Safe platform convenient to assemble

Abstract

A safe platform convenient to assemble comprises a steel inner frame, a floor laid on the steel inner frame, a special-shaped piece connected to the periphery of the inner frame in a hung mode and a sectional material section, the two sides of the special-shaped piece are in butt joint with the end face of a sectional material, a clamping opening is formed in the inner side of the sectional material section, an angle plate is fixed to the periphery of the inner frame, and the sectional material section is fixed to the periphery of the inner frame through hanging of the clamping opening to the angle plate; the inner frame is formed by connecting a plurality of paragraphs. The touchable periphery of the platform is an arc-shaped curved surface or a vertical surface or a floor horizontal surface, the safety is kept to the maximum degree in the use process, the assembly procedures are reduced, the after-sales maintenance is extremely simple, and the social cost is greatly saved.

Description

Technical Field

[0001] This new invention relates to classroom supplies for primary and secondary schools, specifically a safe lectern that is easy to assemble. Background Technology

[0002] In primary and secondary school classrooms, the podium is placed on the floor below the blackboard, with one side against the wall. Teachers (especially those of shorter stature) stand on the podium to teach, allowing them to survey the entire class from a higher vantage point and monitor each student's learning progress in real time. However, the edges of current classroom podiums are generally sharp and even have sharp corners, which can cause accidental injuries to students and create long-term safety risks. In recent years, some newly built schools have eliminated the podium, a necessary but unfortunate measure for safety reasons. Although the podium is quite low, improper design can still become a significant factor affecting classroom safety.

[0003] While saving manufacturing costs, Chinese Patent 202421304568.8 (Classroom Safety Podium) provides a lectern with good safety features. It completely eliminates the hard edges and sharp corners inherent in traditional lecterns. When a student accidentally falls and his body or even his head hits the curved surface around the lectern, the impact energy is absorbed by the broken plastic components (extruded profiles, injection molded special parts), so as to greatly reduce the degree of injury to the human body. However, the assembly of the product assembly (designed as 202421304568.8) is not yet simplified. The replacement of damaged extruded profiles during after-sales service is extremely complicated. It requires removing all the floorboards and fastening screws from the top of the podium, extracting the steel strip embedded in the damaged profile's cavity and the damaged extruded profile itself, replacing it with a new one, reinserting the steel strip, re-tightening all the fastening screws, and then re-laying all the floorboards on the inner frame. Such time-consuming and labor-intensive repairs generally require the product supplier to send professionals to the customer's site. Therefore, not only is the product assembly process cumbersome (e.g., ensuring precise alignment of numerous fastening screw holes), resulting in high after-sales service costs, but the initial assembly cost is also already high. Summary of the Invention

[0004] The objective of this invention is to provide a classroom lectern that is safe to use and easy to maintain.

[0005] This novel design features a safe lectern that is easy to assemble. Its overall structure is symmetrical, comprising a steel inner frame assembled from parts, a floor laid horizontally above the inner frame, plastic irregular-shaped parts attached to the left and right corners of the inner frame, and profile sections connected to the vertical surfaces on both sides of the irregular-shaped parts. The outer side of the profile sections has an arc-shaped surface and a vertical surface from top to bottom. The inner side of the profile sections has a clamping opening, and corner plates are fixed to the outer perimeter of the inner frame. The profile sections are fixed to the outer perimeter of the inner frame by means of the clamping opening and the corner plates.

[0006] The upper and lower sides of the inner side of the profile section are provided with clamping openings, and the upper and lower corner plates are provided on the outer periphery of the inner frame.

[0007] The inner frame consists of several segments along its length, with adjacent segments connected by tubes or limiting brackets.

[0008] The lower part of the lectern is partially embedded in the inner frame and locked in place.

[0009] The outer surfaces of the profile sections and irregularly shaped parts are entirely covered by a flexible material padding layer.

