Hidden universal wheel

Abstract

The hidden type universal wheel comprises a shell, a rotating shell and a bottom wheel, the shell is a cavity with an opening in the lower end, the cross section of the cavity is in a circular shape, the rotating shell is matched with the cavity in shape and installed in the cavity in a pivoted mode, the rotating shell can rotate along the axis of the cavity, the bottom wheel is arranged on the lower wall of the rotating shell in a pivoted mode, and the bottom wheel is arranged on the lower wall of the rotating shell in a pivoted mode. The lower ends of the bottom wheels extend out of the rotating shell. The universal wheel is further combined through a simple structure, the structure is simple, meanwhile, the size is small, in the specific assembling process, the rotating shell is installed in the cavity of the shell, then the bottom wheel is installed on the lower wall of the rotating shell, the rotating shell can rotate around the axis by 360 degrees, and certainly, a limiting structure can be arranged according to actual requirements to limit the swing angle of the rotating shell. Wherein the shell is installed on a preset moving object, and displacement of the moving object is achieved through rotation of the bottom wheels; the structure combination is simple, the attractiveness is good, and meanwhile the overall height is small.

Description

Technical Field

[0001] The utility model relates to the field of universal wheels, and particularly to a concealed universal wheel. Background Art

[0002] With the development of the mobility of household products, the design of universal wheels has also evolved. However, the existing universal wheels have the following problems: 1. The main body has a relatively large height, mainly including a bottom wheel and a rotating wheel, and the combination of the two structures increases their volume accordingly; 2. Generally, the bottom wheel is exposed, so the aesthetic appearance is relatively poor, especially for existing household rollers, which affects the integrity with the household. Summary of the Utility Model

[0003] The main object of the utility model is to propose a concealed universal wheel, aiming to improve the structure of the universal wheel, making it simple in structure and convenient to assemble. Meanwhile, it has good stability (and relatively low cost).

[0004] To achieve the above object, the utility model proposes a concealed universal wheel, comprising:

[0005] A housing, which is a cavity with an opening at the lower end, and the cross-section of the cavity is circular;

[0006] A rotating housing, which is adapted to the shape of the cavity and is pivotally installed in the cavity, and the rotating housing can rotate along the axis of the cavity;

[0007] A bottom wheel, which is pivotally arranged on the lower wall of the rotating housing, and the lower end of the bottom wheel extends out of the rotating housing.

[0008] In the actual design, through a simple structure, a universal wheel is formed, which is simple in structure and small in volume. In the specific assembly, the rotating housing is installed in the cavity of the housing, and then the bottom wheel is installed on the lower wall of the rotating housing. The rotating housing can rotate along the axis (for example, 360 degrees, and of course, a limiting structure can be set according to actual needs to limit its swing angle). The housing is installed on a predetermined moving object, and the displacement of the moving object is realized through the rotation of the bottom wheel;

[0009] This structure is simple to combine and has good aesthetic appearance. Meanwhile, the overall height is relatively small. Brief Description of the Drawings

[0010] Figure 1 Half-sectional view of the utility model Figure 1 ;

[0011] Figure 2 Half-sectional view of the utility model Figure 2 ;

[0012] Figure 3 Exploded view of the utility modelFigure 1 ;

[0013] Figure 4 is for the explosion of the present utility model Figure 2 ;

[0014] Figure 5 is the three-dimensional schematic diagram of the present utility model.

[0015] In the figure,

[0016] 1 is the housing, 11 is the opening, 12 is the cavity, 13 is the blocking part, 14 is the inclined surface,

[0017] 2 is the rotating housing,

[0018] 3 is the bottom wheel, 31 is the wheel body, 32 is the rotating shaft, 33 is the limiting groove,

[0019] 4 is the rolling groove, 40 is the ball, 41 is the first groove, 42 is the second groove,

[0020] 51 is the positioning post, 511 is the swing arm, 512 is the deformation groove, 52 is the positioning hole, 53 is the hook,

[0021] 6 is the clamping projection. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if the embodiments of the present utility model involve descriptions such as "first" or "second", the descriptions of "first" or "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0025] As Figures 1 to 5 shown, a concealed universal wheel includes:

[0026] A housing 1, the housing 1 being a cavity 12 with an opening 11 provided at the lower end (where the opening 11 is provided with a chamfer to facilitate the insertion of the rotating shell), and the cross-section of the cavity 12 being circular;

[0027] A rotating shell 2, the rotating shell 2 being adapted to the shape of the cavity 12 and pivotally installed in the cavity 12, and the rotating shell 2 being rotatable along the axis 100 of the cavity 12;

[0028] A bottom wheel 3, the lower wall of the rotating shell being pivotally provided with a bottom wheel 3, and the lower end of the bottom wheel 3 extending out of the rotating shell 2.

[0029] In actual design, through a simple structure, a universal wheel is combined, and the structure is simple and the volume is small at the same time. In specific assembly, the rotating shell 2 is installed in the cavity 12 of the housing 1, and then the bottom wheel 3 is installed on the lower wall of the rotating shell 2. The rotating shell 2 can rotate along the axis (for example, 360 degrees, and of course, a limiting structure can also be set according to actual needs to limit its swing angle). The housing 1 is installed on a predetermined moving object, and the displacement of the moving object is realized through the rotation of the bottom wheel;

[0030] This structural combination is simple and has good aesthetics. At the same time, the overall height is small.

