CN117553950A

CN117553950A - Clamping force prevention testing device

Info

Publication number: CN117553950A
Application number: CN202210934041.2A
Authority: CN
Inventors: 唐星宇; 雍建军; 王燕兵
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2024-02-13

Abstract

The application provides a prevent clamp force testing arrangement for the clamp force of preventing of test door includes: a support base; the sliding rail assembly is supported by the supporting seat and comprises a sliding rail, the sliding rail is configured to have a circular arc profile, and the radius of the circular arc profile is larger than the distance between the rotating shaft of the vehicle door and the edge of the vehicle door; a slide plate connected to a side of the slide rail assembly facing away from the support base and capable of sliding along the slide rail; and a load cell fixedly connected to the sled. According to the technical scheme, the automatic matching and adaptation of the dynamometer test track and the vehicle door edge movement track are realized, manual adjustment operation is reduced, the test accuracy is improved, the test process is simplified, the automatic test is realized, and the test efficiency is improved.

Description

Clamping force prevention testing device

Technical Field

The application relates to the field of vehicle testing, in particular to an anti-pinch force testing device for a vehicle door.

Background

In order to facilitate the user to open and close the tail gate, some automobile tail gates are equipped with an electric function. In order to ensure the safety of users and the service life of the tail gate, the electric tail gate is required to actively stop moving and reverse a certain angle when meeting an obstacle. In order to ensure that the electric tail gate can timely and effectively detect the obstacle, the clamping force of the electric tail gate needs to be controlled within a certain range. The clamping force of the electric tail gate is required to be met under normal temperature working conditions, high and low temperature working conditions are required to be met, and manual testing conditions in a high and low temperature laboratory are too severe, so that an automatic clamping force calibration and testing system for the electric tail gate is required.

Disclosure of Invention

The present application aims to provide an anti-pinch test device to solve or alleviate at least part of the problems mentioned in the background art.

To achieve one of the foregoing objects, according to one aspect of the present application, there is provided an anti-pinching force testing apparatus for testing an anti-pinching force of a vehicle door, the anti-pinching force testing apparatus comprising: a support base; a slide rail assembly supported by the support base, the slide rail assembly including a slide rail configured to have a circular arc profile, and a radius of the circular arc profile is greater than a distance between a rotational axis of the door and an edge of the door; a slide plate connected to a side of the slide rail assembly facing away from the support base and slidable along the slide rail; and a load cell fixedly connected to the sled.

In addition to or as an alternative to one or more of the above features, in a further embodiment a first movement mechanism is provided between the support base and the slide rail assembly, the first movement mechanism driving the slide rail to slide relative to the support base in the circumferential direction of its circular arc profile.

In addition to or as an alternative to one or more of the above features, in a further embodiment, the first movement mechanism comprises a first gear provided on the support base, and a first rack fixedly connected to the slide rail assembly, the first rack being provided in parallel with the slide rail and in engagement with the first gear; the first gear is driven to rotate so as to drive the first rack to move relative to the supporting seat.

In addition to or as an alternative to one or more of the above features, in a further embodiment the support is provided with a first drive for driving the first gear, the first drive being in power connection with the first gear via a first worm gear.

In addition to, or as an alternative to, one or more of the above features, in a further embodiment, a second movement mechanism is provided between the slide rail assembly and the slide plate, the second movement mechanism driving the slide plate to slide along the slide rail.

In addition to or as an alternative to one or more of the above features, in a further embodiment, the second movement mechanism comprises a second gear provided on the slide plate, and a second rack fixedly connected to the slide rail assembly, the second rack being provided in parallel with the slide rail and in engagement with the second gear; and the second gear is driven to move relative to the second rack so as to drive the sliding plate to slide along the sliding rail assembly.

In addition to or as an alternative to one or more of the above features, in a further embodiment a second drive for driving the second gear is provided on the slide, a second worm gear being provided between the second drive and the second gear for power connection.

In addition to or as an alternative to one or more of the above features, in a further embodiment the support seat comprises support pulleys for supporting the slide rail, at least one of the support pulleys being against a side of the slide rail facing the support seat, at least one of the support pulleys being against a side of the slide rail facing away from the support seat.

In addition to or as an alternative to one or more of the above features, in a further embodiment the slide plate comprises a guide pulley for connecting the slide plate and the slide rail; at least one of the guide pulleys abuts against a side of the slide rail facing the slide plate, and at least one of the guide pulleys abuts against a side of the slide rail facing away from the slide plate.