[0010] High-strength steel corner plates are welded and fixed to the outer perimeter of the inner frame. The corner plates of the inner frame are hooked onto the clamps on the inner side of the profile section. Because the bottom of the profile section is in contact with the ground, it is only subjected to the weight of people stepping on it in daily life. Therefore, the position of the profile section in this design is stable, and its original hooking state will not be easily disengaged. The stability of the plastic irregular-shaped parts is similar to that of the profile section.

[0011] The inner frame is composed of several independent sections connected along its length. The segmentation of the inner frame facilitates loading and unloading during transportation and transporting the frame through hallways to classrooms in the customer's school.

[0012] The side of the inner frame that is attached to the wall where the blackboard is located can be spared the need for the profile section to be hung.

[0013] In this lectern design, apart from the side facade against the wall where the blackboard is located and the side facade section that may be obscured by the lower part of the lectern, the remaining sections are the outer surfaces of the assemblies of profile segments and irregular parts. Starting from the outer edge of the horizontal floor at the top of the lectern, the outer curved surfaces of each profile segment extend down to the vertical plane until they reach the ground. The outer curved, non-developable curved surfaces of the left and right irregular parts also extend down to the vertical curved surfaces until they reach the ground. The left and right vertical planes of each irregular part align with the end faces of its left and right profile segments.

[0014] It should be noted that this design allows for partial breakage of plastic profile sections and curved surfaces of irregularly shaped parts under strong impact, in order to absorb impact energy and reduce the degree of injury to the human body. Therefore, the replacement of randomly damaged parts is a normal requirement.

[0015] In school classrooms, teachers and students typically only interact with the curved surfaces, vertical surfaces, and the horizontal floor surface of this product. This design ensures maximum safety during use. The profile section standing on the ground has its clamps hooked onto the corner plates around the outer perimeter of the inner frame, achieving a reliable connection. This design eliminates the conventional screw-on connection method, not only reducing many processes in the workshop but also significantly simplifying initial assembly and after-sales maintenance for customers in different locations, greatly saving social costs. Attached Figure Description

[0016] Figure 1a-b represents two different designs for this podium. Figure 1c yes Figure 1b A visual representation of the area before the top floor is installed.

[0017] Figure 2a This is a visual diagram of the internal frame of the lectern in this design. Figure 2b This is a segmented diagram of the internal frame of the lectern in this design. Figure 2c -d are respectively Figure 2b Enlarged views of parts A and B in the middle. Figure 2e -f are respectively Figure 2a The middle corresponds to Figure 2c Enlarged view of local C and D constructed with -d.

[0018] Figure 3a yes Figure 2a A magnified view of part E in the middle. Figure 3b -c are respectively Figure 3a Enlarged views of parts F and G.

[0019] Figure 4a -d corresponds to Figure 2a Schematic diagrams of the irregularly shaped part E from different perspectives.

[0020] Figure 5a -b are respectively Figure 1c A visual representation of the partial structure at the right end of the podium from different perspectives. Figure 5c yes Figure 5a A visual representation of a steel pipe structure. Figure 5d -e are respectively Figure 5a The visual view and end face plan of profile A in the diagram. Figure 5f yes Figure 5a End plan view, Figure 5g Profile A is fitted in the direction indicated by arrow m. Figure 5c A schematic diagram of the insertion process of the upper and lower corner plates of the steel pipe structure.

[0021] Figure 6a -b are similar to Figure 5a -b: A visual representation of the partial structure of the right end of the podium from different perspectives. Figure 6c yes Figure 6a A visual representation of a steel pipe structure. Figure 6d -e are respectively Figure 6a A horizontal view and an end face plan of profile B. Figure 6f yes Figure 6a End plan view.

[0022] Figure 7a -b represents approximation Figure 5a -b is a visual representation of the partial structure of the right end of the podium from different perspectives. Figure 7c yes Figure 7a A visual representation of a steel pipe structure. Figure 7d -e are respectively Figure 7a A visual view and end face plan of medium profile C. Figure 7f yes Figure 7a End plan view, Figure 7g Profile C is fitted in the direction indicated by arrow n. Figure 7c A schematic diagram of the insertion process of the upper and lower corner plates of the steel pipe structure.

