Locking assembly, adapter plate and box cover

Abstract

The invention provides a locking assembly, an adapter plate and a box cover, 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; and 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 back to back or face to face. 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, an adapter plate and a box cover. 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, an adapter plate and a box cover, which can solve the problems of complex lock structure and numerous parts in the prior art; 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 the separated side walls respectively; 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.

[0007] In one embodiment, inclined protrusions are respectively provided on the upper end surfaces of the first sliding member and the second sliding member; a first slide groove and a second slide groove are provided on the lower end surface of the push-pull member, the first slide groove and the second slide groove are arranged in a V shape, and are slidably connected to the protrusions of the first sliding member and the second sliding member respectively; the length of the first slide groove and the second slide groove is greater than the length of the protrusion.

[0008] 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.

[0009] In one embodiment, an elastic positioning portion is provided at one end of the push-pull member away from the operating portion, and a limiting protrusion is provided on an upper end surface of the elastic positioning portion.

[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 to the side where the first slide groove and the second slide groove of the push-pull member are separated, the locking tongues of the first sliding member and the second sliding member are exposed from 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 to the side close to the first slide groove and the second slide groove, the locking tongue retracts and unlocks the first hook.

[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 to the side where the first slide groove and the second slide groove of the push-pull member are separated, the locking tongues of the first sliding member and the second sliding member are exposed from 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 to the side close to the first slide groove and the second slide groove, the locking tongue retracts and unlocks the first hook.

[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 three parts: a first sliding member, a second sliding 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 first sliding groove and the second sliding groove arranged in a V shape at the bottom, so that 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 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 member by hand;

[0021] 4. The design of the elastic positioning part of the present invention can limit the position of the push-pull member, improve the user's operating experience, and avoid the push-pull member from accidentally shifting and causing locking failure;

[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 cross-sectional view of a small storage box stacked on a large storage box using an adapter plate.

[0028] Figure 4 Shown is a schematic diagram of the bottom structure of an adapter plate of the present invention.

[0029] Figure 5 It shows the main structural schematic diagram of an automatic locking mechanism on an adapter plate of the present invention.

[0030] Figure 6 Shown is a 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 push-pull member in the present invention.

[0032] Figure 8 Shown is a structural schematic diagram of yet another locking assembly of the present invention.

[0033] Fig. 9 It is a schematic structural diagram showing a transfer plate with limiting grooves on the bottom surface of the present invention.

[0034] Fig.10 It is a schematic diagram of the bottom structure of the buckle in the present invention.

[0035] Fig.11It is a schematic diagram of the structure of the latch, the automatic locking mechanism and the slide rail in the present invention. DETAILED DESCRIPTION

[0036] See also Figure 1-Figure 11 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.

[0037] 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.

[0038] 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.

[0039] In order to avoid confusion with the present invention, some technical features known in the art are not described.

[0040] (Example 1)

[0041] like Figure 1 , Figure 4 and Figure 5 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.

[0042] like Figure 6 and Figure 7As shown, the locking assembly 20 includes a first sliding member 21, a second sliding member 22 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 an inclined protrusion 212 is provided on the upper end surface of the first sliding member 21. The protrusion 212 is in the shape of a long strip, and one end is located near a side wall of the first sliding member 21 close to the second sliding member 22. The push-pull member 23 is disposed in the adapter plate body 10, and a portion thereof is exposed from the upper end surface of the adapter plate body 10; a first slide groove 231 and a second slide groove 232 are disposed on the lower end surface of the push-pull member 23, and the first slide groove 231 and the second slide groove 232 are arranged in a V shape, and are respectively slidably connected to the protrusions 212 of the first sliding member 21 and the second sliding member 22. The length of the 231 and the second slide groove 232 is greater than the length of the protrusion 212.

[0043] When the protrusion 212 slides to the side where the first slide groove 231 and the second slide groove 232 are separated, the locking tongues 211 of the first sliding member 21 and the second sliding member 22 are 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; when the protrusion 212 slides to the side where the first slide groove 231 and the second slide groove 232 are close, the locking tongues 211 of the first sliding member 21 and the second sliding member 22 are retracted and disengaged from the first hook 2a to complete the unlocking.

[0044] 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.

[0045] Furthermore, in order to conveniently indicate the operating 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 .

