Powder metallurgy gear for new energy vehicle

Abstract

The utility model discloses a powder metallurgy gear for new energy vehicle relates to gear technical field. This powder metallurgy gear for new energy vehicle, including wheel hub subassembly and axle sleeve subassembly, axle sleeve subassembly installs at the center place inside wheel hub subassembly, wheel hub subassembly includes wheel body, and the center place of wheel body is provided with the stepped inner hole, and the outer circular surface fixed mounting of wheel body has the gear tooth, and the position of the inner side surface position of the stepped inner hole of wheel body center place is provided with first semicircle thread hole, and the position of the inner side surface of the stepped inner hole of wheel body center place and close to first semicircle thread hole is provided with sector limiting recess, and axle sleeve subassembly includes sleeve, and the outer circular surface of sleeve is provided with second semicircle thread hole, and the position of the outer circular surface of sleeve and close to second semicircle thread hole is fixedly connected with sector convex block, and the inner side surface of sleeve center hole is provided with the key groove, reaches the purpose of can assemble, can assemble, and the convenient installation and removal is not easy to cause damage, convenient to use, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of gear technology, specifically a powder metallurgy gear for new energy vehicles. Background Technology

[0002] Powder metallurgy gears are manufactured by mixing metal powder with a specific binder, pressing the mixture under high temperature and pressure, and then sintering it. This method can produce high-precision, high-strength gears suitable for various industrial applications requiring wear resistance, corrosion resistance, and high-temperature resistance. The manufacturing process of powder metallurgy gears typically includes raw material mixing, pressing, sintering, and subsequent processing. Before sintering, the pressed gears are preheated to remove volatile organic compounds from the powder. The preheated gears are then placed in a sintering furnace for high-temperature sintering, which facilitates diffusion, grain growth, and interparticle bonding among the metal powder particles, gradually forming a dense metal structure. The core advantages of powder metallurgy gears are near-net-shape forming, low cost, and controllable precision, making them widely used in the automotive, home appliance, and construction machinery industries. With the increasing manufacturing of new energy vehicles, the application of powder metallurgy gears is also growing.

[0003] Currently, traditional powder metallurgy gears are one-piece designs, which makes installation and disassembly inconvenient. In particular, disassembly requires force and can easily damage the powder metallurgy gears. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a powder metallurgy gear for new energy vehicles, which solves the problem that powder metallurgy gears are integral pieces, making installation and disassembly inconvenient, especially since disassembly requires force and can easily damage the powder metallurgy gear.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A powder metallurgy gear for new energy vehicles, comprising:

[0007] A hub assembly and a bushing assembly, wherein the bushing assembly is installed at the center inside the hub assembly, and a connecting bolt is installed between the hub assembly and the bushing assembly;

[0008] The hub assembly includes a wheel body, a stepped inner hole at the center of the wheel body, wheel teeth fixedly installed on the outer circular surface of the wheel body, a circular hole at the side of the surface of the wheel body, a first semi-circular threaded hole at the inner side of the stepped inner hole at the center of the wheel body, and a fan-shaped limiting groove at the inner side of the stepped inner hole at the center of the wheel body and near the first semi-circular threaded hole.

[0009] The bushing assembly includes a sleeve that is embedded in the interior of a stepped inner hole. The outer surface of the sleeve has a second semi-circular threaded hole. A fan-shaped protrusion is fixedly connected to the outer surface of the sleeve near the second semi-circular threaded hole. A keyway is provided on the inner side of the central hole of the sleeve. The sleeve is mounted on the shaft through the keyway, and the wheel is fitted onto the surface of the sleeve. The fan-shaped protrusion matches the fan-shaped limiting groove, which guides the wheel and facilitates the assembly of the wheel and the sleeve. The connecting bolts are threaded into the first and second semi-circular threaded holes to lock and fix the wheel and the sleeve, thus completing the assembly.

[0010] Preferably, the stepped inner hole and the wheel body are concentric circles, the wheel teeth are evenly distributed on the outer circular surface of the wheel body, the circular hole penetrates the wheel body, and the circular hole is evenly distributed on the side of the wheel body surface. The evenly distributed circular hole can reduce the overall weight of the wheel body.

[0011] Preferably, there are three fan-shaped limiting grooves, and the three fan-shaped limiting grooves are evenly distributed along the circumferential direction of the central axis of the stepped inner hole, and the fan-shaped limiting grooves are staggered with the first semi-circular threaded hole.

