High-strength draw-bar box

Abstract

The utility model discloses a high-strength draw-bar box, which belongs to the field of draw-bar boxes, is used for draw-bar boxes, and comprises a draw bar, a draw bar storage part, a rear box body, a connecting part, a front box body and rollers, the rear box body and the front box body are respectively provided with a plurality of grooves with outer reinforcing parts, and box body inner ribs are arranged in the rear box body and the front box body at positions corresponding to the grooves; a movable plate which moves relatively is arranged in a space formed by the outer reinforcing part and the groove; the front box body side inner plate, the front box body top inner plate and the front box body bottom inner plate are compounded on the front box body, and the rear box body top inner plate, the rear box body side inner plate and the rear box body bottom inner plate are compounded on the rear box body. According to the technical scheme, the structural strength of the draw-bar box can be improved by improving the structure of the draw-bar box, the impact resistance of the draw-bar box for resisting external impact is improved, and the practicability of the draw-bar box is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of trolley cases, and in particular, relates to a high-strength trolley case. BACKGROUND

[0002] Trolley cases mainly include a box body with wheels, a trolley with a telescopic structure is arranged on the box body, and are widely used in life. Since the main material of the trolley case is plastic material, it has the characteristics of light weight, but also has poor compression resistance, and is easy to be damaged due to its own strength problems.

[0003] To solve this problem, the prior art provides a variety of solutions, for example, the patent document with the patent number CN221430490U discloses a high-strength impact-resistant trolley case frame structure, and specifically discloses the following technical content: a main body assembly; a moving assembly arranged below the main body assembly; an auxiliary assembly arranged below the main body assembly and on the same horizontal line as the moving assembly; a fixed block arranged at the rear side of the middle end of the main body assembly; two password locks, two password locks are symmetrically arranged on the side of the main body assembly; a handle arranged between the two password locks. The above prior art sets the main body assembly, uses the structure of the main body assembly itself to achieve high-strength impact resistance, sets an anti-collision strip on the outer wall of the box body to effectively avoid damage to the trolley case due to impact, and solves the problem that the overall thickness of the shell cannot be too thin due to poor compression resistance and deformation resistance, thereby causing the weight of the box body to be too heavy.

[0004] However, the applicant believes that in the above prior art, although an impact-resistant main body assembly and an anti-collision strip on the outer wall of the box body are provided, the anti-collision strip is still directly connected with the box body, and when subjected to external impact, the force is directly transmitted to the box body, which can also cause damage to the box body. At the same time, the above structure also lacks improvement of the internal structure of the box body, and cannot improve the strength of the box body as a whole. SUMMARY

[0005] The purpose of the present application is to provide a high-strength trolley case which can improve the structural strength of the trolley case through improvement of the structure of the trolley case, improve the impact resistance of the trolley case to external impact, and improve the practicality of the trolley case.

[0006] To achieve the above purpose, the present application is realized by the following technical scheme:

[0007] The high-strength trolley case disclosed in the application comprises a trolley, which is accommodated in a trolley storage part, the trolley storage part is connected with a rear case body in an integrated manner, the rear case body is connected with a front case body through a connecting part, and the front case body, the connecting part and the rear case body form a storage space for containing articles. Rollers are arranged at the bottom of the rear case body and the front case body. A plurality of grooves are arranged along the shell at the outer shell of the rear case body and the front case body. Box inner reinforcing bodies are arranged at positions corresponding to the grooves in the interior of the rear case body and the front case body. Outer reinforcing parts corresponding to the grooves are arranged at the edge positions of the grooves and protrude from the shell. A space formed by the outer reinforcing parts and the grooves is provided with a movable plate capable of moving relative to the space. The front case body is provided with a front case body side inner plate, a front case body top inner plate and a front case body bottom inner plate on the inner wall. The rear case body is provided with a rear case body top inner plate, a rear case body side inner plate and a rear case body bottom inner plate in the interior. The front case body side inner plate, the front case body top inner plate and the front case body bottom inner plate are combined on the front case body. The rear case body top inner plate, the rear case body side inner plate and the rear case body bottom inner plate are combined on the rear case body.

