CN105865807A - Automatic clamping failure detection mechanism for automobile seat horizontal drive mechanism - Google Patents

Abstract

The invention discloses an automatic clamping failure detection mechanism for an automobile seat horizontal drive mechanism. An existing automobile seat horizontal drive mechanism detection technology needs to be improved. The automatic clamping failure detection mechanism for the automobile seat horizontal drive mechanism comprises a mechanism bottom plate, a motor installation support, a first slide block, a linear sliding guide rail, a limiting sensor, a transmission transverse plate, a drive motor, a motor shaft sleeve support, an HDM gear case automatic clamping device, an HDM lead screw automatic clamping device and a big-head lead screw support. The HDM gear box automatic clamping device comprises a clamping installation bottom plate, a clamping motor, a linear sliding rail, an HDM gear box clamp, a connecting plate, a second sliding block, an installation base, a lead screw, a spring support, a buffering spring and a flange. The HDM lead screw automatic clamping device comprises a cylinder, a cylinder rod, a small-head lead screw support pressing plate, a small-head lead screw support and a small-head lead screw support top plate. The requirement for the technology of operation staff is low, failure signals are amplified through a vibration clamp, the detection quality is guaranteed, and an HDM mechanism can not be damaged.

Description

A kind of horizontal driver of vehicle seat clamps fault detection mechanism automatically

Technical field

The invention belongs to detection technique field, relate to one and automatically clamp failure detector, special Do not relate to horizontal driver of vehicle seat clamps fault detection mechanism automatically.

Technical background

Horizontal driver of vehicle seat (HDM, horizontal drive mechanism) is a kind of The gyration driving motor is converted into sliding rail of automobile seat linear movement thus realizes seat The mechanism of regulation before and after position.Owing to colliding with on its part processing, rigging error, flank of tooth or The reasons such as burr, cause small part product to produce abnormal getting ready in automotive seat running and make an uproar Sound, after being once installed on slide rail, HDM is affected by system, and knocking is put Greatly, even if can clearly hear when regulating seat in more noisy environment, and owing to manufacturing The size of error HDM has the dimensions error and is unfavorable for fault detect.Owing to seat is automobile In one of most important safety component, do not allow to be individually replaced slide rail, the most defective in quality, Whole chair must be changed.Therefore, the consequence that this kind of defect produces will bring huge warp to supplier Ji and the loss of prestige.Most auto parts and components factory commercial city employment work listens method for acoustic Judge whether knock.Due to manufacturing firm and agent or even terminal client, to noise All take subjective detection, there is no standard in conforming engineering, therefore cause a lot of qualified products Misjudged bad.Artificial cognition method is because artificial subjective judgment product quality not only makes product Cost increases, and adds the erroneous judgement of product and miss the probability received, it is impossible to adapt to automotive seat The quick detection of horizontal driver, is highly detrimental to the quality testing of horizontal driver of vehicle seat.

Design one for this and should meet each link personnel for horizontal driver of vehicle seat The requirement of quality testing, simplify technology requirement, reduce cost, again can flexible operation, use Convenient, and it is extremely important HDM itself will not to be produced the detection device damaged.

Summary of the invention

The present invention seeks to the deficiency for existing detection method Yu technology, it is provided that the letter of a kind of mechanism Single, be applicable to the fault detection mechanism that HDM quick clip mounting or dismounting are unloaded, easy to operate, can quickly, Reliably detect HDM, HDM is not produced damage.

The present invention specifically solves the solution that its technical problem taked:

The present invention include organization soleplate, motor mounting rack, the first slide block, linear slide guide rail, Limit sensors, transmission transverse slat, driving motor, motor shaft sleeve support, HDM gear-box are automatic Clamping apparatus, the automatic clamping apparatus of HDM leading screw and major part leading screw bearing.Both threads is slided and is led Rail is parallel to be fixed on organization soleplate, and every linear slide guide rail all constitutes slip with the first slide block Secondary；Every linear slide guide rail two ends are equipped with limit sensors；The two ends of described transmission transverse slat Fix with the first slide block on both threads rail plate；It is horizontal that motor mounting rack is fixed on transmission On plate；Drive motor to be fixed on motor mounting rack, drive the output shaft of motor to pass through axle sleeve Being bearing on motor shaft sleeve support, motor shaft sleeve support is fixed on transmission transverse slat；Described The automatic clamping apparatus of HDM gear-box include clamping mounting base, clamp motor, linear slide rail, HDM gear-box fixture, connecting plate, the second slide block, mounting seat, leading screw, spring fastening, Buffer spring and flange.Clamp mounting base to be fixed on transmission transverse slat；Both threads slide rail is put down Row is fixed on and clamps on mounting base；Every linear slide rail two ends constitute sliding with two piece of second slide block Dynamic pair；HDM gear-box fixture is L-shaped；The horizontal arm of two HDM gear-box fixtures with wherein Two piece of second slide block on single line slide rail is fixed respectively, two pieces on another root linear slide rail Second slide block is respectively and fixedly provided with mounting seat；HDM gear-box clamp top is provided with vibrating sensor； Each mounting seat is connected by connecting plate with the vertical arm of corresponding end HDM gear-box fixture；Two Spring fastening is all fixed in the inner of individual mounting seat；Buffer spring all it is nested with on two spring fastenings, And one of them spring fastening inner face fixation pressure sensor；Two HDM gear-box fixtures close In the central axis centering of driving motor output shaft, two spring fastenings are about driving motor output The central axis centering of axle；Equal mounting flange in the middle part of two pieces of connecting plates；Two flanges are all and leading screw Constitute screw pair, and the thread rotary orientation of two flanges is contrary；Clamp motor and drive screw turns.

Design HDM gear-box fixture so that the natural frequency of HDM gear-box fixture reaches HDM The 0.5 to 1.4 of the fault-signal frequency of gear-box, plays amplification to gathered fault-signal, Even if fault-signal transport T of HDM gear-box reaches maximum.The fault of HDM gear-box Signal transport T is calculated as follows:

$\left|T\right|=\frac{\sqrt{1+\frac{1}{Q^2}{\left(\frac{f}{f_0}\right)}^2}}{\sqrt{{\[1-{\left(\frac{f}{f_0}\right)}^2\]}^2+\frac{1}{Q^2}{\left(\frac{f}{f_0}\right)}^2}}$

In formula, f is the frequency of fault-signal, and Q is damping ratio, consolidating of HDM gear-box fixture The frequency is had to be:

$f_0=\frac{1}{2\mathrm{\π}}\sqrt{k/M}=\frac{1}{4\mathrm{\π}}\frac{t}{l^2}\sqrt{E/\mathrm{\ρ}}$

In formula, k is the equivalent coefficient of elasticity of HDM gear-box fixture, and M is HDM gear clamp The equivalent mass of tool；T is the vertical arm thickness of HDM gear-box fixture, and l is HDM gear clamp The vertical arm height of tool, the Young's modulus of E and ρ HDM gear-box fixture respectively and density of material.

The described automatic clamping apparatus of HDM leading screw includes cylinder, cylinder rod, microcephaly's leading screw bearing Pressing plate, microcephaly's leading screw bearing and microcephaly's leading screw bearing top board.Described cylinder is fixed at the bottom of mechanism On plate；The cylinder rod of cylinder is fixed with microcephaly's leading screw bearing；Two pieces of microcephaly's leading screw bearing pressing plates with Microcephaly's leading screw bearing both sides constitute sliding pair, and are each attached on organization soleplate；Microcephaly's leading screw props up Seat top board is fixed on organization soleplate, and microcephaly's leading screw bearing is played axial limiting effect.Big captacula Thick stick bearing is fixed on organization soleplate, and coaxial with microcephaly's leading screw bearing.

Described driving motor, clamp motor and cylinder by control system control, spacing sensing The signal detected is passed to control system by device, vibrating sensor and pressure transducer.

Present configuration can be simple, compact, manufactures and easy to operate, reliable, to operator Technology requires low, and is exaggerated fault-signal by vibration tong, it is simple to fault-signal Measure, it is ensured that while detection quality, HDM mechanism will not be caused damage.

