Combined tool box

Abstract

The utility model relates to a combined type tool box which comprises a plurality of box bodies which are stacked up and down, the adjacent box bodies are locked or unlocked through matching of buckling assemblies, and at least one containing cavity for storing tools is formed in each box body. A box cover is further arranged at the top end of the box body located on the uppermost side, and locking or unlocking between the box cover and the box body is achieved through cooperation of a buckling assembly. The box cover comprises a box cover main body and a cover plate which are matched with each other, and the box cover main body is provided with at least one cavity for accommodating tools. According to the tool box, the box body and the box cover which are stacked up and down are adopted to form the whole tool box, fixing is achieved in cooperation with the buckling assembly, an outer frame does not need to be arranged, the structure is more compact, the size is small, and the box bodies of any number can be combined according to needs so that the tool box can be suitable for different working condition requirements.

Description

Technical Field

[0001] This utility model relates to the field of toolboxes, and in particular to a modular toolbox. Background Technology

[0002] A toolbox is a container for storing and organizing tools. Common toolboxes include hand toolboxes, medical toolboxes, and electrical toolboxes. In existing technology, most modular multi-layer toolboxes consist of storage boxes arranged layer by layer inside the toolbox, with the storage boxes being removed only when a tool is needed.

[0003] For example, a modular multi-layer toolbox mentioned in patent CN222177692U includes: a toolbox, with multiple sets of sliding grooves on both sides inside the toolbox, multiple sets of rollers at the upper and lower ends of the sliding grooves, telescopic grooves at the upper and lower ends of the front end of the sliding grooves, and springs in the telescopic grooves, with a limiting block connected to the top of the springs; and a storage box, with a base plate on the top of the storage box, and a limiting hole at the bottom rear end of the base plate.

[0004] The toolbox in the aforementioned patent uses a horizontal insertion method to install individual storage boxes inside the toolbox. To ensure smooth horizontal sliding of the storage boxes, several rollers are added inside the toolbox. Furthermore, to prevent the storage boxes from sliding out of the toolbox after insertion, springs and limiting blocks are added, resulting in a large number of components and a complex structure. Although the limiting blocks and springs are used to control the position of the storage boxes, the weight of the storage boxes containing tools is relatively heavy. To facilitate easy removal of the storage boxes, additional... The storage box has a limiting hole on its bottom plate. Therefore, in actual use, this mating structure cannot effectively limit the storage box, meaning there is still a risk of the storage box sliding out. In addition, to achieve the horizontal sliding movement of the storage box, a large outer frame needs to be added to the outside of each storage box, i.e., the toolbox described in the patent. This results in a relatively large size of the final toolbox. Finally, this horizontal sliding method requires an outer frame, making the overall toolbox relatively large, and the number of storage boxes is limited by the size of the outer frame, preventing free combination and arrangement as needed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a modular toolbox with a compact structure and the ability to combine any number of tools.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a modular toolbox, the innovation of which is: it includes several stacked boxes, adjacent boxes are locked or unlocked by the cooperation of fastening components, and the box has at least one storage cavity for storing tools.

[0007] A lid is also provided at the top of the box body located on the uppermost side. The lid can be locked or unlocked with the box body through the cooperation of the fastening components.

[0008] The box cover includes a box cover body and a cover plate that cooperate with each other, and the box cover body has at least one cavity for placing tools.

[0009] Furthermore, the fastening assembly includes a fastening member disposed on the upper side of the housing or the lid, and a locking member disposed on the lower side of the housing.

[0010] The fastening component includes a fastening housing mounted on the box or box cover. A fastening button and a fastening seat are provided inside the fastening housing. A groove is opened on the fastening housing to accommodate the fastening button and allow it to move up and down. A first return spring is also provided inside the fastening button. The top end of the first return spring abuts against the inner wall of the fastening button, and the bottom end of the first return spring extends from the top end of the fastening button and abuts against the fastening housing.

[0011] There are two fastening seats, which are respectively disposed on both sides of the fastening housing, and the two fastening seats are located on both sides of the fastening button. The upper and lower sides of the fastening seats are in contact with the inner wall of the fastening housing.

