CN216278657U - Air supply device and electric product - Google Patents

Abstract

The utility model provides an air supply device and an electric product. The air supply device comprises: a fan having a case having a main body and a protrusion, wherein the protrusion is disposed on a first surface of the main body in a first direction, extending from the first surface in the first direction; a housing provided on one side of the main body of the housing in the first direction and having a through hole through which the protruding portion passes; and an engaging portion provided on one side of the housing in the first direction and engaged with the protruding portion.

Description

Air supply device and electric product

Technical Field

The utility model relates to the technical field of air supply, in particular to an air supply device and an electric product.

Background

With the development of science and technology, the application field of the air supply device is more and more extensive, for example, the air supply device can be applied to the fields of consumer electronics, computers, refrigeration equipment, automobiles and the like. In the related art, a blower device is provided with a fan and a casing having an air duct formed therein, and the fan is usually fixed to the casing by means of screws or the like.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the utility model.

SUMMERY OF THE UTILITY MODEL

The inventor finds that when the relative position of the fan and the housing is fixed by screws, the screws are easy to loosen along with the rotation of the fan, and the fan cannot be reliably fixed; the fan cannot be conveniently mounted or dismounted because the screws need to be screwed or unscrewed by using a special tool; in addition, a part for passing or fixing a screw is generally required to be provided on the outer periphery of the fan, which results in that, on one hand, a large amount of material is required to be used in the manufacturing process of the fan, and on the other hand, the fan cannot be miniaturized.

In order to solve at least one of the above problems or other similar problems, embodiments of the present invention provide an air supply device, in which a fan in the air supply device can be easily assembled or disassembled, and the fan can be reliably fixed.

According to a first aspect of an embodiment of the present invention, there is provided an air blowing device, including: a fan having a case having a main body and a protrusion, wherein the protrusion is disposed on a first surface of the main body in a first direction, extending from the first surface in the first direction; a housing provided on one side of the main body of the housing in the first direction and having a through hole through which the protruding portion passes; and an engaging portion provided on one side of the housing in the first direction and engaged with the protruding portion.

According to a second aspect of an embodiment of the present invention, there is provided an air blowing device as set forth in the first aspect, wherein the protruding portion has: a base having one end fixed to the first surface of the main body portion of the cabinet; a head portion located on one side of the base portion in the first direction and engaged with the engaging portion; and a connecting portion connecting the base portion and the head portion.

According to a third aspect of embodiments of the present invention, there is provided the air blowing device as defined in the second aspect, wherein one end of the connecting portion is connected to at least a part of the other end of the base portion, and the other end of the connecting portion is connected to a part of a surface of the head portion in a second direction opposite to the first direction and/or is connected to a part of a side surface of the head portion.

According to a fourth aspect of the embodiments of the present invention, there is provided the air blowing device as defined in the third aspect, wherein the connecting portion includes first and second leg portions that are columnar and spaced apart from each other, one end of the first leg portion and one end of the second leg portion are connected to the other end of the base portion, the head portion is provided between the other end of the first leg portion and the other end of the second leg portion, and the first and second leg portions are connected to a part of the side surface of the head portion.

According to a fifth aspect of the embodiments of the present invention, there is provided the air blowing device as defined in the third or fourth aspect, wherein the connection portion includes a third leg portion, one end of which is connected to at least a part of the other end of the base portion, the other end of which is connected to a part of the surface of the head portion in the second direction, and a dimension of the other end of which in a direction perpendicular to the first direction is smaller than a dimension of the head portion in a direction perpendicular to the first direction.

According to a sixth aspect of the present invention, there is provided the blower device according to the second aspect, wherein the engaging portion includes: a bottom; a wall portion extending from the bottom portion in a second direction opposite to the first direction; and a boss portion provided on an inner surface of the wall portion, protruding from the inner surface of the wall portion, a surface of the boss portion in the first direction abutting against a surface of the head portion in the second direction.

According to a seventh aspect of the embodiments of the present invention, there is provided the air blowing device as defined in the sixth aspect, wherein the thickness of the projection portion in the protruding direction gradually increases along the first direction.

According to an eighth aspect of the embodiments of the present invention, there is provided the air blowing device as defined in the sixth aspect, wherein an end portion of the wall portion in the second direction is provided with a chamfer, and an inner surface of the wall portion is inclined outward along the second direction.

