Endurance test tool for tail door limiter
By designing a tailgate limiter durability testing fixture suitable for multiple vehicle models, the problem of unreasonable existing fixture structure was solved, achieving high accuracy and high efficiency in durability testing, and reducing development costs and time.
Patent Information
- Application Number
- CN202520310949.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-25
AI Technical Summary
The existing tailgate limiter durability testing fixture has an unreasonable structural design, short service life, low testing accuracy, is only applicable to a single vehicle model, and needs to be redeveloped for different vehicle models, wasting time and costs.
A durability testing fixture was designed, comprising a base plate, a sliding mechanism, a tailgate side limiter mounting assembly, and a vehicle body side limiter mounting assembly. The fixture is adaptable to multiple different vehicle models by fine-tuning the mounting assembly. The sliding mechanism, which uses a slider and guide rod, reduces frictional resistance, and a control box is provided for experimental control.
It improves the accuracy and applicability of experiments, enables two sets of experiments to be conducted simultaneously, reduces tooling development costs and cycles, extends service life, and is suitable for durability testing of multiple vehicle models.
Smart Images
Figure CN223742007U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a tooling, and more particularly to a tooling for a durability test of a tailgate limiter. Background Technology
[0002] like Figure 1 As shown, the tailgate limiter includes a tailgate side limiter and a body side limiter. Durability testing of the tailgate limiter requires the use of appropriate testing fixtures to install both the tailgate side limiter and the body side limiter. This simulates the actual vehicle installation state, with the tailgate side limiter moving from its initial position to a contact position with the body side limiter, holding this position for a certain time, and then moving back to its initial position, repeating this cycle. Existing tailgate limiter durability testing fixtures have an inadequate structural design, short service life, low experimental accuracy, and low data reliability. They are only suitable for a single vehicle model, requiring the development of new fixtures for different models, which is time-consuming and costly. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a tailgate limiter durability test fixture. The fixture has a reasonable structural design, high accuracy, and can conduct two sets of tests at the same time. By fine-tuning the corresponding installation components, it can be applied to tailgate limiter products of multiple different models, and has a wide range of applications.
[0004] The technical solution to the above-mentioned technical problem is: a tailgate limiter durability testing fixture, including a base plate, a sliding mechanism, a tailgate side limiter mounting assembly, and a vehicle body side limiter mounting assembly. The sliding mechanism includes two mounting seats, a hollow tube, two guide rods, a slider, and a cylindrical driving magnet for driving the slider to move. The mounting seats are mounted on the base plate, the hollow tube and guide rods are mounted between the two mounting seats, the cylindrical driving magnet is placed inside the hollow tube, and vent ports are installed at both ends of the hollow tube. The slider is movably mounted on the hollow tube and the guide rods via bearings. On the rod, the vehicle side limiter mounting assembly includes two L-shaped mounting brackets and two vehicle side limiter mounting plates. The L-shaped mounting brackets are provided with two transverse elongated mounting holes and two longitudinal elongated mounting holes. The L-shaped mounting brackets are mounted on the base plate by screws and the transverse elongated mounting holes. The vehicle side limiter mounting plates are mounted on the L-shaped mounting brackets by screws and the longitudinal elongated mounting holes. The tailgate side limiter mounting assembly includes a connecting plate and two tailgate side limiter mounting plates that are respectively connected to both sides of the connecting plate by connecting rods. The connecting plate is mounted on the slider.
[0005] Furthermore, the mounting base is also equipped with a rubber limiting block and a spring buffer pin.
[0006] Further, the slider is provided with a steel cylinder at a position opposite to the rubber limiting block and the spring buffer pin, that is, two steel cylinders are arranged at the front end and the rear end of the slider respectively.
[0007] Further, the slider is provided with a steel cylinder at a position opposite to the rubber limiting block and the spring buffer pin, that is, two steel cylinders are arranged at the front end and the rear end of the slider respectively.
[0008] Further, the slider is provided with a steel cylinder at a position opposite to the rubber limiting block and the spring buffer pin, that is, two steel cylinders are arranged at the front end and the rear end of the slider respectively.
[0009] Further, the slider is provided with a steel cylinder at a position opposite to the rubber limiting block and the spring buffer pin, that is, two steel cylinders are arranged at the front end and the rear end of the slider respectively.
