Connecting structure and cleaning device

Abstract

The utility model discloses a connecting structure and a cleaning device, the connecting structure is used for installing a rotating piece of a walking mechanism at the bottom of a machine body of the cleaning device, and the connecting structure comprises a connecting shaft and a limiting piece. A first connecting part of the connecting shaft is rotationally connected with the rotating piece, and a second connecting part of the connecting shaft is fixedly connected with the machine body; the limiting piece is arranged between the second connecting part and the rotating piece and matched with the machine body to limit rotation of the connecting shaft and limit movement of the connecting shaft in the direction away from the machine body. The disassembly and assembly operation between the connecting shaft and the machine body in the connecting structure is simple, convenient and feasible, and the operation is not limited by space.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning devices, in particular to a connection structure and a cleaning device provided with the component. Background Art

[0002] A vacuum cleaner is a cleaning device in a household appliance. In order to facilitate movement, a rotating part is generally provided at the bottom of the body. Two / two groups of rotating parts arranged coaxially on both sides of the bottom of the body are coaxially connected through a long axis. Since the long axis is relatively expensive and occupies a large space in the body, it is easy to affect the overall layout of the machine and cause space waste.

[0003] In order to save space, short shafts are usually used in combination with sleeves and screws to install rotating parts on the market. For example, please refer to the patent with publication number CN220141560U. In this patent, in order to fix the short shaft, a groove for fixing the sleeve is required to be provided on the machine body, a through hole for accommodating the short shaft is provided in the sleeve, and a limit plate for abutting against the end of the short shaft, as well as a groove and mounting hole for passing the screw are provided at the end of the sleeve away from the rotating part. Therefore, not only is the structure of the sleeve itself more complicated and the manufacturing cost is higher, but also the space occupied by the bottom of the machine body is larger. In addition, since the screw needs to pass through the inner hole of the sleeve from the end of the sleeve away from the short shaft and then be coaxially connected to the end of the short shaft, its operating space is limited and disassembly and assembly are more difficult.

[0004] Therefore, how to reduce the installation space of the rotating parts at the bottom of the body, and how to avoid limited operating space and difficulty in disassembly and assembly, are technical problems to be solved in the field of technology. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a connection structure and a cleaning device for installing a rotating member through the connection structure, wherein the connection shaft can be easily assembled and disassembled, and the operation process is not limited by space.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A connecting structure for mounting a rotating member of a walking mechanism on the bottom of a cleaning device, the connecting structure comprising:

[0008] A connecting shaft, wherein a first connecting portion of the connecting shaft is rotatably connected to the rotating member, and a second connecting portion of the connecting shaft is fixedly connected to the machine body;

[0009] A limiting member is disposed between the second connecting portion and the rotating member and cooperates with the machine body to limit the rotation of the connecting shaft and limit the movement of the connecting shaft in a direction away from the machine body.

[0010] Optionally, in the above connection structure, the limiting member can be connected to the machine body, and can cooperate with the machine body to form a limiting hole capable of accommodating a partial shaft section of the connecting shaft.

[0011] Optionally, in the above connection structure, the limiting member is provided with a first accommodating groove;

[0012] The first accommodating groove can be buckled with the second accommodating groove provided on the body to form the limiting hole.

[0013] Optionally, in the above connection structure, the limiting member includes:

[0014] A semi-cylindrical limiting portion, provided with the first accommodating groove;

[0015] The wing plate parts are respectively arranged on both sides of the semi-cylindrical limiting part, and the wing plate parts can be detachably connected to the body.

[0016] Optionally, in the above connection structure, the wing plate portion is provided with a first through hole;

[0017] The first connecting member can pass through the first through hole and be threadedly connected to a first mounting hole provided in the body.

[0018] Optionally, in the above connection structure, the wing plate portion is provided with a second positioning portion that can be matched with a first positioning portion provided on the body;

[0019] The first positioning portion includes a positioning column, and the second positioning portion includes a positioning hole; or the first positioning portion includes a positioning hole, and the second positioning portion includes a positioning column.

[0020] Optionally, in the above connection structure, both sides of one end of the semi-cylindrical limiting portion close to the rotating member are respectively provided with limiting baffles that are extended and protruded relative to the side wall of the first accommodating groove.

