A modular laboratory cabinet

Abstract

This application relates to an assembled laboratory cabinet, comprising: a base box and side panels, a front frame, and a back panel disposed on the base box; a first fixing device for connecting the side panels and the base box, including pulleys installed on the outer wall of the side panels near the top ends, a steel wire passing through the two pulleys, and a tightening member disposed on the outer wall of the base box, with each of the two free ends of the steel wire corresponding to a tightening member; the side panels are slidably connected to the front frame and to the back panel, and multiple connecting rods are connected to the bottom of the front frame and the back panel; a second fixing device for connecting the front frame and the back panel to the base box, including an adjustment component for inserting the connecting rods, angle rods hinged to both sides of the adjustment component, and a fixing rod hinged to the end of the angle rod away from the adjustment component; a first groove and a second groove are provided on the side wall of the base box for embedding the second fixing device, the fixing rod being embedded in the second groove, and the first groove and the second groove being connected. This application can improve the assembly efficiency of the laboratory cabinet.

Description

Technical Field

[0001] This application relates to the field of experimental equipment, and in particular to an assembled experimental bench. Background Technology

[0002] Laboratory benches are tables used by hospitals, schools, chemical plants, research institutes, and other enterprises and institutions for conducting experiments, testing, and storing instruments. Laboratory benches are generally made of high-quality cold-rolled steel sheets, which are cut, drilled, bent, and welded in a CNC machining center before being assembled by welding.

[0003] Laboratory benches are typically one-piece units, which cannot be divided, making them inconvenient for transportation and handling, especially large or long benches. Furthermore, integrated benches cannot be reused, resulting in high operating costs. To address this issue, a modular laboratory bench design has been developed, comprising several support cabinets, cabinet doors, interlocking slots, fine interlocking slots, support legs, anti-slip covers, and several drawers. By incorporating interlocking support cabinets, drawers, workbenches, instrument racks, and sink cabinets, different sizes and styles of laboratory benches can be assembled according to user needs. While this solves the previous problems, this type of bench has many parts and requires assembling numerous modules, compromising assembly efficiency. Summary of the Invention

[0004] To improve the assembly efficiency of laboratory cabinets, this application provides an assembled laboratory cabinet.

[0005] The assembled laboratory bench provided in this application adopts the following technical solution: An assembled laboratory bench cabinet includes: The bottom box and the side panels, front frame and back panel disposed on the bottom box; A first fixing device is used to connect the side plate and the bottom box. The first fixing device includes pulleys installed on the outer wall of the side plate near the top ends, a steel wire passing through the two pulleys, and a tightening member set on the outer wall of the bottom box. The two free ends of the steel wire correspond to one of the tightening members. The side panel is slidably connected to the front frame and to the back panel, and multiple connecting rods are connected to the bottom of the front frame and the back panel; A second fixing device is used to connect the front frame and the back plate to the bottom box respectively. The second fixing device includes an adjusting assembly for inserting the connecting rod, an angle rod hinged to both sides of the adjusting assembly, and a fixing rod hinged to the end of the angle rod away from the adjusting assembly. The bottom box has a first groove and a second groove on its side wall for the second fixing device to be embedded in. The fixing rod is embedded in the second groove, and the first groove and the second groove are connected.

[0006] By adopting the above technical solution, during installation, the base box is first placed on a level ground before assembling the experimental cabinet. First, install the two side panels. Thread the steel wire onto the pulleys, then align the bottom surface of the side panels with the top surface of the base box. Connect the two free ends of the steel wire to the tightening components, and then tighten the steel wire by screwing on the tightening components to ensure the fixation between the side panels and the base box. Next, slide the front frame into the two side panels. Simultaneously, insert the connecting rod into the adjusting assembly, causing the adjusting assembly to move downwards. This causes the angle rod to rotate clockwise around the adjusting assembly, gradually making the angle rod more horizontal. The increased length required by the angle rod pushes the fixing rod into the bottom of the second slot, which fixes the fixing rod. At this point, the bottom of the front frame abuts against the top of the base box, and the position of the front frame is fixed. Install the back panel according to the installation method of the front frame. Finally, the entire laboratory cabinet is installed. During assembly, only the two side panels, the front frame, and the back panel need to be installed, and only basic actions such as screwing and inserting are required to complete the installation, improving the assembly efficiency of the laboratory cabinet.

