Motor hub of electric vehicle
By setting positioning blocks, clamping blocks and clamping slots between the magnetic ring and rim of the motor hub of the electric vehicle motor, the deflection of the magnetic ring is restricted, and the connection strength is enhanced by strengthening the structure, the problem of deflection of the magnetic ring during welding is solved. Improves the yield and connection strength of the motor hub.
Patent Information
- Application Number
- CN202420935963.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When welding the motor hub of an electric vehicle, the magnetic steel ring is prone to deflection due to the touch of the welding gun, resulting in the axis after welding that does not overlap, resulting in unqualified products and increasing production costs.
Setting positioning blocks, card blocks and card slots between the magnetic ring and the rim, limiting the deflection of the magnetic ring through the coordination between the card block and the card slot, and enhancing the connection strength through structures such as reinforcement ribs and fixing grooves to ensure that the Axial consistency.
It effectively improves the yield rate of the motor hub, enhances the connection strength and compressive strength between the magnet ring and the rim, and reduces the occurrence of unqualified products.
Smart Images
Figure CN222157087U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wheel hubs, in particular to a motor hub for an electric vehicle. Background Art
[0002] Chinese patent with publication number CN209126434U discloses an electric vehicle motor hub, including a rim, and a magnetic steel ring is welded on the inner side of the rim.
[0003] When the operator holds a welding gun to weld the magnetic steel ring to the wheel hub, the welding gun is likely to touch the magnetic steel ring, causing the magnetic steel ring to deflect relative to the rim, so that the axis of the magnetic steel ring after welding does not coincide with the axis of the rim. The motor hub whose axis of the magnetic steel ring does not coincide with the axis of the rim is a defective product, and the magnetic steel ring needs to be knocked off the rim and re-welded later, which increases the production cost. Utility Model Content
[0004] The present application provides an electric vehicle motor hub, which can limit the position of a magnetic steel ring and a rim during welding, thereby improving the yield rate of the motor hub production.
[0005] The electric vehicle motor hub provided in this application adopts the following technical solution:
[0006] An electric vehicle motor hub comprises a rim and a magnetic steel ring, wherein the diameter of the rim gradually increases from the middle to both sides, a positioning block is provided on the inner wall of the rim, a clamping block is provided on the end of the positioning block away from the rim, a clamping groove is provided on the inner wall of the magnetic steel ring along the axis of the magnetic steel ring, the clamping block is engaged with the clamping groove, and when the clamping block contacts the bottom wall of the clamping groove, one end face of the magnetic steel ring contacts the positioning block.
[0007] By adopting the above technical solution, before welding the product, the slot of the magnetic steel ring is aligned with the block, and then the magnetic steel ring is pressed into the rim so that the block is inserted into the slot and one end face of the magnetic steel ring contacts the positioning block. At this time, the block and the positioning block will limit the deflection of the magnetic steel ring. Even if the welding gun touches the magnetic steel ring during welding, it is not easy to deflect, so that the product after welding meets the requirements and the product yield is improved.
[0008] Preferably, there are at least four positioning blocks, and several of the positioning blocks are circumferentially distributed on the inner wall of the rim.
[0009] By adopting the above technical solution, after the magnetic steel ring and the rim are welded, the positioning block, the clamping block and the clamping groove will form a connection reinforcement structure to improve the connection strength between the magnetic steel ring and the rim.
[0010] Preferably, the bottom ends of the plurality of positioning blocks are protruded toward both sides to form first reinforcing ribs connected to the rim, and the diameters of the plurality of first reinforcing ribs are gradually reduced from one end close to the rim to one end far from the rim.
[0011] By adopting the above technical solution, the connection strength between the positioning block and the rim is improved, and the connection between the clamping block and the clamping slot is made stronger.
[0012] Preferably, the ends of a plurality of the first reinforcing ribs away from the positioning block are connected to each other to form a reinforcing ring, and the axis of the reinforcing ring coincides with the axis of the rim.
[0013] By adopting the above technical solution, the compressive strength of the rim is improved while the connection strength between the positioning block and the rim is ensured.
[0014] Preferably, a second reinforcing rib is provided between the clamping block and the positioning block, the second reinforcing rib is located on the side of the clamping block away from the center of the rim, one end of the second reinforcing rib is connected to the positioning block, and the other end is connected to the clamping block.
[0015] By adopting the above technical solution, the connection strength between the positioning block and the clamping block is further enhanced.
[0016] Preferably, a plurality of first fixing grooves are provided on the rim in a direction perpendicular to the axis of the rim, and a plurality of second fixing grooves are provided on the outer wall of the magnetic steel ring in a direction perpendicular to the axis of the magnetic steel ring. A plurality of first fixing grooves are each provided with a fixing block, and one end of a plurality of the fixing blocks respectively extends into a plurality of second fixing grooves. The magnetic steel ring is also provided with a plurality of fixing members for fixing the plurality of fixing blocks in the plurality of second fixing grooves, and when the blocking block conflicts with the bottom wall of the blocking groove, the plurality of first fixing grooves are respectively connected to the plurality of second fixing grooves.
