JP3036592B2 - Signal line measurement jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a signal line measuring jig, and more particularly to a signal line measuring jig for measuring an electric signal output from a device or the like via a connector having a pin contact type terminal.

[0002]

2. Description of the Related Art Conventionally, this kind of signal line measuring jig is used for a pin contact type connector terminal to be measured.
Measurement was performed by electrically contacting a socket or pin of an appropriate size as a contact.

[0003] Improve the electrical contact with the target terminal,
In order to maintain the contact state, see, for example, JP-A-62-640.
Japanese Patent Publication No. 81 describes a technique in which a contact is brought into contact with a target terminal by using a repulsive force of a spring, and the target terminal and the contact are satisfactorily brought into contact with each other by a retaining means at the time of connection.

Japanese Patent Application Laid-Open No. 64-672 discloses a method in which convex and concave grooves are provided on a contact side and a non-contact side, respectively, for fitting, and means for using a repulsive force of a coil spring for a contact. A technique for satisfactorily contacting and holding a target terminal and a contact is described.

[0005]

A first problem of the prior art is that it is necessary to change the measuring jig each time according to the diameter of the target connector pin.

The reason for this is that the connection between the connector pin and the contact is made by inserting the connector pin into a socket covering the contact, but the diameter of the socket is fixed.

A second problem of the prior art is that there are restrictions on the types of connectors that can be measured.

The reason is that a connector having no means for holding the connection between the connector pin and the contact may have an unstable electrical connection state.

An object of the present invention is to provide a jig capable of performing signal measurement regardless of the shape of a connector to be measured and the size of a pin contact.

Another object of the present invention is to provide a jig capable of satisfactorily connecting a pin contact to be measured and a contact and maintaining a connected state.

[0011]

According to the first aspect of the present invention, in the signal line detecting jig, the connector is made of a material having an insulating property and flexibility, regardless of the diameter of the connector terminal to be measured. An insertion portion into which a terminal can be inserted, made of a material having conductivity, provided in the insertion portion, a contact portion that comes into contact with the connector terminal to be measured, and made of a material having insulation and elasticity, Regardless of the shape of the connector terminal to be measured, the connector includes only the connector terminal together with the insertion portion, and has a holding portion that holds the contact state between the contact portion and the connector terminal to be measured. Is obtained.

According to the second aspect of the present invention, the insertion portion has a plurality of split end portions, and the end portion is formed so as to increase in thickness toward the end. The signal line measuring jig according to claim 1 is obtained.

According to the third aspect of the present invention, the signal line measuring jig according to the first or second aspect, wherein the holding portion is a sleeve mounted on an outer periphery of the insertion portion. Is obtained.

According to the fourth aspect of the present invention, the contact portion has a coil spring provided in the insertion portion, a contact attached to one end of the coil spring, and a contact spring attached to the other end of the coil spring. The signal line measuring jig according to any one of claims 1 to 3, wherein the signal line measuring jig is constituted by an attached conductive wire connecting plate.

According to a fifth aspect of the present invention, the contact portion is constituted by a contact plate provided in the insertion portion, and a conductive wire connection plate electrically connected to the contact plate. A signal line measuring jig according to any one of claims 1 to 3 is obtained.

[0016]

[Action] The insertion portion that serves to insert the connector terminal is
Since it is made of a material that is electrically insulated and has some flexibility, the inner diameter of the insertion portion can be adjusted according to the diameter of the connector terminal to be inserted.

Since the holding portion is made of a flexible material, an inward pressure is applied to the insertion portion by using the contracting action of the holding portion, so that the inner wall of the insertion portion is pressed against the connector terminal. As a result, the contact state between the contact portion and the connector terminal is maintained.

[0018]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a use state of the signal line measuring jig according to the first embodiment of the present invention. Referring to FIG. 1, the signal line measuring jig 1 includes a body portion 2, a contact portion 3, and a conducting wire portion 4, has a socket-like shape, and has a connector terminal 9 of a connector 13 to be measured. It is used to measure the electrical signal by inserting it.

