CN217063431U - Motor and air supply device - Google Patents
Motor and air supply device Download PDFInfo
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- CN217063431U CN217063431U CN202220739694.0U CN202220739694U CN217063431U CN 217063431 U CN217063431 U CN 217063431U CN 202220739694 U CN202220739694 U CN 202220739694U CN 217063431 U CN217063431 U CN 217063431U
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- insulator
- lead
- wall surface
- circuit board
- motor
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Abstract
The utility model discloses a motor and air supply arrangement, this motor includes: a housing; a stator core disposed in the housing; an insulator disposed on the stator core, the insulator having a winding wound thereon, and the insulator insulating the winding from the stator core; a circuit board disposed within the housing; the lead is led out of the shell from the circuit board; the motor further includes: a protrusion provided on the insulator and protruding from an outer peripheral side of the insulator to the outside of the insulator; and a lead fixing portion connected to the case and fixing the lead, wherein a movement restraining portion for engaging with the protruding portion is provided on a side of the lead fixing portion opposite to the protruding portion. The utility model discloses a motor can be connected lead wire fixed part and casing fixedly, can also utilize the removal on the lead wire fixed part to restrain the portion fixed with the protruding portion block on the insulator simultaneously, has strengthened the fixed effect to the lead wire, to the influence of circuit board when can reducing the lead wire atress.
Description
Technical Field
The disclosure relates to the technical field of driving equipment, in particular to a motor and an air supply device.
Background
A known method for fixing a motor lead (lead) is to fix the lead on a circuit board. A conventional wire fixing method is explained with reference to fig. 1.
As shown in fig. 1, the related art discloses a stator 100, a rotor 103 rotating together with a shaft 102 by a rotating magnetic field generated by a winding 101 wound around the stator 100, and a circuit board 104 having a conductive wire provided above and at a certain distance from the coil 101 of the stator 100. The wires are collected by the protective sleeve 105, and the protective sleeve 105 is fixed to the sleeve fixing portion 106 of the circuit board 104 by a tie 107.
Since the protective sleeve 105 is fixed to the sleeve fixing portion 106 of the circuit board 104 by the band 107 in the above-described conventional motor mounting method, when the lead is applied with a force, the force is transmitted to the circuit board to which the lead is connected, thereby affecting the circuit board. In addition, the ribbon is installed in such a narrow space inside the motor, which is complicated in process and troublesome in installation.
SUMMERY OF THE UTILITY MODEL
In view of the above technical problems, an object of the present disclosure is to provide a motor and an air blower. The circuit board can inhibit the influence of lead stress on the circuit board, and is convenient to install.
In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:
the embodiment of the utility model provides a motor, include: a housing; a stator core disposed within the housing; an insulator provided on the stator core, the insulator having a winding wound thereon and insulating the winding from the stator core; a circuit board disposed within the housing; the lead is led out of the shell from the circuit board; the motor further includes: a protrusion provided on the insulator and protruding from an outer peripheral side of the insulator to the outside of the insulator; and a lead fixing portion connected to the case and fixing the lead, wherein a movement suppressing portion for engaging with the protruding portion is provided on a side of the lead fixing portion facing the protruding portion.
In some optional embodiments, the lead fixing part includes: the casing comprises a front wall surface arranged on the outer side of the casing, a rear wall surface arranged on the inner side of the casing, a groove arranged between the front wall surface and the rear wall surface, and a hollow pipe sleeve penetrating through the front wall surface and the rear wall surface.
In some optional embodiments, the movement suppressing portion includes a recessed portion recessed from the rear wall surface toward the front wall surface.
In some optional embodiments, one side of the recess is provided with a protrusion clamping inlet for clamping with the protrusion, and the other side of the recess opposite to the protrusion clamping inlet is communicated with the inner wall of the hollow pipe sleeve.
In some optional embodiments, the protrusion comprises: a root connected to the insulator, and a head extending from the root, the head having a width that exceeds a width of the root.
In some optional embodiments, the recess comprises: a head mounting space matching with the shape of the head, and an opening part with a width shorter than that of the head mounting space.
