JP3444343B2 - Continuity inspection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuity inspection device. 2. Description of the Related Art In general, a terminal assembly includes a wire harness and a subassembly (hereinafter, referred to as a wire harness).
It is often used in "wire assemblies" and the like to form various circuits. Such a terminal assembly is subjected to a continuity test to ensure its quality, and is checked for misalignment, poor continuity, and the like. A general continuity inspection device has a contact that can be electrically connected to a terminal, which is a component of a terminal assembly. Through this contact, the continuity of the terminal to be inspected is inspected. Was. FIG. 4 shows a terminal assembly TA.
FIG. 2 is an exploded perspective view showing one example. As shown in the figure, in the terminal assembly TA as described above, for example, a sleeve is provided on the outer periphery of a terminal T connected to the end of the electric wire W, as used in an oil pressure sensor of an automobile or the like. Material S is provided,
Further, there is a sleeve material S whose outer periphery is covered with a rubber cap G with a hood. Rubber cap with hood G
Is a rubber product integrally having a small-diameter tube portion G1 for pressing the sleeve material S and a hood portion G2 that opens continuously with the small-diameter tube portion G1. [0005] In the case of the terminal assembly TA having such a two-layer coating structure having the sleeve material S, the sleeve material S is covered by the rubber cap G with a hood.
It is difficult to see from the outside. Therefore, the sleeve material S
Since it was difficult to detect the presence or absence of the presence, it was not possible to inspect for forgetting to wear. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and is a continuity inspection device capable of easily and reliably detecting the presence or absence of a sleeve material in a continuity inspection of a terminal assembly whose terminals are covered with a two-layer covering structure. The challenge is to provide [0006] In order to solve the above-mentioned problems, the present invention provides a terminal connected to an end of an electric wire, a sleeve material covering the outer periphery of the terminal, and a sleeve material covering the outer periphery of the sleeve material. A continuity inspection device that conducts a continuity inspection by introducing a contact from the open end of the hooded rubber cap and the sleeve material and connecting the terminal to the terminal assembly having a two-layer coating structure having a rubber cap with a hood to be coated. there, the holder, elastic contact projecting from the front end of the holder forward
And attached to the outer periphery of this elastic contact so that it can be displaced back and forth.
Can be contacted only with the sleeve material of the terminal assembly
And is in contact with the above sleeve material
Between the sliding sleeve and the sliding sleeve
And a spring switch connected by rearward displacement . [0007] In the invention including this specific matter, at the time of the continuity inspection of the terminal assembly having the two-layer coating structure, the sleeve material detecting means also faces the inside of the terminal assembly, and the simple switch ON / OF is performed.
It becomes possible to detect the presence or absence of the sleeve material by F operation.
You. [0008] [Embodiment of the invention will be described below with reference to the accompanying drawings
A preferred embodiment of the present invention will be described in detail. FIG. 1 is an exploded perspective view showing an appearance of a continuity inspection device 10 according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the continuity inspection device 10 according to the embodiment of FIG. Referring to these drawings, a continuity inspection device 10 according to the illustrated embodiment is used by being fixed to an inspection drawing plate (not shown). In the following description,
As shown by the arrow in the figure, the explanation will be made with the worker side of the inspection drawing board as the front. In addition, members that are the same as the members described in FIG. 4 are given the same reference numerals, and descriptions thereof will be omitted. First, the continuity inspection device 10 in the illustrated embodiment includes a cylindrical casing 11 fixed to the inspection drawing plate. The casing 11 is formed such that the lower surface is set shorter than the upper surface in accordance with the inclination of the inspection drawing plate whose front surface is formed in a substantially rectangular shape and whose lower side is inclined so as to approach the worker. It is fixed in a posture protruding substantially horizontally from the plate. A pair of ears 11A is formed on the back side of the casing 11, and a screw 11B penetrating the ears 11A allows
The continuity inspection device 10 is fixed to the inspection drawing plate (not shown). At the front of the casing 11, a rectangular window 1
2 are formed. A holder 13 having a substantially rectangular parallelepiped shape is fixed to the inner surface of the window portion 12. A sleeve 14 is integrally formed on the front end surface of the holder 13 and protrudes forward. On the front end face of the sleeve 14,
An elastic contact 17, commonly known as a “banana plug”, is attached.
As shown in FIG.
8 and a well-known continuity inspection device (not shown) via a connection plug (not shown). Then, as described later, by introducing the contact 17 from the open end of the terminal assembly TA having the two-layer coating structure and connecting the terminal 17 to the terminal T, the conduction state of the terminal T can be inspected. I have. A sliding sleeve 20 is mounted on the outer periphery of the sleeve 14 so as to be displaceable back and forth. The outer circumference and thickness of the sliding sleeve 20 correspond to the outer circumference and thickness of the sleeve material of the terminal assembly TA to be inspected. A flange 21 extends from the rear end of the sliding sleeve 20, and the flange 21 also functions as a retaining member and a pressure receiving surface of a spring switch 24 described later. The sliding sleeve 20 is covered by a cover sleeve 22 to prevent the sliding sleeve 20 from being detached from the sleeve 14. Cover sleeve 2
