CN110900548A

CN110900548A - Tool box

Info

Publication number: CN110900548A
Application number: CN201911081333.0A
Authority: CN
Inventors: 阿克塞尔法赫
Original assignee: Ftc Europe LLC
Current assignee: Ftc Europe LLC
Priority date: 2018-06-01
Filing date: 2019-11-07
Publication date: 2020-03-24
Anticipated expiration: 2039-11-07
Also published as: CN110900548B; CN211163865U; DE102018008833A1

Abstract

The tool box comprises a box body, wherein an inner cavity and a bottom plate are arranged in the box body, the bottom plate is provided with a bottom plate surface facing the inner cavity, a roller retainer is arranged on the bottom plate surface, and a roller is arranged in the roller retainer. According to the roller retainer, the roller retainer is fixed on the surface of the bottom plate, facing the inner cavity of the tool box, of the bottom plate, the roller is located in the independent roller retainer and is arranged on the surface of the bottom plate from the upper part of the tool box through the roller retainer instead of the lower part of the tool box, so that the problem that holes for the rollers to penetrate through are specially formed in the surface of the bottom plate in the prior art is solved, and the roller retainer is simple in structure, low in production cost and high in practicability.

Description

Tool box

Technical Field

The invention relates to the technical field of boxes, in particular to a tool box with a roller support drawer.

Background

With the continuous development of economy and the change of ideas, the requirements of users on the tool box are higher and higher, so that the tool box is greatly developed and is continuously innovative not only in appearance but also in material use. The tool box is convenient to store, easy to manage and carry and becomes the first choice of tool users.

In the prior art, patent application No. US2007080614 (a 1) discloses a tool box with an upper part, two side parts, a bottom and a drawer, all parts and drawers of which are made of injection-molded parts. The drawer is placed in an inserted state on rollers mounted at the bottom of the tool box from below through holes at the bottom in the tool box.

Patent application No. US5603559 (a) also discloses a tool box with drawers, which can be stacked with supplementary tool boxes. The upper tool box in the stack of tool boxes forms the upper part, which is provided with a handle for the stacked tool boxes and an upwardly open storage compartment for small parts (e.g. screws, etc.).

In summary, the existing tool boxes have the defects that holes are specially designed at the bottom of the tool box for the rollers to pass through, a plurality of tool boxes are not stacked tightly, and only the tool box above the tool boxes is provided with a handle, so that the tool boxes are complex in structure, high in production cost and low in practicability.

Disclosure of Invention

In view of the above-mentioned disadvantages of the prior art, the present invention provides a tool box with simple structure, low production cost and strong practicability.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the tool box comprises a box body, wherein an inner cavity and a bottom plate are arranged in the box body, a bottom plate surface facing the inner cavity is arranged on the bottom plate, a roller retainer is arranged on the bottom plate surface, and a roller is arranged in the roller retainer.

Preferably, in the above toolbox, the inner cavity is formed by surrounding a cover plate, a rear plate, a front plate, a left side plate, a right side plate and a bottom plate.

Preferably, in the above toolbox, the roller is provided with a drawer bottom on which a drawer is placed, and the drawer is slidably inserted into the inner cavity.

Preferably, in the above-mentioned toolbox, the bottom plate has a surrounding bottom plate edge, the bottom plate edge is connected with a side baffle perpendicular to the bottom plate, a reinforcing rib is arranged between two opposite side baffles, and the side baffle and the reinforcing rib are arranged on the bottom plate plane of the bottom plate surface facing the inner cavity.

Preferably, in the above tool box, a guide plate is disposed in the inner cavity near the left side plate and the right side plate, one end of the guide plate is mounted on a reinforcing rib longitudinally extending to the lower leg through the lower leg pointing downward and toward the bottom plate, and the other end of the guide plate is mounted on the same reinforcing rib through the upper leg pointing toward the left side plate and the right side plate.

Preferably, in the tool box, the cross section of the guide plate is L-shaped.

Preferably, in the above-mentioned toolbox, the upper leg has a guide surface thereon, and the drawer is slidably inserted into the inner cavity on the guide surface by its own integrated guide rail.

Preferably, in the above tool box, the rail is provided at a bottom thereof with a roller, and the roller slides on the guide surface when the drawer is inserted into the inner cavity.

