Pulling-out force test board for rubber wire harness sheath of electric support rod

Abstract

The utility model relates to the technical field of testing devices, in particular to a pulling-out force test board for a rubber wire harness sheath of an electric supporting rod. Two guide columns are fixedly arranged on the base, an upper top plate is fixedly connected to the upper ends of the guide columns, a middle plate is arranged below the upper top plate, the two ends of the middle plate are slidably connected to the guide columns through bearings, a through hole is formed in the center of the upper top plate, and a lead screw is connected into the through hole of the upper top plate in a penetrating mode and fixed through a bearing. The bearing is rotatably connected with the lead screw, the lower end of the lead screw is connected to the upper end of the middle plate, the lower end of the middle plate is connected with the ejector rod, the base is further provided with a force sensor, a test plate is arranged above the force sensor, and the test plate is provided with a simulated automobile body metal plate hole. The pull-out force performance of the wire harness sheath can be accurately and rapidly reflected, the retention force between the wire harness sheath and a metal plate hole is ensured, the reliability and stability of an electric tail gate assembly in the operation process are greatly guaranteed, and the pull-out force detection device has the advantages of being simple in design and compact in structure and is flexible and convenient to disassemble and assemble when used.

Description

Technical Field

[0001] The utility model relates to a force testing platform, in particular to an electric support rod rubber harness sheath pull-out force testing platform. Background Art

[0002] As the degree of electrification and intelligence of automobiles increases, more and more models are equipped with electric tailgates. The electric support rod serves as its actuator to realize the automatic opening and closing of the tailgate. As an important component of the electric support rod, the wire harness sheath can protect the wire harness and seal the body sheet metal holes to ensure the normal operation of related electronic devices. When the electric support rod is assembled on the body, there needs to be sufficient holding force between the wire harness sheath and the body sheet metal hole. Therefore, the pull-out force performance of the wire harness sheath will directly affect the reliability and stability of the electric tailgate assembly.

[0003] The existing traditional methods for measuring the pull-out force are manual ejection or testing with the help of a universal mechanical tester and other auxiliary tools. When using the manual test method, the tester's strength is high, and manual operation cannot ensure the constant direction during the ejection process, which is prone to angle deviation and affects the accuracy of the test data. When using a universal mechanical tester, the disassembly and assembly of the auxiliary tools and the centering adjustment operations are relatively complicated, and the measurement program needs to be readjusted for each test, which takes a long time and consumes equipment resources.

[0004] The present invention utilizes a lead screw, a force sensor, a signal amplifier, etc., and relies on a mechanical structure to ensure that the direction of the ejection force is constant. The force requirement for manual operation is greatly reduced through lead screw transmission. At the same time, the assembly and disassembly of the measured parts are simple and quick, and a large number of measured parts can be quickly measured, and the measurement data is accurate and reliable. Utility Model Content

[0005] The utility model aims to solve the above defects and provides a test bench for the pull-out force of a rubber harness sheath of an electric strut.

[0006] In order to overcome the defects existing in the background technology, the technical solution adopted by the utility model to solve its technical problems is: this electric strut rubber wiring harness sheath pull-out force test bench includes a base, two guide columns are fixedly provided on the base, an upper top plate is fixedly connected to the upper end of the guide column, an intermediate plate is provided below the upper top plate, both ends of the intermediate plate are slidably connected to the guide column through bearings, a through hole is opened at the center of the upper top plate, a lead screw is passed through the through hole of the upper top plate and is fixed by a bearing, the bearing and the lead screw are rotatably connected, the lower end of the lead screw is connected to the upper end of the intermediate plate, and the lower end of the intermediate plate is connected to the ejection rod, a force sensor is also provided on the base, a test plate is provided above the force sensor, and a simulated body sheet metal hole is provided on the test plate.

[0007] According to another embodiment of the utility model, a connecting nut is further provided on the top end of the guide column, and the connecting nut is fixed above the upper top plate.

[0008] According to another embodiment of the utility model, the base is further provided with a round base for placing the force sensor, the round base is provided with an external thread, and the external thread is connected to the threaded hole below the force sensor.

