Combined chemical experiment demonstration tool

Abstract

The utility model discloses a combined chemical experiment demonstration tool which comprises a bottom supporting assembly, a side plate assembly, a hand lifting assembly, a support assembly and a shockproof box assembly. The bottom supporting assembly is the bottom structure of the device and comprises a bottom plate and an upper supporting plate, the bottom plate and the upper supporting plate are each of a square flat plate structure, the upper supporting plate is arranged over the bottom plate and is spaced from the bottom plate, upper supporting plate positioning inserting holes are formed in the four corners of the bottom plate, protruding inserting heads are arranged at the four corners of the upper supporting plate, and the inserting heads are inserted into the inserting holes. The plug of the upper supporting plate is inserted into the upper supporting plate positioning insertion hole, so that the upper supporting plate and the bottom plate are fixedly connected, meanwhile, it is guaranteed that an installation gap exists between the upper supporting plate and the bottom plate, and flexible unfolding of the movable side plate is achieved through hinge joint of the hinge. Through the structure, the side plates can form a baffle structure when being unfolded, front-end shielding protection is provided for an experiment area, and equipment or an operation environment which is prone to interference in the experiment process is effectively protected.

Description

Technical Field

[0001] The utility model relates to the field of education or demonstration tools, in particular to a combined chemical experiment demonstration tool. Background Art

[0002] In middle school chemistry teaching, experiments are an important way to cultivate students' practical ability and deepen their theoretical understanding. However, traditional chemical experiments usually rely on a fixed laboratory environment, and the equipment is bulky and difficult to carry, making it difficult to meet the flexible and changing teaching needs. In some activities outside the classroom, such as outdoor experiments or teaching switching between different classrooms, teachers often face problems such as equipment that is inconvenient to carry and venue incompatibility. To solve this problem, portable multifunctional experimental devices came into being, which can be quickly installed and disassembled in different environments, greatly improving teaching efficiency and flexibility.

[0003] Existing portable chemical experiment devices typically consist of basic components such as labware, a heating unit, sensors, and storage areas for reagent bottles. These devices utilize modular designs, integrating various experimental units (such as acid-base neutralization and gas preparation) into a compact frame for easy transport and storage. Many existing technologies also feature foldable designs, allowing for quick storage after experiments are completed, reducing space requirements.

[0004] Although existing portable experimental devices have partially solved the needs of portability and flexibility, there are still some defects in their structural design. First, the protection measures against splashing of harmful substances during the experiment are not perfect, and some devices lack a special protective baffle design, which increases the safety risk of experimental operations. Even if some devices are equipped with baffles, the baffle structure is usually bulky, inconvenient to store, and difficult to adjust flexibly. And some devices designed with folding baffles have unstable bracket structures, making it difficult to maintain durability during frequent folding and unfolding, affecting the overall user experience of the device. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0006] A combined chemical experiment demonstration tool comprises a bottom support assembly, a side plate assembly, a handheld assembly, a bracket assembly and a shockproof box assembly;

[0007] The bottom support assembly is the bottom structure of the device, including a bottom plate and an upper support plate. Both the bottom plate and the upper support plate are square flat plate structures. The upper support plate is arranged directly above the bottom plate and the two are spaced apart from each other. Upper support plate positioning sockets are provided at the four corners of the bottom plate, and protruding plugs are provided at the four corners of the upper support plate. The plugs of the upper support plate are inserted into the upper support plate positioning sockets to achieve a fixed connection between the upper support plate and the bottom plate, while also ensuring that there is an installation gap between the two.

[0008] The side panel assembly is a frame-shaped structure as a whole. The side panel assembly is arranged on the outer side of the bottom support assembly. The side panel assembly consists of a fixed side panel and three movable side panels. The fixed side panel and the movable side panel are perpendicular to each other between the bottom panel. The bottom edge of the fixed side panel is fixedly connected to one side of the bottom panel, while the bottom edge of the movable side panel is movably fitted with the other three sides of the bottom panel. At the same time, an inserting plate is integrally formed on the side of the movable side panel that contacts the bottom panel, and the inserting plate is movably inserted into the position between the support plate and the bottom panel.