[0021] Optionally, the above connection structure further includes a gasket, which is sleeved on the connecting shaft and located between the rotating member and the limiting member.

[0022] Optionally, in the above connection structure, the second connection portion is provided with a second through hole extending radially along the connection axis, and the second connection member can be inserted into the second through hole and connected to the body to limit the second connection portion;

[0023] Alternatively, a radial protrusion is provided on the side of the connecting shaft, and the limiting member and / or the body is provided with a groove for axially limiting the radial protrusion;

[0024] Alternatively, a radial groove is provided on the side surface of the connecting shaft, and the limiting member and / or the body is provided with a protrusion which is axially limited by the radial groove.

[0025] A cleaning device comprises a body and a walking mechanism arranged at the bottom of the body, characterized in that a rotating part of the walking mechanism is installed at the bottom of the body through the connection structure described above.

[0026] It can be seen from the above technical solution that in the connection structure provided by the utility model, the connecting shaft is a short shaft, and the sleeve is cancelled. Therefore, when the bottom of the cleaning device body adopts the connection structure to install the rotating part of the walking mechanism, the bottom of the body does not need to provide a sleeve installation structure, which is not only conducive to simplifying the manufacturing and assembly process, but also the connection structure occupies less space at the bottom of the body, which is more friendly to the appearance design. In addition, the connection structure can be used to position the connecting shaft by using a limiter. Since the limiter is located between the second connection part of the connecting shaft and the rotating part, it can be seen that the limiter is located on the radial outside of the connecting shaft, and there is no space occupied by the axial outer end of the connecting shaft. Therefore, when disassembling and assembling the rotating part and the connecting shaft, the operation is not limited by space, and the disassembly and assembly operation is simple and easy.

[0027] In addition, in the cleaning device provided by the utility model, since the rotating member is installed at the bottom of the machine body by using the above-mentioned connection structure, the purpose of not being restricted by space and being easy to disassemble and assemble can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 An exploded view of the installation structure of a bottom rotating part of a cleaning device provided in an embodiment of the utility model.

[0030] Figure 2 for Figure 1 A magnified image of the exploded part.

[0031] Figure 3 A vertical cross-sectional view of a cleaning device provided by an embodiment of the utility model at the central axis position of a rotating part.

[0032] Figure 4 A schematic diagram of the bottom structure of a cleaning device provided in an embodiment of the utility model.

[0033] Figure 5 for Figure 4 Enlarged view of the upper left portion.

[0034] in:

[0035] 1-machine body, 2-connecting shaft, 3-rotating part, 4-gasket, 5-limiting part,

[0036] 11-first mounting hole, 12-first positioning portion, 13-second receiving groove,

[0037] 21-second through hole, 22-plane, 23-limiting boss,

[0038] 201-first connection part, 202-second connection part,

[0039] 51-limit baffle, 52-semi-cylindrical limiting part, 53-wing plate part,

[0040] 54-second positioning portion, 55-first through hole,

[0041] 521- first receiving groove,

[0042] 61- second connecting member, 62- first connecting member. DETAILED DESCRIPTION

[0043] The utility model provides a connection structure and a cleaning device for installing a rotating part through the connection structure. The connection shaft can be easily assembled and disassembled, and the operation process is not limited by space.

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] See also Figures 1 to 5 The connection structure provided by the embodiment of the utility model is used to install the rotating member 3 of the walking mechanism at the bottom of the body 1 of the cleaning device. Specifically, the connection structure includes a connecting shaft 2 and a limiting member 5, wherein: the first connecting portion 201 of the connecting shaft 2 is rotatably connected to the rotating member 3, and the second connecting portion 202 of the connecting shaft 2 is fixedly connected to the body 1; the limiting member 5 is arranged between the second connecting portion 202 and the rotating member, and cooperates with the body 1 to press the connecting shaft 2 against the bottom of the body 1, limit the rotation of the connecting shaft 2, and limit the movement of the connecting shaft 2 in the direction away from the body 1.

