Vehicle door limiting mechanism and hinge durability test device

Abstract

The utility model provides a vehicle door limiting mechanism and hinge durability test device, which comprises a vehicle door, a door frame, an electrical control box, a door frame fixing assembly, a cylinder, a cylinder fixing seat, a U-shaped fixing support, an air pipe and a cylinder fixing support, the U-shaped fixing support is fixedly connected onto the vehicle door, the cylinder fixing seat is fixedly connected onto the cylinder fixing support, and the air pipe is fixedly connected onto the cylinder fixing support. The front end of an air cylinder piston rod is hinged to the U-shaped fixing support, the rear end of the air cylinder is hinged to the air cylinder fixing base, and the air cylinder piston rod conducts periodic reciprocating telescopic motion to drive the automobile door to rotate around the hinge axis in a reciprocating mode within a preset angle range. The vehicle door limiting mechanism and the hinge to be subjected to durability test are installed between the vehicle door and the door frame for durability test, the real use condition and the actual dynamic working condition of the vehicle door limiting mechanism and the hinge are simulated, the overall durability of the vehicle door limiting mechanism and the hinge assembly is comprehensively verified, and the test efficiency is high. And the test process can be observed in real time and test data can be recorded in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts testing, and particularly relates to a door limiting mechanism and a hinge durability test device. Background Technique

[0002] Automobile door limiting mechanisms and hinge assemblies are components that connect the door and the vehicle body together and are important components of the door assembly. The hinge ensures the smooth opening and closing of the door and at the same time guarantees the safety of passengers. The door limiting mechanism restricts the opening angle of the door. During the use of the automobile, with the frequent opening and closing of the door, the limiting mechanism and the hinge assembly of the door repeatedly rotate and swing around the axis. The design quality and manufacturing quality of these components directly affect the reliability of the door assembly. For the new product trial production design verification and quality problem determination of the door limiting mechanism and the hinge assembly, it is required to use the durability test data of the door limiting mechanism and the hinge assembly to verify the rationality of the design of the door limiting mechanism and the hinge assembly, or as the basis for quality problem determination.

[0003] Currently, for the durability test of the door limiting mechanism and the hinge assembly, generally only the function of the components is tested using a special test bench, which cannot fully simulate the dynamic working conditions of the door assembly and cannot fully consider the influence of the door assembly on the limiting mechanism and the hinge assembly. The test data will seriously affect the determination of product performance and the judgment of product quality. Therefore, it is very necessary to provide a door limiting mechanism and a hinge durability test device that can simulate the actual use conditions of the door assembly and truly reflect the durability performance of the door limiting mechanism and the hinge assembly. Content of the Utility Model

[0004] Aiming at the problems mentioned in the above background technique, the utility model provides a durability test device for installing a door limiting mechanism and a hinge assembly on a door assembly for testing to fully simulate the actual dynamic working conditions of the door assembly.

[0005] The utility model adopts the following technical solutions: A door limiting mechanism and a hinge durability test device, including a door, a door frame, an electrical control box, a door frame fixing component and a door driving component. The hinge and the door limiting mechanism to be subjected to the durability test are connected and installed between the door and the door frame. The door frame fixing component is used to vertically fix the door frame.

[0006] The door driving assembly includes a cylinder, a cylinder fixing seat, a U-shaped fixing bracket, air pipes and a cylinder fixing bracket. The U-shaped fixing bracket is fixedly connected to the door. The cylinder fixing seat is fixedly connected to the cylinder fixing bracket. The front end of the piston rod of the cylinder is hinged to the U-shaped fixing bracket, and the rear end of the cylinder barrel is hinged to the cylinder fixing seat. The two air pipes are respectively connected to the corresponding interfaces at the head end and the tail end of the cylinder barrel. The electrical control box controls the piston rod of the cylinder to perform periodic reciprocating telescopic motion through the two air pipes, driving the door to reciprocally rotate around the hinge axis within a preset angle range.