[0009] According to another embodiment of the utility model, the force sensor is further connected to a test plate via a flange connector, the flange connector includes an upper flange and a lower flange, the upper flange and the lower flange are connected via a column, a threaded hole is provided on the bottom surface of the lower flange, the threaded hole is connected to the external thread above the force sensor, the upper flange is connected to a test plate, and the test plate is fixed to the upper flange via bolts.

[0010] According to another embodiment of the utility model, the upper flange is further provided with a through hole corresponding to the body sheet metal hole on the test plate, and one end of the connecting rubber harness sheath is sleeved below the body sheet metal hole.

[0011] According to another embodiment of the present invention, the force sensor is further connected to a signal amplifier.

[0012] According to another embodiment of the utility model, a rotating handle is further provided on the top of the lead screw.

[0013] The beneficial effects of the utility model are as follows: the electric strut rubber harness sheath pull-out force test bench can accurately and quickly reflect the pull-out force performance of the harness sheath, ensures the holding force between the harness sheath and the sheet metal hole, greatly guarantees the reliability and stability of the electric tailgate assembly during operation, has the characteristics of simple design and compact structure, and is flexible and convenient to disassemble and assemble during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Among them: 1. Screw, 2. Nut, 3. Upper plate, 4. Guide column, 5. Middle plate, 6. Ejector rod, 7. Test plate, 8. Rubber harness sheath, 9. Force sensor, 10. Base, 11. Upper flange, 12. Column, 13. Lower flange, 14. Round base, 15. Flange connector, 16. Measuring amplifier. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. The embodiments in the basic utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 As shown, the figure includes a base 10, on which two guide columns 4 are fixedly provided, and an upper top plate 3 is fixedly connected to the upper end of the guide column 4, and an intermediate plate 5 is provided below the upper top plate 3. Both ends of the intermediate plate 5 are connected to the guide column 4 through sliding bearings, and a through hole is opened at the center of the upper top plate 3. A lead screw 1 passes through the through hole of the upper top plate 3 and is fixed by a bearing. The bearing and the lead screw 1 are rotatably connected, and the lower end of the lead screw 1 is connected to the upper end of the intermediate plate 5, and the lower end of the intermediate plate 5 is connected to the ejector rod 6. A force sensor 9 is also provided on the base 10, and a test plate 7 is provided above the force sensor 9, and the test plate 7 is provided with a simulated body sheet metal hole. The lead screw 1 passes through the through hole at the center of the upper top plate 3. The upper top plate 3 and the guide column 4 are fixed. The two ends of the middle plate 5 are connected to the guide column 4 through sliding bearings. Under the rotation of the lead screw 1, it can slide up and down in cooperation with the guide column 4. The ejector rod is installed at the center of the middle plate 5. It ejects the rubber harness sheath 8 to generate downward pressure. The force sensor transmits the signal to the signal amplifier 16 and displays the corresponding force value data.

[0019] Among them, a connecting nut 2 is provided at the top end of the guide column 4 , and the connecting nut 2 is fixed above the upper top plate 3 .

[0020] Among them, the base 10 is provided with a round base 14 for placing the force sensor 9, and the round base 14 is provided with an external thread, which is connected to the threaded hole below the force sensor 9. Since the upper and lower ends of the force sensor 9 are provided with threaded holes, the round base 14 is provided on the base 10 for fixing the force sensor 9.

[0021] Among them, the upper part of the force sensor 9 is connected to the test board 7 through the flange connector 15, and the flange connector 15 includes an upper flange 11 and a lower flange 13. The upper flange 11 and the lower flange 13 are connected through a column 12. A threaded hole is provided on the bottom surface of the lower flange 13, and the threaded hole is connected to the external thread above the force sensor 9. The upper part of the upper flange 11 is connected to the test board 7, and the test board 7 is fixed to the upper flange 11 by bolts. The lower flange 13 is used to connect with the force sensor 9, and the upper plane of the upper flange 11 is used to connect with the test board 7. The ejector rod 6 is used to transmit the downward pressure at the rubber harness sheath 8 on the test board 7 to the force sensor 9 through the flange connector. At this time, the force sensor will sense the downward pressure and display the force value on the measuring amplifier.