[0046] It can be seen that the connecting shaft 2 in the connection structure is a short shaft, and the sleeve is cancelled. Therefore, when the bottom of the cleaning device body adopts the connection structure to install the rotating part of the walking mechanism, the bottom of the body does not need to be provided with a sleeve installation structure, which is not only conducive to simplifying the manufacturing and assembly process, but also the connection structure occupies less space at the bottom of the body, which is more friendly to the appearance design. In addition, the connection structure can be used to position the connecting shaft 2 by using a limiter 5. Since the limiter 5 is located between the second connection part 202 of the connecting shaft 2 and the rotating part 3, it can be seen that the limiter 5 is located on the radial outside of the connecting shaft 2, and there is no space occupied on the axial outer end of the connecting shaft 2. Therefore, when disassembling and assembling the rotating part 3 and the connecting shaft 2, the disassembly and assembly operation is not limited by space, and the operation process is simple and easy.

[0047] In some embodiments, the stopper 5 is not only connected to the body 1, but also cooperates with the body 1 to form a stopper hole capable of accommodating a portion of the connecting shaft 2. Figure 1 and Figure 2 The limiting member 5 is provided with a first accommodating groove 521, and the body 1 is provided with a second accommodating groove 13. The first accommodating groove 521 and the second accommodating groove 13 can be buckled to form the above-mentioned limiting hole capable of accommodating a partial shaft section of the connecting shaft 2. Generally, the partial shaft section of the connecting shaft 2 located in the limiting hole is tightly matched with the limiting hole, so that the limiting member 5 can not only play the role of radial positioning and stable connection of the connecting shaft 2, but also play the role of limiting the rotation of the connecting shaft 2 and limiting the axial movement of the connecting shaft 2 to a certain extent.

[0048] In some embodiments, the limiting member 5 includes a semi-cylindrical limiting portion 52 and a wing portion 53, wherein: the semi-cylindrical limiting portion 52 is provided with the above-mentioned first receiving groove 521 on the side close to the body 1, and the two sides of the semi-cylindrical limiting portion 52 are respectively provided with wing portions 53 for fixed connection with the body 1. For example, each wing portion 53 is provided with a first through hole 55; correspondingly, the body 1 is respectively provided with first mounting holes 11 on both sides of the second receiving groove 13. Therefore, the first connecting member 62 is used to pass through the first through hole 55 on the limiting member 5 and the first mounting hole 11 on the body 1 and then be fastened to the body 1, so that the fixed connection between the body 1 and the wing portion 53 can be achieved. For example, see Figure 2 and Figure 3 , a screw is used as the first connecting member 62, the head end of which is located outside the first through hole 55, and the bottom end is inserted into the threaded hole of the body 1 and is threadedly connected to the body 1, so that the limiter 5 and the body 1 can be detachably fastened. However, it is not limited to this, and in other examples, bolts, pins or other connecting structures can also be used as the first connecting member 62, as long as the detachable fastening connection between the wing plate portion 53 and the body 1 can be achieved.

[0049] In some embodiments, see Figure 1 and Figure 2 ,as well as Figure 4 and Figure 5 , the body 1 is provided with a first positioning portion 12 on both sides of the second accommodating groove 13, and the wing plate portion 53 is provided with a second positioning portion 54 that can be adapted to the first positioning portion 12. Among them, the first positioning portion 12 includes a positioning column, and the second positioning portion 54 includes a positioning hole; or, the first positioning portion 12 includes a positioning hole, and the second positioning portion 54 includes a positioning column. Thus, by means of the positioning column and the positioning hole plug-in positioning method, the limiting member 5 and the body 1 can be pre-positioned when assembling the limiting member 5, so as to facilitate the position alignment and connection of other subsequent connecting members. For example, the above-mentioned positioning structure can make the first through hole 55 on the limiting member 5 and the first mounting hole 11 on the body 1 coaxially aligned to achieve pre-positioning, and then the first connecting member 62 can be installed very conveniently without adjusting the position of the limiting member 5.

[0050] See also Figure 2 In some embodiments, the semi-cylindrical limiting portion 52 of the limiting member 5 is provided with limiting baffles 51 protruding from the side walls of the first accommodating groove 521 on both sides of one end thereof close to the rotating member 3. The limiting baffles 51 can be used to axially limit the rotating member 3 to prevent the rotating member 3 from moving toward the direction close to the machine body 1.

