Pressure-resistant shell structure of draw-bar box
By setting reinforcement strips and annular reinforcement strips on the inner and outer layers of the trolley case, the problem of insufficient compressive resistance of the existing trolley case is solved, which improves compressive resistance and aesthetics, and extends the service life.
Patent Information
- Application Number
- CN202420894159.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The existing trolley boxes have low compressive strength and are prone to deformation after being subjected to greater pressure, resulting in a reduced service life.
By setting the inner layer and the outer layer, and under the action of reinforcement strips and annular reinforcement strips on the outer layer, the deformation resistance of the inner layer is increased, thereby avoiding deformation of the outer layer after being subjected to pressure and increasing the strength of the outer layer.
It improves the compressive resistance and service life of the trolley case, while increasing the aesthetics of the outer layer.
Smart Images
Figure CN222639926U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of trolley cases, in particular to a pressure-resistant shell structure of a trolley case. Background Art
[0002] A trolley case refers to a suitcase with a trolley and wheels. It is widely used because of its convenience. At the same time, trolley cases are also divided into single-tube trolleys and double-tube trolleys because of the trolley on the case. The tube of the trolley is also divided into square tubes and round tubes, which is convenient for dragging while walking and greatly reduces the burden. Trolley cases can be carried by hand or dragged. The wheels of the trolley cases we usually use are basically located at the bottom of the case, but modern people have designed a new form of trolley case, which is designed into a cylindrical shape with the wheels completely wrapped on the outside of the case. This roller design allows this trolley case to better adapt to different terrains, such as you can easily go up and down stairs by directly pulling the case.
[0003] Most of the existing suitcases adopt a single-layer design, so their compressive strength is low when in use. When the suitcase is subjected to a large pressure, it is easy to deform and be damaged, which reduces the service life of the suitcase. Therefore, we propose a pressure-resistant shell structure for the suitcase. Utility Model Content
[0004] 1. Technical issues to be solved
[0005] In view of the deficiencies in the prior art, the utility model provides a pressure-resistant shell structure for a trolley case, which has the advantages of arranging an inner layer and an outer layer to configure the trolley case into an inner and outer layer, and increasing the anti-deformation effect of the inner layer when in use under the action of an outer reinforcement strip and an annular reinforcement strip, thereby preventing the outer layer from deforming after being subjected to pressure, increasing the strength of the outer layer when in use, and increasing the pressure resistance of the trolley case when in use. At the same time, the surface of the outer layer is configured as a smooth surface, thereby increasing the aesthetics of the trolley case, and solving the problem that the trolley case is easily deformed after being subjected to greater pressure, causing the trolley case to be easily damaged, thereby reducing the service life of the trolley case.
[0006] (II) Technical solution
[0007] In order to achieve the above purpose, by setting the inner layer and the outer layer, the trolley case is set as an inner and outer layer, and under the action of the outer reinforcement strip and the annular reinforcement strip, the anti-deformation effect of the inner layer when in use is increased, so that the outer layer can be prevented from being deformed after being subjected to pressure, and the strength of the outer layer when in use is increased, so that the compression resistance of the trolley case is increased when the trolley case is in use, and at the same time, the surface of the outer layer is set as a smooth surface to increase the aesthetics of the trolley case when in use, the utility model provides the following technical solutions:
[0008] A pressure-resistant shell structure of a trolley case includes a case cover and a case bottom, wherein the case cover and the case bottom both include:
[0009] A box assembly, the box assembly comprising an inner layer, and an outer layer is arranged on the surface of the inner layer;
[0010] The pressure-resistant component includes a plurality of external reinforcement strips, the surface of the external reinforcement strips is sleeved with two annular reinforcement strips, the inner wall of the outer layer is provided with a card slot matching the external reinforcement strips and the annular reinforcement strips, and the trolley case is configured as an inner and outer layer by arranging the inner layer and the outer layer. Under the action of the external reinforcement strips and the annular reinforcement strips, the deformation resistance of the inner layer during use is increased, thereby preventing the outer layer from being deformed after being subjected to pressure, and increasing the strength of the outer layer during use, so that the compression resistance of the trolley case is increased when the trolley case is in use, and at the same time, the surface of the outer layer is configured as a smooth surface, thereby increasing the aesthetics of the trolley case.
[0011] As a preferred technical solution of the utility model, the inner walls of the multiple external reinforcement strips are fixedly connected to the bottom and the front and back surfaces of the inner layer, the inner walls of the two annular reinforcement strips are fixedly connected to the surrounding of the inner layer, and the surfaces of the external reinforcement strips and the annular reinforcement strips are fixedly connected to the inner walls of the slots. By arranging the external reinforcement strips and the annular reinforcement strips, the use strength of the inner layer is increased.
