Dummy shank test fixture

Abstract

The utility model discloses a dummy shank test fixture, which relates to the technical field of vehicle test and comprises a support mechanism, a pelvis simulation mechanism, a shank simulation mechanism and a foot simulation mechanism. Wherein the supporting mechanism comprises a rectangular screw hole plate, a supporting frame bottom plate arranged on the rectangular screw hole plate, a supporting frame moving block arranged on the supporting frame bottom plate in a sliding mode and a main supporting frame welded to the supporting frame moving block, and the pelvis simulation mechanism comprises a pelvis rotating locking block installed at the preset position of the supporting mechanism. By arranging the supporting mechanism, the pelvis simulation mechanism, the shank simulation mechanism and the foot simulation mechanism, shank test requirements of different types of dummies can be met, knee spacing, ankle spacing, shank angle and the like can be adjusted, the application range is wide, meanwhile, test dummy resources can be prevented from being occupied for a long time, and the test efficiency is improved. And the dummy shank measurement precision is high and the flexibility is good in the repetitive test.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle testing, and particularly relates to a test fixture for a dummy calf. Background Art

[0002] The knee airbag in the front row of a vehicle is used to protect the calves of the driver and passengers. Usually, the knee airbag will deploy obliquely upward towards the rear of the vehicle to protect the calves of the driver and passengers. However, the deployment form and deployment time of the knee airbag need to be confirmed through tests.

[0003] Currently, the existing test method is to place a dummy of the corresponding model on the seat, and then adjust the knee distance, ankle distance, calf angle, and relative position of the calf to the IP of the dummy to meet the test requirements. However, this method occupies the resources of the test dummy and has poor repeatability measurement accuracy. Summary of the Utility Model

[0004] Purpose of the utility model: The utility model aims to provide a test fixture for a dummy calf to solve the above problems existing in the prior art.

[0005] Technical solution: A test fixture for a dummy calf includes a support mechanism, a pelvis simulation mechanism, a calf simulation mechanism, and a foot simulation mechanism;

[0006] Among them, the support mechanism includes a rectangular screw hole plate, a support frame bottom plate arranged on the rectangular screw hole plate, a support frame moving block slidably arranged on the support frame bottom plate, and a main support frame welded to the support frame moving block. The pelvis simulation mechanism includes a pelvis rotation locking block installed at a predetermined position on the support mechanism, a pelvis simulation part connected to the pelvis rotation locking block, and a femur moving block slidably arranged on the pelvis simulation part. The foot simulation mechanism includes a foot bottom block arranged at a predetermined position on the rectangular screw hole plate, and a foot moving block slidably arranged on the foot bottom block. The calf simulation mechanism includes a telescopic calf simulation part arranged between the pelvis simulation mechanism and the foot simulation mechanism, and an upper adjustment femur simulation part and a lower adjustment femur simulation part connected to both ends of the telescopic calf simulation part and respectively connected to the femur moving block and the foot moving block.

[0007] In a further embodiment, first waist-shaped holes corresponding to the screw holes on the rectangular screw hole plate are opened on both the support frame bottom plate and the foot bottom block, and the support frame bottom plate and the foot bottom block are connected to the rectangular screw hole plate through bolts adapted to the first waist-shaped holes.

[0008] In a further embodiment, adjustment screw holes are also provided on the support frame bottom plate and the foot bottom block. Second waist-shaped holes adapted to the adjustment screw holes are provided on the support frame moving block and the foot moving block. The support frame moving block is connected to the support frame bottom plate, and the foot moving block is connected to the foot bottom block through bolts adapted to the second waist-shaped holes.

[0009] In a further embodiment, a third waist-shaped hole is provided on the pelvis simulation part, and a fourth waist-shaped hole corresponding to the third waist-shaped hole is provided on the femur moving block. The pelvis simulation part is connected to the femur moving block through bolts adapted to the third waist-shaped hole and the fourth waist-shaped hole.

[0010] In a further embodiment, both the upper adjustable femur simulation part and the lower adjustable femur simulation part are universal spherical hinge structures for cooperatively adjusting the angle of the telescopic calf simulation part.

[0011] In a further embodiment, bolt holes are correspondingly provided on the main support frame and the pelvis rotation locking block. The main support frame is connected to the pelvis rotation locking block through bolts adapted to the bolt holes.

[0012] Beneficial effects: The present utility model discloses a dummy calf test fixture. By providing a support mechanism, a pelvis simulation mechanism, a calf simulation mechanism, and a foot simulation mechanism, the calf test requirements of different types of dummies can be realized, and the knee distance, ankle distance, calf angle, etc. can be adjusted. The applicable range is wide. At the same time, it can avoid the long-term occupation of test dummy resources, and the measurement accuracy of the dummy calf in repeated test tests is high, and the flexibility is good. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the whole of the present utility model.

