CN212627416U

CN212627416U - Miniature direct current motor with integral type end cover of moulding plastics

Info

Publication number: CN212627416U
Application number: CN202021542133.9U
Authority: CN
Inventors: 黄红华; 刘峰
Original assignee: Changzhou Delai Motor Co ltd
Current assignee: Changzhou Delai Motor Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-02-26
Anticipated expiration: 2030-07-29

Abstract

The application relates to a miniature direct current motor with an integrated injection molding end cover, which belongs to the technical field of motor assembly and comprises an end cover, wherein a shaft hole is formed in the middle of the end cover, the side wall of the shaft hole is arranged in a concave manner towards the direction far away from the axis, and a ball bearing is arranged in the shaft hole; the end cover is provided with an annular groove, the shaft hole and the annular groove are coaxially arranged, a circular ring is formed between the shaft hole and the annular groove, a plurality of mounting grooves are formed in the circular ring along the circumferential direction of the circular ring, first mounting blocks are formed between every two adjacent mounting grooves, and the ball bearings are mounted between the first mounting blocks. When the end cover is processed, the annular groove, the mounting groove and the first mounting blocks are used for injection molding of the integrated type, and then the ball bearing is clamped between the first mounting blocks, so that the ball bearing and the end cover are mounted more conveniently.

Description

Miniature direct current motor with integral type end cover of moulding plastics

Technical Field

The application relates to the technical field of motor assembly, in particular to a miniature direct current motor with an integrated injection molding end cover.

Background

The miniature direct current motor is a rotating motor with direct current energy output or input, and mainly comprises a stator, a rotor, a shell, an end cover and the like.

In the related technology, in the processing process of the motor, each component of the motor is processed respectively, and then the processed components are assembled to form a complete motor. In the related technology, when the shaft hole of the end cover is processed, the ball bearing needs to be installed inside the stainless steel ring firstly, then the stainless steel ring is pressed into the shaft hole, and then the assembly of each component of the motor is started.

In view of the above-mentioned related technologies, the inventor believes that the installation between the ball bearing and the end cover needs to reliably fix the stainless steel ring and the end cover, so that the ball bearing can achieve the effect of aligning, and the installation is complicated.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of complex installation between ball bearing and the end cover, the application provides a miniature direct current motor with integral type end cover of moulding plastics.

The application provides a miniature direct current motor with end cover is moulded plastics to integral type adopts following technical scheme:

a micro direct current motor with an integrated injection molding end cover comprises an end cover and a motor shell, wherein a shaft hole is formed in the middle of the end cover, the side wall of the shaft hole is arranged in a concave manner towards the direction far away from the axis, and a ball bearing is arranged in the shaft hole;

the end cover is provided with an annular groove, the shaft hole and the annular groove are coaxially arranged, a circular ring is formed between the shaft hole and the annular groove, a plurality of mounting grooves are formed in the circular ring along the circumferential direction of the circular ring, first mounting blocks are formed between every two adjacent mounting grooves, and the ball bearings are mounted between the first mounting blocks.

Through adopting above-mentioned technical scheme, the end cover is in the processing, and ring channel, mounting groove and first installation piece are moulded plastics the integral type and are accomplished, then establish the ball bearing card between a plurality of first installation pieces, and it is more convenient to make the installation between ball bearing and the end cover. The bearing is not required to be fixed by other parts and then is installed on the cover plate. The bearing is when the installation, and the bearing exerts force to first installation piece, and mounting groove and ring channel can provide the space to first installation piece to ball bearing's installation, after ball bearing installed between each first installation piece, first installation piece will be fixed ball bearing through the resilience force of self.

Preferably, the edge of end cover is provided with the collar, motor housing cover is located on the collar, motor housing has seted up the installation breach towards the one side of end cover, the one side of end cover towards motor housing is provided with the second installation piece, the second installation piece card is located in the installation breach.

By adopting the technical scheme, when the end cover and the motor shell are installed, the second installation block on the end cover and the installation notch are mutually clamped, and the motor shell is sleeved on the installation ring to complete installation between the end cover and the motor shell.

