Universal wheel assembly and cleaning equipment

Abstract

The utility model relates to a universal wheel assembly and cleaning equipment. The universal wheel assembly comprises a connecting support 20, an elastic piece 30 and a cover plate 40. The elastic piece 30 is arranged between the cover plate 40 and the connecting bracket 20, so that a gap is formed between the cover plate 40 and the connecting bracket 20; furthermore, a gap is formed between the cover plate and the connecting bracket under the action of the elastic force of the elastic piece, so that the condition of noise generated by collision between the cover plate and the connecting piece under external impact is avoided, and the movement stability of the universal wheel assembly is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a universal wheel assembly and a cleaning equipment. Background Art

[0002] In recent years, as people's living standards have improved, more and more families have begun to use various cleaning equipment, such as sweeping robots, floor scrubbers and other equipment to reduce labor intensity and improve the quality of life. Taking a sweeping robot as an example, during the operation of an existing sweeping robot, especially when the universal wheel passes through the gap between the floor or floor tiles, the universal wheel will jump up and down, thereby generating noise. At the same time, due to the up and down jumping of the universal wheel, the overall recognition and guidance accuracy of the sweeping robot will be reduced, thereby affecting the overall running stability and cleaning ability of the sweeping robot.

[0003] Therefore, it is necessary to provide an improved universal wheel assembly to solve at least one of the above-mentioned problems in the prior art. Utility Model Content

[0004] The present application provides a universal wheel assembly including a connecting bracket, an elastic member, and a cover plate; the elastic member is arranged between the cover plate and the connecting bracket so that a gap is formed between the cover plate and the connecting bracket.

[0005] Furthermore, it also includes a rolling assembly; the rolling assembly includes a connecting shaft and a rotating block, the connecting bracket, the elastic member and the cover plate are respectively mounted on the connecting shaft, one end of the connecting shaft is connected to the connecting member, and the other end of the connecting shaft is connected to the rotating block.

[0006] Furthermore, the initial elastic force of the elastic member is greater than the gravity of the rolling assembly.

[0007] Furthermore, one of the cover plate and the connecting bracket is provided with a first limiting structure, and the other is provided with a second limiting structure; the first limiting structure cooperates with the second limiting structure to limit the relative rotation between the cover plate and the connecting bracket.

[0008] Furthermore, the axial length of the connecting shaft is greater than the sum of the lengths of the connecting bracket and the cover plate.

[0009] Furthermore, the connecting bracket is provided with a receiving portion, and the elastic member is at least partially received in the receiving portion.

[0010] Furthermore, a connecting hole is provided on the connecting bracket, the connecting hole is communicated with the accommodating portion, and the aperture of the connecting hole is smaller than the aperture of the accommodating portion.

[0011] Furthermore, the rotating block also includes a mounting frame and a rotating member; the rotating member is rotatably connected to the mounting frame; and one end of the connecting shaft is connected to the mounting frame.

[0012] Furthermore, the rotating member has a rotating body and a rotating shaft, the rotating body is sleeved on the rotating shaft, and the rotating body is rotatably connected to the rotating shaft; the rotating shaft is fixed on the mounting frame.

[0013] Furthermore, at least one connecting portion is provided on the connecting bracket, and the connecting portion is used to connect the connecting bracket to a preset position.

[0014] The present application also provides a cleaning device, comprising the universal wheel assembly as described above, wherein the universal wheel assembly is arranged at the bottom of the cleaning device.

[0015] Furthermore, the cleaning device comprises a body, and the body is detachably fixedly connected to the connecting bracket.

[0016] The universal wheel assembly provided by the present application has at least the following technical effects:

[0017] A universal wheel assembly of the present application includes a connecting bracket, an elastic member and a cover plate; the elastic member is arranged between the cover plate and the connecting bracket, and then under the elastic force of the elastic member, a gap is formed between the cover plate and the connecting bracket. In the present application, the cover plate and the connecting member are abutted by the elastic force provided by the elastic member, and a gap is formed between the cover plate and the connecting bracket, thereby limiting the sliding of the cover plate along the connecting shaft, avoiding the collision between the cover plate and the connecting member under external impact and generating noise, and at the same time improving the movement stability of the universal wheel assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art descriptions are 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.

