Steering gear dust cover and steering gear protection assembly shared by left and right rudder vehicle types

Abstract

The utility model relates to a steering gear dust cover shared by left and right rudder vehicle models, which comprises a cover body, a mounting ring, a left rudder positioning part and a right rudder positioning part, the cover body and the mounting ring are respectively of a left mirror image structure and a right mirror image structure and take a first plane as a mirror image surface, the left rudder positioning part and the right rudder positioning part are mirror image structures of each other, and the mirror image surfaces are the first plane. A diverter guard assembly is also provided. The left rudder positioning part and the right rudder positioning part are arranged on the mounting ring at the same time, when the mounting ring is connected with a left rudder vehicle type, the left rudder positioning part plays a positioning role, and then a receding groove used for containing the right rudder positioning part is formed in a steering gear shell of the left rudder vehicle type; when the mounting ring is connected with a right-rudder vehicle model, the right-rudder positioning part plays a role, and a receding groove for containing the left-rudder positioning part is formed in a steering gear shell of the right-rudder vehicle model; and therefore, the steering gear dust cover can be compatible with left and right rudder vehicle types and can be shared by the left and right rudder vehicle types, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile production, and more specifically to a steering gear dust cover and a steering gear protection component shared by left and right rudder models. Background Art

[0002] In automobile production, in order to meet the business needs of overseas vehicles, some vehicles are designed with both left and right hand steering models. In left and right hand steering models, the steering gear, steering gear housing, steering gear dust cover and other parts of the car are mirror images of each other and cannot be shared. The steering gear dust cover is usually a plastic part, which generally needs to be produced separately using two sets of mirror images of each other. The mold cost of the product is high, resulting in a relatively high cost of the steering gear dust cover produced. Especially for some overseas vehicles with low production, the number of steering gear dust covers produced by a single set of molds is small, which further increases the production cost of the vehicle. At the same time, the steering gear dust cover is cylindrical as a whole, and the steering gear dust covers of left and right hand steering models are similar. Workers may also take the wrong materials during assembly, affecting production efficiency. Utility Model Content

[0003] The utility model aims to overcome the defect in the prior art that the dust cover of the steering gear cannot be shared by left-hand and right-hand drive vehicles, and provides a steering gear dust cover and a steering gear protection assembly shared by left-hand and right-hand drive vehicles, thereby solving the problem that the dust cover of the steering gear cannot be shared.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a steering gear dust cover shared by left-hand and right-hand drive vehicles, comprising: a cover body, a mounting ring connected to the cover body, a left-hand drive positioning part and a right-hand drive positioning part respectively connected to the mounting ring, the cover body and the mounting ring are respectively left-hand and right-hand drive mirror structures and both use a first plane as a mirror plane, the left-hand drive positioning part and the right-hand drive positioning part are mirror structures of each other and the mirror planes are the same as the first plane, the left-hand drive positioning part is used to play a positioning role when connected to a left-hand drive vehicle, and the right-hand drive positioning part is used to play a positioning role when connected to a right-hand drive vehicle.

