Metal product protection device for metal product sales
Through the collaborative design of display components, protective components and drive components of metal product protection devices, the problem of independent display and storage functions is solved, and the automatic display and protection synchronization is achieved, and operation convenience and safety are improved.
Patent Information
- Application Number
- CN202510627634.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2025-07-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing metal product display device has independent display and storage functions, is complicated to operate, is inefficient, and is prone to scratches or loss during handling.
A metal product protection device is designed, through the coordinated operation of display components, protective components and driving components, the automatic coordination between the lifting and protective cover of the metal product display platform is realized, and the display and protection are carried out simultaneously.
It realizes convenient and unified operation of metal products display and protection, improves display effect, enhances safety protection performance, avoids complexity and failure of the electronic control system, and is suitable for environments where power is inconvenient or frequent movement is required.
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Figure CN120284095A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of protection devices, and particularly to a protection device for metal products used in the sale of metal products. Background Art
[0002] With the wide application of metal products in the fields of handicrafts, gifts, souvenirs, and high-end retail, their sales methods have gradually changed from traditional shelf display to display interactive devices. In the actual sales process, delicate metal products usually need to be displayed with professional display devices to enhance the visual attraction and display effect of the products, thereby promoting sales. However, the existing devices have the following problems:
[0003] Most of the existing devices manually place metal products on the display stand, and then manually remove and move them to the storage area after the display is over. This structure with independent display and storage functions is not only cumbersome to operate and inefficient, but also easily causes scratches, collisions, or loss of metal products during the handling process.
[0004] In view of these problems, we have designed a protection device for metal products used in the sale of metal products. Summary of the Invention
[0005] In view of the problems in the above or the prior art that the display and storage functions are independent of each other, which is not only cumbersome to operate and inefficient, but also easily causes scratches to metal products during the handling process, the present invention is proposed.
[0006] Therefore, the purpose of the present invention is to provide a protection device for metal products used in the sale of metal products.
[0007] To solve the above technical problems, the present invention provides the following technical solutions:
[0008] A protection device for metal products used in the sale of metal products, comprising: a housing assembly including a box shell; and, a display assembly including a protection box disposed inside the housing assembly and a bottom plate disposed inside the protection box; and, a driving assembly including a second connecting rod disposed on the outer wall of the bottom plate and a first connecting rod disposed at the other end of the second connecting rod; and, a protection assembly including a dust-proof plate disposed on the top of the protection box and a first support rod disposed on the outer wall of the dust-proof plate, the other end of the first support rod being connected to the first connecting rod; wherein, the rotation of the first connecting rod drives the bottom plate to lift through the second connecting rod, and at the same time drives the dust-proof plate to translate through the first support rod.
[0009] As a preferred embodiment of the protection device for metal products used in the sale of metal products of the present invention, wherein: the driving assembly further includes a handwheel rotatably disposed on the outer wall of the protection box, the end of the handwheel is connected to the end of the first connecting rod, and the outer wall of the box shell facing the handwheel is hollowed out and provided with a cabinet door.
[0010] As a preferred solution of the metal product protection device for the sale of the metal products of the present invention, wherein: the protection component further includes a second support rod hinged to the outer wall of the dust-proof plate, the other end of the second support rod is hinged to the outer wall of the protection box, and the first support rod and the second support rod are parallel to each other.
[0011] As a preferred solution of the metal product protection device for the sale of the metal products of the present invention, wherein: it further includes a positioning component, the positioning component includes a clamping block arranged on the bottom plate, a rotating table is arranged on the top surface of the bottom plate, the side view profile of the rotating table is a T-shaped profile, the upper end of the rotating table covers the clamping block, and the clamping block fits with the lower side wall of the rotating table.
[0012] As a preferred solution of the metal product protection device for the sale of the metal products of the present invention, wherein: a guiding groove facing the rotating table is opened on the outer wall of the bottom plate, the lower end of the clamping block is located inside the guiding groove and is slidably connected, a sliding rod is slidably arranged on the bottom surface of the bottom plate towards the clamping block, the inner end of the sliding rod is connected to the clamping block, and a pressing plate is arranged at the outer end of the sliding rod.