[0010] Further, the slider is provided with a steel cylinder at a position opposite to the rubber limiting block and the spring buffer pin, that is, two steel cylinders are arranged at the front end and the rear end of the slider respectively.
[0011] Due to the adoption of the above technical scheme, the utility model has the following beneficial effects:
[0012] 1. The L-shaped mounting support of the vehicle body side limiter mounting assembly is respectively provided with a horizontal long waist mounting hole and a vertical long waist mounting hole, the mounting position of the L-shaped mounting support on the bottom plate and the mounting position of the vehicle body side limiter mounting plate on the L-shaped mounting support can be adjusted through the long waist mounting hole, so that the mounting height and the mounting position of the product are adjusted, the utility model can be used for durability experiments of tail door limiter products of multiple different vehicle models, the application range of the utility model is improved, one-to-one preparation of experimental tools is no longer needed, and the cost and the period of tool development are greatly reduced.
[0013] 2. The utility model is provided with two vehicle body side limiter mounting plates on the bottom plate, and one slider drives the connecting plate connected with two tail door side limiter mounting plates, so that durability experiments of two groups of tail door limiter products can be simultaneously carried out, and the work efficiency is high.
[0014] 3. In the sliding mechanism, the slider is slid cooperatively with the bearing, the hollow tube and the guide rod, the frictional resistance is greatly reduced, the back-and-forth sliding is smoother, the precision is higher, and the utility model is more durable.
[0015] In the following, the technical features of the tail door limiter durability experimental tool will be further described in combination with the drawings and the embodiments. DRAWINGS
[0016] Figure 1 : The tail door limiter is shown in a perspective view.
[0017] Figure 2 : The tail door limiter durability experimental tool is shown in a perspective view (the tail door side limiter mounting assembly is at the starting position).
[0018] Figure 3 The utility model discloses a tail door limiter durability experiment frock plan view (tail door side limiter installation subassembly is in the starting position).
[0019] Figure 4 The utility model discloses a sliding assembly perspective view.
[0020] Figure 5 The utility model discloses a sliding assembly plan view.
[0021] Figure 6 , Figure 5 A-A section view of the utility model.
[0022] Figure 7 , Figure 5 B-B section view of the utility model.
[0023] Figure 8 The utility model discloses a tail door limiter durability experiment frock perspective view (tail door side limiter installation subassembly is in the sticking position).
[0024] In the drawing: 1 - bottom plate, 101 - installation groove.
[0025] 2 - sliding mechanism, 21 - mounting seat, 22 - hollow pipe, 23 - guide rod, 24 - sliding block, 25 - connecting side plate, 26 - aeration interface, 27 - steel cylinder, 28 - spring buffer pin, 29 - rubber limit block, 210 - cylindrical drive magnet, 211 - anti -rotation pin, 212 - bearing.
[0026] 3 - tail door side limiter installation subassembly, 31 - connecting plate, 32 - connecting rod, 33 - tail door side limiter installation plate.
[0027] 4 - car body side limiter installation subassembly, 41 - L type installation support, 411 - horizontal long waist installation hole, 412 - vertical long waist installation hole, 42 - car body side limiter installation plate.
[0028] 5 - air pipe.
[0029] 6 - control box, 61 - switch button, 62 - emergency stop button, 63 - pressure maintaining time display, 64 - test speed display, 65 - counting display.
[0030] P1 - tail door side limiter, P2 - car body side limiter. DETAILED DESCRIPTION
[0031] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0032] Example 1: A durability testing fixture for a tailgate limiter, such as Figures 2-8 As shown, the system includes a base plate 1, a sliding mechanism 2, a tailgate side limiter mounting assembly 3, and a vehicle body side limiter mounting assembly 4. The sliding mechanism 2 includes two mounting seats 21, a hollow tube 22, two guide rods 23, a slider 24, and a cylindrical drive magnet 210 with strong magnetic properties to drive the slider. The mounting seats 21 are mounted on the base plate 1. The hollow tube 22 and the guide rods 23 are mounted between the two mounting seats 21. The two guide rods are located on both sides of the hollow tube. The cylindrical drive magnet 210 is placed inside the hollow tube 22. Ventilation ports 26 are installed at both ends of the hollow tube 22. The slider 24 is movably mounted on the hollow tube and the guide rods through bearings 212. The cylindrical drive magnet 210 can move inside the hollow tube 22 by the push of gas, thereby driving the slider 24 to move on the hollow tube 22 and the guide rods 23.