[0012] Preferably, there are three connecting bolts, and the three connecting bolts are evenly distributed along the circumferential direction of the central axis of the sleeve. The connecting bolts are threaded into the first semi-circular threaded hole and the second semi-circular threaded hole. As the wheel body and the sleeve are assembled, the sleeve is driven by the circumferential rotational force of the drive shaft, which causes the sleeve to drive the wheel body to rotate, thereby causing the gear teeth to rotate in a circle. This allows the gear meshing driving force to be applied. Furthermore, the cooperation between the fan-shaped protrusion and the fan-shaped limiting groove can increase the contact area, thereby enhancing the overall torque force of the gear.

[0013] Preferably, the central axis of the sleeve coincides with the central axis of the wheel body, and the outer circular surface of the sleeve is in contact with the inner surface of the stepped inner hole at the center of the wheel body.

[0014] Preferably, there are three fan-shaped protrusions, and the three fan-shaped protrusions are evenly distributed along the circumferential direction of the central axis of the sleeve, and the fan-shaped curved surface on the outer side of the fan-shaped protrusions fits against the inner side of the fan-shaped limiting groove.

[0015] By unscrewing the connecting bolts, so that there is no connection between the connecting bolts and the first semicircular threaded holes and the second semicircular threaded holes, the wheel body can be moved axially as a whole, which facilitates disassembly without the need for forceful hammering, is less likely to damage the gears, and is safe and reliable.

[0016] Preferably, there are three second semicircular threaded holes, and the three second semicircular threaded holes are evenly distributed along the circumferential direction of the central axis of the sleeve, and the second semicircular threaded holes and the fan-shaped protrusions are staggered along the circumferential direction of the central axis of the sleeve.

[0017] Beneficial effects

[0018] This utility model provides a powder metallurgy gear for new energy vehicles. It has the following beneficial effects:

[0019] 1. The powder metallurgy gear for new energy vehicles uses a fan-shaped protrusion that matches a fan-shaped limiting groove to guide the wheel body, facilitating the assembly of the wheel body and the sleeve. The connecting bolts are threaded into the first semi-circular threaded hole and the second semi-circular threaded hole to lock and fix the wheel body and the sleeve, thus enabling assembly.

[0020] Second, the powder metallurgy gear for new energy vehicles utilizes the circumferential rotational force of the drive shaft on the sleeve, causing the sleeve to drive the gear body to rotate, thereby causing the gear teeth to rotate in a circular motion, thus applying the driving force for gear meshing. Furthermore, the cooperation between the fan-shaped protrusion and the fan-shaped limiting groove can increase the contact area, thereby enhancing the overall torque force of the gear.

[0021] Third, the powder metallurgy gear used in this new energy vehicle can be axially moved out by unscrewing the connecting bolts, so that there is no connection between the connecting bolts and the first semicircular threaded hole and the second semicircular threaded hole. This makes disassembly easy, without the need for forceful hammering, and less likely to damage the gear, making it safe and reliable. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the powder metallurgy gear for new energy vehicles according to this utility model;

[0023] Figure 2 This is a schematic diagram showing the disassembled structure of the powder metallurgy gear for new energy vehicles according to this utility model;

[0024] Figure 3 This is a schematic diagram of the overall structure of the wheel hub assembly of this utility model;

[0025] Figure 4 This is a schematic diagram of the disassembled structure between the bushing assembly and the wheel body of this utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of the bushing assembly of this utility model.

[0027] In the diagram: 1. Hub assembly; 2. Bushing assembly; 3. Connecting bolt; 101. Wheel body; 102. Stepped inner hole; 103. Gear tooth; 104. Circular hole; 105. First semi-circular threaded hole; 106. Sector-shaped limiting groove; 201. Sleeve; 202. Second semi-circular threaded hole; 203. Sector-shaped protrusion; 204. Keyway. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 This utility model provides a technical solution: a powder metallurgy gear for new energy vehicles, comprising:

[0030] A hub assembly 1 and a bushing assembly 2 are provided. The bushing assembly 2 is installed at the center inside the hub assembly 1. A connecting bolt 3 is detachably installed between the hub assembly 1 and the bushing assembly 2.