[0009] As a further solution of the present invention: More specifically, the frame-shaped structure of the side panel assembly is not a fixed form, wherein both side edges of the fixed side panel are hingedly connected to a movable side panel by hinges, and the movable side panel opposite to the fixed side panel is hingedly connected to the movable side panel on the right side of the fixed side panel by a hinge.

[0010] As a further solution of the present invention: the hand-carrying assembly includes a cross handle, with hooks integrally formed at the four corners of the cross handle, hook holes corresponding to the hooks are provided near the upper edges of the movable side panels and the fixed side panels, and the cross handle is also equipped with a handle.

[0011] As a further solution of the present invention: the shockproof box assembly includes a square box-shaped foam frame, in which a soft foam block is filled and installed, and a plurality of slots are grooved on the foam block. A plug-in connection structure is adopted between the foam frame and the upper support plate. A positioning plug is integrally formed on the bottom surface of the foam frame, and the upper support plate is provided with a foam frame positioning hole corresponding to the positioning plug.

[0012] As a further solution of the present invention: the bracket assembly includes a telescopic strut, which is locked after extension and retraction under the control of a tension knob, and a strut shaft perpendicular to the bottom of the telescopic strut is fixedly inserted through it, and both ends of the strut shaft are rotatably supported by a shaft seat; the shaft seat is fixed on the upper support plate, and a vertical positioning pin hole and a horizontal positioning pin hole are also provided on the shaft seat. A spring pin is provided at the bottom of the telescopic strut, and when the telescopic strut is in a vertical state, the spring pin bounces into the vertical positioning pin hole, and when the telescopic strut is in a horizontal state, the spring pin bounces into the horizontal positioning pin hole.

[0013] As a further solution of the present invention: the bracket assembly also includes a wheel assembly, which consists of a driven gear, a center shaft and a wheel. The wheel is arranged between the base plate and the upper support plate, and the wheel is fixedly sleeved on the center shaft. The bottom of the center shaft is rotatably mounted on the base plate based on the shaft seat. At the same time, a through hole is opened on the upper support plate for the center shaft to pass freely. The upper end of the center shaft passes through the through hole to the upper position of the upper support plate. At the same time, the driven gear is fixedly sleeved on the upper end of the center shaft, and the driven gear is meshed with the driving gear, and the driving gear is fixedly sleeved on one end of the support rod rotating shaft; and three connecting rods extending radially are fixed at the outer edge of the wheel, and the outer end of the connecting rod is integrally formed with a clockwise extending connecting rod. The extended arc-shaped rods are spaced apart from each other on their motion trajectories to form plug-in openings, and slots for the arc-shaped rods to be rotatably inserted are provided in the plug-in plates; when the telescopic struts are in a vertical state and the side panel assembly is sleeved on the outer side of the bottom support assembly, the plug-in plates are inserted into the plug-in openings between the arc-shaped rods; when the telescopic struts are adjusted to a horizontal state, the rotation of the rotating wheel causes the arc-shaped rods to be rotated so that the arc-shaped rods are inserted into the slots of the plug-in plates, and at this time, the arc-shaped rods and the plug-in plates form a locking structure, which can limit the expansion of the side panel assembly; on the contrary, when the telescopic struts are vertical, the arc-shaped rods and the plug-in plates are unlocked, and the side panel assembly can be expanded to form a front shielding baffle structure, which plays the role of front shielding protection.

