JP3468129B2 - Long workpiece inspection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for inspecting a long work such as a washer hose for an automobile. 2. Description of the Related Art A washer nozzle for supplying a washer fluid to a windshield of an automobile is connected to a washer pump via a washer hose, and this washer pump is connected via another washer hose. Connected to the washer tank. [0003] The washer hose is made of, for example, a rubber hose having an inner diameter of 4 mm. This washer hose is used in the process of assembling automobiles, along with other long workpieces such as other linear parts (such as electric wires) or tubular parts.
It is assembled as a harness assembly, and this harness assembly is assembled to the body of the automobile. In the final step of the manufacturing of the harness assembly, a continuity test of the connectors of the assembled harness assembly is carried out, and a device called an inspection drawing board is used to confirm that the proper parts are properly arranged in various places. The used inspection process is performed. A continuity inspection jig for inspecting the continuity of the connector, a long work inspection jig for detecting the end of each long work, and the like are arranged at appropriate places on the inspection drawing board. The long work inspection jig is provided with a switch that conducts when the end of the long work is inserted, and this switch is connected to an inspection unit having an appropriate detection circuit built therein. An inspection worker attaches a plurality of connectors to the continuity inspection jig, attaches the ends of the plurality of long workpieces to the respective long workpiece inspection jigs, and then switches an inspection start switch of the inspection unit. Operate. When the signals from the switches of all the continuity inspection jigs and all the long work inspection jigs are appropriate, a display indicating that the harness assembly is non-defective is displayed. With respect to the washer hose, it is necessary to check that a proper washer hose is mounted at an appropriate position. In particular, the washer hose has two types with different outer diameters (one with an outer diameter of 6 mm,
It is necessary to make sure that an appropriate diameter is attached. Fig. 5 (a)
FIG. 5B is a front view, partially cut away, showing a configuration of an inspection jig for inspecting a washer hose, and FIG. 5B is a left side view thereof. An insertion hole 4 having an inside diameter necessary and sufficient to insert a regular washer hose 5 is formed in a holder base 3 sandwiched between a pair of L-shaped holders 1 and 2 fixed to the surface of an inspection drawing board. Have been. Below the holder base 3, a microswitch 6 is sandwiched between the holders 1 and 2 with its actuator 7 facing the insertion hole 4. With this configuration, when the end of the washer hose 5 is inserted into the insertion hole 4, the actuator 7 is pushed in, and the micro switch 6 is turned on. Therefore,
If the micro switch 6 is connected to an appropriate detection circuit of the inspection unit, the presence of the washer hose 5 can be confirmed. An inspection jig for inspecting a washer hose having an outer diameter of 6 mm and an inspection jig for inspecting a washer hose having an outer diameter of 7 mm are different in the inner diameter of the insertion hole 4 formed in the holder base 3. ing. Therefore, the end of the washer hose having an outer diameter of 7 mm cannot be inserted into the insertion hole 4 of the inspection jig for a washer hose having an outer diameter of 6 mm. This makes it possible to check whether or not the washer hose is legitimate. However, in the above-described configuration, the end of the washer hose 5 cannot be inserted into the insertion hole 4 so that the microswitch 6 cannot be maintained in a conductive state. In addition, there is a problem that workability of inspection work is poor. That is, since the actuator 7 of the micro switch 6 is biased by a spring in a cut-off state, when the hand is released from the washer hose 5, the micro switch 6 is cut off or the washer hose 5 is inserted into the insertion hole 4.
Or get away from it. Therefore, while the end of the washer hose 5 is inserted into the insertion hole 4 and the connector provided on the harness assembly is mounted on the continuity inspection jig, the washer hose 5 is pulled and the micro switch 6 is shut off. When the inspection start switch of the inspection unit is operated, the washer hose 5 must be pressed down. In the above-described configuration, a washer hose having an outer diameter of 6 mm can be easily inserted into the insertion hole 4 of the inspection jig for a washer hose having an outer diameter of 7 mm. Therefore, when a washer hose having an outer diameter of 6 mm is attached to a place where a washer hose having an outer diameter of 7 mm is to be attached, there is a problem that this defect cannot be detected. The outer diameter of 6 mm and the outer diameter of 7 mm are hardly distinguishable from each other in appearance, and the above-mentioned problem is an item that has been strongly demanded to be solved in strict inspection of the harness assembly. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned technical problems and to provide a long work inspection apparatus capable of detecting an end of a long work satisfactorily. is there. A specific object of the present invention is to provide a long work inspection apparatus capable of significantly improving the workability of a long work inspection operation. Another specific object of the present invention is to provide a long work inspection apparatus capable of satisfactorily discriminating and inspecting long works having different thicknesses. According to the first aspect of the present invention, there is provided an insertion hole having a size necessary and sufficient to allow an end of a long work to be inserted. A body having a recess formed in the body, the recess having a concave cylindrical surface that communicates with the insertion hole and is continuous with the insertion hole;
A slider housed in the recess and slidably displaceable in a direction approaching / separating from the concave cylindrical surface, the workpiece comprising a concave cylindrical surface facing the concave cylindrical surface and having substantially the same curvature as the insertion hole. have a receiving surface, the end of the long work
When the part is inserted into the insertion hole, the work receiving surface
Abuts the side surface of the end of the long work for a predetermined length,
Hold the end of the long work with the concave cylindrical surface of the recess
And the end of the long work is shorter than the length of the work receiving surface
A long workpiece inspection apparatus characterized by including a slider whose position does not fluctuate even when the slider comes out of a minute distance, and a detection element for detecting displacement of the slider. According to this configuration, when the end of the long work to be inspected is inserted into the insertion hole of the main body, the pressing force of the end of the long work acts on the slider , and the slider is indented.