[0051] See also Figure 2 and Figure 3 In some embodiments, the rotating member 3 is generally a roller, and is rotatably mounted on the first connecting portion 201 of the connecting shaft 2. The first connecting portion 201 can be one end of the connecting shaft 2, and is located in the center groove / center through hole of the roller. Moreover, a limiting boss 23 is provided at the end of the connecting shaft 2 extending into the roller, through which the connecting shaft 2 can be axially limited in the roller, and can cooperate with the limiting baffle 51 of the limiting member 5 to axially limit the two sides of the roller.

[0052] Furthermore, in some embodiments, the connection structure provided by the present invention further includes a gasket 4. The gasket 4 is generally sleeved on the connection shaft 2 and located between the rotating member 3 and the limiting baffle 51 of the limiting member 5 to prevent the rotating member 3 from being worn.

[0053] In some embodiments, the second connecting portion 202 of the connecting shaft 2 is provided with a second through hole 21 extending radially along the connecting shaft. When the connecting shaft 2 is installed on the bottom of the body 1, the second connecting member 61 is inserted into the second through hole 21, and the second connecting member 61 is fixedly connected to the body 1, so that the second connecting portion 202 can be limited by the second connecting member 61. For details, see Figure 3, the axial direction of the second connecting member 61 is perpendicular to the axial direction of the connecting shaft 2, and the second connecting member 61 penetrates the radial through hole (i.e., the second through hole 21) disposed near the end of the connecting shaft 2 away from the rotating member 3, and is tightly connected to the body 1. It should be noted here that the key role of the second connecting member 61 is to limit the connecting shaft 2 by using the lever principle, which not only presses against the end of the connecting shaft 2 away from the rotating member 3 (i.e., the second connecting portion 202) in the radial direction of the connecting shaft 2, but also has the function of axially limiting the connecting shaft 2. For example, in a specific implementation, a screw can be used as the second connecting member 61, and the body 1 is provided with a second mounting hole 14 that can be threadedly connected with the second connecting member 61. Specifically, the top end of the second connecting member 61 is located outside the port of the second through hole 21 of the connecting shaft 2, and limits the connecting shaft 2 in the radial direction of the connecting shaft; the bottom end of the second connecting member 61 passes through the second through hole 21 and is threadedly connected to the second mounting hole 14 of the body 1, so as to play the role of axially limiting the connecting shaft 2. Thus, the connecting shaft 2 and the machine body 1 can be detachably connected through the second connecting member 61. However, it is not limited thereto, and in other examples, bolts, pins or other connecting members can also be used as the second connecting member 61, as long as the connecting shaft 2 and the machine body 1 can be detachably connected.

[0054] Moreover, in other embodiments, a radial protrusion may be provided on the side of the connecting shaft 2, and the stopper 5 and / or the body 1 may be provided with a groove capable of accommodating the radial protrusion, so that the connecting shaft 2 is axially limited by the groove structure on the stopper 5 and / or the body 1; or, a radial groove may be provided on the side of the connecting shaft 2, and the stopper 5 and / or the body 1 may be provided with a protrusion capable of extending into the radial groove, so that the connecting shaft 2 is axially limited by the protrusion structure on the stopper 5 and / or the body 1. It can be seen that the connecting shaft 2 may also be axially limited by the stopper 3 and / or the body 1, and in this case, the second connecting member 61 and the second through hole 21 may not be provided, or the second connecting member 61 and the second through hole 21 may be used in combination to further ensure the stable connection of the connecting shaft 2. In a preferred embodiment, the limiting member 5 cooperates with the body 1 to form the limiting hole capable of accommodating a partial shaft section of the connecting shaft 2, through which the connecting shaft 2 can be radially limited; and then the second connecting member 61 is used to lock and limit the second connecting portion 202 of the connecting shaft 2 away from the rotating member 3.