[0005] In order to make the steering gear dust cover common to left-hand and right-hand drive vehicles, the cover body and the mounting ring of the protective cover are respectively mirror-image structures, so that the protective cover can be respectively put on the steering gears of left-hand and right-hand drive vehicles without interference; in addition, the steering gear dust cover is connected to the steering gear housing, and the steering gear housings of left-hand and right-hand drive vehicles are mirror-image parts of each other. The connection structure of the mounting ring and the steering gear housing needs to be compatible with left-hand and right-hand drive vehicles, so a left-hand rudder positioning part and a right-hand rudder positioning part are simultaneously provided on the mounting ring, and the left-hand rudder positioning part and the right-hand rudder positioning part are mirror-image structures of each other. When the mounting ring is connected to the left-hand rudder vehicle, the left-hand rudder positioning part plays a positioning role, and then an air avoidance groove for the right-hand rudder positioning part is provided on the steering gear housing of the left-hand rudder vehicle. When the mounting ring is connected to the right-hand rudder vehicle, the right-hand rudder positioning part plays a positioning role, and then an air avoidance groove for the left-hand rudder positioning part is provided on the steering gear housing of the right-hand rudder vehicle, so that the steering gear dust cover can be compatible with left-hand and right-hand drive vehicles, so that left-hand and right-hand drive vehicles can share the same, thereby reducing production costs, and workers will not take the wrong materials during assembly. Furthermore, a limiting hole for limiting the rotation of the sealing ring is provided on the mounting ring. In the actual assembly of the steering gear dust cover, when the mounting ring is connected to the steering gear housing, a sealing ring is also installed between the mounting ring and the steering gear housing to improve the sealing effect, a limiting hole is provided on the mounting ring, and a protrusion that cooperates with the limiting hole is provided on the sealing ring, thereby preventing the sealing ring from rotating and ensuring the sealing effect.

[0006] Preferably, the left rudder positioning portion and the right rudder positioning portion are respectively connected to the bottom surface of the mounting ring.

[0007] In order to fully avoid the structural strength of the left rudder positioning part and the right rudder positioning part, and to avoid the left rudder positioning part and the right rudder positioning part from bending or breaking during assembly, the left rudder positioning part and the right rudder positioning part are arranged on the bottom surface of the mounting ring. Compared with the connection with the side surface of the mounting ring, the structure connected to the bottom surface of the mounting ring is more reliable.

[0008] Preferably, the left rudder positioning portion and the right rudder positioning portion are respectively provided with distinguishing marks, and the distinguishing marks are located on the cover body or the mounting ring.

[0009] The left rudder positioning part and the right rudder positioning part are the main positioning structures. Their assembly positions are relatively important during installation. Distinguishing marks are set to facilitate workers' identification and alignment.

[0010] Preferably, the distinguishing marks are located directly above the left rudder positioning portion and the right rudder positioning portion, respectively.

[0011] The distinguishing marks are respectively set above the left rudder positioning part and the right rudder positioning part. The distinguishing marks clearly correspond to the left rudder positioning part and the right rudder positioning part, which is convenient for workers to distinguish and avoids confusion of the marks.

[0012] Preferably, alignment strips are respectively provided on the outer sides of the left rudder positioning portion and the right rudder positioning portion, and the alignment strips are lower than the bottom surface of the mounting ring.

[0013] The alignment bar is set to facilitate workers to confirm whether the steering gear dust cover is installed in place. The alignment bar is lower than the bottom surface of the mounting ring, and the bottom surface of the mounting ring abuts against the top surface of the steering gear housing. The alignment bar is set to facilitate identification of the top surface position of the steering gear housing. When the top surface position of the steering gear housing is higher than the alignment bar, it is considered that the steering gear dust cover is installed in place.

[0014] Preferably, the alignment strip is parallel to the bottom surface of the mounting ring.

[0015] The alignment strip is parallel to the bottom surface of the mounting ring as a whole, ensuring the alignment visual effect and increasing the comparison effect.

[0016] Preferably, the left rudder positioning portion and the right rudder positioning portion are both in the shape of an inverted triangle.

[0017] The left rudder positioning portion and the right rudder positioning portion are both in the shape of an inverted triangle. When the steering gear dust cover is installed, the inverted triangle structure has a guiding function, and compared with the rectangle, the inverted triangle has a better positioning effect.

[0018] Preferably, the left rudder positioning portion and the right rudder positioning portion respectively form a positioning portion angle a with the axis line of the mounting ring, and the angle of the positioning portion angle a is greater than or equal to 60° and less than or equal to 136°.