[0033] The vehicle side limiter mounting assembly 4 includes two L-shaped mounting brackets 41 and two vehicle side limiter mounting plates 42. The L-shaped mounting brackets 41 are provided with two transverse elongated mounting holes 411 and two longitudinal elongated mounting holes 412. The L-shaped mounting brackets 41 are mounted on the base plate 1 by screws and the transverse elongated mounting holes 411. The vehicle side limiter mounting plates 42 are mounted on the L-shaped mounting brackets 41 by screws and the longitudinal elongated mounting holes 412. The purpose of providing transverse elongated mounting holes 411 and longitudinal elongated mounting holes 412 on the L-shaped mounting brackets 41 is to facilitate the adjustment of the mounting position of the L-shaped mounting brackets 41 on the base plate 1 and the mounting position of the vehicle side limiter mounting plates 42 on the L-shaped mounting brackets 41. With minor modifications, this tooling can be used to conduct durability tests on tailgate limiters of various vehicle models.
[0034] The tailgate side limiter mounting assembly 3 includes a connecting plate 31 and two tailgate side limiter mounting plates 33 connected to both sides of the connecting plate via connecting rods 32. The connecting plate 31 is mounted on the slider 24 and moves synchronously with the slider. The function of the tailgate side limiter mounting assembly 3 is to drive the tailgate limiter components fixed on the tailgate side limiter mounting plates 33 to move. When the slider 24 is located on the mounting seat 21 side near the L-shaped mounting bracket 41, the tailgate limiter component (tailgate side limiter P1) mounted on the tailgate side limiter mounting plate 33 contacts the tailgate limiter component (body side limiter P2) mounted on the body side limiter mounting plate 42.
[0035] In this embodiment, two installation grooves 101 are further arranged on the bottom plate, and the two mounting seats 21 of the sliding mechanism are installed in the installation grooves 101, which is more conducive to positioning. As a variation, the installation grooves 101 can also not be arranged.
[0036] In this embodiment, rubber limiting blocks 29 and spring buffer pins 28 are further arranged on the mounting seat 21 of the sliding mechanism 2, which are used for buffering and limiting the sliding block 24, preventing the sliding block from colliding and damaging the mounting seat 21. Steel cylinders 27 are arranged on the sliding block 24 at positions opposite to the rubber limiting blocks and the spring buffer pins, that is, two steel cylinders 27 are arranged at the front end and the rear end of the sliding block respectively, and there are a total of four steel cylinders 27, so that the sliding block is more durable when colliding. An anti-rotation pin 211 is further arranged between the sliding block 24 and the bearing 212, mainly to reduce the friction when the sliding block slides. The sliding block is made of aluminum material, and the bearing is made of steel material. The cylindrical drive magnet 210 moves the sliding block 24 by attracting the bearing 212. The side surfaces of the two mounting seats are further provided with connecting side plates 25, which play a role in protecting and reinforcing the structure. As a variation, when the sliding block can be precisely controlled and will not collide with the mounting seat, the rubber limiting blocks 29, the spring buffer pins 28 and the steel cylinders 27 can also not be arranged.
[0037] In this embodiment, according to the needs of product installation height and product installation hole position of different vehicle tail door limiters, tail door side limiter mounting plates 33 and vehicle body side limiter mounting plates 42 of different sizes and shapes can be configured to improve applicability.
[0038] In this embodiment, the main mounting plate and the connecting plate can be made of light and durable aluminum material, with a service life of more than 10 years, and will not have problems such as damage to tooling precision or inability to use due to rust. The durable test tooling can meet the test in a high and low temperature environment of -30℃ to 80℃.
[0039] In this embodiment, a control box 6 is further included, and an air source is arranged in the control box. The air source is connected with the air passage interfaces 26 at both ends of the hollow pipe through the air pipes 5. A control module (this part is a purchased part) is further arranged in the control box. Switch buttons 61, emergency stop buttons 62, pressure maintaining time displays 63, test speed displays 64 and counting displays 65 are further arranged on the control box.
[0040] According to the durability test requirements of BT / SGMWJ 08227-2016, the limiter assembly (tail door side and vehicle body side cooperation) simulates the real vehicle installation state, and the bench durability test is 40000 times, without deformation, falling off phenomenon, and normal function.
