JPH09106873A - Checker for earth terminal assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mainly detect half-fitting of an earth terminal assembly T3 to be mechanically coupled. SOLUTION: This checker is provided with a stopping member 12 and a pinching member 13 for pinching a connection part T31 of an earth terminal assembly T3. The device is also provided with a detecting member 15 for measuring the thickness D of the connection port T31 pinched by both members. The detected thickness D is compared with a normal thickness DR, and a control unit 30 detects half-fitting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection device for a ground terminal assembly.

[0002]

2. Description of the Related Art Referring to FIG. 5 which is a perspective view showing a schematic configuration of a conventional technique, generally, ground terminals T1 and T2 are circular or rectangular connecting portions T11 and T2 formed in an annular shape.
The electric wire W1 having the ground terminal T1 or the ground terminal T2 is inserted by inserting the connecting portions T11 and T21 into the continuity inspection unit 100.
Alternatively, the electrical connection with the electric wires W2 and W3 is inspected. The terminal fitting T1 is crimped to a single electric wire W1, and the terminal fitting T2 is a single electric wire W1.
The connection portion T21 is formed by stacking and welding a plurality of terminal members to which 2 and W3 are respectively connected.

In the continuity inspection unit 100, the metal piece 102 and the switch 103 are opposed to each other in the slit 101, and the contact portion T11 (T21) of the earth terminal T1 (or the earth terminal T2) to be inspected is in the slit 101. The metal piece 102 and the switch 1 by inserting
I was checking the continuity with 03.

[0004]

In the continuity inspection unit 100 as described above, the earth terminals T1 and T2 are exclusively used.
Only the electrical connection with the corresponding electric wires W1 to W3 was inspected. By the way, recently, as shown in FIG. 6 showing another aspect of the conventional ground terminal assembly, recently, the connecting portion T
31 and T32 in the circumferential direction (direction indicated by X in FIG. 6C)
The ground terminal assembly T3 (FIG. 6) in which the terminal members A (FIG. 6A) B (FIG. 6B) having the engaging claws T33 and T34 that are attached and detached by the rotating operation of FIG.
(C)) has been put to practical use (Actual exploitation 63-12543)
Reference). In this ground terminal assembly T3, in addition to the continuity inspection, it was necessary to inspect the mechanical connection state of each terminal member A, B. That is, the engaging claws T33 of the both,
When 34 is not properly meshed and so-called half-fitting occurs, the connecting portions T31, T32 of both terminal members A, B are connected.
However, there was a problem in that there was a rise in the surface, which interfered with the assembly process and caused poor conduction.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an inspection device for a ground terminal assembly, which can detect a half-fitting of a mechanically joined ground terminal assembly. There is.

[0006]

In order to solve the above problems, in the structure according to claim 1 of the present invention, the connecting portion is constituted by a plurality of terminal members which are laminated in a mechanically connected state. A grounding terminal assembly inspection device for inspecting a grounding terminal assembly, comprising a locking member for locking the above-mentioned connecting portion, and a structure capable of relative displacement with respect to the locking member. Based on the sandwiching member that sandwiches the connection portion between the fixing member and the terminal member in the stacking direction, the detection member that detects the thickness of the sandwiched connection portion, and the thickness detected by the detection member. And a control unit for determining whether the connection portion is acceptable or not, the inspection device for a ground terminal assembly.

In this structure, the connecting portion of the ground terminal assembly is positioned by the retaining member. Then, the fixing member and the sandwiching member are displaced relative to each other, whereby the thickness of the connecting portion is specified between the fixing member and the sandwiching member, and this thickness is detected by the detecting member.
The detected thickness is compared with the regular thickness by the control unit to make a pass / fail judgment.

According to a second aspect of the present invention, in the ground terminal assembly inspecting apparatus according to the first aspect, the control unit controls the thickness of the ground terminal assembly from the regular thickness when the detected thickness is different from the regular thickness. Also includes a means to indicate whether it is thick or thin. With this configuration, not only is it determined whether or not the detected thickness of the connection portion is the regular thickness, but it is also displayed that the thickness is thicker or thinner than the regular thickness.

