Road simulation apparatus of vehicle

[Detailed Description of the Invention]

(Field of the Invention) The present invention relates to the load simulator device of vehicles. (Conventional technology) Generally as for vehicles, such as a car, various kinds of system performance testing is done on the occasion of the quality assessment after the completion of manufacture, etc. on the occasion of the development. In the oscillating degree-of-comfort examination which carries out measurement evaluation of whether a comfortable degree of comfort is maintainable also especially in it corresponding to displacement of a real road surface, It has the method of Running(ing) the test course in which various kinds of road surface forms were formed, real, and carrying out measurement evaluation, and an artificial excitation means, and there are the two methods of the load method of simulation which forms Excited state according to the form part of the real road surface to vehicles by the excitation means, and carries out measurement evaluation. It is impossible in addition to the equipment itself becoming far large-scale in the case of the former, for there to be a limit also in road surface formation of the form corresponding to a real road surface in practice, and to form not much complicated Excited state. Measurement conditions change with change of external conditions, such as existence of a side wind, easily. On the other hand, in the case of the latter, while measurement conditions are made by the ability to always keep it constant, fairly complicated Excited state can also be formed comparatively freely, and measurement also has in it an advantage which is not in the former in respect of it being easy and being etc. And a load simulator device which is described in JP,57-111433,A was conventionally used for this load method of simulation. namely, this conventional load simulator device -- the axle of vehicles -- the up-and-down direction -- To vibrate -- it supports by an excitation means, and it is constituted so that only Excited state of the up-and-down direction concerned may be formed and the oscillating damping function of vehicles may be measured. Tow corresponding to real Running condition which (the problem which an invention tends to solve), and time are simply formed only for vibration of the axle up-and-down direction with the composition of the above-mentioned conventional technology, but vibration of the direction of vehicles order compounds, and acts -- there is a problem which cannot realize a coarse oscillating state. Vibration of the vehicles up-and-down direction where the weight of vehicle itself is loaded via the tire which is an elastic body in fact also has the problem referred to as that it will not mean having carried out the simulation of the real Running condition correctly if Excited state originally is not formed via the tire concerned. (Means for solving a problem) In the present invention, it was made for the purpose of solving the above-mentioned problem. therefore, a base part which supports a tire, a sandwiching part which faces across axle order, and the above-mentioned base part -- the up-and-down direction -- To vibrate -- the 1st excitation means and above-mentioned sandwiching part -- the direction of order -- To vibrate -- it has the 2nd excitation means. (OPERATION) According to the above-mentioned means, the vertical vibration by the 1st excitation means is told to vehicles via the tire laid on the base part. Vibration of a direction before and after basing on the 2nd excitation means is transmitted to an axle via a sandwiching part, and adds vibration of the direction of order to vehicles. If the 1st excitation means and 2nd excitation means are operated simultaneously, vibration of the direction of slant where vibration of the up-and-down direction and vibration of the direction of order were compounded will be transmitted to vehicles. (EXAMPLE) Drawing 1 shows the load simulator device of the vehicles concerning the 1st example of the present invention. First, in Drawing 1, numerals l are vehicles (car) which are the targets of oscillating measurement, and where axle (spindle) 2 is made to project to the method of the outside of predetermined length, wheel 3 is attached to the vehicles l. And the above-mentioned vehicles l are laid on the load simulator device described below via the tire 5. the above-mentioned load simulator device -- each wheel 3.3 of the above-mentioned vehicles 1 -- being provided corresponding to .. (However, only the thing of a one side front wheel is shown, others omit and Drawing 1 shows them), and each wheel 3 and 3 concerned .. Base part IO which supports tire 5, the base part 10 -- the up-and-down direction -- To vibrate -- the 1st excitation means 11, sandwiching part 12 of the shape of U which pinches axle 2 projected to the method of the outside of predetermined length of the above-mentioned axle 3 in the direction of vehicles order, and the sandwiching part 12 -- the direction of vehicles order -- To vibrate -- it comprises 2nd excitation means 13. The above-mentioned base part lO is constituted by the tabular member of sufficient rectangle to lay the above-mentioned tire 5, for example, and the central part undersurface is supported in the up-and-down direction with piston rod 16 of the 1st cylinder 15 that constitutes the 1st excitation means 11 of the above, enabling free rise and fall. therefore -- the above-mentioned base part 10 passes the piston rod 16 by the operation of the 1st cylinder 15 of the above -- it is rise and fall at arbitrary cycles and amplitude up and down -- Excited -- having . On the other hand, the above-mentioned sandwiching part I2 consists of