A redundant electric power steering gear housing

Abstract

The utility model relates to the technical field of steering gear housing and discloses a redundant electric power steering gear housing, which comprises a steering gear first housing, and a first connecting plate is fixedly installed on the outer surface of the steering gear first housing, wherein a dismounting mechanism is arranged on the steering gear first housing, the redundant electric power steering gear housing is composed of a hollow column, a spring, a fixed roller, a ball and other structures, efficient dismounting and mounting are realized, when mounting, the hollow column is inserted into the jack of the first connecting plate, the spring pushes the annular ring and the fixed roller, the ball is ejected from the round hole and clamped into the clamping hole of the jack, two housings are quickly locked, when dismounting, only the pull ring needs to be pulled to drive the fixed roller to compress the spring, the ball is retracted into the round hole, the hollow column can be pulled out, no additional tool is needed, the operation process is simplified, the housing is especially suitable for disassembly during the later maintenance of the steering gear, manpower and time cost are saved, and the maintenance efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of steering gear housing technology, specifically a redundant electric steering gear housing. Background Technology

[0002] In the field of electric power steering technology, the steering gear housing, as the protective and load-bearing structure of the internal core component, directly affects the safety and maintenance efficiency of the steering gear in terms of connection stability, ease of disassembly and assembly, and sealing performance. Currently, most electric power steering housings on the market adopt an integrated structure or a single bolt-fastened splicing structure, which has obvious shortcomings.

[0003] While unibody housings offer structural stability, they require complete disassembly for maintenance, which is cumbersome and can easily damage internal components, resulting in low maintenance efficiency and high labor and time costs. Bolted housings, although detachable, require additional tools such as wrenches for disassembly and assembly, making the process cumbersome, especially in confined spaces like vehicle chassis where tool operation is limited, further extending maintenance cycles. In addition, bolts are prone to rust and stripping over time, increasing the difficulty of disassembly. Therefore, a redundant electric steering housing is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a redundant electric steering gear housing, which solves the problem of inconvenient disassembly and assembly of the electric steering gear housing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a redundant electric steering gear housing, comprising a steering gear first housing, wherein a first connecting plate is fixedly installed on the outer surface of the steering gear first housing; The first housing of the steering gear is provided with a disassembly and assembly mechanism, which includes a second housing of the steering gear, a second connecting plate, a hollow column, a socket, a locking hole, a spring, a ring, a fixing roller, a pull ring, a round hole, and a ball. Multiple sockets are located on the left surface of the first connecting plate, and multiple locking holes are located on the inner surface of the sockets.

[0006] Preferably, the second housing of the steering gear is disposed on the left surface of the first housing of the steering gear, and the second connecting plate is fixedly installed on the outer surface of the second housing of the steering gear.

[0007] Preferably, the plurality of hollow columns are inserted into the inner surface of the second connecting plate, the plurality of round holes are respectively opened on the outer surface of the plurality of hollow columns, and the plurality of round beads are respectively disposed in the plurality of round holes.

[0008] Preferably, the plurality of springs are respectively fixedly installed on the inner surface of the plurality of hollow columns, and the plurality of rings are respectively fixedly installed on the right end of the plurality of springs; Among them, multiple fixed rollers are fixedly sleeved on the inner surface of multiple rings, and multiple fixed rollers are slidably sleeved on the inner surface of multiple hollow columns.

[0009] Preferably, the disassembly and assembly mechanism further includes a rubber sealing ring, anti-slip texture, and an outward expansion spring. The rubber sealing ring is fixedly installed on the inner surface of the first connecting plate, and the outward expansion spring is fixedly installed on the inner surface of the rubber sealing ring. The anti-slip texture is formed on the outer surface of the rubber sealing ring, and the anti-slip texture is set in a stripe pattern.

[0010] Preferably, the anti-slip texture is replaced with a diamond-shaped grid pattern, which specifically serves to prevent slippage, and the anti-slip texture is still formed on the outer surface of the rubber sealing ring.

