A durability test device for a vehicle hand brake system

Abstract

The application discloses a kind of endurance test device for vehicle hand brake system, it includes: installation bottom plate component, rotating shaft, first rotating arm, brake handle cylinder, second rotating arm, brake handle assembly and control device.Wherein, rotating shaft is rotatably arranged on installation bottom plate component by bearing seat;The tail end of first rotating arm is connected with rotating shaft;The cylinder stem of brake handle cylinder is hinged with the head of first rotating arm, and the brake handle cylinder is arranged on installation bottom plate component by mounting hinge;Second rotating arm, its head is connected with brake handle assembly on vehicle, and its tail end is connected with rotating shaft;Control device is connected with brake cylinder handle;Wherein, the control device controls brake handle cylinder action, to rotate around the axis of rotating shaft by first rotating arm and rotating shaft, and then drive second rotating arm synchronous rotation around the axis of rotating shaft, so that brake handle assembly carries out brake handle pull-up and drop-down simulation action.

Description

Technical Field

[0001] The present invention relates to a testing tool, in particular to a durability testing device for a vehicle. Background Art

[0002] As we all know, in the automotive industry, in order to have a good control over the quality of vehicles, R&D personnel usually need to conduct quality inspections on important components of the vehicle before the car leaves the factory and is put on the consumer market to ensure that the quality is qualified.

[0003] In the process of quality inspection of the whole vehicle, it is generally necessary to conduct durability tests on parts such as the handbrake handle, handbrake button, handbrake cable, etc. in the vehicle's handbrake system to assess the reliability of related parts.

[0004] In the existing technology, the traditional technical solution is to install the vehicle's hand brake system on a test bench and try to simulate the installation conditions of the entire vehicle on the test bench. Its structure is complex, the device is large, and it can only be as close to the actual situation as possible, and it cannot restore the actual vehicle working conditions 100%. Figure 1 and Figure 2 The working principle of the test bench in the prior art, which uses a cylinder to control the rotational movement of the hand brake handle, is schematically shown.

[0005] In addition, from Figure 1 and Figure 2 It is easy to see that the current technical solutions all use the brake handle cylinder 1 to directly pull the handbrake handle 2. Since the position of the brake handle cylinder 1 is fixed, when the cylinder rod 11 of the brake handle cylinder 1 drives the handbrake handle 2 to rotate, the force applied to the handbrake handle 2 varies, which is obviously inconsistent with the actual user experience.

[0006] It can be seen from this that, in fact, the most accurate test method should be carried out on the whole vehicle. At this time, the installation state is the actual state, and the test results are closer to the actual situation.

[0007] Based on this, in order to achieve the above requirements, the present invention proposes a durability test device for a vehicle hand brake system, which has a simple structure, is easy and quick to operate, and can perform durability tests on parts in the hand brake system on the entire vehicle, ensuring the accuracy of the test results. Summary of the Invention

[0008] The purpose of the present invention is to provide a durability test device for a vehicle hand brake system. The durability test device has a simple structure and is easy and quick to operate. It can perform durability tests on parts in the hand brake system of a whole vehicle, ensuring the accuracy of the test results.

[0009] To achieve the above objectives, the present invention provides a durability test device for a vehicle hand brake system, which is connected to a brake handle assembly on the vehicle. The durability test device includes:

[0010] Install the base plate assembly;

[0011] a rotating shaft rotatably mounted on the mounting base assembly via a bearing seat;

[0012] a first rotating arm, a tail end of which is connected to the rotating shaft;

[0013] A brake handle cylinder, whose cylinder rod is hinged to the head end of the first rotating arm, and the brake handle cylinder is mounted on the mounting base assembly via a mounting hinge;

[0014] a second rotating arm, the head end of which is connected to the brake handle assembly on the vehicle, and the tail end of which is connected to the rotating shaft;

[0015] a control device connected to the brake handle cylinder;

[0016] Among them, the control device controls the action of the brake handle cylinder to drive the second rotating arm to rotate synchronously around the axis of the rotating shaft through the rotation of the first rotating arm and the rotating shaft around the axis of the rotating shaft, so that the brake handle assembly performs a simulated action of pulling up and lowering the brake handle.