In some alternative embodiments, two sides of the rear wall surface are respectively provided with a resisting wall vertically arranged from the outer peripheral edge of the rear wall surface.
In some optional embodiments, the blocking wall has a shape of "7" when viewed from a surface facing the rear wall surface, and the lead fixing part further includes: and a blocking part arranged on the rear wall surface and used for inhibiting the circuit board from moving.
In some optional embodiments, the circuit board includes an extending portion extending to an outer side of the insulator, and the blocking portion abuts against the extending portion in a state where the movement suppressing portion is engaged with the protruding portion.
The embodiment of the utility model provides an air supply arrangement is equipped with above-mentioned arbitrary motor.
Drawings
Fig. 1 is a schematic structural view of a prior art motor.
Fig. 2 is a schematic perspective view of a motor according to an embodiment of the present invention.
Fig. 3 is an exploded view of a motor according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a lead fixing portion according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of the concave portion according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a lead fixing portion according to another embodiment of the present invention.
Fig. 7 is a schematic view illustrating an installation of a circuit board and a lead fixing portion according to another embodiment of the present invention.
Fig. 8 is an enlarged view of a portion a in fig. 7.
[ reference numerals ]
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be described in further detail below with reference to specific embodiments and the accompanying drawings. In addition, the following embodiment is only one of specific examples of the present disclosure, and does not limit the technical scope of the present disclosure.
In the drawings, the second explanation of the same reference numerals for the same components and the explanation of the components not directly related to the present invention will be omitted or simplified. In the following description, the terms of orientation of the upper, lower, left, right, upper and lower parts are used in the embodiment of the present invention. The transverse direction is a direction perpendicular to the central axis direction of the stator core, and the longitudinal direction is a direction parallel to the central axis direction of the stator core.
Next, a motor 100 according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 2 is a schematic perspective view of a motor according to an embodiment of the present invention. Fig. 3 is an exploded view of a motor according to an embodiment of the present invention.
As shown in fig. 2 to 3, the motor of the embodiment of the present disclosure may include: the stator includes a case 110, a stator core 120, an insulator 130, a winding, a circuit board 140, a lead 150, a protrusion 160, a lead fixing part 170, and a terminal pin.
The housing 110 is a housing of the motor 100, and the housing 110 includes an upper housing 111 and a lower housing 112, and the components of the motor 100 are accommodated in the housing 110 by the cooperation of the upper housing 111 and the lower housing 112. In this embodiment, the upper housing 111 is provided with an opening or a notch, and the lead fixing portion 170 is fixed on the opening or the notch.
The stator core 120 is disposed in the housing 110, and the stator core 120 includes magnetic poles (in the figure, the magnetic poles are blocked by windings) forming a magnetic field, yoke portions connected to outer peripheral portions of the magnetic poles to form a magnetic path, and pole shoes located inside the magnetic poles (located substantially on the same plane as an inner wall portion 131 described later, and located in a vertical relationship with each other). The stator core 120 is generally formed by laminating a predetermined number of sheets, and for example, the stator core 120 may be formed by processing a plurality of split cores arranged in a straight line and composed of adjacent yoke portions into a ring shape, or may be formed by connecting yoke portions of a plurality of individual split cores into a ring shape. The stator core 120 has a top surface in a circular ring shape, and a bottom surface opposite thereto, as viewed in the axial direction. Alternatively, the stator core 120 may have other numbers of poles, yoke portions, and pole shoes according to the number of poles of the motor, in addition to the structure shown in the drawings. Generally, the winding may be directly wound on the poles or corresponding structures of the stator core 120.
The stator core 120 is provided with an insulator 130, and the insulator 130 covers a range from a yoke portion of the stator core 120 to a magnetic pole, and blocks contact of the stator core 120 with the winding. In the present embodiment, the insulator 130 includes: the winding portion around which the winding is wound, the outer wall portion 132 to which the winding is fastened, and the inner wall portion 131 provided on the inner circumferential side of the outer wall portion 132 are fastened, and insulation is maintained between the winding and the stator core 120 by the insulator 130. The insulator 130 may be formed by integrally molding the inner wall portion 131, the winding portion, and the outer wall portion 132 using a resin material, or may be formed using another insulating material. The winding portion is a bobbin, which is generally called a bobbin.
