Motor housing and vacuum cleaner

Abstract

Disclosed in the present utility model are a motor housing and a vacuum cleaner. The motor housing comprises a motor chamber formed inside the motor housing, and a slot formed in the top side of the motor housing and used for containing a filter component; the slot is provided with a motor chamber air feeding area and a support structure located around the motor chamber air feeding area; the filter component is located on the support structure; the support structure comprises a plurality of raised parts; and the raised parts are located on the bottom wall of the slot and arranged in a direction surrounding the motor chamber air feeding area and a direction away from the motor chamber air feeding area, so as to ensure that an airflow channel is provided between any two adjacent raised parts. The motor housing and the vacuum cleaner provided with the motor housing which are provided in the present utility model can solve the problem of unbalanced air intake at motor chamber air feeding areas.

Description

Motor housing and vacuum cleaner Technical Field

[0001] The utility model relates to the technical field of cleaning device design and manufacturing, in particular to a motor housing and a dust collector provided with the motor housing. Background Art

[0002] An upright vacuum cleaner with a dust cup is a unique design with the dust cup located on top of the body. These vacuums are typically larger and have a higher capacity than traditional handheld vacuums, allowing them to remove dust and dirt for longer, with stronger suction and a higher cleaning effect.

[0003] In an upright vacuum cleaner with a dust cup, the dust cup is removably mounted on the body, and the motor is mounted inside the housing of the body. A motor housing is located above the motor, and the housing has a groove in which the filter cotton is located. Furthermore, a motor chamber air inlet area corresponding to the position of the motor air inlet is located at the bottom of the groove in the motor housing. A plurality of arcuate strip ribs are radially arranged outward from the motor chamber air inlet area, centered on the motor chamber air inlet area. One end of each rib extends to the location of the motor chamber air inlet area, and the other end is adjacent to the side wall of the groove. This rib supports the filter cotton, and air circulation channels are formed between adjacent ribs.

[0004] However, since the motor is not placed in the center of the fuselage, the width and length of different air circulation channels vary, resulting in uneven air intake in the above-mentioned air intake area, affecting the performance of the entire machine. Utility Model Content

[0005] In view of this, the present invention provides a motor housing and a vacuum cleaner provided with the motor housing, which can avoid the problem of uneven air intake in the air inlet area of ​​the motor chamber.

[0006] A motor housing comprises a motor chamber formed within the motor housing, a recess formed on the top side of the motor housing for accommodating a filter element, the recess defining an air inlet area for the motor chamber, and a support structure surrounding the air inlet area, the filter element being seated on the support structure. The support structure comprises a plurality of protrusions located on a bottom wall of the recess and arranged in a direction surrounding the air inlet area of ​​the motor chamber and in a direction away from the air inlet area of ​​the motor chamber, thereby ensuring that an air flow path is provided between any two adjacent protrusions.

[0007] Optionally, in the above-mentioned motor housing, the multiple protrusions are arranged in multiple radial straight lines or curved lines with the motor chamber air inlet area as the center; and in the same radial straight line or curved line direction, there is a gap between adjacent protrusions.

[0008] Optionally, in the motor housing, the gap between adjacent protrusions in any radial straight line or curved direction, and at least one protrusion in the adjacent radial straight line or curved direction, are located on the same circular trajectory with the motor chamber air inlet area as the center.

[0009] and / or,

[0010] At least one of the protrusions in any radial straight line or curved direction and at least one of the protrusions in the adjacent radial straight line or curved direction are located on the same circular trajectory with the motor room air inlet area as the center.

[0011] Optionally, in the above motor housing, the maximum length dimension of each protrusion in the radial straight line direction is a, and the maximum width dimension in the tangential direction perpendicular to the radial straight line direction is b, and b<a.

[0012] Optionally, in the above motor housing, the width dimension of each protrusion or its main body at the end away from the motor chamber air inlet area is b1, and the width dimension at the end close to the motor chamber air inlet area is b2, and b2<b1.