[0017] In the above technical solution of the present invention, the inventors adopted a new concept to design a durability test device for a vehicle hand brake system, which can solve many problems existing in the current existing technical solutions for durability testing of vehicle hand brake systems.

[0018] Different from traditional technical solutions, this durability testing device has a simple structure and is easy and quick to operate. It can perform durability tests on the brake handle in the hand brake system of the entire vehicle, ensuring the accuracy of the test results.

[0019] In actual use, the durability test device can be directly set inside the whole vehicle to carry out a durability test on the brake handle in the hand brake system of the whole vehicle. By utilizing the brake handle cylinder, it can drive the first rotating arm and the rotating shaft to rotate around the axis of the rotating shaft, and then drive the second rotating arm to rotate synchronously around the axis of the rotating shaft, so that the brake handle assembly can perform a simulated action of pulling up and lowering the brake handle, ensuring the consistency of the operating force during the operation of the brake handle.

[0020] Furthermore, in the durability test device for a vehicle hand brake system according to the present invention, the mounting base assembly includes:

[0021] A mounting base plate for placement inside a vehicle;

[0022] An adjustment base plate is arranged above the mounting base plate. At least three adjustment bolts located at different mounting points are arranged between the adjustment base plate and the mounting base plate. The adjustment bolts adjust the height and inclination of the adjustment base plate relative to the mounting base plate.

[0023] In the above technical solution of the present invention, the height and inclination of the adjusting base plate relative to the mounting base plate can be adjusted. This setting can make the applicability of the durability test device more extensive to adapt to different vehicle models and meet various practical application needs.

[0024] Furthermore, in the durability test device for a vehicle hand brake system according to the present invention, the mounting base assembly further comprises:

[0025] A bottom plate fixing block, which is fixedly connected to the mounting bottom plate, and a waist hole is opened on the bottom plate fixing block;

[0026] A fixing bolt is passed through the waist hole to adjustably arrange the mounting base plate inside the vehicle.

[0027] Furthermore, in the durability test device for the vehicle hand brake system described in the present invention, the mounting base assembly also includes: a brake handle cylinder mounting arm, which is fixed to the mounting base, and the brake handle cylinder is arranged on the brake handle cylinder mounting arm through a mounting hinge.

[0028] Furthermore, in the durability testing device for a vehicle hand brake system of the present invention, a spirit level is also provided on the adjustment base plate.

[0029] In the above technical solution of the present invention, a spirit level may be further provided on the adjustment base plate, and the spirit level may be used to determine whether the adjustment base plate is in a horizontal state, so that the operator can adjust the adjustment base plate to a horizontal state when necessary.

[0030] Furthermore, in the durability test device for the vehicle hand brake system described in the present invention, a hole is provided at the axis center of the first end of the rotating shaft, and an axially extending centering rod is inserted into the hole. Correspondingly, the brake handle assembly is also provided with a centering hole for centering with the centering rod.

[0031] In the above technical solution of the present invention, after inserting the centering rod into the centering hole of the brake handle assembly, it is possible to check whether the axis center of the rotating shaft is aligned with the rotation center of the brake handle assembly, thereby ensuring that the axis center of the rotating shaft is aligned with the rotation center of the brake handle assembly.

[0032] Furthermore, in the durability test device for the vehicle hand brake system described in the present invention, the second rotating arm is fixedly connected to the brake handle assembly through a brake handle fixing block, and a force sensor is provided between the brake handle fixing block and the brake handle assembly to measure the tension applied to the brake handle assembly, and the force sensor is data-connected to the control device.

[0033] Furthermore, the durability test device for a vehicle hand brake system described in the present invention also includes: a button cylinder, which is fixedly connected to the second rotating arm through a button cylinder fixing block, and the cylinder rod of the button cylinder presses the button at the end of the brake handle assembly.

[0034] Furthermore, the durability test device for a vehicle hand brake system of the present invention further includes a pedal cylinder connected to the mounting base plate, and a cylinder rod of the pedal cylinder presses the vehicle brake pedal.

