CN215378612U - Motor end cover - Google Patents
Motor end cover Download PDFInfo
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- CN215378612U CN215378612U CN202120943164.3U CN202120943164U CN215378612U CN 215378612 U CN215378612 U CN 215378612U CN 202120943164 U CN202120943164 U CN 202120943164U CN 215378612 U CN215378612 U CN 215378612U
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- end cover
- motor
- cover body
- spigot
- mounting hole
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Abstract
The disclosure provides a motor end cover, and belongs to the field of motors. The motor end cover comprises an end cover body; the end cover body is a bakelite injection molding integrated structure, a bearing mounting hole is formed in the middle of the end cover body and penetrates through two opposite sides of the end cover body, an end cover spigot used for being inserted into a motor shell in an interference mode is arranged on one side of the end cover body, and the end cover spigot is coaxial with the bearing mounting hole. Through the motor end cover that this disclosed embodiment provided, can reduce the processing cost of motor end cover, can improve the leakproofness of assembly again simultaneously.
Description
Technical Field
The disclosure relates to the field of motors, in particular to a motor end cover.
Background
In the motor, the motor end cover is used for being matched with the motor shell and the bearing so as to prevent dust and water vapor in air from entering the interior of the motor.
In the related art, when the motor end cover is installed with the motor housing, an end cover spigot is generally machined on the motor end cover, and then the end cover spigot and the opening of the motor housing are matched and installed together.
However, in order to ensure the tight connection between the motor end cover and the motor housing, the end cover seam allowance needs to be finished, which results in a prolonged processing period of the motor end cover and further increases the processing cost.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides a motor end cover, which can reduce the processing cost of the motor end cover and improve the sealing property of assembly. The technical scheme is as follows:
the embodiment of the disclosure provides a motor end cover, which comprises an end cover body; the end cover body is a bakelite injection molding integrated structure, a bearing mounting hole is formed in the middle of the end cover body and penetrates through two opposite sides of the end cover body, an end cover spigot used for being inserted into a motor shell in an interference mode is arranged on one side of the end cover body, and the end cover spigot is coaxial with the bearing mounting hole.
In yet another implementation of the present disclosure, the motor end cap further includes a plurality of spigot bosses; the plurality of seam allowance protrusions are arranged at intervals along the circumferential direction of the end cover seam allowance and connected to the outer circumferential wall of the end cover seam allowance.
In another implementation manner of the present disclosure, the spigot protrusion is an arc-shaped strip-shaped structural member, and a length direction of the spigot protrusion extends along a circumferential direction of the end cap spigot, the spigot protrusion has a plurality of ribs arranged at intervals, and a length direction of the ribs is an axial direction of the end cap spigot.
In yet another implementation of the present disclosure, the motor end cap further comprises a plurality of bearing hole protrusions; the plurality of bearing hole bulges are arranged at intervals along the circumferential direction of the bearing mounting hole and connected to the inner circumferential wall of the bearing mounting hole.
In another implementation manner of the present disclosure, the bearing hole protrusion is an elongated block-shaped structural member, and a length direction of the bearing hole protrusion extends along an axial direction of the bearing mounting hole.
In another implementation of the present disclosure, the end cap body has at least two fixing holes for inserting fasteners;
the at least two fixing holes are respectively positioned on two sides of the bearing mounting hole and penetrate through two opposite sides of the end cover body.
In still another implementation manner of the present disclosure, the two cable through holes are respectively located at both sides of the bearing mounting hole and extend in a direction perpendicular to an axis of the bearing mounting hole, one end of the cable through hole penetrates through the outer circumferential wall of the end cover body, and the other end of the cable through hole penetrates through the inner circumferential wall of the end cover body.
In another implementation of the disclosure, a side of the end cap body away from the end cap seam allowance is provided with a plurality of reinforcing ribs along a radial direction of the side.
In yet another implementation of the present disclosure, the end cap body has a plurality of heat dissipation holes formed therein, and the heat dissipation holes penetrate through opposite sides of the end cap body.
In another implementation manner of the present disclosure, the motor end cover further includes at least one temperature protector connecting column, the temperature protector connecting column and the end cover seam allowance are located on the same side of the end cover body, an axial direction of the temperature protector connecting column is parallel to an axial direction of the end cover seam allowance, and one end of the temperature protector connecting column is connected to the end cover body.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
the motor end cover that this disclosed embodiment provided is when assembling with bearing and motor casing, because this motor end cover adopts bakelite injection moulding, so end cover tang and bearing mounting hole are the bakelite structure, like this end cover tang and motor casing, when bearing mounting hole and bearing carry out interference fit, can be through the bakelite material under the excessive pressure equipment of bearing and motor casing of metal construction, and make and produce good pretightning force between the two, finally improve the compactness of this motor end cover in the assembling process, can avoid the secondary finish machining of motor end cover simultaneously again.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a front view of a motor end cover provided by an embodiment of the present disclosure;
fig. 2 is a top view of a motor end cap provided by an embodiment of the present disclosure;
fig. 3 is a sectional view taken along a-a of fig. 2.