According to a ninth aspect of an embodiment of the present invention, there is provided the blower device as defined in the first aspect, wherein a recess recessed in the first direction is provided on the surface of the housing in the second direction, the through hole is provided in the recess, and when the engaging portion engages with the protruding portion, an end of the engaging portion in the first direction is positioned in the recess.

According to a tenth aspect of the embodiments of the present invention, there is provided the air blowing device as defined in the first aspect, wherein the casing further includes a gasket disposed between the main body portion of the casing and the housing.

According to an eleventh aspect of embodiments of the present invention, there is provided an electric appliance, wherein the electric appliance includes the air blowing device of any one of the first to tenth aspects.

One of the beneficial effects of the embodiment of the utility model is as follows: the fan in the air supply device can be conveniently assembled or disassembled, and the fan can be reliably fixed.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not so limited in scope. The embodiments of the utility model include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic view of an air blowing device of embodiment 1 of the present invention;

fig. 2 is another schematic view of an air blowing device of embodiment 1 of the present invention;

FIG. 3 is a schematic view of an air blower apparatus of embodiment 1 of the present invention, with the stator, rotor, etc. of the fan removed;

FIG. 4 is an exploded view of the blower apparatus shown in FIG. 3;

FIG. 5 is an enlarged schematic view of the components shown in phantom circle B in FIG. 4;

fig. 6 is another schematic view of an air blowing device of embodiment 1 of the present invention;

FIG. 7 is a cross-sectional view taken along section line A-A' in FIG. 6;

FIG. 8 is an enlarged schematic view of components within the dashed box of FIG. 7;

FIG. 9 is a cross-sectional view taken along section line B-B' in FIG. 6;

FIG. 10 is an enlarged schematic view of components within the dashed box of FIG. 9;

fig. 11 is another sectional view as viewed along a section line B-B' in fig. 6.

Detailed Description

The foregoing and other features of the utility model will become apparent from the following description taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the utility model have been disclosed in detail as being indicative of some of the embodiments in which the principles of the utility model may be employed, it being understood that the utility model is not limited to the embodiments described, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.

In the drawings used in the following description, the components are sized to be recognizable on the drawing surface, and therefore the scale is different for each component, and the present invention is not limited to the number of components, the shapes of components, the size ratios of components, and the relative positional relationships of components described in the drawings.

In the embodiments of the present invention, the terms "first", "second", and the like are used for distinguishing different elements by name, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.

In embodiments of the utility model, the singular forms "a", "an", and the like include the plural forms and are to be construed broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.

Example 1

An air supply device is provided in an embodiment of the present invention, fig. 1 is a schematic view of the air supply device in embodiment 1 of the present invention, and fig. 2 is another schematic view of the air supply device in embodiment 1 of the present invention. Fig. 1 is a schematic view of the air blowing device as viewed from a side where the fan is mounted, and fig. 2 is a schematic view of the air blowing device as viewed from a direction opposite to the viewing direction shown in fig. 1. As shown in fig. 1 and 2, the air blowing device 1 includes: fan 11, housing 12, and engaging portion 13.

Fig. 3 is a schematic view of the air blowing device 1 of embodiment 1 of the present invention with components such as a stator and a rotor of the fan 11 removed, the direction of view of fig. 3 is the same as that of fig. 1, and fig. 4 is an exploded view of the air blowing device 1 shown in fig. 3. As shown in fig. 3 and 4, the fan 11 has a housing 111, and the housing 111 has a main body portion 1111 and a protruding portion 1112. The protrusion 1112 is provided on a first surface a of the body portion 1111 in the first direction, and extends from the first surface a along the first direction. The housing 12 is provided on one side of the main body 1111 of the housing 111 in the first direction, and has a through hole 121 through which the protruding portion 1112 passes. The engaging portion 13 is provided on one side of the housing 12 in the first direction, and engages with the protruding portion 1112.

According to the above embodiment, the fan 11 and the engaging portion 13 are provided on both sides of the housing 12, and the protruding portion 1112 of the casing 111 of the fan 11 is inserted through the through hole 121 of the housing 12 and engaged with the engaging portion 13, whereby the fan 11 can be assembled to the housing 12. Since the relative positional relationship between the fan 11 and the housing 12 is fixed by the engagement, the fan can be reliably fixed without loosening screws as compared with the screw fixing method; the fan does not need to be installed or disassembled by a special tool, and the operation is convenient. Further, it is not necessary to provide a member through which screws are passed or fixed on the outer periphery of the fan 11, and therefore, the material required in the manufacturing process of the fan 11 can be saved and the fan 11 can be miniaturized.