[0035] Furthermore, in the durability test device for a vehicle hand brake system described in the present invention, the pedal cylinder is arranged on a pedal cylinder mounting arm through a pedal cylinder fixing block, and the pedal cylinder mounting arm is fixedly connected to the mounting base plate.

[0036] In the existing technology, the traditional technical solution is to install the vehicle's hand brake system on a test bench and try to simulate the installation conditions of the entire vehicle on the test bench. Its structure is complex, the device is large, and it can only be as close to the actual situation as possible, and cannot restore the actual vehicle 100%.

[0037] Compared with the prior art, the durability test device for a vehicle hand brake system according to the present invention has the following advantages and beneficial effects:

[0038] (1) The overall concept of the durability test device described in the present invention is to be carried out on the whole vehicle. When the durability test is carried out on the hand brake handle, hand brake button, hand brake cable and other parts in the hand brake system, the installation and movement of the parts are completely consistent with the actual situation, thereby ensuring the accuracy of the test results.

[0039] (2) When the durability test device of the present invention is specifically installed, its mounting base assembly can be installed using the mounting holes and positions of the driver's seat without damaging the vehicle body.

[0040] (3) In some preferred embodiments, the mounting base assembly of the present invention may include a mounting base and an adjustment base, and the height and inclination of the adjustment base relative to the mounting base can be adjusted. This arrangement can make the durability test device more widely applicable to different vehicle models.

[0041] (4) In the durability test device of the present application, the inventor ensures the consistency of the operating force during the operation of the brake handle by the special rotating structure of the actuator composed of the first rotating arm, the rotating shaft, the second rotating arm and the brake handle assembly.

[0042] (5) In some preferred embodiments, the durability test device of the present application is further designed with a centering scheme, in which a centering rod is designed on the rotating shaft, and a centering hole for centering with the centering rod is also provided on the brake handle assembly. This design ensures that the rotation center of the rotating shaft is completely consistent with the rotation center of the brake handle assembly.

[0043] (6) In some preferred embodiments, the durability test device of the present application is further designed with an operating mechanism of the brake pedal, which can ensure the normal state of the hand brake cable during the test. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 and Figure 2 The working principle of the prior art test bench using a cylinder to control the rotating movement of the hand brake handle is schematically shown.

[0045] Figure 3 The structure front view of the durability test device for vehicle hand brake system of the present application in one embodiment.

[0046] Figure 4 The structure top view of the durability test device for vehicle hand brake system of the present application in one embodiment.

[0047] Figure 5 The working principle of the durability test device for vehicle hand brake system of the present application is schematically shown. Figure 3-Figure 4 The test flow chart of the durability test device for vehicle hand brake system of the present application is schematically shown. DETAILED DESCRIPTION

[0048] The durability test device for vehicle hand brake system of the present application will be further explained and described below in conjunction with the drawings and specific embodiments, however, the explanation and description do not constitute undue limitations on the technical solutions of the present application.

[0049] Figure 3 The structure front view of the durability test device for vehicle hand brake system of the present application in one embodiment.

[0050] Figure 4 The structure top view of the durability test device for vehicle hand brake system of the present application in one embodiment.

[0051] As Figure 3 and Figure 4As shown, in this embodiment, the durability test device of the present invention may include: a mounting base assembly 3, a rotating shaft 4, a first rotating arm 5, a brake handle cylinder 6, a second rotating arm 7 and a control device.

[0052] Among them, by utilizing the above-mentioned mounting base plate assembly 3, the durability test device can be effectively set up inside the vehicle, so that the test can be carried out under the condition of the entire vehicle, and the test results that are closer to the actual situation can be obtained.

[0053] See Figure 3 and Figure 4 It can be seen that in the present invention, the above-mentioned mounting base assembly 3 can specifically include: a mounting base 31, an adjustment base 32, a base fixing block 33 and a brake handle cylinder mounting arm 34. Among them, the mounting base 31 can be set inside the vehicle, and four base fixing blocks 33 are fixedly set around the mounting base 31. These four base fixing blocks 33 are correspondingly provided with waist holes 331 (such as Figure 4 shown).