[0014] Figure 2 It is Figure 1 The partial enlarged view of A in

[0015] Figure 3 It is Figure 1 The partial enlarged view of B in

[0016] Figure 4 It is Figure 1 The partial enlarged view of C in

[0017] The reference numerals in the figures are as follows: 1, support mechanism; 101, rectangular threaded hole plate; 102, main support frame; 103, support frame bottom plate; 104, support frame moving block; 2, pelvis simulation mechanism; 201, pelvis simulation part; 202, femur moving block; 203, pelvis rotation locking block; 3, lower leg simulation mechanism; 301, telescopic lower leg simulation part; 302, upper adjustable femur simulation part; 303, lower adjustable femur simulation part; 4, foot simulation mechanism; 401, foot moving block; 402, foot bottom block. Detailed implementation mode

[0018] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0019] The applicant believes that the existing test method is to place a dummy of the corresponding model on the seat, and then adjust the knee distance, ankle distance, lower leg angle, and relative position of the lower leg to the IP of the dummy to meet the test requirements. However, this method occupies the test dummy resources and has poor repeatability measurement accuracy.

[0020] For this reason, the applicant proposes a test fixture for the lower leg of a dummy, as Figures 1-4 shown, which includes a support mechanism 1, a pelvis simulation mechanism 2, a lower leg simulation mechanism 3, and a foot simulation mechanism 4.

[0021] Among them, the support mechanism 1 includes a rectangular threaded hole plate 101, a support frame bottom plate 103 arranged on the rectangular threaded hole plate 101, a support frame moving block 104 slidably arranged on the support frame bottom plate 103, and a main support frame 102 welded to the support frame moving block 104.

[0022] In this application, the support mechanism 1 is used to support and fix the test fixture for the lower leg of the dummy. The main support frame 102 is horizontally and longitudinally built by square tubes of corresponding sizes and welded into a right triangle frame, which is welded to the support frame moving block 104.

[0023] As Figures 1-2 shown, the pelvis simulation mechanism 2 includes a pelvis rotation locking block 203 installed at a predetermined position on the support mechanism 1, a pelvis simulation part 201 vertically welded to the pelvis rotation locking block 203, and a femur moving block 202 slidably arranged on the pelvis simulation part 201.

[0024] In this application, the pelvis simulation mechanism 2 is used to simulate the pelvis and adjust the lateral spacing of the calf simulation mechanism 3. Corresponding bolt holes are provided on the main support frame 102 and the pelvis rotation locking block 203. The main support frame 102 and the pelvis rotation locking block 203 are connected by bolts adapted to the bolt holes, which facilitates the overall angular rotation of the pelvis simulation mechanism 2 and realizes the adjustment of the angle of the calf simulation mechanism 3. The pelvis simulation part 201 is perpendicularly welded to the pelvis rotation locking block 203.

[0025] As Figures 1-4 shown, the foot simulation mechanism 4 includes a foot bottom block 402 provided at a predetermined position on the rectangular screw hole plate 101, and a foot moving block 401 slidably provided on the foot bottom block 402.

[0026] In this application, the foot simulation mechanism 4 is used to simulate the foot, adjust the lateral spacing of the foot, and adjust the inclination angle of the calf simulation mechanism 3.

[0027] As Figures 1-3 shown, the calf simulation mechanism 3 includes a telescopic calf simulation part 301 provided between the pelvis simulation mechanism 2 and the foot simulation mechanism 4, and an upper adjustable leg bone simulation part 302 and a lower adjustable leg bone simulation part 303 connected to both ends of the telescopic calf simulation part 301 and connected to the leg bone moving block 202 and the foot moving block 401 respectively.

[0028] In this application, the calf simulation mechanism 3 is used to simulate the calf of a dummy. Both the upper adjustable leg bone simulation part 302 and the lower adjustable leg bone simulation part 303 are universal spherical hinge structures, which are used to cooperate with the adjustment of the angle of the telescopic calf simulation part 301. The telescopic calf simulation part 301 is set as a telescopic structure and is set as a cylindrical shape, which can not only better simulate the calf of a dummy but also facilitate the angle adjustment of the calf simulation mechanism 3.

[0029] At the same time, as a preferred solution of this application, two support frame bottom plates 103 and support frame moving blocks 104 are symmetrically provided, which can improve the stability of support and fixation, etc. A pair of pelvis simulation parts 201, leg bone moving blocks 202, telescopic calf simulation parts 301, upper adjustable leg bone simulation parts 302, lower adjustable leg bone simulation parts 303, foot moving blocks 401, and foot bottom blocks 402 are correspondingly provided, which can better simulate the pelvis, calf, and foot, etc.

