Locking assembly, box cover and adapter plate

Abstract

The invention provides a locking assembly, a box cover and an adapter plate, the locking assembly comprises a first sliding piece and a second sliding piece which are symmetrically arranged left and right, and the separated side walls of the first sliding piece and the second sliding piece are respectively provided with a spring bolt extending outwards; the push-pull piece is connected with the first sliding piece and the second sliding piece in a sliding mode and used for driving the first sliding piece and the second sliding piece to move oppositely or oppositely; the two ends of the elastic piece are fixed to the first sliding piece and the second sliding piece respectively, and the elastic piece is used for providing force enabling the first sliding piece and the second sliding piece to move oppositely. The locking assembly is arranged in the adapter plate or the box cover in a hidden mode. The locking assembly is few in parts, simple in structure and easy to operate and is used for the adapter plate or the box cover, and the storage boxes of different sizes and shapes can be rapidly locked and unlocked by directly lowering the upper storage box and then moving the push-pull piece.

Description

Technical Field

[0001] The invention relates to the technical field of storage boxes, and in particular to a locking assembly, a box cover and an adapter plate. Background Art

[0002] When a user needs to carry multiple storage boxes (such as tool boxes), the storage boxes are usually designed to be stacked together and fixed by interlocking structures on the upper and lower storage boxes to prevent sliding or separation during transportation, ensuring that the storage boxes can be easily moved and used as a whole.

[0003] At present, the common rotating locks (the lock fastens the protruding part of the bottom of the upper storage box by rotating, thereby connecting the two boxes together) and side-shifting locks (the lock fastens the protruding part of the bottom of the upper storage box by side-shifting) on ​​the market have complex structures and many parts, and can often only interlock storage boxes of the same length and width. They are not applicable to the interlocking between storage boxes of different sizes and shapes.

[0004] In order to meet the interlocking stacking requirements of storage boxes of different sizes and shapes, those skilled in the art have made some designs. For example, a Chinese patent with publication number CN221189583U discloses a stackable storage box combination, including at least two boxes stacked up and down, the box located at the bottom of the two adjacent boxes is recorded as the first box, and the box located at the top is recorded as the second box, one side wall of the first box is opposite to one side wall of the second box in the up and down direction, and the two are locked in the up and down direction by a first locking assembly, the top wall of the first box has a concave storage recessed area, the side wall of the storage recessed area is provided with a slot opening toward the storage recessed area, the bottom wall of the second box has at least one support column extending downward and supported on the bottom wall of the storage recessed area, the lower part of the support column adjacent to the slot has a protrusion extending toward the side and capable of being limited in the slot. However, when stacking a small storage box on a large storage box, this solution requires first tilting the small storage box to achieve the interlocking of the protrusion and the slot, and then the lock on the other side requires manual rotation of the lock buckle to achieve the interlocking of the upper and lower storage boxes. The overall stacking operation is cumbersome and inconvenient, which affects the user experience. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a locking assembly, a box cover and an adapter plate, which can solve the problems in the prior art of complex lock structure and numerous parts; cumbersome operation and poor convenience in the interlocking structure design between storage boxes of different sizes and shapes.

[0006] In order to achieve the above purpose and other purposes, the present invention is implemented by including the following technical solutions: as a first aspect, the present invention proposes a locking assembly, including a first sliding member and a second sliding member that are symmetrically arranged on the left and right, and the first sliding member and the second sliding member have outwardly extending locking tongues on their separated side walls; a push-pull member, which is slidably connected to the first sliding member and the second sliding member, and is used to drive the first sliding member and the second sliding member to move away from each other or towards each other; an elastic member, whose two ends are respectively fixed on the first sliding member and the second sliding member, and is used to provide a force to make the first sliding member and the second sliding member move away from each other.

[0007] In one embodiment, protrusions are respectively provided on the upper end surfaces of the first sliding member and the second sliding member; the side of the protrusion facing the locking tongue is an inclined surface; the bottom surface of the push-pull member is provided with a connected trapezoidal groove and a square groove, and the spacing between the two side walls of the square groove is equal to the minimum spacing between the two side walls of the trapezoidal groove; the trapezoidal groove and the square groove are slidably connected to the protrusion.

[0008] In one embodiment, the slope of the sidewall of the trapezoidal groove is equal to the slope of the inclined surface.

