Wheel set structure for electric draw-bar box and electric draw-bar box

Abstract

The utility model relates to the technical field of electric draw-bar boxes, in particular to a wheel set structure for an electric draw-bar box, which comprises a balance wheel set mounted at the bottom of a box body and an auxiliary wheel set mounted at the lower end of a handle component, the driving wheel piece is located between the balance wheel set and the auxiliary wheel set. By adopting the design of the balance wheel set, the auxiliary wheel set and the power wheel, the whole luggage case is balanced by five wheels, the balance effect is good, a user has better stability when the user sits on the luggage case to move, and the adjusting pieces are designed among the balance wheel set, the auxiliary wheel set and the case body, so that the balance effect is better. The heights of all the wheel sets are adjusted and matched through the adjusting pieces, so that the bottoms of all the wheels are located on the same plane, the stability of supporting movement is guaranteed, in addition, the auxiliary wheel sets are connected to the handle assembly and can rotate along with the handle assembly, and steering in the movement process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric suitcases, in particular to a wheel set structure for an electric suitcase and an electric suitcase. Background Art

[0002] With the increasing demand for travel and outings, suitcases have become an essential item in people's daily lives. Conventional non-electric suitcases usually adopt a design with four universal wheels, two in the front and two in the back, which makes the suitcase more flexible and stable when moving. However, with the development of technology, electric suitcases have gradually become the new favorite in the market. The design of electric suitcases adds a power system on the basis of traditional suitcases, enabling users to carry heavy objects more easily.

[0003] Although electric suitcases provide convenience for users, there are some problems in the existing designs of electric suitcases. The existing designs of electric suitcases are mainly divided into two types: one is a design with one driving wheel in the front and two sliding wheels in the back, specifically, a foldable rideable suitcase disclosed in Chinese Patent Publication No. "CN211559036U"; the other is a design with two driving wheels in the front and two sliding wheels in the back.

[0004] However, no matter which design it is, when the user is moving forward while sitting on the electric suitcase, due to the unidirectional nature of the driving wheels, the uneven distribution of the weight of the items in the suitcase, and the uneven distribution of the user's own weight, the suitcase may become unbalanced during the moving process, especially when turning, increasing the risk of the user falling. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the drawbacks in the existing technology, such as the unidirectional nature of the driving wheels, the uneven distribution of the weight of the items in the suitcase, the imbalance when turning, and the increased risk of the user falling, and to propose a wheel set structure for an electric suitcase and an electric suitcase.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design a wheel set structure for an electric suitcase, including a balance wheel set installed at the bottom of the box body and an auxiliary wheel set installed at the lower end of the handle assembly. An active wheel member is also provided at the bottom of the box body, and the active wheel member is located between the balance wheel set and the auxiliary wheel set;

[0008] Wherein, the active wheel member includes a wheel frame installed below the box body. A driving wheel is provided inside the wheel frame. A fixing structure is provided between the driving wheel and the wheel frame. The balance wheel set and the auxiliary wheel set are kept horizontal with the bottom edge of the driving wheel through an adjusting member.

[0009] Further, a U-shaped opening is formed at the bottom of the wheel carrier, and the power wheel shaft rod is placed in the U-shaped opening and extends outward.

[0010] Further, the fixing structure includes a locking ring sleeved on the power wheel shaft rod. A clamping portion is formed by bending the top of the locking ring. A clamping opening is formed on the end face of the wheel carrier, and the clamping portion is clamped in the clamping opening. A locking member that is threadedly connected to and abuts against the locking ring is provided on the shaft rod of the power wheel.

[0011] Further, a bent portion is further bent at the bottom of the locking ring. The bent portion is placed inside the U-shaped opening, and outwardly extending outer expanding edges that contact the inner side of the U-shaped opening are provided on both sides of the bent portion.

[0012] Further, the top of the balance wheel set is connected to the box body through an adjusting member and a fastening member, and the top of the auxiliary wheel set is connected to the handle assembly through an adjusting member and a fastening member.

[0013] Further, the adjusting member includes a gasket. A weight-reducing hole is formed through the upper and lower end faces of the gasket. Arc-shaped openings are communicated with the four corners of the weight-reducing hole, and the arc-shaped openings are used for the fastening member to pass through.

[0014] In addition, an electric trolley case is also proposed in the present utility model, which includes the above-mentioned wheel set structure.