Preferably, in the above-described toolbox, the lower leg and the reinforcing rib to which the lower leg is attached have a first visible surface and a second visible surface, respectively, facing the inner cavity, and the first visible surface and the second visible surface are flush-connected with each other in the guide-plate-inserted state.

Preferably, in the above tool box, the bottom plate and the side baffle form a sealed shell shape facing the inner cavity, and the sealed shell shape has an inner volume therein, and the inner volume is divided into a plurality of compartments by the reinforcing ribs.

Preferably, in the above toolbox, the roller cage and rollers are mounted on a floor surface of the floor in the compartment of the interior volume.

Preferably, in the above toolbox, the first upper edge of the side barrier and the second upper edge of the stiffener are located on the same plane, the plane is parallel to the bottom plate surface, and the plane and the bottom plate surface have a set distance therebetween.

Preferably, in the above toolbox, the second upper edge of the reinforcing rib serves as a slide rail for placing the drawer bottom of the drawer in the drawer inserted state.

Preferably, in the above toolbox, the cover plate is connected to the rear plate, the cover plate is provided with a fastener, the front plate, the left side plate and the right side plate are respectively provided with at least one tension pin having a hoop, and the tension pin is engaged with the fastener on the cover plate through the hoop.

Preferably, in the above toolbox, the cover plate is connected to the rear plate by a hinge or a hinge.

Preferably, in the tool box, there are at least two tool boxes, a second bottom plate of a second tool box is placed on the cover plate of the first tool box, a second fastening piece is arranged on the second bottom plate of the second tool box, and the second fastening piece is matched and buckled with the tension pin on the first tool box.

Preferably, in the above-described toolbox, the second bottom plate of the second toolbox provided with the second fastening member is placed above the fastening member of the first toolbox.

Preferably, in the above toolbox, a carrying handle is inserted into an outer surface of the cover plate.

Preferably, in the above toolbox, the web width or thickness of the side baffle is the same as the web width or thickness of the reinforcing rib.

Preferably, in the above tool box, the roller cage is detachably mounted on the surface of the base plate.

Preferably, in the above toolbox, a latch is disposed at the front end of the drawer, and the latch is connected to the clamping strip. .

Preferably, in the above toolbox, the drawer has a partition plate thereon, and an outer surface of the partition plate is flush-connected with an outer surface of the front plate in a state where the drawer is inserted into the inner cavity.

Compared with the prior art, the tool box provided by the embodiment of the invention has the advantages that the inner cavity and the bottom plate are arranged in the box body, the bottom plate surface facing the inner cavity is arranged on the bottom plate, the roller retainer is arranged on the surface of the bottom plate, the roller is arranged in the roller retainer, and the bottom of the drawer is arranged on the roller. According to the roller retainer, the roller retainer is fixed on the surface of the bottom plate, facing the inner cavity of the tool box, of the bottom plate, the roller is located in the independent roller retainer and is arranged on the surface of the bottom plate from the upper part of the tool box through the roller retainer instead of the lower part of the tool box, so that the problem that holes for the rollers to penetrate through are specially formed in the surface of the bottom plate in the prior art is solved, and the roller retainer is simple in structure, low in production cost and high in practicability.

The conception, the specific structure and the technical effects of the embodiments of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the embodiments of the present invention.

Drawings

FIG. 1: the tool box of the embodiment of the invention is structurally schematic;

FIG. 2: the drawer roller of the embodiment of the invention has a schematic structure;

FIG. 3: a schematic plan view of a bottom plate in a toolbox according to an embodiment of the present invention;

FIG. 4: the roller in the tool box of the embodiment of the invention is structurally schematic;

FIG. 5: the roller with the drawer in the tool box of the embodiment of the invention is structurally schematic;

FIG. 6: the structure of the tension pin in the tool box is shown schematically;

FIG. 7: side views of two stacking tool boxes according to embodiments of the present invention;

FIG. 8: front views of two stacking tool boxes according to embodiments of the present invention;

FIG. 9: the structure of the tension pin in two stacking tool boxes of the embodiment of the invention is schematically shown;

1-a box body; 2-inner cavity; 3-cover plate; 4-a rear plate; 5-front plate; 6-left side plate; 7-right side plate; 8-a bottom plate; 9-the surface of the soleplate; 10-drawer bottom; 11-a drawer; 12-a roller; 13-a slide rail; 14-floor edge; 15-side baffle; 16-reinforcing ribs; 17-a roller cage; 18-a guide plate; 19-lower leg; 20-upper support leg; 201-a guide surface; 21-a guide rail; 211-a roller; 22-a first visible surface; 221-a second visible surface; 23-an internal volume; 24-a compartment; 25-a first upper edge; 161-a second upper edge; 27-locking; 271-clamping strip; 28-set distance; 29-a tension pin; 30-hoop; 31-a fastener; 81-a second floor; 311-a second fastener; 32-carrying handle; 33-plane; 34-the plane of the base plate; 35-partition plate.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the embodiments of the present invention more clearly apparent, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the invention and are not limiting of the embodiments of the invention.

