Limiting connecting mechanism for surface cover of electric draw-bar box

Abstract

The utility model discloses an electric draw-bar box surface cover limit connecting mechanism which comprises a front shell, a middle frame and a surface cover, the front shell is provided with an embedding opening, the middle frame is fixedly arranged in the embedding opening, an inner splayed structure is arranged between the outer side wall of the middle frame and the inner side wall of the embedding opening, and the surface cover is fixedly arranged in the middle frame. The surface cover covers the front side of the embedding opening, an edge covering part is formed on the edge of the surface cover, the edge covering part is inserted into the inner splayed structure, a limiting part is formed on the inner side wall of the embedding opening, the limiting part protrudes towards the center direction of the embedding opening, the limiting part and the end of the edge covering part are arranged in an aligned mode, and the inner splayed structure is arranged on the inner side wall of the surface cover. And when the surface cover bears pressure, the edge covering part retracts towards the inner splayed structure until the end part of the edge covering part abuts against the limiting part. According to the utility model, the surface cover can be limited, and the loading capacity of the surface cover can be improved.

Description

Technical Field

[0001] The utility model relates to an electric trolley case, in particular to a surface cover limiting connection mechanism of the electric trolley case. Background Art

[0002] An electric trolley case includes a shell, running wheels arranged at the bottom of the shell, and a running drive mechanism arranged in the shell. The running wheels are driven by the running drive mechanism to move, and a storage space for accommodating items is provided in the shell. The shell part includes a front shell and a surface cover, and the two are generally spliced ​​and connected. When the surface cover is subjected to external forces such as sitting and pressure, the surface cover is prone to collapse into the front shell, which may cause damage and other adverse factors. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an electric trolley case cover limiting connection mechanism which can limit the cover and improve the pressure bearing capacity of the cover in view of the deficiencies in the prior art.

[0004] In order to solve the above technical problems, the present utility model adopts the following technical solutions.

[0005] A cover limit connection mechanism for an electric trolley case comprises a front shell, a middle frame and a cover, wherein the front shell is provided with an embedding opening, the middle frame is fixed in the embedding opening, and an inner eight-shaped structure is provided between the outer wall of the middle frame and the inner wall of the embedding opening, the cover covers the front side of the embedding opening, the edge of the cover is formed with a edging portion, the edging portion is inserted in the inner eight-shaped structure, the inner wall of the embedding opening is formed with a limiting portion, the limiting portion protrudes toward the center direction of the embedding opening, and the limiting portion is aligned with the end of the edging portion. When the cover is under pressure, the edging portion retracts into the inner eight-shaped structure until the end of the edging portion abuts against the limiting portion.

[0006] Preferably, a first inclined portion is formed on an edge of the front shell, a second inclined portion is formed on an edge of the surface cover, and the first inclined portion and the second inclined portion are flush with each other.

[0007] Preferably, the angle between the limiting portion and the inner wall of the inner toe structure is an obtuse angle.

[0008] Preferably, a plurality of first fixing columns are provided on the middle frame, and a plurality of second fixing columns are fixed on the surface cover. The first fixing columns correspond to the second fixing columns one by one and are fixedly connected by screws.

[0009] Preferably, an indicator light assembly is embedded on the surface cover.

[0010] In the electric trolley case face cover limiting connection mechanism disclosed by the present invention, the middle frame is fixedly installed on the inner side of the front shell, and an inner eight-shaped structure for accommodating the edging portion is preset between the outer side wall of the middle frame and the inner side wall of the front shell. When the face cover covers the embedding opening, the edging portion is inserted into the inner eight-shaped structure, and at the same time, the limiting portion of the inner side wall of the embedding opening is aligned with the end of the edging portion. The face cover and the middle frame can be fixed by screws and other components. When the face cover is subjected to external forces such as seating and pressure, the edging portion can appropriately retract into the inner eight-shaped structure, and the limiting portion plays a role of resisting and limiting the end of the edging portion, so that the face cover has stronger pressure-bearing capacity, thereby improving the structural reliability of the front and rear shells of the electric trolley case. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional diagram of the assembled front shell, middle frame and face cover;

[0012] Figure 2 This is an exploded view of the front shell, middle frame and face cover;

[0013] Figure 3 This is a structural diagram of the front shell and middle frame;

[0014] Figure 4 A three-dimensional diagram of the face cover;

[0015] Figure 5 This is the front view of the assembled front shell, middle frame and cover;

