CN215580732U - In-wheel motor and end cover installation mechanism thereof - Google Patents

In-wheel motor and end cover installation mechanism thereof Download PDF

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Publication number
CN215580732U
CN215580732U CN202121958079.0U CN202121958079U CN215580732U CN 215580732 U CN215580732 U CN 215580732U CN 202121958079 U CN202121958079 U CN 202121958079U CN 215580732 U CN215580732 U CN 215580732U
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end cover
rim
connecting piece
limiting groove
tire
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CN202121958079.0U
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Chinese (zh)
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阮王奇
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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Abstract

The utility model belongs to the technical field of hub motors, and particularly relates to a hub motor and an end cover mounting mechanism thereof, which comprise a rim and an end cover mounted on the side part of the rim; the middle part of the rim is provided with a tire limiting groove for mounting a tire, the outer side surface of the tire limiting groove is welded with a plurality of connecting pieces, and the connecting pieces extend outwards and are uniformly arranged along the circumferential direction of the rim; a plurality of positioning holes are formed in the periphery of the end cover, and the connecting piece extends into the corresponding positioning hole and is connected with the locking piece; the end part of the connecting piece is provided with an external thread or an internal thread hole, and the locking piece is a nut or a screw; retaining member and connecting piece cooperation are fixed as an organic whole with end cover and rim. The connecting piece is directly welded at the side part of the tire limiting groove, the structure of the conventional auxiliary steel ring is omitted, and the cost is lower; under the same circumstances, the motor can be done bigger, has stronger power, and the heat that inside produced also directly transmits the rim, and the radiating effect is better.