In addition to or as an alternative to one or more of the above features, in a further embodiment the slide comprises a slide body and a load cell holder comprising a holding portion for holding the load cell and an adjustment portion connected to the slide body and being capable of moving the holding portion in a radial direction of the slide assembly towards or away from the slide body.

In addition to or as an alternative to one or more of the above features, in a further embodiment the support base comprises a support mechanism configured to support the slide rail assembly and a lifting mechanism connected to the support mechanism, the lifting mechanism configured to adjust the height of the slide rail assembly.

According to the clamping force prevention testing device, automatic matching and adaptation of the testing track of the dynamometer and the movement track of the edge of the vehicle door are realized, adjustment of the position and the angle of the dynamometer in the testing process is avoided, manual operation is reduced, testing accuracy is improved, the testing process is simplified, automatic testing is realized, and testing efficiency is improved.

Drawings

The disclosure of the present application will be more readily understood with reference to the accompanying drawings. It is to be understood that these drawings are solely for purposes of illustration and are not intended as a definition of the limits of the scope of the present application. In the figure:

FIG. 1 is a schematic illustration of an anti-pinch force test device according to one embodiment of the present application;

FIG. 2 is a schematic view showing a connection portion between the slide rail and the support base in FIG. 1;

FIG. 3 is a schematic view of the connection of the slide plate and the slide rail of FIG. 1;

FIG. 4 shows a schematic layout of the load cell of FIG. 1;

fig. 5 shows a schematic view of the lifting mechanism of the support base in fig. 1.

Detailed Description

The present application will be described in detail below with reference to exemplary embodiments in the accompanying drawings. It should be understood, however, that this application may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the application to those skilled in the art.

Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the figures, it is easy for a person skilled in the art to proceed with appropriate combination or deletion between these technical features (or equivalents thereof), thereby obtaining still further embodiments of the present application that may not be directly mentioned herein, without departing from the technical scope of the present application.

FIG. 1 is a schematic illustration of an anti-pinch force test device 10 for testing the anti-pinch force of a vehicle door, such as the tail door of a vehicle when opened or closed, the test site being typically the edge of the vehicle door, according to one embodiment of the present application. It can be seen that the anti-pinch force test device 10 includes a support base 100, a slide rail assembly 200, a sled 300, and a load cell 400 secured to the sled 300. Wherein the slide rail assembly 200 is supported by the support base 100, the slide rail assembly 200 includes a slide rail 210 having a circular arc profile with a radius larger than a distance between a rotation axis of the door and an edge of the door, thereby providing installation and adjustment spaces for the slide plate 300 and the dynamometer 400. The sliding plate 300 is connected to a side of the sliding rail 210 facing away from the supporting base 100, and is capable of sliding along the sliding rail 210. When the anti-pinch force test is performed, the circle center of the circular arc-shaped sliding rail 210 is positioned on the rotating shaft of the vehicle door, so that when the vehicle door is opened or closed, the circular arc-shaped outline of the sliding rail 210 is matched with the circular arc-shaped movement track formed by the edge of the vehicle door, when the sliding plate 300 slides along the sliding rail 210, the dynamometer 400 is always aligned with the edge of the vehicle door, and the position and the direction of the dynamometer 400 do not need to be adjusted in the whole test process, so that the test position is accurate, and the test process is simple.

Under the arrangement, the clamping force prevention testing device realizes the automatic matching and adaptation of the testing track of the dynamometer and the movement track of the edge of the vehicle door by arranging the circular arc-shaped sliding rail, avoids the adjustment of the position and the angle of the dynamometer in the testing process, improves the testing accuracy, simplifies the testing process and realizes the automatic implementation of the test; manual operation is reduced, smooth test in a high-low temperature laboratory environment is promoted, and test efficiency is improved.

Further implementations or refinements, improvements relating to the anti-pinch test device will be described by way of example below in order to further improve its operational efficiency, reliability or other improvements.

As shown in fig. 1, the rail assembly 200 may include three rails 210, such as a first rail 211, a second rail 212, and a third rail 213, arranged in parallel, the ends of which are fixed to the first rail 201 and the second rail 202, respectively, to improve overall stability. A first movement mechanism is disposed between the support base 100 and the slide rail assembly 200, and the first movement mechanism includes a first gear 110 disposed on the support base 100 and a first rack 220 fixedly connected to the slide rail assembly 200, where the first rack 220 is disposed parallel to the slide rail 210, and may be disposed between the second slide rail 212 and the third slide rail 213, for example, and has a circular arc profile consistent with the slide rail 210. Both ends of the first rack 220 may be fixed to the first rail 201 and the second rail 202, respectively. The first rack 220 is meshed with the first gear 110, and the support base 100 drives the first rack 220 to move relative to the support base 100 by driving the first gear 110 to rotate, so that the sliding rail 210 slides relative to the support base 100 along the circumferential direction of the circular arc profile of the sliding rail, thereby providing a larger moving range for the sliding plate 300 without increasing the length of the sliding rail 210, and avoiding interference with the vehicle body caused by overlong length of the sliding rail 210. In addition, the sliding adjustment of the sliding rail 210 relative to the supporting seat 100 can also realize anti-pinch force test under different door closing angles, so as to adapt to different vehicle model designs or meet the test of the vehicle under different gradients.