[0031] The hub assembly 1 includes a wheel body 101, a stepped inner hole 102 is provided at the center of the wheel body 101, a wheel tooth 103 is fixedly installed on the outer circular surface of the wheel body 101, a circular hole 104 is provided on the side of the surface of the wheel body 101, a first semi-circular threaded hole 105 is provided on the inner side of the stepped inner hole 102 at the center of the wheel body 101, and a fan-shaped limiting groove 106 is provided on the inner side of the stepped inner hole 102 at the center of the wheel body 101 and near the first semi-circular threaded hole 105.

[0032] The bushing assembly 2 includes a sleeve 201, which is embedded in the interior of the stepped inner hole 102. A second semi-circular threaded hole 202 is provided on the outer circular surface of the sleeve 201. A fan-shaped protrusion 203 is fixedly connected to the outer circular surface of the sleeve 201 and near the second semi-circular threaded hole 202. A keyway 204 is provided on the inner side of the central hole of the sleeve 201.

[0033] The stepped inner hole 102 and the wheel body 101 are concentric circles. The gear teeth 103 are evenly distributed on the outer circular surface of the wheel body 101. The circular hole 104 penetrates the wheel body 101 and is evenly distributed on the side of the surface of the wheel body 101. The sleeve 201 is installed on the shaft through the keyway 204, and the wheel body 101 is fitted onto the surface of the sleeve 201. The fan-shaped protrusion 203 matches the fan-shaped limiting groove 106 to guide the wheel body 101, which facilitates the assembly of the wheel body 101 and the sleeve 201. The connecting bolt 3 is threaded into the first semi-circular threaded hole 105 and the second semi-circular threaded hole 202 to lock and fix the wheel body 101 and the sleeve 201 for assembly.

[0034] There are three sector-shaped limiting grooves 106, and the three sector-shaped limiting grooves 106 are evenly distributed along the circumferential direction of the central axis of the stepped inner hole 102. The sector-shaped limiting grooves 106 and the first semi-circular threaded hole 105 are arranged alternately. After the wheel body 101 and the sleeve 201 are assembled, the sleeve 201 is driven by the circumferential rotational force of the drive shaft, so that the sleeve 201 drives the wheel body 101 to rotate, thereby causing the gear teeth 103 to be driven to rotate in a circle, so that the driving force of gear meshing can be applied. In addition, the cooperation between the sector-shaped protrusion 203 and the sector-shaped limiting groove 106 can increase the contact area and enhance the overall torque of the gear.

[0035] There are three connecting bolts 3, and the three connecting bolts 3 are evenly distributed along the circumference of the central axis of the sleeve 201. The connecting bolts 3 are threadedly installed between the first semicircular threaded hole 105 and the second semicircular threaded hole 202.

[0036] The central axis of the sleeve 201 coincides with the central axis of the wheel body 101, and the outer circular surface of the sleeve 201 fits against the inner surface of the stepped inner hole 102 at the center of the wheel body 101.

[0037] There are three fan-shaped protrusions 203, and the three fan-shaped protrusions 203 are evenly distributed along the circumferential direction of the central axis of the sleeve 201. The fan-shaped curved surface on the outer side of the fan-shaped protrusion 203 fits against the inner side of the fan-shaped limiting groove 106. When the gear needs to be disassembled and repaired, the connecting bolt 3 can be unscrewed, so that there is no connection between the connecting bolt 3 and the first semi-circular threaded hole 105 and the second semi-circular threaded hole 202. The wheel body 101 can then be moved out axially as a whole, which facilitates disassembly without the need for forceful knocking and is less likely to damage the gear.

[0038] There are three second semicircular threaded holes 202, and the three second semicircular threaded holes 202 are evenly distributed along the circumferential direction of the central axis of the sleeve 201. The second semicircular threaded holes 202 and the fan-shaped protrusions 203 are arranged alternately along the circumferential direction of the central axis of the sleeve 201.

[0039] In use, firstly, the sleeve 201 is installed on the shaft through the keyway 204, and the wheel body 101 is fitted onto the surface of the sleeve 201. By using the fan-shaped protrusion 203 to match the fan-shaped limiting groove 106, the wheel body 101 can be guided, which facilitates the assembly of the wheel body 101 and the sleeve 201. Then, the connecting bolt 3 is threaded into the first semi-circular threaded hole 105 and the second semi-circular threaded hole 202 to lock and fix the wheel body 101 and the sleeve 201 for assembly.