[0007] Further, the durability test device further includes a test workbench. The electrical control box, the doorframe fixing assembly and the cylinder fixing bracket are fixedly installed on the test workbench, and protective plates or protective nets are installed around the test workbench.

[0008] Further, the U-shaped fixing bracket is fastened or welded to the door by bolts. The cylinder fixing seat is fastened or welded to the cylinder fixing bracket by bolts. The electrical control box, the doorframe fixing assembly and the cylinder fixing bracket are all fastened or welded to the test workbench by bolts.

[0009] Further, the doorframe fixing assembly includes a bottom plate, a column, an inclined stay bar and a doorframe mounting plate. The column is fastened or welded to the bottom plate by bolts. The inclined stay bar is obliquely fixed between the bottom plate and the column by being fastened or welded. The doorframe mounting plate is fastened or welded to the column, and the plane angle between the doorframe mounting plate and the bottom plate is 90°. The doorframe is fastened or welded to the doorframe mounting plate by bolts.

[0010] Further, a magnetic switch is respectively installed at the front and rear parts outside the cylinder barrel. The length of the moving stroke of the cylinder piston is controlled by adjusting the relative position or relative distance of the two magnetic switches.

[0011] Further, the electrical control box includes a pneumatic pressure regulating valve and a counter. The pneumatic pressure is regulated through the pneumatic pressure regulating valve to adjust the moving speed of the piston in the cylinder. The counter counts by detecting the reciprocating motion period of the cylinder piston through the displacement sensor in the magnetic switch.

[0012] Further, the durability test device further includes a camera assembly. The camera assembly is directed at the hinge and the door limit mechanism for shooting, and is used for observing and monitoring the hinge and the door limit mechanism in real time during the test.

[0013] Further, the counter is arranged within the shooting area of the camera assembly, and the counter, the hinge and the door limit mechanism can be observed and monitored synchronously in real time.

[0014] The door limit mechanism and hinge durability test device in this utility model patent has the following beneficial effects: Installing the door limit mechanism and hinge between the door and the door frame for durability testing realizes simulating the actual use situation and actual dynamic working conditions of the door limit mechanism and hinge, and can comprehensively verify the overall durability performance of the door limit mechanism and hinge assembly; Driving the door to reciprocally rotate around the hinge axis within a preset angle range through the reciprocating motion of the cylinder piston rod, the test efficiency is high, and functions such as observing the test process in real time and recording test data in real time can be achieved; Generally speaking, this device has a simple structure, small size, light weight, convenient operation, stable and reliable performance, can be compatible with multiple product varieties, has good versatility, and reduces the use cost and manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. Figure 1 is the overall top view schematic diagram of this utility model;

[0016] FIG. Figure 2 is the overall left view schematic diagram of this utility model;

[0017] The description of the reference numerals is as follows: test workbench 1, door 2, door frame 3, hinge 4, door limit mechanism 5, door frame fixing component 6, cylinder 7, cylinder fixing seat 8, U-shaped fixing bracket 9, air pipe 10, magnetic switch 11, cylinder fixing bracket 12, electrical control box 13, camera component 14, protection plate or protection net 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. The following further explains the content of the utility model in combination with the drawings:

[0019] Embodiment 1

[0020] Referring to the attached drawings of the specification Figure 1 、 2 , a door limit mechanism and hinge durability test device includes a test workbench 1, a door 2, a door frame 3, a door frame fixing component 6, a cylinder 7, a cylinder fixing seat 8, a U-shaped fixing bracket 9, an air pipe 10, a cylinder fixing bracket 12 and an electrical control box 13; The hinge 4 and the door limit mechanism 5 to be subjected to durability testing are connected and installed between the door 2 and the door frame 3, so that the door 2 can reciprocally rotate around the axis of the hinge 4 within a specified angle range, realizing the smooth opening and closing of the door 2.