[0007] Optionally, the adjustment assembly includes a guide rod vertically installed at the bottom of the first groove, an installation rod passing through the guide rod and perpendicular to the guide rod, and connecting rings disposed at both ends of the installation rod. The connecting rod can pass through the connecting ring and drive the connecting ring to move. The angle rod is respectively hinged to both ends of the two connecting rings, and a compression spring is disposed between the angle rod and the fixed rod.

[0008] By adopting the above technical solution, when it is necessary to fix the front frame or back panel to the bottom box, the connecting rod is inserted into the connecting ring. As the front frame or back panel gradually moves downward, the mounting rod slides downward on the guide rod at the same time, and the connecting ring also moves downward. Due to the connection of the mounting rod, the movement trajectory of the connecting ring is restricted to a vertical descent. While the connecting ring is descending, it pushes the angle rods on both sides, causing the angle rods to rotate around the hinge point with the connecting ring. The angle between the angle rod and the bottom of the first groove gradually decreases. The angle rod squeezes the compression spring, and the compression spring pushes the fixing rod. The fixing rod moves into the second groove, thereby fixing the front frame or back panel to the bottom box.

[0009] Optionally, the angle between the angle rod and the bottom of the first groove is an acute angle, the angle between the compression spring and the angle rod is an obtuse angle, the compression spring and the fixed rod are placed on the same straight line, and when the connecting ring moves to the bottom of the first groove, the fixed rod and the angle rod form a flat angle.

[0010] By adopting the above technical solution, the connecting ring can only move downwards under the drive of the connecting rod. This can only be guaranteed if the angle between the angle rod and the bottom of the first groove is acute. The effective distance mapped by the angle rod on the horizontal plane gradually increases, thus ensuring that the fixed rod is pushed towards the bottom of the second groove rather than pulled. Finally, the angle rod is completely horizontal, and its total length is its effective length, pushing the fixed rod to its farthest position.

[0011] Optionally, the interior of the second groove is provided with a rubber plug through which the fixing rod passes. The rubber plug has a perforation. The perforation on the side of the rubber plug that contacts the bottom of the second groove is open. The rubber plug includes a first plug that is clearance-fitted with the fixing rod and a second plug that is interference-fitted with the fixing rod. When the fixing rod is inserted into the rubber plug, the outer surface of the second plug is tightly fitted to the groove wall of the second groove.

[0012] By adopting the above technical solution, the rubber plug can completely fix the position of the fixing rod. When the fixing rod moves towards the bottom of the second groove, it can be inserted into the perforation of the rubber plug. The first plug and the fixing rod have a clearance fit, and the friction between them is small. The function of the first plug is to pre-fix the fixing rod and increase the insertion speed of the fixing rod while fixing it, thereby improving installation efficiency. The second plug and the fixing rod have an interference fit, which increases the friction between them. When the fixing rod is inserted into the second plug, the second plug is supported, and its outer surface fits tightly against the groove wall of the second groove. The positions of the fixing rod and the rubber plug are fixed simultaneously.

[0013] Optionally, the upper surface of the rubber stopper is fixed with a plurality of protrusions, which are spaced apart along the length of the rubber stopper.

[0014] By adopting the above technical solution, setting multiple protrusions on the surface of the rubber stopper has two advantages. First, the protrusions increase the friction between the rubber stopper and the wall of the second groove, ensuring the rubber stopper's position when the front frame and back panel are not connected to the bottom box, minimizing any displacement of the rubber stopper, and reducing the possibility of the fixing rod failing to insert smoothly. Second, once the fixing rod is inserted, the outer wall of the second stopper fully abuts against the wall of the second groove; the protrusions also increase friction with the second groove wall, better securing the front frame and back panel.

[0015] Optionally, the rubber stopper has a trapezoidal cross-section, the diameter of the first stopper is smaller than the diameter of the second stopper, and the diameter of the perforation at the first stopper is larger than the diameter of the perforation at the second stopper.

[0016] By adopting the above technical solution, when the fixing rod is inserted into the rubber plug, in order to increase the contact area between the fixing rod and the inner wall of the rubber plug, the diameter of the rubber plug gradually decreases from the first plug to the second plug, so that the end of the fixing rod can be better fixed. In addition, the diameter of the second plug is larger than that of the first plug, so that when the fixing rod is inserted into the second plug, it can be guaranteed to make complete contact with the groove wall of the second groove, and completely fix the relative position between the fixing rod and the rubber plug.

[0017] Optionally, the tightening member includes a threaded rod that passes through the bottom box and a tip fixed to one end of the threaded rod, the free end of the steel wire passing through the threaded rod, and the threaded rod being threaded.

