest in the product and reduce the exhibition and promotion effect of the product. In addition, in this patent, since its height is fixed, when it needs to change the height according to usage requirements, it cannot change the height according to usage requirements, which will make it unable to meet usage requirements and increase its difficulty of use. Utility Model Content
[0005] The utility model provides a product exhibition and publicity device to solve the problems of poor exhibition and publicity effect and inconvenience in use in the prior art, which can improve the exhibition and publicity effect and is convenient to use.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a product exhibition and promotion device, comprising a first convex disk, a door-shaped plate and a supporting plate; an exhibition and promotion component is rotatably installed on the top of the first convex disk, a rotating component is rotatably installed inside the first convex disk, second threaded holes are provided on the front and rear sides of the door-shaped plate, an end cover component is fixedly installed on the right side of the door-shaped plate, a first adjustment component is fixedly installed on the bottom of the first convex disk, a second adjustment component is fixedly installed on the top of the supporting plate, and a limiting component is fixedly installed at the top center of the supporting plate.
[0007] Furthermore, the exhibition and publicity component includes an open exhibition and publicity box, the bottom of which is fixedly mounted on the top of the first convex plate, the open exhibition and publicity box is fixedly connected to the door-shaped plate, a cross partition is fixedly connected to the interior of the open exhibition and publicity box, a plurality of long installation grooves are provided on the outer side surface of the open exhibition and publicity box, and a transparent plate is fixedly connected to the interior of the long installation grooves.
[0008] Furthermore, the rotating assembly includes a second convex disk, which is rotatably mounted inside the first convex disk, and the top of the second convex disk is fixedly mounted on the bottom of the open exhibition box. A first thread groove is provided on the outer surface of the bottom end of the second convex disk, and the internal thread of the first thread groove is connected to a first screw rod, which is threadedly mounted inside the top end disk body of the first convex disk, and the outer surface of the first screw rod is threadedly connected to a first supporting rod, the right side of the first supporting rod is fixedly mounted on the outer surface of the top end disk of the first convex disk, and the bottom of the first supporting rod is fixedly mounted on the top of the bottom end disk of the first convex disk.
[0009] The top end of the second support rod is fixedly mounted on the bottom of the support rod, and the left side of the second support rod is fixedly mounted on the right side of the door-shaped plate. The top of the second support rod is fixedly mounted on the bottom of the support rod, and the left side of the second support rod and the left side of the support rod are fixedly mounted on the right side of the open exhibition box. A first threaded hole is provided inside the support rod, and one side of the support rod is fixedly connected to a support shaft, and an outer surface of the support shaft and the top of the second support rod are rotatably connected to a plate-shaped cover together, the plate-shaped cover is rotatably connected to the support rod, the plate-shaped cover is movably connected to the door-shaped plate, and a handle is fixedly connected to the rear side of the plate-shaped cover, and a second threaded groove is provided on the front and rear sides of the plate-shaped cover, and a convex shaft is fixedly connected to one side of the support rod away from the support shaft, and an outer surface of one end of the convex shaft close to the support rod and an end of the other end of the convex shaft away from the support rod are rotatably connected to a connecting long rod, the connecting long rod is rotatably connected to the support rod, and the internal thread of the connecting long rod is connected to the second screw.
[0010] Furthermore, the first adjustment component includes a connecting rod, the top of which is fixedly mounted on the bottom of the first convex disk, the front and rear sides of the connecting rod are provided with limited length grooves, one side of the bottom end of the connecting rod is fixedly connected to a connecting square rod, and a side of the connecting rod away from the connecting square rod is provided with multiple third threaded grooves.
[0011] Furthermore, the second adjustment component includes a supporting long tube, the bottom of which is fixedly mounted on the top of the supporting plate, the supporting long tube is slidably connected to the connecting vertical rod and the connecting square rod respectively, the front inner side surface of the top end and the rear inner side surface of the top end of the supporting long tube are fixedly connected to a limiting block, and the limiting block is slidably connected to the limiting long groove.
[0012] Furthermore, the limiting assembly includes a circular long plate, the bottom of which is fixedly mounted on the top of the supporting plate, the circular long plate is fixedly connected to the supporting long tube, the circular long plate is slidably connected to the connecting square rod, the front and rear sides of the circular long plate are commonly fixedly connected with a circular long rod, the circular long rod is fixedly connected to the supporting long tube, and a third screw is threadedly connected to the inner part of the rod body of the circular long rod.