[0040] Furthermore, as the wheel body 101 and the sleeve 201 are assembled, the sleeve 201 is subjected to the circumferential rotational force of the drive shaft, causing the sleeve 201 to drive the wheel body 101 to rotate, thereby causing the gear teeth 103 to rotate in a circle, thus applying the driving force of gear meshing. Moreover, the cooperation between the fan-shaped protrusion 203 and the fan-shaped limiting groove 106 can increase the contact area and enhance the overall torque force of the gear.

[0041] When the gear needs to be disassembled and repaired, the connecting bolt 3 can be unscrewed, so that there is no connection between the connecting bolt 3 and the first semicircular threaded hole 105 and the second semicircular threaded hole 202. The wheel body 101 can then be moved out axially as a whole, which facilitates disassembly without the need for forceful hammering and is less likely to damage the gear.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder metallurgy gear for new energy vehicles, characterized in that, include: A hub assembly (1) and a bushing assembly (2) are provided. The bushing assembly (2) is installed at the center inside the hub assembly (1). A connecting bolt (3) is detachably installed between the hub assembly (1) and the bushing assembly (2). The hub assembly (1) includes a wheel body (101). A stepped inner hole (102) is provided at the center of the wheel body (101). Gear teeth (103) are fixedly installed on the outer circular surface of the wheel body (101). A circular hole (104) is provided on the side of the surface of the wheel body (101). A first semi-circular thread is provided on the inner side of the stepped inner hole (102) at the center of the wheel body (101). Hole (105), a fan-shaped limiting groove (106) is provided on the inner side of the stepped inner hole (102) at the center of the wheel body (101) and near the first semi-circular threaded hole (105); the bushing assembly (2) includes a sleeve (201), the sleeve (201) is embedded in the interior of the stepped inner hole (102), the outer circular surface of the sleeve (201) is provided with a second semi-circular threaded hole (202), the outer circular surface of the sleeve (201) and near the second semi-circular threaded hole (202) is fixedly connected with a fan-shaped protrusion (203), and the inner side of the center hole of the sleeve (201) is provided with a keyway (204).

2. The powder metallurgy gear for new energy vehicles according to claim 1, characterized in that: The stepped inner hole (102) and the wheel body (101) are concentric circles. The wheel teeth (103) are evenly distributed on the outer circular surface of the wheel body (101). The circular hole (104) penetrates the wheel body (101) and is evenly distributed on the side of the surface of the wheel body (101).

3. The powder metallurgy gear for new energy vehicles according to claim 1, characterized in that: There are three fan-shaped limiting grooves (106), and the three fan-shaped limiting grooves (106) are evenly distributed along the circumferential direction of the central axis of the stepped inner hole (102). The fan-shaped limiting grooves (106) and the first semi-circular threaded hole (105) are arranged alternately.

4. The powder metallurgy gear for new energy vehicles according to claim 1, characterized in that: There are three connecting bolts (3), and the three connecting bolts (3) are evenly distributed along the circumferential direction of the central axis of the sleeve (201). The connecting bolts (3) are threadedly installed with the first semicircular threaded hole (105) and the second semicircular threaded hole (202).

5. A powder metallurgy gear for new energy vehicles according to claim 1, characterized in that: The central axis of the sleeve (201) coincides with the central axis of the wheel body (101), and the outer circular surface of the sleeve (201) is in contact with the inner surface of the stepped inner hole (102) at the center of the wheel body (101).

6. The powder metallurgy gear for new energy vehicles according to claim 1, characterized in that: There are three fan-shaped protrusions (203), and the three fan-shaped protrusions (203) are evenly distributed along the circumferential direction of the central axis of the sleeve (201). The fan-shaped curved surface on the outer side of the fan-shaped protrusion (203) fits against the inner side of the fan-shaped limiting groove (106).

7. The powder metallurgy gear for new energy vehicles according to claim 1, characterized in that: There are three second semicircular threaded holes (202), and the three second semicircular threaded holes (202) are evenly distributed along the circumferential direction of the central axis of the sleeve (201). The second semicircular threaded holes (202) and the fan-shaped protrusions (203) are arranged alternately along the circumferential direction of the central axis of the sleeve (201).

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