Description

In-wheel motor and end cover installation mechanism thereof
Technical Field
The utility model belongs to the technical field of hub motors, and particularly relates to a hub motor and an end cover mounting mechanism thereof.
Background
CN201930517431.9 discloses a rim of an in-wheel motor; CN201930517505.9 discloses an in-wheel motor for electric vehicle, the mounting structure of its end cover is: the annular auxiliary steel ring is welded on the inner wall of the rim, a threaded hole is formed in the auxiliary steel ring in a processing mode, the motor end cover is fixed on the auxiliary steel ring through the bolt, and the auxiliary steel ring has the following defects:
1. the auxiliary steel ring can be extruded into the inner wall of the rim by corresponding equipment and then is locally welded; the whole process is complex and needs to occupy certain cost;
2. a gap is inevitably formed between the auxiliary steel ring and the inner wall of the rim, and certain influence is caused on heat dissipation; during the working process of the hub motor, more heat can be generated inside the hub motor and must be timely transmitted to the outside for heat dissipation;
3. the overall structure is more complicated and the cost is higher.
Disclosure of Invention
The utility model aims to provide a simple and reliable hub motor and an end cover mounting mechanism thereof, and the aim of the utility model is realized as follows:
an end cover mounting mechanism of an in-wheel motor comprises a rim and end covers mounted on the side parts of the rim; the middle part of the rim is provided with a tire limiting groove for mounting a tire,
the outer side of the tire limiting groove is welded with a plurality of connecting pieces, and the connecting pieces extend outwards and are uniformly arranged along the circumferential direction of the rim;
a plurality of positioning holes are formed in the periphery of the end cover, and the connecting piece extends into the corresponding positioning hole and is connected with the locking piece;
the end part of the connecting piece is provided with an external thread or an internal thread hole, and the locking piece is a nut or a screw; retaining member and connecting piece cooperation are fixed as an organic whole with end cover and rim.
Preferably, the inner side of the periphery of the end cover is provided with a convex ring, and the convex ring can be embedded into the inner circumferential surface of the tire limiting groove; the distance c between the convex ring and the inner circumferential surface is less than 1 mm.
When the hub motor is assembled, a glue layer is arranged on the edge of the outer side of the convex ring, and the glue layer seals the end cover and the outer wall of the tire limiting groove, so that the inner part is waterproof and sealed; a distance greater than 1mm makes sealing difficult.
Preferably, the distance a between the inner circumferential surface of the tire limiting groove and the air nozzle mounting hole is 3-8 mm. When the thickness is less than 3mm, the waterproof sealing effect of the interior is unstable.
Preferably, the connecting piece is parallel to the central axis of the rim;
the locking piece is a nut, one side of the nut facing the connecting piece is provided with an extending part, and the extending part extends into the positioning hole;
or the locking piece is a screw, the periphery of the positioning hole protrudes outwards to form a screw joint table, and the outer end of the screw joint table is flanged towards the center to form a ring table part; the screw passes through the ring platform portion and is screwed into the internal thread hole of the connecting piece.
Preferably, the inclination b of the side surface of the tire limiting groove is 0-5 degrees.
Preferably, the inclination b of the side surface of the tire limiting groove is 2-3 degrees.
Too big inclination can lead to the bolt welding difficulty, and the welding of the bolt that this inclination corresponds is more convenient, has compromise the processing degree of difficulty of rim simultaneously.
Preferably, a plurality of arc-shaped grooves are formed in the inner side of the edge of the periphery of the end cover; a certain spacing distance is arranged between the arc-shaped grooves, and the positioning holes are arranged in the arc-shaped grooves; the width of the arc-shaped groove is larger than the outer diameter of the connecting piece, so that the connecting piece can slide in the arc-shaped groove.
Preferably, the connecting pieces, the locking pieces and the positioning holes are the same in number, and the number of the connecting pieces, the locking pieces and the positioning holes is 3-8.
An in-wheel motor comprises the end cover mounting structure.
Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:
the connecting piece is directly welded at the side part of the tire limiting groove, the structure of the conventional auxiliary steel ring is omitted, and the cost is lower; under the same circumstances, the motor can be done bigger, has stronger power, and the heat that inside produced also directly transmits the rim, and the radiating effect is better.
The inner side of the periphery of the end cover is provided with a convex ring, and the distance c between the convex ring and the inner circumferential surface is less than 1 mm. When the wheel hub motor is assembled, a glue layer sealing end cover and the outer wall of the tire limiting groove are arranged at the edge of the outer side of the convex ring, so that the inner part is waterproof and sealed.
Due to the design of the arc-shaped groove, an operator can well judge the relative position relationship between the bolt and the positioning hole; the operator can rotate the end cover for in the bolt inserts the arc wall, rotate the end cover again, make the bolt advance to inserting the locating hole along the arc wall, the equipment of being convenient for.
Drawings