[0013] As a preferred solution of the metal product protection device for the sale of the metal products of the present invention, wherein: a support seat is connected to the bottom of the bottom plate, the sliding rod penetrates through the support seat movably, a spring is arranged between the pressing plate and the support seat, and the spring is wound around the outer surface of the sliding rod.
[0014] As a preferred solution of the metal product protection device for the sale of the metal products of the present invention, wherein: a moisture-proof block is arranged on the inner wall of the protection box, the inside of the moisture-proof block is hollow and ventilation holes are opened on the surface, a guiding groove for the moisture-proof block to penetrate is opened on the outer wall of the bottom plate, the pressing plate is located inside the guiding groove, and the surface of the moisture-proof block facing the pressing plate is an inclined surface.
[0015] As a preferred solution of the metal product protection device for the sale of the metal products of the present invention, wherein: two sets of driving components are arranged and symmetrically distributed on both sides of the protection box, a semi-toothed ring is connected to the outer wall of the handwheel, the semi-toothed rings on the two handwheels are meshed with each other, and a limiting rod is arranged on the outer wall of the protection box on the outer periphery of the semi-toothed ring.
[0016] As a preferred solution of the metal product protection device for the sale of the metal products of the present invention, wherein: two sets of protection components are arranged, the two protection components correspond to the two driving components, the two dust-proof plates are symmetrically distributed on both sides of the top of the protection box, and the two dust-proof plates are closed to cover the protection box.
[0017] As a preferred solution of the metal product protection device for metal product sales of the present invention, wherein: a square hole for the rotating table to pass through is provided on the top surface of the box shell above the protection box, a top cover is arranged above the top surface of the box shell, and the outer edge of the top cover protrudes from the side surface of the box shell.
[0018] Beneficial effects of the metal product protection device for metal product sales of the present invention: Through the coordinated operation of the display component, the protection component and the driving component, the present invention realizes the automatic coordination of the lifting of the metal product display platform and the opening and closing of the protection cover plate, truly achieving synchronous display and protection. Compared with the traditional structure that requires separate operation of the platform and the cover plate, the operation is more convenient, the effect is more intuitive and unified, without an electric control system, which is energy-saving and reliable, and is especially suitable for various display environments where it is inconvenient to connect electricity or frequent movement is required. Brief Description of the Drawings
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0020] Figure 1 It is a schematic diagram of the overall structure of the metal product protection device for metal product sales.
[0021] Figure 2 It is a schematic diagram of the structure of the protection component of the metal product protection device for metal product sales.
[0022] Figure 3 It is a schematic diagram of the structure of the protection box of the metal product protection device for metal product sales.
[0023] Figure 4 It is a schematic diagram of the structure of the driving component of the metal product protection device for metal product sales.
[0024] Figure 5 It is a schematic diagram of the structure of the positioning component of the metal product protection device for metal product sales.
[0025] Figure 6 It is a schematic diagram of the structure of the positioning component of the metal product protection device for metal product sales.
[0026] 1. Cabinet assembly; 11. Cabinet shell; 12. Square hole; 13. Cabinet door; 14. Top cover; 2. Display assembly; 21. Protection box; 22. Bottom plate; 23. Rotating table; 3. Protection assembly; 31. Dust-proof plate; 32. First support rod; 33. Second support rod; 4. Driving assembly; 41. Handwheel; 42. Half gear ring; 43. Limit rod; 44. First connecting rod; 45. Second connecting rod; 5. Positioning assembly; 51. Clamping block; 52. Guide groove; 53. Guide groove; 54. Support seat; 55. Slide rod; 56. Pressure plate; 57. Spring; 58. Moisture-proof block. Detailed implementation manner
[0027] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manner of the present invention with reference to the accompanying drawings of the specification.
[0028] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.
[0029] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it a separate or selectively exclusive embodiment from other embodiments.
[0030] Embodiment 1
[0031] Referring to Figures 1 to 6 , this is the first embodiment of the present invention. This embodiment provides a metal product protection device for metal product sales. Through the coordinated operation of the cabinet assembly 1, the display assembly 2, the protection assembly 3, and the driving assembly 4, when the metal product is displayed, the platform rises and the dust-proof plate 31 opens synchronously; when storing, the platform descends into the protection box 21 and the dust-proof plate 31 automatically closes, so as to realize the automatic switching between display and protection without relying on electricity or complex control.
