JPH0741445U - Seat lateral load bearing performance tester - Google Patents

Abstract

(57) [Summary] [Purpose] To enable accurate measurement of the amount of movement / load characteristics without extra resistance other than the seat back acting on the movement of the back type. [Structure] A support 15 is attached to a back mold 17 that imitates the back of a human body, and the support 17 can be rotated in the front-rear direction around the support shaft 12 on both side pedestals 11 and 11 via the bracket 13 and the support shaft 12. In addition, the support shaft 16 is attached so as to be rotatable in the left-right direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lateral load supporting performance testing device for testing the supporting performance of a seat back against lateral loads in various seats including automobile seats.

[0002]

[Prior art]

 In the past, in many cases, a sensory test was conducted by humans as a means for testing and evaluating the seat back support performance against lateral load (horizontal load), but there are individual differences in the sensation and physical constitution of the subject. Therefore, it was difficult to obtain quantitative and accurate test results.

On the other hand, it is possible to consider a method in which a known human body model used for various performance tests is seated and the upper half of the body is laterally loaded to test the support performance of the seat back.

Explaining this with reference to FIGS. 8 and 9, a human body model 1 includes a hip mold 2 that imitates the buttocks of a human body, a back mold 3 that imitates the back, and a connecting bar 4 that connects these molds 2 and 3. The hip pattern 2 is arranged on the seat cushion S1, and the back pattern 3 is arranged on the seat back S2.

In this state, the connecting bar 4 is laterally pulled (or pushed) by a drive device (not shown), and the back mold 3 is pressed against the side edge portion of the seat cushion S2. The amount of movement and the load are measured. 6 is a displacement meter for detecting the movement amount of the back mold 3.

The connecting bar 4 is rotatably connected to the buttock 2 in the front-rear direction about the left-right axis 5, and the rotative movement causes the back mold 3 to move along the surface of the seat back S2. You can do it.

[0007]

[Problems to be solved by the device]

 However, according to this configuration, since the back mold 2 and the back mold 3 perform an integrated motion with respect to the lateral load (the back mold 3 does not move in the left-right direction independently), the back mold as shown by the phantom line in FIG. The model 1 as a whole tilts due to the load applied to 3, and the reaction force from the seat cushion S1 acts on the bottom die 2 as shown by the arrow in FIG.

For this reason, this reaction force becomes a movement resistance of the back mold 3, and an accurate movement amount / load characteristic cannot be measured. Therefore, there is a drawback that it is difficult to make an accurate evaluation.

Therefore, the present invention provides a lateral load supporting performance test device for a seat, which is capable of accurately measuring the amount of movement / load characteristics without an extra resistance other than the seat back acting on the movement of the back type. It is provided.

[0010]

[Means for Solving the Problems]

 According to the first aspect of the present invention, the pillar is attached to the back type arranged in the seat back, and the pillar is rotatable with respect to the pillar support body in the left-right direction about the longitudinal axis and the left-right axis. It is rotatably supported in the front-rear direction around the center.

According to a second aspect of the present invention, in the structure of the first aspect, the center of rotation of the support column in the left-right direction is set at substantially the same height position as the lumbar spine in the sitting posture of the human body.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the back mold is attached to the column so as to be rotatable in the front-rear direction about the left-right direction axis.

According to a fourth aspect of the present invention, in the structure according to any one of the first to third aspects, the back mold is attached to the column so as to be rotatable in the left-right direction about the longitudinal axis.

[0014]

[Advantageous Effects] According to the above configuration, since only the back mold rotates in the left-right direction and there is nothing other than the seat back that acts as a movement resistance of the back mold, the movement amount / load characteristic is accurately measured. Therefore, a proper evaluation can be made regarding the lateral load bearing performance of the seat.

Further, according to the configuration of claim 2, since the back type rotates in the left-right direction about the same position as the lumbar spine, which is the lateral fulcrum of the human body, that is, the back type rotational movement is performed. Since the movement is similar to the lateral movement of the human body, it is possible to measure the amount of movement / load characteristics according to actual use of the seat.

On the other hand, according to the third aspect of the invention, the back mold fits to the surface of the seat back by the pivotal action of the column in the front-rear direction, and moves closer to the back of a person.

Further, according to the structure of claim 4, the back mold is translated in the left and right directions by the combination of the left and right pivoting action of the column with respect to the column support and the left and right pivot action of the back mold with respect to the column. Therefore, the movement of the back is closer to the movement of the spine of the human body.