[0019] Define the vector of the steering gear dust cover when the left rudder is installed as When the right rudder is installed, the vector of the steering gear dust cover is The vector of the rotation axis (i.e. the axis of the steering gear input shaft) when the right rudder is installed is By the Rodrigues rotation formula: The rotation angle θ of the left and right steering gear dust covers is obtained, and the specific positions of the left and right steering gear positioning parts are set according to the angle of the rotation angle θ, so that the steering gear dust covers can be shared on left and right steering gear models. According to the numerical range of the calculated rotation angle θ of different models, it is greater than or equal to 60° and less than or equal to 136°, so the angle of the positioning part angle a is set to be greater than or equal to 60° and less than or equal to 136°.

[0020] A steering gear protection assembly comprises a steering gear dust cover, a left-hand rudder steering gear housing and a right-hand rudder steering gear housing, which are common to the above-mentioned left-hand rudder vehicle models; the left-hand rudder steering gear housing comprises a left-hand rudder mounting portion connected to the mounting ring, the left-hand rudder mounting portion is provided with a left-hand rudder slot connected to the left-hand rudder positioning portion and a first avoidance portion for avoiding the right-hand rudder positioning portion; the right-hand rudder steering gear housing comprises a right-hand rudder mounting portion connected to the mounting ring, the right-hand rudder mounting portion is provided with a right-hand rudder slot connected to the right-hand rudder positioning portion and a second avoidance portion for avoiding the left-hand rudder positioning portion; the left-hand rudder steering gear housing and the right-hand rudder steering gear housing are mirror image parts of each other.

[0021] When the steering gear dust cover is connected to the left-rudder steering gear housing, its left-rudder positioning part is connected to the left-rudder slot, and its right-rudder positioning part is located in the first avoidance part, thereby realizing the installation of the steering gear dust cover; when the steering gear dust cover is connected to the right-rudder steering gear housing, its right-rudder positioning part is connected to the right-rudder slot, and its left-rudder positioning part is located in the second avoidance part, thereby realizing the installation of the steering gear dust cover, thereby making the steering gear dust cover common to left-rudder and right-rudder models, thereby reducing production costs.

[0022] Preferably, the opening of the left rudder slot is radially arranged toward the left rudder steering gear housing, the opening of the first avoidance portion is axially arranged toward the left rudder steering gear housing, the opening of the right rudder slot is radially arranged toward the right rudder steering gear housing, and the opening of the second avoidance portion is axially arranged toward the right rudder steering gear housing.

[0023] When workers install the steering gear dust cover, they generally stand in the radial position of the steering gear housing, specifically in front of the steering gear housing. Therefore, the opening directions of the left rudder slot, the first air avoidance portion, the right rudder slot and the second air avoidance portion are further set to facilitate workers to observe the installation status of the steering gear dust cover.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] A left-hand rudder positioning part and a right-hand rudder positioning part are simultaneously arranged on the mounting ring. When the mounting ring is connected to a left-hand rudder vehicle model, the left-hand rudder positioning part plays a positioning role, and then a clearance groove for accommodating the right-hand rudder positioning part is arranged on the steering gear housing of the left-hand rudder vehicle model, so that the steering gear dust cover can be installed on the left-hand rudder vehicle model; when the mounting ring is connected to a right-hand rudder vehicle model, the right-hand rudder positioning part plays a role, and then a clearance groove for accommodating the left-hand rudder positioning part is arranged on the steering gear housing of the right-hand rudder vehicle model, so that the steering gear dust cover can be installed on the right-hand rudder vehicle model; thereby, the steering gear dust cover can be compatible with left-hand and right-hand rudder vehicles, realizes the sharing of left-hand and right-hand rudder vehicles, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the overall structure of the steering gear dust cover common to left and right rudder vehicles of the utility model;

[0027] Figure 2 It is a schematic diagram of a first plane and an alignment strip of a steering gear dust cover common to left and right-hand drive vehicles of the utility model;

[0028] Figure 3 It is a structural schematic diagram of a left rudder steering gear housing of a steering gear protection assembly of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the left rudder steering gear housing of the steering gear protection assembly of the utility model from another angle;