The symbols in the drawings represent the following meanings:
1. an end cap body; 11. a bearing mounting hole; 12. end cover rabbets; 13. a fixing hole; 14. perforating a cable; 15. reinforcing ribs; 16. heat dissipation holes; 17. a fan-shaped convex ring;
2. a spigot bulge; 21. a rib; 3. the bearing hole is convex; 4. the temperature protector spliced pole.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The embodiment of the present disclosure provides a motor end cover, as shown in fig. 1, the motor end cover includes an end cover body 1. The end cover body 1 is a bakelite injection molding integrated structure, the middle part of the end cover body 1 is provided with a bearing mounting hole 11, the bearing mounting hole 11 penetrates through two opposite sides of the end cover body 1, one side of the end cover body 1 is provided with an end cover spigot 12 inserted in a motor shell in an interference manner, and the end cover spigot 12 is coaxial with the bearing mounting hole 11.
The motor end cover that this disclosed embodiment provided is when assembling with bearing and motor casing, because this motor end cover adopts bakelite injection moulding, so end cover tang 12 and bearing mounting hole 11 are the bakelite structure, like this end cover tang 12 and motor casing, when bearing mounting hole 11 and bearing carry out interference fit, can be through bakelite material under the excessive pressure equipment of bearing and motor casing of metal construction, and make and produce good pretightning force between the two, finally improve the compactness of this motor end cover in the assembling process, can avoid the secondary finish machining of motor end cover simultaneously again.
The motor end cover provided by the embodiment of the disclosure has the advantages of simple structure, convenience in manufacturing, low processing cost and wide application.
Illustratively, the motor end cover provided by the embodiment of the disclosure is a rear end cover of a motor, and the motor end cover is used for fixing and supporting a motor rotating shaft. That is, the motor end cap mates with the bearing while being assembled with the motor housing.
Fig. 2 is a top view of a motor end cover provided by an embodiment of the present disclosure, and in conjunction with fig. 2, optionally, the end cover body 1 has at least two fixing holes 13 for inserting fasteners. At least two fixing holes 13 are respectively located on two sides of the bearing mounting hole 11 and penetrate through two opposite sides of the end cover body 1.
The fixing holes 13 are used for being matched with fasteners to install the end cover body 1 and the motor shell together, and the relative outside of the motor is in a closed state.
Illustratively, the fasteners may be bolts, nuts, metal washers, and the like. Wherein, the bolt is the shock attenuation bolt.
In this embodiment, when the fastener is assembled, the grounding wire can be connected with the motor shell together, so that the motor can be conveniently grounded.
Fig. 3 is a sectional view along a-a of fig. 2, and in combination with fig. 3, the end cap body 1 optionally has two cable through holes 14. The two cable through holes 14 are respectively located on two sides of the bearing mounting hole 11 and extend in a direction perpendicular to the axis of the bearing mounting hole 11, one end of each cable through hole 14 penetrates through the outer peripheral wall of the end cover body 1, and the other end of each cable through hole 14 penetrates through the inner peripheral wall of the end cover body 1.
The cable through hole 14 is used for accommodating an external wire of the motor, and the external wire is conveniently connected with an internal structure of the motor.
In this embodiment, the number of the external wires is 2, and the 2 external wires are respectively arranged in one-to-one correspondence with the two cable through holes 14, wherein one external wire is used for being electrically connected with the live wire, and the other external wire is used for being electrically connected with the zero line.
Referring again to fig. 2, optionally, the side of the end cap body 1 away from the end cap seam allowance 12 is provided with a plurality of reinforcing ribs 15 along the radial direction.
By arranging a plurality of reinforcing ribs 15 on the outer wall of the end cover body 1 along the radial direction, the end cover body 1 has enough strength and strength to support and fix the bearing and the rotating shaft when in interference fit with the motor shell and the bearing.
Illustratively, eight reinforcing ribs 15 can be provided, eight reinforcing ribs 15 are uniformly distributed on a side surface of the end cover body 1 away from the end cover spigot 12, one end of each of the eight reinforcing ribs 15 is connected to the outer peripheral wall of the bearing mounting hole 11, and the other end of each of the eight reinforcing ribs 15 is connected to the outer edge of the end cover body 1.