[0018] By adopting the above technical solution, when it is necessary to install the side panel and the bottom box together, first, the free end of the steel wire is threaded onto the threading rod, and the middle part of the steel wire is placed on the pulley. Then, the side panel and the side of the bottom box are aligned, and the tip of the threading rod is aligned with the side of the bottom box. At the same time, the two threading rods are screwed on so that the threads on the threading rods pass through the bottom box. Continue until the steel wire is completely taut and there is no extra space to tighten, which means that the side panel and the bottom box are completely and stably connected.

[0019] Optionally, each of the side panels, the front frame, and the back panel is connected to a top panel at its upper end. After the side panels, the front frame, and the back panel are installed, each top panel is spliced ​​together, and a connecting component is provided at one corner of each top panel near the central axis of the experimental cabinet.

[0020] By adopting the above technical solution, the top panel is designed to protect the top of the laboratory cabinet. Dividing the top panel into several sections, which are connected to the side panels, front frame, and back panel respectively, facilitates installation. Once the side panels, front frame, and back panel are installed together, the top panel can be directly joined without further special installation, further improving the installation efficiency of the laboratory cabinet. The connecting components also increase the stability of the connections between the various top panels.

[0021] Optionally, the connecting assembly includes a hollow circular component mounted on one of the top plates, a pull-out component mounted inside the hollow circular component, and a handle mounted on the pull-out component, wherein the pull-out component is slidably connected to the hollow circular component.

[0022] By adopting the above technical solution, the connection component can increase the connection strength between multiple top panels. When it is necessary to connect the top panels more tightly, pull the handle to pull out the pull-out piece. The pull-out piece circles around the joint of each top panel, and at the same time, the pull-out piece contacts the inner edge of the top panel. Finally, the pull-out piece and the hollow circular piece form a complete circle, connecting each top panel together.

[0023] Optionally, the two ends of the hollow circular component are the starting end and the ending end of the pull-out component, respectively, and the two ends of the hollow circular component are respectively provided with mounting grooves for the handle to be inserted.

[0024] By adopting the above technical solution, a handle is provided to facilitate the movement of the pull-out component. Since the handle is protruding, an installation groove is opened at the end of the hollow circular component. When the pull-out component is driven by the handle, it slides through the hollow circular component and eventually slides from one end of the hollow circular component around the outer ring to the other end, and is embedded in the hollow circular component again. Finally, the handle is embedded in the installation groove at the end. Since the side of the pull-out component is tilted when it is finally embedded in the hollow circular component, the installation groove restricts the position of the handle, thereby restricting the position of the pull-out component and fixing the top plate more firmly.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The system consists of a base box, side panels, front frame, back panel, first fixing device, pulleys, tightening parts, steel wire, connecting rod, second fixing device, adjusting components, connecting ring, angle rod, fixing rod, first groove, and second groove. During installation, the base box is first placed on a level surface, and then the experimental cabinet is assembled. First, install the two side panels. Thread the steel wire onto the pulleys, then align the bottom surface of the side panels with the top surface of the base box. Connect the two free ends of the steel wire to the tightening components, and then tighten the steel wire by screwing on the tightening components to ensure the fixation between the side panels and the base box. Next, slide the front frame into the two side panels. At the same time, insert the connecting rod into the adjusting assembly, causing the adjusting assembly to move downwards. This causes the angle rod to rotate clockwise around the adjusting assembly, gradually making the angle rod more horizontal. The increased length required by the angle rod pushes the fixing rod into the bottom of the second slot, which fixes the fixing rod. At this point, the bottom of the front frame abuts against the top of the base box, and the position of the front frame is fixed. Install the back panel according to the installation method of the front frame. Finally, the overall installation of the laboratory cabinet is completed. During assembly, only the two side panels, the front frame, and the back panel need to be installed. Only basic actions such as screwing and inserting are required to complete the installation, improving the assembly efficiency of the laboratory cabinet. 2. By setting up through rods and tips, when it is necessary to install the side panel and the bottom box together, first thread the free end of the steel wire onto the through rod, and place the middle part of the steel wire on the pulley. Then align the side panel with the side of the bottom box, align the tip of the through rod with the side of the bottom box, and simultaneously tighten both through rods so that the threads on the through rods pass through the bottom box. Continue until the steel wire is completely taut and there is no extra space to tighten, which means that the side panel and the bottom box are completely and stably connected. 3. By incorporating top panels, connecting components, hollow circular parts, pull-out components, handles, and mounting slots, the connecting components increase the connection strength between multiple top panels. The top panels protect the top of the laboratory cabinet. Dividing the top panel into several sections, each connecting to the side panels, front frame, and back panel, facilitates installation. Once the side panels, front frame, and back panel are installed, the top panel can be directly joined without further installation, further improving the installation efficiency of the laboratory cabinet. The connecting components increase the stability of the connection between the top panels. Handles are provided to facilitate the movement of the pull-out components. Due to the protruding handles, mounting slots are created at the ends of the hollow circular parts. When a tighter connection of the top panels is needed, pulling the handle extends the pull-out component. The pull-out component circles around the joint of each top panel, contacting the inner edge of the top panel. Ultimately, the pull-out component and the hollow circular part form a complete circle, connecting each top panel together. Finally, the handle slides from one end of the hollow round piece around the outer ring to the other end and is re-embedded in the hollow round piece. Finally, the handle is re-embedded in the mounting groove at the end. Because the side of the pull piece is tilted when it is finally embedded in the hollow round piece, the mounting groove restricts the position of the handle, thereby restricting the position of the pull piece and fixing the top plate more firmly. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application.

