CN100555771C

CN100555771C - Terminal insertion amount-inspecting device

Info

Publication number: CN100555771C
Application number: CNB200480020020XA
Authority: CN
Inventors: 大西秀夫; 谷口芳和; 林美志夫; 山冈秀嗣; 涂冈明
Original assignee: Sumitomo Wiring Systems Ltd; OHT Inc
Current assignee: Sumitomo Wiring Systems Ltd; OHT Inc
Priority date: 2003-07-25
Filing date: 2004-07-22
Publication date: 2009-10-28
Anticipated expiration: 2024-07-22
Also published as: KR100876793B1; JP2005044725A; WO2005011070A1; CN1823454A; JP4069321B2; KR20060086933A

Abstract

Not with the termination contact that hobs electric wire that is installed in the connector, in can the objective right judgement terminal whether suitable insertion connector shell.Near two sensing plates (40a, 40b) that spacing is a predetermined distance of the configuration connector top of connector shell (10), additional AC signal on the terminal that inserts connector (10), on sensing plate (40a, 40b), detect AC signal, the relative value that detects voltage signal by the sensing plate place detects the insertion depth that terminal inserts connector, can confirm whether the insertion state of terminal is suitable.

Description

Terminal insertion amount-inspecting device

Technical field

The present invention relates to a kind of terminal insertion amount-inspecting device, particularly a kind ofly can directly differentiate above-mentioned terminal that the end is fixed with the electric wire of terminal and insert the insertion amount in the above-mentioned connector and the confirmation method of terminal insertion amount.

Background technology

A trend is arranged in recent years, and all machines are all worked under Electronic Control, and the electronics action normally is necessary condition so.Therefore, each parts in these machines are realized the quality of the distribution that electronics continues is just particularly important, directly about whole quality.

Mostly the end of distribution is connector shell, and in the production process of connector shell, when anchoring at terminal on the electric wire and insert connector shell, if insert insufficient (fully), so follow-up continuing with connector also can go wrong.

In order to avoid this problem, existing this class device, the maintenance connector shell can be reciprocating extracting on the direction of terminal, on the direction of insertion of terminal, energizing spring is installed, and is arranged on the elastic force of connector shell antagonistic spring and the sensitive switch (for example patent documentation 1) of mobile time work.

Pull electric wire after terminal inserted connector shell, if terminal and connector shell tighten fully, sensitive switch detects connector shell and follows pullling of electric wire is moved upward so;

If terminal and connector shell be chucking fully, sensitive switch is not worked when extracting terminal so, and whether by connector shell whether the insertion state that moving of ormal weight judge terminal takes place upwards suitable.

In addition, also can be by miscellaneous part or moving part are set in connector, this moving part was not forced into the position of regulation when terminal inserted fully, inserted not exclusively (for example patent documentation 2,3,4) thereby detect.

Patent documentation 1 spy opens flat 9-180851 number

Patent documentation 2 spies open flat 10-40993 number

Patent documentation 3 spies open 2000-67980 number

Patent documentation 4 spies open flat 10-199603 number

But the method for record in the above-mentioned patent documentation 1 requires connector must have the structure of following complexity: the maintenance connector shell can be at the structure reciprocating on the direction of extracting of terminal, and the energizing spring structure detects reciprocating structure etc.

In addition, this insertion confirms that operation itself is the part of production process, is unfavorable for the raising of production efficiency.And the method for record is provided with above-mentioned structure in the patent documentation 1 to 4 in the connector shell, and testing fixture complex structureization, number of components increase, cost are improved.

Summary of the invention

The present invention is in view of above-mentioned problem, purpose is, a kind of distribution of high confidence level is provided, this Wiring construction is simple, harmless terminal, can directly not detect the insertion amount with termination contact in the distribution production process, it is bad to differentiate the terminal insertion in the distribution production process, need not through special checking process.

As one of method of reaching relevant purpose, this device has following structure.