[0017] By adopting the above technical solution, the fixing block is fixed in the first fixing groove and the second fixing groove by the fixing member, so that the connection strength between the rim and the magnetic steel ring can be enhanced.
[0018] Preferably, a plurality of first threaded holes are provided on the inner wall of the magnetic steel ring in a direction perpendicular to the axis of the magnetic steel ring, and the plurality of first threaded holes are respectively connected to a plurality of second fixing grooves, and a plurality of second threaded holes are provided on a surface of the fixing blocks facing the bottom wall of the second fixing groove, and the plurality of first threaded holes are respectively connected to a plurality of second threaded holes, and the fixing members are bolts, and the plurality of bolts are respectively threadedly connected in the first threaded holes and the second threaded holes that are connected to each other.
[0019] By adopting the above technical solution, the fixing block can be confined in the first fixing groove and the second fixing groove by threading the threaded bolt into the first threaded hole and the second threaded hole, thereby preventing the first clamping block from detaching from the second fixing groove during the movement of the electric vehicle.
[0020] The technical effects of this utility model are mainly reflected in the following aspects:
[0021] 1. The utility model limits the deflection of the magnetic steel ring by the cooperation of the stopper, the clamping block and the clamping slot, thereby ensuring the yield rate;
[0022] 2. The utility model provides a first reinforcement ring to improve the connection strength between the plurality of blocks and the rim while also improving the compressive strength of the rim;
[0023] 3. The utility model restricts the fixing block in the first fixing groove and the second fixing groove by bolts to enhance the connection strength between the rim and the magnetic steel ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the structure of this application.
[0025] Figure 2 yes Figure 1 Cross-sectional view of the middle hub along line AA.
[0026] Figure 3 yes Figure 2 A partial enlarged view of point B in the middle.
[0027] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle rim.
[0028] Figure 5 yes Figure 1 Cross-sectional view of the middle hub along line CC.
[0029] Figure 6 yes Figure 5 A partial enlarged view of point D in the middle.
[0030] Figure numerals: 1, rim; 11, positioning block; 12, clamping block; 13, first reinforcing rib; 14, reinforcing ring; 15, second reinforcing rib; 16, first fixing groove; 2, magnetic steel ring; 21, clamping groove; 22, second fixing groove; 23, first threaded hole; 3, fixing block; 31, second threaded hole; 4, fixing piece; 41, bolt. DETAILED DESCRIPTION
[0031] The present application is further described in detail below in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.
[0032] Reference Figure 1-Figure 4The electric vehicle motor hub of the present embodiment includes a rim 1 and a magnetic steel ring 2. The diameter of the rim 1 gradually increases from the middle to the two sides. Four positioning blocks 11 are fixedly connected to the inner wall of the rim 1. The four positioning blocks 11 are equidistantly distributed on the inner wall of the rim 1 in the circumferential direction. A clamping block 12 is fixedly connected to the end of the four positioning blocks 11 away from the rim 1. Second reinforcing ribs 15 are arranged between the four clamping blocks 12 and the four positioning blocks 11. The four second reinforcing ribs 15 are respectively located on the side of the four clamping blocks 12 away from the center of the rim 1. Four card slots 21 are opened on the inner wall of the magnetic steel ring 2 along the axis of the magnetic steel ring 2. The four card slots 21 are respectively engaged with the four card blocks 12.
[0033] Reference Figure 1-Figure 4 The bottom ends of the four positioning blocks 11 are protruded toward both sides to form first reinforcing ribs 13 connected to the rim 1, and the diameters of the eight first reinforcing ribs 13 gradually decrease from the end close to the rim 1 to the end away from the rim 1. The ends of the eight first reinforcing ribs 13 away from the corresponding positioning blocks 11 are connected to each other to form a reinforcing ring 14, and the axis of the reinforcing ring 14 coincides with the axis of the rim 1.
[0034] Reference Figure 1-Figure 4 Before welding the product, align the four slots 21 of the magnetic steel ring 2 with the four blocks 12, and then press the magnetic steel ring 2 into the rim 1, so that the four blocks 12 are inserted into the four slots 21, and at the same time, one side end face of the magnetic steel ring 2 contacts the four positioning blocks 11. The deflection of the magnetic steel ring 2 is limited by the cooperation of the four blocks 12, the four positioning blocks 11 and the four slots 21. Even if the welding gun touches the magnetic steel ring 2 during welding, the magnetic steel ring 2 is not easy to deflect, so that the welded product meets the requirements and improves the product yield.
[0035] Reference Figure 1 Figure 4- Figure 6 Four first fixing grooves 16 are provided on the rim 1 along a direction perpendicular to the axis of the rim 1. The four first fixing grooves 16 are equidistantly distributed on the rim 1 in the circumferential direction. Meanwhile, the four first fixing grooves 16 and the four positioning blocks 11 are staggered. Four second fixing grooves 22 are provided on the outer wall of the magnetic steel ring 2 along a direction perpendicular to the axis of the magnetic steel ring 2. The four second fixing grooves 22 are equidistantly distributed on the outer wall of the magnetic steel ring 2 in the circumferential direction. When the four clamping blocks 12 are inserted into the four clamping grooves 21 and contact the bottom walls of the four clamping grooves 21, the four first fixing grooves 16 are connected to the four second fixing grooves 22 respectively.