[0011] Compared with the prior art, the present invention provides a redundant electric steering gear housing, which has the following advantages: 1. This redundant electric steering gear housing utilizes a disassembly and assembly mechanism composed of a hollow column, spring, fixed roller, and ball bearing to achieve efficient disassembly and assembly. During installation, the hollow column is inserted into the insertion hole of the first connecting plate. The spring pushes the ring and fixed roller, causing the ball bearing to pop out of the circular hole and engage with the locking hole of the insertion hole, quickly locking the two housings. During disassembly, simply pull the pull ring to compress the spring, causing the ball bearing to retract into the circular hole, allowing the hollow column to be pulled out. No additional tools are required, simplifying the operation process. This design is particularly suitable for disassembling the housing during later maintenance of the steering gear, saving manpower and time costs and effectively improving maintenance efficiency.

[0012] 2. This redundant electric steering gear housing, through the redundant design of the first and second housings, forms double protection, enhancing the overall resistance to external forces and reducing the impact of damage to a single housing on internal components. At the same time, the rubber sealing ring of the first connecting plate, in conjunction with the outward expansion spring, can tightly fit the connecting surface to prevent impurities and liquids from entering. In addition, the anti-slip texture of the rubber sealing ring can increase friction and prevent the sealing ring from shifting. In particular, the diamond-shaped texture is suitable for low-temperature and humid environments and can compensate for rubber shrinkage through micro-air pressure support. Combined with the locking of the locking holes and balls, it not only ensures the reliability of the seal but also improves the stability of the structural connection, protecting the long-term stable operation of the internal components of the steering gear. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a redundant electric steering gear housing structure according to the present invention; Figure 2 This is a schematic diagram of the second housing structure of the steering gear of this utility model; Figure 3 This is a schematic diagram of the hollow column structure of this utility model; Figure 4 This is a schematic diagram of the first housing structure of the steering gear of this utility model; Figure 5This utility model Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the rubber sealing ring structure of this utility model.

[0014] In the diagram: 1. First housing of the steering gear; 2. First connecting plate; 3. Second housing of the steering gear; 4. Second connecting plate; 5. Hollow column; 6. Insertion hole; 7. Clip hole; 8. Spring; 9. Ring; 10. Fixed roller; 11. Pull ring; 12. Round hole; 13. Round ball; 14. Rubber sealing ring; 15. Anti-slip texture; 16. Outward expansion spring. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-6 This utility model provides a new technical solution: a redundant electric steering gear housing, including a steering gear first housing 1, and a first connecting plate 2 fixedly installed on the outer surface of the steering gear first housing 1; The steering gear first housing 1 is provided with a disassembly and assembly mechanism, which includes a steering gear second housing 3, a second connecting plate 4, a hollow column 5, an insertion hole 6, a locking hole 7, a spring 8, a ring 9, a fixed roller 10, a pull ring 11, a round hole 12, and a ball 13. Multiple sockets 6 are formed on the left surface of the first connecting plate 2, and multiple locking holes 7 are formed on the inner surface of the sockets 6.

[0017] Furthermore, the second housing 3 of the steering gear is disposed on the left surface of the first housing 1 of the steering gear, and the second connecting plate 4 is fixedly installed on the outer surface of the second housing 3 of the steering gear.

[0018] Furthermore, multiple hollow pillars 5 are inserted into the inner surface of the second connecting plate 4, multiple round holes 12 are respectively opened on the outer surface of the multiple hollow pillars 5, and multiple round beads 13 are respectively disposed in the multiple round holes 12.

[0019] Furthermore, multiple springs 8 are respectively fixedly installed on the inner surface of multiple hollow columns 5, and multiple rings 9 are respectively fixedly installed on the right end of multiple springs 8; Among them, multiple fixed rollers 10 are respectively fixedly sleeved on the inner surface of multiple rings 9, and multiple fixed rollers 10 are respectively slidably sleeved on the inner surface of multiple hollow columns 5.

[0020] Furthermore, the disassembly and assembly mechanism also includes a rubber sealing ring 14, anti-slip texture 15, and an outward expansion spring 16. The rubber sealing ring 14 is fixedly installed on the inner surface of the first connecting plate 2, and the outward expansion spring 16 is fixedly installed on the inner surface of the rubber sealing ring 14. Among them, the anti-slip texture 15 is formed on the outer surface of the rubber sealing ring 14, and the anti-slip texture 15 is arranged in a stripe pattern.

[0021] Furthermore, the anti-slip texture 15 is replaced with a diamond-shaped grid pattern, which specifically serves to prevent slipping. The anti-slip texture 15 is still formed on the outer surface of the rubber sealing ring 14.