[0021] Referring to the attached drawings of the specification Figure 2, the doorframe 3 is vertically and fixedly installed on the doorframe fixing assembly 6; the doorframe fixing assembly 6 includes a base plate, a column, an inclined tie rod and a doorframe mounting plate. The base plate is fastened or welded to the test workbench 1 by bolts, the column is fastened or welded to the base plate by bolts, the inclined tie rod is obliquely fixed between the base plate and the column by bolts in a fastening or welding manner to maintain the stability of the column, the doorframe mounting plate is vertically fixed to the column by bolts in a fastening or welding manner, and the plane angle between the doorframe mounting plate and the base plate is 90°. The doorframe 3 is fixed to the doorframe mounting plate by welding, or at least two through holes are provided on both the doorframe 3 and the doorframe mounting plate, and after the bolts pass through the through holes on the doorframe 3 and the doorframe mounting plate, they are tightened to fix the doorframe 3 to the doorframe mounting plate.

[0022] The test workbench 1 provides an installation and working platform for the test device. Among them, the electrical control box 13, the doorframe fixing assembly 6 and the cylinder fixing bracket 12 are fastened or welded to the test workbench 1 by bolts. A protective plate or a protective net 15 is installed around the test workbench 1 to ensure the safety of the operators and the equipment.

[0023] Refer to the attached instruction manual Figure 1 , the U-shaped fixing bracket 9 is fastened or welded to the vehicle door 2, the cylinder fixing seat 8 is fastened or welded to the cylinder fixing bracket 12, the front end of the piston rod of the cylinder 7 is hinged to the U-shaped fixing bracket 9, so that the piston rod of the cylinder 7 and the U-shaped fixing bracket 9 can rotate relative to each other, and the rear end of the cylinder barrel of the cylinder 7 is hinged to the cylinder fixing seat 8, so that the cylinder barrel of the cylinder 7 and the cylinder fixing seat 8 can rotate relative to each other. The two air pipes 10 are respectively connected to the corresponding interfaces at the head end (corresponding to the rod chamber of the cylinder 7) and the tail end (corresponding to the rodless chamber of the cylinder 7) of the cylinder barrel of the cylinder 7. Inside the cylinder 7, compressed air is input into the rodless chamber through the air pipe 10 to exhaust the rod chamber. The pressure difference between the two chambers of the cylinder 7 acts on the piston to push the piston to move, so that the piston rod extends. When compressed air is input into the rod chamber through the air pipe 10 and the rodless chamber exhausts, the piston rod will retract. The rod chamber and the rodless chamber respectively control the two air pipes 10 to alternately intake and exhaust air through the electrical control box 13, and the piston and the piston rod can make a periodic reciprocating telescopic motion, thereby driving the vehicle door 2 to reciprocally rotate around the axis of the hinge 4 within a preset angle range. The preset angle range should be less than or equal to the maximum angle that the vehicle door limiting mechanism 5 limits the opening of the vehicle door.

[0024] In order to more realistically simulate the opening and closing conditions of the vehicle door 2 in the actual use state and meet the rhythm of the opening and closing of the vehicle door during the vehicle use process, a pneumatic pressure regulating valve is provided on the electrical control box 13. The pneumatic pressure regulating valve adjusts the air pressure of the compressed air to adjust the moving speed of the piston in the cylinder 7, that is, adjusts the telescopic speed of the piston rod, that is, the speed at which the vehicle door 2 reciprocally rotates around the axis of the hinge 4 within a preset angle range.