[0012] On the side of the locking seat near the locking button, there is a drive rod extending towards the locking button. The locking button also has a guide groove for the drive rod to extend into and move horizontally. The outer wall of the drive rod near the locking button also has a groove, thus forming a stepped structure with sequentially distributed first, second, and third stepped segments. The first and third stepped segments have the same size, while the second stepped segment is smaller than the first. The locking button also has an opening for the drive rod to extend into, which communicates with the guide groove. The opening is larger than the second step and smaller than the first step. The end face of the first step near the second step is an inclined first wedge-shaped surface. The inner wall of the button at the opening is a second wedge-shaped surface that fits with the first wedge-shaped surface. A second return spring is also fitted on the outer wall of the drive rod. One side of the second return spring abuts against the fastening seat and the other side abuts against the fastening button. When the fastening button moves up and down, the horizontal movement of the drive rod is achieved by the wedge-shaped fit between the first and second wedge-shaped surfaces and the extension and retraction of the second return spring.

[0013] On the side of the fastening seat away from the fastening button, there is also a fastening block extending in a direction away from the fastening button;

[0014] The locking component includes a pair of locking blocks arranged side by side on both sides of the housing, and the two locking blocks respectively correspond to the locking blocks on the two locking seats. The locking block is an inverted L-shaped structure formed by a horizontal section and a vertical section, and the two locking blocks are distributed opposite to each other. The top surface of the locking block is in contact with the bottom surface of the horizontal section of the locking block, and a clearance groove is provided on the side end of the locking seat to avoid the horizontal section of the locking block.

[0015] Furthermore, a first limiting protrusion extending outward is provided on both sides of the fastening button, and a second limiting protrusion that cooperates with the first limiting protrusion is also provided on the fastening seat, and the first limiting protrusion and the second limiting protrusion have overlapping areas in the vertical direction.

[0016] Furthermore, the box body is composed of an inner liner and an outer shell, with an inner liner embedded in the outer shell. The inner liner and the outer shell are fixed together by a fitting component. The inner liner has at least one placement cavity for placing tools.

[0017] Furthermore, the fitting assembly comprises: several fitting blocks are provided on the inner wall of the outer shell, and the upper end face of the fitting block is an inclined slope, the inclined direction of which gradually slopes downward from the edge of the outer shell to the center of the outer shell; a fitting seat is provided on the outer wall of the inner liner to cooperate with each fitting block; the fitting seat has a fitting groove for the fitting block to be embedded and fixed; the fitting seat includes a U-shaped seat body and a block placed in the seat body; the opening direction of the seat body is downward; the upper end of the block and the seat body together form a fitting groove; and the lower end of the block has a guide slope that cooperates with the upper end face of the fitting block.

[0018] Furthermore, the bottom of the inner liner is provided with several support columns, and the bottom of the support columns is supported on the inner wall of the outer shell.

[0019] Furthermore, the fit between the box cover body and the cover plate is as follows: one side of the cover plate is hinged to the box cover body, and the other side of the cover plate is provided with a locking protrusion extending out of the cover plate. At the same time, a locking groove that cooperates with the locking protrusion is opened on the box cover body. The upper and lower sides of the locking protrusion have a guide slope, and the upper and lower sides of the locking groove are also slopes that cooperate with the locking protrusion.

[0020] Furthermore, the main body of the box cover also has a flip-top groove that allows a person's hand to reach in, and at the same time, an opening that matches the flip-top groove is also opened at the corresponding position of the cover plate, and a flip-top section extending above the flip-top groove is also provided at the opening of the cover plate.

[0021] Furthermore, the lid is also provided with a handle, which is hinged to the lid. The upper surface of the lid body has a groove for the handle to lie flat. A positioning protrusion is also provided on the lid body at the groove. The upper and lower sides of the positioning protrusion have a guide slope. At the same time, a positioning groove is provided on the handle to cooperate with the positioning protrusion. The upper and lower sides of the positioning groove are slopes that cooperate with the positioning protrusion.

[0022] The advantages of this utility model are as follows: The toolbox in this utility model adopts stacked box bodies and box lids to form the entire toolbox, and is fixed with fastening components. There is no need to provide an outer frame, the structure is more compact, the size is small, and any number of box bodies can be combined as needed to suit different working conditions.