By arranging the eight reinforcing ribs 15, when the bearing mounting hole 11 is mounted together with the bearing, the bearing is supported by ensuring enough strength in the peripheral circumferential direction of the bearing mounting hole 11, and the end cover body 1 cannot be damaged due to strong rotation of the bearing.
Optionally, the end cap body 1 has a plurality of heat dissipation holes 16, and the heat dissipation holes 16 penetrate through two opposite sides of the end cap body 1.
The end cover body 1 is provided with the plurality of heat dissipation holes 16, so that heat inside the end cover body 1 and the motor shell can be dissipated quickly, and the influence on the use performance of the motor due to too high temperature of the motor is avoided.
Illustratively, the heat dissipation holes 16 may be located between two adjacent reinforcing ribs 15. Therefore, on one hand, the motor end cover has strong enough strength, on the other hand, the number of the heat dissipation holes 16 can be increased, and the heat dissipation efficiency is improved.
Optionally, one side of the end cover body 1 is further provided with a sector-shaped convex ring 17, the sector-shaped convex ring 17 is coaxially connected to the periphery of the bearing mounting hole 11, and the peripheral wall of the sector-shaped convex ring 17 is connected to one end of each reinforcing rib 15.
The fan-shaped convex ring 17 is used for clamping with an external tool so as to conveniently insert the end cover body 1 into the motor shell in an interference manner.
Referring again to fig. 1, optionally, the motor end cap further includes a plurality of spigot projections 2. A plurality of tang archs 2 are arranged along the circumference interval of end cover tang 12, and connect on the periphery wall of end cover tang 12.
When the motor end cover is in cooperation with the motor casing, through a plurality of tang archs 2 on the end cover tang 12, can carry out the conquassation back and closely cooperate with the motor casing under the effect of invariable hold-down force to improve the leakproofness of motor end cover between with the motor casing.
Illustratively, the seam allowance bulge 2 is 4-8 strips. 4 ~ 8 tang archs 2 evenly arrange on the periphery wall of end cover tang 12.
Optionally, the spigot protrusion 2 is an arc-shaped strip-shaped structural member, and the length direction of the spigot protrusion 2 extends along the circumferential direction of the end cover spigot 12, the spigot protrusion 2 has a plurality of ribs 21 arranged at intervals, and the length direction of the ribs 21 is along the axial direction of the end cover spigot 12.
The spigot protrusion 2 is an arc-shaped strip-shaped structural part, so that the spigot protrusion 2 and the end cover body 1 can be conveniently formed by injection molding, and the processing cost is reduced. And extend the length direction of tang arch 2 along the circumference of end cover tang 12, can make tang arch 2 when with the pressure equipment of motor casing like this, area of contact increase, and then increase the pretightning force between motor casing and the end cover tang 12, improve the compactness between motor casing and the end cover tang 12. At the same time, the bead 21 can guide the spigot protrusion 2 to be crushed rapidly.
Referring again to fig. 3, optionally, the motor end cover further includes a plurality of bearing hole bosses 3. A plurality of protruding 3 of dead eye arrange along the circumference interval of bearing mounting hole 11, and a plurality of protruding 3 of dead eye connect respectively on the internal perisporium of bearing mounting hole 11.
When the motor end cover is matched with the bearing, the motor end cover can be tightly matched with the peripheral wall of the bearing after being crushed under the action of constant pressure force through the plurality of bearing hole bulges 3 on the bearing mounting hole 11, so that the sealing property between the motor end cover and the bearing is improved.
Alternatively, the bearing hole protrusion 3 is an elongated block-shaped structural member, and the length direction of the bearing hole protrusion 3 extends along the circumferential direction of the bearing mounting hole 11.
Protruding 3 of dead eye is rectangular massive structure, can make things convenient for dead eye protruding 3 and the integrative injection moulding of end cover body 1, reduces the processing cost.
Referring to fig. 1 again, optionally, the motor end cover further includes at least one temperature protector connecting column 4, the temperature protector connecting column 4 and the end cover seam allowance 12 are located on the same side of the end cover body 1, an axial direction of the temperature protector connecting column 4 is parallel to an axial direction of the end cover seam allowance 12, and one end of the temperature protector connecting column 4 is connected to the end cover body 1.
Because the motor end cover is arranged at a heating part close to the commutator and the electric brush, the temperature protector connecting column 4 is arranged in the motor end cover, so that the temperature protector can be conveniently installed, the motor is controlled by the temperature protector, and accidents of the motor caused by overhigh temperature are prevented.
Optionally, the motor end cover further includes a heat conduction coating, where the heat conduction coating is a heat conduction silica gel layer coated on the outer surface of the end cover body 1.
The heat conduction coating is used for increasing the heat conductivity of the motor end cover, so that the heat inside the end cover body 1 and the motor shell is quickly dissipated, and the influence on the performance of the motor due to too high temperature of the motor is avoided.
