JPH0449568Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a sitting comfort measuring device for measuring the sitting comfort of various seats such as vehicle seats, particularly the feeling of forward slippage.

(Conventional technology) Conventionally, the feeling of forward slippage, which is the feeling when the human body sits on a seat, was evaluated using sensory tests, so the evaluation of the forward slipping feeling was unclear, and the evaluation could not be accurately evaluated based on the structure of the seat. There was a problem in the design that we could not provide feedback on.

(Problem to be solved by the invention) As shown in Fig. 5, the feeling of forward slippage, which is one of the elements of seat comfort, is caused by the effect of the upper body around the seat pressure center a when the human body is seated on the seat S. This is caused by the difference in the rotational moment at the point of application of the body weight b and the center of gravity c of the buttocks, but this feeling of forward slipping is caused by the difference or presence or absence of the pressure sensation that the human body receives at the contact surface between the buttocks and the backrest S2. In order to ensure a comfortable seating feeling and sitting posture, it is necessary to reduce the feeling of forward slippage.

The purpose of the present invention is to provide a seat comfort measuring device that measures the pressure applied by the backrest of a human body model seated on the seat and quantifies the feeling of forward slippage based on this pressure value. It is.

(Means for Solving the Problems) The present invention connects a back model body simulating the back of a human body and a hip model body simulating the buttocks of the human body via a connecting member, and the back model body An appropriate number of weights are removably attached, while a fleshy layer that is formed to be elastically compressible and deformable to the surface layer of the hip model is attached near the rear side surface of the hip model by the backrest of the seat. The gist of this invention is a seat comfort measuring device in which a pressure sensor is embedded to measure the applied pressure value.

(Function) When evaluating the feeling of forward slippage of a seat, the device of the present invention uses a hip model that simulates the buttocks of a human body that is seated on the seat, and a weight equivalent to the body weight that is applied to a back model that simulates the back of the human body. In this state, the pressure value applied to the hip model by the backrest is measured by a pressure sensor embedded in the hip model as a substitute characteristic value for the feeling of forward slippage of the seat.

(Example) Next, an example of the present invention will be described with reference to the drawings.

In the sitting comfort measuring device K for measuring the sitting comfort of the seat S, the human body model 1 is a back model whose upper part is formed by simulating the surface shape of the back of a human body that comes into contact with the backrest S2 of the seat S. 2, and a hip model body 3 formed by simulating the buttocks of a human body seated on the cushion S1 of the seat S.
and a connecting bar 4 that connects the back model 2 and the hip model 3.

The back model body 2 is formed into a shell shape concave toward the rear, and a vertically elongated support member 5 fixed to the center of the inner surface has a support disposed at a location corresponding to the center of gravity of the upper body of the human body. A shaft 6 is inserted horizontally, and an appropriate number of disc-shaped weights 7 to 7 are removed from each side of the support shaft 6 to add a weight equivalent to the weight of a human body to the human body model 1. The weights 7 are attached so that they can be attached, and the weight of the human body model 1 can be adjusted to increase or decrease by increasing or decreasing the number of weights 7 attached.

The upper end of the connecting bar 4 is fixed to the support member 5, while the lower end of the connecting bar 4 is connected to a bracket 8 attached to the rear end of the upper surface of the hip model 3, and a pin 9 fitted into the bracket 8. It is pinned to the upper rear end of the hip model so that it can tilt in the front-back direction, and the relative angle between the back model 2 and the hip model 3 can be adjusted by tilting the connecting bar 4. can.

In the inner layer of the hip model body 3, a hard skeleton part 10 simulating the pelvis of a human body is formed of a hard synthetic resin material in an almost inverted mountain shape, and in the surface layer part of the hip model body 3, a human flesh part is formed. Soft fleshy layer 1 simulating
1 is made of a synthetic rubber material or the like so that it can be elastically compressed and deformed.

An appropriate number of pressure sensors 12 to 12 are located at a portion where the hip model 3 is in contact with the backrest S2 in order to measure the pressure applied by the backrest S2 to the hip model 3 seated on the seat S; That is, they are buried near the upper end of the rear surface of the fleshy layer 11 of the hip model 3 and arranged in the circumferential direction of the hip model 3. Each pressure sensor 12 is connected to an amplifier 14 connected to a recorder 13 via a lead wire 15. detected by the amplifier 14, respectively.
The signal is amplified and displayed on the recorder 13.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in the main body, a back model body 2 that simulates the back of a human body and a hip model body 3 that simulates the buttocks of a human body are connected to each other by pins attached to the hip model body 3 so as to be rotatable in the front and rear directions. A suitable number of weights 7 are connected to each other via a bar 4, and the back model body 2 is equipped with an appropriate number of weights 7 arranged at a position corresponding to the center of gravity of the upper body of the human body.
While the hip model body 3 is removably attached, pressure is applied to the hip model body 3 by the backrest S2 of the seat S near the rear side of the fleshy layer 11, which is formed to be elastically compressible and deformable against the surface layer of the hip model body 3. A suitable number of pressure sensors 12 arranged in the circumferential direction are embedded in order to measure the pressure values.

For this reason, when evaluating the feeling of forward slippage of the seat S, the pressure value applied to the rear side of the hip model body 3 with the human body model 1 seated on the seat S was measured using each pressure sensor 12. The feeling of forward slippage can be quantified based on the pressure value.

As shown in Fig. 4, the pressure value P applied by the backrest to the buttocks of a seated human body and the evaluation score M (1 to 5 points) of the feeling of forward slipping based on the sensory test.
If the score is 5 points, there is no feeling of slipping forward), there is a correlation shown by the sloped straight line in Figure 4, and as the pressure value P increases, the score of evaluation point M increases and the feeling of slipping forward decreases. Since this has already been determined, the feeling of anterior slipping can be quantified using the pressure value applied to the rear side of the hip model body 3 as a substitute characteristic value for the feeling of anterior slipping, and the feeling of anterior slipping can be accurately evaluated. With Uru,
When designing the seat structure, the results of measuring the feeling of slipping in the front can be accurately fed back, thereby contributing to the structural design of the seat that reduces the feeling of slipping in the front.

(Effect of the invention) That is, the present invention connects a back model body simulating the back of a human body and a hip model body simulating the buttocks of the human body via a connecting member, and the back model body includes an appropriate number of hips. A weight is removably attached, while a fleshy layer formed to be elastically compressible and deformable against the surface layer of the hip model is pressed against the hip model by the backrest of the seat near the rear side surface. By embedding a pressure sensor for measuring the pressure value, the feeling of forward slippage can be quantified and accurately evaluated, which has the effect of contributing to the structural design of the seat.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a side view showing how the sitting comfort measuring device is used, Figure 2 being a back view of the human body model, and Figure 3 being a back view. FIG. 4 is a perspective view of the model body, FIG. 4 is a graph showing the correlation between the pressure value and the evaluation score of the feeling of slipping forward, and FIG. 5 is a side view illustrating the feeling of slipping forward. 2... Back model body, 3... Hip model body, 4
... Connection bar, 7 ... Weight, 11 ... Fleshy layer, 12 ... Pressure sensor.

Claims (1)

[Scope of utility model registration request] A back model body that simulates the back of a human body and a hip model body that simulates the buttocks of a human body are connected via a connecting member, and an appropriate number of weights are removably attached to the back model body, while A pressure sensor for measuring the pressure applied to the hip model by the backrest of the seat is located near the rear side of the fleshy layer that is formed to be elastically compressible and deformable on the surface layer of the hip model. A seat comfort measuring device characterized by having a seat embedded in it.