Steering column adjusting mechanism holding force test bench

Abstract

The utility model discloses a steering column adjusting mechanism holding force test bench comprising a fixed support assembly and a test end assembly, the fixed support assembly is suitable for fixing a steering column and comprises a steering column lower installation support and a steering column upper installation support, and the distance between the steering column lower installation support and the steering column upper installation support is adjustable. The testing end assembly comprises a counter weight part capable of being rotationally adjusted and a testing end connecting part, the counter weight part and the steering wheel end of the steering column are coaxially arranged and fixedly connected in the circumferential direction, and the testing end connecting part is connected with the testing end of the equipment stretcher. The device is simple in overall structure and low in manufacturing cost, and can be directly connected with an existing equipment stretcher to test the retention force.

Description

Technical Field

[0001] The utility model relates to the technical field of steering column regulating mechanism testing, in particular to a steering column regulating mechanism retention force testing bench. Background Art

[0002] The holding force test of the steering column adjustment mechanism is an important evaluation item for the steering column and an important embodiment of the reliability of the steering column. The holding force determines that the steering column has a good ability to avoid falling off due to misoperation while ensuring impact collapse. All OEMs attach great importance to the holding force test of the steering column adjustment mechanism. The existing holding force test bench has a complex structure and high cost of use. It is not suitable for early research and development to cooperate with the equipment stretching machine to achieve the holding force test. Therefore, it is necessary to fully consider the manufacturing cost and design a steering column adjustment mechanism holding force test bench with a simpler structure. Utility Model Content

[0003] The utility model aims to propose a steering column adjustment mechanism retention force test bench in view of the deficiencies in the prior art. The overall structure is simple and the manufacturing cost is low. The utility model can be directly connected to an existing equipment stretching machine to achieve retention force testing.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] A steering column adjustment mechanism retention force test bench comprises a fixed bracket assembly and a test end assembly, wherein the fixed bracket assembly is suitable for fixing the steering column, and comprises a steering column lower mounting bracket and a steering column upper mounting bracket with adjustable spacing, wherein the test end assembly comprises a rotatably adjustable counterweight portion and a test end connecting portion, wherein the counterweight portion is coaxially arranged with the steering wheel end of the steering column and fixedly connected along the circumferential direction, and the test end connecting portion is connected to the test end of an equipment stretching machine.

[0006] Furthermore, the fixed bracket assembly also includes a tooling base and an intermediate base vertically fixedly installed on the tooling base, the bottom of the intermediate base is fixedly installed with a sample chassis, the steering column lower mounting bracket is fixedly installed on one end of the sample chassis, and the steering column upper mounting bracket is adjustably installed on the other end of the sample chassis along the horizontal direction.

[0007] Furthermore, a parallel waist-shaped through groove is provided at the other end of the sample chassis, a through hole corresponding to the waist-shaped through groove is provided on the mounting bracket on the steering column, and a locking bolt that passes through the waist-shaped through groove and is tightened is provided in the through hole.

[0008] Furthermore, the steering column lower mounting bracket includes a lower mounting base and a lower mounting support frame vertically arranged at both ends of the lower mounting base and arranged opposite to each other; the steering column upper mounting bracket includes an upper mounting base and an upper mounting support frame vertically arranged at both ends of the upper mounting base and arranged opposite to each other; the two ends of the steering column are respectively arranged between the two lower mounting support frames and the upper mounting support frame.

[0009] Furthermore, a first through hole and a second through hole are coaxially arranged at the center of the counterweight portion, the inner diameter of the second through hole is larger than the inner diameter of the first through hole, and an end of the first through hole close to the second through hole is provided with an internal spline matching the steering wheel end of the steering column.

[0010] Furthermore, an outwardly expanding horn hole is provided at one end of the first through hole away from the second through hole.

[0011] Furthermore, the outer peripheral surface of the counterweight portion is provided with an outwardly protruding annular boss.

[0012] Furthermore, the counterweight portion is provided with a relatively arranged connecting ear at one end away from the steering column, the test end connecting portion includes a connecting shaft and an upper fixing nut and a lower fixing nut threadedly mounted on the connecting shaft, the lower end of the connecting shaft is provided with a connecting pin passing through the two connecting ears, and the upper end is provided with a connecting hole arranged perpendicular to the axial direction of the connecting shaft.