[0025] In order to control the door 2 to reciprocally rotate around the axis of the hinge 4 within a preset angular range, that is, to control the piston to move within a preset stroke, refer to the attached Figure 1 , on the front and rear parts outside the cylinder barrel of the cylinder 7, a magnetic switch 11 is respectively installed (installed by means of fixing with a steel belt, etc.). The distance between the two magnetic switches 11 is the stroke of the piston movement. The length of the piston movement stroke of the cylinder 7 is controlled by adjusting the relative position or relative distance of the two magnetic switches 11. When adjusting the positions of the two magnetic switches 11, it should be determined according to the maximum stroke of different door limit mechanisms 5. That is, when the door 2 reciprocally rotates around the axis of the hinge 4 within a preset angular range, the preset angular range should be less than or equal to the maximum angle that the door limit mechanism 5 restricts the door from opening;

[0026] The principle of the magnetic switch 11 controlling the length of the piston movement stroke of the cylinder 7 is as follows: The magnetic switch 11 is fixedly installed outside the cylinder barrel of the cylinder 7. The cylinder barrel of the cylinder 7 is made of a material with weak magnetic conductivity and strong magnetic isolation. A magnetic ring of a permanent magnet (rubber magnet) is installed on the piston of the non-magnetic cylinder 7. When the magnetic ring moving with the piston approaches the magnetic switch 11, the two reed pieces in the switch are magnetized and attract each other, and the contacts are closed; when the magnetic ring moves away from the magnetic switch 11, the reed pieces demagnetize and the contacts are disconnected. When the contacts are closed or disconnected, an electrical signal is sent (or the electrical signal disappears). The electrical signal is transmitted to the electrical control box 13, and the electrical control box 13 controls the corresponding solenoid valve to complete the switching action, so that the two air pipes 10 exchange air intake and exhaust, thereby changing the movement direction of the piston of the cylinder 7. That is, the positions where the two magnetic switches 11 are located are the two end points of the piston movement.

[0027] The action of the cylinder 7 needs to be jointly controlled by the electrical control box 13 and the magnetic switch 11 to achieve. The electrical control box 13 controls the pushing and pulling actions of the cylinder 7 through the two air pipes 10. The magnetic switch 11 controls the stroke of the piston movement, so that the telescopic speed and telescopic distance of the piston rod of the cylinder 7 are adjustable, which better meets the rhythm of the door opening and closing of the door assembly test, truly simulates the door opening and closing working conditions, and makes the test data more real and effective; at the same time, the start, stop, and emergency stop buttons on the electrical control box 13 can start and stop the operation of the equipment at any time.

[0028] In order to synchronously and real-time observe and monitor the states of the hinge 4 and the door limit mechanism 5 during the test, a camera assembly 14 is installed through a bracket. The bracket is fixed or welded to the test workbench 1 or the door frame fixing component 6 by bolts. The camera assembly 14 faces the hinge 4 and the door limit mechanism 5 for shooting. Its shooting area includes but is not limited to the door 2, the door frame 3, the hinge 4, and the door limit mechanism 5. The camera assembly 14 can timely detect the fracture time and fracture degree of the hinge 4 and the door limit mechanism 5 through monitoring and can synchronously save the monitoring video.

[0029] In order to achieve technical statistics on the number of times the door 2 is opened and closed during the test and to use it as the durability test data for the door limit mechanism and hinge assembly, refer to the attached manual. Figure 1 The electrical control box 13 also includes a counter, which counts the reciprocating motion cycle of the cylinder 7 piston by detecting the displacement sensor in the magnetic switch 11; specifically, the initial state of the car door 2 is closed. When the car door 2 is opened and closed once, the cylinder 7 piston will move from the magnetic switch 11 at the rear end of the cylinder 7 cylinder barrel to the magnetic switch 11 at the front end of the cylinder 7 cylinder barrel, and finally return to the position of the magnetic switch 11 at the rear end of the cylinder 7 cylinder barrel. Then, the displacement sensor in the magnetic switch 11 at the rear end of the cylinder 7 cylinder barrel detects two electrical signals, and the displacement sensor in the magnetic switch 11 at the front end of the cylinder 7 cylinder barrel detects one electrical signal. At this time, the counter counts once and displays it on the display screen of the counter.