[0022] Structural Explanation: Steering Gear First Housing 1: This is the core basic component, bearing the key internal components of the steering gear and providing an assembly reference. Together with the Second Housing 3, it forms an outer layer of protection, ensuring that the internal components are not disturbed. Its strength affects the overall stability of the steering gear.

[0023] First connecting plate 2: Fixed to the outer surface of the first housing 1, it is a transition piece connecting the two housings. It has a socket 6 for the hollow column 5 to be inserted, and works with the second connecting plate 4 and the disassembly and assembly mechanism to stably connect the housings. It also provides an installation position for the rubber sealing ring 14.

[0024] Steering gear second housing 3: Located on the left surface of the first housing 1, it forms redundant protection with the first housing 1, enhances the housing strength, shares external forces, reduces the impact of damage to a single housing, and is connected to the first housing 1 through the second connecting plate 4 to ensure stable operating conditions.

[0025] The second connecting plate 4 is fixed to the outer surface of the second housing 3, supports the hollow column 5, and indirectly connects the two housings by means of the hollow column 5 and the insertion hole 6 of the first connecting plate 2, so as to transfer the force and ensure the overall structure bears the load evenly.

[0026] Hollow column 5: Inserted into the second connecting plate 4, it is the core of the disassembly and assembly mechanism. It contains spring 8, ring 9, etc., and the outer surface round hole 12 accommodates ball 13. The internal components control the extension and retraction of ball 13 to realize the disassembly and assembly of the shell.

[0027] Insertion hole 6: Located on the left surface of the first connecting plate 2, it provides an insertion channel for the hollow column 5. The hole diameter is adapted to the hollow column 5 to ensure coaxiality. The inner surface locking hole 7 cooperates with the ball 13 to fix the hollow column 5 and ensure the connection of the connecting plate is stable.

[0028] Locking hole 7: Located on the inner surface of the insertion hole 6, it forms a locking structure with the ball 13. When the hollow column 5 is inserted, the ball 13 is locked into the locking hole 7 to prevent it from falling out; when disassembling, the ball 13 is disengaged, making it easy to pull out the hollow column 5.

[0029] Spring 8: Installed inside hollow column 5, it pushes ring 9 and fixed roller 10 in its natural state, causing ball 13 to pop out and be inserted into the locking hole 7; during disassembly, it is compressed by fixed roller 10, releasing the pressure on ball 13 and assisting in disassembly and assembly.

[0030] Ring 9: Installed on the right end of spring 8, sleeved on the outside of fixed roller 10, connecting spring 8 and fixed roller 10, transmitting elastic force, ensuring stable sliding of fixed roller 10, and limiting its sliding range to prevent it from coming off.

[0031] Fixed roller 10: It is slidable inside the hollow column 5 and sleeved inside the ring 9. When pushed by the spring, it squeezes the ball 13 to make it pop out; when disassembled, it is pulled to the left by the pull ring 11 to release the compression and allow the ball 13 to retract.

[0032] Pull ring 11: Attached to the left end of the fixed roller 10, it is the point of application of external force for disassembly. Pulling the pull ring 11 can drive the fixed roller 10 to slide and compress the spring 8, so that the ball 13 can be disengaged from the locking hole 7, simplifying disassembly and assembly.

[0033] Hole 12: It is opened on the outer surface of the hollow column 5 and is sized to fit the ball 13. It allows the ball 13 to extend and retract. When the ball 13 pops out, it extends out partially and retracts when unlocking, ensuring that the hollow column 5 can be inserted and removed normally.

[0034] Round bead 13: Installed in round hole 12, it pops out and snaps into the locking hole 7 when the hollow column 5 is inserted; it retracts into round hole 12 when disassembled, and is the key component for locking and unlocking the housing.

[0035] Rubber sealing ring 14: Fixed to the inner surface of the first connecting plate 2, it enhances the sealing of the connection between the two housings, prevents external impurities and liquids from entering the housing, and protects the internal components.

[0036] Anti-slip texture 15: It is formed on the outer surface of the rubber sealing ring 14. There are two types: striped and diamond grid. It can increase the contact friction, play an anti-slip role, and improve the stability of the sealing ring during installation and use.

[0037] Outward expansion spring 16: Fixed to the inner surface of the rubber sealing ring 14, it provides outward support for the sealing ring, ensuring that the sealing ring fits tightly with the connecting plate and improving the sealing effect.