[0022] The upper flange 11 is provided with a through hole corresponding to the body sheet metal hole on the test plate 7 , and one end of the rubber harness sheath 8 is sleeved below the body sheet metal hole.

[0023] The force sensor 9 is connected to a signal amplifier 16. In order to more clearly show the downward pressure of the ejector rod 6 at the rubber harness sheath 8 on the test plate 7, the signal amplifier 11 is used to display it.

[0024] A rotating handle is provided on the top of the lead screw 1, and the lead screw is rotated by rotating the handle to realize the downward movement of the middle plate at a certain speed.

[0025] Working principle: In actual use, one end of the rubber harness sheath is connected to the electric support rod, and the other end is matched with the body sheet metal hole. Its holding force ensures the sealing of the connection part. At the same time, it is also necessary to prevent it from being pulled out due to accidental contact or other external forces. Therefore, it is necessary to have sufficient holding force, and the holding force is quickly measured by the test bench. When performing the pull-out force test, the test bench simulates the state of the rubber harness sheath being assembled in the body sheet metal hole, that is, one end of the rubber harness sheath 8 is connected to the test board 7 with a simulated body sheet metal hole. When the test starts, the handle is rotated to rotate the lead screw to realize the downward movement of the middle plate 5 at a certain speed. The ejector rod 6 at the front end will apply downward pressure to the rubber harness sheath 8 to force it to have a tendency to come out. At this time, the force sensor 9 will sense the downward pressure and display the force value on the measuring amplifier 16.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric support rod rubber harness sheath pull-out force test bench, comprising a base (10), characterized in that: Two guide columns (4) are fixedly provided on the base (10), an upper plate (3) is fixedly connected to the upper ends of the guide columns (4), an intermediate plate (5) is provided below the upper plate (3), both ends of the intermediate plate (5) are slidably connected to the guide columns (4) via bearings, a through hole is provided at the center of the upper plate (3), a lead screw (1) passes through the through hole of the upper plate (3) and is fixed via a bearing, the bearing and the lead screw (1) are rotatably connected, the lower end of the lead screw (1) is connected to the upper end of the intermediate plate (5), and the lower end of the intermediate plate (5) is connected to an ejector rod (6), a force sensor (9) is further provided on the base (10), a test plate (7) is provided above the force sensor (9), and a simulated body sheet metal hole is provided on the test plate (7).

2. An electric strut rubber harness sheath pull-out force test bench as claimed in claim 1, characterized in that: A connecting nut (2) is provided at the top end of the guide column (4), and the connecting nut (2) is fixed above the upper top plate (3).

3. The electric strut rubber harness sheath pull-out force test bench according to claim 1, characterized in that: The base (10) is provided with a round base (14) for placing the force sensor (9), and the round base (14) is provided with an external thread, which is connected to a threaded hole below the force sensor (9).

4. The electric strut rubber harness sheath pull-out force test bench according to claim 1, characterized in that: The upper part of the force sensor (9) is connected to the test plate (7) via a flange connection (15), the flange connection (15) comprising an upper flange (11) and a lower flange (13), the upper flange (11) and the lower flange (13) being connected via a column (12), a threaded hole being provided on the bottom surface of the lower flange (13), the threaded hole being connected to the external thread on the upper part of the force sensor (9), the upper part of the upper flange (11) being connected to the test plate (7), and the test plate (7) being fixed to the upper flange (11) via bolts.

5. An electric strut rubber harness sheath pull-out force test bench as claimed in claim 4, characterized in that: The upper flange (11) is provided with a through hole corresponding to the body sheet metal hole on the test plate (7), and one end of the connecting rubber harness sheath (8) is sleeved below the body sheet metal hole.

6. The electric strut rubber harness sheath pull-out force test bench according to claim 1, characterized in that: The force sensor (9) is connected to a signal amplifier (16).

7. The electric strut rubber harness sheath pull-out force test bench according to claim 1, characterized in that: A rotating handle is provided on the top of the lead screw (1).

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