Double locking mechanism for hub and end cover of electric vehicle

Abstract

The utility model relates to an electric vehicle hub and end cover double locking mechanism, which belongs to the field of electric vehicle accessories and is characterized in that a groove is arranged on the right side surface of a hub, 3-12 buckles are uniformly arranged on the right side surface of the groove, a locking hole is arranged in the center of each buckle, and the center of the left side surface of the hub is movably connected with a middle shaft through a bearing; 3-12 spigots are uniformly formed in the edge of the end cover, screw holes are formed in the centers of the spigots, a brake drum is arranged on the right side face of the end cover, a supporting ring and a bearing position are arranged on the left side face of the end cover, a rubber sealing ring is installed on the supporting ring, and the bearing position is movably connected with a middle shaft through a bearing. The spigot is installed in the groove, the spigot and the buckle are mutually locked, the bolt penetrates through the locking hole and is meshed with the screw hole, the spigot and the buckle are secondarily locked, and the left side face of the end cover and the right side face of the hub are mutually sealed through the rubber sealing ring.

Description

Technical Field

[0001] The utility model discloses a double locking mechanism for an electric vehicle wheel hub and an end cover, belonging to the field of electric vehicle accessories, and relates to a double locking mechanism between the wheel hub and the end cover through a buckle and a bolt. Background Art

[0002] The wheel hub of an electric vehicle is a basin-shaped shell used to support the steel rim and install the central axis. At present, the wheel hub of electric vehicles is divided into two types: aluminum alloy and iron. The electric vehicle wheel hub made of aluminum alloy has two end covers, that is, one end cover is installed on each side of the wheel hub. The advantages are easy disassembly and light weight, and the disadvantages are poor sealing performance and easy oil leakage. The electric vehicle wheel hub made of iron has only one end cover, that is, the wheel hub and the end cover on one side are integrated, and the end cover on the other side is connected to the wheel hub by bolts. The advantages are simple production, low cost, and good pressure resistance. The disadvantages are that the bolts are easy to loosen and easy to leak oil. In summary, there is a need for an electric vehicle wheel hub that is simple to produce, low cost, has good sealing performance, and is not easy to leak oil.

[0003] Application number: 2023214283388 A sealing structure of a wheel hub cover of an electric vehicle with a long service life, comprising a sealing member, a wheel hub is sleeved on one side of the sealing member, an end cap is embedded on the outer wall of one side of the sealing member, the sealing member comprises a sealing ring, a groove is provided inside the sealing ring, and an air bag is embedded inside the groove, a plug hole is provided on the outer wall of one side of the sealing member, a valve plugged into the plug hole is provided on the outer wall of one side of the air bag, through holes distributed in an annular structure at equal distances are provided on the outer wall of one side of the sealing ring, and a ring body is integrally formed on the outer wall of one side of the sealing ring. When the elasticity of the sealing member is reduced, gas can be injected into the air bag through the valve, so that the sealing member is bulged by the bulging air bag, so that the elasticity of the sealing member rebounds and continues to stick to the end cap and the wheel hub, thereby ensuring the sealing between the wheel hub and the end cap, and improving the service life of the sealing structure.

[0004] The above-mentioned prior art sealing structure of an electric vehicle hub cover with a long service life adopts a seal, a hub, an end cover, a sealing ring, a groove, an airbag, a jack, a valve, a through hole, and a ring body to ensure the sealing between the hub and the end cover, thereby increasing the service life of the sealing structure. Utility Model Content

[0005] The utility model discloses a double locking mechanism for an electric vehicle wheel hub and an end cover, which adopts a washbasin-shaped wheel hub. An annular groove is arranged on the edge of the right side surface of the wheel hub. A plurality of buckles are evenly arranged on the right side surface of the groove. The buckles and the stoppers on the edge of the disc-shaped end cover are locked with each other. After the buckles and the stoppers are locked, secondary locking is performed through bolts and thread holes outside the buckles to prevent the stoppers from falling off, thereby achieving a double locking effect.

[0006] The technical scheme of the utility model is as follows: a double locking mechanism of an electric vehicle wheel hub and an end cover comprises a wheel hub 1, a groove 7 is arranged on the right side of the wheel hub 1, 3-12 buckles 2 are evenly arranged on the right side of the groove 7, a locking hole 8 is arranged in the center of the buckle 2, the center of the left side of the wheel hub 1 is movably connected with the central axis 6 through a bearing, 3-12 stoppers 10 are evenly arranged on the edge of the end cover 3, a thread hole 9 is arranged in the center of the stopper 10, a brake drum 4 is arranged on the right side of the end cover 3, a support ring 11 and a bearing position 13 are arranged on the left side of the end cover 3, a rubber sealing ring 12 is installed on the support ring 11, the bearing position 13 is movably connected with the central axis 6 through a bearing, the stopper 10 is installed inside the groove 7, the stopper 10 and the buckle 2 are locked with each other, the bolt 5 passes through the locking hole 8 and the thread hole 9 to engage with each other for secondary locking between the stopper 10 and the buckle 2, and the left side of the end cover 3 is sealed with the right side of the wheel hub 1 through the rubber sealing ring 12.