Preferably, the edge that motor housing was kept away from to the end cover has seted up the installation bayonet socket, first mounting hole has been seted up to the one end of motor housing lateral wall towards the end cover, the lateral wall of first mounting hole towards the end cover is seted up jaggedly, be formed with the fixture block between breach and the first mounting hole, the fixture block laminating card is located on the both sides wall of installation bayonet socket.

By adopting the technical scheme, after the installation between the end cover and the motor shell is finished, the clamping blocks are pressed towards the positions of the installation bayonet, and the clamping blocks on two sides of the notch are clamped on two side walls of the installation bayonet.

Preferably, the end cover is provided with a second mounting hole, one surface of the end cover facing the motor shell is provided with a first reinforcing block, and the first reinforcing block is positioned at one end of the end cover, facing the motor shell, of the second mounting hole.

Through adopting above-mentioned technical scheme, the setting of second mounting hole can be convenient for the connection between motor and other members. The first reinforcing block is arranged, so that the end cover is not easy to reduce the strength of the end cover due to the arrangement of the second mounting hole, and the strength of the end cover can be ensured by the first reinforcing block.

Preferably, one surface of the first reinforcing block facing the ball bearing is set to be an inwards concave arc surface, and one surface of the first reinforcing block away from the ball bearing extends towards the inner side wall of the end cover and is fixedly connected with the inner side wall of the end cover.

Through adopting above-mentioned technical scheme, when motor casing internally mounted has the rotor, the rotation of rotor can be dodged in the setting of cambered surface on the first boss, makes to be difficult to produce between rotor and the first boss and interferes. The first reinforcing block is fixedly connected with the inner side wall of the end cover, so that the strength of the end cover can be increased.

Preferably, one surface of the end cover facing the motor housing is fixedly provided with a second reinforcing block, and the second reinforcing block is located at a position, close to the mounting bayonet, of the end cover.

Through adopting above-mentioned technical scheme, the setting of second boss can make the end cover be difficult to because the seting up of installation breach, and reduces the intensity of self to the intensity of end cover can be ensured to the second boss.

Preferably, tile magnetic steels are arranged inside the motor shell, and a U-shaped elastic sheet is arranged between every two adjacent tile magnetic steels.

Through adopting above-mentioned technical scheme, the effect of tile magnet steel is for the air gap is even, thereby reduces the magnetic gap and obtains higher efficiency. The setting of shell fragment can fix a position and fix every two adjacent tile magnet steels.

Preferably, the one side extension of collar orientation motor housing is provided with curved spacer, the tile magnet steel sets up the both sides of spacer.

Through adopting above-mentioned technical scheme, the setting of spacer can be fixed a position for the installation of tile magnet steel on the one hand, and on the other hand can reduce the use of shell fragment, makes the installation of tile magnet steel more convenient.

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

1. the annular groove, the mounting groove, the first mounting block and the shaft hole are arranged in a concave manner on one surface facing the axis, so that the effect of more convenient mounting between the ball bearing and the end cover can be achieved;

2. the effect of reliable installation between the end cover and the motor shell can be achieved through the second installation block, the installation notch, the installation bayonet and the fixture block;

3. through the setting of first boss and second boss, can play the effect of ensureing end cover intensity.

Drawings

Fig. 1 is a schematic view of the overall structure of a motor in the embodiment of the present application;

FIG. 2 is an exploded view of the motor assembly of the embodiment of the present application;

fig. 3 is a schematic structural diagram of an end cap in an embodiment of the present application.

Description of reference numerals: 1. an end cap; 11. a shaft hole; 12. an annular groove; 13. mounting grooves; 14. a first mounting block; 15. a mounting ring; 151. a step surface; 152. reserving a port; 16. a second mounting block; 17. installing a bayonet; 171. a second reinforcing block; 18. a second mounting hole; 181. a first reinforcing block; 182. a cambered surface; 19. positioning plates; 2. a ball bearing; 3. a motor housing; 31. installing a notch; 32. a first mounting hole; 33. a notch; 34. a clamping block; 4. tile magnetic steel; 5. a spring plate; 6. a rotor; 7. a motor shaft.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a miniature direct current motor with integral type end cover of moulding plastics.

