Torque measuring device for a dummy torso

Abstract

The application discloses a dummy torso torque measuring device, which comprises a main body frame, a servo motor arranged above the main body frame, a speed reduction mechanism device connected with the servo motor, a torque sensor arranged at the bottom end of the speed reduction mechanism device, a reset shaft coupling arranged at the bottom end of the torque sensor and connected with the top end of the main body frame, an angle sensor arranged below the servo motor at the top end of the main body frame, a dummy torso arranged in the main body frame, a clamping mechanism arranged at the outer top part of the dummy torso, a positioning mechanism arranged at the outer bottom part of the dummy torso, and a mounting mechanism connected with the bottom end of the dummy torso. The design has the advantages that the dummy torso has the self-resetting function, the distance between the reset shaft coupling can generate the function of the automatic reset torque of the dummy torso under the state of no external force, the convenience of the torsion measurement of the dummy torso is improved, and the measurement efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of dummy torso torque measurement, and more specifically, to a dummy torso torque measuring device. Background Technology

[0002] In the automotive field, the testing and exploration of vehicle safety performance is an ongoing process. For the safety of personnel during experiments, both domestically and internationally, automotive crash models—specifically, crash dummies—are used as testing tools to obtain results and analyze vehicle safety performance. However, current methods for securing dummies are cumbersome and inconvenient, and the measurement accuracy for dummy torso twisting is low and the measurement efficiency is slow, thus affecting the work progress.

[0003] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0004] In view of the problems in related technologies, the present invention proposes a dummy torso torque measuring device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by the present invention is as follows:

[0006] A dummy torso torque measuring device includes a main frame, a servo motor mounted on top of the main frame, the servo motor being connected to a reduction mechanism, a torque sensor mounted at the bottom of the reduction mechanism, a reset coupling connected to the top of the main frame at the bottom of the torque sensor, an angle sensor located below the servo motor at the top of the main frame, a dummy torso inside the main frame, a clamping mechanism at the top of the dummy torso, a positioning mechanism at the bottom of the dummy torso, and a mounting mechanism at the bottom of the dummy torso.

[0007] Preferably, the side of the deceleration mechanism away from the servo motor is connected to the top of the main frame via a fixed column, and the reset coupling is located between the angle sensor and the fixed column.

[0008] Preferably, the bottom end of the main frame is provided with a base plate that is perpendicular to the main frame.

[0009] Preferably, the clamping mechanism includes a torso clamping fixing plate one and a torso clamping fixing plate two symmetrically arranged on both sides of the inner wall of the main frame. The torso clamping fixing plate one and the torso clamping fixing plate two are connected on one side by a torso clamping connecting plate, and the top ends of the torso clamping fixing plate one and the torso clamping fixing plate two are connected by a top plate connected to the output shaft of the reset coupling. The torso clamping fixing plate one is provided with a torso clamping positioning block on the side near the dummy torso.

[0010] Preferably, the positioning mechanism includes buttock tube positioning plates symmetrically arranged on both sides of the dummy's torso, and each buttock tube positioning plate is provided with a buttock tube limiter on the side closest to the dummy's torso, and each buttock tube limiter is connected to the buttock tube positioning plate through a buttock tube positioning bushing.

[0011] Preferably, the mounting mechanism includes a torso mounting plate disposed at the bottom end of the dummy's torso, and the torso mounting plate is movably connected to a torso mounting track located at the top of the base plate and symmetrically arranged.

[0012] The beneficial effects of this invention are as follows: This design, through the self-resetting function of the dummy torso, and further through the spacing of the reset coupling, generates the function of automatically returning the dummy torso to torque in the absence of external force, which improves the convenience of torsion measurement of the dummy torso and speeds up the measurement efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a dummy torso torque measuring device according to an embodiment of the present invention.

[0015] In the picture:

[0016] 1. Main frame; 2. Servo motor; 3. Reduction mechanism; 4. Torque sensor; 5. Reset coupling; 6. Angle sensor; 7. Dummy torso; 8. Torso clamping and fixing plate one; 9. Torso clamping and fixing plate two; 10. Torso clamping connecting plate; 11. Torso clamping positioning block; 12. Hip tube positioning plate; 13. Hip tube positioning bushing; 14. Hip tube limiter; 15. Torso mounting bracket; 16. Torso mounting track. Detailed Implementation

[0017] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0018] According to an embodiment of the present invention, a dummy torso torque measuring device is provided.