[0012] As a preferred technical solution of the utility model, a reinforcement component is arranged inside the inner layer, and the reinforcement component includes a plurality of inner reinforcement strips, and the left and right sides of the inner walls of the plurality of inner reinforcement strips are fixedly connected with reinforcement side strips, and the opposite ends of the two reinforcement side strips are commonly fixedly connected with a cross reinforcement bottom strip. By arranging the inner reinforcement strips, reinforcement side strips and cross reinforcement bottom strips, the inner wall of the inner layer is supported, thereby increasing the supporting strength of the inner wall of the inner layer.
[0013] As a preferred technical solution of the utility model, the surfaces of the multiple inner reinforcement strips are fixedly connected to the inner wall of the inner layer, the front and rear ends of the reinforcement side strips are fixedly connected to the front and rear sides of the inner wall of the inner layer, and the opposite side of the cross reinforcement bottom strip is fixedly connected to the front and rear sides of the inner wall of the inner layer. By arranging the reinforcement side strips, the corners of the inner layer are supported to avoid deformation of the corners of the inner layer. At the same time, under the action of the cross reinforcement bottom strips, the front and rear sides of the inner wall of the inner layer are supported.
[0014] As a preferred technical solution of the utility model, the materials of the outer reinforcement strips, annular reinforcement strips, inner reinforcement strips, reinforcement side strips and cross reinforcement bottom strips are all ultra-high molecular weight polyethylene, and the materials of the inner layer and the outer layer are polyethylene. By setting the materials of the outer reinforcement strips, annular reinforcement strips, inner reinforcement strips, reinforcement side strips and cross reinforcement bottom strips to ultra-high molecular weight polyethylene, the strength of the outer reinforcement strips, annular reinforcement strips, inner reinforcement strips, reinforcement side strips and cross reinforcement bottom strips during use is increased, the anti-deformation and anti-aging effects of the outer reinforcement strips, annular reinforcement strips, inner reinforcement strips, reinforcement side strips and cross reinforcement bottom strips are increased, and the overall strength of the trolley case is increased.
[0015] As a preferred technical solution of the utility model, the lower side of the box cover and the upper side of the box bottom are fixedly connected with a reinforcement frame, and the edge deformation of the box cover and the box bottom is avoided under the action of the reinforcement frame.
[0016] As an optimal technical solution of the utility model, the box cover and the box bottom are both made by a new method of one-time molding of multi-layer co-extrusion hollow blow molding box shells. The new method of one-time molding of multi-layer co-extrusion hollow blow molding box shells has the advantages of higher efficiency, lower production cost and better quality.
[0017] (III) Beneficial effects
[0018] Compared with the prior art, the utility model provides a trolley case pressure-resistant shell structure, which has the following beneficial effects:
[0019] 1. The trolley case is configured with an inner layer and an outer layer, and the inner and outer layers are configured. Under the action of the outer reinforcement strip and the annular reinforcement strip, the deformation resistance of the inner layer during use is increased, thereby preventing the outer layer from being deformed after being subjected to pressure, and increasing the strength of the outer layer during use, so that the compression resistance of the trolley case is increased when the trolley case is in use. At the same time, the surface of the outer layer is configured as a smooth surface, which increases the aesthetics of the trolley case.
[0020] 2. The trolley case increases the strength of the outer reinforcement strips, annular reinforcement strips, inner reinforcement strips, reinforcement side strips and cross reinforcement bottom strips when in use by setting the material of the outer reinforcement strips, annular reinforcement strips, inner reinforcement strips, reinforcement side strips and cross reinforcement bottom strips to ultra-high molecular weight polyethylene, increases the anti-deformation and anti-aging effects of the outer reinforcement strips, annular reinforcement strips, inner reinforcement strips, reinforcement side strips and cross reinforcement bottom strips, and increases the overall strength of the trolley case. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.
[0022] Figure 2 It is a three-dimensional structural schematic diagram of the box assembly of the utility model.
[0023] Figure 3 It is a schematic diagram of the outer three-dimensional structure of the utility model.
[0024] Figure 4 It is a schematic diagram of the explosion structure of the box assembly of the utility model.