In addition, the first gear 110 may be driven by the first driver 120 (e.g., a motor) disposed on the support 100, and the first driver 120 and the first gear 110 may be connected by power through a first worm and gear mechanism, so that the sliding rail 210 may not fall back automatically due to the unidirectional transmission characteristic of the worm and gear, and thus, the first driver 120 does not need to be continuously operated to maintain the position of the sliding rail 210, thereby reducing energy consumption and saving test cost.

In the embodiment shown in fig. 1, a second movement mechanism is provided between the slide rail assembly 200 and the slide plate 300, the second movement mechanism includes a second gear 310 provided on the slide plate 300, and a second rack 230 fixedly connected to the slide rail assembly 200, the second rack 230 being disposed parallel to the slide rail 210, which may be disposed between the first slide rail 211 and the second slide rail 212, for example, and having a circular arc profile consistent with the slide rail 210. Both ends of the second rack 230 may also be fixed to the first rail 201 and the second rail 202, respectively. The second rack 230 is engaged with the second gear 310, and a second driver 320 (e.g., a stepping motor) provided on the sled 300 drives the second gear 310 to move relative to the second rack 230 to drive the sled 300 to slide along the sled assembly 200. The second driver 320 and the second gear 310 may be connected by a second worm and gear mechanism to prevent the sliding plate 300 from falling back by using the unidirectional transmission characteristic of the worm and gear, so as to avoid continuously driving the second driver 320.

In addition, in other embodiments, the toothed belt can be installed on the surface of the bar rod to replace the first rack 220 or the second rack 230 with a large diameter and circular arc shape, and the installation mode can be bonding or soft metal strip compaction, so that the split manufacturing can reduce the processing difficulty and improve the processing efficiency.

Fig. 2 shows a schematic diagram of a connection portion between the sliding rail 210 and the supporting seat 100 in fig. 1. The support base 100 is provided with a support column 140, the end of the support column 140 is connected with a support pulley 130 for supporting the slide rail 210, for example, the support column 140 includes a first support column 141, a second support column 142, a third support column 143, a fourth support column 144, and a fifth support column 145, to which a first support pulley 131, a second support pulley 132, a third support pulley 133, a fourth support pulley 134, and a fifth support pulley 135 are connected, respectively, and heights of the support column 140 are different to accommodate the support heights required at different circumferential positions of the slide rail 210. In other embodiments, more support columns 140 may be provided to improve the stability of the support. As shown in fig. 2, the sliding rail 210 may be configured to have a circular cross section, and the supporting pulley 130 is configured as a concave cylinder having a diameter gradually reduced from both ends toward the middle so that the sliding rail 210 is received in the concave cylinder, and preferably, a radius of a concave profile of the concave cylinder may be the same as a radius of the circular cross section of the sliding rail 210 to better receive and limit the sliding rail 210. As shown in fig. 2, in the supporting pulley 130, the first supporting pulley 131, the second supporting pulley 132, the third supporting pulley 133 and the fourth supporting pulley 134 are abutted against one sides of the first sliding rail 211 and the third sliding rail 213 facing the supporting seat 100 to support, and the fifth supporting pulley 135 presses the second sliding rail 212 from one side of the second sliding rail 212 facing away from the supporting seat 100, thereby improving the stability of the support and preventing the sliding rail assembly 200 from being turned over from the supporting seat 100. The fifth support pulley 135 may be fixedly connected to the fifth support column 145 by a compression bolt. Although in the illustrated embodiment a plurality of support pulleys are provided against the side of the slide rail 210 facing the support 100 and only one of the support pulleys 130 against the side of the slide rail 210 facing away from the support 100, it is easily conceivable that in other embodiments one or more support pulleys 130 may be provided on the side of the slide rail 210 facing the support 100 and one or more support pulleys 130 may be provided on the side of the slide rail 210 facing away from the support 100. The supporting pulley 130 can rotate around the axis thereof, so that the supporting pulley 130 forms rolling connection with the sliding rail 210, and the resistance of the sliding rail 210 sliding relative to the supporting seat 100 is reduced.