[0054] During actual use, the operator can select four fixing bolts (not shown in the figure) to pass through the corresponding waist holes 331 on each base plate fixing block 33, and adjustably set the installation base plate 31 inside the vehicle, and the positions of these four fixing bolts in the corresponding waist holes 331 can be adjusted.

[0055] Accordingly, see Figure 3 It can be seen that in this embodiment, the adjustment base plate 32 can be correspondingly arranged above the installation base plate 31, and the two can be connected by Figure 4 At the same time, three adjusting bolts 35 located at different mounting points are provided between the adjusting base plate 32 and the mounting base plate 31. These three adjusting bolts 35 can be provided at the corresponding Figure 4 The three threaded holes 321 on the adjustment base plate 32 are shown.

[0056] By adjusting the threaded connection between the three adjustment bolts 35 and the threaded holes 321, the operator can adjust the height and inclination of the adjustment base plate 32 relative to the mounting base plate 31 based on the adjustment bolts 35, so that the durability test device described in the present invention can meet different needs in actual application.

[0057] In addition, in this embodiment, a level 322 is further provided on the adjustment base plate 32 , and the level 322 can be used to determine whether the adjustment base plate 32 is in a horizontal state, so that the operator can adjust the adjustment base plate 32 to a horizontal state when necessary.

[0058] Also, see further Figure 3It is not difficult to see that in the mounting base assembly 3 described in the present invention, the brake handle cylinder mounting arm 34 is fixedly set on the mounting base 31, and the brake handle cylinder 6 can be set on the brake handle cylinder mounting arm 34 through the cylinder mounting hinge 62 to achieve articulation with the brake handle cylinder mounting arm 34.

[0059] After completing the installation and setting of the above-mentioned components for the mounting base assembly 3, the rotating shaft 4, the first rotating arm 5, the brake handle cylinder 6, the second rotating arm 7 and the control device in the durability test device described in the present invention can be further set.

[0060] like Figure 4 As shown, in the present invention, the rotating shaft 4 can be rotatably mounted on the mounting base 31 of the mounting base assembly 3 using two bearing seats 10, so that the rotating shaft 4 can rotate about its own axis. A hole is also provided at the axis of the head end of the rotating shaft 4, into which an axially extending centering rod 41 is inserted. The brake handle assembly 8 on the vehicle also has a centering hole for aligning with the centering rod 41.

[0061] In actual application, the centering rod 41 can be inserted into the centering hole of the brake handle assembly 8 to check whether the axis center of the rotating shaft 4 is aligned with the rotation center of the brake handle assembly 8. If not, the height and inclination of the adjustment base plate 32 relative to the mounting base plate 31 can be adjusted by adjusting the bolt 35 to ensure that the axis center of the rotating shaft 4 is aligned with the rotation center of the brake handle assembly 8.

[0062] Further reading Figure 4 It can be seen that in the present invention, correspondingly, the tail ends of the first rotating arm 5 and the second rotating arm 7 are connected to the rotating shaft 4, and the head end of the second rotating arm 7 can be fixed by the brake handle fixing block 81 (such as Figure 4 As shown) realizes fixed connection with the brake handle assembly 8.

[0063] At the same time, a force sensor can be further provided between the brake handle fixing block 81 and the brake handle assembly 8. The force sensor can effectively measure the pulling force applied to the brake handle assembly 8. This force sensor can be data-connected to the aforementioned control device to transmit the measured pulling force data to the control device in real time, making it easier for the operator to obtain the aforementioned pulling force information in real time.

[0064] Accordingly, if Figure 3As shown, in this embodiment, the cylinder rod 61 of the brake handle cylinder 6, which is mounted on the brake handle cylinder mounting arm 34 via a cylinder mounting hinge 62, is hingedly connected to the head end of the first rotating arm 5. When the brake handle cylinder 6 is in operation, its cylinder rod 61 can effectively drive the first rotating arm 5 and the rotating shaft 4 to rotate around the axis of the rotating shaft 4, and at the same time, it also drives the second rotating arm 7 to rotate synchronously around the axis of the rotating shaft 4, thereby further driving the brake handle assembly 8 to perform the simulated action of pulling up and lowering the brake handle.