The operation of the motor end cover provided by the embodiment is briefly described as follows:
firstly, injection molding is carried out on bakelite to obtain the motor end cover.
Then, aim at motor housing with this motor end cover, aim at bearing mounting hole and bearing simultaneously, peg graft in electrode housing through end cover tang 12 interference, bearing interference pegs graft in bearing mounting hole 11 simultaneously, through a plurality of tang archs 2 on the end cover tang 12 and a plurality of bearing hole archs 3 on the bearing mounting hole 11, can carry out the conquassation back under the effect of the constant pressure force, closely cooperate with motor housing and bearing outer wall respectively, thereby improve the leakproofness of motor end cover assembly.
Exemplary, the embodiment of the present disclosure also provides an electric machine, which includes the above-described electric machine end cover.
The above description is meant to be illustrative of the principles of the present disclosure and not to be taken in a limiting sense, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.
Claims (10)
1. A motor end cover is characterized by comprising an end cover body (1);
the end cover comprises an end cover body (1) and is characterized in that the end cover body (1) is an bakelite injection molding integrated structure, a bearing mounting hole (11) is formed in the middle of the end cover body (1), the bearing mounting hole (11) penetrates through two opposite sides of the end cover body (1), an end cover spigot (12) inserted in a motor shell in an interference mode is arranged on one side of the end cover body (1), and the end cover spigot (12) is coaxial with the bearing mounting hole (11).
2. The motor end cover according to claim 1, further comprising a plurality of spigot bosses (2);
the plurality of seam allowance protrusions (2) are arranged at intervals along the circumferential direction of the end cover seam allowance (12) and connected to the outer circumferential wall of the end cover seam allowance (12).
3. The end cover of the motor according to claim 2, wherein the spigot protrusion (2) is an arc-shaped strip-shaped structure, the length direction of the spigot protrusion (2) extends along the circumferential direction of the end cover spigot (12), the spigot protrusion (2) is provided with a plurality of ribs (21) which are arranged at intervals, and the length direction of the ribs (21) is along the axial direction of the end cover spigot (12).
4. The motor end cover according to claim 1, further comprising a plurality of bearing hole bosses (3);
the plurality of bearing hole bulges (3) are arranged at intervals along the circumferential direction of the bearing mounting hole (11) and connected to the inner circumferential wall of the bearing mounting hole (11).
5. The end cover of the motor according to claim 4, wherein the bearing hole protrusion (3) is an elongated block-shaped structural member, and the length direction of the bearing hole protrusion (3) extends in the axial direction of the bearing mounting hole (11).
6. An end cover for an electric machine according to any one of claims 1-5, characterized in that the end cover body (1) has at least two fixing holes (13) for inserting fasteners;
the at least two fixing holes (13) are respectively located on two sides of the bearing mounting hole (11) and penetrate through two opposite sides of the end cover body (1).
7. An end cover for an electric machine according to any one of claims 1-5, characterized in that the end cover body (1) has two cable perforations (14);
the two cable through holes (14) are respectively located on two sides of the bearing mounting hole (11) and extend in a direction perpendicular to the axis of the bearing mounting hole (11), one end of each cable through hole (14) penetrates through the outer peripheral wall of the end cover body (1), and the other end of each cable through hole (14) penetrates through the inner peripheral wall of the end cover body (1).
8. An end cover for an electric motor according to any one of claims 1-5, characterized in that the side of the end cover body (1) remote from the end cover spigot (12) has a plurality of ribs (15) along its radial direction.
9. An electric machine end cap according to any of claims 1-5, characterized in that the end cap body (1) has a plurality of heat dissipation holes (16), the heat dissipation holes (16) penetrating through opposite sides of the end cap body (1).
10. The motor end cover according to any one of claims 1-5, characterized in that the motor end cover further comprises at least one temperature protector connecting column (4), the temperature protector connecting column (4) and the end cover spigot (12) are located on the same side of the end cover body (1), the axial direction of the temperature protector connecting column (4) is parallel to the axial direction of the end cover spigot (12), and one end of the temperature protector connecting column (4) is connected with the end cover body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120943164.3U CN215378612U (en) | 2021-04-30 | 2021-04-30 | Motor end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120943164.3U CN215378612U (en) | 2021-04-30 | 2021-04-30 | Motor end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215378612U true CN215378612U (en) | 2021-12-31 |
Family
ID=79629029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120943164.3U Active CN215378612U (en) | 2021-04-30 | 2021-04-30 | Motor end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215378612U (en) |
-
2021
- 2021-04-30 CN CN202120943164.3U patent/CN215378612U/en active Active
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