[0030] Figure 5 It is a structural schematic diagram of a right rudder steering gear housing of a steering gear protection assembly of the utility model;

[0031] Figure 6 It is a structural schematic diagram of the right rudder steering gear housing of the steering gear protection assembly of the utility model from another angle;

[0032] Figure 7 It is a schematic diagram of the connection between the left rudder steering gear housing and the steering gear dust cover of the steering gear protection assembly of the utility model;

[0033] Figure 8 It is a schematic diagram of the connection between the right rudder steering gear housing and the steering gear dust cover of the steering gear protection assembly of the utility model;

[0034] Fig. 9 It is a schematic diagram of the angle a of the positioning portion of the steering gear dust cover common to left and right-hand drive vehicles of the utility model.

[0035] In the figure: 1, cover; 2, mounting ring; 3, left rudder positioning part; 4, right rudder positioning part; 5, first plane; 6, distinguishing mark; 7, alignment strip; 8, left rudder steering gear housing; 801, left rudder slot; 802, first air avoidance part; 9, right rudder steering gear housing; 901, right rudder slot; 902, second air avoidance part; 10, limiting hole. DETAILED DESCRIPTION

[0036] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0037] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0039] Example 1

[0040] like Figure 1-2 As shown, the steering gear dust cover shared by left-hand and right-hand drive vehicles comprises: a cover body 1, a mounting ring 2 connected to the cover body 1, a left-hand drive positioning portion 3 and a right-hand drive positioning portion 4 respectively connected to the mounting ring 2, the cover body 1 and the mounting ring 2 are respectively left-hand and right-hand drive mirror structures and both use a first plane 5 as a mirror plane, the left-hand drive positioning portion 3 and the right-hand drive positioning portion 4 are mirror structures of each other and the mirror planes are both the first plane 5, the left-hand drive positioning portion 3 is used for positioning when connected to a left-hand drive vehicle, and the right-hand drive positioning portion 4 is used for positioning when connected to a right-hand drive vehicle.

[0041] In order to make the steering gear dust cover common to left-hand and right-hand drive vehicles, the cover body 1 and the mounting ring 2 of the protective cover are respectively left and right mirror structures, so that the protective cover can be respectively put on the steering gear of left-hand and right-hand drive vehicles without interference; in addition, the steering gear dust cover is connected to the steering gear housing, and the steering gear housings of left-hand and right-hand drive vehicles are mirror parts of each other. The connection structure of the mounting ring 2 and the steering gear housing needs to be compatible with left-hand and right-hand drive vehicles, so the left-hand rudder positioning part 3 and the right-hand rudder positioning part 4 are simultaneously provided on the mounting ring 2, and the left-hand rudder positioning part 3 and the right-hand rudder positioning part 4 They are mirror images of each other. When the mounting ring 2 is connected to a left-hand drive vehicle, the left-hand drive positioning portion 3 plays a positioning role, and then a clearance groove for the right-hand drive positioning portion 4 is provided on the steering gear housing of the left-hand drive vehicle. When the mounting ring 2 is connected to a right-hand drive vehicle, the right-hand drive positioning portion 4 plays a positioning role, and then a clearance groove for the left-hand drive positioning portion 3 is provided on the steering gear housing of the right-hand drive vehicle. As a result, the steering gear dust cover can be compatible with left-hand and right-hand drive vehicles, so that left-hand and right-hand drive vehicles can share the same function, thereby reducing production costs and workers will not take wrong materials during assembly.

[0042] Furthermore, a limiting hole 10 for limiting the rotation of the sealing ring is provided on the mounting ring 2. In the actual assembly of the steering gear dust cover, when the mounting ring 2 is connected to the steering gear housing, a sealing ring is also installed between the mounting ring 2 and the steering gear housing to improve the sealing effect. The limiting hole 10 is provided on the mounting ring 2, and a protrusion matching the limiting hole 10 is provided on the sealing ring, thereby preventing the sealing ring from rotating and ensuring the sealing effect.