[0027] Figure 2 This is a schematic diagram of the overall structure of the tightening component in this application.

[0028] Figure 3 This is a cross-sectional structural diagram of the second fixing component of this application.

[0029] Figure 4 Figure 3 A magnified structural diagram of point A in the middle.

[0030] Figure 5 Top view of the overall structure of this application.

[0031] Figure 6 This application presents a schematic diagram of the overall structure of the connecting components.

[0032] Explanation of reference numerals in the attached drawings: 1. Base box; 2. Side panel; 3. Front frame; 4. Back panel; 5. First fixing device; 51. Pulley; 52. Tightening component; 521. Through rod; 522. Tip; 53. Steel wire; 6. Connecting rod; 7. Second fixing device; 71. Adjustment assembly; 711. Guide rod; 712. Mounting rod; 73. Connecting ring; 74. Angle rod; 75. Fixing rod; 8. First groove; 9. Second groove; 10. Compression spring; 11. Rubber plug; 111. First plug; 112. Second plug; 12. Perforation; 13. Protrusion; 14. Top plate; 15. Connecting assembly; 151. Hollow round part; 152. Pull-out part; 153. Handle; 16. Mounting groove. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] This application discloses an assembled experimental cabinet.

[0035] Reference Figure 1 An assembled experimental cabinet includes a base box 1, side panels 2 on both sides of the base box 1, a front frame 3 on the front side of the base box 1, and a back panel 4 on the rear side of the base box 1. The front frame 3 is used to observe the situation inside the experimental cabinet. The side panels 2 and the front frame 3 are slidably connected, as are the side panels 2 and the back panel 4.

[0036] The side panel 2 and the base box 1 are connected by a first fixing device 5. The first fixing device 5 includes multiple pulleys 51 installed on the outer wall of the side panel 2 near the top ends, two tightening members 52 passing through the side wall of the base box 1, and steel wires 53 with their free ends connected to the two tightening members 52 respectively. The steel wires 53 are also lapped on the multiple pulleys 51. The multiple pulleys 51 are provided to ensure that the steel wires 53 are taut while preventing them from derailing. However, providing more pulleys 51 would increase the number of steps required to install the steel wires 53. This application uses two pulleys 51 as an example for explanation.

[0037] During installation, first place the base box 1 on a level surface and begin assembling the experimental cabinet. First, install the two side panels 2. First, lay the steel wire 53 on the two pulleys 51 simultaneously. Then, align the bottom surface of the side panel 2 to be installed with the top surface of the base box 1. Thread the two free ends of the steel wire 53 through the two tightening parts 52 respectively. Then, tighten the steel wire 53 by screwing the tightening parts 52, thereby fixing the side panel 2 to the base box 1.

[0038] Reference Figure 1 and Figure 2The tightening member 52 includes a through rod 521 that passes through the bottom box 1 and a tip 522 fixed to one end of the through rod 521. The tip 522 allows the tightening member 52 to pass through the side wall of the bottom box 1. At the same time, the through rod 521 is threaded, and the free end of the steel wire 53 passes through the through rod 521. When the through rod 521 is screwed, the steel wire 53 can be tightened or loosened.