In particular, according to the combination with the configuration of claim 3, more accurate test results can be obtained by the fine movement in which the back mold tilts back and forth while moving in parallel to the left and right.

[0019]

【Example】

 An embodiment of the present invention will be described with reference to FIGS.

First Embodiment (see FIGS. 1 to 3) Reference numerals 11 and 11 are a pair of left and right pedestals as pillar supports, and a horizontal spindle 12 is mounted between the pedestals 11 and 11. A cylindrical bracket 13 is attached to approximately the center of 12 so as to be rotatable in the front-rear direction (direction of arrow A) about the support shaft 12.

Further, the bracket 13 is provided with a strut mounting portion 14 facing upward, and the lower end portion of the strut 15 is attached to the strut mounting portion 14 by a strut mounting shaft 16 in the front-rear direction around the coaxial 16 in the left-right direction (arrow arrow). Direction).

A back mold 17 formed imitating the back of the human body is attached to the column 15 so as to be integrally movable.

When using this test apparatus, as shown in FIGS. 1 and 2, the support shaft 12 crosses over the seat cushion S1 and the center of the back mold 17 is the center line of the seat back S2 when viewed from the front. Both pedestals 11 and 11 are placed on both sides of the seat cushion S1 in a state of overlapping X (torso reference line, shown in FIG. 1), and the back mold 17 is brought into contact with the surface of the seat back S2.

Here, in this device, the support shaft 12, which is the center of rotation of the back mold 17 in the front-rear direction, is almost the rear fulcrum fulcrum (so-called hip point) in the seated posture of the human body in the seat to be inspected. At the same height position, the column mounting shaft 16 that is the center of rotation of the back mold 17 in the left-right direction is located at substantially the same position as the lumbar spine, which is the lateral fulcrum of the spinal column. The position is set.

In this state, a lateral load is applied to the back mold 17 via the support column 15 to move the back mold 17 to one side along the surface of the seat back S2, and the movement amount of the back mold 17 The relationship with the load received by the seat back S2 due to the movement of the back mold 17 is measured.

In FIG. 2, as an example of this measuring means, the column 15 is laterally pulled by the hydraulic cylinder 18, the back movement amount at that time is measured by the displacement meter 19, and the seat back load is measured by a load cell or the like. The configuration is shown in which the sensor 20 measures and the measured movement amount and load are displayed and recorded on the recorder 21.

Further, FIG. 3 shows the relationship between the back movement amount D obtained by the test by this apparatus and the load F received by the seat back S2, and the curve A shows that the rise of the load with respect to the back movement amount becomes large. Good lateral load bearing characteristics and curve B show poor lateral load bearing characteristics with a blunt load rise.

According to this test apparatus, only the back mold 17 corresponding to the back of the human body moves in the left-right direction, and the extra resistance other than the seat back S2 (the hip shape of the human body model 1 in the conventional device shown in FIGS. 2 and the resistance of the seat cushion S1) do not act at all, so that the movement amount / load characteristic can be accurately measured. Therefore, it is possible to properly evaluate the lateral load supporting performance of the seat.

Further, during the test, the back mold 17 is rotated about the same position as the lumbar spine, which is the lateral fulcrum of the human body (the column mounting shaft 16), and the rotation motion of the back mold 17 in the front-back direction is The movement of the back mold 17 becomes close to the movement of the human body by being performed around the same position (the support shaft 12) as the hip point, which is the front and rear fulcrum of the human body.

Therefore, it is possible to measure the movement amount / load characteristic according to the actual use of the seat.

Second Embodiment (Refer to FIG. 4) Explaining only the differences from the first embodiment, in the second embodiment, the weight mounting shaft 22 is provided on the column 15 so as to project toward both left and right sides (one side). (Only shown), the weights 23 are removably attached to the weight mounting shaft 22.

According to this structure, the weight of the back mold 17 can be variously adjusted by attaching the weight 23 or by increasing or decreasing the weight 23 according to the weight of the human body to be tested.

Alternatively, as another embodiment, instead of the weight 23, a spring whose spring force can be adjusted may be used to apply a backward load (a direction pressing the seat back S2) to the back mold 17. .

Third Embodiment (see FIGS. 5 to 7) In the third embodiment, the back mold 17 is rotatable with respect to the support column 15 in the left-right direction about the longitudinal axis 24 and in the left-right direction. It is attached so as to be rotatable back and forth around the shaft 25.

More specifically, a pair of brackets 26, 26 is provided on the front surface of the back mold 17, and a U-shaped connector 27 is attached to the brackets 26, 26 so as to be rotatable about the horizontal axis 25. ing.