Fig. 3 shows a schematic diagram of a connection portion between the sliding plate 300 and the sliding rail 210 in fig. 1, which is similar to the connection manner between the sliding rail 210 and the supporting seat 100 in fig. 2. Sled 300 includes a guide pulley 330 for connecting sled 300 to sled 210, and guide pulley 330 may be configured as a concave cylinder that supports sled 210. In the illustrated embodiment, the first, second, third, and fourth guide pulleys 331, 332, 333, 334 abut against a side of the slide rail 210 facing the slide plate 300 to support the slide plate 300 on the slide rail 210, and the fifth guide pulley 335 abuts against a side of the slide rail 210 facing away from the slide plate 300 to press the slide plate 300 against the slide rail 210 to prevent the slide plate 300 from falling. In addition, the guide pulleys 330 provided at the side of the slide rail 210 facing the slide plate 300 and the side of the slide rail 210 facing away from the slide plate 300 are not limited to the number in the embodiment shown in fig. 3, and in other embodiments, one or more guide pulleys 330 may be provided at the side of the slide rail 210 facing the slide plate 300 and one or more guide pulleys 330 may be provided at the side of the slide rail 210 facing away from the slide plate 300. The guide pulley 330 is also capable of rotating about its own axis to form a rolling connection between the sled 300 and the sled 210, reducing the resistance to sliding of the sled 300.

Fig. 4 shows a schematic layout of the load cell 400 of fig. 1. It can be seen that sled 300 includes sled body 340 and dynamometer holder 350, dynamometer holder 350 including holding portion 351 and adjustment portion 352. The holding portion 351 is configured in the shape of a rectangular groove to accommodate the load cell 400, and the load cell 400 may be pressed and fixed by a pressing bolt at a side of the holding portion 351. The adjusting part 352 is connected with the slide body 340 and is capable of moving the holding part 351 toward or away from the slide body 340 in the radial direction of the slide rail assembly 200, and in the illustrated embodiment, the adjusting part 352 extends from the holding part 351 toward the slide body 340 and is inserted into the slide body 340, and by adjusting the depth of insertion of the adjusting part 352, the position of the dynamometer 400 in the radial direction of the slide rail 210 can be adjusted, so that the distance between the dynamometer 400 and the door rotating shaft can be adjusted, and thus the anti-pinching force of doors of different sizes can be measured. When the door opening anti-pinch force test is performed, the sliding plate 300 is arranged outside the vehicle door, and the detection head of the dynamometer 400 is arranged towards the edge of the vehicle door; during door closing anti-pinch force test, the sliding plate 300 is arranged on the inner side of the vehicle door, the detection heads 410 of the dynamometers 400 are arranged towards the edge of the vehicle door, and during high-low temperature laboratory test, two dynamometers 400 can be reversely overlapped to avoid reinstallation of the dynamometers 400 in the test process.

Fig. 5 shows a schematic view of the lifting mechanism 150 of the support 100 in fig. 1. The support base 100 may include a support mechanism and a lifting mechanism 150 coupled to the support mechanism. The supporting mechanism includes the support column 140, the support pulley 130, the first gear 110, the first driver 120, etc. for supporting the slide rail assembly 200 described in fig. 1 and 2, and the elevating mechanism 150 may include an upper base plate 151, a lower base plate 152, a folder 153 (e.g., a scissors stay) connected between the upper base plate and the lower base plate, a third driver 154 (e.g., a motor), etc. as shown in fig. 5. The support column 140 is fixedly connected to the upper base plate 151, and the first gear 110, the first driver 120, the first worm gear mechanism, and the like are disposed on the upper base plate 151. The folder 153 includes a plurality of lateral levers 1531, and a plurality of cross levers 1532 cross-connected to ends of the lateral levers, and the third driver 154 drives the lateral levers 1531 to move (as shown in fig. 5, drives the lowermost lateral lever 1531 indicated), so that the plurality of cross levers 1532 fold or unfold, thereby driving the upper base plate 151 to move closer to or farther from the lower base plate 152, thereby adjusting the elevation of the slide rail assembly 200, so that the center of the circle of the slide rail 210 can be adjusted to be positioned on the rotation shaft of the vehicle door. The geometry of the door is fixed for the same vehicle and therefore frequent adjustment of the lift mechanism 150 is not required. In addition, the lifting mechanism 150 can also be manually adjusted by driving the screw rod by a hand wheel. To avoid sloshing during testing, the support 100 may also be held down with a sandbag.

