Trundle mechanism and household appliance

Abstract

The utility model relates to a trundle mechanism and a household electrical appliance, the trundle mechanism comprises a shell, a rotating member and a roller, the bottom of the shell is provided with a circular first accommodating groove, the rotating member is rotatably connected to the first accommodating groove, one side, deviating from the first accommodating groove, of the rotating member is provided with a second accommodating groove, and the roller is arranged in the second accommodating groove and is movably connected with the rotating member; therefore, rotation and sliding of the trundle mechanism are not affected, and meanwhile, the ground clearance can be effectively reduced, so that the passing rate of a slope rate test is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a caster mechanism and a household appliance. BACKGROUND

[0002] Casters are commonly installed at the bottom of a carrier that needs to be moved, such as a suitcase, an office desk and chair, or a trolley, etc. Through the design of multiple groups of casters, the carrier is facilitated to move.

[0003] In daily life, in order to facilitate the movement of a household appliance in a room, a caster mechanism is designed on the household appliance, which becomes a better choice. However, the caster mechanism in the prior art makes the ground clearance of the household appliance too large, so that when the household appliance installed with the caster mechanism is tested whether the inclination rate is qualified, the test pass rate is low due to the too high ground clearance. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a caster mechanism to solve the problem that a household appliance is prone to tip over.

[0005] In a first aspect, the present application provides a caster mechanism, comprising:

[0006] a housing, the bottom of the housing having a circular first accommodating groove;

[0007] a rotating member rotatably connected to the first accommodating groove, the side of the rotating member away from the first accommodating groove being provided with a second accommodating groove;

[0008] a rolling wheel arranged in the second accommodating groove and being in engagement with the rotating member.

[0009] Further, the groove bottom wall of the first accommodating groove is provided with a first annular groove;

[0010] the side of the rotating member facing the groove bottom wall of the first accommodating groove is provided with a second annular groove, the second annular groove being arranged corresponding to the first annular groove and enclosing a containing cavity.

[0011] Further, the containing cavity is further provided with a plurality of rolling balls.

[0012] Further, the number of the rolling balls is multiple.

[0013] Further, the central position of the groove bottom wall of the first accommodating groove is provided with a clamping member, the rotating member is provided with a clamping hole corresponding to the clamping member, the clamping member is arranged in the clamping hole and abuts against the groove bottom wall of the second accommodating groove.

[0014] Further, the clamping member comprises a plurality of clamping legs, the plurality of clamping legs are annularly distributed, the clamping legs are arranged in the clamping hole and abut against the groove bottom wall of the second accommodating groove.

[0015] Further, the clamping foot is provided with a clamping protrusion at one end away from the bottom wall of the first accommodating groove, and the clamping protrusion abuts against the bottom wall of the second accommodating groove.

[0016] A first inclined surface is arranged at the end of the clamping protrusion away from the first accommodating groove.

[0017] A second inclined surface is arranged at the side of the clamping hole away from the second accommodating groove.

[0018] Further, the two opposite groove walls of the first accommodating groove are respectively provided with a limiting groove, and the rotating shaft of the roller is installed in the limiting groove.

[0019] The groove wall of the limiting groove is further provided with a limiting protrusion, and the limiting protrusion is located below the rotating shaft of the roller.

[0020] Further, the axis direction of the rotating shaft of the roller is spaced apart from the rotating center of the rotating member.

[0021] In a second aspect, the application provides a household appliance, comprising:

[0022] an appliance body,

[0023] the caster mechanism as described above is arranged at the bottom of the appliance body.

[0024] The above technical solutions provided by the application have the following advantages compared with the prior art:

[0025] In the technical solutions of the application, the first accommodating groove is arranged on the shell to enable the rotating member to be installed in the first accommodating groove, and because the rotating member is rotationally connected in the first accommodating groove, the second accommodating groove is arranged on the rotating member to enable the roller to be installed in the second accommodating groove, so that when the mechanism is installed on the shell of the household appliance body, the mechanism as a whole is embedded on the shell of the household appliance body, thereby reducing the ground clearance of the caster mechanism and improving the pass rate of the inclination test without affecting the rotation and movement of the caster mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application together with the specification.

