JPH0428047Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a mannequin used for performance testing of vehicle seats.

(Prior art) As a conventional mannequin of this type, for example,
There is something like Figure 7 described in SAE, PAPER, 720006. FIG. 7 shows cross-sections of the upper body with the head omitted and the lower body with the lower legs omitted, and shows a frame 101 constituting the buttocks, a lumbar block 103 constituting the lumbar vertebrae, and a back constituting the back. block 105, each block 1
03 and 105 are connected via a spine joint 107 at each joint support portion 106.

Further, a spring 109 constituting a flexor/extensor muscle is provided at the tip of each joint support portion 106. Each of the spinal joints 107 is configured to be rotatable at its intermediate portion, and is positioned corresponding to the points on the human spinal column shown in FIG. It is now designed to simulate the human body.

(Problems to be Solved by the Invention) In this conventional structure, the characteristics of the spring 109 are uniquely determined by the setting at the time of assembly. However, the flexor and extensor muscles of the human body vary from person to person, and the spring 10
If the characteristics of 9 are uniquely determined, it will not be possible to deal with the problem. In addition, when a person sits on a seat and the center of gravity shifts in response to a change in posture, a spring 10 with a unique characteristic balances the forces of the flexor and extensor muscles at this time.
9 makes it difficult to create. Therefore,
In order to simulate a human body with a mannequin according to these differences, it is necessary to prepare multiple types of mannequins with different spring characteristics for each difference, which makes management extremely complicated and is extremely disadvantageous in terms of cost. Become something.

Therefore, the purpose of this invention is to provide a mannequin that can closely simulate the human body without having to prepare multiple types of mannequins, regardless of differences in the characteristics of flexor/extensor muscles between people.

(Means for Solving the Problems) In order to solve the above problems, this invention consists of a frame constituting the buttocks, a lumbar block constituting the lumbar region, a back block constituting the back region, and each of these blocks. The structure includes a spinal joint that connects the bones, a spring that constitutes a flexor-extensor muscle, and a weight that adapts to the human weight, and an adjustment means that adjusts the characteristics of the spring.

(Function) The characteristics of the springs constituting the flexor/extensor muscles can be adjusted by the adjustment means.

(Example) An embodiment of this invention will be described below.

FIG. 1 is a longitudinal sectional view of a mannequin according to an embodiment of the invention, and FIG. 2 is a perspective view thereof. This mannequin has a lower body 1 with the lower legs omitted and an upper body 3 with the head omitted.

The lower body 1 includes a frame 5 that constitutes the buttocks, and a thigh frame 7 that constitutes the thighs is integrally constructed with this frame 5.

The upper body 3 has a lumbar block 9 forming a lumbar region and a back block 11 forming a back region. Three lumbar blocks 9 of the same size are provided, and one back block 11 is provided which is larger than these lumbar blocks 9. Each lumbar block 9 has a front (first
A joint support part 13 protruding to the left in the figure is fixed, and a joint support part 15 is fixed to the back block 11. A spinal joint 17 is supported between these joint support parts 13 and 15, and each lumbar vertebra block 9 and back block 11 are connected.

These spine joints 17 are constructed as shown in FIGS. 3 and 4, and the joint support portion 13,
It is possible to move back and forth along 15. In other words, spine joint 17 is joint attupa 1.
9 and a joint lower 21, and a joint shaft 23 passing through the joint upper 19 and the joint lower 21 from side to side allows the two to be relatively rotatably connected. Double nuts 27 are fastened to the left and right sides of the joint shaft 23 via washers 25, and the joint shaft 2
No. 3 slip-off prevention is performed.

Further, a screw pin 29 is provided protruding from the joint upper 19 and the joint lower 21, a slide lock ring 30 is screwed onto the screw pin 29, and a joint slide 31 is integrally molded at the tip. On the other hand, the joint support parts 13 and 15 have slide guides 3
3 is formed, and the joint slide 31 is fitted therein. Therefore, the spine joint 17 is movable along the joint supports 13, 15, and the spine joint 17 can be positioned by fastening the slide lock ring 30 to the joint supports 13, 15.