[0013] Optionally, in the above-mentioned motor housing, the end of each protrusion away from the air inlet area of ​​the motor chamber is an outer end, and the width dimension of the outer end gradually increases in a direction approaching the air inlet area of ​​the motor chamber, and the maximum value thereof is equal to the width dimension of the main body of the protrusion or the maximum value b of the width dimension of the main body;

[0014] The end of each protrusion close to the air inlet area of ​​the motor room is the inner end, and the width dimension of the inner end gradually increases in the direction away from the air inlet area of ​​the motor room, and its maximum value is equal to the width dimension of the main body of the protrusion or the minimum value b2 of the width dimension of the main body.

[0015] Optionally, in the above motor housing, the cross-sectional shape of each protrusion is circular, elliptical or polygonal.

[0016] Optionally, the above-mentioned motor housing further includes a shielding member, which is located on one side of the air inlet area of ​​the motor room, and a plurality of protrusions are arranged at intervals along the circumference of the shielding member between the side of the shielding member and the bottom wall to divide the air inlet area of ​​the motor room into a plurality of motor room air inlets.

[0017] Optionally, in the above-mentioned motor housing, the bottom surface of the shielding member is in the shape of an inverted cone, and the bottom endpoint of the inverted cone-shaped shielding member is located above the air inlet area of ​​the motor room, or extends into the air inlet area of ​​the motor room.

[0018] A vacuum cleaner comprises the motor housing described above.

[0019] Compared to the prior art, the motor housing and vacuum cleaner equipped with the motor housing provided by the present invention eliminate the arc-shaped strip rib structure radiating outward from the motor chamber entrance within the groove of the motor housing, replacing it with a plurality of dispersed protrusions. These protrusions support the filter element and also maintain a gap between the filter element and the bottom wall of the groove, forming an interlaced and interconnected air flow space. Because there is a gap between radially adjacent, circumferentially adjacent, or adjacent protrusions in any other direction to allow air to pass through, no fixed airflow channel is formed, allowing free air intake and diversion in multiple directions, thereby achieving balanced air intake at the air inlet area of ​​the motor chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] FIG1 is an exploded view of some parts of a vacuum cleaner in a specific embodiment of the present invention.

[0022] FIG2 is a top view of a motor housing in a specific embodiment provided by the present invention.

[0023] FIG3 is an axonometric view of a motor housing in a specific embodiment provided by the present invention.

[0024] FIG4 is a top view of a motor housing in another specific embodiment provided by the present invention.

[0025] 5 to 10 are schematic diagrams of the cross-sectional shapes of protrusions in several different embodiments provided by the present invention.

[0026] in:

[0027] 1-Filter, 2-Motor housing, 3-Body housing, 4-Motor,

[0028] 21- bottom wall, 22- side wall, 31- air outlet, 41- motor air inlet,

[0029] 211-motor room air inlet area, 212-protrusion, 213-gap, 214-shielding piece,

[0030] 221-air vent, 2110-motor room air inlet,

[0031] 2120-main body, 2121-outer end, 2122-inner end. DETAILED DESCRIPTION

[0032] The utility model provides a motor housing and a vacuum cleaner provided with the motor housing. The air flow channels connected to each other are formed by a plurality of protrusions to ensure balanced air intake at the entrance of the motor chamber.

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Referring to Figures 1 to 4, a specific embodiment of the present invention provides a vacuum cleaner, which includes a motor 4, a filter element 1, and a motor housing 2. The motor housing 2 includes a motor chamber formed inside the motor housing 2 for accommodating the motor 4, and a groove formed on the top side of the motor housing 2 for accommodating the filter element 1; the groove is provided with a motor chamber air inlet area 211 connected to the motor chamber, and a support structure located around the motor chamber air inlet area 211, and the filter element 1 is located on the support structure. The support structure includes a plurality of protrusions 212, and the plurality of protrusions 212 are fixedly connected to the bottom wall 21 of the groove and are arranged in a direction around the motor chamber air inlet area 211 and in a direction away from the motor chamber air inlet area 211 to ensure that an air flow channel can be formed between any two adjacent protrusions 212.