[0009] In one embodiment, an operating portion is provided on the upper end surface of the push-pull member for conveniently operating the push-pull member to move.

[0010] In one embodiment, an operation mark is provided on the upper end surface of the push-pull member to indicate the operation direction of the push-pull member.

[0011] As a second aspect, the present invention provides an adapter plate, comprising the locking assembly as described in the first aspect.

[0012] In one embodiment, the two locking components are respectively hidden and arranged on the front and rear sides of the upper end surface of the adapter plate, and the operating part and the operating mark of the push-pull member are exposed on the upper end surface of the adapter plate; when the protrusions of the first sliding member and the second sliding member slide into the trapezoidal groove of the push-pull member, under the elastic force of the elastic member, the locking tongues of the first sliding member and the second sliding member move backward and finally expose the first groove of the adapter plate, so that the first hook at the bottom of the upper storage box is interlocked with the locking tongue in the first groove; when the protrusion slides into the square groove of the push-pull member, the locking tongue retracts, unlocks the first hook, and causes the elastic member to be compressed to obtain elastic force.

[0013] In one embodiment, a latch and an automatic locking mechanism are provided on both the front and rear sides of the upper end face of the adapter plate; the latch is movably mounted on the adapter plate, and a latching portion is provided on its upper end face; the automatic locking mechanism is arranged inside the adapter plate, and its upper end is exposed on the upper end face of the latch.

[0014] In one embodiment, the upper end surface of the latch is also provided with a mounting through hole connected to the upper end surface of the adapter plate; a connecting portion is provided on the lower end surface of the latch; the automatic locking mechanism includes a positioning pin assembly, the upper end of which is exposed to the upper end surface of the latch through the mounting through hole; a fixed seat is T-shaped, the first end is fixedly arranged on the connecting portion, the second end is fixedly connected to the left / right end of the first elastic member, and the third end is used to abut the positioning pin assembly; the right / left end of the first elastic member is fixedly arranged on the adapter plate.

[0015] As a third aspect, the present invention provides a box cover, comprising the locking assembly as described in the first aspect.

[0016] In one embodiment, the two locking components are respectively hidden and arranged on the front and rear sides of the upper end surface of the adapter plate, and the operating part and the operating mark of the push-pull member are exposed on the upper end surface of the adapter plate; when the protrusions of the first sliding member and the second sliding member slide into the trapezoidal groove of the push-pull member, under the elastic force of the elastic member, the locking tongues of the first sliding member and the second sliding member move backward and finally expose the first groove of the adapter plate, so that the first hook at the bottom of the upper storage box is interlocked with the locking tongue in the first groove; when the protrusion slides into the square groove of the push-pull member, the locking tongue retracts, unlocks the first hook, and causes the elastic member to be compressed to obtain elastic force.

[0017] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The locking assembly provided by the present invention only includes four parts: a first sliding member, a second sliding member, an elastic member and a push-pull member, and has a simple structure;

[0019] 2. The push-pull member of the present invention is slidably connected with the protrusions on the first sliding member and the second sliding member through the trapezoidal groove and the square groove connected at the bottom thereof, and under the elastic force of the elastic member, the first sliding member and the second sliding member can be driven to move in opposite directions to push out the lock tongue, or move in opposite directions to retract the lock tongue through a simple push-pull operation;

[0020] 3. The slope of the inclined surface of the protrusion of the present invention is equal to the slope of the side wall of the trapezoidal groove, which can ensure the smooth sliding of the protrusion along the trapezoidal groove;

[0021] 4. The push-pull member of the present invention is provided with an operating portion, such as an operating groove, which can facilitate the user to operate the push-pull movement of the push-pull member by hand;

[0022] 5. The design of the operation mark of the present invention can remind the user of the operation direction of the push-pull member;

[0023] 6. The adapter plate provided by the present invention is provided with a locking assembly and an automatic locking mechanism, and the locking assembly is hidden in the adapter plate, so that the storage boxes of different sizes and shapes can be locked by directly lowering the upper storage box and then moving the push-pull member. Compared with the prior art method of first tilting the small storage box to achieve the plug-in interlocking of the protrusion and the slot, and then rotating the lock buckle to achieve the interlocking of the upper and lower storage boxes, the operation is more convenient and the use experience is better;

[0024] 7. The box cover provided by the present invention is provided with a locking assembly, which can save the setting of the adapter plate when the upper and lower storage boxes are stacked. At the same time, the locking assembly is hidden in the box cover, so that the storage boxes of different sizes and shapes can be locked by directly lowering the upper storage box and then moving the push-pull member. Compared with the prior art method of first tilting the small storage box to achieve the plug-in interlocking of the protrusion and the slot, and then rotating the lock buckle to achieve the interlocking of the upper and lower storage boxes, the operation is more convenient and the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It shows a schematic diagram of the structure before stacking small storage boxes on a large storage box using an adapter plate.