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0028] One or more embodiments are illustrated by way of example in the drawings in which like reference numerals indicate similar elements, and as such, clearances and the like are not necessarily drawn to scale. The drawings illustrate only typical embodiments of the application and therefore, should not be considered to narrow its scope.

[0029] Figure 1 A cross-sectional view of a caster mechanism and an electrical body according to an embodiment of the present application is shown in the figure;

[0030] Figure 2 A cross-sectional view of a caster mechanism and an electrical body according to an embodiment of the present application is shown in the figure; Figure 1 An enlarged view of the A figure according to an embodiment of the present application is shown in the figure;

[0031] Figure 3 An enlarged view of the B figure according to an embodiment of the present application is shown in the figure; Figure 1 A cross-sectional view of a caster mechanism and an electrical body according to an embodiment of the present application is shown in the figure;

[0032] Figure 4 An enlarged view of the B figure according to an embodiment of the present application is shown in the figure; Figure 3 An enlarged view of the B figure according to an embodiment of the present application is shown in the figure.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1, housing; 10, first accommodating cavity; 100, clamping piece; 11, first annular groove; 2, rotating piece; 20, second annular groove; 21, second accommodating cavity; 210, clamping hole; 211, limiting groove; 2110, limiting convex strip; 3, ball; 4, roller; 5, electrical body. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0036] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the elements and settings of particular examples in the following description are shown in the drawings. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the reference numerals and / or letters in different examples can be repeated. Such repetition is for the purpose of simplicity and clarity and does not indicate a relationship between the various embodiments and / or settings discussed.

[0037] For the convenience of description, spatial relative terms can be used in the specification to describe the relative position relationship or movement condition of one element or feature relative to another element or feature as shown in the drawings, such as "inner", "outer", "inboard", "outboard", "under", "below", "on", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientations depicted in the drawings. For example, if the device in the drawings is turned over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" another element or feature will be oriented as "above" or "above" another element or feature. Therefore, the example term "below" can include both up and down positions. The device can be additionally oriented (rotated by 90 degrees or in other directions) and the spatial relative relationship descriptors used in the specification are interpreted accordingly.

[0038] In order to solve the technical problem of large ground clearance of household appliances in the prior art, the application provides a caster mechanism which can reduce the ground clearance.

[0039] The first aspect, Figures 1 to 4 The caster mechanism provided by the embodiment of the application comprises a shell 1, a rotating part 2 and a roller 4. The bottom of the shell 1 has a circular first accommodating groove 10, and the rotating part 2 is rotationally connected to the first accommodating groove 10. The side of the rotating part 2 away from the first accommodating groove 10 is provided with a second accommodating groove 21. The roller 4 is arranged in the second accommodating groove 21 and is clamped with the rotating part 2.

[0040] It can be understood that the rotating part 2 is rotationally connected in the first accommodating groove 10, so that the rotating part 2 can rotate by 360 degrees without limitation in the first accommodating groove 10. The arrangement of the roller 4 can increase the smoothness of the movement of the mechanism, so that the mechanism can be more conveniently moved. Since the first accommodating groove 10 is recessed on the shell 1, when the mechanism is installed on the shell of the household appliance 5 body, the mechanism as a whole is embedded on the shell of the household appliance 5 body. In this way, the rotation and sliding of the caster mechanism are not affected, and the ground clearance is effectively reduced, thereby increasing the pass rate of the inclination rate test.

