CN219181341U

CN219181341U - Dry motor

Info

Publication number: CN219181341U
Application number: CN202320288371.9U
Authority: CN
Inventors: 朱云舫
Original assignee: Xingdesheng Technology Suzhou Co ltd
Current assignee: Xingdesheng Technology Suzhou Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-13
Anticipated expiration: 2033-02-22

Abstract

The application relates to a dry motor, relates to motor technical field. The novel motor stator comprises a shell, wherein an installation space for installing components such as a stator is arranged in the shell, an upper opening and a lower opening which are communicated with the installation space are formed in two end walls of the shell along the axis direction of the installation space, a circuit board is arranged on one side, close to the upper opening, of the shell, the circuit board is detachably connected with the shell, a welding spot is connected on one side, far away from the shell, of the circuit board, a cover plate is arranged on one side, far away from the shell, of the circuit board, the cover plate is detachably connected with the shell, and a yielding groove for welding the welding spot is formed in the side wall of the cover plate. When the dry motor is installed, the circuit board can be connected with the shell, and then the cover plate is connected with the shell, so that the circuit board can be protected and damage can be reduced in the transportation process and the use process; and then welding spots on the circuit board through the abdication groove so as to increase the functions of control and the like for a motor user. The completion of the soldering after the cover plate is connected with the housing reduces the possibility of damage to the circuit board due to uneven stress.

Description

Dry motor

Technical Field

The present application relates to the field of motors, and more particularly to a dry motor.

Background

The motor is an electromagnetic device for converting or transmitting electric energy according to the law of electromagnetic induction. In a vacuum cleaner, the motor is the most dominant component, directly determining the performance parameters of the vacuum cleaner. Motors can be classified into dry motors and wet and dry motors according to the degree of wetness of the environment in which the cleaner is used.

A dry motor is mainly used for sucking dry garbage such as dust, paper scraps and the like; the dry motor comprises a shell, wherein an installation space is formed in the shell and is used for installing components such as a rotor, a stator, a movable impeller, a fixed impeller and the like, an upper opening and a lower opening which are communicated with the installation space are formed in two side walls of the shell along the axis of the installation space, a circuit board and a cover plate are sequentially arranged on one side, close to the upper opening, of the shell along the axis direction of the shell, the circuit board and the cover plate are connected with the shell through screws in a detachable mode, and welding spots are connected on one side, close to the cover plate, of the circuit board.

In realizing the above-described related art, the inventors found that there are at least the following problems in the art: because the cover plate shields the circuit board, welding spots are required to be welded before the cover plate is installed, then the cover plate and the circuit board are installed on the shell through screws, and the circuit board is damaged due to uneven stress caused by welding the circuit board in the screwing process, so that the improvement is required.

Disclosure of Invention

In order to reduce the possibility of damaging a circuit board due to uneven stress, the application provides a dry motor.

The dry motor adopts the following technical scheme:

the utility model provides a dry motor, includes the casing, be provided with installation space in the casing, installation space is used for installing stator, rotor, moving impeller and stator vane, the casing is followed the upper portion opening and the lower part opening of installation space intercommunication are seted up to the both ends wall of installation space's axis direction, the casing is close to upper portion open-ended one side is provided with the circuit board, the circuit board with casing detachably links to each other, the circuit board is kept away from one side of casing is connected with the solder joint, one side that the casing was kept away from to the circuit board is provided with the apron, the apron with casing detachably links to each other, the lateral wall of apron has been seted up and is used for the welding the groove of stepping down of solder joint.

By adopting the technical scheme, the circuit board can be connected with the shell when the dry motor is installed, and then the cover plate is connected with the shell, so that the circuit board can be protected and damage can be reduced in the transportation process and the use process; and then welding spots on the circuit board through the abdication groove so as to increase the functions of control and the like for a motor user. The completion of the soldering after the cover plate is connected with the housing reduces the possibility of damage to the circuit board due to uneven stress.

Optionally, at least two abdicating grooves are provided, the circuit board is connected with a terminal, and at least one abdicating groove is used for the terminal to penetrate.

Through adopting above-mentioned technical scheme, a plurality of grooves of stepping down can increase dry-type motor's compatibility, and the customer of different demands of being convenient for is connected components and parts such as terminal or electric wire on the circuit board, and need not to dismantle the apron, and convenient to use increases components and parts.

Optionally, the inner wall integrated into one piece of casing has the reference column, the reference column with be provided with the upper bracket between the upper portion opening, the upper bracket passes through the reference column with casing detachably links to each other.