Promptly, the terminal insertion amount-inspecting device that the terminal that hobs wire end that adds AC signal inserts the insertion amount in the connector shell is fixed in a kind of inspection, it is characterized in that, have: in order to carry out operation, be provided with taking in the connector maintaining part of the resettlement section that keeps above-mentioned connector to a plurality of cavity mounting terminal that are formed at above-mentioned connector shell; In order to detect the AC signal of gathering the above-mentioned terminal in the cavity that is inserted in above-mentioned connector shell, with the bottom surface sections of the connector that is accommodated in above-mentioned connector maintaining part approaching the time, deviate from mutually and the pair of conductive plate of configuration concurrently; Based on the voltage signal values that detects from above-mentioned each conductive plate, the terminal of differentiating additional above-mentioned AC signal inserts the discriminating gear of the insertion amount in the above-mentioned connector shell; The terminal that above-mentioned discriminating gear will be applied with above-mentioned AC signal detects when inserting predefined insertion depth in the above-mentioned cavity detects voltage signal values Vz1, Vz2 substitution (Vz2)/(Vz1-Vz2), the computing income value pre-determines as fiducial value, the operation result that detect voltage signal values Vz1, Vz2 substitution (Vz2)/(Vz1-Vz2) of said reference value when determined terminal is inserted compared, thereby the terminal that detects above-mentioned additional AC signal inserts the insertion amount in the cavity.

Description of drawings

Fig. 1 is the ideograph of basic principle of the terminal insertion state affirmation device of the explanation insertion state that detects the connector that terminal and the embodiment of the invention relate to.

The flow chart of the insertion inspection method of the insertion state confirmation device of Fig. 2 connector that to be explanation relate to about terminal and the embodiment of the invention.

Fig. 3 is the key diagram that the connector shell inner terminal inserts state.

Embodiment

Below, with reference to accompanying drawing the embodiment that the present invention relates to is elaborated.

The terminal insertion amount-inspecting device that present embodiment relates to can judge under connector shell and the non-contacting situation of terminal that terminal inserts the insertion amount (terminal is to the insertion amount of shell specifically) in the connector shell.If whether correct the device that uses present embodiment to relate to can be differentiated in the production process of distribution terminal and insert in the connector insertion, in subsequent process, need not to examine once more terminal and whether correctly insert in the connector.

At first, with reference to Fig. 1, the inspection principle of the terminal of suitable terminal insertion amount-inspecting device of the present invention to the insertion amount of connector is described.Fig. 1 is the ideograph that explanation detects terminal that the embodiment of the invention relates to and the basic principle of the terminal insertion state affirmation device of the insertion state of connector.

Among Fig. 1, the 10th, formation is checked the connector shell (hereinafter referred to as [connector]) of the distribution end of object, the assigned address in connector 10 inserts the end terminal of an end that hobs electric wire (hobbing Electricity Line) 300 of predetermined dimension.

That inserts in this connector hobs electric wire 300, is cut into the length of regulation as requested in advance, and the fixing terminals that should insert the regulation pattern in the connector 10 of method such as crush-cutting are adopted in the end.

40a, 40b is the two definite conductive plate Z axle sensing plates of position located with connector 10 corresponding connector snap-latch surfaces (being the bottom surface among Fig. 1) that are configured in of almost parallel, these two conductive plates are contiguous and deviate from certain distance, for example, deviate from certain distance simultaneously and get final product at the two sides of insulating thin moulding sensing plate.But, need not be confined to above-mentioned example, it is also passable to be disposed at the position that deviates from predetermined distance.

When the terminal that hobs electric wire of additional AC signal inserted in the connector 10, Z axle sensing plate detected the signal of collection from terminal, obtains detecting voltage signal Vz1, Vz2.Specifically, the distance that detects voltage signal and this sensing plate and terminal that detects is inversely proportional to.

The 100th, the inspection control part of control testing fixture, the 180th, display control unit, by checking the control of control part 100, it is luminous to make the next one of insertion position instruction unit 200 should insert the incandescnet particle of connector shell position of terminal.The 200th,, when being positioned in the connector shell bottom surface, dispose the insertion instruction unit of LED respectively at the connecter hole bottom position.

500 are arranged on the connector maintaining part on the operating desk that does not have expression among the figure, and the accommodation section 550 that holds connector 10 is set in the connector maintaining part 500, hold connector in this accommodation section 550 and carry out terminal insertion operation.Above-mentioned Z axle sensing plate 40a, 550 bottom is determined in this accommodation section in the position of 40b.