Accompanying drawing explanation

Fig. 1 is the overall structure axonometric chart of the present invention；

Fig. 2 is the top view of the present invention；

Fig. 3 is the structural representation of the automatic clamping apparatus of HDM gear-box in the present invention；

Fig. 4 is the structural representation of the automatic clamping apparatus of HDM leading screw in the present invention.

Detailed description of the invention

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of horizontal driver of vehicle seat is automatic Clamp fault detection mechanism, including organization soleplate 1, motor mounting rack the 2, first slide block 3, Linear slide guide rail 4, limit sensors 5, transmission transverse slat 6, driving motor, motor shaft sleeve Support 7, the automatic clamping apparatus of HDM gear-box 8, the automatic clamping apparatus of HDM leading screw 9 and major part Leading screw bearing 11.Both threads rail plate 4 is parallel to be fixed on organization soleplate 1, every Linear slide guide rail 4 all constitutes sliding pair with the first slide block 3；4 liang of every linear slide guide rail End is equipped with limit sensors 5；On the two ends of transmission transverse slat 6 and both threads rail plate 4 The first slide block 3 fix；Motor mounting rack 2 is fixed on transmission transverse slat 6；Drive motor It is fixed on motor mounting rack 2, drives the output shaft of motor to pass through sleeve supporting at motor shaft On set support 7, motor shaft sleeve support 7 is fixed on transmission transverse slat 6；HDM gear-box is automatic Clamping apparatus 8 includes clamping mounting base 81, clamping motor 82, linear slide rail 83, HDM Gear-box fixture 84, connecting plate the 85, second slide block 86, mounting seat 87, leading screw 88, Spring fastening 89, buffer spring 810 and flange 811.Clamp mounting base 81 and be fixed on biography On motion plate 6；Parallel being fixed on of both threads slide rail 83 clamps on mounting base 81；Every Linear slide rail 83 two ends and two piece of second slide block 86 constitute sliding pair；HDM gear-box fixture 84 L-shaped；On the horizontal arm of two HDM gear-box fixtures 84 and wherein single line slide rail 83 Two piece of second slide block 86 fix respectively, two piece of second slide block on another root linear slide rail 83 86 are respectively and fixedly provided with mounting seat 87；HDM gear-box fixture 84 top is provided with vibrating sensor； The vertical arm of each mounting seat 87 and corresponding end HDM gear-box fixture 84 passes through connecting plate 85 connect；Spring fastening 89 is all fixed in the inner of two mounting seat 87；Two spring fastenings Buffer spring 810, and one of them spring fastening 89 inner face fixation pressure all it is nested with on 89 Sensor；Two HDM gear-box fixtures 84 are about the central axis pair driving motor output shaft In, two spring fastenings 89 are about the central axis centering driving motor output shaft；Two pieces of companies Equal mounting flange 811 in the middle part of fishplate bar 85；Two flanges 811 all constitute screw pair with leading screw 88, And the thread rotary orientation of two flanges 811 is contrary；Clamping motor 82 drives leading screw 88 to rotate.

HDM gear-box fixture 84 is according to random vibration principle, HDM gear-box size and gear Case failure-frequency designs so that the natural frequency of HDM gear-box fixture 84 reaches HDM gear The 0.5 to 1.4 of the fault-signal frequency of case, plays amplification to gathered fault-signal, i.e. Fault-signal transport T making HDM gear-box reaches maximum.The fault letter of HDM gear-box Number transport T is calculated as follows:

$\left|T\right|=\frac{\sqrt{1+\frac{1}{Q^2}{\left(\frac{f}{f_0}\right)}^2}}{\sqrt{{\[1-{\left(\frac{f}{f_0}\right)}^2\]}^2+\frac{1}{Q^2}{\left(\frac{f}{f_0}\right)}^2}}$

In formula, f is the frequency of fault-signal, and Q is damping ratio, HDM gear-box fixture 84 Natural frequency is:

$f_0=\frac{1}{2\mathrm{\π}}\sqrt{k/M}=\frac{1}{4\mathrm{\π}}\frac{t}{l^2}\sqrt{E/\mathrm{\ρ}}$

In formula, k is the equivalent coefficient of elasticity of HDM gear-box fixture 84, and M is HDM gear The equivalent mass of clamp tool 84；T is the vertical arm thickness of HDM gear-box fixture 84, and l is HDM The vertical arm height of gear-box fixture 84, the Young of E and ρ HDM gear-box fixture 84 respectively Modulus and density of material.