[0023] Figure 8a -b are similar to Figure 5a -b is a visual representation of the partial structure of the right end of the podium from different perspectives. Figure 8c yes Figure 8a A visual representation of a steel pipe structure. Figure 8d -e are respectively Figure 8a A visual view and end face plan of profile D. Figure 8f yes Figure 8a End plan view.

[0024] Figure 9a yes Figure 2b A magnified view of a portion of H. Figure 9b -d corresponds to Figure 9a The diagram shows the irregularly shaped component with the corner structure of the inner frame from different perspectives. Figure 9e yes Figure 9c A schematic diagram of the connection between irregularly shaped parts and steel arc strips.

[0025] Figure 10a This is a diagram of a lectern. Figure 10b yes Figure 10a A magnified view of part Q, Figure 10c is a schematic diagram of the combination of the lectern and a podium of this design.

[0026] Figure 11a This is a schematic diagram showing how adjacent segments of the inner frame are connected using limiting brackets. Figure 11b yes Figure 11a A magnified view of a local area P. Detailed Implementation

[0027] Example 1. The lectern in a typical Chinese primary and secondary school classroom is generally rectangular, with one side against the wall where the blackboard is located. If the teacher's desk is placed entirely on top of the lectern, the lectern's shape can be as follows: Figure 1a As shown; if the lectern is half-placed on the ground and half-embedded in the platform, then the platform shape can be as follows. Figure 1b As shown.

[0028] See Figure 1b -c: This design of the podium includes an inner frame (1) constructed of steel pipes and a floor (2) laid horizontally above the inner frame. This floor can be any type of outdoor or indoor flooring widely available on the market. (Comparison) Figure 2aand Figure 1c See also Figure 4a -d: A shaped component P (31) is attached to the corners of the inner frame (1) near the left and right ends. The upper part of the outer side of the shaped component P (31) is a non-developable curved surface (311), and the lower part is a developable curved upright surface (312). Profile A (41) is attached to the left, right, and near ends of the inner frame (1). The left and right end facades of the shaped component P (31) are precisely aligned with the end facades of profile A (41) (the outer circumference shapes of the two end faces are completely identical). See also Figure 5a and Figure 5d The outer side of profile A (41) consists of a developable curved surface (411) and a vertical plane (412) from top to bottom, with a smooth transition between the developable curved surface (411) and the vertical plane (412).

[0029] The aforementioned irregular part P (31) is obtained by injection molding, and the profile A (41) is obtained by plastic extrusion.

[0030] Overall, the lectern, which is not attached to the blackboard wall, is surrounded by several sections of profile A (41) and two irregularly shaped pieces P (31). The upper part of this enclosure is curved, while the lower part is vertical. The overall structure of the lectern is symmetrical on the left and right. See [reference needed]. Figure 1a -c.

[0031] See Figure 2a -b and Figure 3a The inner frame (1) is mainly welded from several steel pipes and steel arc strips (18 pieces). Figure 2a Taking the right section of the inner frame as an example: the top layer of the inner frame (1) has formed a closed loop, and its right end and the near side intersection are connected by upper and lower inclined pipes (15) welded together. The top surface of the upper inclined pipe (15) bears the gravity transmitted at the end of the floor (2) (see Figure 1b ); steel arc strips (18) are also welded to the vertical pipe at this location. See also Figure 3a -c ( Figure 3b -c is Figure 3a (Enlarged view of parts F and G), under the premise of laser cutting (pipe cutting), the horizontal tube c (13) has a pre-reserved plate head (131). See Figure 4b -d: The inner side of the irregular part P (31) is pre-set with an arc hook (313), and the bottom of the left and right facades is pre-set with a vertical opening (314). The arc hook (313) is hooked to the steel arc strip (18), and the vertical opening (314) is snapped to the board head (131). Since the podium is placed on the classroom floor, the irregular part P (31) at the corner of the inner frame (1) does not have any upward force (it may only get the stepping force of people's feet), so the above-mentioned irregular part P (31) is reliably hooked and positioned at the corner of the inner frame (1).