[0043] The beneficial effects of this embodiment are as follows: a left-hand rudder positioning portion 3 and a right-hand rudder positioning portion 4 are simultaneously provided on the mounting ring 2; when the mounting ring 2 is connected to a left-hand rudder vehicle type, the left-hand rudder positioning portion 3 plays a positioning role, and then a clearance groove for accommodating the right-hand rudder positioning portion 4 is provided on the steering gear housing of the left-hand rudder vehicle type, so that the steering gear dust cover can be installed on the left-hand rudder vehicle type; when the mounting ring 2 is connected to a right-hand rudder vehicle type, the right-hand rudder positioning portion 4 plays a role, and then a clearance groove for accommodating the left-hand rudder positioning portion 3 is provided on the steering gear housing of the right-hand rudder vehicle type, so that the steering gear dust cover can be installed on the right-hand rudder vehicle type; thereby, the steering gear dust cover can be compatible with left-hand and right-hand rudder vehicles, realizes the sharing of left-hand and right-hand rudder vehicles, and reduces production costs.

[0044] Example 2

[0045] Based on Example 1, the difference from Example 1 is that:

[0046] like Figure 1-2 As shown, the left rudder positioning portion 3 and the right rudder positioning portion 4 are respectively connected to the bottom surface of the mounting ring 2. The left rudder positioning portion 3 and the right rudder positioning portion 4 are respectively corresponding to a distinguishing mark 6, and the distinguishing mark 6 is located on the cover body 1 or the mounting ring 2. The distinguishing marks 6 are respectively located directly above the left rudder positioning portion 3 and the right rudder positioning portion 4. The outer surfaces of the left rudder positioning portion 3 and the right rudder positioning portion 4 are respectively provided with an alignment strip 7, and the alignment strip 7 is lower than the bottom surface of the mounting ring 2. The alignment strip 7 is parallel to the bottom surface of the mounting ring 2. The left rudder positioning portion 3 and the right rudder positioning portion 4 are respectively in the shape of an inverted triangle. As shown Fig. 9 As shown, the left rudder positioning portion 3 and the right rudder positioning portion 4 respectively form a positioning portion angle a with the axis line of the mounting ring 2, and the angle of the positioning portion angle a is greater than or equal to 60° and less than or equal to 136°.

[0047] In order to fully avoid the structural strength of the left rudder positioning part 3 and the right rudder positioning part 4, and to avoid the left rudder positioning part 3 and the right rudder positioning part 4 from bending or breaking during assembly, the left rudder positioning part 3 and the right rudder positioning part 4 are arranged on the bottom surface of the mounting ring 2. Compared with the connection with the side of the mounting ring 2, the structure connected with the bottom surface of the mounting ring 2 is more reliable. The left rudder positioning part 3 and the right rudder positioning part 4 are the main positioning structures, and their assembly positions are more important during installation. The setting of the distinguishing mark 6 is convenient for workers to identify and align. The distinguishing mark 6 is respectively set directly above the left rudder positioning part 3 and the right rudder positioning part 4. The distinguishing mark 6 clearly corresponds to the left rudder positioning part 3 and the right rudder positioning part 4, which is convenient for workers to distinguish and avoids the confusion of marks. The alignment strip 7 is provided to facilitate workers to confirm whether the steering gear dust cover is installed in place. The alignment strip 7 is lower than the bottom surface of the mounting ring 2. The bottom surface of the mounting ring 2 abuts against the top surface of the steering gear housing. The alignment strip 7 is provided to facilitate identification of the top surface position of the steering gear housing. When the top surface position of the steering gear housing is higher than the alignment strip 7, it is considered that the steering gear dust cover is installed in place. The left rudder positioning part 3 and the right rudder positioning part 4 are both inverted triangles. When the steering gear dust cover is installed, the inverted triangle structure has guiding properties, and compared with the rectangle, the inverted triangle has a better positioning effect. The alignment strip 7 is parallel to the bottom surface of the mounting ring 2 as a whole, which ensures the visual effect of alignment and increases the comparison effect.