Inspection control part 100 in the present embodiment, with a pair of Z axle sensing plate 40a, the distance between the 40b detects the relative distance of sensing plate and terminal for benchmark.Thus, can detect the distance that terminal is inserted into each Z axle sensing plate, promptly can detect terminal and where be inserted in the connector 10, can judge the position that whether is inserted into regulation and insert whether fully.

Details are recorded and narrated later on, and the voltage that detects of Z axle sensing plate is to be determined by the relative area of Z axle sensing plate to terminal, therefore, even if the part of Z axle sensing plate is provided with porose, groove, mouth appear in a part, all are very little to the influence that detects the result, almost can ignore.

Inspection control part 100 shown in Figure 1,115, the 116th, to gathering from Z axle sensing plate 40a, 40b detects the expander that voltage signal enlarges, and the 125, the 126th, detect collection from each Z axle sensing plate 40a, the peak detection circuit E, the F that detect voltage signal Vz1, Vz2 of 40b.

The 133rd, input Z axle sensing plate 40a, 40b detects peak signal, exports the Z axle subtraction circuit of the difference (Vz1-Vz2) of this value of detecting.The 143rd,, with the Z axle difference signal (Vz1-Vz2) of Z axle subtraction circuit 133 as denominator, with Z axle sensing plate 40b detect voltage signal (Vz2) as molecule, obtain the Z axle division circuit of the value of { Vz2/ (Vz1-Vz2) }.

The output of Z axle division circuit 143 shows Z axle sensing plate 40a, and the Strength Changes of gathering from the inspection signal of terminal is offset in the relative variation that detects voltage signal of 40b, and this terminal anchors on the additional electric wire as the inspection signal of checking object.Consequently, the output of Z axle division circuit 143 becomes and inserts terminal to each Z axle sensing plate 40a, the proportional signal level of the distance of 40b.Present embodiment because Z axle sensing plate 40a, 40b is arranged on the base of connector 10, terminal by on the connector when the bottom surface direction moves, can positively detect the insertion depth of terminal accurately.

Therefore,, can detect the insertion amount of terminal, can contactlessly directly detect whether be inserted into correct insertion position to connector 10 by the output of Z axle division circuit 143.

Above circuit is constructed as follows, Z axle sensing plate (1/{ (1/Vz2)-(1/Vz1) })/Vz1={ (Vz1 * Vz2)/(Vz1-Vz2) }/establishment of Vz1=(Vz2)/(Vz1-Vz2) formula.

In the present embodiment, see the back side of Z axle sensing plate 40b from the connector side at Z axle sensing plate 40a, connector 10 is made by non electrically conductive material, in addition because Z axle sensing plate 40a, 40b maintains high impedance status, though the value of detecting of Z axle sensing plate 40b place terminal AC signal more or less is subjected to the influence of Z axle sensing plate 40a, the AC signal of terminal is not subjected to covering of Z axle sensing plate 40a, can detect the value of certain level really.Consequently, the relativeness of the value of detecting of Z axle sensing plate 40a and Z axle sensing plate 40b is only determined by the insertion position of terminal, can ballparkly be detected the insertion position of connector 10 inner terminals.

That is, can be because of the existence of Z axle sensing plate 40a, and can't detect the AC signal of Z axle sensing plate 40b, because the existence of Z axle sensing plate 40a though the level that detects of Z axle sensing plate 40b is slightly descended, can detect the value of certain level really.

The terminal that inserts connector 10 be not under the situation of first terminal too, inserted under the situation of several terminals in the connector 10, the level that detects of sensing plate is inserted the position of terminal and the influence of number can change, even so, whether recognition terminal insertion position that still in all cases still can be correct is correct.

That is, present embodiment utilizes static to check signal in conjunction with detecting to exchange, so the level that detects that detects voltage signal and the conductive plate that detect from conductive plate are inversely proportional to each distance of inserting terminal.Thus, detect voltage signal the level that detects inverse (1/Vz1) and (1/Vz2) with conductive plate to each the insertion terminal distance be directly proportional.Thus, their difference { (1/Vz1)-(1/Vz2) } is equivalent to conductive plate 40a, the distance between the 40b (reference range).(1/{ (1/Vz2)-(1/Vz1) })/Vz1 represents (1/Vz1) ratio to reference range, absorb supply with check signal etc. rate change part (waiting rate to become the Move branch).This ratio is and the proportional amount of distance that the most suitable inspection is used.