[0035] It should be noted here that, the "multiple protrusions 212 are arranged along the direction surrounding the motor room air inlet area 211 and in the direction away from the motor room air inlet area 211" mentioned in this paragraph means that: the multiple protrusions 212 are all located radially outside the motor room air inlet area 211, and are scattered at different positions around the motor room air inlet area 211. The surrounding method can be to arrange the protrusions 212 in sequence along a spiral trajectory while surrounding the motor room air inlet area 211 and away from the motor room air inlet area 211, or to arrange the multiple protrusions 212 in multiple annular arrays with the motor room air inlet area 211 as the center and gradually away from the motor room air inlet area 211. The protrusions 212 in adjacent annular arrays can be staggered (as shown in FIG. 2 ) or correspond one to one in the radial direction (as shown in FIG. 4 ). It can be understood that whether arranging multiple protrusions 212 along a spiral trajectory or arranging multiple protrusions 212 in multiple annular arrays is a rule. Due to the eccentric setting of the motor room air inlet area 211 or other factors, the multiple protrusions 212 finally set in the groove at least partially conform to the rule, but it does not exclude the fact that no protrusions 212 are set in some areas or individual positions, nor does it exclude the fact that protrusions 212 that do not conform to the above rule are added in individual positions.

[0036] As can be seen, the groove of the motor housing 2 provided by the present invention eliminates the arcuate strip-shaped rib structure radiating outward from the motor chamber entrance and is replaced with a plurality of dispersed protrusions 212. These protrusions 212 support the filter element 1 while also maintaining a gap between the filter element 1 and the bottom wall of the groove, forming an interlaced and interconnected air flow space. Because there is a gap between radially adjacent, circumferentially adjacent, or adjacent protrusions 212 in any other direction to allow air to pass through, no fixed airflow channel is formed, allowing for free air intake and diversion in multiple directions, thereby achieving balanced air intake at the motor chamber air inlet area 211.

[0037] During the operation of the vacuum cleaner, the inhaled airflow is filtered by the filter element 1, then enters the airflow space formed by the gaps between the multiple protrusions 212, and then passes through the motor chamber air inlet area 211 to the motor air inlet 41 of the motor 4 located in the motor chamber, enters the motor cavity, and is then discharged from the air outlet 31 of the motor housing. At this time, the flow trajectory of the airflow in the groove can be seen in the arrow direction in Figures 2 and 4, where the thick arrows represent the main air path and the thin arrows represent diversion. It can be seen that in the airflow space formed by the multiple protrusions 212, multiple airflow paths are connected to each other, allowing diversion, thereby ensuring balanced air intake at the motor chamber air inlet area 211.

[0038] In some embodiments, the protrusions 212 do not contact the side walls of the groove. Furthermore, an air vent 221 is provided on the side walls of the groove, and an air vent valve is built into the groove and docked with the air vent 221. Thus, when the main air duct of the vacuum cleaner becomes blocked, for example, the filter element 1 becomes hardened or aged due to long-term use, the air intake volume decreases, or the vacuum cleaner inhales relatively large foreign objects and becomes unable to work during operation, the air flow space formed between the filter element 1 and the bottom wall of the groove will generate negative pressure. At this time, the air vent valve on the side wall of the motor opens, and air enters the air flow space formed by the filter element 1 and the bottom wall of the groove and is discharged through the air vent 221, thereby avoiding the risk of the motor burning out due to overheating.

[0039] Please refer to Figure 2. In some embodiments, the above-mentioned multiple protrusions 212 are arranged respectively on multiple radial straight lines or curved directions L with the motor room air inlet area 211 as the center; and, on the same radial straight line or curved direction L, there is a gap between adjacent protrusions 212, so that multiple air flow paths are connected to each other, ensuring balanced air intake at the motor room air inlet area 211.