[0014] The beneficial effects of the present invention are as follows: the bottom support assembly of the device adopts an upper and lower double-layer plate structure, which is fixed by jacks and plugs, thereby enhancing the overall stability. This structure not only improves the load-bearing capacity, but also facilitates the device to remain in a firm state during movement and carrying. The side panel assembly of the device adopts a design that combines fixed side panels with movable side panels, and realizes the flexible expansion of the movable side panels through hinges. Through this structure, the side panels can form a baffle structure when expanded, providing front-end shielding protection for the experimental area, effectively protecting equipment or operating environments that are susceptible to interference during the experiment. The core of the bracket assembly is a telescopic support rod, which uses a tension knob to control the length expansion and contraction. It is easy to operate and meets the requirements of different experimental heights. It is especially suitable for experimental equipment support that requires height adjustment in chemical experiments (such as acid-base neutralization experiments). In addition, the support rod is fixed vertically and horizontally by positioning pins, ensuring that the equipment is stable and not prone to shaking during the experiment; through the linkage design with the wheel gear system, the rotation of the telescopic support rod not only changes its own angle, but also can effectively control the expansion and storage of the side panels through the locking structure of the arc rod and the plug plate, further improving the stability of the experimental device; the design of the entire device takes into account the practicality in teaching, and is simple to operate. It does not require complicated tools or steps to complete the construction, adjustment and disassembly of the experimental device, which is especially suitable for multiple rapid demonstrations in teaching scenarios.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a schematic structural diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the utility model after the cross handle is removed.

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure after removing the foam frame.

[0020] Figure 4 yes Figure 3 Schematic diagram of the structure after removing the upper support plate.

[0021] Figure 5 yes Figure 4 Schematic diagram of the structure when the rotating wheel assembly and the plug plate are locked with each other.

[0022] Figure 6 yes Figure 4 Schematic diagram of the structure after the movable side panels are unfolded.

[0023] Figure 7 It is a schematic diagram of the bottom installation of the telescopic support rod.

[0024] In the figure: 1-bottom plate, 2-fixed side plate, 3-movable side plate, 4-hinge, 5-cross handle, 6-handle, 7-hook, 8-foam frame, 9-foam block, 10-slot, 11-upper support plate, 12-telescopic support rod, 13-elasticity knob, 14-support rod shaft, 15-shaft seat, 16-driving gear, 17-driven gear, 18-center axis, 19-foam frame positioning socket, 20-upper support plate positioning socket, 21-rotating wheel, 22-insertion plate, 23-arc rod, 24-connecting rod, 25-vertical positioning pin hole, 26-horizontal positioning pin hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 7 , shows a combined chemical experiment demonstration device in this embodiment, the combined demonstration device includes a bottom support assembly, a side panel assembly, a handheld assembly, a bracket assembly and a shockproof box assembly;

[0027] The bottom support assembly is the bottom structure of the device, including a bottom plate 1 and an upper support plate 11. Both the bottom plate 1 and the upper support plate 11 are square flat plate structures. The upper support plate 11 is arranged directly above the bottom plate 1 and the two are spaced apart from each other. Upper support plate positioning sockets 20 are provided at the four corners of the bottom plate 1, and protruding plugs are provided at the four corners of the upper support plate 11. The plugs of the upper support plate 11 are inserted into the upper support plate positioning sockets 20 to achieve a fixed connection between the upper support plate 11 and the bottom plate 1, while also ensuring that there is an installation gap between the two.

[0028] The side panel assembly is a frame-shaped structure as a whole. The side panel assembly is placed outside the bottom support assembly. The side panel assembly consists of a fixed side panel 2 and three movable side panels 3. The fixed side panel 2 and the movable side panels 3 are perpendicular to each other with the bottom panel 1. The bottom edge of the fixed side panel 2 is fixedly connected to one side of the bottom panel 1, while the bottom edge of the movable side panel 3 is movably fitted with the other three sides of the bottom panel 1. At the same time, an inserting plate 22 is integrally formed on the side of the movable side panel 3 that contacts the bottom panel 1. The inserting plate 22 is movably inserted into the position between the support plate 11 and the bottom panel 1.