[0019] Example 1:

[0020] like Figure 1 As shown, the torque measuring device for a dummy torso in a car seatbelt test according to an embodiment of the present invention includes a main frame 1, a servo motor 2 on the upper part of the main frame 1, the servo motor 2 being connected to a reduction mechanism 3, a torque sensor 4 at the bottom end of the reduction mechanism 3, a reset coupling 5 connected to the top end of the main frame 1 at the bottom end of the torque sensor 4, an angle sensor 6 located below the servo motor 2 at the top end of the main frame 1, a dummy torso 7 inside the main frame 1, a clamping mechanism at the top outer part of the dummy torso 7, a positioning mechanism at the bottom outer part of the dummy torso 7, and a mounting mechanism at the bottom end of the dummy torso 7.

[0021] The specific function of the reset coupling 5 will be explained below.

[0022] like Figure 1 The reset coupling 5 has a fixed spacing between the upper and lower key teeth to meet the angle difference when the dummy torso 7 rotates to the maximum angle and returns to the initial position. This ensures that the process of the dummy torso 7 returning to the initial position is consistent with the actual dynamic test. It is a self-resetting torsional reset torque state of the dummy torso 7, and is not affected by the torsional torque value generated by the servo motor 2 torturing to the initial position.

[0023] Example 2:

[0024] like Figure 1 As shown, the deceleration mechanism 3 is connected to the top of the main frame 1 via a fixed column on the side away from the servo motor 2, and the reset coupling 5 is located between the angle sensor 6 and the fixed column.

[0025] like Figure 1 As shown, the bottom end of the main frame 1 is provided with a base plate that is perpendicular to the main frame 1.

[0026] like Figure 1As shown, the clamping mechanism includes a torso clamping fixing plate 1 8 and a torso clamping fixing plate 2 9 symmetrically arranged on both sides of the inner wall of the main frame 1. The torso clamping fixing plate 1 8 and the torso clamping fixing plate 2 9 are connected on one side by a torso clamping connecting plate 10. The top ends of the torso clamping fixing plate 1 8 and the torso clamping fixing plate 2 9 are connected by a top plate connected to the output shaft of the reset coupling 5. The torso clamping fixing plate 1 8 is provided with a torso clamping positioning block 11 on the side near the dummy torso 7.

[0027] like Figure 1 As shown, the positioning mechanism includes buttock tube positioning plates 12 arranged symmetrically on both sides of the dummy torso 7. Each buttock tube positioning plate 12 is provided with a buttock tube limiter 14 on the side of the buttock tube positioning plate 12 closest to the dummy torso 7. Each buttock tube limiter 14 is connected to the buttock tube positioning plate 12 through a buttock tube positioning bushing 13.

[0028] like Figure 1 As shown, the mounting mechanism includes a torso mounting plate 15 disposed at the bottom end of the dummy torso 7, and the torso mounting plate 15 is movably connected to a torso mounting track 16 located at the top of the base plate and symmetrically arranged.

[0029] To facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process will be described in detail below.

[0030] In practical applications, the torque measuring device controls the servo motor 2 through the host computer software program to twist the dummy torso 7 at a set angle and a set torsional speed, thereby obtaining the torsional angle and torsional torque values.

[0031] Steps: The dummy torso 7 rotates clockwise from its initial position to the maximum set angle and stops; then the servo motor 2 reverses at the set speed, and the dummy torso 7 self-resets, causing the reset coupling 5 to reset to its initial state without the torsional force of the servo motor 2; then the servo motor 2 reverses to the set maximum angle and stops; then the servo motor 2 rotates clockwise at the set speed, and the dummy torso 7 self-resets, causing the reset coupling 5 to reset to its initial state without the torsional force of the servo motor 2; the dummy torso 7 returns to its initial installation state, and the torsion measurement ends.