In at least one embodiment, as shown in fig. 4, the first direction may be a direction directed from the body portion 1111 of the cabinet 111 of the fan 11 to the case 12, and the second direction may be a direction directed from the case 12 to the body portion 1111 of the cabinet 111 of the fan 11.

In at least one embodiment, the fan 11 can include a stator, a rotor, and a casing 111, and the casing 111 can include a body portion 1111 and a protrusion 1112. Here, the stator and the rotor may be installed on the surface of the second direction of the body portion 1111 of the housing 111, and the protrusion portion 1112 may be fixed on the surface of the first direction of the body portion 1111. However, the strength of the protrusion 1112 may be increased by integrally molding the protrusion 1112 with the main body 1111, or the protrusion 1112 may be attached to the main body 1111, so that the protrusion 1112 can be easily replaced when the protrusion 1112 is damaged.

In at least one embodiment, the number of protrusions 1112 can be 3 or more. This enables fan 11 to be reliably fixed to casing 12. The number of through holes 121 through which the protrusions 1112 pass and the number of engaging portions 13 that engage with the protrusions 1112 in the housing 12 may be the same as the number of protrusions 1112. For example, as shown in fig. 4, the number of the protrusions 1112, the number of the through holes 121, and the number of the engagement portions 13 are all 4.

In at least one embodiment, the structure of the plurality of protrusions 1112 can be identical. The engaging portion 13 that engages with the plurality of protrusions 1112 may have the same configuration. This can reduce the manufacturing cost of the blower 1. However, the present invention is not limited to this, and the plurality of protrusions 1112 may not have the same structure, or the plurality of engagement portions 13 may not have the same structure.

In at least one embodiment, the protrusions 1112 may be arranged at equal intervals in the circumferential direction of the main body portion 1111. This enables fan 11 to be more reliably fixed to casing 12. However, the present application is not limited to this, and the protrusions 1112 may be disposed at unequal intervals in the circumferential direction of the main body portion 1111.

Fig. 5 is an enlarged schematic view of the components shown in dashed circle B in fig. 4. In at least one embodiment, as shown in fig. 5, the protrusion 1112 has: a base 21, a head 22 and a connecting portion 23. Wherein one end (one end in the second direction) of the base 21 is fixed on the first surface a of the main body portion 1111. The head 22 is positioned on one side of the base 21 in the first direction and engages with the engaging portion 13. The connecting portion 23 connects the base portion 21 and the head portion 22.

In some embodiments, the base 21, the head 22, and the connecting portion 23 of the protrusion 1112 may be integrally formed, thereby enabling to improve the strength of the protrusion 1112. However, the present application is not limited thereto, and the base 21, the head 22, and the connecting portion 23 may be assembled together.

In at least one embodiment, one end (one end in the second direction) of the connecting portion 23 is connected to at least a part of the other end (one end in the first direction) of the base portion 21. The other end (one end in the first direction) of the connection portion 23 is connected to a part of the surface C in the second direction of the head portion 22, or the other end (one end in the first direction) of the connection portion 23 is connected to a part of the side surface D of the head portion 22, or the other end (one end in the first direction) of the connection portion 23 is connected to a part of the surface C in the second direction of the head portion 22 and is connected to a part of the side surface D of the head portion 22.

As shown in fig. 5, one end of the connecting portion 23 in the second direction is connected to a part of the end of the base portion 21 in the first direction, and the end of the connecting portion 23 in the first direction is connected to a part of the side surface of the head portion 22. For example, the connecting portion 23 includes first and second leg portions 231 and 232 that are columnar and spaced apart from each other. One end (one end in the second direction) of the first leg 231 and one end (one end in the second direction) of the second leg 232 are connected to the other end (one end in the first direction) of the base 21, the head 22 is provided between the other end (one end in the first direction) of the first leg 231 and the other end (one end in the first direction) of the second leg 232, and the first leg 231 and the second leg 232 are connected to part of the side surfaces of the head 22.