[0030] In a preferred embodiment, in order to facilitate counting and ensure counting accuracy, the counter wiring harness can be extended, taken out separately from the electrical control box 13, and placed or fixed with a cable tie on the door frame fixing assembly 6, close to the door hinge 4 and the door limit mechanism 5 side. The position should be appropriate and not affect the opening and closing action of the door 2. The counter (specifically the display screen of the counter) is also included in the shooting area of the camera assembly 14. In this way, the working conditions of the hinge 4 and the door limit mechanism 5 and the counter counting status can be monitored synchronously, ensuring the accuracy of the counter counting.

[0031] The test method for the vehicle door limit mechanism and hinge durability test device described in the patent is as follows: first, the door frame 3 is fixed upright on the door frame fixing assembly 6 by welding or bolts, the vehicle door 2 is connected to the vehicle door limit mechanism 5 by a set of hinges 4 and installed on the door frame 3, the U-shaped fixing bracket 9 is fastened or welded to the vehicle door 2 by bolts, the cylinder fixing seat 8 is fastened or welded to the cylinder fixing bracket 12 by bolts, the front end of the piston rod of the cylinder 7 is hinged to the U-shaped fixing bracket 9 by a hinge shaft, the rear end of the cylinder barrel of the cylinder 7 is hinged to the cylinder fixing seat 8 by a hinge shaft, and two air pipes 10 are respectively connected to the corresponding interfaces at the head end and tail end of the cylinder barrel of the cylinder 7;

[0032] After adjusting the position of the two magnetic switches 11 relative to the cylinder 7, they are fixed to the front and rear parts of the outer side of the cylinder 7 with steel bands to adjust the extension and retraction distance of the piston rod of the cylinder 7. The air pressure of the compressed air is adjusted through the air pressure regulating valve on the electrical control box 13 to adjust the extension and retraction speed of the piston rod. The start button on the electrical control box 13 is pressed. At this time, the door 2 is driven by the cylinder 7 to reciprocate around the axis of the hinge 4 within a preset angle range and at a preset speed, and the durability test begins.

[0033] Meanwhile, the counter makes a technical count of the number of times the vehicle door 2 is opened and closed. The camera assembly 14 simultaneously monitors the working conditions of the hinge 4 and the door limiting mechanism 5 and the counting situation of the counter, ensuring the accuracy of the counter count.

[0034] It should be noted that: for the vehicle door 2 and the door frame 3 in this patent, either the finished vehicle doors and door frames used in vehicles can be selected, or simulated doors and simulated door frames can be used. Generally, enterprises will consider aspects such as cost savings, floor space, operability, safety, and whether the test effect can be achieved, and generally use simulated doors and simulated door frames. The simulated doors and simulated door frames will be simplified and reduced in different proportions compared to the finished vehicle doors and door frames used in vehicles, as long as the test requirements and test effects can be achieved; preferably, in order to conduct the durability limit test of the door limiting mechanism and the hinge, the weight of the simulated door can be set to be close to the weight of the finished vehicle door used in the vehicle.

[0035] At the same time, since the requirement of the durability test of the door limiting mechanism and the hinge is to only conduct the test assessment on a set of door limiting mechanisms and hinges, the test model uses a set of hinges and door limiting mechanisms. At the same time, the drawings of this patent are schematic diagrams of the test device model. During the actual test, only the manufactured simulated doors and simulated door frames that can be installed with hinges and door limiting mechanisms need to be considered for the test.

[0036] Obviously, it is possible to modify and / or add components to the above-mentioned door limiting mechanism and hinge durability test device and the corresponding method without departing from the scope and field of the present utility model.

[0037] Similarly, it is clear that although the present utility model has described the door limiting mechanism and hinge durability test device in detail, those skilled in the art will surely be able to obtain many other equivalent forms of the door limiting mechanism and hinge durability test device and the corresponding method. The door limiting mechanism and hinge durability test device and the corresponding method have the characteristics described in the claims, and therefore are all within the protection scope defined thereby.