[0008] As one of the preferred technical solutions of the application, the rear case body and the front case body are provided with box inner supporting plates matched with the grooves in the grooves. The longitudinal section of the box inner supporting plate is U-shaped. The box inner supporting plate is provided with through holes communicating with the interior space in the direction towards the exterior of the rear case body and the front case body. A moving jack is slidably arranged in the through hole. One end of the moving jack is connected with the movable plate. The other end of the moving jack is connected with an elastic limiting block and a return spring. The elastic limiting block and the return spring are located in a guide limiting sleeve. The elastic limiting block and the return spring are arranged on the two sides of the bottom limiting end of the moving jack.

[0009] As one of the preferred technical solutions of the application, the bottom limiting end of the moving jack is an annular block. The circumferential outer wall of the annular block is slidably arranged with the inner wall of the guide limiting sleeve.

[0010] As one of the preferred technical solutions of the application, the inner end face of the front case body bottom inner plate, the front case body top inner plate, the rear case body top inner plate and the rear case body bottom inner plate is processed with a plurality of shock-absorbing blocks. The shock-absorbing blocks are sponge pad bodies filled in the blind holes of the front case body bottom inner plate, the front case body top inner plate, the rear case body top inner plate and the rear case body bottom inner plate.

[0011] As one of the preferred technical solutions of the application, the movable plate is a multi-section structure, comprising a straight plate body located at the end face of the rear case body and the front case body, a transition plate body located at the smooth transition part of the corner of the rear case body and the front case body, and a side plate body located at the side face of the rear case body and the front case body.

[0012] As one of the preferred technical solutions of the application, the connecting part comprises a guard plate located at the contact part of the rear case body and the front case body. A zipper structure and a password locking device are respectively connected to the guard plate.

[0013] Compared with the prior art, the application has the beneficial effects that:

[0014] 1、The application realizes the strength enhancement of the trolley case in the circumferential direction by setting a plurality of outer reinforcing parts and a box inner rib body matched with the outer reinforcing parts, and the above structure can be matched with the connecting part. Meanwhile, the application sets a front case side inner plate, a rear case side inner plate, a front case top inner plate, a rear case top inner plate, a rear case bottom inner plate and other structures in the rear case and the front case respectively, and the above structures are respectively combined with the rear case and the front case, thereby improving the structural strength of the trolley case as a whole.

[0015] 2、The application improves the impact resistance of the trolley case by setting an outer reinforcing part and a movable plate moving relative to the outer reinforcing part, and the movable plate is a multi-section plate body, which can improve the impact resistance of the trolley case from the end surface of the case, the corner transition part and the side surface of the case. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the application Figure 1 (Omit the password locking device of the top end surface of the rear case, the same below).

[0017] Figure 2 is a perspective view of the application Figure 2 .

[0018] Figure 3 is a front view of the application.

[0019] Figure 4 is Figure 3 the sectional view of the position and direction shown in A-A of

[0020] Figure 5 is Figure 4 the local enlarged view of the I part of

[0021] In the figure: 1, trolley; 2, rear case; 3, connecting part; 4, front case; 5, outer reinforcing part; 6, movable plate; 7, roller; 8, trolley storage part; 9, front case side inner plate; 10, rear case side inner plate; 11, front case bottom inner plate; 12, front case top inner plate; 13, rear case top inner plate; 14, box inner support plate; 15, rear case bottom inner plate; 16, moving top rod; 17, guide limiting sleeve; 18, elastic limiting block; 19, reset spring; 20, box inner rib body; 21, shock absorbing block. DETAILED DESCRIPTION

[0022] The technical solutions described in the application will be further described and explained in combination with the drawings and examples.