[0032] Specifically, the cabinet assembly 1 includes a cabinet shell 11, and the cabinet shell 11 provides overall support and protection for the device; the display assembly 2 includes a protection box 21 arranged inside the cabinet assembly 1 and a bottom plate 22 arranged inside the protection box 21. Metal products can be placed on the bottom plate 22 for display to attract customers to watch for the purpose of sales. The protection box 21 is used for storing and protecting the bottom plate 22 and its metal products during non-display periods.
[0033] Further, the driving component 4 includes a second connecting rod 45 disposed on the outer wall of the bottom plate 22 and a first connecting rod 44 disposed at the other end of the second connecting rod 45. The second connecting rod 45 is rotatably hinged to the side wall of the bottom plate 22, and the first connecting rod 44 is also rotatably hinged to the other end of the second connecting rod 45.
[0034] The protection component 3 includes a dust-proof plate 31 disposed on the top of the protection box 21 and a first support rod 32 disposed on the outer wall of the dust-proof plate 31. The other end of the first support rod 32 is connected to the first connecting rod 44. The dust-proof plate 31 covers the protection box 21 during non-display periods to protect the metal products stored inside the protection box 21.
[0035] It should be noted that the rotation of the first connecting rod 44 drives the bottom plate 22 to lift and lower through the second connecting rod 45, and at the same time drives the dust-proof plate 31 to translate through the first support rod 32. The movement of the first connecting rod 44 drives the bottom plate 22 and the dust-proof plate 31 to move synchronously. The lifting and lowering of the bottom plate 22 realizes the exhibition and storage of the metal products in the protection box 21, and the translation of the dust-proof plate 31 realizes the covering and opening of the top opening of the protection box 21.
[0036] Among them, the driving component 4 further includes a handwheel 41 rotatably disposed on the outer wall of the protection box 21. The end of the handwheel 41 is connected to the end of the first connecting rod 44. The outer wall of the box shell 11 facing the handwheel 41 is hollowed out and provided with a cabinet door 13. The handwheel 41 is convenient for applying force, which is beneficial to controlling the rotation of the first connecting rod 44. The cabinet door 13 of the box shell 11 can be opened to directly control the handwheel 41, and the cabinet door 13 is closed to hide the handwheel 41, making the appearance more tidy.
[0037] Among them, the protection component 3 further includes a second support rod 33 hinged to the outer wall of the dust-proof plate 31. The other end of the second support rod 33 is hinged to the outer wall of the protection box 21. The first support rod 32 and the second support rod 33 are parallel to each other. The cooperation of the first support rod 32 and the second support rod 33 makes the dust-proof plate 31 the top side of a parallelogram. During the process of the change of the position of the first support rod 32, the dust-proof plate 31 is driven to translate, so as to realize the stable movement of the dust-proof plate 31 and achieve the covering and opening of the top opening of the protection box 21.
[0038] During use, the operator opens the cabinet door 13 on the cabinet shell 11 and rotates the handwheel 41 provided on the outer wall of the protection box 21. As the handwheel 41 rotates, the positional relationship between the second connecting rod 45 and the first connecting rod 44 changes from an angular state to a vertical state, and the combined height of the first connecting rod 44 and the second connecting rod 45 increases, thereby gradually lifting the bottom plate 22 to lift the metal product so that it is exposed outside the protection box 21 to complete the display action. At the same time, the first connecting rod 44 also drives the dust-proof plate 31 through the first support rod 32 and the second support rod 33 to move it horizontally to both sides synchronously, exposing the top opening of the protection box 21 to ensure that the metal product passes through to achieve the exhibition. When the display is over, the operator rotates the handwheel 41 in the reverse direction, and the bottom plate 22 immediately descends into the protection box 21, and the metal product is stably stored. At the same time, the dust-proof plate 31 also closes synchronously to cover the top opening again, effectively blocking the erosion of the outside world on the metal product. The entire operation process does not require power intervention and is not restricted by the environment.