[0023] In addition, the lid adopts a combined structure of the lid body and the cover plate, so that the lid itself can also be used to store some tools, increasing the tool storage capacity of the entire toolbox and improving its utilization rate.

[0024] The combination of the flip-top groove on the main body of the toolbox and the flip-top section at the cover plate makes it easy for people to open the cover plate to retrieve tools from the toolbox. The handle is designed to make it easy for people to lift and move the entire toolbox. In addition, the mounting groove on the main body of the toolbox allows the handle to be placed horizontally when not in use, so that the handle does not protrude out of the toolbox and prevent people from accidentally bumping into it.

[0025] The fastener assembly is designed to use the cooperation of fasteners and locking components to fix the boxes together or the boxes and lids together. The horizontal movement of two fastening seats cooperates with the locking block to unlock and lock. The action is simple, requires few parts, and has a simpler structure.

[0026] The first and second limiting protrusions limit the upper travel of the button when it is pressed up or down, preventing the button from popping out of the locking housing directly when it is reset by the first return spring, thus affecting the smooth use of the locking assembly.

[0027] The cabinet uses a separate inner liner and outer shell design, which allows for the replacement of different inner liners according to different needs. Also, if the inner liner is damaged in the future, only the inner liner needs to be replaced, without replacing the entire cabinet.

[0028] The design of the interlocking components uses the cooperation of interlocking blocks and interlocking grooves to achieve relative fixation between the outer shell and the inner liner. This interlocking method makes it easier to fix the outer shell and the inner liner. In addition, the cooperation of the support columns allows the inner liner to be more stably supported inside the outer shell. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the combined toolbox of this utility model.

[0030] Figure 2 This is a schematic diagram of the main body of the box cover in this utility model.

[0031] Figure 3 This is a schematic diagram of the main body of the box cover in this utility model from another angle.

[0032] Figure 4 This is a schematic diagram of the handle in this utility model.

[0033] Figure 5 This is a schematic diagram of the handle from another angle in this utility model.

[0034] Figure 6 This is a schematic diagram of the cover plate in this utility model.

[0035] Figure 7 This is a schematic diagram of the cover plate from another angle in this utility model.

[0036] Figure 8 This is a schematic diagram of the fastening component in this utility model.

[0037] Figure 9 This is a rear view of the fastening component in this utility model.

[0038] Figure 10 This is a top view of the fastening component in this utility model.

[0039] Figure 11 for Figure 10 AA sectional view.

[0040] Figure 12 This is a schematic diagram of the fastening seat in this utility model.

[0041] Figure 13 This is a schematic diagram of the housing in this utility model.

[0042] Figure 14 This is a schematic diagram of the outer shell of this utility model.

[0043] Figure 15 This is a schematic diagram of the inner liner in this utility model.

[0044] Figure 16 Figure 15 Enlarged schematic diagram of part B.

[0045] Figure 17 This is a schematic diagram of the inner liner of this utility model from another angle. Detailed Implementation

[0046] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0047] like Figures 1-17 The illustrated modular toolbox includes several stacked boxes 1, with adjacent boxes 1 locked or unlocked by a pair of fastening components 3. The two fastening components 3 are located on opposite sides of the box 1, and each box 1 has at least one storage cavity 121 for storing tools.

[0048] At the top of the uppermost box 1, there is also a box cover 2, which is locked or unlocked with the box 1 by a pair of fastening components 3.

[0049] like Figures 2-6 As shown in the schematic diagram, the lid 2 includes a lid body 21 and a cover plate 22 that cooperate with each other. The lid body 21 has at least one cavity 211 for placing tools. The lid 2 adopts a combined structure of lid body 21 and cover plate 22, so that the lid 2 itself can also be used to store some tools, increasing the tool storage capacity of the entire toolbox and improving utilization.