[0025] In the figure: 1. box cover; 2. box bottom; 3. box body assembly; 31. inner layer; 32. outer layer; 4. pressure-resistant assembly; 41. outer reinforcement strip; 42. annular reinforcement strip; 43. slot; 5. reinforcement assembly; 51. inner reinforcement strip; 52. reinforcement side strip; 53. cross reinforcement bottom strip; 6. reinforcement frame. DETAILED DESCRIPTION
[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0027] Example 1
[0028] Reference Figure 1-4 , which is the first embodiment of the utility model, provides a trolley case pressure-resistant shell structure, including a case cover 1 and a case bottom 2, the case bottom 2 is arranged below the case cover 1, the right side of the case cover 1 and the right side of the case bottom 2 are rotatably connected together by a hinge, the left side of the case cover 1 and the left side of the case bottom 2 are fixedly connected with two lock bodies, the front of the case bottom 2 is fixedly connected with a handle, the back of the case cover 1 and the back of the case bottom 2 are fixedly connected with universal wheels, and the case cover 1 and the case bottom 2 both include:
[0029] The box assembly 3 includes an inner layer 31, an outer layer 32 is provided on the surface of the inner layer 31, and the outer layer 32 is blow-molded on the surface of the inner layer 31;
[0030] The pressure-resistant component 4 includes a plurality of external reinforcement strips 41, which are arranged below and on the front and rear sides of the inner layer 31. The inner wall of the external reinforcement strip 41 is arranged to have the same shape as the right side cross-section of the inner layer 31. Two annular reinforcement strips 42 are sleeved on the surface of the external reinforcement strip 41. The annular reinforcement strips 42 are arranged around the inner layer 31. The inner wall of the outer layer 32 is provided with a card groove 43 matching the external reinforcement strip 41 and the annular reinforcement strip 42.
[0031] The inner walls of the multiple external reinforcement strips 41 are fixedly connected to the bottom and front and back surfaces of the inner layer 31, the inner walls of the two annular reinforcement strips 42 are fixedly connected to the surrounding of the inner layer 31, the surfaces of the external reinforcement strips 41 and the surfaces of the annular reinforcement strips 42 are fixedly connected to the inner walls of the slots 43, and the external reinforcement strips 41 and the annular reinforcement strips 42 are integrally formed with the inner layer 31.
[0032] A reinforcement component 5 is provided inside the inner layer 31, and the reinforcement component 5 includes a plurality of inner reinforcement strips 51, which are provided inside the inner layer 31, and the surface of the inner reinforcement strips 51 is the same as the left and right sides and the bottom side of the inner wall of the inner layer 31, and the left and right sides of the inner wall of the plurality of inner reinforcement strips 51 are fixedly connected with reinforcement side strips 52, and the two reinforcement side strips 52 are distributed at the corners of the inner wall of the inner reinforcement strips 51, and the opposite ends of the two reinforcement side strips 52 are commonly fixedly connected with a cross reinforcement bottom strip 53, and the two cross reinforcement bottom strips 53 are distributed on the front and back sides of the inner wall of the inner layer 31.
[0033] The surfaces of the multiple inner reinforcement strips 51 are fixedly connected to the inner wall of the inner layer 31, the front and rear ends of the reinforcement side strips 52 are fixedly connected to the front and rear sides of the inner wall of the inner layer 31, and the opposite side of the cross reinforcement bottom strip 53 is fixedly connected to the front and rear sides of the inner wall of the inner layer 31.
[0034] During use, when using the trolley case, the case cover 1 and the case bottom 2 are opened, and the items to be stored are placed in the case cover 1 and the case bottom 2;
[0035] The inner layer 31 in the box cover 1 and the box bottom 2 increases the use strength of the surface of the inner layer 31 under the action of the outer reinforcement strip 41 and the annular reinforcement strip 42, and avoids deformation of the surface of the inner layer 31. At the same time, the surface of the outer layer 32 is set to be smooth to increase the aesthetics of the surface of the outer layer 32. The outer layer 32 limits the outer reinforcement strip 41 and the annular reinforcement strip 42 through the card groove 43. The outer layer 32 protects the surface of the inner layer 31. The inner reinforcement strip 51 supports the inside of the inner layer 31 to increase the use strength of the inner wall of the inner layer 31. The reinforcement side strip 52 increases the support strength on both sides of the inner wall of the inner layer 31. The cross reinforcement bottom strip 53 increases the use strength of the rear and front sides of the inner wall of the inner layer 31 to avoid deformation of the inner layer 31.
[0036] When processing the suitcase, the reinforcing side strips 52 and the cross reinforcing bottom strips 53 are first processed and formed, and then the inner reinforcing strips 51 are processed on the surface of the reinforcing side strips 52, and then the inner layer 31 is processed on the surface of the inner reinforcing strips 51, and the outer reinforcing strips 41 and the annular reinforcing strips 42 are processed together on the surface of the inner layer 31, and finally the outer layer 32 is processed on the surface of the inner layer 31.