A front-rear direction shaft 24 is provided on the connector 27 so as to project forward, and the shaft 24 is attached to the support column 15 so as to be rotatable around its axis.

According to this configuration, the back mold 17 performs a tilting motion in the front-rear direction shown by the arrow in FIG. 6 corresponding to the surface shape of the seat back S1, and the back mold 17 moves closer to the human back. It will fit on the surface of the seat back S1.

Further, as shown in FIG. 7, the left and right rotational movements of the column 15 around the column mounting shaft 16 are combined with the left and right rotational movements of the back mold 17 around the front-rear direction axis 24 to form a back mold. Since 17 is translated in the left-right direction, the movement of the back mold 17 is closer to the movement of the spine of the human body.

Further, in combination with the above-mentioned back-and-forth tilting movement, the back mold 17 makes a fine movement of tilting back and forth while moving in parallel to the left and right, whereby a more accurate test result can be obtained.

[0040]

[Effect of device]

 As described above, according to the present invention, the column is attached to a back model imitating the back of the human body, and the column can be rotated in the front-rear direction about the left-right axis with respect to the column support, and in the front-rear direction. Since the test device was configured so that it could be rotated in the left-right direction about the axis, only the back model moved in the left-right direction during the test, except for the back model of the human body model in the conventional device and seat backs such as seat cushions. There is no extra resistance to movement.

Therefore, since the movement amount / load characteristic can be accurately measured, it is possible to appropriately evaluate the lateral load supporting performance of the seat.

Further, according to the invention of claim 2, in addition to the above basic effects, since the back type pivots in the left-right direction about the same position as the lumbar spine, which is the lateral fulcrum of the human body, Since the back movement of the back is similar to the lateral movement of the human body, it is possible to measure the amount of movement / load characteristics that suits the actual use of the seat.

On the other hand, according to the third aspect of the invention, the back mold fits to the surface of the seat back by the pivotal action of the column in the front-back direction, and moves closer to the back of a person.

Further, according to the invention of claim 4, the back mold is moved in parallel in the left-right direction by the combination of the lateral rotation action of the column with respect to the column support and the lateral rotation action of the spine with respect to the column. Therefore, the movement of the back is closer to the movement of the spine of the human body.

In particular, according to the combination with the configuration of claim 3, more accurate test results can be obtained by the fine movement in which the back mold tilts back and forth while moving in parallel to the left and right.

[Brief description of drawings]

FIG. 1 is a perspective view of a test apparatus according to a first embodiment of the present invention.

FIG. 2 is a front view showing a test state of the apparatus.

FIG. 3 is a diagram showing a movement amount / load characteristic by the device.

FIG. 4 is a perspective view of a test apparatus according to a second embodiment of the present invention.

FIG. 5 is a partial perspective view of a test apparatus according to a third embodiment of the present invention.

FIG. 6 is a side sectional view of the device.

FIG. 7 is a partial front view of the same device.

FIG. 8 is a front view for explaining a conventional technique and its problems.

FIG. 9 is a plan view of the same.

[Explanation of symbols]

S1 Seat cushion S2 Seat back 11, 11 Stand as a support for pillar 12 Support shaft (horizontal axis which is the center of rotation in the front-rear direction) 13 Bracket for mounting the pillar 14 Support mounting portion of the bracket 15 Support 16 Supporting shaft ( Front-rear direction axis that is the center of rotation in the left-right direction) 17 Back mold 24 Shaft for rotating the back mold in the left-right direction with respect to the column 25 Shaft for rotating the back mold in the front-rear direction with respect to the column

Claims (4)

[Scope of utility model registration request] 1. A support pillar is attached to a back mold arranged in a seat back, and the support pillar is rotatable with respect to the support pillar in left and right directions about a longitudinal axis and about a horizontal axis. A lateral load supporting performance test device for a seat, which is supported so as to be rotatable in the front-rear direction. 2. The lateral load-bearing performance testing device for a seat according to claim 1, wherein the center of rotation of the column in the left-right direction is set at substantially the same height as the lumbar vertebra in the sitting posture of the human body. . 3. The lateral load supporting performance test device for a seat according to claim 1, wherein the back mold is attached to the support column so as to be rotatable in the front-rear direction about the horizontal axis. 4. The lateral load supporting performance of a seat according to claim 1, wherein the back mold is attached to the column so as to be rotatable in the left-right direction about the longitudinal axis. Test equipment.