Adjustable length drop arm assembly

Abstract

The present invention discloses an adjustable-length drop arm assembly. It comprises a drop arm body, one end of which serves as a large end for the steering drop arm, and the other end as a small end for the steering drop arm. The large end of the steering drop arm defines a spline hole for connection to the steering gear, while the small end of the steering drop arm defines a tapered pin hole. A pin hole member, whose outer contour matches the pin hole, is positioned within the pin hole. The pin hole member is provided with two or more tapered pin holes for connection to the steering tie rod. By utilizing the two or more tapered pin holes within the pin hole member, the present invention allows for adjustable length of the drop arm assembly, adapting to different suspension systems and saving costs.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile steering systems, and in particular relates to a drop arm assembly with adjustable length. Background Art

[0002] The steering drop arm connects the steering gear and the steering tie rod. The existing steering drop arm features a splined hole on the large end, which connects to the steering gear output via the spline. The small end of the steering drop arm features a pin hole, which connects to the steering tie rod. Because suspension systems vary in stiffness, length, height, and other dimensions across different vehicle models, and the suspension and steering systems interact (interference occurs), different suspension systems inevitably affect the steering system's kinematics, including the length of the steering tie rod and the steering drop arm.

[0003] In existing technology, the steering tie rod is often designed with an adjustable length, while the steering drop arm is a fixed length. This approach addresses different suspension systems by simply designing different tie rod lengths. This solution has certain drawbacks, as the drop arm length is not adjustable. Designing multiple drop arm lengths increases the number of drop arm types and procurement costs. However, in steering systems, adjusting the drop arm length can improve steering angle and suspension system compatibility (improving interference), ultimately enhancing comfort.

[0004] Therefore, in the prior art, a fixed-length drop arm is used to cope with various suspensions, that is, the length of the drop arm cannot be adjusted. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and provide a drop arm assembly with adjustable length.

[0006] The technical solution adopted by the present invention is: a drop arm assembly with adjustable length, including a drop arm body, one end of the drop arm body is the large end of the steering drop arm, and the other end is the small end of the steering drop arm, the large end of the steering drop arm is provided with a spline hole for connecting to the steering gear, and the small end of the steering drop arm is provided with a pin hole, the pin hole is conical, and a pin hole member with an outer contour consistent with the pin hole is sleeved in the pin hole, and two or more tapered pin holes are provided in the pin hole member for connecting to the steering rod.

[0007] In a further preferred structure, the distances between the plurality of tapered pin holes and the center of the pin hole member are unequal.

[0008] In a further preferred structure, the plurality of tapered pin holes include a first tapered pin hole and a second tapered pin hole.

[0009] In a further preferred structure, the first tapered pin hole and the second tapered pin hole are symmetrically distributed on the upper and lower sides of the center of the pin hole component, and are at unequal distances from the center of the pin hole component.

[0010] In a further preferred structure, the distance L1 between the central axis of the first tapered pin hole and the center of the pin hole member is 20 to 30 mm.

[0011] In a further preferred structure, the distance L2 between the center axis of the second tapered pin hole and the center of the pin hole member is 30 to 60 mm.

[0012] The distance L2 between the center axis of the second tapered pin hole and the center of the pin hole component is 10-30 mm longer than the distance L1 between the center axis of the first tapered pin hole and the center of the pin hole component.

[0013] The thickness of the pin hole member is 80-100 mm, and the length of the pin hole member is 120-150 mm.

[0014] In a further preferred structure, the pin hole member is symmetrical up and down, and the pin hole member can be turned up and down 180 degrees to be inserted into the pin hole of the vertical arm assembly.

[0015] A steering system includes the adjustable-length drop arm assembly, wherein the large end of the steering drop arm at one end of the adjustable-length drop arm assembly is connected to a steering gear, and the small end of the steering drop arm at the other end of the adjustable-length drop arm assembly is connected to a steering tie rod.

[0016] The beneficial effects of the present invention are as follows: the length of the drop arm assembly can be adjusted by means of two or more tapered pin holes provided in the pin hole member, so as to cope with different suspension systems and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Front view of the prior art drop arm assembly;

[0018] Figure 2 Cross-sectional view of prior art drop arm assembly;

[0019] Figure 3 The front view of the adjustable length drop arm assembly of the present invention;

[0020] Figure 4 A cross-sectional view of the adjustable length drop arm assembly of the present invention;

[0021] Figure 5 Schematic diagram of the pin hole structure of the present invention.