[0007] Furthermore, the wheel hub 1 is in a basin shape, with an annular steel ring installed on the outer circle, and a bearing and an oil seal are installed in the center of the left side of the wheel hub 1 through a sleeve.

[0008] Furthermore, the groove 7 arranged on the right side of the hub 1 is in a circular shape with the recessed part facing inward, the outer diameter of the groove 7 is 0.5-6 cm larger than the outer diameter of the hub 1, the inner edge of the left side of the groove 7 and the edge of the right side of the hub 1 are integrated, the right side of the groove 7 is in the shape of a gear ring with internal teeth, the inwardly protruding buckle 2 is trapezoidal, all the buckles 2 are inclined 2-6° in the clockwise direction from front to left to rear to right, and the internal space between the buckle 2 and the groove 7 is conical.

[0009] Furthermore, the end cover 3 is disc-shaped, and the width of the support ring 11 arranged on the edge of the left side is greater than 0.3 cm. The bearing position 13 arranged in the center of the left side of the end cover 3 is annular, and an oil seal is arranged inside the right side of the bearing position 13. The brake drum 4 arranged in the center of the right side of the end cover 3 is annular.

[0010] Furthermore, the edge of the end cover 3 is gear-shaped, the outwardly protruding stop 10 is trapezoidal, the right side surfaces of all stoppers 10 are tilted 2-6° from the front to the right and rear to the left in the clockwise direction, and the left and right sides of the stoppers 10 are conical.

[0011] Furthermore, 3 to 12 stoppers 10 are evenly arranged on the outer circle of the right side of the hub 1 .

[0012] Furthermore, a groove 7 is arranged at the edge of the left side of the end cover 3 , and 3 to 12 buckles 2 are evenly arranged inside the left side of the groove 7 .

[0013] Furthermore, a disc-shaped disc brake support is provided at the center of the right side of the end cover 3 .

[0014] Beneficial effects: At present, the electric vehicle wheel hub made of aluminum alloy has two end covers, that is, one end cover is installed on each side of the wheel hub, which has poor sealing performance and is prone to oil leakage; while the electric vehicle wheel hub made of iron has only one end cover, that is, the wheel hub and the end cover on one side are integrated, and the end cover on the other side is connected to the wheel hub by bolts, which are easy to loosen and leak oil.

[0015] A double locking mechanism for an electric vehicle wheel hub and an end cover adopts a basin-shaped wheel hub, an annular groove is arranged on the edge of the right side of the wheel hub, a plurality of buckles are evenly arranged on the right side of the groove, the buckles and the stoppers on the edge of the disc-shaped end cover are locked with each other, and after the buckles and the stoppers are locked, secondary locking is performed through bolts and thread holes outside the buckles to prevent the stoppers from falling off, thereby achieving a double locking effect and solving the defects of easy loosening and oil leakage of the bolts of the wheel hub end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to further illustrate the technical solution of the present invention, the following briefly describes the drawings required for use. The drawings described below are merely some schematic diagrams of the present invention. For those skilled in the art, more drawings can be obtained by combining these drawings without creativity.

[0017] Figure 1 It is a front view of a double locking mechanism between a wheel hub and an end cover of an electric vehicle, tilted 45 degrees to the right;

[0018] Figure 2 It is a schematic diagram of the structure of the hub, buckle, groove and locking hole with the front direction tilted 45° to the right;

[0019] Figure 3 It is a schematic diagram of the structure of the end cover, brake drum, thread hole, stopper, support ring and rubber sealing ring, with the front direction tilted 45° to the right;

[0020] Figure 4 It is a structural diagram of the end cover, thread hole, stopper, support ring and bearing seat with the left side tilted at 45°;

[0021] In the figure, 1. wheel hub; 2. buckle; 3. end cover; 4. brake drum; 5. bolt; 6. center shaft; 7. groove; 8. locking hole; 9. thread hole; 10. stopper; 11. support ring; 12. rubber sealing ring; 13. bearing position. DETAILED DESCRIPTION

[0022] The shape and structure of the present invention are described in detail with reference to the accompanying drawings and the accompanying reference numerals: Example