Next, the body part 2, the contact part 3, and the conductor part 4
Will be described with reference to FIG. FIG. 2 is a longitudinal sectional view of the signal line measuring jig shown in FIG.

The body portion 2 has a built-in contact portion (contact portion) 3, a guide (insertion portion) 5 for inserting the connector terminal 9 and connecting to the contact 8, and covers the guide 5. An elastic sleeve (holding portion) 6. The guide 5 is made of a member that is electrically insulated and has a certain degree of flexibility, and has a cylindrical cylindrical guide 5A having a contact portion holding piece 10 for holding the position of the contact portion 3; As shown in FIG. 1, the guide tip 5B has a cracked tip, and the guide tip 5B increases in thickness toward the tip.

The combination of the guide tip 5B and the action of the elastic sleeve 6 tightening the guide tip 5B adjusts the inner diameter of the guide tip 5B in accordance with the diameter of the connector terminal 9 to provide a connector. The structure is such that the terminal 9 is pressed and fixed. The sleeve 6 is made of an electrically insulating member.

The contact portion 3 includes a contact 8 that contacts the connector terminal 9, a conductive coil spring 7, and a conductive wire connection plate 11. The contact portion 3 is built in the above-described guide cylindrical portion 5A. Contact part holding piece 1 attached to 5A
At 0, the conductor connection plate 11 is fixed. A contact 8 is provided at one end of the coil spring 7, and a wire connecting plate 11 is provided at the other end.
Are electrically and mechanically connected, respectively. The contact 8 can slide on the inner surface of the guide 5 according to the expansion and contraction of the coil spring 7, and the contact 8 can reliably contact the connector terminal 9 inserted from the guide tip 5B by the repulsive force of the coil spring 7. Has become.

One end of the conductor 4 is connected to the conductor connection plate 11 described above.
, And the other end is connected to the clip 12, and measurement is performed by a measuring instrument (not shown).

Next, the operation of the signal line measuring jig 1 of FIG. 1 will be described with reference to the drawings.

As shown in FIG. 1, for measurement, a connector terminal 9 is inserted into the signal line measuring jig 1 to make electrical contact with the contact 8.

When inserting the connector terminal 9 into the signal line measuring jig 1, the guide tip 5B is pressed against the connector terminal 9 as shown in FIG. The inserted connector terminal 9 comes into contact with the contact 8 as shown in FIG. FIG.
As shown in (1), even if the length of the connector terminal 9 to be inserted fluctuates somewhat, the contact 8 tries to push the connector terminal 9 by the repulsive action of the coil spring 7, so that a stable contact state can be obtained. In order to maintain this contact state, the inner wall surface of the guide distal end portion 5B is brought into pressure contact with the connector terminal 9 by the action of tightening the sleeve 6, and the contact state between the contact 8 and the connector terminal 9 is maintained. The guide 5 is made of an electrically insulated material such as vinyl chloride and has a certain degree of flexibility, so that the connector 5 can be inserted without being damaged. The guide tip 5B is broken into five pieces (see FIG. 1), and the thickness increases toward the tip.
The notch 21 is inserted in order to make the insertion smoothly. As a result, the inner diameter of the guide tip 5B is adjusted to the connector terminals 9a, 9b, 9c having different diameters as shown in FIGS. Becomes possible.

By the contact between the contact 8 and the connector terminal 9,
The electric signal to be measured includes a conductive coil spring 7 made of iron or the like, a conductive wire connecting plate 11, a conductive wire portion 4, and a clip 12.
Through the measuring device (not shown) to perform electric measurement.