The automatic clamping apparatus of HDM leading screw 9 includes that cylinder 91, cylinder rod 92, microcephaly's leading screw prop up Seat pressing plate 93, microcephaly's leading screw bearing 94 and microcephaly's leading screw bearing top board 95.Cylinder 91 is fixed On organization soleplate 1；The cylinder rod 92 of cylinder 91 is fixed with microcephaly's leading screw bearing 94；Two Block microcephaly's leading screw bearing pressing plate 93 constitutes sliding pair with microcephaly's leading screw bearing 94 both sides, and the most solid It is scheduled on organization soleplate 1；Microcephaly's leading screw bearing top board 95 is fixed on organization soleplate 1, right Microcephaly's leading screw bearing 94 plays axial limiting effect.Major part leading screw bearing 11 is fixed on organization soleplate On 1 and coaxial with microcephaly's leading screw bearing 94.

Drive motor, clamp motor 82 and cylinder 91 by control system control, spacing sensing The signal detected is passed to control system by device 5, vibrating sensor and pressure transducer.

This horizontal driver of vehicle seat clamps the operation principle of fault detection mechanism automatically:

When HDM is carried out quality testing, first HDM gear-box 10 is placed in HDM gear clamp Between tool 84, and it is connected with the output shaft driving motor；Unclamp microcephaly's leading screw bearing 94 top Bolt, cylinder rod 92 drives microcephaly's leading screw bearing 94 to be moved rearwards by, by leading screw microcephaly and microcephaly The heart, leading screw major part and major part bearing 95 installing hole to the heart, are tightened by leading screw bearing 94 installing hole Major part leading screw bearing 11 top bolt, cylinder rod 92 drives microcephaly's leading screw bearing 94 to reach Move to microcephaly's leading screw bearing top board 95, tighten microcephaly's leading screw bearing 94 top bolt, complete silk Thick stick clamps.Then, clamp motor 82 and rotate forward, drive leading screw 88 to drive flange 811, thus Drive HDM gear-box fixture 84 and mounting seat 87 to HDM gear-box by connecting plate 85 It is clamped, is automatically switched off when the pressure of pressure transducer reaches 5N and clamps motor 82, complete Become Automatic-clamping.Finally driving motor to rotate forward drives HDM gear-box 10 to drive transmission transverse slat 6 And part positive movement thereon, the vibrating sensor on HDM gear-box fixture 84 carries out HDM Gear-box 10 rotates forward data acquisition；When transmission transverse slat 6 arrives at limit sensors, drive electricity Machine reversion drives HDM gear-box to drive transmission transverse slat and upper part adverse movement, HDM gear Vibrating sensor on clamp tool 84 carries out reversal data collection；When transmission transverse slat 6 arrives at limit Drive motor to stop during level sensor, complete HDM fault-detection data collection.Unclamp HDM tooth Roller box, unclamps HDM leading screw, takes off HDM, waits detection next time.