[0013] By adopting the above technical solution, the utility model has the following beneficial effects:

[0014] (1) The utility model fixes the steering column by fixing the lower mounting bracket of the steering column and the upper mounting bracket of the steering column of the bracket assembly, and the counterweight part of the test end assembly simulates the steering wheel, and is connected to the equipment stretching machine through the test end connecting part, so as to realize the holding force test of the steering column adjustment mechanism. The overall structure is simple and the manufacturing cost is low. At the same time, the spacing between the lower mounting bracket of the steering column and the upper mounting bracket of the steering column is adjustable, which is convenient for connection with the steering column. At the same time, it can adapt to the testing of steering columns of more specifications and has better versatility.

[0015] (2) The utility model realizes pre-assembly of the lower mounting bracket of the steering column and the upper mounting bracket of the steering column into a whole through the tooling base and the intermediate base. At the same time, the setting of the tooling base improves the stability of the fixed bracket assembly and avoids tipping.

[0016] (3) The locking bolt of the utility model passes through the through hole and the waist-shaped through groove to realize the position adjustment of the mounting bracket on the steering column, which has a simple structure and is easy to adjust.

[0017] (4) The utility model provides two support frames for both the lower mounting bracket of the steering column and the upper mounting bracket of the steering column, thereby increasing the connection points with the steering column and improving the firmness of the installation.

[0018] (5) The test end assembly of the utility model is circumferentially fixed to the steering wheel end of the steering column by means of a spline connection, which is not only convenient for connection but also ensures coaxiality and improves the accuracy of the holding force test.

[0019] (6) The horn hole structure design of the first through hole of the utility model makes it easier for the steering wheel end of the steering column to be inserted into the first through hole.

[0020] (7) The utility model provides an annular boss so that the counterweight part can be effectively shortened when the weight requirement is met, so that its center of gravity is the same as the center of gravity after the steering wheel is actually installed, thereby improving the authenticity of the simulation and further improving the accuracy of the holding force.

[0021] (8) The test end connection part of the utility model realizes rotational connection with the counterweight part by means of a connecting pin penetrating the connecting ear, and is provided with a fixing nut for locking, thereby simulating different states of the steering column (highest position, lowest position, middle position), with a simple structure and convenient switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a structural schematic diagram of the fixed bracket assembly of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the test end assembly of the utility model;

[0026] Figure 4 It is a cross-sectional view of the test end assembly of the utility model.

[0027] The reference numerals in the accompanying drawings are:

[0028] Fixed bracket assembly 1, steering column lower mounting bracket 1-1, lower mounting base 1-1-1, lower mounting support frame 1-1-2, steering column upper mounting bracket 1-2, upper mounting base 1-2-1, upper mounting support frame 1-2-2, tooling base 1-3, intermediate base 1-4, sample chassis 1-5, waist-shaped through groove 1-5-1;

[0029] Test end assembly 2, counterweight part 2-1, first through hole 2-1-1, second through hole 2-1-2, annular boss 2-1-3, connecting ear 2-1-4, test end connecting part 2-2, connecting shaft 2-2-1, upper fixing nut 2-2-2, lower fixing nut 2-2-3, connecting hole 2-4. DETAILED DESCRIPTION

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] (Example 1)

[0032] like Figures 1 to 4 The steering column adjustment mechanism retention test bench shown includes a fixed bracket assembly 1 and a test end assembly 2, including a steering column lower mounting bracket 1-1 and a steering column upper mounting bracket 1-2 with adjustable spacing, which are used to fix the steering column. The test end assembly 2 includes a rotatably adjustable counterweight portion 2-1 and a test end connection portion 2-2. The counterweight portion 2-1 is coaxially arranged with the steering wheel end of the steering column and is fixedly connected along the circumference to simulate the weight of the steering wheel. The test end connection portion 2-2 is connected to the test end of the equipment stretching machine, thereby realizing the steering column adjustment mechanism retention test. The overall structure is simple and the manufacturing cost is low. At the same time, the spacing between the steering column lower mounting bracket 1-1 and the steering column upper mounting bracket 1-2 is adjustable, which is convenient for connection with the steering column. At the same time, it can adapt to the testing of steering columns of more specifications and has better versatility.