[0041] Test speed: (1.8±0.1) m / s, and the test is placed at room temperature for 0.5 h. The positioner is moved from the starting position to the fit position for 3 s, and then from the fit position to the starting position for 5 s, which is one cycle.
[0042] Experimental process: open the switch, install the tail door side positioner P1 on the tail door side positioner mounting plate 33, install the vehicle body side positioner P2 on the vehicle body side positioner mounting plate 42, and set the constant running speed according to the requirements. In the temperature box, the tail door side positioner P1 is moved from the starting position (as shown in Figure 2 , Figure 3 ) to the fit position (as shown in Figure 8 ) for 3 s, and the interference between the vehicle body side positioner P2 and the tail door side positioner P1 is about 1 mm. Then, it is moved from the fit position to the starting position for 5 s, which is one cycle. After several stable trial runs, the counter is reset to start moving. When the required number of experiments is reached, the temperature box is opened and the switch is turned off, and the experiment at a certain temperature requirement is completed.
[0043] The entire durability test needs to be conducted at normal temperature, high temperature, high humidity, low temperature, and normal temperature for N cycles. The principle of each movement is the same, except that the set parameters are different. The specific requirements are based on the experimental requirements of each project.
[0044] The tail door positioner (tail door side and vehicle body side) bench durability test is N times, without deformation or falling off, and the function is normal. At this time, it can be determined that the product durability test is passed.
Claims
1. A tailgate check arm durability test fixture, characterized by: The utility model relates to a sliding mechanism for tail door side limit stopper installation assembly and vehicle body side limit stopper installation assembly, which comprises a bottom plate (1), a sliding mechanism (2), a tail door side limit stopper installation assembly (3) and a vehicle body side limit stopper installation assembly (4), wherein the sliding mechanism comprises two mounting seats (21), a hollow tube (22), two guide rods (23), a sliding block (24) and a cylindrical driving magnet (210) for driving the sliding block to move, the mounting seats are mounted on the bottom plate, the hollow tube and the guide rods are mounted between the two mounting seats, the cylindrical driving magnet is placed in the hollow tube, and air interfaces (26) are mounted at both ends of the hollow tube, the sliding block is movably mounted on the hollow tube and the guide rods through bearings (212), the vehicle body side limit stopper installation assembly (4) comprises two L-shaped mounting supports (41) and two vehicle body side limit stopper installation plates (42), the L-shaped mounting supports are provided with two transverse long waist mounting holes (411) and two longitudinal long waist mounting holes (412), the L-shaped mounting supports are mounted on the bottom plate through the transverse long waist mounting holes and the longitudinal long waist mounting holes, the vehicle body side limit stopper installation plates are mounted on the L-shaped mounting supports through screws and the longitudinal long waist mounting holes, and the tail door side limit stopper installation assembly (3) comprises a connecting plate (31) and two tail door side limit stopper installation plates (33) connected to both sides of the connecting plate through connecting rods (32), and the connecting plate (31) is mounted on the sliding block (24).
2. The tailgate check stop durability test fixture of claim 1, wherein: The mounting seats are further provided with rubber limit blocks (29) and spring buffer pins (28).
3. The tailgate check strap durability test fixture of claim 2, wherein: Steel cylinders are arranged on the sliding block in positions opposite to the rubber limit blocks and the spring buffer pins, i.e., two steel cylinders (27) are arranged at the front end and the rear end of the sliding block, respectively.
4. The tailgate check strap durability test fixture of any of claims 1-3, wherein: Anti-rotation pins (211) are further arranged between the sliding block and the bearings.
5. The tailgate check strap durability test fixture of any of claims 1-3, wherein: The side surfaces of the two mounting seats of the sliding mechanism are further provided with connecting side plates (25).
6. The tailgate check strap durability test fixture of any of claims 1-3, wherein: The utility model further comprises a control box (6), wherein an air source is arranged in the control box, and the air source is connected to the air interfaces (26) at both ends of the hollow tube through air pipes (5).
7. The tailgate check strap durability test fixture of claim 6, wherein: A control module is further arranged in the control box, and the control box is further provided with a switch button (61), an emergency stop button (62), a pressure maintaining time display (63), a test speed display (64) and a counting display (65).