[0013] The working principle and use principle of the utility model are as follows: in the process of using the device, the device is supported by the support plate, the top of the exhibition and publicity component is opened and closed by the door-shaped plate and the end cover component, the product is promoted and exhibited by the exhibition and publicity component, and the product interacts with tourists by rotation, so that the device increases tourists' interest in the product, and in the process of using the device, when the height of the device needs to be changed according to the use requirements, the height of the device is changed according to the use requirements through the first adjustment component, the second adjustment component and the limit component, so as to avoid the device increasing the difficulty of use due to failure to meet the use requirements.
[0014] The beneficial technical effects of the utility model are:
[0015] By setting the support plate, the device can be supported, by setting the door-shaped plate and the end cover assembly, the top of the exhibition and publicity assembly can be opened and closed, by setting the exhibition and publicity assembly, the first convex plate and the rotating assembly, the product can be promoted and exhibited, and the product can interact with tourists through rotation, so that the device can increase tourists' interest in the product and improve the exhibition and publicity effect, and by setting the first adjustment assembly, the second adjustment assembly and the limit assembly, when the height of the device needs to be changed according to the use requirements, the height of the device can be changed according to the use requirements, so that the device can avoid increasing the difficulty of use due to failure to meet the use requirements, and the device can be convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.
[0017] Figure 1 It is the first frontal stereoscopic schematic diagram of the utility model.
[0018] Figure 2 It is a three-dimensional schematic diagram of the connecting pole of the utility model.
[0019] Figure 3 It is a three-dimensional schematic diagram of the plate-shaped cover of the utility model.
[0020] Figure 4 It is a three-dimensional schematic diagram of the supporting long tube of the utility model.
[0021] Figure 5 It is a second frontal stereoscopic schematic diagram of the utility model.
[0022] Figure 6 It is a three-dimensional schematic diagram of the second convex disk of the utility model.
[0023] Figure 7 It is a rear-view stereoscopic schematic diagram of the utility model.
[0024] Explanation of the numbers in the figure: 1. handle; 2. first convex disk; 3. first screw; 4. first supporting long rod; 5. third threaded groove; 6. third screw; 7. circular long rod; 8. supporting disk; 9. circular long plate; 10. supporting long tube; 11. limiting block; 12. limiting long groove; 13. connecting vertical rod; 14. transparent plate; 15. mounting long groove; 16. open exhibition publicity box; 17. second threaded hole; 18. second supporting long rod; 19. convex shaft; 20. cross partition; 21. supporting vertical rod; 22. connecting long rod; 23. second screw; 24. plate-shaped cover; 25. door-shaped plate; 26. second convex disk; 27. supporting shaft; 28. first threaded hole; 29. second threaded groove; 30. connecting square rod; 31. first threaded groove. DETAILED DESCRIPTION
[0025] The product exhibition and publicity device of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0026] like Figures 1 to 7A product exhibition and promotion device comprises a first convex plate 2, a door-shaped plate 25, a support plate 8, an open exhibition and promotion box 16, a second convex plate 26, a second support long rod 18 and a support vertical rod 21, the front and rear sides of the door-shaped plate 25 are provided with second threaded holes 17, a cross partition 20 is fixedly connected to the inside of the open exhibition and promotion box 16, a plurality of installation long grooves 15 are provided on the outer side of the open exhibition and promotion box 16, a transparent plate 14 is fixedly connected to the inside of the installation long grooves 15, and a second convex plate 26 is provided on the outer surface of the bottom end thereof. The first thread groove 31 is internally threadedly connected with the first screw rod 3, the first screw rod 3 is threadedly installed inside the top disk body of the first convex disk 2, the outer surface of the first screw rod 3 is threadedly connected with the first supporting long rod 4, the interior of the supporting vertical rod 21 is provided with a first threaded hole 28, one side of the supporting vertical rod 21 is fixedly connected with a supporting shaft 27, the outer surface of the supporting shaft 27 and the top of the second supporting long rod 18 are rotatably connected with a plate-shaped cover 24, the rear side of the plate-shaped cover 24 is fixedly connected with the handle 1, and the front side of the plate-shaped cover 24 is fixedly connected with the handle 1. A second thread groove 29 is provided on the rear side and the rear side. A convex shaft 19 is fixedly connected to the side of the support rod 21 away from the support shaft 27. The outer surface of one end of the convex shaft 19 close to the support rod 21 and the other end of the convex shaft 19 away from the support rod 21 are rotatably connected to a connecting long rod 22. The internal thread of the connecting long rod 22 is connected to a second screw rod 23. The second screw rod 23 is threadedly connected to the first threaded hole 28, the second threaded hole 17 and the second thread groove 29 respectively. The number of the second screw rod 23 and the connecting long rod 22 is two. Through the arrangement of the support plate 8, the device can be supported. Through the arrangement of the door-shaped plate 25 and the end cover assembly, the top of the exhibition and publicity assembly can be opened and closed. Through the arrangement of the exhibition and publicity assembly, the first convex plate 2 and the rotating assembly, the exhibition and publicity assembly can publicize and exhibit the product, and the rotating assembly can rotate the exhibition and publicity assembly so that the product can be publicized and exhibited, and the product can interact with tourists through rotation, so that the device can increase the interest of tourists in the product and improve the exhibition and publicity effect.