In the present embodiment, the winding is a wire made of a metal such as aluminum alloy or copper as a main material, and is wound around the stator core 120 with the insulator 130 as a medium. In addition, the specification and the winding method of the winding can be changed according to the needs or the characteristics.
The circuit board 140 is disposed in the housing 110, and the circuit board 140 connects the winding to an external circuit such as an inverter circuit by connecting a plurality of electrical contacts. In one embodiment, the circuit board 140 has a partial circular ring shape concentric with the central axis of the stator core 120. The circuit board 140 is disposed on a plane perpendicular to the central axis of the stator core 120 and spaced apart from the central axis of the stator core 120 by a predetermined distance in the transverse direction. The circuit board 140 is fixed on the top surface of the insulator 130, and the circuit board 140 is connected with the lead 150 on the surface thereof on the opposite side to the insulator 130, and the lead 150 is led out from the circuit board 140. In order to supply power from outside the motor 100 to the circuit board 140, the ends of the leads 150 are connected to the electrical contacts of the circuit board 140, respectively. The top surface of the insulator 130 refers to an end surface of the insulator 130 facing the upper case 111.
And a lead 150 connected to the circuit board 140 and led out of the housing 110 from the circuit board 140, wherein power of the motor 100 can be obtained through the lead 150.
The motor 100 further includes a protrusion 160 provided on the insulator 130, the protrusion 160 on the insulator 130 has a "T" shape, the protrusion 160 is located near an end of the insulator 130 in the central axis direction, and in the present embodiment, the protrusion 160 is provided outside the insulator 130 and near the top surface of the insulator 130. In other embodiments, the protrusion 160 may be disposed at other locations on the insulator 130.
The lead fixing portion 170 is connected to the housing 110, and in this embodiment, the lead fixing portion 170 is fixed on the opening or the notch of the upper housing 111 for fixing the lead 150. The lead fixing portion 170 is made of soft rubber, and can deform after being stressed and extruded, so that the lead fixing portion is convenient to install and can avoid damaging the lead 150. The lead fixing portion 170 may be circular or semicircular, and the shape of the lead fixing portion 170 varies according to the shape of the opening or the notch of the housing 110, for example, in the embodiment, when the upper housing 111 is provided with a semicircular notch, the lead fixing portion 170 may be semicircular to fit the semicircular notch. A movement suppressing portion 171 for engaging with the protruding portion 160 is provided on the side of the lead fixing portion 170 opposite to the protruding portion 160, and the lead fixing portion 170 and the protruding portion 160 can be tightly connected by the movement suppressing portion 171.
The terminal pins are fixed to the top surface of the insulator 130, i.e., the surface of the insulator 130 opposite to the circuit board 140, and stand in the direction of the circuit board 140 and are arranged parallel to the central axis direction of the stator core 120, i.e., in the axial direction. The terminal pins, which are mainly formed of a conductive material, are electrically connected to the windings and the copper foil on the circuit board 140, respectively, so that the windings and the circuit board 140 are electrically connected to each other.
According to the motor 100 of the embodiment, the lead fixing portion 170 can be connected and fixed to the housing 110, and the movement restraining portion 171 of the lead fixing portion 170 can be engaged and fixed with the protrusion 160 of the insulator 130, so that the fixing effect on the lead 150 is enhanced, and the influence on the circuit board 140 when the lead 150 is stressed can be reduced.
Fig. 4 is a schematic structural diagram of a lead fixing portion according to an embodiment of the present invention. Fig. 5 is a schematic structural diagram of the concave portion according to the embodiment of the present invention.
As shown in fig. 4 and 5, the lead fixing part 170 of the present embodiment may include: the front wall surface 172, the rear wall surface 173, the recess 174, the hollow sleeve 175, and the movement restraint portion 171 abut against the wall 176.
The rear wall 173 is a surface close to the inner peripheral side of the case 110, and the front wall 172 is positioned inside the case 110 when the lead fixing portion 170 is fixed to the case 110.