Under this kind of arrangement, according to this application through setting up convex slide rail for dynamometer direction of movement is unanimous with door edge direction of motion, has guaranteed the accuracy of test, and through the adjustment portion of dynamometer holder, elevating system of supporting seat etc. realized testing arrangement's geometry's regulation, make testing arrangement can be applicable to multiple door, improved testing arrangement's suitability.

The above examples mainly illustrate the anti-pinch force test device of the present application. Although only a few embodiments of the present application have been described, those of ordinary skill in the art will appreciate that the present application may be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the illustrated examples and embodiments are to be considered as illustrative and not restrictive, and the application is intended to cover various modifications and substitutions without departing from the spirit and scope of the technical solutions of the application.

Claims

1. An anti-pinch force testing device for testing anti-pinch force of a vehicle door, the anti-pinch force testing device comprising:

a support base (100);

a slide rail assembly (200) supported by the support base (100), the slide rail assembly (200) including a slide rail (210), the slide rail (210) configured to have a circular arc profile, and a radius of the circular arc profile is greater than a distance between a rotational axis of the door and an edge of the door;

-a slide plate (300), which slide plate (300) is connected to a side of the slide rail assembly (200) facing away from the support base (100) and is slidable along the slide rail (210); and

-a load cell (400), said load cell (400) being fixedly connected to said sled (300).

2. The clamping force prevention testing device according to claim 1, wherein a first movement mechanism is arranged between the support base (100) and the sliding rail assembly (200), and the first movement mechanism drives the sliding rail (210) to slide relative to the support base (100) along the circumferential direction of the circular arc profile thereof.

3. The anti-pinch force test device of claim 2, wherein the first movement mechanism comprises a first gear (110) disposed on the support base (100), and a first rack (220) fixedly connected to the slide rail assembly (200), the first rack (220) being disposed parallel to the slide rail (210) and engaged with the first gear (110); the first gear (110) is driven to rotate so as to drive the first rack (220) to move relative to the supporting seat (100).

4. A clamping force prevention testing device according to claim 3, characterized in that a first driver (120) for driving the first gear (110) is arranged on the supporting seat (100), and the first driver (120) and the first gear (110) are in power connection through a first worm gear mechanism.

5. The anti-pinch force testing device of claim 1, wherein a second movement mechanism is provided between the slide rail assembly (200) and the slide plate (300), the second movement mechanism driving the slide plate (300) to slide along the slide rail (210).

6. The anti-pinch force test device of claim 5, wherein the second movement mechanism comprises a second gear (310) disposed on the sled (300) and a second rack (230) fixedly connected to the sled assembly (200), the second rack (230) being disposed parallel to the sled (210) and engaged with the second gear (310); the second gear (310) is driven to move relative to the second rack (230) so as to drive the sliding plate (300) to slide along the sliding rail assembly (200).

7. The anti-pinch force testing device according to claim 6, wherein a second driver (320) for driving the second gear (310) is provided on the slide plate (300), and a second worm gear mechanism is provided between the second driver (320) and the second gear (310) for power connection.

8. The clamping force prevention testing device according to any of claims 1-4, characterized in that the support base (100) comprises support pulleys (130) for supporting the slide rail (210), at least one of the support pulleys (130) being against a side of the slide rail (210) facing the support base (100), at least one of the support pulleys (130) being against a side of the slide rail (210) facing away from the support base (100).

9. The anti-pinch force test device of any of claims 5-7, wherein the sled (300) comprises guide pulleys (330) for connecting the sled (300) and the slide rails (210), at least one of the guide pulleys (330) abutting against a side of the slide rail (210) facing the sled (300), at least one of the guide pulleys (330) abutting against a side of the slide rail (210) facing away from the sled (300).

10. The pinch resistant force testing device of any of claims 1-7, wherein the sled (300) comprises a sled body (340) and a dynamometer holder (350), the dynamometer holder (350) comprising a holding portion (351) and an adjusting portion (352), the holding portion (351) being for holding the dynamometer (400), the adjusting portion (352) being connected with the sled body (340) and being capable of moving the holding portion (351) in a radial direction of the slide assembly (200) closer to or farther from the sled body (340).

11. The pinch resistant force test device of any of claims 1-7, wherein the support base (100) comprises a support mechanism configured to support the slide rail assembly (200) and a lifting mechanism (150) connected to the support mechanism, the lifting mechanism (150) configured to adjust a height of the slide rail assembly (200).