Among the joint support parts 13, the lowermost one is attached to the hip point joint 3 on the frame 5.
They are connected via 4.

On the other hand, springs 35 constituting flexor/extensor muscles are attached to the tips of the joint support parts 13, 15. This spring 35 is composed of three compression springs 37 and two tension springs 39, and is balanced with the weight of the weight, which will be described later.

Each compression spring 37 is connected to each joint support portion 13,1.
5, and a spring receiving plate 41 is fixed to the end portion by welding as shown in FIG. A through hole 43 is formed in the center of the spring receiver 41, and nuts 45 and 47 concentric with the through hole 43 are fixed to the inner surface of the spring receiver 41 above and below the compression spring 37. These upper and lower nuts 45, 47 have opposite threads. In addition, the spring receivers 41 above and below the compression spring 37
Bolts 49 and 51 passing through through holes 43 are screwed into nuts 45 and 47, respectively. These upper and lower bolts 49, 51 also have opposite threads. A rectangular fitting flange 53 is integrally formed on the bolts 49 and 51, and this fitting flange 53 fits into a fitting recess 57 of a spring stay 55. The fitting recess 57 has an open front end surface (left end surface in FIG. 6), and the fitting flange 5
3 can be inserted from the direction of arrow A in FIG.

As shown in FIG. 6, the spring stay 55 is provided with connection pins 59 that protrude toward the joint support parts 13 and 15, and these connection pins 59 are inserted into connection holes 61 provided in the joint support parts 13 and 15. , are fixed by machine screws 63.
The spring receiver 41, nuts 45, 47, and bolts 49, 51 constitute adjusting means for adjusting the characteristics of the compression spring 37.

The tension springs 39 are arranged on both the left and right sides of the compression spring 37 and are supported by spring receiving pins 65 and 67 fixed to the uppermost spring stay 55 and the lowermost spring stay 55.

A weight support section 69 is further fixed to the back block 11, and a weight 73 is attached to this weight support section 69 via an arm 71. The weight of this weight 73 is determined so that the total weight of the mannequin in the fully assembled state matches the human weight.

Next, the operation of the above embodiment will be described.

First, the installation and removal of the compression spring 37 will be described. The compression spring 37 is connected to the spring receiver 41 and the nut 4.
5 and 47 are integrated. Therefore, first, the bolt 49 is screwed into the upper nut 45 of the compression spring 37, and the bolt 51 is screwed into the lower nut 47, respectively. And bolt 4
The fitting flanges 53 of 9 and 51 are slid from the end of the spring stay 55 in the direction of arrow A in FIG. 6 to fit into the fitting recess 57. If this is done for all compression springs 37, each compression spring 37
and each spring stay 55 are in a sub-assembled state. Then, connect the connecting pin 59 of each spring stay 55 to the joint support part 13,1.
The compression spring 37 is assembled by inserting it into the connection hole 61 of No. 5 and fixing it with the machine screw 63. The compression spring 37 can be removed by performing the above operation in reverse. In this way, the installation of the compression spring 37,
Removal can be performed as an assembly to the joint support parts 13, 15, making it extremely easy. Therefore, it is extremely advantageous for repairing, replacing, adjusting, etc. the compression spring 37. Next, the tension spring 39 is hooked onto the spring receiving pins 65, 67 of the spring stay 55, and the assembly of the spring 35 is completed.