[0031] Specifically, a first groove 41 is provided on the top wall of the cavity 12, and a second groove 42 matching the first groove 41 is provided on the upper wall of the rotating shell 2. The first groove 41 and the second groove enclose a rolling groove 4, and a plurality of balls 40 are placed in the rolling groove 4. The setting of the balls 40 can realize the stable 360-degree rotation of the rotating shell 2 and also play a supporting role. Of course, a bearing can also be used to realize the axial rotation of the rotating shell 2, but the cost is relatively high.

[0032] In an embodiment of the present utility model, a positioning post 51 extends downward from the middle of the housing 1, and a positioning hole 52 matching with the positioning post 51 is provided in the middle of the rotating housing 2.

[0033] Specifically, a hook 53 extending outward is provided at the lower end of the positioning post 51, and the hook 53 is hooked on the lower end wall of the positioning hole 52. Of course, specifically, a groove may also be provided on the outer peripheral wall of the positioning post 51, and a bump that fits into the groove is provided on the inner wall of the positioning hole 52 to realize the rotational connection between the housing 1 and the rotating housing 2 and ensure that the axis is consistent when the rotating housing 2 rotates.

[0034] In an embodiment of the present utility model, the positioning post 51 is cylindrical, and the positioning post 51 is composed of at least two spaced swing arms 511, and a deformation groove 512 is provided between the two swing arms 511, so as to realize the elastic deformation of the positioning post 51 and further realize the engagement and disengagement of the hook 53.

[0035] Specifically, spaced clamping protrusions 6 are provided on the outer peripheral wall of the housing 1, which facilitates the overall clamping of the housing 1 onto a moving object.

[0036] In an embodiment of the present utility model, a screw rod is provided at the upper end of the housing 1, and a universal wheel is installed on the screw rod. The screw rod can be installed on the inner wall of the positioning post 51, thereby realizing the locking of the positioning post 51.

[0037] Specifically, the positioning post 51 is integrally formed with the housing 1 or detachably installed on the housing 1. Integral formation can save the assembly steps, and the detachable structure has a lower mold cost but higher material requirements.

[0038] In an embodiment of the present utility model, the bottom wheel includes a wheel body 31 and a rotating shaft 32 passing through the middle of the wheel body 31. A groove for partially receiving the wheel body 31 is provided at the lower end of the rotating housing 2, and limiting grooves 33 are provided on both sides of the groove. The limiting grooves 33 are used to install both ends of the rotating shaft, thereby realizing the installation of the bottom wheel.

[0039] Specifically, a blocking portion 13 extends outward from the lower end of the outer peripheral wall of the housing 1, and the lower wall of the blocking portion 13 is an inclined surface 14. The setting of the blocking portion 13 can facilitate the installation of the housing 1 on a predetermined moving object, and the inclined surface 14 can prevent foreign objects from being hooked during the movement.

[0040] The above are only embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A concealed universal wheel, characterized in that, Comprising: A housing, the housing being a cavity with an opening at the lower end, and the cross-section of the cavity being circular; A rotating shell, the rotating shell being adapted to the shape of the cavity and pivotally mounted within the cavity, and the rotating shell being rotatable along the axis of the cavity; A bottom wheel, a pivotally arranged bottom wheel being provided on the lower wall of the rotating shell, and the lower end of the bottom wheel extending out of the rotating shell.

2. The hidden universal wheel according to claim 1, wherein: A first groove is provided on the top wall of the cavity, and a second groove cooperating with the first groove is provided on the upper wall of the rotating shell. The first groove and the second groove enclose a rolling groove, and a plurality of balls are placed in the rolling groove.

3. The concealed universal wheel according to claim 1, wherein: A positioning post extends downward from the middle of the housing, and a positioning hole cooperating with the positioning post is provided in the middle of the rotating shell.

4. The hidden universal wheel according to claim 3, wherein: A hook extending outward is provided at the lower end of the positioning post, and the hook is hooked on the lower end wall of the positioning hole.

5. The concealed universal wheel according to claim 3, wherein: The positioning post is cylindrical and is composed of at least two spaced swing arms, and a deformation groove is provided between the two swing arms.

6. The hidden universal wheel according to claim 1, wherein: Spaced clamping protrusions are provided on the outer peripheral wall of the housing.

7. The hidden universal wheel according to claim 1, characterized in that: A screw is provided at the upper end of the housing.

8. The hidden universal wheel according to claim 3, wherein: The positioning post is integrally formed with the housing or detachably mounted on the housing.

9. The hidden universal wheel according to claim 1, wherein: The bottom wheel includes a wheel body and a rotating shaft passing through the middle of the wheel body. A groove for partially receiving the wheel body is provided at the lower end of the rotating shell, and limiting grooves are provided on both sides of the groove for mounting both ends of the rotating shaft.

10. The concealed universal wheel according to claim 1, characterized in that: A blocking portion extends outward from the lower end of the outer peripheral wall of the housing, and the lower wall of the blocking portion is an inclined surface.

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