[0019] Figure 1 : A schematic diagram of the overall structure of the universal wheel assembly provided in an embodiment of the utility model;

[0020] Figure 2 : A cross-sectional view of a universal wheel assembly provided by an embodiment of the utility model;

[0021] Figure 3 : A schematic diagram of the structure of the connecting bracket provided in an embodiment of the utility model;

[0022] Figure 4 : A cross-sectional view of a connecting bracket provided by an embodiment of the utility model;

[0023] Figure 5 : A schematic diagram of the structure of the cover plate provided by an embodiment of the utility model;

[0024] Among them, the reference numerals in the figure correspond to:

[0025] 10-rolling assembly, 20-connecting bracket, 30-elastic member, 40-cover plate, 50-connecting member, 60-gap, 101-connecting shaft, 102-rotating member, 103-mounting frame, 104-rotating body, 105-rotating shaft, 201-accommodating portion, 202-connecting hole, 203-connecting portion, 401-first limiting structure, 402-second limiting structure. DETAILED DESCRIPTION

[0026] 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.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0028] The following describes the embodiments with reference to the accompanying drawings, which do not limit the contents of the utility model described in the claims.

[0029] In order to solve the problem that the universal wheel of the existing sweeper will bounce up and down during operation, thereby generating noise and reducing the overall recognition and guidance accuracy of the sweeper, the embodiment of the present application provides a universal wheel assembly. Figure 1-2 As shown, the universal wheel assembly includes a connecting bracket 20, an elastic member 30 and a cover plate 40; the elastic member 30 is arranged between the cover plate 40 and the connecting bracket 20, so that a gap is formed between the cover plate 10 and the connecting bracket.

[0030] In this way, in this embodiment, the elastic member 30 is arranged between the cover plate 40 and the connecting bracket 20, and then under the action of the elastic force provided by the elastic member 30, a gap is formed between the cover plate 40 and the connecting bracket 20, thereby avoiding the collision between the cover plate 40 and the connecting bracket 20 under the influence of external impact and generating noise, while improving the movement stability of the universal wheel assembly.

[0031] In an embodiment of the present application, the universal wheel assembly also includes a rolling assembly 10 and a connecting member 50; the rolling assembly 10 includes a connecting shaft 101 and a rotating block, and the connecting bracket 20, the elastic member 30 and the cover plate 40 are respectively mounted on the connecting shaft 101, one end of the connecting shaft 101 is connected to the connecting member 50, and the other end of the connecting shaft 101 is connected to the rotating block.

[0032] Specifically, the connecting member 50 can be a fastening screw, and one end of the connecting shaft 101 is provided with a threaded hole that cooperates with the fastening screw. Through the connection between the connecting member 50 and the connecting shaft 101, the axial movement of the cover plate 40 along the connecting shaft 101 is limited.

[0033] like Figure 2 As shown, the elastic member 30 can be a spring. Specifically, in the assembled state, one end of the elastic member 30 abuts against the bottom wall of the connecting bracket 20, and the other end of the elastic member 30 abuts against the cover plate 40; under the elastic force of the elastic member 30, a gap 60 is formed between the cover plate 40 and the connecting bracket 20.

[0034] In the embodiment of the present application, the initial elastic force value of the elastic member 30 is greater than or equal to the gravity of the rolling assembly 10 .

[0035] Specifically, the elastic member 30 may be a mechanical part that works by utilizing the elasticity of a material, such as a spring.

[0036] Preferably, the initial elastic force value of the elastic member 30 may be 1-1.5 times of the gravity of the rolling assembly 10 .

[0037] Exemplarily, the weight of the rolling assembly 10 is 26.5 g, and the initial elastic force value of the elastic member 30 is 0.026 N.

[0038] In the embodiment of the present application, the initial elastic force of the elastic member 30 is greater than or equal to the gravity of the rolling assembly 10. Therefore, during the movement of the rolling assembly 10, especially when the rolling assembly 10 passes through the gap between the floor or tiles, the cover plate 40 is always in contact with the connecting member 50 under the elastic force of the spring, thereby ensuring that the gap 60 between the cover plate 40 and the connecting bracket 20 remains unchanged, thereby avoiding the collision between the cover plate 40 and the connecting member 50 and generating noise, while improving the movement stability of the universal wheel assembly.

[0039] like Figure 3-5As shown, in the embodiment of the present application, one of the cover plate 40 and the connecting bracket 20 is provided with a first limiting structure 401, and the other is provided with a second limiting structure 402; the first limiting structure 401 and the second limiting structure 402 cooperate with each other to limit the relative rotation between the cover plate 40 and the connecting bracket 20.