A groove 174, a groove provided between the front wall 172 and the rear wall 173, the groove 174 for cooperating with the upper case 111 and the lower case 112, an edge of the upper case 111 and/or an edge of the lower case 112 being fixed in the groove 174 when the upper case 111 and the lower case 112 are coupled.
A hollow sleeve 175 penetrates the lead fixing portion 170 and communicates the front wall 172 and the rear wall 173, and the lead 150 connected to the circuit board 140 is penetrated out of the case 110 through the hollow sleeve 175. In the present embodiment, the hollow socket 175 communicates with a recess 171a described later.
The movement suppressing portion 171 is provided on the side of the lead fixing portion 170 opposite to the protruding portion 160, that is, on the side of the rear wall surface 173, and the movement suppressing portion 171 engages with the protruding portion 160 to prevent the movement of the lead fixing portion 170.
In some exemplary embodiments, the movement restraining part 171 includes: the recess 171a is engaged with the protrusion 160.
The recess 171a is a recess formed by being recessed from the rear wall 173 toward the front wall 172, and in this embodiment, the recess 171a is recessed from the rear wall 173 to a position facing the recess 174, and the cross section of the recess 171a in the direction perpendicular to the central axis of the stator core 120 is in a shape of a "convex". That is, the depth of the recess 171a is from the surface of the rear wall 173 to a position opposite to the groove 174, whereby, when the upper case 111 and the lower case 112 are caught in the groove 174, the upper case 111 and the lower case 112 can press the side of the recess 171a so that the recess 171a is engaged with the protrusion 160 more tightly.
In the present embodiment, the insulator 130 has a substantially annular structure that fits the stator core 120, the protrusion 160 protrudes in a direction away from the insulator 130 with a surface of the insulator 130 at the outermost periphery of the annular insulator 130 as a starting point, that is, in a direction toward the yoke portion, and protrudes to the outer periphery of the yoke portion, and a side surface of the protrusion 160 away from the stator core 120 does not exceed the outer surface of the yoke portion. The protrusion 160 includes a root connected to the insulator 130 and a head extending from the root, the head having a width exceeding that of the root so that the protrusion 160 does not escape from the recess 171 a. Specifically, the protrusion 160 has a T-shaped cross section perpendicular to the center axis direction of the stator core 120, a head portion is formed on the side of the protrusion 160 away from the center axis of the stator core 120, a root portion is formed on the side connected to the outer side surface of the insulator 130, and the protrusion 160 protrudes from the insulator 130 in the direction away from the center axis of the stator core 120.
The recess 171a of the present embodiment includes: head mounting space 171c, opening 171d, and projection card entrance 171 b.
A head mounting space 171c which is a space matched with the shape of the head of the protrusion 160, and in this embodiment, the head mounting space 171c is a solid rectangular parallelepiped for accommodating the head of the protrusion 160. Wall surfaces on both sides of the head mounting space 171c are parallel to the bottom surface of the recess 174, and the side wall of the head mounting space 171c shares a wall with the bottom surface of the recess 174.
The opening 171d has an opening in the opening 171d, and the opening width is shorter than the width of the head attachment space 171c, thereby preventing the head from being detached from the head attachment space 171 c. In the present embodiment, the width of the opening is the same as the width of the root, so that the opening 171d is tightly engaged with the root when the head is placed in the head mounting space 171 c.
The protrusion card inlet 171b is provided at one side of the recess 171a for the protrusion 160 to be snapped into the head mounting space 171c, and the other side of the recess 171a opposite to the protrusion card inlet 171b communicates with the inner wall of the hollow tube housing 175. In the present embodiment, the projection card inlet 171b is disposed below the recess 171a, and communicates with the head mounting space 171c and the opening 171 d. The protrusion 160 enters the recess 171a from the protrusion card inlet 171b until contacting the lead 150 passing through the hollow socket 175, thereby fixing the lead 150.
The assembly of the motor 100 of the present embodiment will be described in detail below with reference to fig. 2 to 5.
When assembling motor 100, first, lead 150 is connected to circuit board 140, circuit board 140 is fixed to insulator 130, and in the state where circuit board 140 is mounted, protruding portion 160 protrudes to the outer peripheral side of circuit board 140.