Referring to fig. 1 and 2, a miniature direct current motor with end cover is moulded plastics to integral type, includes end cover 1 and is fixed in motor housing 3 between two end covers 1, and shaft hole 11 has been seted up to the intermediate position of end cover 1, and motor housing 3 internally mounted has rotor 6, and rotor 6 cover is located on motor shaft 7, and in shaft hole 11 was worn to locate respectively at the both ends of motor shaft 7 to stretch out in the shaft hole 11.

Referring to fig. 3, an annular groove 12 coaxial with the shaft hole 11 is formed in the end cover 1, a circular ring is formed between the annular groove 12 and the shaft hole 11, a plurality of mounting grooves 13 are uniformly formed in the circular ring along the circumferential direction of the circular ring, a first mounting block 14 is formed between every two adjacent mounting grooves 13, and a ball bearing 2 is detachably connected between the first mounting blocks 14. The lateral wall of end cover 1 centre bore 11 is towards the direction indent setting of keeping away from motor shaft 7, and consequently the lateral wall of a plurality of first installation piece 14 is towards the direction indent setting of keeping away from motor shaft 7, and the interior concave surface of a plurality of first installation piece 14 can be connected with ball bearing 2's arcwall face mutually supporting, can realize rotating between messenger ball bearing 2 and the shaft hole 11, also can realize rotating between motor shaft 7 and the end cover 1 to the rotation between realization motor shaft 7 that can be better and the end cover 1.

Referring to fig. 2 and 3, a mounting ring 15 is disposed at a position close to the edge of one surface of the end cover 1 facing the end cover 3, a step surface 151 is formed between the side wall of the mounting ring 15 away from the motor shaft 7 and the end cover 1, the motor cover 3 is sleeved on the mounting ring 15, and one surface of the motor cover 3 facing the end cover 1 abuts against the step surface 151. The reserved opening 152 is formed in the side wall of the mounting ring 15, when the motor shell 3 is sleeved on the mounting ring 15, the reserved opening 152 is arranged, so that air inside the motor shell 3 can be discharged conveniently, negative pressure is reduced, and the motor shell 3 and the end cover 1 can be mounted conveniently. Installing ring 15 extends towards motor housing 3's one side and is provided with curved spacer 19, and inside spacer 19 stretched into motor housing 3, spacer 19 and motor housing 3's inner wall laminating set up, all was provided with tile magnet steel 4 in spacer 19's both sides, and the shell fragment 5 of U-shaped is installed to one side that spacer 19 was kept away from to two tile magnet steels 4 to be convenient for reliably fix two tile magnet steels 4.

Referring to fig. 1, a second mounting block 16 is arranged on the stepped surface 151 facing the motor housing 3, a mounting notch 31 is formed in one surface of the motor housing 3 facing the end cover 1, and the second mounting block 16 is clamped in the mounting notch 31. The edge of the end cover 1 far away from the motor housing 3 is provided with an installation bayonet 17, the side wall of one end of the motor housing 3 facing the end cover 1 is provided with a first installation hole 32, the side wall of the first installation hole 32 facing the end cover 1 is provided with a notch 33, a fixture block 34 is formed between the notch 33 and the first installation hole 32, and after the installation between the end cover 1 and the motor housing 3 is completed, the fixture block 34 is pressed towards the position of the installation bayonet 17, so that the fixture block 34 is attached and clamped on two side walls of the installation bayonet 17.

Referring to fig. 1 and 3, the end cover 1 is provided with a second mounting hole 18, and a first reinforcing block 181 is disposed on a surface of the end cover 1 facing the motor housing 3 to increase strength of the end cover 1. The first reinforcing block 181 is located at one end of the second mounting hole 18 facing the motor housing 3, and one surface of the first reinforcing block 181 facing the motor shaft 7 is provided with a concave arc surface 182 to avoid the rotation of the rotor 6. The first reinforcing block 181 is extended outward from the side of the motor shaft 7 and is fixedly connected with the inner side wall of the end cover 1. A second reinforcing block 171 is fixedly arranged on one surface of the end cover 1 facing the motor housing 3, and the second reinforcing block 171 is located at a position of the end cover 1 close to the mounting bayonet 17 to further reinforce the strength of the end cover 1.