Thus, the output of insertion end period of the day from 11 p.m. to 1 a.m Z axle division circuit 143, obtain terminal insertion depth (insertion amount) intrinsic detect the result.The error that detects of insertion depth is very little in the present embodiment, can guarantee really to judge whether terminal correctly inserts the above precision of necessary 100m in the existing connector.

Have the device that the present embodiment of above structure relates to, the terminal of its connector 10 inserts the control situation, describes with reference to the flow chart of Fig. 2.The flow chart of the insertion inspection method of Fig. 2 connector insertion state confirmation device that to be explanation relate to about terminal and the embodiment of the invention.

Among Fig. 2, S1 step at first, the connector 10 that constitutes the distribution end is mounted and is fixed in the accommodation section 550 of connector maintaining part 500, and this connector maintaining part 500 is positioned at the top that present embodiment relates to the insertion position instruction unit 200 of device.This operation is by manually installing and fixing, and perhaps being installed and fixed automatically by industrial robot can.After connector 10 correct the installations, the S1 step is finished, and can begin to carry out the following processing of S2 step.

After connector is fixing, shown in the S2 step, to should first inserting the interchange inspection signal that electric wire 300 applies assigned frequency that hobs in connector 10.

The S3 step drives insertion position instruction unit 200 then, makes corresponding to the incandescnet particle of answering first to insert the terminal that hobs electric wire 300 in connector 10 luminous.Thus, terminal is inserted the operating personnel of connector, can pass through Z axle sensing plate 40a, the hole of 40b, sight line does not move, and directly confirms the insertion position of terminal in connector 10.In addition, it is also passable to carry out carrying out after the S3 step process S2 step process earlier.

So in the S4 step, drive and check control part 100, begin to check terminal insertion amount.Because of above-mentioned action, check that peak detection circuit E, the F (125,126) of control part 100 begins to detect the peak value that detects voltage signal.In addition, operating personnel insert rational position in the connector with terminal.Carry out this insertion operation, obtain the result that detects of each sensing plate, calculate the insertion amount of terminal by the peak value that detects.

Present embodiment relates to, and the insertion state that anchors in the terminal insertion connector that hobs wire end is represented by Fig. 3.Fig. 3 is the key diagram that the connector shell inner terminal inserts state.

Be contained in the connector shell 10 in the connector maintaining part 500, as above-mentioned, integral body is rectangle, and inside is divided into both sides and respectively is provided with several holes 12.Each hole 12 all connects connector, anchoring at the terminal 13a, the 13b that hob electric wire 300 1 ends is inserted by connector rear side (upper side among the figure), for this

terminal

13a, 13b are fixed under the state that can't come off, that lance tab 14 (ラ Application ス) and connector shell 10 is one-body molded.

Fastener is arranged near the top of lance tab 14 and pliability is arranged, form the tab shape of elastically deformable, have in the hole 12 for lance tab 14 to the inboard flexible space 12a that strain takes place of terminal.

This

terminal

13a, 13b insert hole 12 and the top contacts in lance tab 14, make lance tab 14 to this flexible space 12a side generation strain, if terminal 13 is inserted into assigned position (bosom), inserting the lance tab 14 that strain takes place in the way so enters the connecting hole of terminal 13 and returns to original position, fastener is in fastening state in the connecting hole, therefore, can prevent that terminal 13 from coming off.If insert not exclusively, lance tab 14 does not engage so, be insert bad.

In addition, fastening state for expression lance tab 14, among Fig. 3, the state that the terminal 13a of connector 10 is inserted into [normal place] and engages fully with lance tab 14 is represented to insert in the right side, left side expression terminal 13a is not inserted into [normal place], only is inserted into the state (insert insufficient state) of lance tab 14 when the position of flexible space 12a side generation strain that make.

Like this, terminal is finished to the insertion of connector, enters the S5 step, checks that control part 100 judges whether to detect the end terminal that hobs electric wire that should insert, and this terminal has added AC signal, is inserted into predefined insertion depth.

Judge that this terminal inserts connector 10 and whether finishes, hope be by, for example, the peak value at Z axle sensing plate 40a place detects voltage Z (value after the calculating) above after the setting, through judging after a while again.