[0023] See attached Figure 1-4A double locking mechanism for an electric vehicle wheel hub and an end cover comprises a wheel hub 1, the wheel hub 1 is used to support a steel rim, a groove 7 is arranged on the right side of the wheel hub 1, 3-12 buckles 2 are evenly arranged on the right side of the groove 7, a locking hole 8 is arranged in the center of the buckle 2, the groove 7 is used to position the end cover 3, the buckle 2 is used to clamp a stop 10, the locking hole 8 is used to position a bolt 5, the center of the left side of the wheel hub 1 is movably connected to a central axis 6 through a bearing, the central axis 6 is used to support the wheel hub 1 and the end cover 3, 3-12 stoppers 10 are evenly arranged on the edge of the end cover 3, a thread hole 9 is arranged in the center of the stopper 10, the end cover 3 is used to support the wheel hub 1, the stopper 10 is used to lock with the buckle 2, the thread hole 9 is used to install the bolt 5, the right side of the end cover 3 A brake drum 4 is arranged on the side, and the brake drum 4 is used for friction braking with the brake shoe. A support ring 11 and a bearing position 13 are arranged on the left side of the end cover 3, and the support ring 11 is used for positioning between the end cover 3 and the wheel hub 1, and the bearing position 13 is used for installing bearings and oil seals. A rubber sealing ring 12 is installed on the support ring 11, and the rubber sealing ring 12 is used for sealing between the wheel hub 1 and the end cover 3. The bearing position 13 is movably connected with the central axis 6 through a bearing, and the stopper 10 is installed inside the groove 7, and the stopper 10 and the buckle 2 are locked with each other. The bolt 5 passes through the locking hole 8 and the thread hole 9 to engage with each other for secondary locking between the stopper 10 and the buckle 2. The left side of the end cover 3 is sealed with the right side of the wheel hub 1 through the rubber sealing ring 12.

[0024] See attached Figure 1-2 The wheel hub 1 is in the shape of a basin, and an annular steel ring is installed on the outer circle. A bearing and an oil seal are installed in the center of the left side of the wheel hub 1 through a sleeve.

[0025] See attached Figure 1-2 The groove 7 arranged on the right side of the wheel hub 1 is in a circular shape with a recessed part facing inward. The outer diameter of the groove 7 is 0.5-6 cm larger than the outer diameter of the wheel hub 1. The inner edge of the left side of the groove 7 and the edge of the right side of the wheel hub 1 are integrated. The right side of the groove 7 is in the shape of a gear ring with internal teeth. The buckle 2 protruding inward is trapezoidal. All buckles 2 are inclined 2-6° in the clockwise direction from front to left and rear to right. The internal space between the buckle 2 and the groove 7 is conical.

[0026] See attached Figure 1 and 3 The end cover 3 is disc-shaped, and the width of the support ring 11 arranged on the edge of the left side is greater than 0.3 cm. The bearing position 13 arranged in the center of the left side of the end cover 3 is annular, and an oil seal is arranged inside the right side of the bearing position 13. The brake drum 4 arranged in the center of the right side of the end cover 3 is annular.

[0027] See attached Figure 3The edge of the end cover 3 is gear-shaped, the outwardly protruding stop 10 is trapezoidal, the right side of all the stops 10 is tilted 2-6° in the clockwise direction from front to right and rear to left, and the left and right sides of the stop 10 are conical. Example

[0028] A double locking mechanism for an electric vehicle wheel hub and an end cover, wherein 3-12 stoppers 10 are evenly arranged on the outer circle of the right side of the wheel hub 1; a groove 7 is arranged on the edge of the left side of the end cover 3, and 3-12 buckles 2 are evenly arranged inside the left side of the groove 7; and a disc-shaped disc brake support is arranged in the center of the right side of the end cover 3.