[0050] Specifically, the fit between the lid body 21 and the lid plate 22 is as follows: one side of the lid plate 22 is hinged to the lid body 21, and a locking protrusion 223 extending out of the lid plate 21 is provided on the other side of the lid plate 22. Simultaneously, a locking groove 212 is formed on the lid body 21 to mate with the locking protrusion 223. Both the upper and lower sides of the locking protrusion 223 have a guide slope, and the upper and lower sides of the locking groove 212 are also slopes that mate with the locking protrusion 223. The design of the locking protrusion 223 and the locking groove 212 is to ensure that the lid plate 22 is relatively fixed to the lid body 21 when the lid is closed, preventing the lid plate 22 from swinging freely and causing tools placed inside the lid body 21 to fall out.

[0051] The main body 21 of the lid has a flap groove 213 for a person to insert their hand. Correspondingly, the cover plate 22 has an opening 221 that mates with the flap groove 213. A flap section 222 extending above the flap groove 213 is also provided at the opening 221 of the cover plate 22. The flap groove 213 on the main body 21 and the flap section 222 on the cover plate 22 facilitate opening the cover plate 22 for easy access to tools within the main body 21.

[0052] A handle 23 is also provided on the box cover 2, and the handle 23 is hinged to the box cover 2. There is a placement groove 214 on the upper end surface of the box cover main body 21 for the handle 23 to lie flat. The handle 23 is in a U shape, and at the same time, the installation groove 214 is also in a corresponding U shape. A positioning protrusion 215 is also provided on the box cover main body 21 at the placement groove 214. Both the upper and lower sides of the positioning protrusion 215 have a guiding inclined surface. At the same time, a positioning groove 231 matching the positioning protrusion 215 is also opened on the handle 23, and both the upper and lower sides of the positioning groove 231 are inclined surfaces matching the positioning protrusion 215. Through the cooperation of the positioning protrusion 215 and the positioning groove 231, when the handle 23 is horizontally placed, it can play a role in relatively fixing the handle 23 and the box cover main body 21, avoiding the handle 23 from rotating randomly. The design of the handle 23 is to facilitate personnel to lift the entire toolbox through the handle 23 for movement. In addition, by opening the installation groove 214 on the box cover main body 21, when the handle 23 is not needed, it is convenient for the handle 23 to be horizontally placed, and the handle 23 will not protrude outside the toolbox to avoid personnel accidentally touching it.

[0053] The fastening component 3 includes a fastening member provided on the upper box body 1 or the box cover 2 and a locking member provided on the lower box body 1.

[0054] As Figures 8-12 As can be seen from the schematic diagram shown, the fastening member includes a fastening housing 31 installed on the box body 1 or the box cover 2. A fastening button 32 and a fastening seat 33 are provided in the fastening housing 31. A groove for installing and moving the fastening button 32 up and down is opened on the fastening housing 31. A first return spring 34 is also provided in the fastening button 32, and the top end of the first return spring 34 abuts against the inner wall of the fastening button 32. The bottom end of the first return spring 34 extends out from the top end of the fastening button 32 and abuts against the fastening housing 31.

[0055] On both sides of the fastening button 32, first limiting protrusions 322 extending outwards are respectively provided. At the same time, second limiting protrusions 311 matching the first limiting protrusions 322 are also provided on the fastening seat 31, and the first limiting protrusions 322 and the second limiting protrusions 311 have an overlapping area in the vertical direction. Through the first limiting protrusions 322 and the second limiting protrusions 311, when the fastening button 32 is pressed up and down, it can play a role in limiting the upward stroke of the fastening button 32, avoiding the fastening button 32 from directly popping out of the fastening housing 31 under the action of the first return spring 34 and affecting the smooth use of the fastening component.

[0056] There are two fastening seats 33, which are respectively provided on both sides of the fastening housing 31, and the two fastening seats 33 are located on both sides of the fastening button 32. Both the upper and lower sides of the fastening seat 33 are in contact with the inner wall of the fastening housing 31.