[0048] Define the vector of the steering gear dust cover when the left rudder is installed as When the right rudder is installed, the vector of the steering gear dust cover is The vector of the rotation axis (i.e. the axis of the steering gear input shaft) when the right rudder is installed is By the Rodrigues rotation formula: The rotation angle θ of the left and right steering gear dust covers is obtained, and the specific positions of the left and right steering gear positioning parts 3 and 4 are set according to the rotation angle θ, so that the steering gear dust covers can be shared on left and right steering gear models. According to the numerical range of the calculated rotation angle θ of different models, it is greater than or equal to 60° and less than or equal to 136°, so the angle of the positioning part angle a is set to be greater than or equal to 60° and less than or equal to 136°.

[0049] Furthermore, the distinguishing mark 6 is a Chinese character or an English character, which is easy to identify and will not cause confusion.

[0050] Furthermore, the distinguishing mark 6 corresponding to the left rudder positioning portion 3 is “left rudder”, and the distinguishing mark 6 corresponding to the right rudder positioning portion 4 is “right rudder”.

[0051] The remaining features and working principles of this embodiment are consistent with those of Embodiment 1.

[0052] Example 3

[0053] like Figure 3-8As shown, the steering gear protection assembly includes a steering gear dust cover, a left-rudder steering gear housing 8 and a right-rudder steering gear housing 9, which are common to left-rudder and right-rudder vehicles of Example 1 or Example 2; the left-rudder steering gear housing 8 includes a left-rudder mounting portion for connecting to the mounting ring 2, the left-rudder mounting portion is provided with a left-rudder slot 801 for connecting to the left-rudder positioning portion 3 and a first avoidance portion 802 for avoiding the right-rudder positioning portion 4; the right-rudder steering gear housing 9 includes a right-rudder mounting portion for connecting to the mounting ring 2, the right-rudder mounting portion is provided with a right-rudder slot 901 for connecting to the right-rudder positioning portion 4 and a second avoidance portion 902 for avoiding the left-rudder positioning portion 3; the left-rudder steering gear housing 8 and the right-rudder steering gear housing 9 are mirror image parts of each other.

[0054] When the steering gear dust cover is connected to the left-rudder steering gear housing 8, its left-rudder positioning portion 3 is connected to the left-rudder slot 801, and its right-rudder positioning portion 4 is located in the first avoidance portion 802, thereby realizing the installation of the steering gear dust cover; when the steering gear dust cover is connected to the right-rudder steering gear housing 9, its right-rudder positioning portion 4 is connected to the right-rudder slot 901, and its left-rudder positioning portion 3 is located in the second avoidance portion 902, thereby realizing the installation of the steering gear dust cover, thereby making the steering gear dust cover common to left-rudder and right-rudder models, thereby reducing production costs.

[0055] Furthermore, the opening of the left rudder slot 801 is radially arranged toward the left rudder steering gear housing 8, the opening of the first avoidance portion 802 is axially arranged toward the left rudder steering gear housing 8, the opening of the right rudder slot 901 is radially arranged toward the right rudder steering gear housing 9, and the opening of the second avoidance portion 902 is axially arranged toward the right rudder steering gear housing 9.

[0056] When workers install the steering gear dust cover, they generally stand in the radial position of the steering gear housing, specifically in front of the steering gear housing. Therefore, the opening directions of the left rudder slot 801, the first avoidance portion 802, the right rudder slot 901 and the second avoidance portion 902 are further set to facilitate workers to observe the installation status of the steering gear dust cover.

[0057] The rest of the working principle and working process of this embodiment are consistent with those of Embodiment 1 or Embodiment 2.