According to a third aspect of the present invention, in the earth terminal assembly inspection apparatus according to the first or second aspect, the sandwiching member is pressed against the fixing member via the elastic member. With this configuration, when the connecting portion of the ground terminal assembly is sandwiched between the fixing member and the sandwiching member, the reaction force from the ground terminal assembly is absorbed by the action of the elastic member.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the present invention will be described in detail. 1 and 2 are schematic configuration diagrams of an inspection apparatus for a ground terminal assembly according to an embodiment of the present invention. With reference to these drawings, the inspection apparatus for the ground terminal assembly illustrated in the drawings, based on a detection unit 10 that inspects the ground terminal assembly T3 and a detection signal from the inspection unit 10,
The main element is a control device 30 that determines the state of the ground terminal assembly T3. In addition, 50 is a continuity inspection device,
This is for conducting a continuity inspection of the plurality of electric wires W connected to the earth terminal assembly T3 together with the inspection unit 10. Further, the ground terminal assembly T32
Are the same as those described in FIG. 6, and the same reference numerals as those in FIG.

The inspection unit 10 includes a base 11 and
The ground terminal assembly T3 is fixed to one end of the base 11.
The fixing member 12 for fixing the connecting portion T31 of the terminal member A and the terminal member A, which is configured to be relatively displaceable with respect to the fixing member 12 and has the fixed connecting portion T31 between the fixing member 12
Detecting a sandwiching member 13 sandwiched in the direction in which B is stacked, a toggle mechanism 14 that drives the sandwiching member 13 to move the two members toward or away from each other, and a gap between the fixing member 12 and the sandwiching member 13. The proximity sensor 15 as a member is included.

First, the base 11 is a metal plate member formed in a rectangular shape in plan view, and the fixing member 12 is fixed to one end portion in the longitudinal direction thereof by a bolt (not shown). The fixing member 12 includes a standing portion 12A standing above the base 11 and a base portion 11 from the end surface of the standing portion 12A.
And a protrusion 12B extending horizontally toward the other end of the ground terminal assembly T3. The protrusion 12B is penetrated through the terminal portion T31 of the ground terminal assembly T3, and the ground terminal assembly T3 is applied to the end surface 12C of the upright portion 12A. By scraping, the ground terminal assembly T3 can be fixed.

The sandwiching member 13 is the base 11
Of the base 11
It is a block body that is configured to be able to approach or separate from the fixing member 12 by a rail member (not shown) formed on the. On the surface 13A of the sandwiching member 13 facing the fixing member 12, the fixed ground terminal assembly T3 is provided.
The pressing protrusion 13B for pressing the connecting portion T31 of is extended horizontally.

The toggle mechanism 14 has a handle 14A. The handle 14A integrally includes a base end portion 141 pivotally supported via an axis A1 and a grip portion 142 continuous with the base end portion 141 by an attachment member 14B fixed to the other end portion of the base 11. Have One end of the link arm 14C has an axis A2 on the base end 141.
The other end of the link arm 14C is pivotally supported by the axis A3 with respect to the operation block 14D. This operation block 14D is based on the base 11
Is disposed on the other end side of the sandwiching member 13 and is displaceably attached to the base 11 between one end side and the other end side of the base 11. Then, by rotating the handle 14A around the axis A1 described above, the sandwiching member 13 can be displaced so as to be able to approach / separate from the fixing member 12 via the operation block 14D. As shown in FIG. 1, by rotating the handle 14A around the axis A1 toward the approach side (counterclockwise direction in FIG. 1), the pinching member 1413 is fixed to the fixing member 12 via the operation block 14D.
When the handle 14A is further rotated in the approaching direction after the ground terminal assembly T3 is sandwiched between them, as shown in FIG. 1, the axes A1, A2, A3 are substantially on a horizontal line. In addition, the sandwiching member 13 can be locked to the fixing member 12 via the operation block 14D. 1 and 2, A4
Is a contact pin of the link arm 14C, which is fixed to the base 11 via a side plate (not shown). Further, the operation block 14D and the sandwiching member 1
The bolt 14E and the compression coil spring 14F are employed in the examples of FIGS. The bolt 14E penetrates the operation block 14D from the handle 14A side in a loosely fitted state, and is screwed into the sandwiching block 13. Also, the head 1 of the bolt 14E
43 denotes a shoulder portion 14 formed on the operation block 14D.
It is accommodated in 4 so that it can be moved toward and away from it. Therefore, the bolt 14E
Is configured to be relatively displaceable with respect to the operation block 14D, and is integrally attached to the sandwiching member 13. Further, the compression coil spring 14F is arranged on the outer periphery of the bolt 14E, and is interposed between the operation block 14D and the sandwiching member 13 in a state where a predetermined initial deflection amount is set.