[0032] Installation for torso torsion measurement of dummy torso 7: First, disassemble the hip tube positioning plate 12 and the torso clamping connecting plate 10, and remove the hip tube limiter 14. Move the torso mounting bracket 15 to the outside of the torso mounting track 16. Place the dummy torso 7 to be measured on the torso mounting bracket 15 as shown in the diagram. Push the torso mounting bracket 15 and the dummy torso 7 into the hip tube positioning sleeve 13. Install the hip tube limiter 14 to constrain the hip tube portion of the dummy torso 7. Then install the hip tube positioning plate. 12. Fix the buttocks of the dummy torso 7; and install the torso clamping connecting plate 10; adjust the state of the dummy torso 7, and place the torso clamping positioning block 11 on the torso clamping fixing plate 1 8 and the torso clamping fixing plate 2 9. Tighten the torso of the dummy torso 7 with the fastening bolts; the neck axis of the dummy torso 7 is concentric with the axis of the torque sensor 4 and the reset coupling 5. The installation is completed, and then the host computer test program is started. The torque value of the torso of the dummy torso 7 is set according to the program.

[0033] In summary, by means of the above-mentioned technical solution of the present invention, this design, through the self-resetting function of the dummy torso 7, and further through the spacing of the reset coupling 5, generates the function of automatically returning the dummy torso 7 to its original position without external force, thereby improving the convenience of torsion measurement of the dummy torso 7 and accelerating the measurement efficiency.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dummy torso torque measuring device, characterized in that, The device includes a main frame (1), a servo motor (2) on top of the main frame (1), the servo motor (2) being connected to a reduction mechanism (3), a torque sensor (4) at the bottom of the reduction mechanism (3), a reset coupling (5) connected to the top of the main frame (1) at the bottom of the torque sensor (4), an angle sensor (6) located below the servo motor (2) at the top of the main frame (1), a dummy torso (7) inside the main frame (1), a clamping mechanism at the top of the dummy torso (7), a positioning mechanism at the bottom of the dummy torso (7), and a mounting mechanism at the bottom of the dummy torso (7). The neck axis of the dummy torso (7) is concentric with the axis of the torque sensor (4) and the reset coupling (5). The upper and lower key teeth of the reset coupling (5) have a fixed spacing to meet the angle difference when the dummy torso (7) rotates to the maximum angle and returns to the initial position, so that the process of the dummy torso (7) returning to the initial position is consistent with the actual dynamic test.

2. The dummy torso torque measuring device according to claim 1, characterized in that, The deceleration mechanism (3) is connected to the top of the main frame (1) via a fixed column on the side away from the servo motor (2), and the reset coupling (5) is located between the angle sensor (6) and the fixed column.

3. The dummy torso torque measuring device according to claim 1, characterized in that, The bottom end of the main frame (1) is provided with a base plate that is perpendicular to the main frame (1).

4. The dummy torso torque measuring device according to claim 1, characterized in that, The clamping mechanism includes a torso clamping fixing plate one (8) and a torso clamping fixing plate two (9) symmetrically arranged on both sides of the inner wall of the main frame (1). The torso clamping fixing plate one (8) and the torso clamping fixing plate two (9) are connected by a torso clamping connecting plate (10) on one side. The top ends of the torso clamping fixing plate one (8) and the torso clamping fixing plate two (9) are connected by a top plate connected to the output shaft of the reset coupling (5). The torso clamping fixing plate one (8) is provided with a torso clamping positioning block (11) on the side near the dummy torso (7).

5. The dummy torso torque measuring device according to claim 1, characterized in that, The positioning mechanism includes buttock positioning plates (12) arranged symmetrically on both sides of the dummy torso (7). Each buttock positioning plate (12) is provided with a buttock limiter (14) on the side of the dummy torso (7). Each buttock limiter (14) is connected to the buttock positioning plate (12) through a buttock positioning bushing (13).

6. The dummy torso torque measuring device according to claim 3, characterized in that, The installation mechanism includes a torso mounting plate (15) located at the bottom of the dummy torso (7), and the torso mounting plate (15) is movably connected to a torso mounting track (16) located at the top of the base plate and symmetrically arranged.

Images