As shown in fig. 1, the tool box according to the embodiment of the present invention includes a box body 1, the box body 1 has an inner cavity 2 and a bottom plate 8, the bottom plate 8 has a bottom plate surface 9 facing the inner cavity 2, the bottom plate surface 9 is mounted with a roller cage 17, and the roller cage 17 is mounted with rollers 12 therein.

Preferably, the roller cage 17 of the present embodiment is removably mounted to the floor surface 9. Alternatively, the roller cage 17 is clamped to the base plate surface 9, or the roller cage 17 is screwed (e.g. by screws) to the base plate surface 9.

The roller cage 17 of the embodiment of the invention is a separate structure, and the rollers 12 are in the separate roller cage 17 and are fixed together with the roller cage 17 on the bottom plate surface 9 of the bottom plate 8 facing the cavity 2. In implementation, the rollers 12 are mounted on the bottom plate surface 9 from above the tool box through the roller retainer 17, but not from below the tool box, so that the embodiment of the invention does not need to provide holes for the rollers 12 to pass through on the bottom plate surface 9, and has the advantages of simple structure, low production cost and high practicability.

Preferably, the inner cavity 2 of the present embodiment is formed by enclosing the cover plate 3, the rear plate 4, the front plate 5, the left side plate 6, the right side plate 7 and the bottom plate 8.

According to the embodiment of the invention, the roller 12 is provided with the drawer bottom 10 for placing the drawer 11, and the drawer 11 can be inserted into the inner cavity 2. Alternatively, the roller 12 of the present embodiment may be cushioned relative to the base 8 by a spring, such that the roller 12 may rotate in the direction of the base 8 under the pressure of the drawer bottom 10 under the influence of the increased spring force.

The base plate 8 according to the exemplary embodiment of the invention has a surrounding base plate edge 14, which base plate edge 14 is connected to a side screen 15 perpendicular to the base plate 8, and a reinforcement rib 16 is arranged between two opposite side screens 15, which side screens 15 and reinforcement rib 16 are arranged on a base plate plane 34 of the base plate surface 9 facing the interior 2.

Preferably, the side dams 15, the ribs 16 and the floor surface 9 of the embodiments of the present invention can be produced by simple injection molding, which significantly reduces the production cost compared to the complicated molding of the casting process.

Preferably, in the toolbox according to the embodiment of the present invention, a guide plate 18 is disposed in the inner cavity 2 near the left side plate 6 and the right side plate 7, respectively, and the guide plate 18 is mounted at one end thereof on the reinforcing rib 16 extending longitudinally to the lower leg 19 through the lower leg 19 directed downward and toward the bottom plate 8, and at the other end thereof on the reinforcing rib 16 through the upper leg 20 directed toward the left side plate 6 and the right side plate 7, so as to be inserted into the inner cavity 2. Preferably, the guide plate 18 is L-shaped in cross-section.

In order to provide a guide for the drawer 11, guide plates 18 having an L-shaped cross section are respectively disposed on the left side plate 6 and the right side plate 7 of the toolbox, and specifically, the embodiment of the present invention provides a guide for the drawer 11 by pointing to the upper legs 20 of the left side plate 6 and the right side plate 7.

Preferably, in the above-mentioned toolbox, the upper leg 20 has a guide surface 201 thereon, on which guide surface 201 the drawer 11 is inserted into the inner cavity 2 through its own integrated guide rail 21.

Preferably, as shown in fig. 2, the guide rail 21 according to the embodiment of the present invention is provided with rollers 211 at the bottom thereof, and preferably, the rollers 211 are disposed at both ends of the guide rail 21. In operation, when the drawer 11 is inserted into the cavity 2, the rollers 211 slide on the guide surfaces 201, thereby reducing friction between the drawer 11 and the guide surfaces 201.