[0040] In some embodiments, the cover plate 40 is provided with a first limiting structure 401, which may be a limiting protrusion; the connecting bracket 20 is provided with a second limiting structure 402, which may be a limiting groove;

[0041] Specifically, at least one limiting protrusion is provided on the cover plate 40 , and the connecting bracket 20 is provided with limiting recesses matching the number of the limiting protrusions.

[0042] Specifically, the shape of the limiting protrusion can be rectangular or semicircular, which is not limited in the present application.

[0043] Furthermore, under the action of the spring force, at least part of the limiting protrusion can be limitedly matched with the limiting groove, thereby limiting the relative rotation between the cover plate 40 and the connecting bracket 20.

[0044] In some other embodiments, a limiting groove is provided on the cover plate 40 ; and a limiting protrusion is provided on the connecting bracket 20 .

[0045] like Figure 3-5 As shown, a plurality of limiting protrusions are arranged on the cover plate 40, and a limiting groove corresponding to the limiting protrusions is arranged on the connecting bracket 20. The initial elastic force of the elastic member 30 is 1.5 times the gravity of the rolling assembly 10. The rolling assembly 10 includes a connecting shaft 101 and a rotating block that are connected and matched. When the universal wheel passes through the gap between the floor or the tiles, the cover plate 40 is always in contact with the connecting member 50 under the elastic force of the spring, and the limiting protrusion is separated from the limiting groove, and the gap 60 between the cover plate 40 and the connecting bracket 20 remains unchanged, thereby avoiding the collision between the cover plate 40 and the connecting member 50 to generate noise, and at the same time improving the movement stability of the universal wheel assembly.

[0046] Specifically, the weight of the rolling assembly 10 includes the sum of the weights of the connecting shaft 101 , the mounting frame 103 , the universal wheel and the rotating shaft 105 .

[0047] In some embodiments, the axial length of the connecting shaft 101 is greater than the sum of the lengths of the connecting bracket 20 and the cover plate 40 .

[0048] Specifically, after one end of the connecting shaft 101 is connected to the mounting bracket 103 , the length of the portion protruding from the mounting bracket 103 is greater than the sum of the lengths of the connecting bracket 20 and the cover plate 40 .

[0049] Furthermore, if Figure 2 As shown, the connecting bracket 20, the elastic member 30 and the cover plate 40 are respectively and sequentially mounted on the connecting shaft 101, and the other end of the connecting shaft 101 can protrude from the cover plate 40, and then the connecting member 50 is connected to the other end of the connecting shaft 101. Under the action of the elastic force of the elastic member 30, the cover plate 40 and the connecting member 50 are abutted, and a gap 60 is formed between the cover plate 40 and the connecting bracket 20.

[0050] In the embodiment of the present application, the connecting bracket 20 is further provided with a connecting hole 202 , the connecting hole 202 is communicated with the accommodating portion 201 , and the aperture of the connecting hole 202 is smaller than the aperture of the accommodating portion 201 .

[0051] Specifically, the accommodating portion 201 may be an accommodating hole, the accommodating hole on the connecting bracket 20 and the connecting hole 202 are stepped holes, and the aperture of the connecting hole 202 is smaller than the aperture of the accommodating hole.

[0052] Specifically, the hole diameter of the connecting hole 202 matches the shaft diameter of the connecting shaft 101 .

[0053] like Figure 4 As shown, the connecting bracket 20 is provided with a receiving hole and a connecting hole 202, and the aperture of the receiving hole is larger than the aperture of the connecting hole 202. The connecting bracket 20 is sleeved on the connecting shaft 101 through the connecting hole 202, and the elastic member 30 is sleeved on the connecting shaft 101, and one end of the elastic member 30 abuts against the bottom wall of the receiving hole.

[0054] Furthermore, the other end of the connecting shaft 101 is provided with a connecting internal thread, the cover plate 40 is sleeved on the connecting shaft 101 and is threadedly connected to the connecting internal thread of the connecting shaft 101 through the connecting member 50, thereby limiting the axial movement of the cover plate 40.

[0055] In the embodiment of the present application, the rotating block further includes a mounting frame 103 and a rotating member 102 ; the rotating member 102 is rotatably connected to the mounting frame 103 ; and one end of the connecting shaft 101 is connected to the mounting frame 103 .

[0056] Specifically, one end of the connecting shaft 101 is vertically disposed on the mounting frame 103 , and the other end of the connecting shaft 101 is connected to the connecting member 50 .