[0015] The wheel set structure and the electric trolley case for an electric trolley case proposed by the present utility model have the beneficial effects that: in the present utility model, by adopting the design of a balance wheel set, an auxiliary wheel set and a power wheel, the whole luggage is balanced by five wheels, and the balance effect is good. The user has better stability when moving while sitting on the box. Secondly, adjusting members are designed between the balance wheel set, the auxiliary wheel set and the box body, and the heights of the respective wheel sets are adjusted and adapted through the adjusting members so that the bottoms of all wheels are on the same plane, ensuring the stability of the support and movement. In addition, the auxiliary wheel set is connected to the handle assembly and can rotate along with the handle assembly to achieve steering during the movement process. The overall design is simple, greatly improving the stability and safety of the use of the trolley case. Description of the Drawings

[0016] Figure 1 is a perspective view of the present utility model;

[0017] Figure 2 is a schematic structural view of the adjusting member of the present utility model;

[0018] Figure 3 is a schematic structural view of the driving wheel member of the present utility model;

[0019] Figure 4This is a schematic structural diagram of the locking ring of the present utility model.

[0020] In the figure: 1, box body; 11, handle assembly; 2, balance wheel set; 3, auxiliary wheel set; 4, driving wheel member; 411, U-shaped opening; 41, wheel frame; 42, driving wheel; 43, locking ring; 44, clamping portion; 45, bayonet; 46, locking member; 47, bending portion; 48, outward expanding edge; 5, adjusting member; 51, gasket; 52, weight-reducing hole; 53, arc-shaped opening. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Referring to Figures 1-4 In an embodiment of the present utility model, specifically, it discloses a wheel set structure for an electric trolley case, including a balance wheel set 2 installed at the bottom of the box body 1 and an auxiliary wheel set 3 installed at the lower end of the handle assembly 11. Of course, the handle assembly 11 is rotatably connected to the end of the telescopic assembly inside the box body 1. Therefore, in this embodiment, the auxiliary wheel set 3 described can rotate and adjust the direction along with the handle assembly 11. Specifically, in this embodiment, both the balance wheel set 2 and the auxiliary wheel set 3 include two wheel members to form a supporting effect of four wheel members;

[0023] A driving wheel member 4 is further provided at the bottom of the box body 1. The driving wheel member 4 is located between the balance wheel set 2 and the auxiliary wheel set 3. The driving wheel member 4 is used to provide power for the movement of the entire box body 1. In this way, the entire suitcase is balanced by five wheels, and the balance effect is good. Users have better stability when sitting on the box and moving.

[0024] Among them, the driving wheel member 4 includes a wheel frame 41 installed below the box body 1. A driving wheel 42 is provided inside the wheel frame 41. Preferably, in this embodiment, the driving wheel 42 described adopts a hub motor wheel for driving the electric trolley case to move. Its shaft end is circumferentially locked to the wheel frame 41 to ensure the stable rotation drive of the outer ring. A fixing structure is provided between the driving wheel 42 and the wheel frame 41. The balance wheel set 2 and the auxiliary wheel set 3 are kept horizontal with the bottom edge of the driving wheel 42 through an adjusting member 5.

[0025] In some embodiments, a U-shaped opening 411 is opened at the bottom of the wheel frame 41 of the present utility model. The shaft rod of the driving wheel 42 is placed in the U-shaped opening 411 and extends outward.

[0026] Based on the above embodiments, in the present utility model, the fixing structure includes a locking ring 43 sleeved on the shaft of the driving wheel 42. The locking ring 43 has an inner hole, and the shape of the inner hole is adapted to the shape of the end of the shaft. A clamping portion 44 is formed by bending the top of the locking ring 43. A clamping opening 45 is provided on the end face of the wheel frame 41, and the clamping portion 44 is clamped in the clamping opening 45. A locking member 46 is threadedly connected to and abuts against the locking ring 43 on the shaft of the driving wheel 42.

[0027] Preferably, in this embodiment, the locking member 46 is provided as a nut. Of course, in order to prevent the nut from loosening, a spring washer can also be added between the nut and the locking ring 43. This means is a conventional means for those skilled in the art and will not be elaborated here. Secondly, it should be noted that a washer is provided between the locking member 46 and the outer side surface of the wheel frame 41 in this embodiment. In this embodiment, an arc angle is provided at the bending portion of the clamping portion 44 and the locking ring 43. Therefore, through the design of the washer, it is used to adapt to the outer arc angle of the clamping portion 44.

[0028] During specific installation, first, a washer is sleeved on the shaft, and then the above-mentioned locking ring 43 is passed through. The clamping portion 44 on the locking ring 43 is inserted into the clamping opening 45, and then the locking ring 43 is locked and fixed by the locking member 46. Through the design of the locking ring 43, the connection stability between the driving wheel 42 and the wheel frame 41 can be ensured, and the problem of the shaft falling off from the inside of the U-shaped opening 411 can be avoided.

[0029] Based on the above embodiments, in the present utility model, a bending portion 47 is further bent at the bottom of the locking ring 43. The bending portion 47 is placed inside the U-shaped opening 411. Outer expansion edges 48 that contact the inner side of the U-shaped opening 411 extend outward from both sides of the bending portion 47. Through the design of the bending portion 47 and the outer expansion edges 48, the circumferential locking ability between the locking ring 43 and the U-shaped opening 411 can be enhanced, thereby further improving the stable support for the shaft.