Preferably, as shown in fig. 1, the lower leg 19 and the stiffener 16 to which the lower leg 19 is attached according to the embodiment of the present invention have a first visible surface 22 and a second visible surface 221, respectively, facing the inner cavity 2, the inner cavity 2 being visible in the condition of extraction of the drawer 11 and opening of the cover 3. In a specific implementation, the first visible surface 22 and the second visible surface 221 are connected flush with each other in the inserted state of the guiding plate 18.

Preferably, in the tool box of the embodiment of the present invention, the bottom plate 8 is closed outwardly from the bottom plate surface 9 facing the inner cavity 2, and specifically, as shown in fig. 3 and 4, the bottom plate 8 and the side baffle 15 form a sealed shell shape facing the inner cavity 2, and the sealed shell shape has an inner volume 23 therein, and the inner volume 23 is divided into a plurality of compartments 24 by the reinforcing ribs 16. Preferably, in the above described toolbox, the roller cage 17 and rollers 12 are mounted on the floor surface 9 of the floor 8 in the compartments 24 of the interior volume 23.

In practice, the bottom plate 8 of the embodiment of the present invention is formed in a shell shape having a seal facing the cavity 2 by the side barrier 15. Alternatively, the sealed shell may be a liquid-tight shell. For example, when the tool box contains oil, fuel or the like, or, for example, a container with oil, which liquid is inadvertently spilled due to improper handling during storage in the tool box, the liquid may safely accumulate in the liquid-tight shell of the bottom plate 8 without coming into contact with the external environment. Thus, embodiments of the present invention have the advantage of increasing the safety of storage of tools that may pose a potential environmental hazard.

The embodiment of the invention has an internal volume 23 which is divided into compartments 24 by the ribs 16 so that if the floor 8 is contaminated with a liquid overflow, such as described above, the entire visible surface of the floor 8 can be protected from liquid wetting by dividing the internal volume 23 if necessary.

The internal volume 23 of the embodiment of the invention is divided by the ribs 16 so that the roller cage 17 together with the rollers 12 can be mounted in a single allocated compartment 24 of the floor surface 9.

Preferably, in order to reduce the production cost of the toolbox, the web width or thickness of the side baffle 15 of the embodiment of the present invention is the same as the web width or thickness of the plate material region (including the rear plate 4, the front plate 5, the left side plate 6, the right side plate 7 and the bottom plate 8) facing the inner cavity 2 and the web width or thickness of the reinforcing ribs 16.

Preferably, in order to obtain as large an internal volume 23 as possible, the first upper edge 25 of the side barrier 15 and the second upper edge 161 of the stiffener 16 of the embodiment of the present invention are located on the same plane 33. As shown in fig. 1 and 5, the plane 33 is parallel to the bottom plate surface 9, and the plane 33 has a set distance 28 from the bottom plate surface 9.

In practice, the second upper edge 161 of the reinforcing rib 16 of the embodiment of the present invention may be used as a sliding rail 13, and the drawer bottom 10 may be placed on the sliding rail 13 in the inserted state of the drawer 11.

Preferably, in the toolbox according to the embodiment of the present invention, the cover plate 3 is connected to the rear plate 4 by a hinge or other connection means such as a rotating shaft. Further, as shown in fig. 6, in the embodiment of the present invention, the fastening member 31 is provided on the cover plate 3, at least one tension pin 29 having a hoop 30 is provided on each of the front plate 5, the left side plate 6 and the right side plate 7, and the tension pin 29 is engaged with the fastening member 31 provided on the cover plate 3 through the hoop 30, that is, the tension pin 29 can grip the fastening member 31 provided on the cover plate 3 through the hoop 30 and can tighten the front plate 5, the left side plate 6 and the right side plate 7 after using the tension pin 29, thereby improving the practicability of the tool box of the present invention.

Alternatively, the fastening member 31 of the embodiment of the present invention may be a lug or a groove structure. The present invention is not limited to the specific structure of the fastener 31, and all structures that can engage with the tension pin 29 are within the scope of the present invention.

Preferably, as shown in fig. 7 and 8, the tool box provided by the other embodiment of the present invention is at least two, and in the implementation, the second bottom plate 81 of the second tool box is placed on the cover plate 3 of the first tool box. As shown in fig. 9, the second bottom plate 81 of the second toolbox is provided with at least one second fastening member 311, and the second fastening member 311 is matched and buckled with the tension pin 29 on the first toolbox, i.e. the second fastening member 311 can be grasped by the tension pin 29 of the first toolbox to clamp the second toolbox on the cover plate 3 of the first toolbox, so that a plurality of toolboxes can be tightly combined and stacked.