The installation process of the miniature direct current motor with the integrated injection molding end cover is as follows: firstly, the ball bearing 2 is installed between the first installation blocks 14 of the end cover 1, secondly, the motor housing 3 is sleeved on the installation ring 15 of the end cover 1, the positioning plate 19 extends into the motor housing 3, the second installation blocks 16 on the end cover 1 and the installation gap 31 on the motor housing 3 are mutually clamped, and one surface of the motor housing 3 facing the end cover 1 is abutted against the step surface 151. Then, the latch 34 is pressed toward the mounting notch 17, so that the latches 34 on both sides of the notch 33 are latched to both side walls of the mounting notch 17. Then, insert in motor housing 3 and at the both sides of spacer 19 and establish tile magnet steel 4, keep away from one side installation shell fragment 5 of spacer 19 at two tile magnet steels 4 and fix tile magnet steel 4. Finally, the rotor 6 is mounted inside the motor housing 3 and the other end cap 1 is mounted at the end of the motor housing 3.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a miniature direct current motor with end cover is moulded plastics to integral type, includes end cover (1) and motor housing (3), its characterized in that: a shaft hole (11) is formed in the middle of the end cover (1), the side wall of the shaft hole (11) is arranged in a concave mode towards the direction far away from the axis, and a ball bearing (2) is installed in the shaft hole (11);

the end cover is characterized in that an annular groove (12) is formed in the end cover (1), the shaft hole (11) and the annular groove (12) are coaxially arranged, a ring is formed between the shaft hole (11) and the annular groove (12), a plurality of mounting grooves (13) are formed in the ring along the circumferential direction of the ring, every two adjacent mounting blocks (14) are formed between the mounting grooves (13), and the ball bearing (2) is mounted between the first mounting blocks (14).

2. The micro direct current motor with an integral injection molded end cap of claim 1, wherein: the edge of end cover (1) is provided with collar (15), motor housing (3) cover establish with on collar (15), motor housing (3) have seted up installation breach (31) towards the one side of end cover (1), end cover (1) is provided with second installation piece (16) towards the one side of motor housing (3), second installation piece (16) card is located in installation breach (31).

3. The micro direct current motor with an integral injection molded end cap of claim 2, wherein: the edge that motor housing (3) was kept away from in end cover (1) has seted up installation bayonet socket (17), first mounting hole (32) have been seted up towards the one end of end cover (1) to motor housing (3) lateral wall, breach (33) have been seted up towards the lateral wall of end cover (1) in first mounting hole (32), be formed with fixture block (34) between breach (33) and first mounting hole (32), fixture block (34) laminating card is located on the both sides wall of installation bayonet socket (17).

4. The micro direct current motor with an integral injection molded end cap of claim 2, wherein: the end cover (1) is provided with a second mounting hole (18), one surface, facing the motor shell (3), of the end cover (1) is provided with a first reinforcing block (181), and the first reinforcing block (181) is located at one end, facing the motor shell (3), of the second mounting hole (18) on the end cover (1).

5. The micro direct current motor with an integral injection molded end cap of claim 4, wherein: one face, facing the ball bearing (2), of the first reinforcing block (181) is set to be an inwards concave arc face (182), and one face, facing the inner side wall of the end cover (1), of the first reinforcing block (181), away from the ball bearing (2) extends towards the inner side wall of the end cover (1) and is fixedly connected with the inner side wall of the end cover (1).

6. The micro direct current motor with an integral injection molded end cap of claim 3, wherein: one side, facing the motor shell (3), of the end cover (1) is fixedly provided with a second reinforcing block (171), and the second reinforcing block (171) is located at a position, close to the mounting bayonet (17), of the end cover (1).

7. The micro direct current motor with an integral injection molded end cap of claim 2, wherein: the motor is characterized in that tile magnetic steels (4) are arranged inside the motor shell (3), and a U-shaped elastic sheet (5) is arranged between every two adjacent tile magnetic steels (4).

8. The micro direct current motor with an integral injection molded end cap of claim 7, wherein: the mounting ring (15) extends towards one side of the motor shell (3) and is provided with an arc-shaped positioning piece (19), and the tile magnetic steel (4) is arranged on two sides of the positioning piece (19).