[0039] In summary, the present invention realizes the automatic coordination of the display and storage processes. The user only needs to perform a single-point operation through the handwheel 41 to complete the lifting of the metal product and the opening of the cover plate, or the storage and the closing of the cover plate, without manually operating two components separately, reducing the probability of misoperation and significantly saving time. It not only improves the display effect of the product but also enhances its safety protection performance. At the same time, the mechanical drive avoids the defects of easy failure and complex maintenance of the electric device, ensuring good stability and reliability under long-term use. The automatic closing of the dust-proof plate 31 also effectively blocks the erosion of the outside world on the metal product and prolongs its storage time.
[0040] Embodiment 2
[0041] Referring to Figure 5 and Figure 6 , this is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a positioning component 5 for the metal product protection device for selling metal products, which solves the problem that the metal product is prone to displacement and collision due to the rotation of the rotating table 23 during storage.
[0042] Specifically, the positioning component 5 includes a clamping block 51 provided on the bottom plate 22. The top surface of the bottom plate 22 is provided with a rotating table 23. The side view of the rotating table 23 has a T-shaped contour. The upper end of the rotating table 23 covers the clamping block 51, and the clamping block 51 fits with the lower side wall of the rotating table 23. The metal product is placed on the top surface of the rotating table 23 for display and sale. The rotating table 23 can rotate relative to the bottom plate 22, which is beneficial for displaying different angles of the metal product to achieve the purpose of displaying and selling the metal product. The clamping block 51 can fix the rotating table 23 when the metal product is stored to prevent the rotating table 23 from rotating wantonly and causing the metal product to displace and slide.
[0043] The outer wall of the bottom plate 22 is provided with a guiding groove 52 facing the rotating table 23. The lower end of the clamping block 51 is located inside the guiding groove 52 and is slidably connected. A sliding rod 55 is slidably arranged on the bottom surface of the bottom plate 22 towards the clamping block 51. The inner end of the sliding rod 55 is connected to the clamping block 51, and the outer end of the sliding rod 55 is provided with a pressing plate 56. The pressing plate 56 drives the clamping block 51 to move along the guiding groove 52 through the sliding rod 55, so as to realize the clamping and release of the rotating table 23 by the clamping block 51. The movement of the clamping block 51 along the guiding groove 52 makes the trajectory controllable and the movement process more stable. The upper end of the rotating table 23 covers the clamping block 51, making the appearance of the bottom plate 22 more tidy and beautiful.
[0044] Furthermore, a support seat 54 is connected and arranged at the bottom of the bottom plate 22. The sliding rod 55 penetrates through the support seat 54 movably. A spring 57 is arranged between the pressing plate 56 and the support seat 54. The spring 57 is wound around the outer surface of the sliding rod 55. When the pressing plate 56 drives the clamping block 51 through the sliding rod 55, the spring 57 will be compressed. When the pressing plate 56 is released, it will reset under the action of the spring 57, enabling the clamping block 51 to have the function of automatic reset.
[0045] A moisture-proof block 58 is arranged on the inner wall of the protection box 21. The inside of the moisture-proof block 58 is hollow and its surface is provided with ventilation holes. The outer wall of the bottom plate 22 is provided with a guiding groove 53 for the moisture-proof block 58 to penetrate. The pressing plate 56 is located inside the guiding groove 53. The surface of the moisture-proof block 58 facing the pressing plate 56 is an inclined surface. The hollow inside of the moisture-proof block 58 can be filled with desiccant, which absorbs the moisture in the protection box 21 through the surface ventilation holes. When the metal product is stored, it is in a dry environment to avoid rusting. When the bottom plate 22 descends to complete the storage of the metal product, the moisture-proof block 58 passes through the guiding groove 53, and the pressing plate 56 inside it is gradually squeezed by the inclined surface of the moisture-proof block 58, thereby driving the clamping block 51 to complete the clamping and fixing of the rotating table 23, and the process is synchronized and automated.
[0046] All other structures are the same as those in Embodiment 1.