[0026] Figure 2 It shows a schematic diagram of the structure when a small storage box is stacked on a large storage box using an adapter plate.

[0027] Figure 3 Shown is a schematic diagram of the bottom structure of an adapter plate of the present invention.

[0028] Figure 4 It shows the main structural schematic diagram of an automatic locking mechanism on an adapter plate of the present invention.

[0029] Figure 5 Shown is a first angle structural schematic diagram of a locking assembly of the present invention.

[0030] Figure 6 Shown is a second angle structural schematic diagram of a locking assembly of the present invention.

[0031] Figure 7 It is a schematic diagram of the bottom structure of the buckle in the present invention.

[0032] Figure 8 It is a schematic diagram of the structure of the latch, the automatic locking mechanism and the slide rail in the present invention. DETAILED DESCRIPTION

[0033] See also Figure 1-Figure 8 The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0034] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for the technical personnel in this field to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportion relationship or adjustment of the size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0035] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings as understood by a person having ordinary skills in the field to which the present invention belongs. The directional terms such as "upper", "lower", "front", "back", "left" and "right" used in the present invention are based on the attached Figure 1 The orientation of a component does not mean a limitation on the orientation. The words "one", "an" or "the" and the like used in the present invention do not mean a limitation on the quantity, but are only used to indicate the existence of at least one. The words "include" or "comprise" and the like mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The serial numbers assigned to the components in this specification, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" mentioned in the present invention, unless otherwise specified, includes direct and indirect connections.

[0036] In order to avoid confusion with the present invention, some technical features known in the art are not described.

[0037] (Example 1)

[0038] like Figure 1 , Figure 3 and Figure 4 As shown, this embodiment provides an adapter plate 1, including an adapter plate body 10, a locking assembly 20, a latch 30 and an automatic locking mechanism 40. The locking assembly 20 is arranged on the front and rear sides of the upper end surface of the adapter plate body 10; the latch 30 and the automatic locking mechanism 40 are arranged on the left and right sides of the upper end surface of the adapter plate body 10.

[0039] like Figure 5 and Figure 6As shown, the locking assembly 20 includes a first sliding member 21, a second sliding member 22, an elastic member 24 and a push-pull member 23. The first sliding member 21 and the second sliding member 22 are symmetrically arranged in the adapter plate body 10. The following structural description only refers to the first sliding member 21, but it should be understood that the second sliding member 22 has the same structure and operates the same. A locking tongue 211 extending outward is provided on a side wall of the first sliding member 21 away from the second sliding member 22, and a protrusion 212 is provided on the upper end surface of the first sliding member 21. The side of the protrusion 212 facing the locking tongue 211 is an inclined surface 212a. In the present embodiment, the protrusion 212 is a right-angled triangular convex block. The two ends of the elastic member 24 are respectively fixed on the side walls of the first sliding member 21 and the second sliding member 22 that are separated. The push-pull member 23 is arranged in the adapter plate body 10, and a portion of it is exposed from the upper end surface of the adapter plate body 10; the lower end surface of the push-pull member 23 is provided with a trapezoidal groove 231 and a square groove 232 that are interconnected, and the spacing between the two side walls of the square groove 232 is equal to the minimum spacing between the two side walls of the trapezoidal groove 231, and the trapezoidal groove 231 and the square groove 232 are slidably connected to the protrusion 212.

[0040] When the protrusion 212 slides into the trapezoidal groove 231, under the elastic force of the elastic member 24, the locking tongues 211 of the first sliding member 21 and the second sliding member 22 move backward and finally expose the first groove 11 of the adapter plate 1, so that the first hook 2a at the bottom of the upper storage box 2 and the locking tongue 211 are interlocked in the first groove 11; when the protrusion 212 slides into the square groove 232, the locking tongues 211 of the first sliding member 21 and the second sliding member 22 retract, unlock the first hook 2a, and compress the elastic member 24 to obtain elastic force.