[0030] It should be noted that in this embodiment, the top of the balance wheel group 2 is connected to the box body 1 through an adjusting member 5 and a fastener, and the top of the auxiliary wheel group 3 is connected to the handle assembly 11 through an adjusting member 5 and a fastener.

[0031] Preferably, in this embodiment, the adjusting member 5 includes washers 51. Among them, the thicknesses of the two washers 51 on both sides are inconsistent. Through the design of the two washers 51, it is used to ensure that the bottom of the wheel edges of the balance wheel group 2 and the auxiliary wheel group 3 are level with the bottom of the driving wheel 42, so as to improve the stability of the movement of this suitcase;

[0032] In addition, in this embodiment, the gasket 51 is provided with weight-reducing holes 52 penetrating through the upper and lower end faces. Four corners of the weight-reducing holes 52 are each communicated with an arc-shaped opening 53 for the fastener to pass through. That is to say, in the present utility model, by providing the weight-reducing holes 52, while ensuring the height adjustment of the balance wheel set 2 and the auxiliary wheel set 3, the overall weight can be reduced to avoid excessive energy loss. In addition, the locking member in this embodiment is also set as a bolt, and the arc-shaped opening 53 provided inside the weight-reducing hole 52 is used for guiding the penetration of the bolt, so as to ensure the limit support of the gasket 51 when the bolt is connected and fixed to the box body 1.

[0033] In addition, in the present utility model, an electric trolley case is also proposed. Specifically, the electric trolley case includes the above-mentioned wheel set structure.

[0034] In summary, in the present utility model, by adopting the design of the balance wheel set 2, the auxiliary wheel set 3 and a driving wheel 42, the whole luggage case is balanced by five wheels, and the balance effect is good. When the user sits on the case and moves, there is better stability. Secondly, adjusting members 5 are designed between the balance wheel set 2, the auxiliary wheel set 3 and the box body 1 to adjust and adapt the height of each wheel set through the adjusting members 5, so that the bottoms of all wheels are on the same plane, ensuring the stability of the support and movement. In addition, the auxiliary wheel set 3 is connected to the handle assembly 11 and can rotate with the handle assembly 11 to achieve steering during the movement process. The overall design is simple, greatly improving the stability and safety of the use of the trolley case.

[0035] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A wheel set structure for an electric trolley case, comprising a balance wheel set (2) installed at the bottom of the box body (1) and an auxiliary wheel set (3) installed at the lower end of the handle assembly (11), characterized in that: At the bottom of the box body (1), a driving wheel member (4) is further provided, and the driving wheel member (4) is located between the balance wheel group (2) and the auxiliary wheel group (3); Wherein, the driving wheel member (4) includes a wheel frame (41) installed below the box body (1), a driving wheel (42) is arranged inside the wheel frame (41), a fixing structure is arranged between the driving wheel (42) and the wheel frame (41), and the balance wheel group (2) and the auxiliary wheel group (3) are kept horizontal with the bottom edge of the wheel bottom of the driving wheel (42) through an adjusting member (5).

2. The wheel set structure for an electric trolley case according to claim 1, wherein: A U-shaped opening (411) is formed at the bottom of the wheel frame (41), and the shaft of the driving wheel (42) is placed in the U-shaped opening (411) and extends outwards.

3. The wheel set structure for an electric trolley case according to claim 2, characterized in that: The fixing structure includes a locking ring (43) sleeved on the shaft of the driving wheel (42), a clamping portion (44) is formed by bending the top of the locking ring (43), a clamping opening (45) is formed on the end face of the wheel frame (41), the clamping portion (44) is clamped in the clamping opening (45), and a locking member (46) that is threadedly connected to and abuts against the locking ring (43) is arranged on the shaft of the driving wheel (42).

4. The wheel set structure for an electric trolley case according to claim 3, wherein: A bent portion (47) is further bent at the bottom of the locking ring (43), the bent portion (47) is placed inside the U-shaped opening (411), and outwardly extending outer expansion edges (48) that contact the inner side of the U-shaped opening (411) are arranged on both sides of the bent portion (47).

5. The wheel set structure for an electric trolley case according to claim 1, characterized in that: The top of the balance wheel group (2) is connected to the box body (1) through an adjusting member (5) and a fastening member, and the top of the auxiliary wheel group (3) is connected to the handle assembly (11) through an adjusting member (5) and a fastening member.

6. The wheel set structure for an electric trolley case according to claim 5, characterized in that: The adjusting member (5) includes a gasket (51), a weight-reducing hole (52) is formed through the upper and lower end faces of the gasket (51), and arc-shaped openings (53) are communicated with the four corners of the weight-reducing hole (52), and the arc-shaped openings (53) are used for the fastening member to pass through.

7. An electric trolley case, characterized in that, It includes a wheel group structure according to any one of claims 1-6.

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