[0065] It can be seen that in the present invention, the inventor ensures the consistency of the operating force during the operation of the brake handle through the rotating structure composed of the first rotating arm 5, the rotating shaft 4, the second rotating arm 7 and the brake handle assembly 8.

[0066] Accordingly, in the present invention, the durability test device is further provided with a control device, which can be connected to the brake handle cylinder 6. By using the control device, the operator can control the movement of the cylinder rod 61 in the brake handle cylinder 6.

[0067] In addition, it should be noted that in this embodiment, the durability test device described in the present invention is also provided with a button cylinder 9, which can be fixedly connected to the second rotating arm 7 through two button cylinder fixing blocks 91. At the same time, the button cylinder 9 can be connected to the control device. When the control device controls the button cylinder 9 to move, the cylinder rod of the button cylinder 9 can press the button 82 at the end of the brake handle assembly 8 to perform a durability test of the hand brake button.

[0068] In addition, in this embodiment, the durability testing device of the present invention is further provided with a pedal cylinder 12. The pedal cylinder 12 can be mounted on a pedal cylinder mounting arm 13 fixedly connected to the mounting base 31 using two pedal cylinder fixing blocks 121. The pedal cylinder 12 can also be connected to a control device. When the control device controls the operation of the pedal cylinder 12, the cylinder rod of the pedal cylinder 12 can step on the vehicle brake pedal 14, thereby adjusting the left and right balance of the handbrake cable.

[0069] Figure 5 The above-mentioned Figure 3-Figure 4 The durability test device shown is a test flow chart for performing durability testing on the hand brake handle.

[0070] like Figure 5 As shown, in actual use of the above Figure 3-Figure 4When performing a durability test on a vehicle's handbrake system, the operator can use the mounting holes and position of the driver's seat to install the durability test device. After installing the durability test device, the operator needs to align the centering rod 41 of the rotating shaft 4 with the centering hole in the brake handle assembly 8 and then check the initial state of the durability test device.

[0071] After determining that there is no problem with the initial state, the operator can use the control device to control the movement of the brake handle cylinder 6, so as to drive the second rotating arm 7 to rotate synchronously around the axis of the rotating shaft 4 through the rotation of the first rotating arm 5 and the rotating shaft 4, thereby making the brake handle assembly 8 perform a simulated action of pulling up and lowering the brake handle.

[0072] During this process, the force sensor can measure the pulling force applied to the brake handle assembly 8 in real time, and transmit the detected information to the control device via data so that the operator can observe it in real time.

[0073] When the brake handle is pulled up, there are two judgment conditions, namely: one is that the pulling force detected by the force sensor reaches the set value; the other is that a time threshold is set to determine whether the pulling force applied to the brake handle assembly 8 needs to be adjusted. If the pulling force detected by the force sensor does not reach the set value within the set time threshold, it means that the air pressure in the brake handle cylinder 6 is too low and the parameters need to be adjusted until the pulling force reaches the set value every time.

[0074] Accordingly, under the action of the pulling force, the brake handle assembly 8 simulates the action of pulling the brake handle until the brake handle is pulled to the high position. In this embodiment, after the brake handle is pulled to the high position, a three-position five-way reversing valve with a neutral pressure relief is required to allow the brake handle to naturally fall back onto the ratchet wheel when in the high position to avoid impact on parts.

[0075] At this time, the brake handle cylinder 6 needs to be unloaded through a three-position five-way reversing valve with mid-position air release to ensure that no downward impact force is generated on the brake handle. The brake handle is lowered by the elastic force of the connecting cable, so that the pawl inside the brake handle gently falls on the ratchet.

[0076] During the process of lowering the brake handle, when the pawl inside the brake handle gently falls on the ratchet, it is necessary to pull up the brake handle, and then control the cylinder rod of the button cylinder 9 through the control device to press the button 82 at the end of the brake handle assembly 8 to release the pawl, so that the brake handle can be lowered and the parking brake can be released.