[0041] Furthermore, in order to ensure the smooth sliding of the protrusion 212 along the trapezoidal groove 231 , the slope of the side wall of the trapezoidal groove 231 is equal to the slope of the inclined surface 212 a .

[0042] Furthermore, in order to facilitate the operation of the push-pull member 23 to move, an operating portion 233 may be provided on the upper end surface of the push-pull member 23 exposed from the adapter plate body 10 , and the operating portion 233 may be a groove, a protrusion, etc.

[0043] Furthermore, in order to conveniently indicate the operation direction of the push-pull member 23 , an operation mark 234 may be provided on the upper end surface of the push-pull member 23 exposed from the adapter plate body 10 . The operation mark 234 may be a direction arrow and may be provided on the operating portion 233 .

[0044] Please review Figure 1 , and combined with Figure 7 and Figure 8 The left and right side surfaces of the adapter plate body 10 are each provided with a first installation groove 13 for installing the buckle 30, and the upper end surface of the first installation groove 13 is provided with an opening, and the opening penetrates the upper end surface of the adapter plate body 10. An automatic locking mechanism 40 and a slide rail 50 are installed on the back side of the lower end surface of the first installation groove 13, and the automatic locking mechanism 40 is arranged in the back cavity of the adapter plate body 10. The slide rail 50 is fixedly installed on the adapter plate body 10 by screws, and the automatic locking mechanism 40 is restricted in the back cavity of the adapter plate body 10. A guide block 51 is provided on the upper end surface of the slide rail 50.

[0045] The upper end surface of the clip 30 is provided with a clipping portion 31 and a mounting through hole 32, a part of the mounting through hole 32 exceeds the projection area of ​​the clip 31, and the other part is located in the projection area of ​​the clip 31; only the positioning pin protrusion 411 of the automatic locking mechanism 40 can be exposed from the upper end surface of the clip 30 through the mounting through hole 32. Furthermore, a direction indicator icon is provided on the clip 30, and the direction indicator icon can be provided on the top surface of the clip 31, so that the operator can know the operation direction of the clip 30. At the same time, in order to facilitate the installation of the clip 30 in the first mounting groove 13 and facilitate the movement of the clip 30 in the first mounting groove 13, an operation groove can be provided in the middle of the clip 31 to facilitate the installation and movement by the operator.

[0046] A limiting groove 321 is provided at the bottom of the mounting through hole 32. The width of the limiting groove 321 is greater than the width of the mounting through hole 32. The width of the mounting through hole 32 can accommodate the positioning pin protrusion 411 and allow it to slide therein, but cannot accommodate the positioning pin body. The width of the limiting groove 321 can accommodate the positioning pin body; therefore, the positioning pin can pass through the mounting through hole 32 from one side of the limiting groove 321 to expose the upper end surface of the buckle 30, and once the positioning pin 411 enters the limiting groove 321, the limiting groove 321 can limit the sliding of the positioning pin 411. The lower end surface of the buckle 30 is also provided with a connecting portion 33 for fixing and installing the first elastic member 43. The lower end surface of the buckle 30 is also provided with a guide groove 34 for accommodating and cooperating with the guide block 51 for sliding.

[0047] Please combine Figure 4The automatic locking mechanism 40 includes a positioning pin assembly 41, a fixing seat 42 and a first elastic member 43. The upper end of the positioning pin assembly 41 (i.e., the positioning pin protrusion 411) is exposed from the upper end surface of the buckle 30 through the mounting through hole 32; the fixing seat 42 is T-shaped, with a first end fixed to the connecting portion 33, a second end fixedly connected to the left / right end of the first elastic member 43, and a third end used to abut against the positioning pin assembly 41; the right / left end of the first elastic member 43 is fixed to the adapter plate body 10.

[0048] The positioning pin assembly 41 is mounted on the limit block 14 at the lower end surface of the adapter plate body 10 through its extension portion 412, so that the positioning pin protrusion 411 and the second elastic member 413 are respectively arranged at both ends of the limit block 14. One end of the second elastic member 413 is fixedly connected to the inner wall of the extension portion 412, and the other end is fixedly connected to one end of the limit block 14.