[0029] More specifically, the square structure of the side panel assembly is not a fixed form, wherein both side edges of the fixed side panel 2 are hingedly connected to a movable side panel 3 through hinges 4, and the movable side panel 3 opposite the fixed side panel 2 is hingedly connected to the movable side panel 3 on the right side of the fixed side panel 2 through hinges 4; it can be seen that with the fixed side panel 2 as the fixed point, the movable side panels 3 on both sides thereof can be unfolded, and at the same time, the movable side panel 3 opposite the fixed side panel 2 can also be relatively unfolded with respect to the movable side panel 3 to which it is hinged. At this time, the fixed side panel 2 and the movable side panel 3 can be unfolded to form a baffle structure with a larger range, which is used to achieve a front shielding effect for the bottom support assembly.

[0030] The hand-carrying assembly includes a cross handle 5, and hooks 7 are integrally formed at the four corners of the cross handle 5. Hook holes corresponding to the hooks 7 are provided near the upper edges of the movable side panels 3 and the fixed side panels 2. By inserting the hooks 7 into the corresponding hook holes, the entire device can be lifted by the cross handle 5. The cross handle 5 is also equipped with a handle 6. The design of the handle 6 is also convenient for users to carry by hand. Of course, during the experiment, the hook 7 can be pressed to disengage it from the hook hole, so that the cross handle 5 can be quickly disassembled.

[0031] The shockproof box assembly includes a square box-shaped foam frame 8, which is filled with a soft foam block 9. The foam block 9 is grooved with a number of card slots 10. The card slots 10 are used to embed fragile experimental equipment such as beakers, test tubes, alcohol lamps and reagent bottles. The foam block 9 has a good wrapping effect on the above-mentioned fragile experimental equipment; a plug-in connection structure is adopted between the foam frame 8 and the upper support plate 11. A positioning plug is integrally formed on the bottom surface of the foam frame 8, and the upper support plate 11 is provided with a foam frame positioning hole 19 corresponding to the positioning plug. During the experiment, the foam frame 8 is removed from the upper support plate 11, and during the carrying process, the foam frame 8 is positioned and fixed on the upper support plate 11.

[0032] The bracket assembly is the core of the device. It not only supports the experimental demonstration process device, but also serves as a structural lock for the side panel assembly. The bracket assembly includes a telescopic support rod 12. The telescopic support rod 12 is actually a hard sleeve-type telescopic rod. The telescopic support rod 12 is locked after extension and contraction controlled by a tension knob 13. When the telescopic support rod 12 is erected and fixed, it is adjusted to a certain length, and the test tube clamp or bracket is clamped and fixed on the telescopic support rod 12 to realize the corresponding experiment, such as acid-base neutralization experiment. After the experiment, the test tube clamp or bracket and other structures can also be placed in the foam rack 8 for easy transportation.

[0033] A support rod shaft 14 perpendicular to the support rod is fixedly inserted at the bottom of the telescopic support rod 12, and both ends of the support rod shaft 14 are rotatably supported by the shaft seat 15; the shaft seat 15 is fixed on the upper support plate 11, and a vertical positioning pin hole 25 and a horizontal positioning pin hole 26 are also provided on the shaft seat 15. A spring pin is provided at the bottom of the telescopic support rod 12. When the telescopic support rod 12 is in a vertical state, the spring pin bounces into the vertical positioning pin hole 25. When the telescopic support rod 12 needs to be stored horizontally, the spring pin is pressed to disengage it from the vertical positioning pin hole 25, and the telescopic support rod 12 is rotated to a horizontal state so that the spring pin bounces into the horizontal positioning pin hole 26.