[0033] Specifically, the fixed bracket assembly 1 also includes a tooling base 1-3 and an intermediate base 1-4 vertically fixedly mounted on the tooling base 1-3, a sample chassis 1-5 is fixedly mounted on the bottom of the intermediate base 1-4, a steering column lower mounting bracket 1-1 is fixedly mounted on one end of the sample chassis 1-5, and a steering column upper mounting bracket 1-2 is adjustably mounted on the other end of the sample chassis 1-5 along the horizontal direction. The steering column lower mounting bracket 1-1 and the steering column upper mounting bracket 1-2 are pre-assembled into a whole by the tooling base 1-3 and the intermediate base 1-4. At the same time, the setting of the tooling base 1-3 improves the stability of the fixed bracket assembly 1, avoids tipping, and makes the structure more stable.

[0034] A parallel waist-shaped through groove 1-5-1 is provided at the other end of the sample chassis 1-5, and a through hole corresponding to the waist-shaped through groove 1-5-1 is provided on the mounting bracket 1-2 on the steering column. A locking bolt that passes through the waist-shaped through groove 1-5-1 and is tightened is provided in the through hole, thereby realizing the position adjustment of the mounting bracket on the steering column. The structure is simple and the adjustment is convenient.

[0035] The lower mounting bracket 1-1 of the steering column includes a lower mounting base 1-1-1 and lower mounting support frames 1-1-2 which are vertically arranged at both ends of the lower mounting base 1-1-1 and are arranged opposite to each other. The upper mounting bracket 1-2 of the steering column includes an upper mounting base 1-2-1 and upper mounting support frames 1-2-2 which are vertically arranged at both ends of the upper mounting base 1-2-1 and are arranged opposite to each other. The two ends of the steering column are respectively arranged between the two lower mounting support frames 1-1-2 and the upper mounting support frame 1-2-2, thereby increasing the connection points with the steering column and improving the firmness of the installation.

[0036] The center of the counterweight 2-1 is coaxially provided with a first through hole 2-1-1 and a second through hole 2-1-2. The inner diameter of the second through hole 2-1-2 is larger than the inner diameter of the first through hole 2-1-1. The end of the first through hole 2-1-1 close to the second through hole 2-1-2 is provided with an internal spline that matches the steering wheel end of the steering column. The spline connection method is used to achieve circumferential fixation with the steering wheel end of the steering column, which is not only convenient for connection, but also has the function of ensuring coaxiality and improving the accuracy of the holding force test. In order to facilitate the connection, the end of the first through hole 2-1-1 away from the second through hole 2-1-2 is provided with an outwardly expanding horn hole, which is more convenient for the steering wheel end of the steering column to be inserted into the first through hole 2-1-1. The outer peripheral surface of the counterweight 2-1 is provided with an outwardly protruding annular boss 2-1-3, so that the counterweight 2-1 can effectively shorten its length when meeting the weight requirements, so that its center of gravity is the same as the center of gravity after the steering wheel is actually installed, thereby improving the authenticity of the simulation and further improving the accuracy of the holding force.

[0037] The end of the counterweight part 2-1 away from the steering column is provided with a connecting ear 2-1-4 arranged opposite to each other. The test end connecting part 2-2 includes a connecting shaft 2-2-1 and an upper fixing nut 2-2-2 and a lower fixing nut 2-2-3 threadedly mounted on the connecting shaft 2-2-1. The lower end of the connecting shaft 2-2-1 is provided with a connecting pin 2-3 penetrating the two connecting ears 2-1-4, and the upper end is provided with a connecting hole 2-4 arranged perpendicular to the axial direction of the connecting shaft 2-2-1. The connecting pin 2-3 penetrates the connecting ears 2-1-4 to realize the rotation connection with the counterweight part 2-1, realize multi-angle adjustment, and is provided with a fixing nut to realize locking, thereby simulating different states of the steering column (highest position, lowest position, middle position), with a simple structure and convenient switching.