[0047] During use, the operator first raises the bottom plate 22 to the display state through the handwheel 41 in the first embodiment. The rotating table 23 is exposed at the top of the protection box 21, and the metal product can be placed on it for all-round rotation display. When storage is required, the operator rotates the handwheel 41 in the reverse direction, and the bottom plate 22 slowly descends into the protection box 21. During the descent process, the pressing plate 56 contacts the inclined surface of the moisture-proof block 58 in the guiding groove 53 and is gradually pushed, driving the clamping block 51 to move inward to realize the clamping and locking of the rotating table 23. After the clamping is completed, the rotating table 23 is fixed, ensuring the stable and safe storage of the metal product. At the same time, the desiccant in the moisture-proof block 58 continuously plays a moisture absorption role, enhancing the long-term storage performance of the metal product.
[0048] In summary, the embodiment is further optimized on the basis of the first embodiment by adding a positioning component 5. The rotating table 23 realizes the diversity of display angles, ensuring that the metal product has a 360-degree display ability during the display process. The positioning component 5 also ensures the automatic fixation of the rotating table 23 during the storage process, preventing the product from slipping or being impacted due to rotation. More importantly, the entire movement process is synchronized with the lifting process of the bottom plate 22, and the rotating table 23 can be locked while the bottom plate 22 descends without additional operations.
[0049] Embodiment 3
[0050] Referring to Figures 1 to 4 , this is the third embodiment of the present invention. Different from the previous embodiment, the structure of the drive component 4, the protection component 3 and the housing component 1 is further optimized in this embodiment, realizing higher structural stability and linkage accuracy, and improving the coordination of the overall movement.
[0051] Specifically, two sets of drive components 4 are provided and symmetrically distributed on both sides of the protection box 21. A semi-toothed ring 42 is connected to the outer wall of the handwheel 41, and the semi-toothed rings 42 on the two handwheels 41 are meshed with each other. A limiting rod 43 is provided on the outer wall of the protection box 21 on the outer periphery of the semi-toothed ring 42. By rotating any one of the handwheels 41, the other handwheel 41 can be driven to rotate synchronously through the meshing of the semi-toothed ring 42.
[0052] Two sets of protection components 3 are provided, and the two sets of protection components 3 correspond to the two sets of drive components 4. The two dust-proof plates 31 are symmetrically distributed on both sides of the top of the protection box 21. The two dust-proof plates 31 are closed to cover the protection box 21. The two dust-proof plates 31 avoid being too large in a single area, which is beneficial to hiding in the box shell 11.
[0053] A square hole 12 for the rotating table 23 to pass through is opened on the top surface of the box shell 11 above the protection box 21. A top cover 14 is provided above the top surface of the box shell 11. The outer edge of the top cover 14 protrudes from the side surface of the box shell 11. The top cover 14 effectively blocks the intrusion of external dust or liquid, ensuring the safety and cleanliness of the storage environment of the metal product.
[0054] The remaining structures are the same as those in Embodiment 2.
[0055] During use, the operator opens the cabinet door 13 on the box shell 11 and rotates any one of the handwheels 41. The other handwheel 41 can be driven to rotate synchronously through the meshing of the semi-toothed ring 42, realizing the coordinated action of the bilateral connecting rods, so that the bottom plate 22 rises steadily. At the same time, the two dust-proof plates 31 are translated and opened to expose the inside of the protection box 21 and the metal product displayed on the rotating table 23. During the display process, the bilateral structure ensures the stable lifting of the platform, avoids the tilt of the exhibition stand caused by unilateral force, and ensures the beautiful and professional display effect. The limiting rod 43 ensures that the rotation angle is controlled within a reasonable range to prevent damage to the device due to misoperation.
[0056] In summary, in this embodiment, by optimizing the driving component 4 to change from single-sided to double-sided and achieving synchronous linkage through the semi-toothed ring 42, the problems such as platform inclination and connecting rod jamming caused by unilateral operation in the past are effectively solved, and the overall operation stability of the device and the aesthetics of the display process are improved.
[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.