[0034] The bracket assembly also includes a wheel assembly, which is composed of a driven gear 17, a central shaft 18 and a wheel 21. The wheel 21 is arranged between the base plate 1 and the upper support plate 11, and the wheel 21 is fixedly sleeved on the central shaft 18. The bottom of the central shaft 18 is rotatably mounted on the base plate 1 based on the shaft seat. At the same time, a through hole is opened on the upper support plate 11 for the central shaft 18 to pass freely. The upper end of the central shaft 18 passes through the through hole to the upper position of the upper support plate 11, and the driven gear 17 is fixedly sleeved on the central shaft 1 8, and the driven gear 17 is meshed with the driving gear 16, and the driving gear 16 is fixedly sleeved on one end of the support rod shaft 14; from the above structure, it can be seen that the support rod shaft 14 and the central axis 18 are actually perpendicular to each other. When the telescopic support rod 12 rotates from horizontal to vertical, or from vertical to horizontal, the support rod shaft 14 can drive the driving gear 16 to rotate, thereby driving the driven gear 17 meshed with it to rotate, and the rotation of the driven gear 17 can then drive the central axis 18 and the rotating wheel 21 to rotate;

[0035] Three radially extending connecting rods 24 are fixed to the outer edge of the rotating wheel 21. The outer end of the connecting rod 24 is integrally formed with an arc-shaped rod 23 extending in the clockwise direction. The arc-shaped rods 23 are spaced apart from each other on their motion trajectory to form a plug-in opening. At the same time, a slot is provided in the plug-in plate 22 for the arc-shaped rod 23 to be rotatably inserted. When the telescopic support rod 12 is in a vertical state and the side plate assembly is sheathed at the outer position of the bottom support assembly, the plug-in plate 22 is inserted between the arc-shaped rods 23. When the telescopic support rod 12 is adjusted to a horizontal state, the arc rod 23 is rotated due to the rotation of the rotating wheel 21, so that the arc rod 23 is inserted into the slot of the plug plate 22. At this time, the arc rod 23 and the plug plate 22 form a locking structure, which can limit the expansion of the side panel assembly. On the contrary, when the telescopic support rod 12 is vertical, the arc rod 23 and the plug plate 22 are unlocked, and the side panel assembly can be expanded to form a front shielding baffle structure, which plays the role of front shielding protection.

[0036] The working principle of the present invention is as follows: the telescopic strut in the bracket assembly is the core of the device and is used to support experimental equipment. The telescopic strut is controlled by the tension knob to control its length and extension, and the height can be adjusted according to experimental requirements. The telescopic strut is connected to the shaft seat via the strut shaft. The shaft seat is provided with vertical and horizontal positioning holes, which cooperate with spring pins to achieve vertical or horizontal locking. When the telescopic strut needs to be adjusted to the horizontal state, press the spring pin to release the vertical lock, rotate the strut to the horizontal position, and the spring pin will automatically pop into the horizontal positioning hole to achieve horizontal locking, ensuring the stability of the bracket.

[0037] The bottom support assembly consists of a base plate and an upper support plate. The upper support plate is secured to the base plate's positioning sockets via plugs, forming a stable support structure. The side panel assembly includes fixed side panels and three movable side panels, which are hinged to allow flexible deployment. When protection is required for the experiment, the movable side panels can be deployed to form a baffle structure, providing frontal protection for the experimental area.

[0038] The telescopic struts are connected to a drive gear system via a strut shaft. When the telescopic struts rotate from vertical to horizontal, the shaft rotates the drive gear, which in turn engages with a driven gear, driving the rotating wheel. A radially extending connecting rod is fixed to the outer edge of the rotating wheel, with a curved rod attached to its end. During rotation, the curved rod inserts into a slot in the insert plate, forming a locking mechanism that limits the expansion of the side panel assembly and ensures the structural stability of the experimental setup.