[0036] Reference Figure 1 Figure 4- Figure 6, a fixing block 3 is installed in each of the four first fixing grooves 16, and one end of the four fixing blocks 3 extends into the four second fixing grooves 22 respectively and conflicts with the bottom walls of the four second fixing grooves 22. Four first threaded holes 23 are opened on the inner wall of the magnetic steel ring 2 in a direction perpendicular to the axis of the magnetic steel ring 2, and the four first threaded holes 23 are connected to the four second fixing grooves 22 respectively. Second threaded holes 31 are opened on the side of the four fixing blocks 3 facing the bottom wall of the corresponding second fixing groove 22 in a direction perpendicular to the axis of the magnetic steel ring 2, and the four first threaded holes 23 are connected to the four second threaded holes 31 respectively.
[0037] Reference Figure 1 Figure 4- Figure 6 , the magnetic steel ring 2 is also provided with four fixing members 4 for fixing the four fixing blocks 3 in the four second fixing grooves 22 respectively. The fixing members 4 are bolts 41. The four bolts 41 are respectively threadedly connected in the first threaded holes 23 and the second threaded holes 31 that are connected to each other. When the four fixing blocks 3 are respectively in conflict with the bottom walls of the second fixing grooves 22 and are restricted in the four second clamping grooves 21 by the four bolts 41, the ends of the four fixing blocks 3 away from the magnetic steel ring 2 are flush with the outer surface of the rim 1. After the four fixing blocks 3 are limited by the four bolts 41, a welding gun can be used to weld the ends of the four fixing blocks 3 away from the magnetic steel ring 2 to the rim 1, which further limits the four fixing blocks 3.
[0038] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.
Claims
1. An electric vehicle motor hub, comprising a rim (1) and a magnetic steel ring (2), wherein the diameter of the rim (1) gradually increases from the middle to both sides, and is characterized in that: A positioning block (11) is provided on the inner wall of the wheel rim (1), a clamping block (12) is provided on one end of the positioning block (11) away from the wheel rim (1), a clamping groove (21) is provided on the inner wall of the magnetic steel ring (2) along the axis direction of the magnetic steel ring (2), the clamping block (12) is clamped and matched with the clamping groove (21), and when the clamping block (12) contacts the bottom wall of the clamping groove (21), one end face of the magnetic steel ring (2) contacts the positioning block (11).
2. The electric vehicle motor hub according to claim 1, characterized in that: There are at least four positioning blocks (11), and a plurality of the positioning blocks (11) are circumferentially distributed on the inner wall of the rim (1).
3. The electric vehicle motor hub according to claim 2, characterized in that: The bottom ends of the plurality of positioning blocks (11) are protruded toward both sides to form first reinforcing ribs (13) connected to the rim (1), and the diameters of the plurality of first reinforcing ribs (13) gradually decrease from an end close to the rim (1) to an end far from the rim (1).
4. The electric vehicle motor hub according to claim 3, characterized in that: The ends of the first reinforcing ribs (13) away from the positioning block (11) are connected to each other to form a reinforcing ring (14), and the axis of the reinforcing ring (14) coincides with the axis of the rim (1).
5. The electric vehicle motor hub according to claim 1, characterized in that: A second reinforcing rib (15) is provided between the clamping block (12) and the positioning block (11); the second reinforcing rib (15) is located on a side of the clamping block (12) away from the center of the rim (1); one end of the second reinforcing rib (15) is connected to the positioning block (11) and the other end is connected to the clamping block (12).
6. The electric vehicle motor hub according to claim 1, characterized in that: The wheel rim (1) is provided with a plurality of first fixing grooves (16) in a direction perpendicular to the axis of the wheel rim (1); the outer wall of the magnetic steel ring (2) is provided with a plurality of second fixing grooves (22) in a direction perpendicular to the axis of the magnetic steel ring (2); a fixing block (3) is provided in each of the first fixing grooves (16); one end of each of the fixing blocks (3) extends into each of the second fixing grooves (22); the magnetic steel ring (2) is further provided with a plurality of fixing members (4) for fixing the fixing blocks (3) in each of the second fixing grooves (22); when the clamping block (12) contacts the bottom wall of the clamping groove (21), the plurality of first fixing grooves (16) are connected to the plurality of second fixing grooves (22).
7. The electric vehicle motor hub according to claim 6, characterized in that: A plurality of first threaded holes (23) are provided on the inner wall of the magnetic steel ring (2) in a direction perpendicular to the axis of the magnetic steel ring (2), and the plurality of first threaded holes (23) are respectively connected to the plurality of second fixing grooves (22); a plurality of second threaded holes (31) are provided on a surface of the fixing blocks (3) facing the bottom wall of the second fixing grooves (22), and the plurality of first threaded holes (23) are respectively connected to the plurality of second threaded holes (31); the fixing member (4) is a bolt (41), and the plurality of bolts (41) are respectively threadedly connected to the first threaded holes (23) and the second threaded holes (31) that are connected to each other.