[0058] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. The steering gear dust cover is common to both left and right hand steering vehicles, characterized in that: include: A cover body (1), a mounting ring (2) connected to the cover body (1), and a left rudder positioning portion (3) and a right rudder positioning portion (4) respectively connected to the mounting ring (2); the cover body (1) and the mounting ring (2) are both left and right mirror structures and both use a first plane (5) as a mirror surface; the left rudder positioning portion (3) and the right rudder positioning portion (4) are mirror structures and the mirror surfaces are both the first plane (5); the left rudder positioning portion (3) is used to play a positioning role when connected to a left-rudder vehicle, and the right rudder positioning portion (4) is used to play a positioning role when connected to a right-rudder vehicle.

2. The steering gear dust cover common to left and right-hand drive vehicles according to claim 1, characterized in that: The left rudder positioning portion (3) and the right rudder positioning portion (4) are respectively connected to the bottom surface of the mounting ring (2).

3. The steering gear dust cover common to left and right-hand drive vehicles according to claim 1, characterized in that: The left rudder positioning portion (3) and the right rudder positioning portion (4) are respectively provided with a corresponding distinguishing mark (6), and the distinguishing mark (6) is located on the cover body (1) or the mounting ring (2).

4. The steering gear dust cover common to left and right-hand drive vehicles according to claim 3, characterized in that: The distinguishing marks (6) are respectively located directly above the left rudder positioning portion (3) and the right rudder positioning portion (4).

5. The steering gear dust cover common to left and right-hand drive vehicles according to claim 1, characterized in that: The outer sides of the left rudder positioning portion (3) and the right rudder positioning portion (4) are respectively provided with alignment strips (7), and the alignment strips (7) are lower than the bottom surface of the mounting ring (2).

6. The steering gear dust cover common to left and right-hand drive vehicles according to claim 5, characterized in that: The alignment strip (7) is parallel to the bottom surface of the mounting ring (2).

7. The steering gear dust cover common to left and right-hand drive vehicles according to claim 1, characterized in that: The left rudder positioning portion (3) and the right rudder positioning portion (4) are both in the shape of an inverted triangle.

8. The steering gear dust cover common to left and right-hand drive vehicles according to claim 1, characterized in that: The left rudder positioning portion (3) and the right rudder positioning portion (4) respectively form a positioning portion angle a with the axis connecting line of the mounting ring (2), and the angle of the positioning portion angle a is greater than or equal to 60° and less than or equal to 136°.

9. Steering gear protection assembly, characterized in that: The invention comprises a steering gear dust cover, a left-hand rudder steering gear housing (8) and a right-hand rudder steering gear housing (9) common to left-hand rudder and right-hand rudder vehicles as described in any one of claims 1 to 8; the left-hand rudder steering gear housing (8) comprises a left-hand rudder mounting portion for connecting to the mounting ring (2), the left-hand rudder mounting portion is provided with a left-hand rudder slot (801) for connecting to the left-hand rudder positioning portion (3) and a first avoidance portion (802) for avoiding the right-hand rudder positioning portion (4); the right-hand rudder steering gear housing (9) comprises a right-hand rudder mounting portion for connecting to the mounting ring (2), the right-hand rudder mounting portion is provided with a right-hand rudder slot (901) for connecting to the right-hand rudder positioning portion (4) and a second avoidance portion (902) for avoiding the left-hand rudder positioning portion (3); the left-hand rudder steering gear housing (8) and the right-hand rudder steering gear housing (9) are mirror image parts of each other.

10. The steering gear protection assembly according to claim 9, characterized in that: The opening of the left rudder card slot (801) is radially arranged toward the left rudder steering gear housing (8), the opening of the first air avoidance portion (802) is axially arranged toward the left rudder steering gear housing (8), the opening of the right rudder card slot (901) is radially arranged toward the right rudder steering gear housing (9), and the opening of the second air avoidance portion (902) is axially arranged toward the right rudder steering gear housing (9).

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