Claims (2)

1. horizontal driver of vehicle seat clamps a fault detection mechanism automatically, including organization soleplate, motor Mounting bracket, the first slide block, linear slide guide rail, limit sensors, transmission transverse slat, driving motor, motor Sleeve rack, the automatic clamping apparatus of HDM gear-box, the automatic clamping apparatus of HDM leading screw and major part leading screw bearing, It is characterized in that: both threads rail plate is parallel to be fixed on organization soleplate, every linear slide guide rail all with First slide block constitutes sliding pair；Every linear slide guide rail two ends are equipped with limit sensors；Described transmission transverse slat Two ends fix with the first slide block on both threads rail plate；Motor mounting rack is fixed on transmission transverse slat； Drive motor to be fixed on motor mounting rack, drive the output shaft of motor to be propped up at motor shaft sleeve by sleeve supporting On frame, motor shaft sleeve support is fixed on transmission transverse slat；The described automatic clamping apparatus of HDM gear-box includes folder Fill mounting base, clamp motor, linear slide rail, HDM gear-box fixture, connecting plate, the second slide block, installation Base, leading screw, spring fastening, buffer spring and flange；Clamp mounting base to be fixed on transmission transverse slat；Two Parallel being fixed on of root linear slide rail clamps on mounting base；Every linear slide rail two ends are constituted with two piece of second slide block Sliding pair；HDM gear-box fixture is L-shaped；The horizontal arm of two HDM gear-box fixtures and wherein single line Two piece of second slide block on slide rail is fixed respectively, and two piece of second slide block on another root linear slide rail is respectively and fixedly provided with peace Dress base；HDM gear-box clamp top is provided with vibrating sensor；Each mounting seat and corresponding end HDM gear The vertical arm of clamp tool is connected by connecting plate；Spring fastening is all fixed in the inner of two mounting seat；Two bullets Buffer spring, and one of them spring fastening inner face fixation pressure sensor all it is nested with on spring bearing；Two HDM Gear-box fixture is about the central axis centering of driving motor output shaft, and two spring fastenings are defeated about driving motor The central axis centering of shaft；Equal mounting flange in the middle part of two pieces of connecting plates；Two flanges all constitute spiral with leading screw Pair, and the thread rotary orientation of two flanges is contrary；Clamp motor and drive screw turns；

Design HDM gear-box fixture so that the natural frequency of HDM gear-box fixture reaches the event of HDM gear-box The 0.5 to 1.4 of barrier signal frequency, plays amplification to gathered fault-signal, though the event of HDM gear-box Barrier signal transport T reaches maximum；Fault-signal transport T of HDM gear-box is calculated as follows:

$\left|T\right|=\frac{\sqrt{1+\frac{1}{Q^2}{\left(\frac{f}{f_0}\right)}^2}}{\sqrt{{\[1-{\left(\frac{f}{f_0}\right)}^2\]}^2+\frac{1}{Q^2}{\left(\frac{f}{f_0}\right)}^2}}$

In formula, f is the frequency of fault-signal, and Q is damping ratio, and the natural frequency of HDM gear-box fixture is:

$f_0=\frac{1}{2\mathrm{\π}}\sqrt{k/M}=\frac{1}{4\mathrm{\π}}\frac{t}{l^2}\sqrt{E/\mathrm{\ρ}}$

In formula, k is the equivalent coefficient of elasticity of HDM gear-box fixture, and M is the equivalent matter of HDM gear-box fixture Amount；T is the vertical arm thickness of HDM gear-box fixture, and l is the vertical arm height of HDM gear-box fixture, E and ρ divides The Young's modulus of other HDM gear-box fixture and density of material；

The described automatic clamping apparatus of HDM leading screw includes cylinder, cylinder rod, microcephaly's leading screw bearing pressing plate, microcephaly Leading screw bearing and microcephaly's leading screw bearing top board；Described cylinder is fixed on organization soleplate；The cylinder rod of cylinder with Microcephaly's leading screw bearing is fixed；Two pieces of microcephaly's leading screw bearing pressing plates constitute sliding pair with microcephaly's leading screw bearing both sides, and It is each attached on organization soleplate；Microcephaly's leading screw bearing top board is fixed on organization soleplate, plays microcephaly's leading screw bearing Axial limiting effect；Major part leading screw bearing is fixed on organization soleplate, and coaxial with microcephaly's leading screw bearing.

A kind of horizontal driver of vehicle seat the most according to claim 1 clamps fault detection mechanism automatically, It is characterized in that: described driving motor, clamp motor and cylinder by control system control, limit sensors, The signal detected is passed to control system by vibrating sensor and pressure transducer.