[0016] Figure 6 for Figure 5 Sectional view along line AA. DETAILED DESCRIPTION

[0017] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0018] The utility model discloses a limit connection mechanism for the cover of an electric trolley case, Figures 1 to 6 As shown, it includes a front shell 1, a middle frame 2 and a face cover 3, the front shell 1 is provided with an embedding opening 10, the middle frame 2 is fixed in the embedding opening 10, and an inner eight-shaped structure 11 is provided between the outer side wall of the middle frame 2 and the inner side wall of the embedding opening 10, the face cover 3 covers the front side of the embedding opening 10, the edge of the face cover 3 is formed with a edging portion 30, the edging portion 30 is inserted in the inner eight-shaped structure 11, the inner side wall of the embedding opening 10 is formed with a limiting portion 12, the limiting portion 12 protrudes toward the center direction of the embedding opening 10, and the limiting portion 12 is aligned with the end of the edging portion 30. When the face cover 3 is under pressure, the edging portion 30 retracts into the inner eight-shaped structure 11 until the end of the edging portion 30 is against the limiting portion 12.

[0019] In the above structure, the middle frame 2 is fixedly installed on the inner side of the front shell 1, and an inner eight-shaped structure 11 for accommodating the edging portion 30 is preset between the outer wall of the middle frame 2 and the inner wall of the front shell 1. When the face cover 3 covers the embedding opening 10, the edging portion 30 is inserted into the inner eight-shaped structure 11, and at the same time, the limiting portion 12 of the inner wall of the embedding opening 10 is aligned with the end of the edging portion 30. The face cover 3 and the middle frame 2 can be fixed by screws and other components. When the face cover 3 is subjected to external forces such as sitting and pressing, the edging portion 30 can appropriately retract into the inner eight-shaped structure 11, and the limiting portion 12 plays a role in resisting and limiting the end of the edging portion 30, so that the face cover has stronger pressure-bearing capacity, thereby improving the structural reliability of the front and rear shells of the electric trolley case.

[0020] In order to make the surface of the front shell 1 and the cover 3 smooth and more compatible, in this embodiment, see Figure 1 and Figure 6 The edge of the front shell 1 is formed with a first inclined portion 13, and the edge of the surface cover 3 is formed with a second inclined portion 31. The first inclined portion 13 and the second inclined portion 31 are flush with each other.

[0021] As a preferred method, see Figure 6 The angle between the limiting portion 12 and the inner wall of the inner toe-shaped structure 11 is an obtuse angle. Based on this obtuse angle design, this embodiment can make the width of the inner toe-shaped structure 11 gradually increase from the inside to the outside, thereby better matching with the edge portion 30.

[0022] Regarding the preferred fixing method between the middle frame 2 and the cover 3, in this embodiment, combined with Figure 3 and Figure 4 As shown, the middle frame 2 is provided with a plurality of first fixing columns 20, and the surface cover 3 is fixed with a plurality of second fixing columns 32. The first fixing columns 20 correspond to the second fixing columns 32 one by one and are fixedly connected by screws.

[0023] See Figure 2 In this embodiment, an indicator light assembly 4 is embedded on the surface cover 3 .

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cover limit connection mechanism for an electric trolley case, characterized in that: The invention comprises a front shell (1), a middle frame (2) and a cover (3); the front shell (1) is provided with an embedding opening (10); the middle frame (2) is fixed in the embedding opening (10); and an inner eight-shaped structure (11) is provided between the outer wall of the middle frame (2) and the inner wall of the embedding opening (10); the cover (3) covers the front side of the embedding opening (10); an edge portion (30) is formed on the edge of the cover (3); the edge portion (30) is inserted into the In the inner eight-shaped structure (11), a limiting portion (12) is formed on the inner side wall of the embedding opening (10), and the limiting portion (12) protrudes toward the center of the embedding opening (10). The limiting portion (12) is aligned with the end of the edging portion (30). When the cover (3) is subjected to pressure, the edging portion (30) retracts into the inner eight-shaped structure (11) until the end of the edging portion (30) abuts against the limiting portion (12).

2. The electric suitcase cover limiting connection mechanism according to claim 1, characterized in that: The edge of the front shell (1) is formed with a first inclined portion (13), and the edge of the surface cover (3) is formed with a second inclined portion (31), and the first inclined portion (13) and the second inclined portion (31) are flush with each other.

3. The electric suitcase cover limiting connection mechanism according to claim 1, characterized in that: The included angle between the limiting portion (12) and the inner wall of the inner eight-shaped structure (11) is an obtuse angle.

4. The electric suitcase cover limiting connection mechanism according to claim 1, characterized in that: The middle frame (2) is provided with a plurality of first fixing columns (20), and the surface cover (3) is fixed with a plurality of second fixing columns (32). The first fixing columns (20) correspond to the second fixing columns (32) one by one and are fixedly connected by screws.

5. The electric suitcase cover limiting connection mechanism according to claim 1, characterized in that: An indicator light assembly (4) is embedded on the surface cover (3).

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