In at least one embodiment, as shown in fig. 5, a gap E is provided between the surface C of the head portion 22 in the second direction and the end surface of the other end (one end in the first direction) of the base portion 21. This allows the surface C of the head 22 in the second direction to be exposed, and the head can be engaged with the engaging portion 13.

Fig. 6 is another schematic view of air blowing device 1 according to embodiment 1 of the present invention, fig. 7 is a sectional view taken along a sectional line a-a' in fig. 6, and fig. 8 is an enlarged schematic view of parts in a dashed frame in fig. 7.

In some embodiments, as shown in fig. 8, an end face F of the other end (one end in the first direction) of the first leg 231 and an end face G of the other end (one end in the first direction) of the second leg 232 are located closer to the first direction than the surface H of the head 22 in the first direction. This allows the engagement portion 13 to be restricted in a third direction perpendicular to the first direction.

In some embodiments, as shown in fig. 8, the first-direction surface J of the engaging portion 13 is flush with the end surface F of the first leg 231 and the end surface G of the second leg 232. This can avoid interference between the engaging portion 13 and another member.

However, the present application is not limited thereto, and in some embodiments, the end of the connection portion 23 in the first direction may be connected with a portion of the surface C of the head portion 22 in the second direction. For example, the connection portion 23 may include a third leg portion (not shown), one end (end in the second direction) of which is connected to at least a portion of the other end (end in the first direction) of the base portion 21, and the other end (end in the first direction) of which is connected to a portion of the surface C in the second direction of the head portion 22. That is, the other end (end in the first direction) of the third leg portion has a dimension in the direction perpendicular to the first direction smaller than the dimension of the head portion 22 in the direction perpendicular to the first direction. Accordingly, even when the connection portion 23 is connected to the surface C of the head portion 22, a part of the surface C of the head portion 22 can be exposed and can be engaged with the engagement portion 13.

However, the present application is not limited thereto, and in some embodiments, the connection portion 23 may also be provided with the first leg 231, the second leg 232, and the third leg at the same time. Thus, the connection portion may be connected with a portion of the second-direction surface C of the head portion 22 and with a portion of the side surface D of the head portion 22. This can improve the strength of the protrusion 1112.

In some embodiments, as shown in fig. 8, the base 21 of the protrusion 1112 may be located in the through hole 121. Since the base 21 is fixed to the main body 1111 of the housing 111 and has a strength higher than that of the other portions of the protrusion 1112, the fan 11 can be reliably restrained in the direction perpendicular to the first direction by the through-hole 121 by placing the base 21 in the through-hole 121.

In some embodiments, the height of the base 21 in the first direction is greater than or equal to the height of the through hole 121 in the first direction. This allows the base 21 to penetrate the entire range of the through hole 121 in the first direction. By inserting the base portion 21 through the entire range of the through hole 121, the fan 11 can be more reliably restrained.

In some embodiments, the dimension of the through-hole 121 in the direction perpendicular to the first direction is larger than the dimension of the base 21 in the direction perpendicular to the first direction. This allows the base 21 to pass through the through-hole 121 smoothly. Alternatively, the dimension of the through-hole 121 in the direction perpendicular to the first direction may be equal to the dimension of the base 21 in the direction perpendicular to the first direction. This allows the base 21 to be inserted through the through-hole 121, and the outer peripheral surface of the base 21 to be in contact with the inner peripheral surface of the through-hole 121, thereby more reliably restricting the fan 11.

In some embodiments, the range of the projection of the head portion 22 and the connection portion 23 in the first direction is included in the range of the projection of the through hole 121 in the first direction. This allows the protrusion 1112 to be smoothly inserted into and removed from the through hole 121, thereby smoothly inserting and removing the protrusion 1112.

Fig. 9 is a sectional view as viewed along a sectional line B-B' in fig. 6, and fig. 10 is an enlarged one of schematic views of parts in a dashed frame in fig. 9.

In some embodiments, as shown in fig. 10, the engaging portion 13 has: a bottom 131, a wall 132, and a boss 133. Wherein the wall portion 132 extends from the bottom portion 131 in a second direction opposite to the first direction. The protrusion 133 is provided on the inner surface of the wall portion 132, protrudes from the inner surface of the wall portion 132, and a surface K in the first direction of the protrusion 133 abuts against a surface C in the second direction of the head portion 22 of the protrusion 1112. This allows the engagement portion 13 to engage with the protrusion 1112, thereby fixing the relative positional relationship between the fan 11 and the housing 12.