[0046] Furthermore, if Figure 8 and Fig. 9As shown, in order to limit the push-pull position of the push-pull member 23, improve the user's operating experience, and prevent the push-pull member 23 from accidentally shifting and causing locking failure, an elastic positioning portion 235 can be provided at one end of the push-pull member 23 away from the operating portion 233, and a limiting convex portion is provided on the upper end surface of the elastic positioning portion 235. The cross-section of the limiting convex portion is semicircular, and cooperates with the limiting groove 12 on the lower bottom surface of the adapter plate body 10 to limit the displacement of the push-pull member 23. Four limiting grooves 12 are respectively provided on the front and rear sides of the adapter plate body 10, and the four limiting grooves 12 on one side are arranged in parallel in pairs, and are respectively used to limit the locking position or the unlocking position.

[0047] Please review Figure 1 , and combined with Fig.10 and Fig.11 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.

[0048] 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.

[0049] 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.

[0050] Please combine Figure 5 The 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.

[0051] 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.

[0052] 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.

[0053] Before stacking the upper storage boxes 2, the locking tongue 211 of the locking assembly 20 of the adapter plate 1 is completely not exposed from the first groove 11, and the initial position of the fastener 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 stacking the upper storage boxes 2, they are 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 fastener 30, so that the elastic force of the first elastic member 43 is greater than the pressure on it, and its left end automatically performs a reset movement to the left, pushing the connecting portion 33 (i.e., the fastener 30) to the left to reach the locked state, then the fastener of the adapter plate 1 The push-pull member 23 is then pushed toward the center of the adapter plate 1. The protrusion 212 slides along the first slide groove 231 and the second slide groove 232 to the side where the first slide groove 231 and the second slide groove 232 are separated under the pressure of the push-pull member 23. The locking tongue 211 of the first sliding member 21 and the second sliding member 22 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.

[0054] 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 first slide groove 231 and the second slide groove 232 to the side close to the first slide groove 231 and the second slide groove 232. Then, the locking tongues 211 of the first sliding member 21 and the second sliding member 22 are retracted and disengaged from the first hook 2a to complete the unlocking of the locking assembly 20. Then, according to the prompt direction of the direction indicator icon ( The locking member 30 is pulled to the right by the locking member 30, and the locking member 30 drives the fixing seat 42 to be pulled to the right. During the process, the elastic force of the first elastic member 43 is less than the pressure thereon, and the left end thereof is driven by the fixing seat 42 to perform a rightward compression movement, pushing the connecting portion 33 (i.e. the locking member 30) to the right. 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. , continue to pull the buckle 30 to the right, which can drive the positioning pin protrusion 411 to move to the right together. The elastic force on the second elastic member 413 is less than the pressure on it, 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 elastic force on the second elastic member 413 is greater than the pressure thereon, and the left end thereof performs a reset movement to the left until the left end of the positioning pin protrusion 411 abuts against the right end of the second hook 2b and is limited (i.e., the latch 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 latch 30 and the positioning pin body to move to the left under the action of the elastic force until the main body of the positioning pin assembly 41 abuts against the limit block 14 and returns to its initial state.

[0055] (Example 2)

[0056] 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.

[0057] 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; The push-pull member is slidably connected with 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 in opposite directions or towards each other.

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 inclined protrusions; the lower end surface of the push-pull member is provided with a first sliding groove and a second sliding groove, the first sliding groove and the second sliding groove are arranged in a V shape, and are slidably connected with the protrusions of the first sliding member and the second sliding member respectively; The lengths of the first sliding groove and the second sliding groove are greater than the length of the protrusion.

3. The locking assembly according to claim 2, 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.

4. The locking assembly according to claim 3, characterized in that: An elastic positioning portion is arranged at one end of the push-pull member away from the operating portion, and a limiting convex portion is arranged on the upper end surface of the elastic positioning portion.

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 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 to the side where the first slide groove and the second slide groove of the push-pull member are separated, the locking tongues of the first sliding member and the second sliding member 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 to the side close to the first slide groove and the second slide groove, the locking tongue retracts and unlocks the first hook.

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 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 to the side where the first slide groove and the second slide groove of the push-pull member are separated, the locking tongues of the first sliding member and the second sliding member 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 to the side close to the first slide groove and the second slide groove, the locking tongue retracts and unlocks the first hook.

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