[0077] In addition, because the two brake cables installed under the vehicle chassis may become uneven on the left and right sides after the brake handle is pulled up and lowered for a period of time, in order to ensure the accuracy of the test, after the brake handle is pulled up and lowered a certain number of times, it is necessary to control the pedal cylinder 12 through the control device to step on the vehicle brake pedal 14, so that the left and right brake cables can reach a balance.

[0078] It should be noted that the prior art within the scope of protection of the present invention is not limited to the embodiments given in this application document. All prior art that does not contradict the solutions of the present invention, including but not limited to prior patent documents, prior publications, prior public uses, etc., can be included in the scope of protection of the present invention.

[0079] In addition, the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.

[0080] It should also be noted that the above-listed embodiments are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above-listed embodiments. Similar variations or modifications that can be directly derived from or easily conceived by those skilled in the art based on the disclosure of the present invention should fall within the scope of protection of the present invention.

Claims

1. A durability test device for a vehicle hand brake system, which is connected to the brake handle assembly on the vehicle, characterized in that: The durability test device comprises: Install the base plate assembly; A rotating shaft rotatably mounted on the mounting base assembly via a bearing seat; a first rotating arm, a tail end of which is connected to the rotating shaft; a brake handle cylinder, the cylinder rod of which is hinged to the head end of the first rotating arm, and the brake handle cylinder is mounted on the mounting base assembly via a mounting hinge; a second rotating arm, the head end of which is connected to the brake handle assembly on the vehicle, and the tail end of which is connected to the rotating shaft; a control device connected to the brake handle cylinder; A hole is further provided at the axis center of the head end of the rotating shaft, and an axially extending centering rod is inserted into the hole. Correspondingly, a centering hole for centering with the centering rod is also provided on the brake handle assembly; Among them, the control device controls the action of the brake handle cylinder to drive the second rotating arm to rotate synchronously around the axis of the rotating shaft through the rotation of the first rotating arm and the rotating shaft around the axis of the rotating shaft, so that the brake handle assembly performs a simulated action of pulling up and lowering the brake handle.

2. The durability test device for a vehicle hand brake system according to claim 1, characterized in that: The mounting base assembly comprises: A mounting base plate for placement inside a vehicle; An adjustment base plate is arranged above the mounting base plate. At least three adjustment bolts located at different mounting points are arranged between the adjustment base plate and the mounting base plate. The adjustment bolts adjust the height and inclination of the adjustment base plate relative to the mounting base plate.

3. The durability test device for a vehicle hand brake system according to claim 2, characterized in that: The mounting base assembly further comprises: A bottom plate fixing block, which is fixedly connected to the mounting bottom plate, and a waist hole is opened on the bottom plate fixing block; A fixing bolt is passed through the waist hole to adjustably arrange the mounting base plate inside the vehicle.

4. The durability test device for a vehicle hand brake system according to claim 2, characterized in that: The mounting base assembly further comprises a brake handle cylinder mounting arm, which is fixedly mounted on the mounting base, and the brake handle cylinder is mounted on the brake handle cylinder mounting arm via a mounting hinge.

5. The durability test device for a vehicle hand brake system according to claim 2, characterized in that: The adjustment base plate is also provided with a level.

6. The durability test device for a vehicle hand brake system according to claim 1, characterized in that: The second rotating arm is fixedly connected to the brake handle assembly through a brake handle fixing block. A force sensor is provided between the brake handle fixing block and the brake handle assembly to measure the pulling force applied to the brake handle assembly. The force sensor is data-connected to the control device.

7. The durability test device for a vehicle hand brake system according to claim 1, characterized in that: Also includes: The button cylinder is fixedly connected to the second rotating arm through a button cylinder fixing block, and the cylinder rod of the button cylinder presses the button at the end of the brake handle assembly.

8. The durability test device for a vehicle hand brake system according to claim 1, characterized in that: The utility model also includes a pedal cylinder connected to the mounting base plate, wherein a cylinder rod of the pedal cylinder presses a brake pedal of the vehicle.

9. The durability test device for a vehicle hand brake system according to claim 8, characterized in that: The pedal cylinder is arranged on the pedal cylinder mounting arm through a pedal cylinder fixing block, and the pedal cylinder mounting arm is fixedly connected to the mounting base plate.

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