[0057] The latching seat 33 has a drive rod 35 extending towards the latching button 32 on the side near the latching button 32. The latching button 32 also has a guide groove for the drive rod 35 to extend into and move horizontally. A groove 354 is also formed on the outer wall of the drive rod 35 near the latching button 32, thus creating a stepped structure for the drive rod 35, consisting of a first stepped segment 351, a second stepped segment 352, and a third stepped segment 353 arranged sequentially. The dimensions of the first stepped segment 351 and the third stepped segment 353 are the same, while the dimension of the second stepped segment 352 is smaller than that of the first stepped segment 351. The latching button 32 also has an opening for the drive rod 35 to extend into, which communicates with the guide groove. The size of the opening is larger than that of the second stepped segment 352 but smaller than that of the first stepped segment 351. The first step 351 has an end face near the second step 352 that is an inclined first wedge-shaped surface 355. The inclination direction of the first wedge-shaped surface 355 gradually moves away from the first step 351 to the second step 352. At the same time, the inner wall of the snap button 32 at the opening is a second wedge-shaped surface 321 that fits against the first wedge-shaped surface 355. A second return spring 36 is also fitted on the outer wall of the drive rod 35. One side of the second return spring 36 abuts against the snap seat 33, and the other side of the second return spring 36 abuts against the snap button 32. When the snap button 32 moves up and down, the horizontal movement of the drive rod is achieved by the wedge-shaped fit between the first wedge-shaped surface 355 and the second wedge-shaped surface 321 and the extension and retraction of the second return spring 36.

[0058] On the side of the fastening seat 33 away from the fastening button 32, there is also a fastening block 331 extending in a direction away from the fastening button 32.

[0059] The locking component includes a pair of locking blocks 13 arranged side by side on both sides of the housing 1. The two locking blocks 13 are respectively matched with the fastening blocks 331 on the two fastening seats 33. The locking block 13 is an inverted L-shaped structure formed by a horizontal section and a vertical section. The two locking blocks 13 are distributed opposite to each other. In the fastening state, the fastening block 331 and the locking block 13 overlap in the vertical direction. The top surface of the fastening block 331 is in contact with the bottom surface of the horizontal section of the locking block 13. At the same time, a clearance groove 332 is opened on the side end of the fastening seat 33 to avoid the horizontal section of the locking block 13. The bottom surface of the fastening block 331 and the top surface of the horizontal section of the locking block 13 are respectively equipped with mutually cooperating guide slopes.

[0060] The fastener assembly is designed to use the cooperation of fasteners and locking parts to fix the box 1 or the box 1 and the lid 2. The horizontal movement of the two fastening seats 33 is used to cooperate with the locking block 13 to achieve unlocking and locking. The action is simple, requires fewer parts, and has a simpler structure.

[0061] The housing 1 is composed of an inner liner 12 and an outer shell 11, as shown below. Figures 13-16 As shown, the outer shell 11 has a groove 111 for the inner liner 12 to be inserted and placed inside it, and the inner liner 12 is fixed to the outer shell 11 by the cooperation of the fitting components. The inner liner 12 has at least one placement cavity 121 for placing tools. The box 1 adopts a separate fitting method for the inner liner 12 and the outer shell 11, so that different inner liners 12 can be replaced according to different needs, and if the inner liner 12 is damaged in the future, only the inner liner 12 needs to be replaced, without replacing the entire box 1.

[0062] The fitting assembly comprises: several fitting blocks 112 disposed on the inner wall of the outer shell 11, wherein the upper end face of the fitting block 112 is an inclined surface, the inclined direction of which gradually slopes downward from the edge of the outer shell 11 to the center of the outer shell 11; the lower end face of the fitting block 112 is a horizontal surface; and fitting seats that mate with each fitting block 112 are disposed on the outer wall of the inner liner 12, such as... Figure 16 As shown, the fitting base has a fitting groove for the fitting block 112 to be embedded and fixed. The fitting base includes a U-shaped base body 123 and a block 124 placed inside the base body 123. The opening of the base body 123 faces downward. The upper end of the block 124 and the base body 123 together form a fitting groove. The lower end of the block 124 has a guide slope that matches the upper end face of the fitting block 112. The upper end face of the block 124 is a horizontal plane. The fitting block 112 and the upper and lower end faces of the block 124 are designed with different slopes and horizontal planes, respectively. One is to facilitate the fitting process by using the cooperation of the two slopes to make the inner liner 12 fall into the outer shell 11 more smoothly. The other is to use the cooperation of the two horizontal planes to strengthen the fixation between the inner liner 12 and the outer shell 11, and to prevent the inner liner 12 from being easily removed from the outer shell 11. The design of the fitting assembly uses the cooperation of the fitting block 112 and the fitting groove to achieve relative fixation between the outer shell 11 and the inner liner 12. This fitting method makes it more convenient to fix the outer shell 11 and the inner liner 12.