[0049] Please combine Figure 1-Figure 3 The adapter plate 1 is used to transfer storage boxes of different sizes. For example, in this embodiment, the lower storage box 3 is a large storage box, and the upper storage box 2 is a small storage box. The sizes of the two upper storage boxes 2 are similar to the size of one lower storage box 3. The adapter plate 1 is located between the lower storage box 3 and the upper storage box 2. Specifically, the adapter plate 1 is locked with the buckle 3a of the lower storage box 3 through the hook 1a on the lower end surface.

[0050] Before stacking the upper storage box 2, the locking tongue 211 of the locking assembly 20 of the adapter plate 1 is completely exposed from the first groove 11. At this time, the protrusion 212 is located in the square groove 232, and the elastic member 24 is compressed; the initial position of the buckle 30 on the adapter plate body 10 is that the positioning pin body is restricted in the limiting groove 321, the first elastic member 43 is in a compressed state, and the main body of the positioning pin assembly 41 is against the limiting block 14. When the upper storage box 2 is stacked, it is directly placed vertically downward on the adapter plate 1, and the first hook 2a of the upper storage box 2 just falls into the first groove 11, and the second hook 2b can just press down the positioning pin protrusion 411, and the positioning pin protrusion 411 completely falls into the limiting groove 321, and the positioning pin body releases the limit of the buckle 30, so that the elastic force of the first elastic member 43 is greater than the pressure thereon, and its left end automatically performs a reset movement to the left, pushing the connecting portion 33 (i.e., the buckle 30) to the left to reach the locked state, and the buckle 30 of the adapter plate 1 completes the locking with the upper storage box 2. The second hook 2b is automatically engaged; then the push-pull member 23 is pushed toward the center of the adapter plate 1, and the protrusion 212 slides from the square groove 232 into the trapezoidal groove 231 under the pressure of the push-pull member 23. Since the distance between the two side walls of the trapezoidal groove 231 is greater than the distance between the two side walls of the square groove 232, the first sliding member 21 and the second sliding member 22 move away from each other under the elastic force of the elastic member 24, so that the locking tongue 211 is exposed from the first groove 11 of the adapter plate body 10, so that the first hook 2a at the bottom of the upper storage box 2 and the locking tongue 211 are interlocked in the first groove 11.

[0051] When the upper storage box 2 is unlocked, the push-pull member 23 is first pulled out toward the center of the adapter plate 1. Then, under the pressure of the push-pull member 23, the protrusion 212 slides along the side wall of the trapezoidal groove 231 and finally slides into the square groove 232. Then, the locking tongues 211 of the first sliding member 21 and the second sliding member 22 are reset and retracted, disengaging from the first hook 2a to complete the unlocking of the locking assembly 20. Then, the buckle is pulled in the direction indicated by the direction indicator icon (i.e., to the right). The fixing seat 42 is pulled rightward by the locking member 30, and the locking member 30 drives the fixing seat 42 to be pulled rightward. During the process, the elastic force of the first elastic member 43 is less than the pressure thereon, and the left end thereof is compressed rightward under the drive of the fixing seat 42, pushing the connecting portion 33 (i.e., the locking member 30) rightward. When the limiting groove 321 moves forward to the position where the positioning pin protrusion 411 is located, the positioning pin protrusion 411 moves upward into the limiting groove 321, and the positioning pin 411 is limitedly bound to the locking member 30, and the locking member 30 is continuously pulled rightward. The buckle 30 can drive the positioning pin protrusion 411 to move rightward together. The elastic force on the second elastic member 413 is less than the pressure thereon, and its left end performs a rightward compression movement until the main body of the positioning pin assembly 41 abuts against the adapter plate body 10. At this time, the second hook 2b at the bottom of the upper storage box 2 has completely disengaged from the buckle of the lower storage box 3, and the positioning pin protrusion 411 moves to the right side of the second hook 2b. Release the buckle 30, the first elastic member 43 and the The elastic force on the second elastic member 413 is greater than the pressure on it, and its left end performs a reset movement to the left until the left end of the positioning pin protrusion 411 is pressed against the right end of the second hook 2b and is limited (that is, the fastener is in an unlocked state); finally, after the upper storage box 2 is removed upward, the first elastic member 43 and the second elastic member 413 continue to push the fastener 30 and the positioning pin body to move to the left under the action of elastic force until the main body of the positioning pin assembly 41 is pressed against the limit block 14 and returns to its initial state.