Next, a second embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 5, a contact plate 31 is attached to the inner wall of the guide 5. The contact plate 31 is a conductive thin plate having a smooth surface, and is made of a member that can freely bend in the surface direction. By replacing the contact part 3 in FIG. 2 with this contact plate 31,
An electrical contact is made with the connector terminal 9 to be measured.
The contact plate 31 is connected to the conductor connection plate 11.
The connector terminal 9 inserted by the guide tip 5B is brought into pressure contact with the contact plate 31 attached to the inner wall of the guide tip 5B by the contracting action of the sleeve 6, and is securely and electrically and mechanically contacted and fixed. The electric signal is the contact plate 31
The electric power is transmitted to a measuring instrument (not shown) via the conductor connecting plate 11, the conductor part 4, and the clip 12, and electric measurement is performed.

According to the second embodiment of the present invention, in addition to the effects of the first embodiment, the contact terminal 9 is fixed to the guide 5 by pressure contact regardless of the length of the contact terminal 9 inserted into the guide 5. This has the effect that electrical contact can be reliably obtained.

[0032]

The first effect of the present invention is that it is not necessary to change the jig each time according to the diameter of the connector terminal to be measured.

The reason is that, depending on the diameter of the connector terminal,
This is because the diameter of the insertion portion into which the connector terminal is inserted is automatically adjusted.

The second effect of the present invention is that electrical measurement can be performed for a pin contact type connector terminal regardless of the shape of the connector.

The reason is that only the target connector terminal can be pressed and fixed at the insertion portion by the contracting action of the elastic holding portion to maintain the contact state with the contact portion.

A third effect of the present invention is that even if the signal line measuring jig of the present invention erroneously contacts a plurality of connector terminals at the same time, no electrical short circuit occurs.

The reason is that in the signal line measuring jig of the present invention, the holding portion is made of an insulating member.

The fourth effect of the present invention is that even if the length of the connector terminal to be measured in the insertion portion fluctuates slightly,
A stable contact with the contact is obtained.

The reason is that the repulsive action of the coil spring applies a force for the contact to push the connector terminal.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of a signal line measuring jig according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the signal line measuring jig shown in FIG.

FIG. 3 is a longitudinal sectional view showing the operation of the signal line measuring jig shown in FIG.

FIG. 4 is a longitudinal sectional view showing a contact state between a contact of the signal line measuring jig shown in FIG. 1 and a connector terminal.

FIG. 5 is a longitudinal sectional view of a signal line measuring jig according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Signal line measurement jig 2 Body 3 Contact part (contact part) 4 Conductor part 5 Guide (insertion part) 5A guide cylindrical part 5B Guide tip part 6 Sleeve (holding part) 7 Coil spring 8 Contact 9 Connector terminal 10 Contact part holding piece 11 Conductor connecting plate 12 Clip 13 Connector 21 Notch 31 Contact plate

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G01R 31 / 02,31 / 04 G01R 1/04 H01R 13 / 11,13 / 24

Claims (5)

(57) [Claims] 1. A signal line detection jig, comprising: an insertion portion made of a material having an insulating property and flexibility, into which a connector terminal to be measured can be inserted regardless of the diameter of the connector terminal; and a material having conductivity. And a contact portion provided on the insertion portion and in contact with the connector terminal to be measured, and a connector made of a material having insulation and elasticity, regardless of the shape of the connector terminal to be measured. A signal line measuring jig, comprising: a holding portion that holds only a terminal together with the insertion portion and holds a contact state between the contact portion and the connector terminal to be measured. 2. The signal according to claim 1, wherein the insertion portion has a plurality of broken end portions, and the front end portion is formed so as to increase in thickness toward the front end. Line measurement jig. 3. The signal line measuring jig according to claim 1, wherein the holding portion is a sleeve mounted on an outer periphery of the insertion portion. 4. A contact spring comprising: a coil spring provided in the insertion portion; a contact attached to one end of the coil spring; and a conductor connecting plate attached to the other end of the coil spring. The signal line measuring jig according to any one of claims 1 to 3, wherein the signal line measuring jig is configured. 5. The contact part according to claim 1, wherein the contact part comprises a contact plate provided in the insertion part, and a conductive wire connection plate electrically connected to the contact plate. The signal line measuring jig according to claim 1.