Claims
1. A metal product protection device for metal product sales, characterized in that, include: The casing assembly (1) comprises a casing (11); as well as, A display assembly (2), comprising a protection box (21) disposed inside the housing assembly (1) and a bottom plate (22) disposed inside the protection box (21); and, A driving assembly (4) comprising a second connecting rod (45) arranged on the outer wall of the bottom plate (22) and a first connecting rod (44) arranged at the other end of the second connecting rod (45); and A protection assembly (3) comprises a dustproof plate (31) arranged on the top of the protection box (21) and a first support rod (32) arranged on the outer wall of the dustproof plate (31), wherein the other end of the first support rod (32) is connected to the first connecting rod (44); wherein: The rotation of the first connecting rod (44) drives the bottom plate (22) to rise and fall via the second connecting rod (45), and simultaneously drives the dustproof plate (31) to move horizontally via the first supporting rod (32).
2. The metal product protection device for the sale of metal products according to claim 1, characterized in that: The driving assembly (4) also includes a hand wheel (41) rotatably arranged on the outer wall of the protection box (21), the end of the hand wheel (41) is connected to the end of the first connecting rod (44), and the outer wall of the box shell (11) facing the hand wheel (41) is hollowed out and provided with a cabinet door (13).
3. The metal product protection device for metal product sales according to claim 1, characterized in that: The protection assembly (3) further comprises a second support rod (33) hinged to the outer wall of the dustproof plate (31), the other end of the second support rod (33) being hinged to the outer wall of the protection box (21), and the first support rod (32) and the second support rod (33) being arranged in parallel.
4. The metal product protection device for metal product sales as described in claim 1, wherein: The invention also comprises a positioning assembly (5), wherein the positioning assembly (5) comprises a clamping block (51) arranged on a bottom plate (22), a rotating platform (23) being arranged on the top surface of the bottom plate (22), the rotating platform (23) having a T-shaped profile when viewed from the side, the upper end of the rotating platform (23) covering the clamping block (51), and the clamping block (51) being matched with the side wall of the lower end of the rotating platform (23).
5. The metal product protection device for metal product sales according to claim 4, characterized in that: The outer wall of the base plate (22) is provided with a guide groove (52) facing the rotating table (23); the lower end of the clamping block (51) is located inside the guide groove (52) and is slidably connected; a sliding rod (55) is provided on the bottom surface of the base plate (22) so as to slide toward the clamping block (51); the inner end of the sliding rod (55) is connected to the clamping block (51); and a pressing plate (56) is provided at the outer end of the sliding rod (55).
6. The metal product protection device for metal product sales according to claim 5, characterized in that: A support seat (54) is connected to the bottom of the base plate (22), and the slide rod (55) movably penetrates the support seat (54). A spring (57) is arranged between the pressure plate (56) and the support seat (54), and the spring (57) is wound around the outer surface of the slide rod (55).
7. The metal product protection device for metal product sales according to claim 6, characterized in that: The inner wall of the protection box (21) is provided with a moisture-proof block (58), the interior of the moisture-proof block (58) is hollow and the surface is provided with air holes, the outer wall of the bottom plate (22) is provided with a guide groove (53) for the moisture-proof block (58) to penetrate, the pressing plate (56) is located inside the guide groove (53), and the surface of the moisture-proof block (58) facing the pressing plate (56) is an inclined surface.
8. The metal product protection device for the sale of metal products according to claim 1, characterized in that: Two sets of the driving components (4) are provided and symmetrically distributed on both sides of the protection box (21). A semi-toothed ring (42) is connected to the outer wall of the handwheel (41). The semi-toothed rings (42) on the two handwheels (41) are meshed with each other. A limiting rod (43) is arranged on the outer wall of the protection box (21) on the outer periphery of the semi-toothed ring (42).
9. The metal product protection device for the sale of metal products according to claim 8, characterized in that: Two sets of the protection components (3) are provided. The two protection components (3) correspond to the two driving components (4). The two dust-proof plates (31) are symmetrically distributed on both sides of the top of the protection box (21). The two dust-proof plates (31) are closed to cover the protection box (21).
10. The metal product protection device for metal product sales according to claim 4, characterized in that: A square hole (12) for the rotating table (23) to pass through is formed in the top surface of the box shell (11) above the protection box (21). A top cover (14) is arranged above the top surface of the box shell (11). The outer edge of the top cover (14) protrudes from the side surface of the box shell (11).