[0040] The gaps 213 between adjacent protrusions 212 along any radial line or curvilinear direction L and at least one protrusion 212 along the adjacent radial line or curvilinear direction L are located on the same circular trajectory M centered on the motor room air inlet area 211. In other words, the multiple protrusions 212 in FIG. 2 are arranged in a "staggered, divergent pattern." Alternatively, in other embodiments, at least one protrusion 212 along any radial line or curvilinear direction L and at least one protrusion 212 along the adjacent radial line or curvilinear direction L may be located on the same circular trajectory M centered on the motor room air inlet area 211. For details, see FIG. 4 .

[0041] In some embodiments, the maximum length of each protrusion 212 in the radial direction L is a, and the maximum width in the tangential direction perpendicular to the radial direction L is b, where b<a. That is, each protrusion 212 is a short, strip-shaped structure, thereby providing a certain degree of airflow guidance.

[0042] Furthermore, in some embodiments, each protrusion 212 or its main body 2120 has a width b1 at the end away from the motor chamber air inlet area 211 and a width b2 at the end closer to the motor chamber air inlet area 211, where b2 < b1. In other words, the cross-sectional shape of the protrusion 212 can be a raindrop, a teardrop, a trapezoid, a triangle, or other structure that tapers in width along the airflow direction. For details, see Figures 5, 6, and 8. Protrusions 212 of this shape guide airflow, helping to reduce airflow resistance and lower noise.

[0043] In some embodiments, the end of each protrusion 212 away from the motor chamber air inlet area 211 is an outer end 2121. The width of the outer end 2121 gradually increases as it approaches the motor chamber air inlet area 211, with its maximum value equal to the width of the main body 2120 of the protrusion 212 or the maximum value b of the width of the main body 2120. The end of each protrusion 212 closer to the motor chamber air inlet area 211 is an inner end 2122. The width of the inner end 2122 gradually increases as it moves away from the motor chamber air inlet area 211, with its maximum value equal to the width of the main body 2120 of the protrusion 212 or the minimum value b2 of the width of the main body 2120. For details, see Figures 5, 6, 7, and 9. The pointed end of the protrusion 212 facilitates airflow guidance and avoids turbulence. Figures 5 and 6 represent preferred embodiments.

[0044] However, it is not limited thereto. In other embodiments, the cross-sectional shape of each protrusion 212 may be set to be circular, elliptical, or other polygonal.

[0045] In some embodiments, a shielding member 214 is located on one side of the motor room air inlet area 211. A plurality of protrusions 212 are arranged circumferentially between the side of the shielding member 214 and the bottom wall 21, thereby dividing the motor room air inlet area 211 into a plurality of motor room air inlets 2110. Furthermore, the bottom surface of the shielding member 214 is in an inverted cone shape, with the bottom endpoint of the inverted cone-shaped shielding member 214 located above the motor room air inlet area 211 or extending into the motor room air inlet area 211. That is, the shielding member 1 is a conical structure, inverted above the motor air inlet 41, and serves as a guide for the plurality of motor room air inlets 2110. For details, see FIG. 1 . The shielding member 1 is connected to the plurality of protrusions 212 around the motor room entrance 211 to form the plurality of motor room air inlets 2110. The shielding member 1 can guide the airflow filtered by the filter element 1 to the motor chamber air inlet area 211, and then guide it into the motor air inlet 41 through the inverted conical bottom of the shielding member 214. The shielding member 1 can also prevent human fingers or foreign objects from entering the motor air inlet, thereby protecting the motor.

[0046] The motor housing 2 provided by the present invention can be used in a vacuum cleaner. As shown in FIG1 , the vacuum cleaner includes a motor 4 and a filter element 1, as well as the motor housing 2 described above. The filter element 1 is located in a groove of the motor housing 2 and is seated on a support structure formed by a plurality of protrusions 212. The motor 4 is located in the motor chamber of the motor housing 2, below the groove. During operation of the vacuum cleaner, the airflow sucked in passes through the filter element 1, the gaps between the plurality of protrusions 212, and the air inlet area 211 of the motor chamber, and then enters the motor 4 located in the motor chamber, and is finally discharged through the air outlet 31 on the side wall of the motor chamber.