[0039] When it is necessary to install the side plate 2 and the bottom box 1 together, first thread the free end of the steel wire 53 onto the threading rod 521, with the middle part of the steel wire 53 resting on the pulley 51. Then align the side plate 2 with the side of the bottom box 1, align the tip 522 of the threading rod 521 with the side of the bottom box 1, and simultaneously screw on both threading rods 521 so that the threads on the threading rods 521 pass through the bottom box 1. Continue until the steel wire 53 is completely taut and there is no extra space to tighten, which means that the side plate 2 and the bottom box 1 are completely and stably connected.

[0040] Reference Figure 3 Multiple connecting rods 6 are connected to the bottom of the front frame 3 and the back plate 4. The front frame 3 and the bottom box 1, as well as the back plate 4 and the bottom box 1, are connected by the connecting rods 6 and the second fixing device 7. The second fixing device 7 includes an adjustment component 71 connected to the connecting rods 6, angle rods 74 hinged to both sides of the adjustment component 71, and a fixing rod 75 hinged to the end of the two angle rods 74 away from the adjustment component 71. The bottom box 1 has a first groove 8 and a second groove 9 for installing the second fixing device 7. The first groove 8 and the second groove 9 are identical and perpendicular to each other. The bottom of the first groove 8 and the wall of the second groove 9 are on the same plane.

[0041] Since the installation methods of the front frame 3 and the back panel 4 are the same, this application will only describe the installation method of the front frame 3 as an example. During installation, the front frame 3 is slidably inserted into the side panels 2. At the same time, the connecting rod 6 is inserted into the adjusting assembly 71, causing the adjusting assembly 71 to move downward, thereby driving the angle rod 74 to rotate clockwise around the adjusting assembly 71. This causes the projection length of the angle rod 74 onto the horizontal plane, i.e., the effective length, to gradually increase. The angle rod 74 gradually approaches horizontal and eventually reaches a horizontal state. The increased length required by the angle rod 74 pushes the fixing rod 75 towards the bottom of the second groove 9, while the second groove 9 fixes the position of the fixing rod 75. At this time, the bottom of the front frame 3 abuts against the top of the bottom box 1, and the position of the front frame 3 is fixed. The back panel 4 is then installed according to the installation method of the front frame 3.

[0042] The installation of the aforementioned side panel 2, front frame 3, and back panel 4 ultimately achieves the overall installation of the laboratory cabinet. During assembly, only the two side panels 2, front frame 3, and back panel 4 need to be installed, and only basic actions such as screwing and inserting are required to complete the installation, thus improving the assembly efficiency of the laboratory cabinet.

[0043] The adjustment assembly 71 includes a guide rod 711 fixedly connected to the bottom of the first groove 8 perpendicularly, an installation rod 712 perpendicular to and slidably connected to the guide rod 711, and a connecting ring 73 fixedly connected to both ends of the installation rod 712. The diameter of the connecting rod 6 matches the inner diameter of the connecting ring 73, so that the connecting rod 6 can pass through the connecting ring 73 and drive the connecting ring 73 to move.

[0044] Meanwhile, the angle rods 74 are hinged to both ends of the two connecting rings 73, and a compression spring 10 is fixed between the angle rods 74 and the fixed rod 75. When the angle rods 74 move, they can compress the compression spring 10. When it is necessary to separate the front frame 3 and the bottom box 1, the compression spring 10 generates a spring force on the angle rods 74. Under normal conditions, the angle between the angle rods 74 and the bottom of the first groove 8 is an acute angle, and the angle between the compression spring 10 and the angle rods 74 is an obtuse angle. The compression spring 10 is parallel to the bottom of the first groove 8, and the compression spring 10 and the fixed rod 75 are on the same straight line. When the connecting ring 73 moves to the bottom of the first groove 8, the fixed rod 75 and the angle rods 74 form a flat angle.

[0045] Driven by the connecting rod 6, the connecting ring 73 can only move downwards. This can only be guaranteed if the angle between the angle rod 74 and the bottom of the first groove 8 is acute. The effective distance mapped by the angle rod 74 on the horizontal plane gradually increases, thus ensuring that the fixed rod 75 is pushed towards the bottom of the second groove 9 instead of pulled. Finally, the angle rod 74 is completely horizontal, and its total length is its effective length, pushing the fixed rod 75 to its furthest position. When it is necessary to fix the front frame 3 or back plate 4 to the bottom box 1, insert the connecting rod 6 into the connecting ring 73. As the front frame 3 or back plate 4 gradually moves downward, the mounting rod 712 slides downward on the guide rod 711 at the same time, and the connecting ring 73 also moves downward. Due to the connection of the mounting rod 712, the movement trajectory of the connecting ring 73 is restricted to a vertical descent. While the connecting ring 73 is descending, it pushes the angle rods 74 on both sides, causing the angle rods 74 to rotate around the hinge point with the connecting ring 73. The angle between the angle rods 74 and the bottom of the first groove 8 gradually decreases. The angle rods 74 compress the compression spring 10, and the compression spring 10 pushes the fixing rod 75. The fixing rod 75 moves into the second groove 9, thereby fixing the front frame 3 or back plate 4 to the bottom box 1.