[0063] Several support columns 125 are also provided at the bottom of the inner liner 12, and the bottom ends of the support columns 125 are supported on the inner wall of the outer shell 11. The support columns 125 are cylindrical, and reinforcing ribs are provided between adjacent support columns 125. Through the design of the reinforcing ribs, the structural strength of the support columns 125 is enhanced, so that the support columns 125 can better support the inner liner 12. With the cooperation of the support columns 125, the inner liner 12 can be more stably supported inside the outer shell 11.

[0064] Working principle: During use, the upper box 1 or box cover 2 is placed on the lower box 1. At this time, the fastening block 331 and the locking block 13 overlap in the vertical direction, that is, the fastening block 331 is directly supported on the upper surface of the locking block 13. As the upper box 1 or box cover 2 continues to be pressed down, the wedge-shaped engagement of the two guide slopes of the horizontal section of the fastening block 331 and the locking block 13 causes the fastening block 331 to move towards the fastening button 32. The second return spring 36... Under compression, until the fastening block 331 and the locking block 13 no longer overlap in the vertical direction, the upper box 1 or the lid 2 is pressed down, causing the fastening block 331 to descend to below the locking block 13. At this time, the second return spring 36 is released, pushing the fastening block 331 to move away from the fastening button 32, thereby driving the fastening seat 33 to move. The fastening block 331 will move to below the horizontal section of the locking block 13, realizing the locking between adjacent boxes 1 or between box 1 and lid 2, completing the stacking.

[0065] Of course, when stacking, in addition to directly pressing the upper box 1 or box cover 2, stacking can also be achieved by pressing the fastening button 32. Specifically, after placing the upper box 1 or box cover 2 on the lower box 1, press down the fastening button 32. The first wedge surface 355 and the second wedge surface 321 work together to drive the two drive rods 35 to move in the direction of the fastening button 32. The two drive rods 35 will then simultaneously drive the two fastening seats 33 to move in the direction of the fastening button 32. At this time, the fastening block 3... Since the locking block 31 and the locking block 13 do not overlap in the vertical direction, the locking block 331 will move directly down to below the locking block 13. Then, the locking button 32 will be released, and the locking button 32 will move upward under the action of the first return spring 34. At this time, the drive rod 35 will move in the opposite direction under the action of the second return spring 36, that is, it will drive the locking seat 33 to move away from the locking button 32. The locking block 331 will move to below the horizontal section of the locking block 13, thus realizing the locking between adjacent boxes 1 or between box 1 and box cover 2, and completing the stacking.

[0066] If you need to remove the box body 1 or the box cover 2, press the latching button 32 to unlock the latching block 331 from the locking block 13.

[0067] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A modular toolbox, characterized in that: It includes several stacked boxes, which are locked or unlocked by fastening components. Each box has at least one storage cavity for storing tools. A lid is also provided at the top of the box body located on the uppermost side. The lid can be locked or unlocked with the box body through the cooperation of the fastening components. The box cover includes a box cover body and a cover plate that cooperate with each other, and the box cover body has at least one cavity for placing tools.

