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Vehicle weight measurement device

A technology for measuring device and weight, applied in measuring device, weighing equipment using fluid balance, weighing, etc., can solve problems such as accidents, tire damage, road maintenance costs, etc., and achieve the effect of preventing wear and tear

Inactive Publication Date: 2020-02-14
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, such overloading has the potential to incur various problems and must be avoided
[0004] (1) Overloading may lead to a decrease in the sports performance of the car and damage to structural elements, which may sometimes cause accidents
For example, there are many factors that lead to accidents, such as damage to the axle (hub), damage (burst) to the tire, longer braking distances, overheating of the brakes and difficulty in functioning, and easy rollover of the vehicle.
[0005] (2) Overloading causes serious road damage and costs road maintenance costs
[0008] However, the installation of scales requires a large installation space due to the large scale of the facility, and the installation cost is high. Therefore, the number of scales that can be installed is limited, and it is physically impossible to measure a large number of vehicles.

Method used

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  • Vehicle weight measurement device
  • Vehicle weight measurement device
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ”

[0143] E.g Figure 7 As shown, this embodiment shows an example of applying the present invention to a suspension device (Suspension) 1 for a rear wheel of a trailing arm type automobile. In the trailing arm type, the cantilever (Suspension arm) 2 is at right angles to the centerline of the vehicle body (refer to the dashed line in the figure) from the suspension member 3 (a structural element of the suspension device 1) that is erected across the lower side of the vehicle. It is pivotally supported and can be moved in the vertical direction on the rear side (arrow side in the figure) of the suspension member 3.

[0144] A coil spring 5 is provided on the upper surface 2a of the cantilever 2 via the vehicle weight measuring device 100 of the present invention. In addition, the coil spring 5 is sandwiched between the cantilever 2 and the lower surface of the vehicle body.

[0145] In addition, Figure 7 The suspension device 1 shown is a structure of a well-known trailing arm suspe...

no. 2 approach ”

[0217] Figure 8 to Figure 10 The second embodiment of the present invention is shown.

[0218] This embodiment is an embodiment of the weight measuring device for a vehicle of the present invention to which a suspension device for front wheels is applied.

[0219] The vehicle weight measurement device of this embodiment includes: a top plate (sensor body) 7 whose upper surface side is attached to the vehicle body (vehicle) side and has an open groove portion 9c on the lower surface side; and a diaphragm 11 that covers the groove portion 9c The opening area 9d of the groove 9c together with the groove portion 9c forms an oil chamber 9 filled with a predetermined space for the measurement fluid R; the ring-shaped ferrule 35 is formed with a diameter larger than the outer diameter of the opening area 9d of the groove portion 9c, And the outer diameter surface of the diaphragm 11 is sandwiched between the ferrule 35 and the surface outside the opening area 9d of the groove 9c and seal...

no. 3 approach ”

[0279] Figure 11 to Figure 13 The third embodiment of the present invention is shown.

[0280] This embodiment is different from the relative rotation preventing structure 80 of the second embodiment. Other structures and effects are the same as in the second embodiment, so detailed descriptions are omitted. In addition, in Picture 11 Here, the bearing unit 50 is shown in a schematic diagram, but it may have the same structure as the second embodiment.

[0281] In the present embodiment, the relative rotation preventing structure 80 is composed of a notch 80 d provided in the retaining ring 49 and protrusions 80 e and 80 f provided in the first piston 43 and the second piston 44.

[0282] The notch portion 80d is recessed in a predetermined position on the inner peripheral surface of the retaining ring 49 in a radially outward direction and an arc shape in plan view and continuous and penetrating in the vertical direction (refer to Figure 11 to Figure 13 ).

[0283] The protrusion...

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Abstract

The present invention includes: a bottom plate (200) that contacts an arm of a suspension device; a piston (300) that is capable of pressing a diaphragm (230), which forms an oil chamber (201), the piston being on the upper-surface side of the bottom plate; and a pressure sensor (400) that detects the pressure of a measurement fluid R in the oil chamber, the pressure sensor being on the lower-surface side of the bottom plate. The bottom plate has a mechanism for stopping the rotation of the arm of the suspension device in the vicinity of the pressure sensor. A hanging rim part (504a) is formedon a flange part (302) of the piston. A gap is formed between the flange part and the bottom plate. The bottom plate is provided with a step part (207) aligned with the hanging rim part. A stopper ring (320) provided so as to cover the step part from the hanging rim part is provided. A projecting part (300a) of the piston that fits with a notch part (322) of the stopper ring, and a projection part (205b) that fits with the notch part so as to be capable of moving in the longitudinal direction and projects from the upper-surface side, are also provided.

Description

Technical field [0001] The present invention relates to a device for measuring the weight of a vehicle, and more particularly to a weight measuring device that is assembled in a suspension device of an automobile and detects an overloaded vehicle. Background technique [0002] In automobiles, especially commercial vehicles such as trucks and vans that transport various kinds of goods, illegal overloading on roads that exceeds the legal load becomes a social problem. This is because transporting a large amount of goods at one time can reduce transportation costs. [0003] However, such overloading may cause the following problems, which must be avoided. [0004] (1) Overloading may cause the car's sports performance to decrease and structural elements to be damaged, which may cause accidents. For example, there are many factors that cause accidents, such as broken axles (wheel hubs), broken tires (bursts), longer braking distances, overheated brakes that are difficult to function, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G19/10
CPCG01G19/10G01G5/06G01G19/028
Inventor 疋田真史松田靖之铃木荣作
Owner NSK LTD