[0022] In the figure, 1-drop arm assembly, 100-drop arm body, 200-steering drop arm big end, 201-spline hole, 300-steering drop arm small end, 301-pin hole, 2-steering tie rod, 3-pin hole member, 310-first tapered pin hole, 320-second tapered pin hole. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as limiting the present invention.

[0025] like Figure 1-4 As shown, the present invention includes a drop arm body 100, one end of the drop arm body 100 is a steering drop arm big end 200, and the other end is a steering drop arm small end 300, the steering drop arm big end 200 is provided with a spline hole 201 for connecting to the steering gear, and the steering drop arm small end 300 is provided with a pin hole 301, the pin hole 301 is conical, and a pin hole member 3 with an outer contour consistent with the pin hole is sleeved in the pin hole 301, and two or more tapered pin holes are provided in the pin hole member 3 for connecting to the steering rod.

[0026] The distances between the plurality of tapered pin holes and the center of the pin hole member 3 are not equal.

[0027] The plurality of tapered pin holes include a first tapered pin hole 310 and a second tapered pin hole 320 .

[0028] The first tapered pin hole 310 and the second tapered pin hole 320 are symmetrically distributed on the upper and lower sides of the center of the pin hole component 3 , and are unequally spaced from the center of the pin hole component 3 .

[0029] like Figure 5 As shown, the distance L1 between the center axis of the first tapered pin hole 310 and the center of the pin hole member 3 is 20 to 30 mm.

[0030] The length of the distance L2 between the central axis of the second tapered pin hole 320 and the center of the pin hole member 3 is 30 to 60 mm.

[0031] The distance L2 between the center axis of the second tapered pin hole 320 and the center of the pin hole member 3 is 10-30 mm longer than the distance L1 between the center axis of the first tapered pin hole 310 and the center of the pin hole member 3 .

[0032] The thickness of the pin hole member 3 is 80-100 mm, and the length of the pin hole member 3 is 120-150 mm.

[0033] The pin hole member 3 is symmetrical up and down, and can be turned up and down 180 degrees to be inserted into the pin hole 301 of the vertical arm assembly.

[0034] In this embodiment, with two methods and two different center distances, the drop arm assembly can be adjusted to four lengths.

[0035] It should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

[0036] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A drop arm assembly with adjustable length, comprising a drop arm body (100), wherein one end of the drop arm body (100) is a large end (200) of a steering drop arm, and the other end is a small end (300) of a steering drop arm, wherein the large end (200) of the steering drop arm is provided with a spline hole (201) for connecting to a steering gear, and wherein: The small end (300) of the steering vertical arm is provided with a pin hole (301), the pin hole (301) is tapered, a pin hole member (3) having an outer contour consistent with the pin hole is sleeved in the pin hole (301), and two or more tapered pin holes for connecting the steering tie rod are provided in the pin hole member (3); the pin hole member (3) is symmetrical in the upper and lower parts, and the pin hole member (3) can be turned upside down by 180 degrees and inserted into the pin hole (301) of the vertical arm assembly; the distances between the multiple tapered pin holes and the center of the pin hole member (3) are unequal; the multiple tapered pin holes include a first tapered pin hole (310) and a second tapered pin hole (320).

2. The adjustable length drop arm assembly according to claim 1, characterized in that: The first tapered pin hole (310) and the second tapered pin hole (320) are symmetrically distributed on the upper and lower sides of the center of the pin hole component (3), and are unequally spaced from the center of the pin hole component (3).

3. The adjustable length drop arm assembly according to claim 2, characterized in that: The length of the distance L1 between the central axis of the first tapered pin hole (310) and the center of the pin hole member (3) is 20-30 mm.

4. The adjustable length drop arm assembly according to claim 2, characterized in that: The length of the distance L2 between the central axis of the second tapered pin hole (320) and the center of the pin hole member (3) is 30-60 mm.

5. The length-adjustable drop arm assembly according to claim 2, characterized in that: The distance L2 between the central axis of the second tapered pin hole (320) and the center of the pin hole member (3) is 10-30 mm longer than the distance L1 between the central axis of the first tapered pin hole (310) and the center of the pin hole member (3).

6. The length-adjustable drop arm assembly according to claim 1, characterized in that: The thickness of the pin hole member (3) is 80-100 mm, and the length of the pin hole member (3) is 120-150 mm.

7. A steering system, characterized in that: The invention comprises the adjustable length drop arm assembly according to any one of claims 1 to 6, wherein the large end of the steering drop arm at one end of the adjustable length drop arm assembly is connected to the steering gear, and the small end of the steering drop arm at the other end of the adjustable length drop arm assembly is connected to the steering tie rod (2).

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