[0046] Reference Figure 3 and Figure 4The second groove 9 has a rubber plug 11 for the fixing rod 75 to pass through. The rubber plug 11 is arranged along the length of the second groove 9 and has a through hole 12 for the fixing rod 75 to pass through. To facilitate the contact between the rubber plug 11 and the bottom of the second groove 9, the through hole 12 is open, that is, the bottom wall of the through hole 12 is cut along the length to achieve communication with the first groove 8. The cross-section of the rubber plug 11 is trapezoidal. The rubber plug 11 includes a first plug 111 that is clearance-fitted with the fixing rod 75 and a second plug 112 that is interference-fitted with the fixing rod 75. The diameter of the first plug 111 is smaller than the diameter of the second plug 112, and the diameter of the through hole 12 at the first plug 111 is larger than the diameter of the through hole 12 at the second plug 112. When the fixing rod 75 passes through the rubber plug 11, the outer surface of the second plug 112 is in close contact with the groove wall of the second groove 9.

[0047] When the fixing rod 75 is inserted into the rubber plug 11, in order to increase the contact area between the fixing rod 75 and the inner wall of the rubber plug 11, the inner diameter of the rubber plug 11 gradually decreases from the first plug 111 to the second plug 112. The end of the fixing rod 75 can be better fixed. Furthermore, the diameter of the second plug 112 is larger than the diameter of the first plug 111, so that when the fixing rod 75 is inserted into the second plug 112, it can be guaranteed to make complete contact with the groove wall of the second groove 9, thus completely fixing the relative position between the fixing rod 75 and the rubber plug 11.

[0048] When the fixing rod 75 moves towards the bottom of the second groove 9, it can be inserted into the through hole 12 of the rubber plug 11 along the length of the through hole 12. The first plug 111 and the fixing rod 75 have a clearance fit, resulting in low friction. The first plug 111 pre-fixes the fixing rod 75 and, while fixing the fixing rod 75, increases the insertion speed, thereby improving installation efficiency. The second plug 112 and the fixing rod 75 have an interference fit, increasing friction. When the fixing rod 75 enters the second plug 112, the second plug 112 is lifted, and its outer surface fits tightly against the groove wall of the second groove 9, simultaneously fixing the positions of the fixing rod 75 and the rubber plug 11.

[0049] Reference Figure 4Multiple protrusions 13 are fixed to the upper surface of the rubber stopper 11, and these protrusions 13 are spaced apart along the length of the rubber stopper 11. The rubber stopper 11 completely fixes the position of the fixing rod 75. The multiple protrusions 13 on the surface of the rubber stopper 11 have two advantages. First, the protrusions 13 increase the friction between the rubber stopper 11 and the wall of the second groove 9, ensuring the position of the rubber stopper 11 when the front frame 3 and back plate 4 are not connected to the bottom box 1, minimizing displacement of the rubber stopper 11, and reducing the possibility that the fixing rod 75 cannot be smoothly inserted into the rubber stopper 11. Second, when the fixing rod 75 is inserted into the rubber stopper 11, the outer wall of the second stopper 112 completely abuts against the wall of the second groove 9, and the protrusions 13 also increase friction with the wall of the second groove 9, better fixing the front frame 3 and back plate 4.

[0050] Reference Figure 1 and Figure 4 Each side panel 2, front frame 3, and back panel 4 has a top plate 14 fixedly attached to its upper end. The top plate 14 is a regular quadrilateral, and a quarter circle is cut at each corner that does not contact the side panel 2, front frame 3, or back panel 4. After the side panels 2, front frame 3, and back panel 4 are installed, each top plate 14 is spliced ​​together, and the cut quarter circles are joined to form a complete circle. A connecting component 15 is provided at one corner of each top plate 14 near the central axis of the experimental cabinet, which completes the cut circle.

