Torsion testing equipment for cam of steering wheel

Abstract

The utility model relates to the technical field of steering wheel cam test equipment, in particular to steering wheel cam torsion test equipment, which comprises a torque wrench body and a screwdriver bit, a sleeve is fixed on the surface of a mounting seat, a spring plate is fixed on the inner wall of the sleeve, a connecting rod is movably inserted on the surface of the spring plate, a push plate is fixed at one end of the connecting rod, and the push plate is fixed on the other end of the connecting rod. A button plate is fixed at the other end of the connecting rod; the electric screwdriver has the beneficial effects that a push plate pushes a limiting rod out of a limiting hole, so that the limiting rod completely retracts into a limiting rod mounting groove, then a driving head can be pulled out from a mounting seat fixed on the surface of an old screwdriver head, then the limiting rod is completely pressed into the limiting rod mounting groove by hands again, a limiting spring is compressed, and the driving head is driven to rotate. And then the driving head is inserted into a mounting seat fixed on the surface of a new bit, one end of the limiting rod is pushed into the limiting hole again, replacement of the bit can be completed, a third-party tool is not needed in the whole replacement process, and the replacement is simple and rapid.

Description

TECHNICAL FIELD

[0001] The utility model relates to steering wheel cam testing equipment field, concretely is a kind of steering wheel cam torsion testing equipment. BACKGROUND

[0002] Steering wheel cam torsion testing equipment is a kind of instrument specially used to evaluate the torque performance of cam mechanism in automobile steering system, in the automobile detection maintenance industry, the test of steering wheel cam torsion is usually completed by torque wrench, and it can be used to detect the starting torque of steering wheel in static state.

[0003] In prior art, torque wrench is also called torque wrench or moment wrench, which is composed of handle, torque adjusting mechanism, driving head (square tenon interface) and bit head, during testing, ensure that vehicle is parked on horizontal ground, pull handbrake, use wheel block to fix tire, prevent vehicle from moving, return steering wheel, turn off engine to disconnect power supply of electronic power steering system, if steering wheel has airbag, need to disassemble safely according to requirements of maintenance manual, select adapter (such as three-jaw or four-jaw joint) according to steering wheel size, ensure that torque wrench is stably connected with steering wheel, confirm that torque range of torque wrench covers expected range, use standard weight or calibration instrument to zero torque wrench or verify accuracy, align adapter with center of steering wheel, uniformly tighten fixing claw, avoid measurement error caused by offset, ensure that wrench is perpendicular to plane of steering wheel, avoid lateral force interference, gently shake wrench to eliminate internal mechanical clearance, press "zero" key, rotate wrench clockwise or counterclockwise at constant rate (about 5 ° / s), when steering wheel starts to rotate, record peak value displayed by torque wrench, measure at least 3 times, take average value to reduce random error, record torque value, steering wheel rotation direction (left / right) and environmental temperature (affecting viscosity of lubricating grease) of each measurement.

[0004] The installation between torque wrench body and bit head is usually that driving head is installed on torque wrench body, mounting seat is fixed on bit head, driving head is inserted into mounting seat, limiting hole is reserved on mounting seat, limiting rod installation slot is opened on driving head, one end of limiting rod is movably inserted into limiting rod installation slot, the other end of limiting rod is inserted into limiting hole, limiting spring is also fixed in limiting rod installation slot, limiting rod is completely pressed into limiting rod installation slot by using screwdriver or other slender tool, old bit head can be disassembled, new bit head can be installed on torque wrench body, so that the replacement of bit head is realized, different bit heads are replaced according to the groove shape arranged on the surface of different adapters, so that the normal test is ensured.

[0005] However, the disassembly and assembly between torque wrench body and bit head in prior art need the intervention of screwdriver or other slender third-party tool, once the slender third-party tool cannot be found during testing, torque wrench cannot be replaced, and then the progress of test will be affected. Utility model content

[0006] The utility model discloses a steering wheel cam torsion test equipment to solve the problem in the background art.

[0007] To realize above-mentioned purpose, the utility model provides the following technical scheme: a steering wheel cam torsion test equipment, include: torque wrench body and batch head, the surface of torque wrench body is fixed with drive head, the surface of batch head is fixed with mounting seat, drive head is inserted in mounting seat, the surface of mounting seat is fixed with sleeve, the inner wall of sleeve is fixed with spring plate, the surface of spring plate is inserted with connecting rod, one end of connecting rod is fixed with push plate, the other end of connecting rod is fixed with button plate.