In particular, the embodiment of the present invention provides that by providing at least one tension pin 29 on each side of the first toolbox (e.g., the front panel 5, the left side panel 6, and the right side panel 7) on which the cover 3 is not hinged, all sides of the second toolbox are evenly clamped and abutted against the cover 3 of the first toolbox by the tension pin 29 engaging with the second fastener 311 on the second bottom panel 81 of the second toolbox.

Preferably, in the implementation, as shown in fig. 9, the second bottom plate 81 of the second tool box provided with the second fastening member 311 is placed above the fastening member 31 of the first tool box, so that the corresponding second fastening member 311 can be caught by the corresponding hoop 30 of the first tool box and can be clamped with the second bottom plate 81 of the second tool box and abut against the cover plate 3 of the first tool box after the tension pin 29 is used.

Preferably, in order to be able to individually support the toolbox of the present embodiment by a pull handle and enable it to stack the toolboxes without disturbing factors, as shown in fig. 7 and 8, the present embodiment is inserted with a carrying handle 32 at an outer surface of each toolbox cover plate 3, and particularly, a carrying handle 32 inserted flush at an outer surface of the cover plate 3 for lifting the toolbox upward so that it can be flipped out of the cover plate shutter.

Preferably, as shown in fig. 1, in the toolbox of the present invention, the front end of the drawer 11 is provided with a latch 27, and the latch 27 is connected with a clip strip 271. In a natural state, the clamping strip 271 extends out of the upper plane of the drawer 11, when the drawer 11 needs to be inserted into the inner cavity 2 and fixed in the box body 1, the clamping strip 271 connected with the lock catch 27 moves downwards along with the lock catch 27 by pressing down the lock catch 27, and after the clamping strip 271 is completely retracted to be parallel to the upper plane of the drawer 11 or lower than the upper plane of the drawer 11, the drawer 11 can be smoothly inserted into the inner cavity 2. At this time, the latch 27 is released, the latch 27 can be reset under the action of the spring, the clamping strip 271 connected with the latch 27 is popped out to form a limiting effect with the front plate 5, and therefore the purpose that the drawer 11 is locked with the front plate 5 of the tool box in the inserted state is achieved.

Preferably, as shown in fig. 7 and 8, the drawer 11 of the present invention has a partition 35, and the outer surface of the partition 35 is flush with the outer surface of the front plate 5 in a state where the drawer 11 is inserted into the internal cavity 2.

To sum up, the tool box bottom plate provided by the embodiment of the invention is provided with a bottom plate surface facing the inner cavity, the bottom plate surface is provided with a roller retainer, rollers are arranged in the roller retainer, the bottom of a drawer of the drawer is placed on the rollers, the bottom plate is provided with a surrounding bottom plate edge, the bottom plate edge is connected with a side baffle plate perpendicular to the bottom plate, a reinforcing rib is arranged between two opposite side baffle plates, and the side baffle plate and the reinforcing rib are arranged on the bottom plate plane facing the bottom plate surface of the inner cavity. According to the roller retainer, the roller retainer is fixed on the surface of the bottom plate, facing the inner cavity of the tool box, of the bottom plate, the roller is located in the independent roller retainer and is arranged on the surface of the bottom plate from the upper part of the tool box through the roller retainer instead of the lower part of the tool box, so that the problem that holes for the rollers to penetrate through are specially formed in the surface of the bottom plate in the prior art is solved, and the roller retainer is simple in structure, low in production cost and high in practicability.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. Toolbox, its characterized in that: including box (1), inner chamber (2) and bottom plate (8) have in box (1), bottom plate (8) are gone up and are had one bottom plate surface (9) towards inner chamber (2), install roller holder (17) on bottom plate surface (9), install roller (12) in roller holder (17).

2. A toolbox according to claim 1, wherein the inner cavity (2) is formed by a cover plate (3), a rear plate (4), a front plate (5), a left side plate (6), a right side plate (7) and a bottom plate (8) in an enclosing manner.

3. A kit as claimed in claim 2, characterized in that said rollers (12) have a drawer bottom (10) on which a drawer (11) is placed, said drawer (11) being slidably inserted in the internal cavity (2).