[0027] When in use, the second screw rod 23 is threadedly connected to the first threaded hole 28 and the second threaded groove 29 respectively, the first screw rod 3 is threadedly connected to the first threaded groove 31, and the third screw rod 6 is threadedly connected to a third threaded groove 5. The support plate 8 can support the device. When the device needs to be used to exhibit and promote products, the product is moved and placed in the open exhibition and promotion box 16. After the placement is completed, the two second screw rods 23 are rotated at the same time to disconnect the second screw rod 23 from the second threaded groove 29 and make one end of the second screw rod 23 enter the first threaded hole 28, and the handle 1 is turned counterclockwise. The plate-shaped cover 24 is rotated so that the plate-shaped cover 24 rotates along the supporting upright rod 21, the second supporting long rod 18 and the supporting shaft 27 respectively. When one side of the plate-shaped cover 24 contacts the top of the open exhibition and publicity box 16, the plate-shaped cover 24 is located inside the door-shaped plate 25, and the second threaded groove 29 corresponds to the second threaded hole 17. The two second screw rods 23 are rotated again at the same time so that the second screw rod 23 is disconnected from the first threaded hole 28 and one end of the second screw rod 23 is located inside the connecting long rod 22. The two connecting long rods 22 are rotated at the same time so that the connecting long rods 22 rotate along the supporting upright rod 21 and the second supporting long rod 18 respectively. The convex shaft 19 rotates to rotate the second screw rod 23. When the second screw rod 23 corresponds to the second threaded hole 17, the two second screw rods 23 are rotated in opposite directions at the same time, so that the second screw rods 23 are respectively threadedly connected with the second threaded hole 17 and the second thread groove 29, so that the open exhibition box 16 is closed. At this time, under the action of the transparent plate 14, visitors can see the products inside the open exhibition box 16 through the transparent plate 14, and the device can be used to display and promote products. In the process of using the device to display and promote products, the first screw rod 3 is rotated to make the first screw rod 3 and the first thread groove 3 1 is disconnected and one end of the first screw rod 3 is located inside the top of the first convex disk 2. At this time, the visitor can rotate the open exhibition and publicity box 16, so that the open exhibition and publicity box 16 and the second convex disk 26 rotate along the first convex disk 2, so that the product of the open exhibition and publicity box 16 can interact with the visitor through rotation. In this process, the top of the exhibition and publicity component can be opened and closed, the product can be promoted and exhibited, and the product can interact with the visitor through rotation, so that the device can increase the interest of the visitor in the product and improve the exhibition and publicity effect.
[0028] like Figures 1 to 7As shown: a product exhibition and promotion device, including a first convex plate 2, a door-shaped plate 25, a support plate 8, a connecting rod 13, a supporting long tube 10 and a circular long plate 9, the front and rear sides of the connecting rod 13 are both provided with a limited position long groove 12, the bottom end of the connecting rod 13 is fixedly connected with a connecting square rod 30, and the side of the connecting rod 13 away from the connecting square rod 30 is provided with a plurality of third thread grooves 5, the top front inner side surface and the top rear inner side surface of the supporting long tube 10 are both fixedly connected with a limited position block 11, the front and rear sides of the circular long plate 9 are jointly fixedly connected with the circular long rod 7, and the circular long plate 9 is fixedly connected with the circular long rod 7. The rod body of the long rod 7 is internally threadedly connected with a third screw rod 6, and the third screw rod 6 is threadedly connected to the third thread groove 5. There are two third screw rods 6. Through the arrangement of the first adjusting component, the second adjusting component and the limiting component, the first adjusting component and the second adjusting component can adjust the height of the device, and the limiting component can limit the first adjusting component. When the height of the device needs to be changed according to usage requirements, the height of the device can be changed according to usage requirements, so that the device can avoid increasing the difficulty of use due to failure to meet usage requirements, and the device can be easy to use.