[0008] Preferably, the surface of the drive head is provided with a limiting rod mounting groove, the surface of the mounting seat is provided with a limiting hole, one end of the limiting rod is movably inserted into the limiting rod mounting groove, and the other end of the limiting rod is movably inserted into the limiting hole.

[0009] Preferably, one end of the limiting spring is fixed to the inner wall of the limiting rod mounting groove, and the other end of the limiting spring is fixed to the surface of the limiting rod.

[0010] Preferably, the limiting rod mounting groove is in a circular groove structure, the limiting hole is in a circular hole structure, and the sleeve is in a circular ring column structure, and the inner ring diameter of the sleeve is the same as the diameters of the limiting rod mounting groove and the limiting hole.

[0011] Preferably, the part of the drive head inserted into the mounting seat is in a hexagonal prism structure, and the groove body shape of the mounting seat is matched with the drive head.

[0012] Preferably, the rod body of the connecting rod is sleeved with a button spring, one end of the button spring abuts against the surface of the spring plate, and the other end of the button spring abuts against the surface of the button plate.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] When the torque wrench body needs to be replaced with a batch head, the button plate is pressed towards the depth of the sleeve, the movement of the button plate pushes the push plate through the connecting rod, the push plate pushes the limiting rod out of the limiting hole, the limiting rod is completely retracted into the limiting rod mounting groove, then the drive head can be pulled out of the mounting seat fixed on the surface of the old batch head, the limiting rod is completely pressed into the limiting rod mounting groove by hand again, the limiting spring is compressed, then the drive head is inserted into the mounting seat fixed on the surface of the new batch head, when the limiting rod mounting groove is aligned with the new limiting hole, the limiting spring pushes the one end of the limiting rod into the limiting hole again, the replacement of the batch head is completed, the whole replacement process does not need a third-party tool, and is simple and fast. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic view of the utility model;

[0016] Figure 2 It is the structure schematic view of the utility model section;

[0017] Figure 3 It is Figure 2 It is the structure enlarged schematic view of A in the middle;

[0018] Figure 4 It is the schematic view of torque wrench body and bit split state;

[0019] Figure 5 It is the structure schematic view of limit rod installation groove section;

[0020] Figure 6 It is Figure 5 It is the structure enlarged schematic view of B in the middle.

[0021] In the drawing: torque wrench body 1, bit 2, drive head 3, mounting seat 4, limit rod installation groove 5, limit hole 6, limit rod 7, limit spring 8, sleeve 9, spring plate 10, connecting rod 11, push plate 12, button spring 13, button plate 14. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme of the utility model to be described clearly and completely, and the advantage is more clear and obvious, the following will be further detailed with the drawings to the utility model embodiment. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without doing creative work, belong to the scope of the protection of the utility model.

[0023] Embodiment one: please refer to Figures 1-6The utility model provides a kind of technical scheme: a steering wheel cam torsion test equipment, comprising: torque wrench body 1 and batch head 2, the surface of torque wrench body 1 is fixed with driving head 3, the surface of batch head 2 is fixed with mounting seat 4, driving head 3 is movably inserted in mounting seat 4, the surface of mounting seat 4 is fixed with sleeve 9, the inner wall of sleeve 9 is fixed with spring plate 10, spring plate 10 is movably inserted with connecting rod 11 on the surface, one end of connecting rod 11 is fixed with push plate 12, the other end of connecting rod 11 is fixed with button plate 14, the surface of driving head 3 is equipped with limit rod installation groove 5, the surface of mounting seat 4 is equipped with limit hole 6, one end of limit rod installation groove 5 is movably inserted with limit rod 7, the other end of limit rod 7 is movably inserted in limit hole 6, one end of the inner wall of limit rod installation groove 5 is fixed with limit spring 8, the other end of limit spring 8 is fixed on the surface of limit rod 7, limit rod installation groove 5 is circular groove structure, limit hole 6 is round hole structure, sleeve 9 is circular ring column structure, the inner ring diameter of sleeve 9 is same with the diameter of limit rod installation groove 5 and limit hole 6, the part of driving head 3 inserted in mounting seat 4 is hexagonal prism structure, the groove shape of mounting seat 4 is cooperated with driving head 3.

[0024] When needing to replace batch head 2 for torque wrench body 1 in actual use, button plate 14 is pressed to the depth of sleeve 9, the movement of button plate 14 pushes push plate 12 through connecting rod 11, push plate 12 pushes limit rod 7 out of limit hole 6, so that limit rod 7 is completely retracted into limit rod installation groove 5, then driving head 3 can be pulled out from the mounting seat 4 fixed on the surface of old batch head 2, limit rod 7 is completely pressed into limit rod installation groove 5 again with hand, so that limit spring 8 is compressed, then driving head 3 is inserted into the mounting seat 4 fixed on the surface of new batch head 2, when limit rod installation groove 5 is aligned with new limit hole 6, limit spring 8 pushes one end of limit rod 7 into limit hole 6 again, so that the replacement of batch head 2 is completed, the whole replacement process does not need third party tool, and is simple and fast.