In some embodiments, as shown in fig. 10, the thickness of the protrusion 133 in the protruding direction gradually increases along the first direction. Thereby, the surface K in the first direction can be formed, and the strength of the convex portion 133 can be improved.

In some embodiments, as shown in fig. 10, the end of the wall portion 132 in the second direction is provided with a chamfer, and the inner surface of the wall portion 132 is inclined outward in the second direction. This allows the head 22 of the chamfered guide protrusion 1112 to be inserted into the engaging portion 13.

In some embodiments, the shape of the engaging portion 13 may be adaptively set according to the shape of the protrusion 1112. For example, when the protrusion 1112 is flat, the engagement portion 13 may be flat and clip-shaped as shown in fig. 4. For another example, when the protrusion 1112 has a columnar shape, the engaging portion 13 may have a cylindrical shape.

In some embodiments, as shown in fig. 9, in the engaging portion 13, the wall portion 132 includes a first wall portion 1321 and a second wall portion 1322 which are oppositely disposed, the projection 133 includes a first projection 1331 which is disposed on an inner surface of the first wall portion 1321 and a second projection 1332 which is disposed on an inner surface of the second wall portion 1322, the first projection 1331 projects from the inner surface of the first wall portion 1321 in a direction approaching the second wall portion 1322, the second projection 1332 projects from the inner surface of the second wall portion 1322 in a direction approaching the first wall portion 1321, and a surface C in the second direction of the head 22 of the projection 1112 abuts against a surface K in the first direction of the first projection 1331 and the second projection 1332.

By providing the wall portion 132 of the engagement portion 13 as the first wall portion 1321 and the second wall portion 1322 that are circumferentially separated from each other, the first wall portion 1321 and the second wall portion 1322 of the engagement portion 13 are easily deformed in a direction away from each other when the protrusion 1112 is engaged with the engagement portion 13, and therefore, the protrusion 1112 and the engagement portion 13 can be easily engaged, and the fan 11 can be easily attached. Further, when the fan 11 is detached, the first wall portion 1321 and the second wall portion 1322 of the engaging portion 13 can be easily deformed in a direction away from each other, and for example, the bottom portion 131 of the engaging portion 13 can be broken in a direction parallel to the first wall portion 1321 and the second wall portion 1322, so that the fan 11 can be easily detached, and the protruding portion 1112 of the fan 11 is not damaged, and the service life of the fan 11 can be improved.

In some embodiments, as shown in fig. 4 and 9, the air supply device 1 may further include a gasket 14 disposed between the main body portion 1111 of the casing 111 and the housing 12. This can damp the relative movement between the fan 11 and the casing 12, and stabilize the operation of the fan 11.

In some embodiments, the gasket 14 may be a rubber material. The rubber material has good elasticity, so that the buffering effect can be further improved.

In some embodiments, as shown in fig. 6, a groove 122 (shown as a dashed box) may be provided on the surface of the housing 12 in the first direction. Fig. 11 is another sectional view as viewed along a section line B-B' in fig. 6. In some embodiments, as shown in fig. 11, the surface of the housing 12 in the first direction is provided with a groove 122 recessed in the second direction, the groove 122 is provided with a through hole 121, and when the engaging portion 13 engages with the protrusion 1112, the end of the engaging portion 13 in the second direction is located in the groove. When the protrusion 1112 is inserted into the engagement portion 13, the wall portion 132 of the engagement portion 13 is deformed, and the groove is provided on the surface of the housing 12 in the first direction, whereby interference between the housing 12 and the wall portion 132 can be avoided, and engagement can be performed more reliably.

In some embodiments, as shown in fig. 11, in the case where the protrusion 1112 is engaged with the engaging portion 13, the end of the engaging portion 13 in the second direction abuts against the bottom of the groove. This allows the fan 11 to be restricted in the first direction and the second direction by the engaging portion 13.

According to the above embodiment, the fan 11 and the engaging portion 13 are provided on both sides of the housing 12, and the protruding portion 1112 of the casing 111 of the fan 11 is inserted through the through hole 121 of the housing 12 and engaged with the engaging portion 13, whereby the fan 11 can be assembled to the housing 12. This makes it possible to reliably fix the fan 11, and to facilitate the operation without requiring a special tool to attach or detach the fan 11. Further, it is not necessary to provide a member through which screws are passed or fixed on the outer periphery of the fan 11, and therefore, the material required in the manufacturing process of the fan 11 can be saved and the fan 11 can be miniaturized.