Then, the lead 150 is passed through the hollow socket 175 of the lead fixing portion 170 while aligning the protrusion card inlet 171b of the lead fixing portion 170 with the protrusion 160, so that the protrusion 160 enters the recess 171 a. Until the protrusion 160 comes into contact with the wall of the hollow socket 175, the protrusion 160 is completely fixed in the recess 171 a. Finally, the lead fixing portion 170 is snapped into the notch of the upper case 111, so that the edge of the upper case 111 is snapped into the recess 174, and then the lower case 112 and the upper case 111 are closed, thereby completing the assembly of the motor 100.
Since the lead fixing portion 170 in this embodiment has a semicircular shape, the lead fixing portion 170 can be fitted into the notch of the upper case 111 in the last step. In other embodiments, when the upper case 111 has a circular opening, after the protrusion 160 is completely fixed in the recess 171a, the lead fixing portion 170 needs to be clipped into the opening of the upper case 111, that is, after the lead fixing portion 170 is deformed to fit the groove 174 of the lead fixing portion 170 with the edge of the circular opening of the upper case 111, the lower case 112 is then closed with the upper case 111, and the assembly of the motor 100 is completed.
In the assembly process of the motor 100, the movement suppressing portion 171 of the lead fixing portion 170 is engaged with the protrusion portion 160, so that the lead 150 and the insulator 130 can be fixed together without using a band. The installation is convenient and simple.
Further, after the protrusion 160 is fixed in the recess 171a of the movement suppressing member 171, even if the lead 150 receives an external force generated by pulling or vibration of the motor 100 during operation, a force is transmitted to the lead fixing member 170, and the movement suppressing member 171 of the lead fixing member 170 engages with the protrusion 160, so that the circuit board 140 connected to the lead 150 is not affected.
Fig. 6 is a schematic structural view of a lead fixing portion according to another embodiment of the present invention. Fig. 7 is a schematic view illustrating an installation of the circuit board and the lead fixing portion according to another embodiment of the present invention. Fig. 8 is an enlarged view of a portion a in fig. 7.
As shown in fig. 6 to 8, the lead fixing part 170 of the present embodiment may further include a blocking wall 176 and a stopper 177.
Specifically, the stopper walls 176 are provided on both upper sides of the rear wall 173 of the lead fixing portion 170, and are erected from the outer peripheral edge of the rear wall 173. That is, the stopper wall 176 is a standing wall extending toward the inner circumferential side of the motor 100. The blocking wall 176 has a shape of "7" as viewed from the direction facing the rear wall 173 for blocking the circuit board 140.
In addition, in the present embodiment, the circuit board 140 includes: an extension 141. The extension portion 141 is a portion of the circuit board 140 extending from the circuit board 140 to the outside of the insulator 130. In this embodiment, two extending portions 141 are provided, and are respectively disposed at the left and right sides of the connection portion of the circuit board 140 and the lead 150, so as to cooperate with the retaining walls 176 at the two sides of the rear wall 173 for limiting.
The stopper 177 is provided on the rear wall 173, and the movement suppressing part 171 abuts against the extending part 141 in a state of being engaged with the protrusion 160, that is, the stopper 177 contacts the extending part 141 of the circuit board 140 for suppressing the movement of the circuit board 140. In this embodiment, after the blocking wall 176 extends from the outer peripheral edge of the rear wall 173 to the inner peripheral side of the motor 100, the blocking portion 177 is a block-shaped structure formed by extending the portion higher than the extending portion 141 of the circuit board 140 to the inner side of the movement restraining portion 171, and is used for restraining the circuit board 140 from moving upward.
In the present embodiment, when the protrusion 160 is fixed in the recess 171a of the movement restraining part 171 during the installation of the motor 100, the extension part 141 of the circuit board 140 is positioned below the blocking part 177. At this time, even if the lead 150 receives an external force generated by pulling, vibration of the operation of the motor 100, or the like, the circuit board 140 is not displaced because the circuit board 140 is blocked by the blocking portion 177 in the upward moving direction. Further reducing the influence of the stress on the circuit board 140 by the leads 150.