Therefore, when the handle 14A is driven toward the approaching side and the operating block 14D tries to be displaced toward the sandwiching member 13, first, this force is elastically transmitted to the sandwiching member 13 via the compression coil spring 14F. Is
As a result, the sandwiching member 13 approaches the fixing member 12, and finally the connecting portion T3 of the ground terminal assembly T3.
1 is sandwiched between the end surface 12C of the fixing member 12 and the pressing protrusion 13B of the sandwiching member 13.

In the illustrated example, the connecting portion T31 of the ground terminal assembly T3 is positioned by inserting and fixing it into the protrusion 12B of the fixing member 12 and by the pressing protrusion 13B of the sandwiching member 13. Since it is sandwiched between the end faces 12C of the above, the positioning accuracy of the ground terminal assembly T3 is improved, and it becomes possible to precisely sandwich the connection portion T31 and measure its thickness.

In that state, when the handle 14A further rotates toward the connection side, the sandwiching member 13 is displaced to the inspection position shown in FIG. In the example of FIG. 1, in this locked state, a bending margin L is formed between the sandwiching member 13 and the operation block 14D. That is, each of the terminal members A and B of the ground terminal assembly T3 can be stacked up to a maximum of eight, but when the connecting portion T31 formed by stacking this number of sheets is sandwiched,
A slight bending margin L is formed. As a result, the sandwiching member 13 can be used for any ground terminal assembly T.
Also when measuring the connection portion T31 of No. 3, the connection portion T31 is elastically biased by the compression coil spring 14F.
Will be sandwiched.

On the other hand, when the locked handle 14A is rotated to the separating side (clockwise direction in FIGS. 1 and 2), first, the operating block 14D separates in the opposite direction, and as a result, the compression coil spring 14F expands. At the same time, the shoulder 144 of the operation block 14D abuts on the bolt head 143. Further, as the handle 14E is turned to the separating side, the operation block 14D is integrally connected to the sandwiching member 13 via the bolt 143. As a result, the sandwiching member 13 also separates from the retaining member 12, and finally, as shown in FIG. It is displaced to the separated position shown.

Next, the proximity sensor 15 includes the fixing member 1
This is for detecting the thickness of the connecting portion T31 of the ground terminal assembly T3 from the approaching amount of the two members 12, 13 when the ground terminal assembly T3 is sandwiched by 2 and the sandwiching member 13. The proximity sensor 15 is a photoelectric element 15 attached to the facing surface 13A of the sandwiching member 13.
A and a reflection plate 15B that is attached to the end surface 12C of the fixing member 12 and reflects the light of the photoelectric element 15A, and its detection signal is sent to the control device 30 via the amplification unit 15D. To be given.

Next, the controller 30 inputs a standard data input key 32 for inputting the product number of the ground terminal assembly T3 to be inspected to the casing 31, and respective lamps 33, 34, 35, 36 which will be described later and which displays the inspection result. , And 37. FIG. 3 is a block diagram showing a schematic configuration of the control device 30. Referring to FIG.
A memory 41 is provided with a control unit 41 including U and other electrical components. The proximity sensor 15 of the inspection unit 10 and the continuity inspection device 50 are connected to the control unit 41, and the standard data input key 32 is connected as an input member. On the other hand, in the control unit 41, the thickness D of the connection portion T31 of the ground terminal assembly T3 detected by the proximity sensor 15 is a standard regular thickness DR.
GO lamp 33 that indicates that the normal thickness DR
Connected to an LO lamp 34 indicating that the thickness is thinner (that is, the number of terminal members is small) and an HI lamp 35 that is thicker than the regular thickness DR (that is, the number of terminal members is large). The lamps 33 to 35 can be blinked based on the procedure described later.