[0029] When in use, during the use of the device, when the height of the device needs to be changed according to the use requirements, the third screw rod 6 is rotated to disconnect the third screw rod 6 from a third thread groove 5 and one end of the third screw rod 6 is located inside the rod body of the circular long rod 7, and the open exhibition promotion box 16 is moved in the vertical direction, so that the first convex plate 2 and the first thread groove 31 are both moved vertically, so that the connecting vertical rod 13 slides along the supporting long cylinder 10, the limiting long groove 12 slides along the limiting block 11, and the connecting square rod 30 slides along the circular long plate 9 and the supporting long cylinder 10 respectively, so that the height of the device is changed. When the height of the pen of the device is the required height, and when the third screw rod 6 corresponds to another third thread groove 5, the two third screw rods 6 are rotated in the opposite direction at the same time, so that the third screw 6 is threadedly connected to the other third thread groove 5. At this time, the height of the device can be changed according to the use requirements. In this process, the height of the device can be changed according to the use requirements, so that the device can avoid increasing the difficulty of use due to failure to meet the use requirements, so that the device can be convenient to use.
[0030] In this embodiment, the transparent plate 14 is made of transparent plastic, and the top and bottom ends of the plate-shaped cover 24 are both arc surfaces.
Claims
1. A product exhibition and promotion device, comprising a first convex plate (2), a door-shaped plate (25) and a support plate (8); characterized in that The top of the first convex disk (2) is rotatably mounted with an exhibition and publicity component, the interior of the first convex disk (2) is rotatably mounted with a rotating component, the front and rear sides of the door-shaped plate (25) are both provided with second threaded holes (17), the right side of the door-shaped plate (25) is fixedly mounted with an end cover component, the bottom of the first convex disk (2) is fixedly mounted with a first adjustment component, the top of the support disk (8) is fixedly mounted with a second adjustment component, and the top center of the support disk (8) is fixedly mounted with a limiter component.
2. A product exhibition and promotion device according to claim 1, characterized in that: The exhibition publicity component comprises an open exhibition publicity box (16), the bottom of the open exhibition publicity box (16) is fixedly mounted on the top of the first convex plate (2), the open exhibition publicity box (16) is fixedly connected to the door-shaped plate (25), a cross partition plate (20) is fixedly connected inside the open exhibition publicity box (16), a plurality of installation long grooves (15) are formed on the outer side surface of the open exhibition publicity box (16), and a transparent plate (14) is fixedly connected inside the installation long grooves (15).
3. A product exhibition and promotion device according to claim 1 or 2, characterized in that: The rotating assembly comprises a second convex disk (26), the second convex disk (26) is rotatably mounted inside the first convex disk (2), the top of the second convex disk (26) is fixedly mounted on the bottom of the open exhibition box (16), a first thread groove (31) is provided on the outer surface of the bottom end of the second convex disk (26), the first thread groove (31) is internally threadedly connected to a first screw rod (3), the first screw rod (3) is threadedly mounted inside the top disk body of the first convex disk (2), the outer surface of the first screw rod (3) is threadedly connected to a first supporting rod (4), the right side of the first supporting rod (4) is fixedly mounted on the outer surface of the top disk of the first convex disk (2), and the bottom of the first supporting rod (4) is fixedly mounted on the top of the bottom disk of the first convex disk (2).
4. A product exhibition and promotion device according to claim 1 or 2, characterized in that: The end cover assembly comprises a second supporting rod (18) and a supporting upright rod (21); the left side of the second supporting rod (18) and the left side of the supporting upright rod (21) are both fixedly mounted on the right side of the door-shaped plate (25); the top of the second supporting rod (18) is fixedly mounted on the bottom of the supporting upright rod (21); the left side of the second supporting rod (18) and the left side of the supporting upright rod (21) are both fixedly mounted on the right side of the open exhibition box (16); a first threaded hole (28) is provided inside the supporting upright rod (21); a supporting shaft (27) is fixedly connected to one side of the supporting upright rod (21); the outer surface of the supporting shaft (27) and the top of the second supporting rod (18) are rotatably connected to a plate-shaped cover (24); The plate-shaped cover (24) is rotatably connected to the support rod (21), the plate-shaped cover (24) is movably connected to the door-shaped plate (25), the rear side of the plate-shaped cover (24) is fixedly connected to a handle (1), the front side and the rear side of the plate-shaped cover (24) are both provided with a second thread groove (29), the side of the support rod (21) away from the support shaft (27) is fixedly connected to a convex shaft (19), the outer surface of one end of the convex shaft (19) close to the support rod (21) and the other end of the convex shaft (19) away from the support rod (21) are rotatably connected to a connecting rod (22), the connecting rod (22) is rotatably connected to the support rod (21), and the internal thread of the connecting rod (22) is connected to a second screw rod (23).