Through adopting above-mentioned technical scheme, reference column and casing integrated into one piece for the upper bracket is more stable with being connected of casing, has improved the installation accuracy of upper bracket simultaneously.

Optionally, the upper bracket is close to the lateral wall of circuit board is connected with the support column, the support column is close to the lateral wall of circuit board is connected with the erection column, the circuit board has been seted up and is used for the passing hole that the erection column adaptation was worn to establish.

Through adopting above-mentioned technical scheme, but convenient to detach circuit board, simultaneously because of the installation accuracy promotion of upper bracket self, can indirectly promote the installation accuracy of circuit board.

Optionally, the inner wall integrated into one piece of casing has the bearing room that is used for installing the bearing, the upper bracket runs through along the lateral wall of its self axis direction and has seted up the bearing hole that is used for installing the bearing.

Through adopting above-mentioned technical scheme, bearing room and casing integrated into one piece can promote the installation accuracy of bearing, and the installation accuracy of upper bracket and casing also obtains improving simultaneously to realize that the axiality of two bearings and rotor shaft is lower, make dry-type motor operation more stable.

Optionally, the shell comprises an upper shell and a lower shell, the upper shell is used for installing a stator and a rotor, the lower shell is used for installing a movable impeller and a fixed impeller, and the upper shell is detachably connected with the lower shell; an air duct for air circulation is formed between the upper shell and the lower shell, and the side wall of the upper shell is provided with a heat dissipation hole in a penetrating way.

By adopting the technical scheme, the shell is divided into the upper shell and the lower shell, so that the dry motor is convenient to install, and the assembly efficiency of the dry motor can be improved; when the motor works, external air can enter from the lower opening, then a part of external air flows into the heat dissipation holes through the air duct to dissipate heat of components such as the stator, the rotor and the like, and a part of external air flows back to the use environment; meanwhile, the outside air flowing out of the air duct cannot directly flow to the circuit board, so that dust accumulation on the circuit board can be reduced, and the possibility of failure of components on the circuit board is reduced.

Optionally, the lateral wall of epitheca runs through and has offered the auxiliary hole, the auxiliary hole is located the louvre with between the circuit board, the inner wall in auxiliary hole is connected with a plurality of bars, adjacent two be formed with the heat dissipation passageway between the bar.

By adopting the technical scheme, when the dry motor works, part of heat can flow out through the heat dissipation channel, and part of external air can enter the shell through the auxiliary hole to dissipate heat of components such as the stator, the rotor and the like; and the grid bars can play a role in blocking dust, so that dust accumulation on the circuit board is reduced.

Optionally, at least two auxiliary holes are provided, and a plurality of auxiliary holes are distributed symmetrically about the axis center of the upper shell.

By adopting the technical scheme, the heat of components inside the shell can flow to the external use environment more uniformly and faster.

In summary, the present application includes at least one of the following beneficial effects:

1. the circuit board is connected with the shell, the cover plate is connected with the shell, and the side wall of the cover plate is provided with the abdication groove for welding spots, so that the possibility of damage of the circuit board due to uneven stress can be reduced;

2. through setting up two at least auxiliary holes, auxiliary holes are about the axis central symmetry distribution of epitheca, can make the heat of the inside components and parts of casing more evenly more faster flow to outside service environment.

Drawings

FIG. 1 is an exploded view of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a rotor and bearing chamber connection according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram showing a connection relationship between an upper bracket and an upper case in an embodiment of the present application;

fig. 4 is a schematic structural diagram for showing a connection relationship between a circuit board and an upper bracket in an embodiment of the present application;

FIG. 5 is a bottom view of a cover plate for use in an embodiment of the present application;

fig. 6 is a top view for showing a cover plate in an embodiment of the present application.