U-like lever 17 which carried out the opening to the upper part side, connects in one a pair of arm members 18.18 prolonged in the direction of vehicles order in a lateral part in the meantime, carries out connecting support of the arm member 18.18 on the above-mentioned base part lO via support 19.19 respectively, and is constituted. And the height of the above-mentioned support 19.19 is determined in consideration of [ that the above-mentioned axle 2 will be in the state where it fitted into the up-and-down direction abbreviation intermediate part of the interior space of upper gEU-like lever 17, in the support state concerned ] the outside of the above-mentioned wheel 3. The 2nd excitation means 13, While pivoting corner part 21a of angle-like link piece 21 in the upper end of bearing bracket 20 which estranged for a prescribed distance and was installed in the vehicles front side from the 1st excitation means 11 of the above so that rotation is possible While pivoting one end (rocking end) 21b of the link piece 21 concerned in one side arm member 18 which constitutes the above-mentioned sandwiching part 12 via lever 22, other end (operation end) 21c is pivoted at the tip of piston rod 26 of the 2nd cylinder 25 that operates in the up-and-down direction, and it is constituted. Therefore, when the 2nd cylinder 25 of the above carries out an elastic operation, the above-mentioned link piece 21 will rotate by turns in arrow a and the direction of b via the piston rod 26, and U-like lever 17 of the above-mentioned sandwiching part 12 will be further Oscillating oscillation(ed) in the direction of vehicles order via the above-mentioned lever 22 by the rotation. According to the above composition, it adds to the 1st excitation means 10 that is the vehicles up-and-down direction and that Exciting performs, Since the 2nd excitation means 13 that is the direction of vehicles order and that Exciting performs is established, the formation of each Excitation state of the vehicles upper and lower sides and the direction of order can also form easily the fairly complicated oscillating state which vibration of these both directions compounded of course, and it can make it approximate it by real Running condition. And Excitation force of the above-mentioned vehicles up-and-down direction is added to tire 5 the very thing via base part lO which supported tire 5, and is transmitted to the body via the tire concerned. Because the addition of vibration of the direction of vehicles order to the above-mentioned axle 2 is made on the other hand via sandwiching part 12 which consists of U-like lever 17 which pinches the axle 2 concerned only in the direction of order, The movement in the up-and-down direction of the tire 5 above [ itself ] can also reproduce freely a case as the above-mentioned tire 5 rebounded by rapid vibration of the above-mentioned vehicles up-and-down direction freely after all, without carrying out an equivalent restraint. Therefore, the degree of approximation to real Running condition becomes still higher. Sandwiching part 12 which pinches the above-mentioned axle 2 in the direction of vehicles order, As shown in Drawing 2 not as the thing limited only to only when using the above-mentioned U-like lever 17 but as the 2nd example, H-like member 17' constitutes, While forming engaging-of-clutch space A of axle 2 which makes thin thickness of central part neighborhood 17a' of the H-like member 17', and is prolonged in the up-and-down direction inside, it may be made to prevent at least side to the cross direction of wheel 2 by above-mentioned central part neighborhood 17a'. (EFFECT OF THE INVENTION) the base part which supports a tire as the present invention was explained above, the sandwiching part which faces across axle order, and the above-mentioned base part -- the up-and-down direction -- To vibrate -- the 1st excitation means and above-mentioned sandwiching part -- the direction of order -- To vibrate -- it had the 2nd excitation means Therefore, according to the present invention, it adds to the excitation means of the vehicles up-and-down direction, Since the excitation means of the direction of vehicles order is established, the formation of each Excitation state of the vehicles upper and lower sides and the direction of order can also form easily the fairly complicated oscillating state which vibration of these both directions compounded of course, and it can make it approximate it by real Running condition. And Excitation force of the above-mentioned vehicles up-and-down direction is added to the tire itself via a base part which supported a tire, and is transmitted to the body via the tire concerned. Because the addition of vibration of the direction of vehicles order to the above-mentioned axle is made on the other hand via the sandwiching part which pinches the axle concerned only in the direction of order, After all, movement in the up-and-down direction of the above-mentioned tire itself is free, and can also reproduce freely a case as a tire rebounded by vibration of the above-mentioned vehicles up-and-down direction. Therefore, the degree of approximation to real Running condition becomes still higher.

[Brief Description of the Drawings]

The perspective view showing the composition of the load simulator device of the vehicles which require Drawing 1 for the 1st example of the present invention, and Drawing 2 are perspective views showing the structure of the sandwiching part of the load simulator device of the vehicles concerning the 2nd example of the present invention. ! ..... Vehicles 2 ..... Axle 3 ..... Wheel 10 .... Base part 11 .... The 1st excitation means 12 .... Sandwiching part 13 .... The 2nd excitation means