The memory 42 has a standard data area 4
21 and a detection data area 422 are provided.
In the standard data area 421, the inspection data of the ground terminal assembly T3 to be inspected is input. This inspection data includes a capacity for storing the product number of the ground terminal assembly T3 to be inspected, the regular thickness DR of the connecting portion T31, and the like for each type of the ground terminal assembly T3. Therefore, when the ground terminal assembly T3 to be inspected is specified by the standard data input key 32, the control section 41 can read the data of the specified ground terminal assembly T3. The detection data area 422 can store the thickness D of the connection portion T31 detected by the proximity sensor 15 of the inspection unit 10.

The continuity inspection device 50 is a well-known device which can detect the number of connections of each electric wire W and the electric conduction state of each electric wire W by using a demultiplexer, a multiplexer, a controller and the like. Is.
Next, the operation procedure of the above-described configuration will be described with reference to FIG. FIG. 4 is a flowchart showing the processing steps of the above-described earth terminal assembly inspection device.

In the above configuration, first, the standard data input key 32 of the control device 30 is operated to specify the type of the ground terminal assembly T3 to be inspected, and the data of the corresponding ground terminal assembly T3 is obtained. Standard data area 4
21 is read (step S1). Next, the ground terminal assembly T3 is fixed to the inspection unit 10 and sandwiched between the fixing member 12 and the sandwiching member 13 as described above to detect the thickness D of the connecting portion T31 (step S31). S2).

Then, the thickness of the ground terminal assembly T3 is inspected in the following steps. First, it is compared whether or not the detected thickness D of the connection portion T31 is equal to a reference regular thickness DR (step S3). In this embodiment, if the thickness D is equal to the regular thickness DR, G
The O lamp 33 is turned on to indicate that the tested ground terminal assembly T3 has a normal thickness (step S).
4). On the other hand, when the thickness D is different from the regular thickness DR in step S3, the thickness D is further reduced to the regular thickness DR.
Is determined whether or not it is thinner (step S5). When the thickness is thin, the LO lamp 34 indicating that the number of terminal members is small is turned on (step S6), and when the thickness is thick, the HI lamp 35 indicating that the number of terminal members is large.
Is turned on (step S7).

When each of the lamps 33 to 35 is selectively turned on as described above, the control section 41 determines that the measurement is further continued (step S8), and the standard data input key 3
It is determined whether or not a signal is input from 2 (step S
9). If the inspection work is finished, in step S8,
The worker finishes the work by turning off the power. Further, in the case of inspecting the ground terminal assembly T3 having the same part number, in step S9, the process returns to step S2. In the case of inspecting a different ground terminal assembly T3, the process returns to step S1 and repeats the above steps.

When the inspection of the earth terminal assembly T3 is completed and the thickness D of the connecting portion T31 is normal, the continuity inspection device 50 inspects the electric wire W connected to the earth terminal assembly T3. Done by. Thus, when the number N of the electric wires W is insufficient or a contact failure occurs, it is possible to detect the failure. As a result, even when the number of the terminal members A and B is small and a part of the terminal members A and B is "floating" due to half-fitting, the continuity inspection device 50 can be used.
By using together, it becomes possible to detect the shortage of the number of sheets and the half-fitting at the same time.

As described above, in the above-described embodiment, the acceptance / rejection determination is made based on the thickness D of the connecting portion T31 detected by the proximity sensor 15 to detect that the thickness is larger than the regular thickness D. As a result, the "floating" of the terminal members A and B due to the half fitting can be detected, and as a result, the half fitting of the connecting portion T31 of the ground terminal assembly T3 configured by combining the terminal members A and B with each other can be detected. There is a remarkable effect that can be done.

