Vehicle suspension device

Abstract

To provide a vehicle suspension device which can prevent an on-vehicle antenna from receiving noise of a damper.SOLUTION: A vehicle suspension device includes a damper which is attached to a space between a vehicle body and a wheel to damp vertical vibration of the wheel. An upper end of a rod provided at the damper is curved in a direction other than a direction in which the on-vehicle antenna is provided.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a suspension system for a vehicle. [Background technology]

[0002] Patent Document 1 discloses a vehicle suspension device that detects the height of the road surface in front of the wheels and controls the suspension stroke. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-70344 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the suspension device disclosed in Patent Document 1, noise generated from the damper's drive mechanism (e.g., a motor, a solenoid, etc.) is transmitted to the rod via stray capacitance within the device, and the noise is radiated from the tip of the rod. If this noise is received by the vehicle-mounted antenna, it may cause adverse effects such as making it difficult to receive radio waves from the vehicle-mounted radio or television, or distorting the sound or image.

[0005] The present disclosure has been made in consideration of the above, and has an object to provide a vehicle suspension device that can prevent damper noise from being received by an on-board antenna. [Means for solving the problem]

[0006] The vehicle suspension device of the present disclosure is attached between a vehicle body and a wheel and includes a damper for damping vertical vibrations of the wheel, and the upper end of a rod provided on the damper is curved in a direction other than the direction in which the vehicle-mounted antenna is provided. Effect of the Invention

[0007] According to the present disclosure, since the upper end of the rod is curved in a direction other than the direction in which the vehicle-mounted antenna is provided, noise from the damper can be prevented from being received by the vehicle-mounted antenna. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of the configuration of a vehicle equipped with a vehicle suspension device according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of a configuration of a damper of the suspension device of the vehicle according to the embodiment. [Diagram 3] FIG. 3 is a diagram showing an example of an internal configuration of a damper of the suspension device for a vehicle according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A vehicle suspension device according to an embodiment of the present disclosure will be described with reference to the drawings. Note that components in the following embodiments include those that are easily replaceable by a person skilled in the art, or those that are substantially the same.

[0010] The vehicle suspension device according to the embodiment is an electronically controlled suspension device mounted on a vehicle. The vehicle suspension device according to the embodiment may be mounted on, for example, a general engine vehicle (conventional vehicle), a hybrid vehicle (HEV: Hybrid Electric Vehicle), or a plug-in hybrid vehicle (PHEV: Plug-in Hybrid Electric Vehicle). The vehicle suspension device according to the embodiment may also be mounted on, for example, a fuel cell electric vehicle (FCEV: Fuel Cell Electric Vehicle) or an electric vehicle (BEV: Battery Electric Vehicle).

[0011] A vehicle to which the vehicle suspension device according to the embodiment is applied includes, for example, as shown in Fig. 1, a vehicle body 1, a plurality of wheels 2, a plurality of dampers 3, and an on-vehicle antenna 4. The vehicle suspension device according to the embodiment includes a damper 3 as shown in Figs. 2 and 3.

[0012] The dampers 3 are for damping the vertical vibrations of the wheels 2. The dampers 3 are attached between the vehicle body 1 and each wheel 2. The dampers 3 include an outer cylinder 31, a spring 32, a rod 33, a drive mechanism 34, and a control line 35.

[0013] The outer cylinder 31 is a cylindrical cylinder. For example, a magnetorheological fluid (MRF) is filled inside the outer cylinder 31. A rod 33 and a drive mechanism 34 are housed inside the outer cylinder 31.

[0014] The spring 32 is a member for supporting the weight of the vehicle body 1. The spring 32 is disposed around the outer cylinder 31.

[0015] The rod 33 is a piston rod that slides inside the outer cylinder 31. The rod 33 is driven up and down inside the outer cylinder 31 by a drive mechanism 34. An upper end (tip) 331 of the rod 33 is curved in a direction other than the direction in which the vehicle-mounted antenna 4 (see FIG. 1) is provided. That is, the upper end 331 of the rod 33 is bent in a direction other than the direction in which the vehicle-mounted antenna 4 is provided.

[0016] The drive mechanism 34 is for driving the rod 33 in the outer cylinder 31. Examples of the drive mechanism 34 include a motor and a solenoid. The control line 35 is for passing a current to operate the drive mechanism 34.

[0017] Here, in a conventional vehicle suspension device, for example, a rod in a damper is formed in a straight line, and the upper end of the rod is not curved. In such a suspension device, when a current is passed through a control line to operate a drive mechanism (e.g., a motor, a solenoid, etc.), noise from the electric signal flows into the damper. Then, due to electrostatic coupling between the drive mechanism and the rod, noise enters the rod and is radiated from the upper end of the rod. As a result, the radiated noise is received by the vehicle-mounted antenna, which may adversely affect the receiving device (vehicle-mounted radio, vehicle-mounted television).

[0018] Therefore, in the suspension device according to the embodiment, the upper end 331 of the rod 33 provided in the damper 3 is curved in a direction other than the direction in which the vehicle-mounted antenna 4 is provided. Also, for example, as shown in Fig. 1, when the vehicle-mounted antenna 4 is attached to the upper part of the vehicle body 1, the damper 3 is installed so that the curved upper end 331 faces a direction other than the upper part of the vehicle body 1 (for example, an outward direction when viewed from the side).

[0019] In this way, by bending the upper end 331 of the rod 33, it is possible to radiate the noise propagated to the rod 33 in a direction other than the direction in which the on-board antenna 4 is provided, as shown in Fig. 1 for example. That is, in the suspension device according to the embodiment, the on-board antenna 4 is not provided in the direction in which the noise is radiated, so that the effect of the noise on the receiving device can be reduced.

[0020] According to the vehicle suspension device of the embodiment described above, the upper end 331 of the rod 33 is curved in a direction other than the direction in which the vehicle antenna 4 is provided, thereby preventing the vehicle antenna 4 from receiving noise from the damper 3.

[0021] Furthermore, according to the vehicle suspension device of the embodiment, the shape of the upper end 311 of the rod 33 is designed to reduce the effect of noise on the in-vehicle antenna 4. This makes it possible to improve the reception of in-vehicle radios, in-vehicle televisions, etc., without incurring tradeoffs such as increased costs and weight due to the addition of noise suppression parts, for example.

[0022] Further advantages and modifications may readily occur to those skilled in the art. Thus, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and equivalents thereof. [Explanation of symbols]

[0023] 1. Vehicle body 2 wheels 3 Damper 31 Outer cylinder 32 Spring 33 Rod 331 Upper end 34 Drive mechanism 35 Control Line 4 Vehicle antenna

Claims

[Claim 1] A damper is provided between a vehicle body and a wheel for damping vertical vibration of the wheel, The upper end of the rod provided in the damper is curved in a direction other than the direction in which the vehicle-mounted antenna is provided. A vehicle suspension device.

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