[0038] Example 2: Diamond-patterned anti-slip texture 15 is suitable for passenger vehicles in low-temperature and humid environments and short-distance, high-frequency start-stop scenarios. A new energy vehicle manufacturer is using this housing for the electric steering system of its passenger cars. The vehicles are mainly used in rainy cities in the south, and the users are mostly commuters. The steering housing experiences slight axial movement due to frequent starts and stops, and the rubber sealing ring is prone to hardening and reduced fit in humid environments due to low temperatures. Therefore, a diamond-shaped anti-slip texture 15 is selected. When passenger vehicles frequently start and stop, the steering gear housing is affected by inertial forces, resulting in slight axial movement. If the anti-slip texture is only distributed in one direction, it is difficult to resist the axial force. However, the diamond-shaped texture has a cross-grid pattern, and the contact points with the inner wall of the connecting plate are distributed in multiple omnidirectional points, which can prevent the sealing ring from shifting in four directions: up, down, left, and right. Actual tests show that the axial movement amplitude is reduced from 0.8mm to 0.1mm, avoiding misalignment of the sealing surface and rainwater infiltration caused by the movement of the sealing ring. The elastic compensation is suitable for low temperature and humid environments: In the low temperature of winter in the south, the rubber sealing ring 14 will shrink and harden slightly. If the texture is a planar structure, the fit between the sealing ring and the connecting plate will decrease. However, the concave structure of the diamond-shaped texture can store a small amount of air. When the sealing ring shrinks due to low temperature, the air in the texture will form a micro-pressure support. With the thrust of the outward expansion spring 16, it is ensured that the sealing ring is still tightly attached to the connecting plate. Compared with the striped texture, the probability of seal failure in low temperature environment is reduced from 8% to 0.5%, ensuring that the steering system circuit is not short-circuited by moisture.

[0039] 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 redundant electric steering gear housing, comprising a steering gear first housing (1), characterized in that: A first connecting plate (2) is fixedly installed on the outer surface of the first housing (1) of the steering gear; The first housing (1) of the steering gear is provided with a disassembly and assembly mechanism, which includes the second housing (3) of the steering gear, the second connecting plate (4), the hollow column (5), the insertion hole (6), the locking hole (7), the spring (8), the ring (9), the fixing roller (10), the pull ring (11), the round hole (12) and the ball (13). Among them, multiple sockets (6) are opened on the left surface of the first connecting plate (2), and multiple locking holes (7) are opened on the inner surface of the sockets (6).

2. The redundant electric steering gear housing according to claim 1, characterized in that: The second housing (3) of the steering gear is disposed on the left surface of the first housing (1) of the steering gear, and the second connecting plate (4) is fixedly installed on the outer surface of the second housing (3) of the steering gear.

3. A redundant electric steering gear housing according to claim 1, characterized in that: Multiple hollow columns (5) are inserted into the inner surface of the second connecting plate (4), multiple round holes (12) are respectively opened on the outer surface of the multiple hollow columns (5), and multiple round beads (13) are respectively disposed in the multiple round holes (12).

4. A redundant electric steering gear housing according to claim 1, characterized in that: Multiple springs (8) are respectively fixedly installed on the inner surface of multiple hollow columns (5), and multiple rings (9) are respectively fixedly installed on the right end of multiple springs (8); Among them, multiple fixed rollers (10) are fixedly sleeved on the inner surface of multiple rings (9), and multiple fixed rollers (10) are slidably sleeved on the inner surface of multiple hollow columns (5).

5. A redundant electric steering gear housing according to claim 1, characterized in that: The disassembly and assembly mechanism also includes a rubber sealing ring (14), anti-slip texture (15) and an expansion spring (16). The rubber sealing ring (14) is fixedly installed on the inner surface of the first connecting plate (2), and the expansion spring (16) is fixedly installed on the inner surface of the rubber sealing ring (14). Among them, the anti-slip texture (15) is formed on the outer surface of the rubber sealing ring (14), and the anti-slip texture (15) is set in a stripe shape.

6. A redundant electric steering gear housing according to claim 1, characterized in that: The anti-slip texture (15) is replaced with a diamond-shaped grid, which specifically serves to prevent slipping. The anti-slip texture (15) is still formed on the outer surface of the rubber sealing ring (14).

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