[0023] Example 1: as Figures 1 to 5As shown, a high-strength trolley case includes a rear case 2 and a front case 4 that form a storage space when closed. The rear case 2 and the front case 4 are closed by a connecting part 3. The rear case 2 has an integrally formed pull rod storage part 8 at the back position. The pull rod storage part 8 is provided with a pull rod 1 in the form of a pull handle. The bottom of the rear case 2 and the front case 4 are provided with a number of rollers 7. The rear case 2 and the front case 4 have a number of grooves distributed on the outer shell. The inner walls of the rear case 2 and the front case 4 are provided with internal ribs 20 at the positions corresponding to the grooves. The shape of the internal ribs 20 on the inner walls of the rear case 2 and the front case 4 is the same as the shape of the grooves on the outer walls of the rear case 2 and the front case 4.

[0024] The rear housing 2 and the front housing 4 are provided with outer reinforcing parts 5 at the upper and lower edges of the grooves, respectively. The outer reinforcing parts 5 and the grooves form a space to accommodate the movable plate 6, and the movable plate 6 moves relative to the outer reinforcing parts 5 within the space.

[0025] The front box 4 has a top inner panel 12 and a bottom inner panel 11 inside. A side inner panel 9 is provided at the inner end face between the top inner panel 12 and the bottom inner panel 11. The top inner panel 12, the side inner panel 9, and the bottom inner panel 11 are integrated with the front box 4.

[0026] The rear box 2 has a top inner panel 13 and a bottom inner panel 15 inside. A side inner panel 10 is provided at the inner end face between the top inner panel 13 and the bottom inner panel 15. The top inner panel 13, the side inner panel 10, and the bottom inner panel 15 are integrated with the rear box 2.

[0027] Example 2: Figures 1 to 5 As shown, a high-strength trolley case has an internal support plate 14 embedded in a groove machined in the rear case 2 and the front case 4, along the length and shape of the groove. The longitudinal section of the internal support plate 14 is a U-shaped hollow structure. Several through holes are machined on the end face of the internal support plate 14 away from the interior of the rear case 2 and the front case 4. Guide limiting sleeves 17 are provided at the corresponding positions of the through holes, and the guide limiting sleeves 17 are located inside the internal support plate 14.

[0028] A movable top rod 16 is slidably disposed inside the guide limiting sleeve 17. The tail end of the movable top rod 16 is provided with a bottom limiting end composed of an annular block, and a return spring 19 is provided on the upper part of the bottom limiting end. An elastic limiting block 18 is provided at the bottom position of the bottom limiting end. The elastic limiting block 18 is a rubber block and is fixed inside the support plate 14 inside the box. The return spring 19 is limited between the bottom limiting end of the movable top rod 16 and the support plate 14 inside the box.

[0029] The top of the movable top rod 16 is connected to a movable plate 6, which is a multi-segment plate, namely a straight plate on the end face of the rear box 2 and the front box 4, a transition plate located at the rounded transition part of the corner of the rear box 2 and the front box 4, and a side plate located on the side of the rear box 2 and the front box 4.

[0030] The structure and connection relationships of the remaining parts are the same as those described in Embodiment 1. Those skilled in the art can fully understand the technical solutions described in this embodiment based on the above embodiments.

[0031] Example 3: As Figures 1 to 5 As shown, a high-strength trolley case includes several shock-absorbing blocks machined on the inner end faces of the front bottom inner panel 11, the front top inner panel 12, the rear top inner panel 13, and the rear bottom inner panel 15. These shock-absorbing blocks are sponge pads filled with blind holes in the front bottom inner panel 11, the front top inner panel 12, the rear top inner panel 13, and the rear bottom inner panel 15. The connecting part 3 includes a protective plate located at the contact area between the rear body 2 and the front body 4, with a zipper structure and a combination lock device connected to the protective plate. The combination lock device is located on the top end face of the rear body 2 and can be locked to the connecting part 3 at the top end face of the front body 4. The combination lock device is selected by those skilled in the art from commonly used locking devices in existing trolley cases.

[0032] The structure and connection relationships of the remaining parts are the same as those described in Embodiment 1. Those skilled in the art can fully understand the technical solutions described in this embodiment based on the above embodiments.

[0033] Based on the above embodiments, the following paragraphs will continue to describe in detail the technical features involved and the functions and roles of these technical features in this technical solution, so as to help those skilled in the art to fully understand the technical solution and reproduce it.