Claims

1. A door limit mechanism and a hinge durability test device, characterized in that: It includes a car door (2), a door frame (3), an electrical control box (13), a door frame fixing assembly (6) and a car door driving assembly. The hinge (4) to be subjected to a durability test is connected and installed between the car door (2) and the door frame (3) together with the car door limiting mechanism (5). The door frame fixing assembly (6) is used to vertically fix the door frame (3). The car door driving assembly includes a cylinder (7), a cylinder fixing seat (8), a U-shaped fixing bracket (9), an air pipe (10) and a cylinder fixing bracket (12). The U-shaped fixing bracket (9) is fixedly connected to the car door (2). The cylinder fixing seat (8) is fixedly connected to the cylinder fixing bracket (12). The front end of the piston rod of the cylinder (7) is hinged to the U-shaped fixing bracket (9), and the rear end of the cylinder barrel of the cylinder (7) is hinged to the cylinder fixing seat (8). The two air pipes (10) are respectively connected to the corresponding interfaces at the head end and the tail end of the cylinder barrel of the cylinder (7). The electrical control box (13) controls the piston rod of the cylinder (7) to perform periodic reciprocating telescopic motion through the two air pipes (10), driving the car door (2) to reciprocally rotate around the axis of the hinge (4) within a preset angle range.

2. The door limit mechanism and hinge durability test device according to claim 1, characterized in that: The durability test device further includes a test workbench (1). The electrical control box (13), the door frame fixing assembly (6) and the cylinder fixing bracket (12) are fixedly installed on the test workbench (1). A protective plate or a protective net (15) is installed around the test workbench (1).

3. The door stop mechanism and hinge durability test device according to claim 2, characterized in that: The U-shaped fixing bracket (9) is fastened or welded to the car door (2) by bolts. The cylinder fixing seat (8) is fastened or welded to the cylinder fixing bracket (12) by bolts. The electrical control box (13), the door frame fixing assembly (6) and the cylinder fixing bracket (12) are all fastened or welded to the test workbench (1) by bolts.

4. The door limit mechanism and hinge durability test device according to claim 1, characterized in that: The door frame fixing assembly (6) includes a bottom plate, a column, an inclined stay bar and a door frame mounting plate. The column is fastened or welded to the bottom plate by bolts. The inclined stay bar is obliquely fixed between the bottom plate and the column by a bolt fastening or welding method. The door frame mounting plate is fastened or welded to the column, and the plane angle between the door frame mounting plate and the bottom plate is 90°. The door frame (3) is fastened or welded to the door frame mounting plate by bolts.

5. The door limit mechanism and hinge durability test device according to claim 1, characterized in that: A magnetic switch (11) is respectively installed at the front and rear parts outside the cylinder barrel of the cylinder (7). The length of the piston movement stroke of the cylinder (7) is controlled by adjusting the relative position or relative distance between the two magnetic switches (11).

6. The door position limiting mechanism and hinge durability test device according to claim 5, characterized in that: The electrical control box (13) includes a pneumatic pressure regulating valve and a counter. The pneumatic pressure is regulated by the pneumatic pressure regulating valve to adjust the moving speed of the piston in the cylinder (7). The counter counts the reciprocating motion cycle of the piston of the cylinder (7) through the displacement sensor in the magnetic switch (11).

7. The door limit mechanism and hinge durability test device according to claim 1, characterized in that: The durability test device further includes a camera assembly (14). The camera assembly (14) faces the hinge (4) and the car door limiting mechanism (5) for shooting, and is used for real-time observation and monitoring of the hinge (4) and the car door limiting mechanism (5) during the test.

8. The door stop mechanism and hinge durability test device according to claim 6, characterized in that: The durability test device further includes a camera assembly (14), and the camera assembly (14) is oriented to photograph the hinge (4) and the door limiting mechanism (5); the counter is arranged within the photographing area of the camera assembly (14), and the counter, the hinge (4) and the door limiting mechanism (5) can be observed and monitored synchronously and in real time.

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