2. The modular toolbox according to claim 1, characterized in that: The fastening assembly includes a fastening element disposed on the upper side of the housing or the lid, and a locking element disposed on the lower side of the housing. The fastening component includes a fastening housing mounted on the box or box cover. A fastening button and a fastening seat are provided inside the fastening housing. A groove is opened on the fastening housing to accommodate the fastening button and allow it to move up and down. A first return spring is also provided inside the fastening button. The top end of the first return spring abuts against the inner wall of the fastening button, and the bottom end of the first return spring extends from the top end of the fastening button and abuts against the fastening housing. There are two fastening seats, which are respectively disposed on both sides of the fastening housing, and the two fastening seats are located on both sides of the fastening button. The upper and lower sides of the fastening seats are in contact with the inner wall of the fastening housing. On the side of the locking seat near the locking button, there is a drive rod extending towards the locking button. The locking button also has a guide groove for the drive rod to extend into and move horizontally. The outer wall of the drive rod near the locking button also has a groove, thus forming a stepped structure with sequentially distributed first, second, and third stepped segments. The first and third stepped segments have the same size, while the second stepped segment is smaller than the first. The locking button also has an opening for the drive rod to extend into, which communicates with the guide groove. The opening is larger than the second step and smaller than the first step. The end face of the first step near the second step is an inclined first wedge-shaped surface. The inner wall of the button at the opening is a second wedge-shaped surface that fits with the first wedge-shaped surface. A second return spring is also fitted on the outer wall of the drive rod. One side of the second return spring abuts against the fastening seat and the other side abuts against the fastening button. When the fastening button moves up and down, the horizontal movement of the drive rod is achieved by the wedge-shaped fit between the first and second wedge-shaped surfaces and the extension and retraction of the second return spring. On the side of the fastening seat away from the fastening button, there is also a fastening block extending in a direction away from the fastening button; The locking component includes a pair of locking blocks arranged side by side on both sides of the housing, and the two locking blocks respectively correspond to the locking blocks on the two locking seats. The locking block is an inverted L-shaped structure formed by a horizontal section and a vertical section, and the two locking blocks are distributed opposite to each other. The top surface of the locking block is in contact with the bottom surface of the horizontal section of the locking block, and a clearance groove is provided on the side end of the locking seat to avoid the horizontal section of the locking block.

3. The modular toolbox according to claim 2, characterized in that: The fastening button is provided with a first limiting protrusion extending outward on both sides, and a second limiting protrusion that cooperates with the first limiting protrusion is provided on the fastening seat. The first limiting protrusion and the second limiting protrusion have overlapping areas in the vertical direction.

4. The modular toolbox according to claim 1, characterized in that: The box is composed of an inner liner and an outer shell. The outer shell has a groove for inserting the inner liner, and the inner liner and the outer shell are fixed together by a fitting component. The inner liner has at least one placement cavity for placing tools.

5. The modular toolbox according to claim 4, characterized in that: The fitting assembly comprises: several fitting blocks are provided on the inner wall of the outer shell, and the upper end face of the fitting block is an inclined slope, the inclined direction of which gradually slopes downward from the edge of the outer shell to the center of the outer shell; a fitting seat is provided on the outer wall of the inner liner to cooperate with each fitting block; the fitting seat has a fitting groove for the fitting block to be embedded and fixed; the fitting seat includes a U-shaped seat body and a block placed in the seat body; the opening of the seat body faces downward; the upper end of the block and the seat body together form a fitting groove; and the lower end of the block has a guide slope that cooperates with the upper end face of the fitting block.

6. The modular toolbox according to claim 4, characterized in that: The bottom of the inner liner is also provided with several support columns, and the bottom of the support columns is supported on the inner wall of the outer shell.

7. The modular toolbox according to claim 1, characterized in that: The fit between the main body of the box lid and the cover plate is as follows: one side of the cover plate is hinged to the main body of the box lid, and the other side of the cover plate is provided with a locking protrusion extending out of the cover plate. At the same time, a locking groove that cooperates with the locking protrusion is opened on the main body of the box lid. The upper and lower sides of the locking protrusion have a guide slope, and the upper and lower sides of the locking groove are also slopes that cooperate with the locking protrusion.

8. The modular toolbox according to claim 7, characterized in that: The main body of the box cover also has a flip-top groove that allows a person's hand to reach in. At the same time, there is an opening at the corresponding position of the cover plate that matches the flip-top groove, and a flip-top section extending above the flip-top groove is also provided at the opening of the cover plate.

9. The modular toolbox according to claim 1, characterized in that: The lid is also provided with a handle, which is hinged to the lid. There is a groove on the upper surface of the lid body for the handle to lie flat. There is also a positioning protrusion on the lid body located at the groove. The positioning protrusion has a guide slope on both the upper and lower sides. At the same time, there is a positioning groove on the handle that matches the positioning protrusion. The upper and lower sides of the positioning groove are slopes that match the positioning protrusion.

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