Is displaced in a direction away from the concave cylindrical surface . When the displacement of the slider is detected by the detection element, it can be detected that the long work has been inserted into the main body. The slider is provided with a work on the side surface of the end of the long work.
Contact to Luke et al to receive using the clock receiving surface, even the ends of the long work is slightly moved along the longitudinal direction thereof, Sula
The position of Ida does not change. Therefore, the state in which the detection element detects insertion of the long work can be maintained regardless of the slight movement of the end of the long work. [0014] It is preferable that the slide guide surface for guiding the sliding displacement of the slider on the inner wall surface of the body is formed. Thus, the detection element can reliably detect the displacement of the slider. Further, it is preferable that an introduction guide surface for guiding the end of the long work to the work receiving surface is formed on the slider . Thus, the slider can be smoothly displaced with the insertion of the long work. [0015] Also, the slider preferably further comprises biasing means for resiliently biased towards the side of the end portion of the elongated workpiece. Thereby, the displacement of the slider in a state where the long work is not inserted into the insertion hole is suppressed, and after the long work is evacuated from the insertion hole,
The slider can be returned to the original position. Further, in the case where the end of the long work is held by the slider and the main body, there is an advantage that the holding force of the long work is increased. The detection element may be one having an actuator operated by displacement of a slider , for example, a micro switch. In this case, a spring or the like built in the detection element for urging the actuator to return to the initial position may also be used as the urging means. Detection device also or photo sensor for detecting the displacement of the slider optically, can be constituted by a magnetic sensor for detecting a displacement of the slider magnetically. A typical example of the long work is a washer hose for flowing a washer fluid supplied to a windshield of an automobile. In addition, other types of long work such as an air hose for an exhaust gas brake are used. The present invention is also applicable to inspection of a shaku work . Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view showing a configuration of a washer hose inspection jig as one embodiment of a long work inspection apparatus of the present invention in a state in which a front cover is removed, and FIG. 2 is a sectional surface line II in FIG. −II
FIG. 3 is an exploded perspective view thereof. The washer hose inspection jig 100 is used by being fixed at an appropriate position on an inspection drawing board 200 for inspecting a harness assembly including a washer hose. The washer hose inspection jig 100 includes a main body 10 made of, for example, a resin molded product, a microswitch 20 as a detection element housed in a recess 11 formed in the main body 10, and a micro switch 20 in the recess 11. A slider 30 as a displacement member slidably housed at a position facing the switch 20, and a cover 4 for covering the recess 11;
0. The main body 10 has a box-like shape which stands on the inspection drawing board 200, and has mounting flanges 12, 12 protruding from lower ends of both side surfaces thereof. The bolts 14, 14 are screwed into the drawing 200 for inspection through the bolt insertion holes 13, 13 formed in the mounting flanges 12, 12, so that the washer hose inspection jig 100 can be attached to the drawing 200 for inspection. Has been achieved. At a position near the upper end of one side surface of the main body 10,
An insertion hole 15 having an inner diameter necessary and sufficient to allow insertion of a regular washer hose 300 to be inspected is formed. The insertion hole 15 communicates with the recess 11, and the top surface 11 a of the recess 11 forms a concave cylindrical surface that is continuous with the inner wall surface of the insertion hole 15. The recess 11 has a slider 30
Is provided on the top surface 11a side, that is, on the upper side, and the micro switch housing space 11B for housing the micro switch 20 is provided on the lower side. A cylindrical top surface 11a is provided in the slider accommodation space 11A.
And a slider facing surface 16 facing the slider 30 is formed. On the other hand, screw holes 17, 17 for mounting the microswitch 20 are formed on the back surface of the microswitch housing space 11B.