[0047] It should be noted that the motor housing 2 provided by the present invention can be used in upright dust cup vacuum cleaners, other types of vacuum cleaners, and any other equipment that requires air guidance.

[0048] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed.

[0049] 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.

[0050] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motor housing, comprising a motor chamber formed inside the motor housing, a groove formed on the top side of the motor housing for accommodating a filter element (1), the groove being provided with a motor chamber air inlet area (211) communicating with the motor chamber and a support structure located around the motor chamber air inlet area (211), the filter element (1) being seated on the support structure, characterized in that: The support structure includes a plurality of protrusions (212), the plurality of protrusions (212) being located on the bottom wall (21) of the groove and arranged along a direction around the motor chamber air inlet area (211) and a direction away from the motor chamber air inlet area (211) to ensure that an air flow channel is provided between any two adjacent protrusions (212).

2. The motor housing according to claim 1, characterized in that: The plurality of protrusions (212) are respectively arranged in a plurality of radial straight lines or curved directions (L) with the motor chamber air inlet area (211) as the center; and, in the same radial straight line or curved direction (L), there is a gap between adjacent protrusions (212).

3. The motor housing according to claim 2, characterized in that, The gap (213) between adjacent protrusions (212) in any one of the radial straight lines or curved directions (L), and at least one of the protrusions (212) in the adjacent radial straight line or curved direction (L), are located on the same circumferential locus (M) with the motor chamber air inlet area (211) as the center; and / or, At least one of the protrusions (212) in any one of the radial straight lines or curved directions (L), and at least one of the protrusions (212) in the adjacent radial straight line or curved direction (L), are located on the same circumferential locus (M) with the motor chamber air inlet area (211) as the center.

4. The motor housing according to claim 1, characterized in that, The maximum value of the length dimension of each protrusion (212) in the radial straight line direction (L) is a, and the maximum value of the width dimension in the tangential direction perpendicular to the radial straight line direction (L) is b, and b < a.

5. The motor housing according to claim 4, characterized in that, The width dimension of one end of each protrusion (212) or its main body (2120) away from the motor chamber air inlet area (211) is b1, and the width dimension of one end close to the motor chamber air inlet area (211) is b2, and b2 < b1.

6. The motor housing according to claim 4, characterized in that One end of each protrusion (212) away from the motor chamber air inlet area (211) is an outer end (2121), and the width dimension of the outer end (2121) gradually increases along the direction close to the motor chamber air inlet area (211), and its maximum value is equal to the width dimension of the main body (2120) of the protrusion (212) or the maximum value b of the width dimension of the main body (2120). One end of each of the protrusions (212) close to the air inlet area (211) of the motor chamber is the inner end (2122), and the width dimension of the inner end (2122) gradually increases in a direction away from the air inlet area (211) of the motor chamber, and its maximum value is equal to the width dimension of the main body (2120) of the protrusion (212) or the minimum value b2 of the width dimension of the main body (2120).

7. The motor housing according to claim 1, characterized in that, The cross-sectional shape of each of the protrusions (212) is circular, elliptical or polygonal.

8. The motor housing according to any one of claims 1 to 7, characterized in that, It further includes a shielding member (214): The shielding member (214) is located on one side of the air inlet area (211) of the motor chamber, and a plurality of the protrusions (212) are arranged at intervals along the circumferential direction between the side edge of the shielding member (214) and the bottom wall (21) to divide the air inlet area (211) of the motor chamber into a plurality of air inlets (2110) of the motor chamber.

9. The motor housing according to claim 8, characterized in that, The bottom surface of the shielding member (214) is an inverted cone, and the bottom end point of the inverted cone-shaped shielding member (214) is located above the air inlet area (211) of the motor chamber or extends into the air inlet area (211) of the motor chamber.

10. A vacuum cleaner, characterized in that, It includes the motor housing (2) according to any one of claims 1 to 9.

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