FIG. 1 is a schematic diagram of the present invention.
FIG. 2 is a second schematic structural diagram of the present invention.
FIG. 3 is a schematic view of the attachment of the present invention mounted on a wheel rim.
Fig. 4 is a third schematic structural diagram of the present invention.
Fig. 5 is a schematic view of the engagement of the connecting member and the locking member according to the first embodiment.
Fig. 6 is a schematic view showing the engagement of the connecting member and the locking member of the second embodiment.
Fig. 7 is one of the schematic views of the engagement of the connecting member and the locking member of the third embodiment.
Fig. 8 is a second schematic view of the engagement of the connecting member and the locking member of the third embodiment.
Detailed Description
The utility model is further described below with reference to specific examples:
example 1: an end cover mounting mechanism of a hub motor comprises a rim 1 and an end cover 2 mounted on the side of the rim 1; the middle part of the rim 1 is provided with a tire limiting groove 11 for mounting a tire,
the outer side surface of the tire limiting groove 11 is welded with a plurality of connecting pieces 4 which extend outwards and are uniformly arranged along the circumferential direction of the rim 1;
a plurality of positioning holes 22 are formed in the periphery of the end cover 2, and the connecting piece 4 extends into the corresponding positioning hole 22 and is connected with the locking piece 3;
the end part of the connecting piece 4 is provided with an external thread or an internal thread hole, and the locking piece 3 is a nut or a screw; the locking piece 3 is matched with the connecting piece 4 to fix the end cover 2 and the rim 1 into a whole.
The connecting piece is directly welded at the side part of the tire limiting groove, the existing structure of an auxiliary steel ring is eliminated, and the cost is lower; under the same circumstances, the motor can be done bigger, and the heat of inside production also directly transmits the rim, and the radiating effect is better. In the motor industry, the cost of an aluminum wire motor is lower than that of a copper wire motor, and the wire diameter of the aluminum wire motor is larger and needs more space under the condition of the same efficiency and heat load.
Preferably, a convex ring 24 is arranged on the inner side of the periphery of the end cover 2, and the convex ring 24 can be embedded into the inner circumferential surface 14 of the tire limiting groove 11; the distance c between said collar 24 and the inner circumferential surface 14 is less than 1 mm.
When the hub motor is assembled, a glue layer is arranged on the edge of the outer side of the convex ring, and the glue layer seals the end cover and the outer wall of the tire limiting groove, so that the inner part is waterproof and sealed; a distance greater than 1mm makes sealing difficult.
Preferably, a distance a between the inner circumferential surface 14 of the tire stopper groove 11 and the air nozzle mounting hole 13 is 3 to 8 mm. When being less than 3mm, great gap appears easily between air cock mounting hole 13 and the notch 23, leads to inside waterproof sealing effect unstable.
Preferably, the connecting piece 4 and the central axis of the rim 1 are parallel to each other;
preferably, the inclination b of the side surface of the tire limiting groove 11 is 0-5 degrees.
Preferably, the inclination b of the side surface of the tire limiting groove 11 is 2-3 degrees. The inclination is too big, can lead to the bolt welding difficulty, and the welding of the bolt that this inclination corresponds is more convenient, has compromise the processing degree of difficulty of rim simultaneously.
Preferably, a plurality of arc-shaped grooves 21 are arranged on the inner side of the edge of the periphery of the end cover 2; a certain spacing distance is arranged between the arc-shaped grooves 21, and the positioning holes 22 are arranged in the arc-shaped grooves 21; the width of the arc-shaped slot is larger than the outer diameter of the connecting piece 4, so that the connecting piece 4 can slide in the arc-shaped slot.
Aiming at the manual assembly, in the process of installing the end cover into the rim, the bolt cannot be directly inserted into the positioning hole, and the hand feeling of an operator is needed for judgment at the moment; due to the design of the arc-shaped groove, an operator can better judge the relative position relationship between the bolt and the positioning hole; the operator can rotate the end cover for in the bolt inserts the arc wall, rotate the end cover again, make the bolt advance to inserting the locating hole along the arc wall, the equipment of being convenient for.
Preferably, the connecting pieces 4, the locking pieces 3 and the positioning holes 22 are the same in number, and the number of the connecting pieces is 3-8.
Example 2: the locking piece 3 is a nut 3-2, one side of the nut 3-2 facing the connecting piece 4 is provided with an extending part 3-21, and the extending part extends into the positioning hole 22; this design makes retaining member 3 under the prerequisite that satisfies joint strength, and convex height is lower, and the security performance is better.
Example 3: the locking piece 3 is a screw 3-3, the periphery of the positioning hole 22 protrudes outwards to form a screw joint table 3-32, and the outer end of the screw joint table 3-32 is flanged towards the center to form a ring table part 3-31; the screw 3-3 passes through the ring platform part and is screwed into the internal thread hole 5-2 of the connecting piece 4. The design makes the matching between the end cover and the connecting piece 4 more convenient, and the design of the ring platform part 3-31 makes the screw 3-3 more easily screwed into the internal thread hole 5-2.
An in-wheel motor comprises the end cover mounting structure.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims (9)