[0032] comprehensive Figure 2aand Figure 1c visible, Figure 5a -b means Figure 1c Partial structure at the right end of the podium. Figure 5c It expresses Figure 5a In the steel pipe structure, the upper ends of multiple vertical pipes (14) of equal height are welded to the bottom side of horizontal pipe a (11). The upper and lower horizontal pipes b (12) and c (13) are welded to the outer surfaces of the multiple vertical pipes (14), respectively. It can be seen that horizontal pipes a (11), b (12), and c (13) are integrated with the multiple vertical pipes (14). See also... Figure 5c The upper corner plate (16) welded to the upper side of the horizontal pipe a (11) is (or can be) an independent long piece. The upper horizontal main surface of the upper corner plate (16) is at the same height as the top surface of the inner frame (1) to ensure the horizontal laying and balanced stress of the floor (2). The lower corner plate (17) can be shorter than the upper corner plate (16) (the main purpose is to save materials). Multiple lower corner plates (17) are distributed and welded to the upper side of the horizontal pipe c (13). Since the horizontal pipe a (11) is already a component of the closed-loop structure of the top layer of the inner frame (1), the horizontal pipe b (12), the horizontal pipe c (13), and multiple vertical pipes (14), as well as the upper corner plate (16), multiple lower corner plates (17), and steel arc strips (18), have all become components of the inner frame (1). See Figure 2a -b and Figure 3a .

[0033] See Figure 5a , Figure 5d , Figure 5e Profile A (41) is a combination of an upper arc-shaped cavity and a lower rectangular cavity, which facilitates reliable material discharge and stable molding under extrusion production processes. The inner side of profile A (41) contains an upper clamp (413) and a lower clamp (414) respectively. When the upper and lower clamps are aligned with the upper corner plate (16) and the lower corner plate (17) at the same height, the upper and lower clamps (413 / 414) can be smoothly fitted onto the upper and lower corner plates (16 / 17), that is, profile A (41) can be smoothly hung on. Figure 5c Steel pipe structure, achieving Figure 5a -b Right-end state, please refer to the above socketing process. Figure 5g The middle arrow m indicates the direction it points to.

[0034] See Figure 2bThe steel pipe structure on the left side of the inner frame (1) is symmetrical to the steel pipe structure on the right side, meaning they have the same structural method. The steel pipe structure near the inner frame (1) (shown as two sections in the figure) has the same structural mode as the steel pipe structure on the right side of the inner frame (1), only the length may be different. Therefore, the insertion of the above profile A (41) into the steel pipe structure on the left side of the inner frame (1) and into the steel pipe structure near the inner frame (1) is exactly the same as the insertion of the above profile A (41) into the steel pipe structure on the right side of the inner frame (1). See the effect after all insertions are completed. Figure 1c .

[0035] The actual standard for blackboard length in Chinese middle school classrooms is 4000mm, and the blackboard length in primary school classrooms is no less than 3600mm. The length of the classroom podium needs to match this (to facilitate writing on the left and right sides of the blackboard for students who are not very tall). The podium length is usually set at 3600-3200mm. In order to save transportation costs and reduce the impact damage to the outer plastic parts during transportation, it is reasonable to transport different types of podium products to the customer's school classrooms and then complete the product assembly. In addition, for the convenience of loading and unloading the product and the convenience of moving it to the classrooms upstairs through narrow corridors in the customer's school, this design divides the inner frame (1) into several (e.g., 3) independent sections in the direction parallel to the blackboard. The weight of any section is suitable for a single person to carry, and the area and volume of any section are suitable for passage through the teaching stairwell. See Figure 2b .