[0030] In addition, as Figures 1-4As shown, first kidney-shaped holes corresponding to the screw holes on the rectangular screw hole plate 101 are provided on both the support frame bottom plate 103 and the foot bottom block 402. The support frame bottom plate 103 and the foot bottom block 402 are connected to the rectangular screw hole plate 101 through bolts adapted to the first kidney-shaped holes. Adjusting screw holes are also provided on the support frame bottom plate 103 and the foot bottom block 402. Second kidney-shaped holes adapted to the adjusting screw holes are provided on the support frame moving block 104 and the foot moving block 401. The support frame moving block 104 and the support frame bottom plate 103, as well as the foot moving block 401 and the foot bottom block 402, are all connected through bolts adapted to the second kidney-shaped holes. A third kidney-shaped hole is provided on the pelvis simulation part 201, and a fourth kidney-shaped hole corresponding to the third kidney-shaped hole is provided on the leg bone moving block 202. The pelvis simulation part 201 and the leg bone moving block 202 are connected through bolts adapted to the third kidney-shaped hole and the fourth kidney-shaped hole. At the same time, by loosening or tightening the corresponding bolts, the corresponding connecting components can be adjusted to corresponding positions.

[0031] In this application, kidney-shaped holes are provided on the leg bone moving block 202, the pelvis simulation part 201, the foot moving block 401, the foot bottom block 402, the support frame moving block 104, and the support frame bottom plate 103, which can be used to adjust the knee distance, the ankle distance, and the calf angle, etc. After the adjustment is completed, fastening can be achieved by passing the corresponding bolts through the corresponding kidney-shaped holes.

[0032] During actual use, as a preferred solution of this application, the up-and-down position of the leg bone moving block 202 on the pelvis simulation part 201 is adjusted, and the front-and-back position of the foot moving block 401 is adjusted to adjust the inclination angle of the telescopic calf simulation part 301. The inclination angle of the telescopic calf simulation part 301 can be adjusted within 30° - 50°.

[0033] The left-and-right position of the leg bone moving block 202 on the pelvis simulation part 201 is adjusted, and the left-and-right position of the foot bottom block 402 is adjusted to adjust the knee distance. The knee distance can be adjusted within 160mm - 310mm.

[0034] The left-and-right position of the foot bottom block 402 on the rectangular screw hole plate 101 is adjusted to adjust the ankle distance. The ankle distance can be adjusted within 160mm - 310mm.

[0035] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation on the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined by the appended claims.

Claims

1. A dummy calf test fixture, characterized in that, Comprising: A support mechanism, including a rectangular threaded hole plate, a support frame bottom plate disposed on the rectangular threaded hole plate, a support frame moving block slidably disposed on the support frame bottom plate, and a main support frame welded to the support frame moving block; A pelvis simulation mechanism, including a pelvis rotation locking block installed at a predetermined position on the support mechanism, a pelvis simulation part connected to the pelvis rotation locking block, and a femur moving block slidably disposed on the pelvis simulation part; A foot simulation mechanism, including a foot bottom block disposed at a predetermined position on the rectangular threaded hole plate, and a foot moving block slidably disposed on the foot bottom block; A calf simulation mechanism, including a telescopic calf simulation part disposed between the pelvis simulation mechanism and the foot simulation mechanism, and an upper adjustable femur simulation part and a lower adjustable femur simulation part connected to both ends of the telescopic calf simulation part and respectively connected to the femur moving block and the foot moving block.

2. The dummy calf test fixture according to claim 1, wherein: Both the support frame bottom plate and the foot bottom block are provided with first waist-shaped holes corresponding to the threaded holes on the rectangular threaded hole plate; The support frame bottom plate and the foot bottom block are connected to the rectangular threaded hole plate by bolts adapted to the first waist-shaped holes.

3. The dummy calf test fixture according to claim 1, characterized in that: The support frame bottom plate and the foot bottom block are further provided with adjustment threaded holes; The support frame moving block and the foot moving block are provided with second waist-shaped holes adapted to the adjustment threaded holes; The support frame moving block and the support frame bottom plate, and the foot moving block and the foot bottom block are both connected by bolts adapted to the second waist-shaped holes.

4. A dummy calf test fixture according to claim 1, characterized in that: The pelvis simulation part is provided with a third waist-shaped hole; The femur moving block is provided with a fourth waist-shaped hole corresponding to the third waist-shaped hole; The pelvis simulation part and the femur moving block are connected by bolts adapted to the third waist-shaped hole and the fourth waist-shaped hole.

5. The dummy calf test fixture according to claim 1, wherein: Both the upper adjustable femur simulation part and the lower adjustable femur simulation part are universal spherical hinge structures for cooperatively adjusting the angle of the telescopic calf simulation part.

6. The dummy calf test fixture according to claim 1, wherein: Corresponding bolt holes are provided on the main support frame and the pelvis rotation locking block; The main support frame and the pelvis rotation locking block are connected by bolts adapted to the bolt holes.

Images