4. A toolbox according to claim 3, wherein the base plate (8) has a surrounding base plate edge (14), the base plate edge (14) being connected with a side barrier (15) perpendicular to the base plate (8), a reinforcement rib (16) being provided between two opposite side barriers (15), the side barriers (15) and the reinforcement rib (16) being provided on a base plate plane (34) facing the base plate surface (9) of the inner cavity (2).

5. A toolbox according to claim 4, wherein a guide plate (18) is disposed in the inner chamber (2) near the left side plate (6) and the right side plate (7), respectively, said guide plate (18) having one end mounted on a stiffener (16) extending longitudinally to the lower leg (19) via a lower leg (19) directed downward and toward the bottom plate (8) and the other end mounted on the stiffener (16) via an upper leg (20) directed toward the left side plate (6) or the right side plate (7).

6. A toolbox according to claim 5, wherein the guide plate (18) has an L-shaped cross-section.

7. A toolbox according to claim 5 or 6, wherein the upper leg (20) has a guide surface (201) thereon, the drawer (11) being slidably inserted into the inner cavity (2) on the guide surface (201) by means of its own integrated guide rail (21).

8. A kit as claimed in claim 7, characterized in that said rail (21) is provided with rollers (211) at the bottom thereof, said rollers (211) sliding on said guide surface (201) when said drawer (11) is inserted in said internal cavity (2).

9. A tool kit according to claim 5, characterized in that the lower leg (19) and the stiffener (16) to which the lower leg (19) is attached have a first visible surface (22) and a second visible surface (221), respectively, facing the inner cavity (2), the first visible surface (22) and the second visible surface (221) being flush connected to each other in the inserted state of the guiding plate (18).

10. A toolbox according to claim 4, wherein the bottom plate (8) and the side barrier (15) constitute a sealed shell shape facing the inner cavity (2), having an inner volume (23) therein, the inner volume (23) being divided into a plurality of compartments (24) by the reinforcing ribs (16).

11. A kit according to claim 10, characterized in that the roller cage (17) and the rollers (12) are mounted on the floor surface (9) of the floor (8) in the compartments (24) of the inner volume (23).

12. A toolbox according to claim 4, wherein the first upper edge (25) of the side barrier (15) and the second upper edge (161) of the stiffener (16) are located on the same plane (33), the plane (33) being parallel to the base plate surface (9), the plane (33) having a set distance (28) to the base plate surface (9).

13. A toolbox according to claim 12, wherein the second upper edge (161) of the reinforcing rib (16) serves as a sliding rail (13) for placing the drawer bottom (10) of the drawer (11) in the drawer (11) inserted state.

14. A toolbox according to claim 2, wherein the cover plate (3) is connected to the rear plate (4), the cover plate is provided with a fastening member (31), the front plate (5), the left side plate (6) and the right side plate (7) are respectively provided with at least one tension pin (29) having a hoop (30), and the tension pin (29) is engaged with the fastening member (31) on the cover plate (3) through the hoop (30).

15. A toolbox according to claim 14, wherein the cover plate (3) is connected to the rear plate (4) by a hinge or a pivot.

16. The tool box according to claim 2, characterized in that the number of the tool box is at least two, a second bottom plate (81) of a second tool box is placed on the cover plate (3) of the first tool box, a second fastening member (311) is arranged on the second bottom plate (81) of the second tool box, and the second fastening member (311) is matched and buckled with the tension pin (29) on the first tool box.

17. A toolbox according to claim 16, wherein the second bottom plate (81) of the second toolbox provided with the second fastening members (311) is placed above the fastening members (31) of the first toolbox.

18. A toolbox according to claim 2, wherein a carrying handle (32) is inserted into an outer surface of the cover plate (3).

19. A toolbox according to claim 4, wherein the web width or thickness of the side barrier (15) is the same as the web width or thickness of the stiffener (16).

20. A toolbox according to claim 1, wherein the roller cage (17) is detachably mounted on the floor surface (9).

21. A tool box according to claim 2, wherein the front end of the drawer (11) is provided with a catch (27), and the catch (27) is connected with a clamping strip (271).

22. A kit according to claim 2, characterized in that the drawer (11) has a partition (35) thereon, the outer surface of the partition (35) being flush-connected with the outer surface of the front plate (5) in the state of the drawer (11) inserted in the cavity (2).