[0034] In this application, the rear compartment 2 and the front compartment 4 constitute a space for accommodating items. Both are equipped with paired casters 7 at their bottoms, which support and allow movement of the rear compartment 2 and the front compartment 4. The rear compartment 2 has an integrally formed pull rod storage section 8 on its back. A pull rod 1, which is a telescopic rod, is installed within the pull rod storage section 8 and can be pulled out from it. The above structure can be the same as existing suitcase structures, provided that it can be implemented by those skilled in the art under the existing technology.

[0035] In the application, the rear box body 2 is provided with a plurality of grooves arranged along the outer shell, the two ends of the grooves are connected with the pull rod storage part 8 and the connecting part 3 respectively, and the box body inner rib 20 is integrally arranged at the inner wall of the rear box body 2 corresponding to the grooves, and the box body inner rib 20 protrudes into the interior of the rear box body 2 to ensure the strength of the position where the groove is processed.

[0036] In the application, the front box body 4 is provided with a plurality of grooves arranged along the outer shell at the outer shell, the two ends of the grooves are connected with the connecting part 3 at the corresponding position, and the box body inner rib 20 is integrally arranged at the inner wall of the front box body 4 corresponding to the grooves, and the box body inner rib 20 protrudes into the interior of the front box body 4.

[0037] In the application, the rear box body 2 and the front box body 4 are provided with an additional reinforcing part 5 at the position corresponding to the groove, and the additional reinforcing part 5 is located at the upper edge and the lower edge of the groove and is integrated with the rear box body 2 and the front box body 4 respectively.

[0038] The additional reinforcing part 5 and the groove constitute the movement and limiting space of the movable plate 6, the movable plate 6 is connected with the movable ejector rod 16, the movable ejector rod 16 moves in the box body inner support plate 14, and the box body inner support plate 14 is embedded in the groove. The box body inner support plate 14 can support the groove in the rear box body 2 and the front box body 4 and strengthen the strength, when being subjected to extrusion or impact, the strength of the whole box body is strengthened due to the existence of the box body inner support plate 14, and the grooves of the rear box body 2 and the front box body 4 are correspondingly arranged, so that after the rear box body 2 and the front box body 4 are connected through the connecting part 3, the force can be uniformly distributed through the groove, the box body inner rib 20 and the box body inner support plate 14.

[0039] In the application, the movable ejector rod 16 can move in the guide limiting sleeve 17 and can realize reciprocating movement under the action of the reset spring 19 connected with the bottom limiting end and the elastic limiting block 18. Specifically, when the movable plate 6 is subjected to external impact, the movable plate 6 can drive the movable ejector rod 16 to move into the guide limiting sleeve 17 and extrude the elastic limiting block 18 to make it elastically deform, and the reset spring 19 is stretched. In the process of resetting the movable ejector rod 16, the above structure can realize stable resetting of the movable ejector rod 16 through the elastic resetting of itself. Moreover, the above structure does not damage the groove, the rear box body 2 and the front box body 4 due to the existence of the box body inner support plate 14.

[0040] In the application, the movable plate 6 is a multi-section structure, that is, the plate body of a corresponding shape can be arranged at the end face, the corner transition position and the side position of the rear box body 2 and the front box body 4 to realize the moving of different positions subjected to impact.

[0041] In the present application, in order to further enhance the strength of the rear box 2, the front box 4, the inner wall of the rear box 2 is integrally provided with a rear box top inner plate 13, a rear box side inner plate 10, and a rear box bottom inner plate 15. The rear box top inner plate 13, the rear box side inner plate 10, and the rear box bottom inner plate 15 are provided with high-strength fiber cloth at the end face combined with the rear box 2, so as to enhance the overall tensile strength and toughness of the rear box 2. The rear box top inner plate 13 and the rear box bottom inner plate 15 are also provided with shock-absorbing blocks 21 embedded in the corresponding blind holes.