A cutout 18 for drawing out the signal line 24 of the microswitch 20 is formed on the side. The slider housing space 11A is formed to be slightly narrower than the microswitch housing space 11B.
As a result, the step surfaces 19, on both sides in the width direction of the boundary between the slider accommodation space 11A and the microswitch accommodation space 11B
19 are formed. One of them functions as a regulating surface for regulating the actuator lever 21a of the microswitch 20. The micro switch 20 includes a switch body 2
2 and an actuator 21 for actuating a contact in the switch main body 22, and the bolts 23, 23 for inserting the switch main body 22 are screwed into the screw holes 17, 17 to thereby provide the microswitch housing space 11 </ b> B. At the main body 10. A signal line 24 extends from the lower surface of the switch body 22. This signal line 24 is connected to the microswitch housing space 11.
In B, it is routed under the switch body 22,
It is pulled out of the main body 10 through the notch 18 and connected to an inspection unit (not shown). The actuator 21 includes a switch body 22
And an actuator lever 21a provided on the upper surface of the switch body 22 so as to be capable of being tilted within a predetermined angle range. Operator 2
1b. The operation element 21b is a switch body 2
In the inner space of No. 2, it is in contact with a contact point (biasing means) constituted by a spring member. The contact urges the operating member 21b so as to protrude from the upper surface of the switch body 22, whereby the microswitch 20 is normally in a cut-off state. At this time, the position of the actuator lever 21a is as shown in FIG. 1, and this position is hereinafter referred to as a "blocking position". When an external force is applied to the actuator lever 21a and pressed against the switch main body 22, the operator 21b is pushed into the switch main body 22 against the spring force of the contact, and the micro switch 20 is brought into a conductive state. The position of the actuator lever 21a at this time is hereinafter referred to as a “conduction position”. When the external force applied to the actuator lever 21a is released, the operating element 21
b protrudes from the switch body 22, and the actuator lever 21a returns to the shut-off position. The slider 30 has a hose receiving surface 31 formed of a concave cylindrical surface having a curvature substantially equal to the inner wall surface of the insertion hole 15.
(Work receiving surface) is provided on the upper surface facing the top surface 11a. A conical tapered surface 32 (introduction guide surface) connected to the hose receiving surface 31 is formed on the end surface of the slider 30 on the insertion hole 15 side, and the hose receiving surface 31 is formed on the opposite end. A restricting surface 33 for restricting the tip end surface of the washer hose received at the end is formed. The slider 30 has its both end faces guided by both inner side faces 11b and 11c (slide guide faces) of the slider accommodating space 11A, so that a slide displacement along a direction approaching / separating from the top face 11a is achieved. It is possible. The displacement of the slider 30 in the direction away from the top surface 11a is regulated by the actuator lever 21a which contacts the bottom surface of the slider 30. In a normal state where the washer hose 300 is not inserted from the insertion hole 15, as shown in FIG.
It is located above the lower part of the inner wall surface. However, the lower edge 32 a of the tapered surface 32 is located at a height equal to or lower than the lower portion of the inner wall surface of the insertion hole 15. The cover 40 is a rectangular plate-like body, and has bolt insertion holes 41, 41, 4 at three locations.
1 is formed. And bolts 42, 42, 42
Through the bolt insertion holes 41, 41, 41, respectively.
The cover 40 is attached to the main body 10 by being screwed into the screw holes 44, 44, 44 formed in the main body 10. FIG. 4 shows a washer hose inspection jig 100.
FIG. 4 is a cross-sectional view for explaining an operation state of FIG. The inspection worker inserts the washer hose 300 to be inspected into the insertion hole 15 and pushes it further inward. As a result, the tip of the washer hose 300 is guided by the tapered surface 32 of the slider 30 and is guided to the hose receiving surface 31 to reach the state shown in FIG. In this process, the slider 30 slides and displaces in a direction approaching the switch body 22 (a direction away from the top surface 11a) against the spring force of the springy contact acting on the actuator lever 21a. The lever 21a is displaced to the conducting position. As a result, in the inspection unit connected to the microswitch 20, the presence of the washer hose 300 is detected. When the washer hose 300 is pushed into the insertion hole 15 and the hose receiving surface 31 of the slider 30, the distal end of the washer hose 300 is formed by the hose receiving surface 31 of the slider 30 and the top surface 11 a of the recess 11. It will be in the pinched state. Then, during the inspection operation, an external force acts on the harness assembly, and the washer hose 30
Even if 0 escapes by a minute distance shorter than the length L of the hose receiving surface 31, the position of the slider 30 does not change,
Therefore, the microswitch 20 is kept conductive. On the other hand, when the small diameter washer hose 301 is mistakenly attached to the harness assembly, even if the small diameter washer hose 301 is inserted into the insertion hole 15, the slide displacement of the slider 30 may be caused. No (the position indicated by the two-dot chain line in FIG. 4),
The microswitch 20 does not conduct. If a washer hose 302 having a larger diameter than the prescribed one is erroneously attached to the harness assembly, the large-diameter washer hose 302 is inserted into the insertion hole 15.