[0052] (Example 2)

[0053] The difference from the embodiment 1 is that when stacking the lower storage box 3 and the upper storage box 2, the adapter plate 1 is not used, and the locking assembly 20 is directly arranged on the box cover 3b of the lower storage box 3. The structure of the locking assembly 20 on the box cover 3b, i.e., the setting position, and the locking and unlocking process of the upper storage box 2 and the box cover 3b are the same as those in the embodiment 1, and will not be described in detail here.

[0054] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value. The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A locking assembly, characterized in that: include A first sliding member and a second sliding member are symmetrically arranged on the left and right sides, and the separated side walls of the first sliding member and the second sliding member respectively have locking tongues extending outwards; A push-pull member, slidably connected to the first sliding member and the second sliding member, and used to drive the first sliding member and the second sliding member to move in opposite directions or towards each other; The elastic member has two ends respectively fixed on the first sliding member and the second sliding member, and is used to provide a force to make the first sliding member and the second sliding member move in opposite directions.

2. The locking assembly according to claim 1, characterized in that: The upper end surfaces of the first sliding member and the second sliding member are respectively provided with protrusions; the side of the protrusion facing the locking tongue is an inclined surface; the bottom surface of the push-pull member is provided with a connected trapezoidal groove and a square groove, and the spacing between the two side walls of the square groove is equal to the minimum spacing between the two side walls of the trapezoidal groove; the trapezoidal groove and the square groove are slidably connected to the protrusion.

3. The locking assembly according to claim 2, characterized in that: The slope of the side wall of the trapezoidal groove is equal to the slope of the inclined surface.

4. The locking assembly according to claim 1, characterized in that: An operating portion is provided on the upper end surface of the push-pull member for conveniently operating the push-pull member to move.

5. An adapter plate, characterized in that: It comprises a locking assembly as claimed in any one of claims 1 to 4.

6. The adapter plate according to claim 5, characterized in that: The two locking components are respectively hidden and arranged on the front and rear sides of the upper end face of the adapter plate, and the operating part and the operating mark of the push-pull member are exposed on the upper end face of the adapter plate; when the protrusions of the first sliding member and the second sliding member slide into the trapezoidal groove of the push-pull member, under the elastic force of the elastic member, the locking tongues of the first sliding member and the second sliding member move backward and finally expose the first groove of the adapter plate, so that the first hook at the bottom of the upper storage box and the locking tongue are interlocked in the first groove; when the protrusion slides into the square groove of the push-pull member, the locking tongue retracts, unlocks the first hook, and causes the elastic member to be compressed to obtain elastic force.

7. The adapter plate according to claim 6, characterized in that: A snap-fitting piece and an automatic locking mechanism are provided on both the front and rear sides of the upper end face of the adapter plate; the snap-fitting piece is movably mounted on the adapter plate, and a snap-fitting portion is provided on its upper end face; the automatic locking mechanism is arranged inside the adapter plate, and its upper end is exposed at the upper end face of the snap-fitting piece.

8. The adapter plate according to claim 7, characterized in that: The upper end surface of the buckle is also provided with a mounting through hole connected to the upper end surface of the adapter plate; the lower end surface of the buckle is provided with a connecting portion; the automatic locking mechanism includes a positioning pin assembly, the upper end of which is exposed from the upper end surface of the buckle through the mounting through hole; A fixing seat, which is T-shaped, has a first end fixedly disposed on the connecting portion, a second end fixedly connected to the left / right end of the first elastic member, and a third end used to abut against the positioning pin assembly; The right / left end of the first elastic member is fixed to the adapter plate.

9. A box cover, characterized in that: It comprises a locking assembly as claimed in any one of claims 1 to 4.

10. The box cover according to claim 9, characterized in that: The two locking components are respectively hidden and arranged on the front and rear sides of the upper end face of the adapter plate, and the operating part and the operating mark of the push-pull member are exposed on the upper end face of the adapter plate; when the protrusions of the first sliding member and the second sliding member slide into the trapezoidal groove of the push-pull member, under the elastic force of the elastic member, the locking tongues of the first sliding member and the second sliding member move backward and finally expose the first groove of the adapter plate, so that the first hook at the bottom of the upper storage box and the locking tongue are interlocked in the first groove; when the protrusion slides into the square groove of the push-pull member, the locking tongue retracts, unlocks the first hook, and causes the elastic member to be compressed to obtain elastic force.

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