[0042] The inner wall of the front box 4 is integrally provided with a front box top inner plate 12, a front box side inner plate 9, and a front box bottom inner plate 11. The front box top inner plate 12, the front box side inner plate 9, and the front box bottom inner plate 11 are provided with high-strength fiber cloth at the end face combined with the front box 4, so as to enhance the overall tensile strength and toughness of the front box 4. The front box top inner plate 12 and the front box bottom inner plate 11 are also provided with shock-absorbing blocks 21 embedded in the corresponding blind holes of the rear box top inner plate 13 and the rear box bottom inner plate 15. The shock-absorbing blocks 21 are sponge pads or rubber pads.

[0043] Finally, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. The description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-strength trolley case, comprising a pull rod (1), wherein the pull rod (1) is housed in a pull rod storage section (8), the pull rod storage section (8) is integrally connected to a rear case body (2), the rear case body (2) is connected to a front case body (4) via a connecting section (3), the front case body (4), the connecting section (3), and the rear case body (2) constitute a storage space for accommodating items, and rollers (7) are provided at the bottom of the rear case body (2) and the front case body (4), characterized in that: The outer shell of the rear box body (2) and the front box body (4) is respectively provided with a plurality of grooves arranged along the shell, and the positions corresponding to the grooves in the rear box body (2) and the front box body (4) are provided with box body inner ribs (20), and the edge positions of the grooves are provided with outer reinforcing parts (5) corresponding to the grooves, and the outer reinforcing parts (5) are arranged protruding from the shell; the space formed by the outer reinforcing parts (5) and the grooves is provided with a movable plate (6) moving relatively; the front box body (4) is provided with a front box body side inner plate (9), a front box body top inner plate (12) and a front box body bottom inner plate (11) on the inner wall, the rear box body (2) is provided with a rear box body top inner plate (13), a rear box body side inner plate (10) and a rear box body bottom inner plate (15) on the inner wall, and the front box body side inner plate (9), the front box body top inner plate (12) and the front box body bottom inner plate (11) are combined on the front box body (4), and the rear box body top inner plate (13), the rear box body side inner plate (10) and the rear box body bottom inner plate (15) are combined on the rear box body (2).

2. The high-strength trolley case of claim 1, wherein: The rear box body (2) and the front box body (4) are provided with box body inner supporting plates (14) matched with the grooves in the grooves, the longitudinal section of the box body inner supporting plate (14) is U-shaped, the box body inner supporting plate (14) is provided with a through hole communicating with the internal space in the direction towards the outside of the rear box body (2) and the front box body (4), a moving jack (16) is slidably arranged in the through hole, one end of the moving jack (16) is connected with the movable plate (6), the other end of the moving jack (16) is connected with an elastic limiting block (18) and a reset spring (19), the elastic limiting block (18) and the reset spring (19) are located in a guide limiting sleeve (17), and the elastic limiting block (18) and the reset spring (19) are arranged on the two sides of the bottom limiting end of the moving jack (16).

3. A high strength trolley case according to claim 2, characterized in that: The bottom limiting end of the moving jack (16) is a ring-shaped block, and the circumferential outer wall of the ring-shaped block is slidably arranged on the inner wall of the guide limiting sleeve (17).

4. The high strength trolley case of claim 2, wherein: The inner end faces of the front box body bottom inner plate (11), the front box body top inner plate (12), the rear box body top inner plate (13) and the rear box body bottom inner plate (15) are processed with a plurality of shock-absorbing blocks (21), and the shock-absorbing blocks (21) are sponge pad bodies filled in the blind holes of the front box body bottom inner plate (11), the front box body top inner plate (12), the rear box body top inner plate (13) and the rear box body bottom inner plate (15).

5. A high strength trolley case according to claim 4, characterized in that: The movable plate (6) is a multi-section structure, including a straight line plate body located at the end face of the rear box body (2) and the front box body (4), a transition plate body located at the smooth transition part of the corner of the rear box body (2) and the front box body (4), and a side plate body located at the side face of the rear box body (2) and the front box body (4).

6. A high strength trolley case according to any one of claims 1 to 5, characterized in that: The connecting part (3) includes a guard plate located at the contact part of the rear box body (2) and the front box body (4), and the guard plate is respectively connected with a zipper structure and a password locking device.

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