[0055] In some embodiments, a platform-shaped mounting surface 22 is respectively provided on the upper and lower sides of the second connecting portion 202 of the connecting shaft 2, and the two platform-shaped mounting surfaces 22 are parallel to each other and are parallel to the central axis of the connecting shaft 2. Moreover, the second through hole 21 is provided on the platform-shaped mounting surface 22. After the second connecting member 61 is installed in the second through hole 21, one of the platform-shaped mounting surfaces 22 abuts against the machine body 1, and the other platform-shaped mounting surface 22 abuts against the head flange of the second connecting member 61, so that when the second connecting member 61 is fastened to the machine body 1, the head flange of the second connecting member 61 can press the second connecting portion 202 of the connecting shaft 2 against the bottom of the machine body 1. Among them, the contact area between the second connecting portion 202 of the connecting shaft 2 and the machine body 1, and the contact area between the head flange of the second connecting member 61 and the second connecting portion 202 of the connecting shaft 2 can be increased by the platform-shaped mounting surface 22, so as to facilitate ensuring a stable connection between the second connecting member 61 and the connecting shaft 2 and the machine body 2.

[0056] In some embodiments, the connecting shaft 2 is made of hard metal material, which can bear a greater weight than the shaft made of plastic in the prior art, and is suitable for large-capacity cleaning devices, such as large-capacity wet and dry vacuum cleaners.

[0057] The embodiment of the utility model further provides a cleaning device, which includes a body 1 and a traveling mechanism arranged at the bottom of the body 1 , wherein a rotating member 3 of the traveling mechanism is installed at the bottom of the body 1 through the connection structure described above.

[0058] Specifically, the cleaning device can be a vacuum cleaner, or any other device with cleaning and walking functions.

[0059] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connection structure for mounting the rotating part of a walking mechanism on the bottom of a cleaning device, characterized in that: The connection structure comprises: A connecting shaft, wherein a first connecting portion of the connecting shaft is rotatably connected to the rotating member, and a second connecting portion of the connecting shaft is fixedly connected to the machine body; A limiting member is disposed between the second connecting portion and the rotating member and cooperates with the machine body to limit the rotation of the connecting shaft and limit the movement of the connecting shaft in a direction away from the machine body.

2. The connection structure according to claim 1, characterized in that: The limiting member can be connected to the machine body, and can cooperate with the machine body to form a limiting hole capable of accommodating a partial shaft section of the connecting shaft.

3. The connection structure according to claim 2, characterized in that: The limiting member is provided with a first accommodating groove; The first accommodating groove can be buckled with the second accommodating groove provided on the body to form the limiting hole.

4. The connection structure according to claim 3, characterized in that: The limiting member comprises: A semi-cylindrical limiting portion, provided with the first accommodating groove; The wing plate parts are respectively arranged on both sides of the semi-cylindrical limiting part, and the wing plate parts can be detachably connected to the body.

5. The connection structure according to claim 4, characterized in that: The wing plate portion is provided with a first through hole; The first connecting member can pass through the first through hole and be threadedly connected to a first mounting hole provided in the body.

6. The connection structure according to claim 4, characterized in that: The wing plate portion is provided with a second positioning portion that can be matched with the first positioning portion provided on the body; The first positioning portion includes a positioning column, and the second positioning portion includes a positioning hole; or the first positioning portion includes a positioning hole, and the second positioning portion includes a positioning column.

7. The connection structure according to claim 4, characterized in that: Limit baffles extending and protruding relative to the side wall of the first accommodating groove are respectively arranged on both sides of one end of the semi-cylindrical limiting portion close to the rotating member.

8. The connection structure according to claim 1, characterized in that: It also includes a gasket, which is sleeved on the connecting shaft and located between the rotating member and the limiting member.

9. The connection structure according to claim 1, characterized in that: The second connecting portion is provided with a second through hole extending radially along the connecting axis, and the second connecting member can be inserted into the second through hole and connected to the body to limit the second connecting portion; Alternatively, a radial protrusion is provided on the side of the connecting shaft, and the limiting member and / or the body is provided with a groove for axially limiting the radial protrusion; Alternatively, a radial groove is provided on the side surface of the connecting shaft, and the limiting member and / or the body is provided with a protrusion which is axially limited by the radial groove.

10. A cleaning device, comprising a body and a walking mechanism arranged at the bottom of the body, characterized in that: The rotating part of the walking mechanism is installed at the bottom of the machine body through the connecting structure described in any one of claims 1 to 9.

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