[0036] Figure 2c -d is Figure 2b A magnified view of a portion of the image. Figure 2c In -d, a small vertical tube (19) (such as a 20mm×20mm square tube) is used to insert the large, upward-facing tube opening (such as a 25mm×50mm square tube) downwards. Figure 2b It is clearly possible to achieve tight interlocking between adjacent paragraphs of the inner frame. Figure 2c , Figure 2d The separation situation in the above-mentioned plug-in state is as follows: Figure 2e As shown by -f, it is Figure 2a The connection status between the left and middle frames (local). Figure 2b The connection method between the middle frame and the right frame is the same as above. The overall stability and reliability of the connected inner frame can fully meet the application requirements of the podium product.

[0037] See Figure 2b and Figure 10cIn this design, except for the side facade of the wall where the blackboard is located and the area that may be blocked or covered by the lower part of the lectern (5), the remaining outer perimeter side facade sections are all the outer surfaces of profile A (41) or irregular parts P (31) (tightly combined). That is, starting from the outer edge of the horizontal floor (2) at the top of the lectern, the developable curved surface (411) of each profile A (41) extends down to the vertical plane (412) until it reaches the ground. The non-developable curved surface (311) of the left and right irregular parts P (31) extends down to the curved vertical surface (312) until it reaches the ground. The left and right vertical planes of each irregular part P (31) are precisely aligned with the end face of its adjacent profile A (41). Therefore, in school classrooms, teachers and students only come into contact with the curved surface, vertical surface, and horizontal surface of the floor of the podium. When a person falls and a part of their body (such as the head or face) touches the podium, the potential damage will be greatly reduced because the sharp corners and hard edges are not touched.

[0038] See Figure 1a -c and combine Figure 2a , Figure 3a , Figure 4a -c, in the podium design shown below:

[0039] 1. When the irregular part P (31) is damaged by an accidental impact, pull the damaged part directly upward and discard it; then press the intact new irregular part (31) directly downward until it touches the ground. This completes the repair of the podium when the irregular part P (31) is damaged.

[0040] 2. When profile A (41) is accidentally damaged, replace it with a new profile A (41) according to the following steps:

[0041] ① Pull out the irregular part P (31) near the corner of the damaged part upwards (because the back of the podium is already against the wall where the blackboard is located, whether it is the profile A (41) at the left or right end, or the profile A (41) near the podium, it can only be pulled out from the nearest corner, and the podium as a whole does not move).

[0042] ②Hold the end of the profile A (41) visible at the corner and pull the damaged profile A (41) outward horizontally to release the clamps (413 / 414) from the upper and lower corner plates (16 / 17);

[0043] ③ Take a new, intact profile A (41) and insert it horizontally into the position of the original damaged profile A (41), so that the upper and lower clamps (413 / 414) clamp the upper and lower corner plates (16 / 17), see Figure 5f ;

[0044] ④ Reinsert the previously removed irregular part P (31) back into its original position (at the corner of the podium).

[0045] The repair task is now complete.

[0046] Damaged plastic parts of this product can be quickly replaced by ordinary staff members within the customer's school.

[0047] Figure 1a When the lectern shown is a complete profile A (41) on the near side, its assembly method is the same as above.

[0048] The assembly of the internal frame (1) and the podium product in this design is extremely simple. No screw holes are needed for any parts. On-site assembly in the classroom of the customer (especially customers in other locations) does not require screws, and subsequent maintenance does not require welding. Such a foolproof assembly is reliable and practical, and can save a lot of social costs.

[0049] The outer side of profile A (41) and the outer side of irregular part P (31) of the podium in this design can be completely covered by a flexible material pad. If a sofa fabric with a thick feel is selected as the flexible material pad, the human touch of the curved surface around the podium will be softer, and the protection effect when the human body tilts will be better.