[0037] Example 2
[0038] Reference Figure 1-4 , which is the second embodiment of the utility model, the materials of the outer reinforcement strip 41, the annular reinforcement strip 42, the inner reinforcement strip 51, the reinforcement side strip 52 and the cross reinforcement bottom strip 53 are all ultra-high molecular weight polyethylene, and the material of the inner layer 31 and the outer layer 32 is polyethylene.
[0039] The bottom of the box cover 1 and the top of the box bottom 2 are both fixedly connected with a reinforcement frame 6, and the material of the reinforcement frame 6 is stainless steel.
[0040] The box cover 1 and the box bottom 2 are both made by a new method of one-step molding of a multi-layer co-extrusion hollow blow molding box shell, which has the advantages of higher efficiency, lower production cost, and better quality.
[0041] During use, the outer reinforcement strip 41, the annular reinforcement strip 42, the inner reinforcement strip 51, the reinforcement side strip 52 and the cross reinforcement bottom strip 53 are made of ultra-high molecular weight polyethylene, which makes the trolley case more wear-resistant, impact-resistant, aging-resistant and crack-resistant when in use, thereby increasing the service life of the trolley case. The inner layer 31 and the outer layer 32 are made of polyethylene to increase the wear resistance of the surface of the outer layer 32. Under the action of the reinforced frame 6, the strength of the edges of the box cover 1 and the box bottom 2 is increased to avoid deformation of the edges of the box cover 1 and the box bottom 2.
[0042] The remaining structures are the same as those of Example 1.
[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A pressure-resistant housing structure of a trolley case, comprising a case cover (1) and a case bottom (2), characterized in that: The box cover (1) and the box bottom (2) both include: A box assembly (3), the box assembly (3) comprising an inner layer (31), the surface of the inner layer (31) being provided with an outer layer (32); The pressure-resistant component (4) comprises a plurality of external reinforcement strips (41), two annular reinforcement strips (42) are sleeved on the surface of the external reinforcement strips (41), and the inner wall of the outer layer (32) is provided with a slot (43) matching the external reinforcement strips (41) and the annular reinforcement strips (42).
2. The pressure-resistant shell structure of a suitcase according to claim 1, characterized in that: The inner walls of the plurality of external reinforcement strips (41) are fixedly connected to the bottom and front and rear surfaces of the inner layer (31), the inner walls of the two annular reinforcement strips (42) are fixedly connected to the periphery of the inner layer (31), and the surfaces of the external reinforcement strips (41) and the annular reinforcement strips (42) are fixedly connected to the inner wall of the slot (43).
3. The pressure-resistant shell structure of a suitcase according to claim 2, characterized in that: A reinforcement component (5) is arranged inside the inner layer (31), and the reinforcement component (5) comprises a plurality of inner reinforcement strips (51), and the left and right sides of the inner walls of the plurality of inner reinforcement strips (51) are fixedly connected with reinforcement side strips (52), and the opposite ends of the two reinforcement side strips (52) are commonly fixedly connected with a cross reinforcement bottom strip (53).
4. The pressure-resistant shell structure of a suitcase according to claim 3, characterized in that: The surfaces of the plurality of inner reinforcement strips (51) are fixedly connected to the inner wall of the inner layer (31), the front and rear ends of the reinforcement side strips (52) are fixedly connected to the front and rear sides of the inner wall of the inner layer (31), and the opposite side of the cross reinforcement bottom strip (53) is fixedly connected to the front and rear sides of the inner wall of the inner layer (31).
5. The pressure-resistant shell structure of a suitcase according to claim 4, characterized in that: The materials of the outer reinforcement strip (41), the annular reinforcement strip (42), the inner reinforcement strip (51), the reinforcement side strip (52) and the cross reinforcement bottom strip (53) are all ultra-high molecular weight polyethylene, and the materials of the inner layer (31) and the outer layer (32) are polyethylene.
6. The pressure-resistant shell structure of a suitcase according to claim 5, characterized in that: The lower side of the box cover (1) and the upper side of the box bottom (2) are both fixedly connected with a reinforcement frame (6).
7. The pressure-resistant shell structure of a suitcase according to claim 6, characterized in that: The box cover (1) and the box bottom (2) are both made by adopting a new type of manufacturing method of multi-layer co-extrusion hollow blow molding box shell one-time molding.