Next, adjustment of the characteristics of the compression spring 37 will be described.
First, the compression spring 37 itself is rotated to the right or left while the compression spring 37 remains assembled as shown in FIG. In this case bolts 49, 51
The fitting flange 53 is rectangular and is fitted into the fitting recess 57 of the spring stay 55, so the bolts 49, 51 themselves do not rotate.
Since the nuts 45, 47 and bolts 49, 51 above and below the compression spring 37 have reverse threads,
For example, if you rotate it to the right, the upper and lower spring receivers 4
The characteristics of the compression springs 37 are adjusted in such a way that the springs 1 approach each other and move away when rotated to the left.
Therefore, the characteristics of the compression spring 37 can be adjusted very easily depending on the differences in the various flexor/extensor muscles of each person. Furthermore, when simulating a human body shifting its center of gravity in response to changes in sitting posture, by adjusting the compression spring 37, the mannequin can be moved while adjusting the balance of forces like the muscles of the human body. . In addition, since differences in the characteristics of the flexor/extensor muscles of various people can be addressed by adjusting the compression spring 37 in its assembled state, there is no need to prepare multiple types of mannequins for each difference, making management extremely easy. At the same time, it becomes extremely advantageous in terms of cost.

In addition, when moving the spine joint 17,
First, the slide lock ring 30 is turned to unfasten it from the joint supports 13 and 15. Then the joint slide 31 moves to the slide guide 33.
Free movement within. Then, the spine joint 17 is moved back and forth (in the direction of the arrow in FIGS. 1 and 4) along the joint supports 13 and 15, and the slide lock ring 30 is fastened again at a predetermined movement position. In this position, the spinal joint 17 is locked from moving back and forth along the joint supports 13, 15, and is thus positioned.

In this way, by moving and positioning each spinal joint 17 to an arbitrary position, it is possible to match each spinal joint 17 to the point shown in Fig. 6, and also to compensate for differences in skeletal structure and posture between people. Even if there is a difference in the points, etc. due to differences in the degree of curvature of the spine due to the movement of the human center of gravity in response to changes, the spine joint 17 can be adjusted according to this difference, and the spine joint 17 can be adjusted to closely simulate the human body, regardless of the above-mentioned differences. Become a mannequin. Therefore, performance tests of vehicle seats and the like can be conducted appropriately.

Further, since the above-mentioned differences are dealt with by adjusting the spine joint 17, there is no need to prepare multiple types of mannequins for each difference, which makes management extremely simple and is advantageous in terms of cost.

Furthermore, if each joint 17 no longer operates smoothly due to repeated use, it can be easily replaced by loosening the slide lock ring 30, moving each joint 17, and removing it from the distal end side of the joint supports 13 and 15. can be done.

It goes without saying that the mannequin set as described above can be rotated back and forth at each joint 17.

This invention is not limited to the above embodiments. For example, if the compression spring 37 is a nonlinear spring, a large change in characteristics can be obtained with a slight adjustment.

(Effects) As is clear from the above, according to the configuration of this invention, the characteristics of the spring can be adjusted extremely easily using the adjustment means, regardless of the various changes in the characteristics of the flexor and extensor muscles of each person. It can be well simulated on the human body. In addition, by adjusting the characteristics of the springs, it is possible to move the mannequin while adjusting the balance of forces similar to the muscles of the human body.
This can effectively simulate situations where the center of gravity shifts in response to changes in the sitting posture of the human body. Furthermore, since the spring characteristics are adjusted by the adjustment means, there is no need to prepare multiple types of mannequins, which makes management extremely simple and extremely advantageous in terms of cost.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a mannequin according to an embodiment of this invention, Fig. 2 is a perspective view thereof, Fig. 3 is an enlarged front view of the spinal joint, Fig. 4 is a side view of the same, and Fig. 5 is an essential part. FIG. 6 is a partially omitted plan view of the same part; FIG. 7 is a vertical cross-sectional view of a conventional mannequin;
FIG. 8 is a skeleton diagram of the human body. 5... Frame, 9... Lumbar block, 11...
...back block, 17...spine joint, {3
5... Spring, 41... Spring receiver, 45, 47...
...Nut, 49, 51...Bolt} Adjustment means.

Claims (1)

[Scope of utility model registration request] A frame that makes up the buttocks, a lumbar block that makes up the lumbar vertebrae, a back block that makes up the back, a spinal joint that connects these blocks, a spring that makes up the flexor/extensor muscles, and a weight that adapts to the human weight. A mannequin comprising: an adjustment means for adjusting the characteristics of the spring.