Can not be inserted into In this manner, the harness assembly to which the washer hoses 301 and 302 having a diameter outside the specified range are attached can be extracted as a defective product. When two types of washer hoses, a first type washer hose and a second type washer hose having a smaller diameter than the first type, are used in accordance with the type of the product, the first type and the second type wereher hoses are used. Hole 15 and slider 3 of dimensions and shape suitable for each type of washer hose
0 may be used. In this case, even if the second type of washer hose is inserted into the insertion hole 15 of the inspection jig corresponding to the first type of washer hose, the microswitch 20 does not conduct. Further, the first type of washer hose cannot be inserted into the insertion hole 15 of the inspection jig corresponding to the second type of washer hose. As described above, according to the washer hose inspection jig 100 of this embodiment, the washer hose 300
Is pushed into the main body 10 through the insertion hole 15, the pressing force from the washer hose 300 is obtained, and the slider 300
Is displaced, whereby the actuator 21 is operated and the microswitch 20 is turned on.
When the washer hose 300 is inserted into the main body 10, the hose receiving surface 31 of the slider 30 abuts on a side surface of the end of the washer hose 300 for a predetermined length, and together with the top surface 11 a of the recess 11, the washer hose 300. Between the ends. Therefore, even if the end of the washer hose 30 moves slightly, the position of the slider 30 does not change, and the conduction state of the microswitch 20 is maintained. Thereby, even if the washer hose 300 is not pressed down, the inspection of the washer hose 300 can be satisfactorily performed, so that the workability of the inspection work is remarkably improved. Moreover, in this embodiment, the urging force acting on the actuator 21 from the contact point of the microswitch 20 acts on the slider 30, so that the hose receiving surface 31 of the slider 30 and the recess 11 The end of the washer hose 300 can be securely held between the washer hose 300 and the top surface 11a. Further, since a spring member is not specially provided to bias the slider 30, the configuration is simple. Although the embodiment of the present invention has been described above, the present invention can be embodied in other forms . As described above, according to the present invention, even if the long work is slightly displaced in the longitudinal direction, the detecting element detects the insertion of the end of the long work. Since the position of the long work can be maintained, the end of the long work can be detected satisfactorily, and the workability of the inspection work of the long work can be remarkably improved. [0040]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a configuration of a washer hose inspection jig as one embodiment of a long work inspection apparatus of the present invention in a state where a front cover is removed. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is an exploded perspective view of the washer hose inspection jig. FIG. 4 is a sectional view for explaining an operation state of the washer hose inspection jig. FIG. 5 (a) is a front view of a conventional inspection jig for inspecting a washer hose, with a part thereof cut away, and FIG. 5 (b) is a left side view thereof. [Description of Signs] 100 Washer hose inspection jig 300 Regular washer hose 301 Washer hose 302 thinner than regular one Washer hose 10 thicker than regular one 10 Body 11 Recess 15 Insertion hole 20 Micro switch 21 Actuator 22 Switch body 30 slider 31 hose receiving surface 32 taper surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 1-1162601 (JP, U) JP-A 51-145579 (JP, U) JP-A 64-38504 (JP, U) JP-A 63- 135206 (JP, U) Japanese Patent Publication No. 46-1217 (JP, B1) Japanese Utility Model Publication No. 44-28748 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01B 21/10 G01B 5 / 08

Claims (1)

(57) [Claims 1] A main body having an insertion hole having a size large enough to allow the end of a long work to be inserted, and a recess formed in the main body. A recess having a concave cylindrical surface that communicates with the insertion hole and is continuous with the insertion hole; and a slider that is accommodated in the recess and that can slide and displace in a direction approaching / separating from the concave cylindrical surface. Te, opposed to the concave cylindrical surface, the insertion hole and have a curvature substantially equal to the work receiving surface made concave cylindrical surface of the end of the long work
When the part is inserted into the insertion hole, the work receiving surface
Abuts the side surface of the end of the long work for a predetermined length,
Hold the end of the long work with the concave cylindrical surface of the recess
And the end of the long work is shorter than the length of the work receiving surface
A long workpiece inspection device comprising: a slider whose position does not fluctuate even when the slider comes out of a minute distance; and a detection element that detects displacement of the slider.