5. A product exhibition and promotion device according to claim 3, characterized in that: The end cover assembly comprises a second supporting rod (18) and a supporting upright rod (21); the left side of the second supporting rod (18) and the left side of the supporting upright rod (21) are both fixedly mounted on the right side of the door-shaped plate (25); the top of the second supporting rod (18) is fixedly mounted on the bottom of the supporting upright rod (21); the left side of the second supporting rod (18) and the left side of the supporting upright rod (21) are both fixedly mounted on the right side of the open exhibition box (16); a first threaded hole (28) is provided inside the supporting upright rod (21); a supporting shaft (27) is fixedly connected to one side of the supporting upright rod (21); the outer surface of the supporting shaft (27) and the top of the second supporting rod (18) are rotatably connected to a plate-shaped cover (24); The plate-shaped cover (24) is rotatably connected to the support rod (21), the plate-shaped cover (24) is movably connected to the door-shaped plate (25), the rear side of the plate-shaped cover (24) is fixedly connected to a handle (1), the front side and the rear side of the plate-shaped cover (24) are both provided with a second thread groove (29), the side of the support rod (21) away from the support shaft (27) is fixedly connected to a convex shaft (19), the outer surface of one end of the convex shaft (19) close to the support rod (21) and the other end of the convex shaft (19) away from the support rod (21) are rotatably connected to a connecting rod (22), the connecting rod (22) is rotatably connected to the support rod (21), and the internal thread of the connecting rod (22) is connected to a second screw rod (23).
6. A product exhibition and promotion device according to claim 1, 2 or 5, characterized in that: The first adjustment assembly comprises a connecting rod (13), the top of the connecting rod (13) is fixedly mounted on the bottom of the first convex plate (2), the front and rear sides of the connecting rod (13) are provided with limited position long grooves (12), one side of the bottom end of the connecting rod (13) is fixedly connected to a connecting square rod (30), and a side of the connecting rod (13) away from the connecting square rod (30) is provided with a plurality of third thread grooves (5).
7. A product exhibition and promotion device according to claim 4, characterized in that: The first adjustment assembly comprises a connecting rod (13), the top of the connecting rod (13) is fixedly mounted on the bottom of the first convex plate (2), the front and rear sides of the connecting rod (13) are provided with limited position long grooves (12), one side of the bottom end of the connecting rod (13) is fixedly connected to a connecting square rod (30), and a side of the connecting rod (13) away from the connecting square rod (30) is provided with a plurality of third thread grooves (5).
8. A product exhibition and promotion device according to claim 1, 2, 5 or 7, characterized in that: The second adjustment component comprises a supporting long tube (10), the bottom of the supporting long tube (10) is fixedly mounted on the top of the supporting plate (8), the supporting long tube (10) is slidably connected to the connecting vertical rod (13) and the connecting square rod (30), the top front inner side surface and the top rear inner side surface of the supporting long tube (10) are both fixedly connected to the limiting block (11), and the limiting block (11) is slidably connected to the limiting long groove (12).
9. A product exhibition and promotion device according to claim 6, characterized in that: The second adjustment component comprises a supporting long tube (10), the bottom of the supporting long tube (10) is fixedly mounted on the top of the supporting plate (8), the supporting long tube (10) is slidably connected to the connecting vertical rod (13) and the connecting square rod (30), the top front inner side surface and the top rear inner side surface of the supporting long tube (10) are both fixedly connected to the limiting block (11), and the limiting block (11) is slidably connected to the limiting long groove (12).
10. A product exhibition and promotion device according to claim 1, 2, 5, 7 or 9, characterized in that: The limiting assembly comprises a circular long plate (9), the bottom of the circular long plate (9) is fixedly mounted on the top of the supporting plate (8), the circular long plate (9) is fixedly connected to the supporting long tube (10), the circular long plate (9) is slidably connected to the connecting square rod (30), the front side and the rear side of the circular long plate (9) are fixedly connected to the circular long rod (7), the circular long rod (7) is fixedly connected to the supporting long tube (10), and the rod body of the circular long rod (7) is threadedly connected to a third screw rod (6).
Citation Information
Patent Citations
Museum product exhibition and propaganda device
CN214253692U