[0038] At the beginning of the test, the steering column is installed on the lower mounting bracket 1-1 of the steering column and the upper mounting bracket 1-2 of the steering column. The distance between the two is adjusted according to the size of the steering column mounting point and tightened with locking bolts. The steering wheel end of the steering column is connected to the counterweight part 2-1 through an internal spline and inserted into the end of the second through hole 2-1-2 with a nut. The test end connecting part 2-2 is connected to the equipment stretching machine end with a pin and locked with an upper fixing nut 2-2-2. At this time, the angle between the connecting shaft 2-2-1 and the counterweight part 2-1 is adjusted according to the state of the steering column (highest position, lowest position, middle position) and the lower fixing nut 2-2-3 is used for preliminary locking; adjust the equipment operating parameters, start the equipment to rise or fall according to the specified parameters, collect and record the holding force of the steering column adjustment mechanism.

[0039] In this embodiment, the steering column is fixed by fixing the lower mounting bracket of the steering column and the upper mounting bracket of the steering column of the bracket assembly, and the counterweight part of the test end assembly simulates the steering wheel. The equipment stretching machine is connected through the test end connecting part, so as to realize the holding force test of the steering column adjustment mechanism. The overall structure is simple and the manufacturing cost is low. At the same time, the distance between the lower mounting bracket of the steering column and the upper mounting bracket of the steering column is adjustable, which is convenient for connection with the steering column. At the same time, it can adapt to the testing of steering columns of more specifications and has better versatility.

[0040] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A test bench for the holding force of a steering column adjustment mechanism, characterized in that: It includes a fixed bracket assembly and a test end assembly. The fixed bracket assembly is suitable for fixing a steering column, and includes a lower mounting bracket of the steering column and an upper mounting bracket of the steering column with adjustable spacing. The test end assembly includes a rotatably adjustable counterweight part and a test end connecting part. The counterweight part is coaxially arranged with the steering wheel end of the steering column and fixedly connected along the circumferential direction. The test end connecting part is connected to the test end of the equipment stretching machine.

2. A steering column adjustment mechanism retention force test bench according to claim 1, characterized in that: The fixed bracket assembly also includes a tooling base and an intermediate base vertically fixedly installed on the tooling base, a sample chassis is fixedly installed on the bottom of the intermediate base, the steering column lower mounting bracket is fixedly installed on one end of the sample chassis, and the steering column upper mounting bracket is adjustably installed on the other end of the sample chassis along the horizontal direction.

3. A steering column adjustment mechanism retention force test bench according to claim 2, characterized in that: A parallel waist-shaped through groove is provided at the other end of the sample chassis, and a through hole corresponding to the waist-shaped through groove is provided on the mounting bracket on the steering column. A locking bolt that passes through the waist-shaped through groove and is tightened is provided in the through hole.

4. A steering column adjustment mechanism retention force test bench according to claim 1, characterized in that: The lower mounting bracket of the steering column includes a lower mounting base and lower mounting support frames which are vertically arranged at two ends of the lower mounting base and are arranged opposite to each other. The upper mounting bracket of the steering column includes an upper mounting base and upper mounting support frames which are vertically arranged at two ends of the upper mounting base and are arranged opposite to each other. The two ends of the steering column are respectively arranged between the two lower mounting support frames and the upper mounting support frame.

5. A steering column adjustment mechanism retention force test bench according to claim 1, characterized in that: The center of the counterweight part is coaxially provided with a first through hole and a second through hole, the inner diameter of the second through hole is larger than the inner diameter of the first through hole, and one end of the first through hole close to the second through hole is provided with an internal spline matching with the steering wheel end of the steering column.

6. A steering column adjustment mechanism retention force test bench according to claim 5, characterized in that: An outwardly expanding horn hole is provided at one end of the first through hole away from the second through hole.

7. A steering column adjustment mechanism retention force test bench according to claim 5, characterized in that: The outer peripheral surface of the counterweight part is provided with an annular boss protruding outwards.

8. A steering column adjustment mechanism retention force test bench according to claim 1, characterized in that: The counterweight part is provided with a connecting ear arranged opposite to the end away from the steering column, and the test end connecting part includes a connecting shaft and an upper fixing nut and a lower fixing nut threadedly mounted on the connecting shaft. The lower end of the connecting shaft is provided with a connecting pin passing through the two connecting ears, and the upper end is provided with a connecting hole arranged perpendicular to the axial direction of the connecting shaft.

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