[0025] In the embodiment one, in order to make button plate 14 return to original position after being released, button spring 13 is sleeved on the rod body of connecting rod 11, one end of button spring 13 abuts on the surface of spring plate 10, the other end of button spring 13 abuts on the surface of button plate 14.

[0026] When button plate 14 is pressed into the depth of sleeve 9, button spring 13 is compressed by button plate 14 and spring plate 10, after driving head 3 is pulled out from mounting seat 4, button plate 14 is pushed back to original position under the elastic movement of button spring 13, button plate 14 pulls push plate 12 back into sleeve 9 through connecting rod 11, so that push plate 12 does not hinder installation when driving head 3 is inserted into the mounting seat 4 fixed on the surface of new batch head 2.

[0027] In actual use, when it is necessary to replace the bit 2 on the torque wrench body 1, press the button plate 14 deeper into the sleeve 9. The movement of the button plate 14 pushes the push plate 12 through the connecting rod 11. The push plate 12 pushes the limit rod 7 out of the limit hole 6, so that the limit rod 7 is fully retracted into the limit rod mounting groove 5. Then, the drive head 3 can be pulled out from the mounting seat 4 fixed on the surface of the old bit 2. Afterwards, press the limit rod 7 completely into the limit rod mounting groove 5 by hand again, so that the limit spring 8 is compressed. Then, insert the drive head 3 into the mounting seat 4 fixed on the surface of the new bit 2. When the limit rod mounting groove 5 is aligned with the new limit hole 6, The limiting spring 8 pushes one end of the limiting rod 7 back into the limiting hole 6, thus completing the replacement of the bit 2. The entire replacement process requires no third-party tools and is simple and quick. When the button plate 14 is pressed deep into the sleeve 9, the button spring 13 is compressed by the button plate 14 and the spring plate 10. After the drive head 3 is removed from the mounting base 4, the button plate 14 is released. The button spring 13 can push the button plate 14 back to its original position under its own elastic movement. The button plate 14 then pulls the push plate 12 back into the sleeve 9 through the connecting rod 11, preventing the push plate 12 from obstructing the installation when the drive head 3 is inserted into the mounting base 4 fixed on the surface of the new bit 2.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steering wheel cam torque testing device, comprising: A torque wrench body (1) and a bit (2), wherein a drive head (3) is fixed on the surface of the torque wrench body (1) and a mounting base (4) is fixed on the surface of the bit (2), and the drive head (3) is movably inserted into the mounting base (4), characterized in that: a sleeve (9) is fixed on the surface of the mounting base (4), a spring plate (10) is fixed on the inner wall of the sleeve (9), a connecting rod (11) is movably inserted into the surface of the spring plate (10), a push plate (12) is fixed at one end of the connecting rod (11), and a button plate (14) is fixed at the other end of the connecting rod (11).

2. The steering wheel cam torque testing device according to claim 1, characterized in that: The drive head (3) has a limit rod mounting groove (5) on its surface and a limit hole (6) on its surface. One end of the limit rod (7) is movably inserted into the limit rod mounting groove (5) and the other end of the limit rod (7) is movably inserted into the limit hole (6).

3. The steering wheel cam torque testing device according to claim 2, characterized in that: One end of a limiting spring (8) is fixed on the inner wall of the mounting groove (5) of the limiting rod, and the other end of the limiting spring (8) is fixed on the surface of the limiting rod (7).

4. The steering wheel cam torque testing device according to claim 3, characterized in that: The limiting rod mounting groove (5) has a circular groove structure, the limiting hole (6) has a circular hole structure, and the sleeve (9) has a circular annular cylinder structure. The inner ring diameter of the sleeve (9) is the same as the diameter of the limiting rod mounting groove (5) and the limiting hole (6).

5. The steering wheel cam torque testing device according to claim 1, characterized in that: The portion of the drive head (3) inserted into the mounting base (4) has a hexagonal prism structure, and the groove shape of the mounting base (4) matches the drive head (3).

6. The steering wheel cam torque testing device according to claim 1, characterized in that: A button spring (13) is sleeved on the body of the connecting rod (11). One end of the button spring (13) abuts against the surface of the spring plate (10), and the other end of the button spring (13) abuts against the surface of the button plate (14).

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