In particular, since the connecting portion T31 is positioned by using the fastening member 12 and the sandwiching member 13 and further sandwiched to measure the thickness, there is an advantage that a highly accurate measured value can be obtained. In addition, it is confirmed that the detected thickness D of the connection portion T31 is thinner than the regular thickness DR by L
Since it is displayed by the O lamp 34 and the HI lamp 35 indicates that it is thick, it is possible for an inspector to detect an excess or deficiency of the number of laminated terminal members A and B by the display. There is. That is, when the thickness D is thin, it is clear that the number of sheets is insufficient, and when the thickness D is thick, it is clear that "floating" or excessive number of sheets due to half-fitting occurs. It is possible to quickly understand the cause of the defect.

Further, since the reaction force from the ground terminal assembly T3 can be absorbed by the action of the compression coil spring 14F employed in the inspection unit 10, it is necessary to inspect the connection portion T31 having a different thickness. In addition to the above, when the terminal members A and B are lifted from each other due to the half-fitting, the engaging claws T33 and T3 of the terminal members A and B are also formed.
4 (see FIG. 6) is advantageous in that it can be prevented from being deformed by an excessive pinching load.

[0030]

As described above, according to the first aspect of the present invention,
In the configuration described, it is possible to detect the half-fitting of the connection portion of the ground terminal assembly configured by combining the terminal members by performing the pass / fail determination based on the thickness of the connection portion detected by the detection member. It has a remarkable effect that it can be done.

Particularly, in the structure according to the first aspect, since the connecting portion is positioned by using the fixing member or the sandwiching member, and the thickness is further sandwiched to measure the thickness, it is possible to obtain a highly accurate measured value. There is an advantage. Claim 2
In the configuration described, since it is displayed that the thickness of the detected connection portion is thicker or thinner than the regular thickness, the inspector can detect the excess or deficiency of the number of laminated terminal members by the display. Has the advantage that

Further, according to the third aspect of the invention, since the reaction force from the ground terminal assembly can be absorbed by the action of the elastic member, it is possible to inspect the connecting portions having different thicknesses. Even when the half-fitting occurs and the terminal members are lifted from each other, there is an advantage that the engaging claws of the terminal members can be prevented from being deformed by an excessive pinching load.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a grounding terminal assembly inspecting device according to an embodiment of the present invention.

2 is a schematic configuration diagram of the ground terminal assembly inspecting apparatus of FIG. 1. FIG.

FIG. 3 is a block diagram illustrating a schematic configuration of a control device.

FIG. 4 is a flowchart showing the processing steps of the above-described earth terminal assembly inspection device.

FIG. 5 is a perspective view showing a schematic configuration of a conventional technique.

FIG. 6 shows another embodiment of a conventional ground terminal assembly, (A) and (B) are schematic perspective views of terminal members,
(C) is a schematic perspective view of an earth terminal assembly formed by combining the terminal members of (A) and (B).

[Explanation of symbols]

 10 Inspection Unit 12 Locking Member 13 Clamping Member 14 Toggle Mechanism 15 Proximity Sensor (Detecting Member) 30 Control Device

Claims (3)

[Claims] 1. An earth terminal assembly inspection device for inspecting an earth terminal assembly, wherein a connecting portion is composed of a plurality of terminal members that are laminated in a mechanically connected state. A clamping member that is configured to be displaceable relative to the locking member that locks the portion, and that clamps the locked connection portion in the direction in which the terminal member is stacked between the locking member and the locking member. And a detection member that detects the thickness of the sandwiched connection portion, and a control unit that determines whether or not the connection portion is acceptable based on the thickness detected by the detection member. Assembly inspection equipment. 2. The earth terminal assembly inspecting device according to claim 1, wherein the control unit displays whether the detected thickness is thicker or thinner than the regular thickness when the detected thickness is different from the regular thickness. Including means. 3. The earth terminal assembly inspection device according to claim 1 or 2, wherein the sandwiching member is pressed against the fixing member via an elastic member.