[0041] It should be noted that in the embodiment, the roller 4 comprises a pivot and a wheel body, the pivot is arranged in the wheel body, the pivot serves to connect the limiting groove 211, the pivot does not need to rotate in the second accommodating cavity relative to the wheel body, and only the wheel body needs to rotate on the pivot to achieve the effect of moving the mechanism; or a connecting rod is arranged on each side of the roller 4 and protrudes from the two sides of the roller 4 to be connected with the second accommodating cavity, at this time, when the roller 4 rotates, the connecting rod rotates together with the roller 4, and thus the effect of moving the mechanism is achieved.

[0042] As shown in Figure 2 In the technical scheme of the embodiment, the bottom wall of the first accommodating groove 10 is provided with a first annular groove 11; the side of the rotating piece 2 facing the bottom wall of the first accommodating groove 10 is provided with a second annular groove 20, the second annular groove 20 is arranged corresponding to the first annular groove 11, and the second annular groove 20 is surrounded to form an accommodating cavity.

[0043] As shown in Figure 2 In the technical scheme of the embodiment, the ball 3 is arranged in the accommodating cavity.

[0044] It can be understood that the cross section of the first annular groove 11 and the cross section of the second annular groove 20 are both fox-shaped and have the same size, so that the cross section of the accommodating cavity formed by the first annular groove 11 and the second annular groove 20 is circular, which provides installation space for the ball 3; when the ball 3 is installed in the accommodating cavity, the overall structure is similar to the structure of the bearing in the prior art, so that the rotating piece 2 can rotate in the first accommodating groove 10.

[0045] As shown in Figure 2 In the technical scheme of the embodiment, the number of the balls 3 is multiple.

[0046] It can be understood that the structure of the multiple balls 3 can make the rotating piece 2 rotate more smoothly in the first accommodating cavity.

[0047] As shown in Figure 2 In the technical scheme of the embodiment, the center position of the bottom wall of the first accommodating groove 10 is provided with a clamping piece 100; the rotating piece 2 is provided with a clamping hole 210 corresponding to the clamping piece 100, the clamping piece 100 is arranged in the clamping hole 210, and the clamping piece 100 abuts against the bottom wall of the second accommodating groove 21.

[0048] It can be understood that the clamping piece 100 serves as a pivot relative to the rotating piece 2, the rotating piece 2 is sleeved on the clamping piece 100 through the clamping hole 210, which can not only install the rotating piece 2 in the first accommodating cavity, but also can not affect the rotation of the rotating piece 2 in the first accommodating cavity.

[0049] As shown in Figure 2 or Figure 4As shown, in the technical solution of this embodiment, the end of the snap-fit ​​foot away from the bottom wall of the first receiving groove 10 is provided with a snap-fit ​​protrusion, and the snap-fit ​​protrusion abuts against the bottom wall of the second receiving groove 21; the end of the snap-fit ​​protrusion away from the first receiving groove 10 is provided with a first inclined surface; the snap-fit ​​hole 210 away from the second receiving groove 21 is provided with a second inclined surface.

[0050] Understandably, the snap-fit ​​protrusion can secure the rotating part 2 in the first receiving cavity, while the first and second inclined surfaces facilitate the installation of the rotating part 2 in the first receiving cavity.

[0051] like Figure 4 As shown, in the technical solution of this embodiment, the two opposite groove walls of the second receiving groove 21 are respectively provided with limiting grooves 211; the pivot of the roller 4 is installed in the limiting groove 211; the groove wall of the limiting groove 211 is also provided with limiting protrusions 2110, and the limiting protrusions are located below the rotating shaft of the roller 4.

[0052] Understandably, the limiting groove 211 and the limiting protrusion 2110 work together to stabilize the position of the roller 4 in the second receiving groove 21, so that when the mechanism needs to be moved, the roller 4 will not come out of the second receiving groove 21.

[0053] like Figure 4 As shown, in the technical solution of this embodiment, the axis of rotation of the roller 4 is spaced apart from the rotation center of the rotating component 2.

[0054] It is understandable that the roller 4 is positioned off-center from the center of the rotating component 2. When the mechanism needs to be turned, it is only necessary to push the mechanism in the desired direction, and the roller 4 can drive the rotating component 2 to turn, thereby achieving a 360-degree rotation effect.