In the figure: 1. a housing; 11. an installation space; 12. an upper case; 121. an air duct; 122. an upper opening; 123. positioning columns; 1231. positioning holes; 124. a bearing chamber; 125. a heat radiation hole; 126. an auxiliary hole; 127. a grid bar; 1271. a heat dissipation channel; 13. a lower case; 131. a first housing; 132. a second housing; 133. a lower opening; 14. an upper bracket; 141. aligning the holes; 142. a support column; 143. a mounting column; 1431. a fixing hole; 144. a bearing hole; 2. a stator; 3. a rotor; 4. a moving impeller; 5. an impeller is fixed; 6. a circuit board; 61. welding spots; 62. an electric wire; 63. a terminal; 64. a passing hole; 7. a cover plate; 71. a relief groove; 72. a sub-pillar; 721. a pass-through hole; 73. the hole is placed.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses a dry motor. Referring to fig. 1 and 2, the dry motor includes a housing 1, and an installation space 11 for installing a stator 2, a rotor 3, a rotor blade 4, and a stator blade 5 is provided in the housing 1. In order to facilitate the installation of the dry motor in the later stage, in this embodiment, the casing 1 is divided into an upper casing 12 and a lower casing 13, the upper casing 12 is detachably connected with the lower casing 13, an air duct 121 for air flow is formed between the upper casing 12 and the lower casing 13, the upper casing 12 is used for installing the stator 2 and the rotor 3, and the lower casing 13 is used for installing the movable impeller 4 and the fixed impeller 5; to further improve the installation efficiency, the lower housing 13 is divided into a first housing 131 and a second housing 132, the stator impeller 5 is connected to the inner wall of the first housing 131, and the rotor impeller 4 is connected to the shaft of the rotor 3. An end wall of the upper case 12 away from the lower case 13 is penetrated with an upper opening 122 communicating with the installation space 11, and an end wall of the second casing 132 away from the upper case 12 is penetrated with a lower opening 133 communicating with the installation space 11. One side of the upper shell 12 far away from the lower shell 13 is provided with a circuit board 6, the circuit board 6 is detachably connected with the upper shell 12, one side of the circuit board 6 far away from the shell 1 is connected with a welding point 61, an electric wire 62 and a terminal 63, one side of the circuit board 6 far away from the upper shell 12 is provided with a cover plate 7, the cover plate 7 is detachably connected with the circuit board 6, a plurality of giving way grooves 71 for welding the welding point 61 are formed in the side wall of the cover plate 7, and the giving way grooves 71 can be used for penetrating the electric wire 62 or the terminal 63, so that the electric wire can adapt to the use requirements of different customers.

Referring to fig. 3, the inner wall of the upper shell 12 is integrally formed with a plurality of positioning columns 123, an upper support 14 is arranged between the positioning columns 123 and the circuit board 6, a plurality of positioning holes 1231 are formed in the positioning columns 123 near the end wall of the upper support 14, the plurality of positioning holes 1231 are distributed in a central symmetry manner with respect to the axis of the upper shell 12, an alignment hole 141 coaxial with the positioning holes 1231 is formed in the end wall of the upper support 14 in a penetrating manner, and a screw penetrates through the alignment hole 141 and the positioning holes 1231, so that the upper support 14 is fixedly connected with the upper shell 12, and the upper support 14 is connected with the shell 1 more stably due to the fact that the positioning columns 123 and the upper shell 12 are integrally formed.

Referring to fig. 2, 3 and 4, a supporting column 142 is connected to a side wall of the upper bracket 14, which is close to the circuit board 6, a mounting column 143 is connected to a side wall of the supporting column 142, which is close to the circuit board 6, and a passing hole 64 for the mounting column 143 to pass through is formed in the circuit board 6. When the circuit board 6 is mounted, the circuit board 6 is passed through the mounting posts 143, and the circuit board 6 is attached to the support posts 142. The side wall of the mounting column 143 away from the lower case 13 is provided with a fixing hole 1431 coaxial with the passing hole 64.

Referring to fig. 5 and 6, a plurality of sub-posts 72 are connected to a side wall of the cover 7, which is close to the circuit board 6, and a through hole 721 coaxial with the fixing hole 1431 is formed in a side of the sub-posts 72, which is close to the circuit board 6, and a placing hole 73 coaxial with the through hole 721 is formed in a side of the cover 7, which is far from the circuit board 6, the placing hole 73 being a stepped hole, the placing hole 73 being a nut portion for placing a screw. When the cover plate 7 is mounted, the axis of the placement hole 73 is aligned with the axis of the passing hole 64, and then the screw is sequentially passed through the placement hole 73, the passing hole 721 and the fixing hole 1431 until the end wall of the screw nut portion is attached to the inner wall of the large hole of the placement hole 73, thereby fixedly connecting the cover plate 7 with the upper bracket 14.

Referring to fig. 2, the inner wall of the upper case 12 is integrally formed with a bearing chamber 124 for mounting a bearing, and the side wall of the upper bracket 14 along the axial direction thereof is perforated with a bearing hole 144 for mounting the bearing, so that the coaxiality of the bearing mounting position can be improved, and the stability of the dry motor during operation can be improved.