[0057] In the embodiment of the present application, the rotating member 102 has a rotating body 104 and a rotating shaft 105 . The rotating body 104 is sleeved on the rotating shaft 105 , and the rotating body 104 is rotatably connected to the rotating shaft 105 . The rotating shaft 105 is fixed on the mounting frame 103 .

[0058] Specifically, the mounting frame 103 has a mounting space for the rotating member 102 .

[0059] The rotating body 104 can be a universal wheel, which is installed on the mounting frame 103 through the rotating shaft 105. The mounting frame 103 is provided with a threaded hole connected to the connecting shaft 101. One end of the connecting shaft 101 is provided with a connecting external thread, which is threadedly connected to the threaded hole of the mounting frame 103.

[0060] In the embodiment of the present application, at least one connecting portion 203 is provided on the connecting bracket 20, and the connecting portion 203 is used to connect the connecting bracket 20 to a preset position.

[0061] Specifically, at least one connecting ear is provided on the connecting bracket 20, and the connecting portion 203 is provided on the connecting ear. The connecting portion 203 may be an assembly hole, and the connecting bracket 20 may be connected to other components through the assembly hole.

[0062] In the embodiment of the present application, the connection portion 203 provides convenience for connecting the connection bracket 20 to other components.

[0063] An embodiment of the present application also provides a cleaning device, including a body and a universal wheel assembly as described above, wherein the universal wheel assembly is arranged at the bottom of the body.

[0064] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0065] It should be noted that all the features recorded in this application (including technical features recorded in different embodiments) can be combined arbitrarily under reasonable circumstances, and new technical solutions formed by the combination are all within the protection scope of this application.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A universal wheel assembly, characterized in that: The invention comprises a rolling assembly (10), a connecting bracket (20), an elastic member (30), a cover plate (40) and a connecting member (50); the elastic member (30) is arranged between the cover plate (40) and the connecting bracket (20); the initial elastic force of the elastic member (30) is greater than or equal to the gravity of the rolling assembly (10), so that a gap is formed between the cover plate (40) and the connecting bracket (20).

2. The universal wheel assembly according to claim 1, characterized in that: The rolling assembly (10) comprises a connecting shaft (101) and a rotating block, the connecting bracket (20), the elastic member (30) and the cover plate (40) are respectively sleeved on the connecting shaft (101), one end of the connecting shaft (101) is connected to the connecting member (50), and the other end of the connecting shaft (101) is connected to the rotating block.

3. The universal wheel assembly according to claim 1, characterized in that: One of the cover plate (40) and the connecting bracket (20) is provided with a first limiting structure (401), and the other is provided with a second limiting structure (402); the first limiting structure (401) and the second limiting structure (402) are limitedly matched to limit the relative rotation between the cover plate (40) and the connecting bracket (20).

4. The universal wheel assembly according to claim 2, characterized in that: The axial length of the connecting shaft (101) is greater than the sum of the lengths of the connecting bracket (20) and the cover plate (40).

5. The universal wheel assembly according to claim 1, characterized in that: The connecting bracket (20) is provided with a receiving portion (201), and the elastic member (30) is at least partially received in the receiving portion (201).

6. The universal wheel assembly according to claim 5, characterized in that: The connecting bracket (20) is also provided with a connecting hole (202), the connecting hole (202) is connected to the accommodating portion (201), and the hole diameter of the connecting hole (202) is smaller than the hole diameter of the accommodating portion (201).

7. The universal wheel assembly according to claim 2, characterized in that: The rotating block further comprises a mounting frame (103) and a rotating member (102); the rotating member (102) is rotatably connected to the mounting frame (103); and one end of the connecting shaft (101) is connected to the mounting frame (103).

8. The universal wheel assembly according to claim 7, characterized in that: The rotating member (102) comprises a rotating body (104) and a rotating shaft (105); the rotating body (104) is sleeved on the rotating shaft (105); the rotating body (104) is rotatably connected to the rotating shaft (105); and the rotating shaft (105) is fixed on the mounting frame (103).

9. The universal wheel assembly according to any one of claims 1 to 8, characterized in that: At least one connecting portion (203) is provided on the connecting bracket (20), and the connecting portion (203) is used to connect the connecting bracket (20) to a preset position.

10. A cleaning device, characterized in that: The invention comprises the universal wheel assembly according to any one of claims 1 to 9, wherein the universal wheel assembly is arranged at the bottom of the cleaning device.

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