The above is merely an exemplary description, and the present embodiment is not limited thereto. In other embodiments, the protrusion 160 may have other shapes, and the shape of the recess 171a may be changed according to the change of the shape of the protrusion 160.
The motor 100 having the structure shown in the above embodiment can be applied to an air supply device, and the motor 100 can be used to provide wind power drive for the air supply device, thereby reducing problems caused by a failure of the circuit board 140 of the motor.
Up to this point, the present embodiment has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly recognize that the motor and blower apparatus of the present disclosure are applicable. The lead 150 in the present disclosure may simply be fixed and able to resist an externally applied force.
It is to be understood that the implementations not shown or described in the drawings or in the text of this specification are in a form known to those skilled in the art and are not described in detail. In addition, the above definitions of the various elements and methods are not limited to the specific structures, shapes or modes of operation set forth in the examples, which may be readily modified or substituted by those of ordinary skill in the art.
It should be noted that throughout the drawings, like elements are represented by like or similar reference numerals. In the foregoing description, some specific embodiments have been described for purposes of illustration only, and are not to be construed as limiting the disclosure in any way, but rather as merely illustrative of the embodiments of the disclosure. Conventional structures or constructions will be omitted when they may obscure the understanding of the present disclosure. It should be noted that the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. An electric machine comprising:
a housing;
a stator core disposed within the housing;
an insulator provided on the stator core, the insulator having a winding wound thereon and insulating the winding from the stator core;
a circuit board disposed within the housing;
the lead is led out of the shell from the circuit board;
characterized in that, the motor still includes:
a protrusion provided on the insulator and protruding from an outer peripheral side of the insulator to outside the insulator; and
a lead fixing portion connected to the case for fixing the lead,
a movement restraining portion for engaging with the protruding portion is provided on a side of the lead fixing portion facing the protruding portion.
2. The electric machine of claim 1,
the lead wire fixing portion includes:
the casing comprises a front wall surface arranged on the outer side of the casing, a rear wall surface arranged on the inner side of the casing, a groove arranged between the front wall surface and the rear wall surface, and a hollow pipe sleeve penetrating through the front wall surface and the rear wall surface.
3. The electric machine of claim 2,
the movement suppressing portion includes a recessed portion recessed from the rear wall surface toward the front wall surface.
4. The electric machine of claim 3,
one side of the sunken part is provided with a protruding part clamping opening used for clamping with the protruding part, and the other side of the sunken part, which is opposite to the protruding part clamping opening, is communicated with the inner wall of the hollow pipe sleeve.
5. The electric machine of claim 3,
the protruding portion includes: a root connected to the insulator, and a head extending from the root, the head having a width that exceeds a width of the root.
6. The electric machine of claim 5,
the recess includes:
a head installation space matched with the shape of the head,
and an opening portion having a width shorter than the width of the head mounting space.
7. The motor of claim 2, wherein the rear wall surface is provided at both sides thereof with abutment walls standing upright from an outer peripheral edge of the rear wall surface, respectively.
8. The electric machine of claim 7,
the abutment wall is shaped like a letter "7" when viewed facing the rear wall surface,
the lead wire fixing portion further includes: and a blocking part arranged on the rear wall surface and used for inhibiting the circuit board from moving.
9. The electric machine of claim 8,
the circuit board includes an extension portion extending to an outside of the insulator,
the stopper portion abuts against the extending portion in a state where the movement suppressing portion is engaged with the protruding portion.
10. An air supply device characterized by being provided with the motor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220739694.0U CN217063431U (en) | 2022-03-31 | 2022-03-31 | Motor and air supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220739694.0U CN217063431U (en) | 2022-03-31 | 2022-03-31 | Motor and air supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217063431U true CN217063431U (en) | 2022-07-26 |
Family
ID=82468590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220739694.0U Active CN217063431U (en) | 2022-03-31 | 2022-03-31 | Motor and air supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217063431U (en) |
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2022
- 2022-03-31 CN CN202220739694.0U patent/CN217063431U/en active Active
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