In the present embodiment, under the inadequate situation of insertion depth (situation of terminal 13b as shown in Figure 3), gather from Z axle sensing plate 40a, 40b to detect under voltage signal and the normal condition be different.Therefore, detect voltage signal values when measuring normal terminal in advance and being inserted into normal place, with these mensuration values of detecting as fiducial value, can be by detecting voltage signal within the scope of above-mentioned value, or outside the scope, whether normally judge.

In the S5 step, be not inserted into predefined insertion depth position if detect the terminal that hobs electric wire of additional AC signal, enter the S6 step so, the reason that clearly goes wrong.

So,, inform that operating personnel go wrong and reason in the S7 step.When going wrong, show the number of errors, show the reason of makeing mistakes on the display panel that does not also have in the drawings to represent except sounding the alarm and glimmering.

Operating personnel learn go wrong after, take necessary correction process.For example, inserting under the inadequate situation, terminal is inserted fully until the bottom.

In the S5 step, when checking that control part 100 detects, when the insertion depth of the end terminal that hobs electric wire of additional AC signal arrives normal place, enter the S10 step, judge whether terminal finishes the insertion of connector 10.When terminal has finished fully to the insertion of connector 10, send the end sound of representing this meaning, show that terminal finishes the insertion of this connector.

In the S10 step, when terminal does not finish fully to the insertion of connector 10, enter the S15 step, the clear and definite next one should be installed the accommodated position of connector 10 inside that hob electric wire, enters the S2 step.

According to above-mentioned present embodiment, utilization is at the simple structure of two sensing plates of connector shell bottom configuration, can detect with sensing plate and check signal value from proportional the interchange to terminal pitch, the output of insertion end period of the day from 11 p.m. to 1 a.m Z axle division circuit 143 shows, terminal insertion depth (insertion amount) the intrinsic result of detecting, so, can under complete non-contacting state, detect the insertion depth that the confidence level of distribution is had the terminal that hobs electric wire of significant impact.Consequently, there is no need, pull the electric wire that inserts connector shell and confirm to insert whether really whether correctly insert as existing method, therefore, need not the affirmation process, can confirm the insertion amount when inserting terminal, can produce high-quality distribution at short notice.

Especially, inspection control part 100 in the present embodiment, utilize the relative value that detects voltage signal of a pair of sensing plate, difference for example, realize not being attached to the change of the inspection signal (AC signal) that hobs on the electric wire and the control of deviation affects, the influences such as supply power change of checking signal are suppressed to minimum, make it become the device of high confidence level.

In addition, need not to insert the labyrinth of affirmation, simple in structure and cost is low, be easy to maintenance.

Utilize possibility on the industry

Distribution provided by the present invention does not damage terminal, in the distribution production process not with cut piezoelectricity The line contact can check the insertion amount of terminal, and need not to confirm process through special insertion, Has high confidence level.

Claims

1. the terminal insertion amount-inspecting device that the terminal that hobs wire end that adds AC signal inserts the insertion amount in the connector shell is fixed in an inspection, it is characterized in that having:

In order to carry out operation, be provided with taking in the connector maintaining part of the resettlement section that keeps above-mentioned connector to a plurality of cavity mounting terminal that are formed at above-mentioned connector shell;

In order to detect the AC signal of gathering the above-mentioned terminal in the cavity that is inserted in above-mentioned connector shell, with the bottom surface sections of the connector that is accommodated in above-mentioned connector maintaining part approaching the time, deviate from mutually and the pair of conductive plate of configuration concurrently;

Based on the voltage signal values that detects from above-mentioned each conductive plate, the terminal of differentiating additional above-mentioned AC signal inserts the discriminating gear of the insertion amount in the above-mentioned connector shell;

The terminal that above-mentioned discriminating gear will be applied with above-mentioned AC signal detects when inserting predefined insertion depth in the above-mentioned cavity detects voltage signal values Vz1, Vz2 substitution (Vz2)/(Vz1-Vz2), the computing income value pre-determines as fiducial value, the operation result that detect voltage signal values Vz1, Vz2 substitution (Vz2)/(Vz1-Vz2) of said reference value when determined terminal is inserted compared, thereby the terminal that detects above-mentioned additional AC signal inserts the insertion amount in the cavity.