1. An end cover mounting mechanism of a hub motor comprises a rim (1) and an end cover (2) mounted on the side of the rim (1); the middle part of the rim (1) is provided with a tire limiting groove (11) for mounting a tire, and the utility model is characterized in that,
a plurality of connecting pieces (4) are welded on the outer side surface of the tire limiting groove (11), extend outwards and are uniformly arranged along the circumferential direction of the rim (1);
a plurality of positioning holes (22) are formed in the periphery of the end cover (2), and the connecting piece (4) extends into the corresponding positioning holes (22) and is connected with the locking piece (3);
the end part of the connecting piece (4) is provided with an external thread or an internal thread hole, and the locking piece (3) is a nut or a screw; retaining member (3) and connecting piece (4) cooperation are fixed as an organic whole with end cover (2) and rim (1).
2. The end cover mounting mechanism of the in-wheel motor is characterized in that a convex ring (24) is arranged on the inner side of the periphery of the end cover (2), and the convex ring (24) can be embedded into the inner circumferential surface (14) of the tire limiting groove (11); the distance c between the collar (24) and the inner circumferential surface (14) is less than 1 mm.
3. The end cover mounting mechanism of the in-wheel motor as claimed in claim 1, wherein the distance a between the inner circumferential surface (14) of the tire limiting groove (11) and the air faucet mounting hole (13) is 3-8 mm.
4. An end cap mounting mechanism for an in-wheel motor according to claim 1, characterized in that the connecting piece (4) and the central axis of the rim (1) are parallel to each other;
the locking piece (3) is a nut (3-2), one side of the nut (3-2) facing the connecting piece (4) is provided with an extending part (3-21), and the extending part extends into the positioning hole (22);
or the locking piece (3) is a screw (3-3), the periphery of the positioning hole (22) protrudes outwards to form a screw joint table (3-32), and the outer end of the screw joint table (3-32) is flanged towards the center to form a ring table part (3-31); the screw (3-3) penetrates through the annular table part and is screwed into an internal thread hole (5-2) of the connecting piece (4).
5. The end cover mounting mechanism of the in-wheel motor as claimed in claim 1, wherein the inclination b of the side surface of the tire limiting groove (11) is 0-5 degrees.
6. An end cover mounting mechanism of a hub motor according to claim 5, wherein the inclination b of the side surface of the tire limiting groove (11) is 2-3 degrees.
7. An end cover mounting mechanism of an in-wheel motor according to claim 1, characterized in that a plurality of arc-shaped grooves (21) are arranged on the inner side of the edge of the periphery of the end cover (2); a certain spacing distance is arranged between the arc-shaped grooves (21), and the positioning holes (22) are arranged in the arc-shaped grooves (21); the width of the arc-shaped groove is larger than the outer diameter of the connecting piece (4), so that the connecting piece (4) can slide in the arc-shaped groove.
8. The end cover mounting mechanism of the hub motor is characterized in that the connecting pieces (4), the locking pieces (3) and the positioning holes (22) are the same in number, and the number of the connecting pieces, the locking pieces and the positioning holes is 3-8.
9. An in-wheel motor characterized by: comprising the end cap mount knot mechanism of any of claims 1-4.
CN202121958079.0U 2021-08-19 2021-08-19 In-wheel motor and end cover installation mechanism thereof Active CN215580732U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121958079.0U CN215580732U (en) 2021-08-19 2021-08-19 In-wheel motor and end cover installation mechanism thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121958079.0U CN215580732U (en) 2021-08-19 2021-08-19 In-wheel motor and end cover installation mechanism thereof

Publications (1)

Publication Number Publication Date
CN215580732U true CN215580732U (en) 2022-01-18

Family

ID=79839685

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121958079.0U Active CN215580732U (en) 2021-08-19 2021-08-19 In-wheel motor and end cover installation mechanism thereof

Country Status (1)

Country Link
CN (1) CN215580732U (en)

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