[0039] The device provides stable support and safe protection for experimental equipment through bottom support, deployable side panels, adjustable and locking telescopic struts, and a rotating gear system and arc-shaped rod locking structure. Furthermore, the shock-resistant design enhances the device's portability and ease of use, making it suitable for a variety of chemical experiment demonstration scenarios.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A modular chemical experiment demonstration device, comprising a bottom support assembly, a side panel assembly, a handheld assembly, a bracket assembly, and a shockproof box assembly; The bottom support assembly is the bottom structure of the device, including a bottom plate and an upper support plate. Both the bottom plate and the upper support plate are square flat plate structures. The upper support plate is arranged directly above the bottom plate and the two are spaced apart from each other. Upper support plate positioning sockets are provided at the four corners of the bottom plate, and protruding plugs are provided at the four corners of the upper support plate. The plugs of the upper support plate are inserted into the upper support plate positioning sockets. The side panel assembly is a frame-shaped structure as a whole. The side panel assembly is placed outside the bottom support assembly. The side panel assembly consists of a fixed side panel and three movable side panels. The fixed side panel and the movable side panel are perpendicular to each other with the bottom panel. The bottom edge of the fixed side panel is fixedly connected to one side of the bottom panel, while the bottom edge of the movable side panel is movably fitted with the other three sides of the bottom panel. At the same time, an inserting plate is integrally formed on the side of the movable side panel that contacts the bottom panel, and the inserting plate is movably inserted into the position between the support plate and the bottom panel. The two sides of the fixed side panel are respectively hingedly connected to a movable side panel through hinges, and the movable side panel opposite to the fixed side panel is hingedly connected to the movable side panel on the right side of the fixed side panel through hinges; The bracket assembly includes a telescopic support rod, which is locked after extension and contraction controlled by a tension knob. A support rod rotating shaft perpendicular to the support rod is fixedly inserted at the bottom of the telescopic support rod, and both ends of the support rod rotating shaft are supported by a rotating shaft seat; the rotating shaft seat is fixed to the upper support plate; It is characterized by: The bracket assembly also includes a wheel assembly, which consists of a driven gear, a central shaft and a wheel. The wheel is arranged between the base plate and the upper support plate, and the wheel is fixedly sleeved on the central shaft. The bottom of the central shaft is rotatably mounted on the base plate based on the shaft seat. At the same time, a through hole is opened on the upper support plate for the central shaft to pass freely. The upper end of the central shaft passes through the through hole to the upper position of the upper support plate. At the same time, the driven gear is fixedly sleeved on the upper end of the central shaft, and the driven gear is meshed with the driving gear, and the driving gear is fixedly sleeved on one end of the support rod shaft; at the outer edge of the wheel Three connecting rods extending in a radial direction are fixed at the bottom, and an arc-shaped rod extending in a clockwise direction is integrally formed at the outer end of the connecting rod. The arc-shaped rods are spaced apart from each other on their motion trajectories to form plug-in openings, and slots for the arc-shaped rods to be rotatably inserted are provided in the plug-in plates; when the telescopic support rod is in a vertical state and the side plate assembly is positioned outside the bottom support assembly, the plug-in plates are inserted into the plug-in openings between the arc-shaped rods; when the telescopic support rod is adjusted to a horizontal state, the arc-shaped rods are rotated due to the rotation of the rotating wheel, so that the arc-shaped rods are inserted into the slots of the plug-in plates.

2. The combined chemical experiment demonstration tool according to claim 1, characterized in that: The hand-carrying assembly includes a cross handle, with hooks integrally formed at the four corners of the cross handle, hook holes corresponding to the hooks are provided near the upper edges of the movable side panels and the fixed side panels, and the cross handle is also equipped with a handle.

3. The combined chemical experiment demonstration tool according to claim 1, characterized in that: The shockproof box assembly includes a square box-shaped foam frame, which is filled with soft foam blocks. The foam blocks are grooved with several slots. A plug-in connection structure is adopted between the foam frame and the upper support plate. A positioning plug is integrally formed on the bottom surface of the foam frame, and the upper support plate is provided with a foam frame positioning hole corresponding to the positioning plug.

4. The combined chemical experiment demonstration tool according to claim 1, characterized in that: A vertical positioning pin hole and a horizontal positioning pin hole are also provided on the rotating shaft seat, and a spring pin is provided at the bottom of the telescopic support rod. When the telescopic support rod is in a vertical state, the spring pin bounces into the vertical positioning pin hole, and when the telescopic support rod is in a horizontal state, the spring pin bounces into the horizontal positioning pin hole.

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