Referring to fig. 1, a plurality of heat dissipation holes 125 are formed through a sidewall of the upper case 12, and the plurality of heat dissipation holes 125 are symmetrically distributed with respect to a center of an axis of the upper case 12, so as to facilitate uniform heat dissipation. The lateral wall of epitheca 12 runs through and has offered auxiliary hole 126, and auxiliary hole 126 is located between louvre 125 and circuit board 6, and the inner wall of auxiliary hole 126 is connected with a plurality of bars 127, is formed with heat dissipation channel 1271 between two adjacent bars 127, has promoted the radiating efficiency of epitheca 12, can block partial dust simultaneously and get into, reduces the volume of piling up of dust on circuit board 6 to reduce the possibility that electrical components on circuit board 6 became invalid.

Referring to fig. 1 and 2, when the dry motor is operated, suction force is generated at the lower opening 133, air enters from the lower opening 133 and flows into the air duct 121, a part of the air flows out of the housing 1, one-step air flows into the upper case 12 through the heat dissipation holes 125, heat dissipation is performed on components in the housing 1, and meanwhile, the grills 127 can block part of dust from entering, and heat generated by components inside the dry motor can be transferred to the external environment through the auxiliary holes 126.

The implementation principle of the dry motor in the embodiment of the application is as follows: after the circuit board 6 is connected with the housing 1, the cover plate 7 can reduce collision to the protection circuit board 6, and then the welding points 61 are welded on the circuit board 6 through the relief grooves 71. Compared with the prior art that the welding spots 61 are required to be welded first and then the cover plate 7 is required to be installed, the circuit board 6 is damaged due to uneven stress, the cover plate 7 can be installed first and then the welding spots 61 are required to be welded, and the possibility that the circuit board 6 is damaged can be reduced.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A dry motor, characterized by: including casing (1), be provided with installation space (11) in casing (1), installation space (11) are used for installing stator (2), rotor (3), impeller (4) and stator (5), casing (1) are followed upper portion opening (122) and lower part opening (133) of installation space (11) intercommunication are seted up to the both ends wall of axis direction of installation space (11), casing (1) are close to one side of upper portion opening (122) is provided with circuit board (6), circuit board (6) with casing (1) detachably links to each other, circuit board (6) are kept away from one side of casing (1) is connected with solder joint (61), one side that casing (1) was kept away from to circuit board (6) is provided with apron (7), apron (7) with casing (1) detachably links to each other, the lateral wall of apron (7) has been seted up and is used for the welding groove (71) of stepping down of solder joint (61).

2. The dry motor of claim 1 wherein: at least two abdicating grooves (71) are formed, the circuit board (6) is connected with terminals (63), and at least one abdicating groove (71) is used for penetrating the terminals (63).

3. The dry motor of claim 1 wherein: the inner wall integrated into one piece of casing (1) has reference column (123), reference column (123) with be provided with upper bracket (14) between upper portion opening (122), upper bracket (14) pass through reference column (123) with casing (1) detachably links to each other.

4. A dry motor as claimed in claim 3, wherein: the side wall of the upper bracket (14) close to the circuit board (6) is connected with a supporting column (142), the side wall of the supporting column (142) close to the circuit board (6) is connected with a mounting column (143), and the circuit board (6) is provided with a passing hole (64) for the mounting column (143) to be matched and penetrated.

5. A dry motor as claimed in claim 3, wherein: the inner wall integrated into one piece of casing (1) has bearing room (124) that are used for installing the bearing, the lateral wall of upper bracket (14) along its own axis direction runs through and has seted up bearing hole (144) that are used for installing the bearing.

6. The dry motor of claim 1 wherein: the shell (1) comprises an upper shell (12) and a lower shell (13), wherein the upper shell (12) is used for installing a stator (2) and a rotor (3), the lower shell (13) is used for installing a movable impeller (4) and a fixed impeller (5), and the upper shell (12) is detachably connected with the lower shell (13); an air duct (121) for air circulation is formed between the upper shell (12) and the lower shell (13), and a heat dissipation hole (125) is formed in the side wall of the upper shell (12) in a penetrating manner.

7. The dry motor of claim 6 wherein: auxiliary holes (126) are formed in the side wall of the upper shell (12) in a penetrating mode, the auxiliary holes (126) are located between the heat dissipation holes (125) and the circuit board (6), a plurality of grid bars (127) are connected to the inner wall of each auxiliary hole (126), and heat dissipation channels (1271) are formed between two adjacent grid bars (127).

8. The dry motor of claim 7 wherein: at least two auxiliary holes (126) are arranged, and a plurality of auxiliary holes (126) are distributed in a central symmetry mode relative to the axis of the upper shell (12).