[0029] Combined with the above, a simple description of the assembly process of a double locking mechanism for an electric vehicle wheel hub and an end cover is given. The worker first assembles the rotor and the stator in the center of the middle shaft 6, and then installs bearings on both ends of the middle shaft 6 respectively. The worker places the wheel hub 1 horizontally on the bracket with the side with the groove 7 facing up. The worker stands up the middle shaft 6 with the left side facing down, inserts the bottom of the middle shaft 6 into the shaft sleeve in the center of the wheel hub 1, and presses it tightly. The worker turns the wheel hub 1 180° and places it on the bracket. Use a special oil seal installation pliers to insert the oil seal onto the middle shaft 6, and then slowly presses it down into the shaft sleeve of the wheel hub 1. The worker turns the wheel hub 1 180° again and places it on the bracket, and then injects 200-500ml of lubricating oil into the wheel hub 1. The worker inserts the rubber sealing ring 12 onto the support ring 11 of the end cover 3, and then installs the end cover 3 on the right side of the wheel hub 1, with the support ring 11 facing down and embedded in the right side of the wheel hub 1. The worker uses Use special long-handled pliers to clamp the brake drum 4 and slowly rotate it to make the stop 10 on the edge of the end cover 3 rotate into the gap between the two buckles 2, and then press the end cover 3 hard to make the stop 10 fall completely into the groove 7. The worker rotates the special long-handled pliers counterclockwise to force the end cover 3 to drive the stop 10 to rotate counterclockwise to embed the stop 10 into the buckle 2. Since the internal space between the buckle 2 and the groove 7 is conical, and the left and right sides of the stop 10 are also conical, the more the stop 10 and the buckle 2 are rotated, the tighter they will become until the locking hole 8 and the thread hole 9 overlap and stop rotating, and then screw the bolt 5 into the thread hole 9. The worker uses a special oil seal installation pliers to insert the oil seal onto the central shaft 6, and then slowly presses it down to the inside of the bearing position 13. At this point, the assembly is completed, and after the buckle and the stop are locked, the bolts and threads on the outside of the buckle are used to perform secondary locking to prevent the mouth from falling off, thereby achieving a double locking effect.

[0030] The parts not described in detail above are prior art.

[0031] The above is only a general disclosure of the utility model and does not limit the utility model in any form; any adjustment, modification and evolution of any equivalent changes made by technical personnel familiar with the industry without departing from the technical solution of the utility model and implementing the above-mentioned technology shall fall within the protection scope of the technical solution of the utility model.

Claims

1. A double locking mechanism for an electric vehicle wheel hub and an end cover, comprising a wheel hub, characterized in that A groove is arranged on the right side of the wheel hub, 3-12 buckles are evenly arranged on the right side of the groove, a locking hole is arranged in the center of the buckle, the center of the left side of the wheel hub is movably connected with the central axis through a bearing, 3-12 stoppers are evenly arranged on the edge of the end cover, a thread hole is arranged in the center of the stopper, a brake drum is arranged on the right side of the end cover, a support ring and a bearing position are arranged on the left side of the end cover, a rubber sealing ring is installed on the support ring, the bearing position is movably connected with the central axis through a bearing, the stopper is installed inside the groove, the stopper and the buckle are locked with each other, the bolt passes through the locking hole and engages with the thread hole to perform secondary locking between the stopper and the buckle, and the left side of the end cover is sealed with the right side of the wheel hub through a rubber sealing ring.

2. According to claim 1, a double locking mechanism for an electric vehicle wheel hub and an end cover, characterized in that The wheel hub is basin-shaped, with an annular steel ring installed on the outer circle, and a bearing and an oil seal are installed in the center of the left side of the wheel hub through a sleeve.

3. According to claim 1 or 2, a double locking mechanism for an electric vehicle wheel hub and an end cover, characterized in that The groove set on the right side of the hub is circular in shape, with the recessed part facing inward. The outer diameter of the groove is 0.5-6 cm larger than the outer diameter of the hub. The inner edge of the left side of the groove and the edge of the right side of the hub are integrated. The right side of the groove is in the shape of a gear ring with internal teeth, and the inwardly protruding buckle is trapezoidal. All buckles are set to be inclined 2-6° in the clockwise direction, front to left, rear to right, and the internal space between the buckle and the groove is conical.

4. According to claim 1, the double locking mechanism of the electric vehicle wheel hub and the end cover is characterized in that The end cover is disc-shaped, and the width of the support ring set on the edge of the left side is greater than 0.3 cm. The bearing seat set in the center of the left side of the end cover is annular, and an oil seal is set inside the right side of the bearing seat. The brake drum set in the center of the right side of the end cover is annular.

5. The double locking mechanism for the wheel hub and the end cover of an electric vehicle according to claim 1 or 4, characterized in that The edge of the end cover is gear-shaped, the outwardly protruding stop is trapezoidal, the right sides of all the stops are inclined 2-6 degrees from the front to the right to the rear to the left in the clockwise direction, and the left and right sides of the stop are tapered.

6. According to claim 1, the double locking mechanism of the electric vehicle wheel hub and the end cover is characterized in that There are 3 to 12 stoppers evenly arranged on the outer circle of the right side of the hub.

7. According to claim 1, the double locking mechanism of the electric vehicle wheel hub and the end cover is characterized in that A groove is arranged on the edge of the left side of the end cover, and 3 to 12 buckles are evenly arranged inside the left side of the groove.

8. According to claim 1, the double locking mechanism of the electric vehicle wheel hub and the end cover is characterized in that A disc-shaped disc brake support is provided in the center of the right side of the end cover.

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