[0055] Secondly, such as Figure 1 or Figure 3 As shown, this application also provides a household appliance, including an appliance body 5 and the caster mechanism described above. The specific structure of the caster mechanism is as described in the above embodiments. Since the appliance body 5 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The caster mechanism is located at the bottom of the appliance body 5.

[0056] like Figure 1 or Figure 3 As shown, the housing 1 is provided with a plurality of first receiving slots 10, and each first receiving slot 10 is provided with a rotating component 2; the bottom shell of the household appliance is provided with a plurality of caster mechanisms.

[0057] like Figure 1 or Figure 3As shown, the electric appliance body 5 is any one of an electric heater, a humidifier, an air purifier, and an electric fan.

[0058] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0059] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0061] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be connected, or detachable, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0063] In the description of the application, reference to "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the above expressions in various places in the description are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Also, the terms "comprises", "comprising", "includes", "including", "contains", "containing" or variations thereof do not specify an exhaustive or complete list of features, elements, or components, but rather are specified to mean that at least the features, elements, or components that are listed are present in the application.

[0064] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the application, the application can be practiced otherwise than as specifically described. Any feature, structure, material, or characteristic in the description can be combined in any suitable manner in one or more embodiments or examples.

[0065] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A caster mechanism, characterized in that, include: The housing (1) has a circular first receiving groove (10) at its bottom. A rotating component (2) is rotatably connected to the first receiving groove (10); a second receiving groove (21) is provided on the side of the rotating component away from the first receiving groove (10); wherein, the bottom wall of the first receiving groove (10) is provided with a first annular groove (11). The rotating component (2) has a second annular groove (20) on the side facing the bottom wall of the first receiving groove (10). The second annular groove (20) is provided corresponding to the first annular groove (11) and surrounds it to form a receiving cavity. The roller (4) is located in the second receiving groove (21) and is movably connected to the rotating part (2).

2. The caster mechanism according to claim 1, characterized in that, It also includes a ball bearing (3), which is disposed within the receiving cavity.

3. The caster mechanism according to claim 2, characterized in that, The number of the balls (3) is multiple.

4. The caster mechanism according to claim 1, characterized in that, A snap-fit ​​element (100) is provided at the center of the bottom wall of the first receiving groove (10); the rotating element (2) is provided with a snap-fit ​​hole (210) corresponding to the snap-fit ​​element (100), the snap-fit ​​element (100) passes through the snap-fit ​​hole (210) and abuts against the bottom wall of the second receiving groove (21).

5. The caster mechanism according to claim 4, characterized in that, The snap-fit ​​component (100) includes multiple snap-fit ​​feet, which are arranged in a ring. The snap-fit ​​feet pass through the snap-fit ​​hole (210) and abut against the bottom wall of the second receiving groove (21).

6. The caster mechanism according to claim 5, characterized in that, The snap-fit ​​foot has a snap-fit ​​protrusion at one end away from the bottom wall of the first receiving groove (10), and the snap-fit ​​protrusion abuts against the bottom wall of the second receiving groove (21); the end of the snap-fit ​​protrusion away from the first receiving groove has a first inclined surface; the snap-fit ​​hole has a second inclined surface that cooperates with the first inclined surface on one side away from the second receiving groove.

7. The caster mechanism according to claim 1, characterized in that, The first receiving groove (10) has two opposite groove walls respectively provided with limiting grooves (211); the rotating shaft of the roller (4) is installed in the limiting groove (211); The groove wall of the limiting groove (211) is also provided with a limiting protrusion (2110), which is located below the rotating shaft of the roller (4).

8. The caster mechanism according to any one of claims 1 to 7, characterized in that, The axis of the roller (4) is spaced apart from the rotation center of the rotating component (2).

9. A household appliance, characterized in that, include: Electrical appliance body (5). The caster mechanism as described in claim 8 is located at the bottom of the electrical body (5).

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