[0051] Reference Figure 4 and Figure 5 The connecting assembly 15 includes a hollow circular component 151 snapped onto one of the top plates 14, a pull-out component 152 installed inside the hollow circular component 151, and a handle 153 installed on the pull-out component 152. The pull-out component 152 is slidably connected to the hollow circular component 151, and the side of the pull-out component 152 is slidably connected to the side wall of the top plate 14. The two ends of the hollow circular component 151 are the starting end and the ending end of the movement of the pull-out component 152, respectively. The two ends of the hollow circular component 151 are respectively provided with mounting grooves 16 for the handle 153 to be inserted.

[0052] The connecting component 15 increases the connection strength between multiple top panels 14. The top panels 14 are used to protect the top of the laboratory cabinet. Dividing the top panel 14 into several pieces, which are connected to the side panels 2, front frame 3, and back panel 4 respectively, facilitates installation. Once the side panels 2, front frame 3, and back panel 4 are installed together, the top panels 14 can be directly joined without further special installation, further improving the installation efficiency of the laboratory cabinet. The connecting component 15 also increases the connection stability between the multiple top panels 14.

[0053] To facilitate the movement of the pull-out component 152, a handle 153 is provided. Since the handle 153 protrudes 13, a mounting groove 16 is opened at the end of the hollow circular component 151. When it is necessary to connect the top plates 14 more tightly, the handle 153 is pulled to pull out the pull-out component 152. The pull-out component 152 circles around the joint of each top plate 14. At the same time, the pull-out component 152 contacts the inner edge of the top plate 14. Finally, the pull-out component 152 and the hollow circular component 151 form a complete circle, connecting each top plate 14 together. Finally, the handle 153 slides from one end of the hollow circular part 151 around the outer ring to the other end and is re-embedded in the hollow circular part 151. Finally, the handle 153 is re-embedded in the mounting groove 16 at the end. Since the side of the pull-out part 152 is finally embedded in the hollow circular part 151, the mounting groove 16 restricts the position of the handle 153, thereby restricting the position of the pull-out part 152 and fixing the top plate 14 more firmly.

[0054] The implementation principle of the assembled laboratory cabinet according to this application embodiment is as follows: During installation, the base box 1 is first placed on a horizontal surface, and the assembly of the laboratory cabinet begins. First, two side panels 2 are installed. The free end of the steel wire 53 is threaded onto the threading rod 521, with the middle portion of the steel wire 53 resting on the pulley 51. Then, the side panels 2 are aligned with the sides of the base box 1, and the tip 522 of the threading rod 521 is aligned with the side of the base box 1. Simultaneously, both threading rods 521 are screwed on so that the threads on the threading rods 521 pass through the base box 1. This continues until the steel wire 53 is completely taut, with no excess space for tightening, indicating that the side panels 2 and the base box 1 are completely and stably connected.

[0055] Next, the front frame 3 and the two side panels 2 are slidably inserted together. Simultaneously, the connecting rod 6 is inserted into the adjusting assembly 71 and then into the connecting ring 73. As the front frame 3 or back panel 4 gradually moves downwards, the mounting rod 712 slides downwards on the guide rod 711, and the connecting ring 73 also moves downwards. Due to the connection of the mounting rod 712, the movement trajectory of the connecting ring 73 is restricted to a vertical descent. While the connecting ring 73 descends, it pushes the angle rods 74 on both sides, causing the angle rods 74 to rotate around the hinge point with the connecting ring 73. The angle between the angle rod 74 and the bottom of the first groove 8 gradually decreases. The angle rod 74 compresses the compression spring 10, which pushes the fixing rod 75. The fixing rod 75 moves into the second groove 9, thereby fixing the front frame 3 or back panel 4 to the bottom box 1. The back panel 4 is then installed using the same method as the front frame 3. When the fixing rod 75 moves toward the bottom of the second groove 9, the fixing rod 75 can be inserted into the perforation 12 of the rubber plug 11 along the length direction of the perforation 12. The outer surface of the second plug 112 is in close contact with the groove wall of the second groove 9, and the positions of the fixing rod 75 and the rubber plug 11 are fixed at the same time.