2 includes a rectangular mounting plate 22A corresponding to the front end surface of the holder 13, a cylindrical portion 22B protruding from the front surface of the mounting plate 22A, and an inward flange 22C formed at the front end of the cylindrical portion 22B. As shown in FIG. 1, this is a resin molded product. The mounting sleeve 22A is attached with screws 23 (only one is shown in FIG. 1) to cover the sliding sleeve 20 with the cylindrical portion 22B and the inward flange 22C. This defines the amount of displacement of the flange 21 of the sliding sleeve 20 between the sliding sleeve 20 and the front end surface of the holder 13 while allowing the sliding sleeve 20 to protrude outward. The end face shape of the sliding sleeve 20 is determined by the length of protrusion of the sliding sleeve 20 by the inward flange 22C.
When the elastic contact 17 is in contact with the terminal T (see FIG. 3), the open end of the hooded rubber cap G is coupled with the outer periphery and the thickness of the sleeve material A. From the terminal assembly TA so as to be able to contact only the sleeve material S. Further, the sliding sleeve 2 is provided on the holder 13.
A pair of spring switches 24 facing each other is mounted on the back surface of the flange 21 of No. 0. Each spring switch 24 includes a sleeve 24A fixed to the holder 13 and a sleeve 24A.
A pusher 24B protruding from the front end of A in a relatively displaceable manner.
A coil spring 24C for urging the presser 24B forward from the inside of the sleeve 24A, and contacts A and B connected when the presser 24B retreats by a predetermined stroke against the urging force of the coil spring 24C. Contains. When the sliding sleeve 20 is in contact with the sleeve material S, the sliding sleeve 20 is retracted, and the pressing element 24 of the spring switch 24 is moved.
B is driven backward so that the contacts A and B can be connected. In the illustrated embodiment, the contact A of each spring switch 24 is electrically connected by a lead wire 26, while the contact B is connected to a connection plug (not shown) by lead wires 27 and 28, respectively.
They are connected in series. Accordingly, the switch is closed only when both spring switches 24 are connected at the same time. FIG. 3 is a schematic partial sectional view showing the operation of the continuity inspection device 10 according to the embodiment of FIG. 1, wherein (A) shows a case where a regular terminal assembly TA is inspected, and (B) shows a sleeve. This is a case where the terminal assembly TA to which the material S is not mounted is being inspected. Referring to FIG. 3, in the above configuration, the sliding sleeve 20 is also placed inside the hooded rubber cap G of the terminal assembly TA by bringing the open end of the terminal assembly TA close to the elastic contact 17. be introduced. At this time, when the sleeve material S is interposed as shown in FIG. 3A, the sliding sleeve 20 abuts on the sleeve S, so that the sliding sleeve 20 retreats relatively to the elastic contact 17 and the spring switch 24. On the other hand, when the sleeve material S is not interposed as shown in FIG. 3 (B), the sliding switch S is only introduced inside the elastic contact 17 integrally. , It is still open. As a result, the spring switch 24 as a discriminating unit is turned on in a normal case and turned off in a case where the user forgets to mount the switch.
Therefore, the presence or absence of the sleeve material S can be detected without visual observation. Therefore, the above-described embodiment has a remarkable effect that the presence or absence of the sleeve material S can be easily and reliably detected at the time of the continuity inspection of the terminal assembly having the two-layer coating structure without visual observation. The above embodiments are merely examples of preferred specific examples of the present invention, and the present invention is not limited to the above embodiments. It goes without saying that various design changes are possible within the scope of the claims of the present invention. As described above, according to the present invention, the presence or absence of the sleeve material covered on the rubber cap with a hood can be detected without visual inspection at the time of a continuity test. This has a remarkable effect that the presence or absence of the sleeve material covered with the can be easily and reliably detected.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an appearance of a continuity inspection device according to an embodiment of the present invention. FIG. 2 is a schematic partial cross-sectional view of the continuity inspection device according to the embodiment of FIG. 1; 3A and 3B are schematic partial cross-sectional views illustrating the operation of the continuity inspection device according to the embodiment of FIG. 1; FIG. 3A illustrates a case where a regular terminal assembly is inspected, and FIG. This is the case where a terminal assembly that has not been inspected is being inspected. FIG. 4 is an exploded perspective view showing an example of a terminal assembly. [Description of Signs] 10 Continuity inspection device 24 Spring switch (main part of sleeve material detecting means) 17 Resilient contact 20 Sliding sleeve (main part of sleeve material detecting means) TA terminal assembly T terminal S Sleeve material G with hood Rubber cap

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H01B 13/00 G01R 31/02 H01R 43/00

Claims (1)

(57) Claims 1. A terminal connected to an end of an electric wire, a sleeve material covering the outer periphery of the terminal, and a rubber cap with a hood covering the outer periphery of the sleeve material. the terminal assembly of two-layer coating structure, a conduction inspection apparatus for continuity testing by connecting the terminal to introduce contacts from the open end of the hood rubber cap and sleeve member, and holder, the holder a resilient contact projecting forwardly from the front end of the displaceable seated in its front and rear on the outer periphery of the elastic contact
To be able to contact only the sleeve material of the terminal assembly.
Is configured and is in contact with the above sleeve material
A sliding sleeve displaced rearward, and a spring connected by rearward displacement of the sliding sleeve
A continuity inspection device , comprising: a switch .