Example 2

The present embodiment provides an electrical product, which includes the air supply device 1 described in embodiment 1, and since the structure of the air supply device has been described in embodiment 1, the content thereof is incorporated herein, and the details thereof are not repeated herein.

In the electric product according to the present embodiment, the fan and the engaging portion are provided on both sides of the housing of the air blower by adopting the structure of the air blower described in embodiment 1, and the fan can be assembled to the housing by inserting the protruding portion of the casing of the fan through the through hole of the housing and engaging with the engaging portion. Therefore, the fan can be reliably fixed, the fan does not need to be mounted or dismounted by a special tool, and the operation is convenient. Further, it is not necessary to provide a member through which a screw passes or is fixed on the outer circumference of the fan, and therefore, a material required in the manufacturing process of the fan can be saved and the fan can be miniaturized.

In the present embodiment, the electrical product may be any electrical product using an air supply device, and for example, may be a consumer electronic product, a computer product, an in-vehicle product, a refrigeration apparatus (e.g., a refrigerator), or the like.

While the utility model has been described with reference to specific embodiments, it will be apparent to those skilled in the art that these descriptions are illustrative and not intended to limit the scope of the utility model. Various modifications and alterations of this invention will become apparent to those skilled in the art based upon the spirit and principles of this invention, and such modifications and alterations are also within the scope of this invention.

Claims (11)

1. An air supply device, characterized in that the air supply device comprises:

a fan having a case having a main body and a protrusion, wherein the protrusion is disposed on a first surface of the main body in a first direction, extending from the first surface in the first direction;

a housing provided on one side of the main body of the housing in the first direction and having a through hole through which the protruding portion passes; and

and an engaging portion provided on one side of the housing in the first direction and engaged with the protruding portion.

2. The air supply arrangement according to claim 1,

the protruding portion has:

a base having one end fixed to the first surface of the main body portion of the cabinet;

a head portion located on one side of the base portion in the first direction and engaged with the engaging portion; and

a connecting portion connecting the base and the head.

3. The air supply arrangement of claim 2,

one end of the connecting portion is connected to at least a portion of the other end of the base portion, and the other end of the connecting portion is connected to a portion of a surface of the head portion in a second direction opposite to the first direction and/or is connected to a portion of a side surface of the head portion.

4. The air supply arrangement according to claim 3,

the connecting portion comprises a first leg portion and a second leg portion which are columnar and arranged at intervals, one end of the first leg portion and one end of the second leg portion are connected with the other end of the base portion, the head portion is arranged between the other end of the first leg portion and the other end of the second leg portion, and the first leg portion and the second leg portion are connected with part of the side face of the head portion.

5. The air supply apparatus according to claim 3 or 4,

the connecting portion includes a third leg portion, one end of which is connected to at least a part of the other end of the base portion, the other end of which is connected to a part of the surface of the head portion in the second direction, and a dimension of the other end of which in a direction perpendicular to the first direction is smaller than a dimension of the head portion in a direction perpendicular to the first direction.

6. The air supply arrangement of claim 2,

the engaging portion includes:

a bottom;

a wall portion extending from the bottom portion in a second direction opposite to the first direction; and

a boss portion provided on an inner surface of the wall portion, protruding therefrom, a surface of the boss portion in the first direction abutting a surface of the head portion in the second direction.

7. The air supply arrangement of claim 6,

the thickness of the boss in the protruding direction gradually increases along the first direction.

8. The air supply arrangement of claim 6,

an end portion of the wall portion in the second direction is provided with a chamfer, and an inner surface of the wall portion is inclined outward along the second direction.

9. The air supply arrangement according to claim 1,

a recess that is recessed in a second direction opposite to the first direction is provided on a surface of the housing in the first direction, the recess is provided with the through hole, and when the engaging portion engages with the protruding portion, an end of the engaging portion in the second direction is positioned in the recess.

10. The air supply arrangement according to claim 1,

the air supply device further comprises a gasket, and the gasket is arranged between the main body part of the machine shell and the shell.

11. An electric product, characterized in that the electric product comprises the air supply device of any one of claims 1 to 10.

Images