[0050] Example 2. Summary Figure 2a and Figure 1c visible, Figure 6a -b constructs are equivalent to Figure 1c Right end of the podium Figure 6c It expresses Figure 6a In the steel pipe structure, the upper ends of multiple vertical pipes (14) of equal height are welded to the bottom side of horizontal pipe a (11), and the upper and lower horizontal pipes b (12) and c (13) are welded to the outer sides of the multiple vertical pipes (14), so the horizontal pipes a (11), b (12), c (13) and the multiple vertical pipes (14) are reliably integrated. See Figure 6c The independent long upper corner plate (16) is welded to the upper side of the horizontal tube a (11). The upper horizontal main surface of the upper corner plate (16) is at the same height as the top surface of the inner frame (1). Multiple lower corner plates (17) are discretely distributed and welded to the upper side of the horizontal tube c (13). The horizontal tube a (11) is a component of the closed-loop structure of the top layer of the inner frame. Therefore, the horizontal tube b (12), the horizontal tube c (13), and multiple vertical tubes (14), as well as the upper corner plate (16), multiple lower corner plates (17), and steel arc strips (18), all become components of the inner frame of this design. See Figure 2a -b and Figure 3a .

[0051] See Figure 6a , Figure 6d , Figure 6eProfile B (42) has upper and lower clamps (423 / 424) on its inner side. When the upper and lower clamps are aligned with the upper corner plate (16) and lower corner plate (17) at the same height, the upper and lower clamps (423 / 424) can be smoothly fitted onto the upper and lower corner plates (16 / 17), that is, profile B (42) can be smoothly hung on. Figure 6c Steel pipe structure, achieving Figure 6a For the -b state, the above socketing process can be found in [reference]. Figure 5g The middle arrow m indicates the direction it points to.

[0052] Comparison between this example and Example 1: ① In Example 1, the upper part of profile A (41) is an arc-edged cavity structure, and the middle and lower parts are rectangular cavities. Both of them are equipped with reinforcing ribs, resulting in good overall structural strength and facilitating the standard forming of profile A (41). However, in this example, the lower part of profile B (42) is only a single-layer plate, which increases the difficulty of shaping, but facilitates relatively rapid cooling during the hot extrusion process and improves production efficiency. ② Since the configuration of profile B (42) in this example has changed significantly compared to profile A (41) in Example 1, the so-called "horizontal tube b (12)" and "horizontal tube c (13)" in this example are no longer the specifications of horizontal tube b (12) and horizontal tube c (13) in Example 1, and have been reconfigured according to the allowable space.

[0053] Same as Example 1.

[0054] Example 3. Summary Figure 2a and Figure 1c visible, Figure 7a -b constructs are equivalent to Figure 1c Right end of the podium Figure 7c It expresses Figure 7a In the steel pipe structure, the upper ends of multiple vertical pipes (14) of equal height are welded to the bottom side of horizontal pipe a (11), and the upper and lower horizontal pipes b (12) and c (13) are welded to the outer sides of the multiple vertical pipes (14), so the horizontal pipes a (11), b (12), and c (13) are reliably integrated with the multiple vertical pipes (14). See also Figure 7c The independent long upper corner plate (16) is welded to the upper side of the horizontal tube a (11), and the upper horizontal main surface of the upper corner plate (16) is at the same height as the top surface of the inner frame; multiple lower corner plates (17) are discretely distributed and welded to the upper side of the horizontal tube c (13). The horizontal tube a (11) is a component of the closed-loop structure of the top layer of the inner frame, so the horizontal tube b (12), the horizontal tube c (13), and multiple vertical tubes (14), as well as the upper corner plate (16), multiple lower corner plates (17), and steel arc strips (18), all become components of the inner frame of this design. See Figure 2a -b and Figure 3a .

[0055] See Figure 7a , Figure 7d , Figure 7e The inner side of profile C (43) has upper and lower clamping openings (433 / 434) on the upper and lower sides respectively. When the upper and lower clamping openings are directly above the upper corner plate (16) and the lower corner plate (17), and profile C (43) is pressed down vertically, its upper and lower clamping openings (433 / 434) can be fitted onto the upper and lower corner plates (16 / 17) respectively, that is, profile C (43) can be smoothly hung on. Figure 7c Steel pipe structure, achieving Figure 7a For the -b state, please refer to the above socketing process. Figure 7g The middle arrow n indicates the direction.