[0056] When it is necessary to connect the top plates 14 more tightly, pull the handle 153 to pull out the pull piece 152. The pull piece 152 circles around the joint of each top plate 14. At the same time, the pull piece 152 contacts the inner edge of the top plate 14. Finally, the pull piece 152 and the hollow circular piece 151 form a complete circle and connect each top plate 14 together.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An assembled bench cabinet, characterized by: include: The bottom box (1) and the side panel (2), front frame (3) and back panel (4) disposed on the bottom box (1); A first fixing device (5) is used to connect the side plate (2) and the bottom box (1). The first fixing device (5) includes pulleys (51) installed on the outer wall of the side plate (2) near the top ends, a steel wire (53) passing through the two pulleys (51) at the same time, and a tightening member (52) set on the outer wall of the bottom box (1). The two free ends of the steel wire (53) correspond to one tightening member (52) respectively. The side plate (2) is slidably connected to the front frame (3) and to the back plate (4), and multiple connecting rods (6) are connected to the bottom of the front frame (3) and the back plate (4); The second fixing device (7) is used to connect the front frame (3) and the back plate (4) to the bottom box (1) respectively. The second fixing device (7) includes an adjustment component (71) for the connecting rod (6) to be inserted, an angle rod (74) hinged on both sides of the adjustment component (71), and a fixing rod (75) hinged on the end of the angle rod (74) away from the adjustment component (71). The bottom box (1) has a first groove (8) and a second groove (9) on its side wall for the second fixing device (7) to be inserted. The fixing rod (75) is inserted into the second groove (9). The first groove (8) and the second groove (9) are connected. The adjustment assembly (71) includes a guide rod (711) vertically installed at the bottom of the first groove (8), an installation rod (712) passing through the guide rod (711) and perpendicular to the guide rod (711), and connecting rings (73) provided at both ends of the installation rod (712). The connecting rod (6) can pass through the connecting ring (73) and drive the connecting ring (73) to move. The angle rod (74) is respectively hinged to the two ends of the two connecting rings (73). A compression spring (10) is provided between the angle rod (74) and the fixing rod (75). The second groove (9) is provided with a rubber plug (11) through which the fixing rod (75) passes. The rubber plug (11) has a through hole (12). The through hole (12) on the side of the rubber plug (11) that contacts the bottom of the second groove (9) is open. The rubber plug (11) includes a first plug (111) that is clearance-fitted with the fixing rod (75) and a second plug (112) that is interference-fitted with the fixing rod (75). When the fixing rod (75) passes through the rubber plug (11), the outer surface of the second plug (112) is tightly fitted to the groove wall of the second groove (9).

2. The assembled experimental bench cabinet according to claim 1, characterized in that: The angle between the angle rod (74) and the bottom of the first groove (8) is an acute angle, and the angle between the compression spring (10) and the angle rod (74) is an obtuse angle. The compression spring (10) and the fixing rod (75) are placed on the same straight line. When the connecting ring (73) moves to the bottom of the first groove (8), the fixing rod (75) and the angle rod (74) form a flat angle.

3. The assembled experimental bench cabinet according to claim 1, characterized in that: The upper surface of the rubber stopper (11) is fixed with a plurality of protrusions (13), and the plurality of protrusions (13) are spaced apart along the length direction of the rubber stopper (11).

4. A modular laboratory bench according to any one of claims 1 or 3, characterized in that: The rubber stopper (11) has a trapezoidal cross-section. The diameter of the first stopper (111) is smaller than the diameter of the second stopper (112). The diameter of the perforation (12) opened at the first stopper (111) is larger than the diameter of the perforation (12) opened at the second stopper (112).

5. The assembled experimental bench cabinet according to claim 1, characterized in that: The tightening member (52) includes a through rod (521) that passes through the bottom box (1) and a tip (522) fixed to one end of the through rod (521). The free end of the steel wire (53) passes through the through rod (521), and the through rod (521) is threaded.

6. The assembled experimental bench cabinet according to claim 1, characterized in that: Each of the side panels (2), the front frame (3) and the back panel (4) is connected to a top plate (14). After the side panels (2), the front frame (3) and the back panel (4) are installed, each of the top plates (14) is spliced ​​together. Each of the top plates (14) is provided with a connecting component (15) at one corner near the central axis of the experimental cabinet.

7. The assembled experimental bench cabinet according to claim 6, characterized in that: The connecting assembly (15) includes a hollow circular piece (151) mounted on one of the top plates (14), a pull-out piece (152) mounted inside the hollow circular piece (151), and a handle (153) mounted on the pull-out piece (152), the pull-out piece (152) being slidably connected to the hollow circular piece (151).

8. The assembled experimental bench cabinet according to claim 7, characterized in that: The hollow circular component (151) has two ends, which are the starting end and the ending end of the movement of the pull-out component (152), respectively. The hollow circular component (151) has mounting grooves (16) at both ends for the handle (153) to be inserted.

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