[0056] Comparison of this embodiment with embodiments 1-2: ① Compared to profiles A (41) and B (42) in embodiments 1-2, the configuration of profile C (43) in this embodiment continues to change. Accordingly, the so-called "horizontal tube b (12)" and "horizontal tube c (13)" in this embodiment are no longer the specifications of horizontal tube b (12) and horizontal tube c (13) in embodiments 1-2, and have been reconfigured according to the allowable space. ② See Figure 7f The upper and lower clamps (433 / 434) of profile C fit the upper and lower corner plates (16 / 17) from top to bottom, while the upper and lower corner plates (16 / 17) of profiles A (41) and B (42) in Examples 1-2 fit the upper and lower corner plates (16 / 17) from the horizontal direction.

[0057] Same as Example 2.

[0058] Example 4. Summary Figure 2a and Figure 1c visible, Figure 8a -b constructs are equivalent to Figure 1c Right end of the podium Figure 8c It expresses Figure 8a In the steel pipe structure, the upper ends of multiple vertical pipes (14) of equal height are welded to the bottom side of horizontal pipe a (11), and the upper and lower horizontal pipes b (12) and c (13) are welded to the outer sides of the multiple vertical pipes (14), so the horizontal pipes a (11), b (12), and c (13) are reliably integrated with the multiple vertical pipes (14). See also Figure 8c The upper corner plate (16) is an independent long piece, welded to the upper side of the horizontal tube a (11). The horizontal top surface of the upper corner plate (16) is at the same height as the top surface of the inner frame (1) to ensure the horizontal laying and balanced stress of the floor (2). The lower corner plate (17) is relatively short compared to the upper corner plate (16). Multiple lower corner plates (17) are distributed and welded to the upper side of the horizontal tube c (13). The horizontal tube a (11) is a component of the closed-loop structure of the top layer of the inner frame. Therefore, the horizontal tube b (12), the horizontal tube c (13), and multiple vertical tubes (14), as well as the upper corner plate (16), multiple lower corner plates (17), and steel arc strips (18), all become components of the inner frame of this design. See Figure 2a-b and Figure 3a .

[0059] See Figure 8a , Figure 8d , Figure 8e The inner upper and lower sides of profile D (44) contain upper and lower clamping openings (443 / 444). When the upper and lower clamping openings are located directly above the upper corner plate (16) and the lower corner plate (17), profile D (44) is pressed down vertically, and its upper and lower clamping openings (443 / 444) are respectively fitted onto the upper and lower corner plates (16 / 17), that is, profile D (44) is smoothly hung on. Figure 8c Steel pipe structure, achieving Figure 8a For the -b state, please refer to the above socketing process. Figure 7g The middle arrow n indicates the direction.

[0060] Comparison of this embodiment with embodiments 1-3: ① Compared with profiles A (41), B (42), and B (42) in embodiments 1-3, the configuration of profile D (44) in this embodiment continues to change. Accordingly, the so-called "horizontal tube b (12)" and "horizontal tube c (13)" in this embodiment are no longer the specifications of horizontal tube b (12) and horizontal tube c (13) in embodiments 1-3, and have been reconfigured according to the allowable space. ② The similarity between this embodiment and embodiment 3 is that profile D (44) fits the upper and lower corner plates (16 / 17) from top to bottom, while profiles A (41) and B (42) in embodiments 1-2 fit the upper and lower corner plates (16 / 17) from the horizontal direction. Relatively speaking, this embodiment not only has a simpler profile D (44) configuration and saves more materials, but also makes after-sales maintenance of the product more convenient.

[0061] Same as Example 3.

[0062] See Figure 2a , Figure 1c and reference Figure 1a -b: The initial assembly of the lectern in this design, in this example, involves inserting two irregularly shaped parts P into the inner frame (1) near the corner from top to bottom, and inserting each section of profile D (44) into the left, right, and near sides of the inner frame (1) from top to bottom. The replacement of the damaged irregularly shaped parts () and profile D (44) after the sale of the product is essentially the same as the initial assembly of the product.

[0063] From a comprehensive perspective, this embodiment 4 is the best embodiment of this design.

[0064] Example 5. Compared to Figure 2a The construction of the corner of the inner frame (1) in part E can also be as follows: Figure 9a As shown: The vertical pipe at the corner is welded with upper and lower steel arc strips (18), and the corresponding irregular part R (32) structure is shown in the figure. Figure 9b-e, the upper part of the inner surface of the irregular part R (32) contains two small upper arc hooks (321) of equal height, and the middle part of the lower part contains a lower arc hook (322). When the irregular part R (32) is attached to Figure 9a At the corner of the inner frame (1) shown, two arc-shaped hooks (321) of equal height at the top are attached to the upper steel arc strip (18), and one arc-shaped hook (322) at the bottom is attached to the lower steel arc strip (18) (see...). Figure 9e ), obviously Figure 9b The irregular part R (32) shown in -d can still achieve qualified application.

[0065] Compared to Figure 9a The structure shown is... Figure 9b The positions of the upper and lower arc hooks (321 / 322) inside -d can be interchanged, and the application effect is the same before and after the interchange.

[0066] Figure 9a The corresponding is Figure 2b The corner structure of the inner frame is a magnified view of its local H.

[0067] Same as Example 4.

[0068] The following section continues to explain this design:

[0069] ①See Figure 2d , Figure 2f The inner frame legs were pre-drilled with upper and lower holes (φ4-6mm is sufficient); see [link / reference]. Figure 10a -b: The lower part of both sides of the lectern (5) has corresponding upper and lower holes (51 / 52) of the same size as above. When the lectern (5) is as Figure 10c When the lectern is partially embedded in the podium, the upper and lower holes of the leg tubes and the upper and lower holes (51 / 52) on both sides of the lectern (5) are connected by pins. Obviously, the lectern is very stable at this time, and the daily external forces applied to the lectern from all directions generally cannot push it over. The safety of this lectern is incomparable to that of current lecterns.

[0070] ②See also Figure 11a -b: If Figure 2b Without the help of Figure 2c The local structure indicated by -d can then be used locally. Figure 11a The structure shown is as follows: Figure 2b The side tube of the middle section of the inner frame (1) is mounted on the limiting bracket (7). Obviously, all adjacent sections of the inner frame (1) can still be easily and properly connected, and the same safety of the application is guaranteed.

[0071] ③The term “clamp” in this design is a general term, which specifically includes the clamps that are horizontally inserted into the upper and lower corner plates (17) in embodiments 1-2, and also includes the clamps that are vertically inserted into the upper and lower corner plates (17) in embodiments 3-4.

[0072] ④ In embodiments 1-4 of this design, the multiple vertical pipes (14) in the steel pipe structure around the inner frame (1) are all the same, and the horizontal pipes A (11) are all the same; most importantly, in each embodiment, the construction mode of the steel pipe structure at both ends of the inner frame (1) and the steel pipe structure on the near side is similar.

Claims

1. A safety lectern that is easy to assemble, its overall structure being symmetrical from left to right, comprising a steel inner frame assembled from splices, a floor laid horizontally above the inner frame, plastic irregular-shaped parts hanging at the left and right corners of the inner frame, and profile sections mating to the vertical surfaces on both sides of the irregular-shaped parts. The outer side of the profile sections has an arc-shaped surface and a vertical surface from top to bottom. Its characteristic is: The profile section has a clamp on the inside, and the corner plate is fixed on the outer periphery of the inner frame. The profile section is fixed on the outer periphery of the inner frame by means of the clamp and the corner plate.

2. The security podium of claim 1, wherein: The upper and lower sides of the inner side of the profile section are provided with clamping openings, and the upper and lower corner plates are provided on the outer periphery of the inner frame.

3. The security podium of claim 1, wherein: The inner frame consists of several segments along its length, with adjacent segments connected by tubes or limiting brackets.

4. The security podium of claim 1, wherein: The lower part of the lectern is partially embedded in the inner frame and locked in place.

5. The security podium of claim 1, wherein: The outer surfaces of the profile sections and irregularly shaped parts are completely covered by a flexible material padding layer.

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