JPH0645899Y2 - Tweezer probe with adapter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a tweezers type probe with an adapter, and more specifically, it holds a minute device to be measured for measurement, or a fine measurement required for measurement. The present invention relates to a tweezer-type probe with an adapter, in which contacts of probe terminals used in contact with a point to be measured are brought as close as possible to each other and the positional relationship thereof can be maintained.

[Prior Art] As shown in FIG. 13, a tweezer probe generally has a pair of struts 2 inserted between the base end portions 7 and a pair of struts 2 fixed by screws 3. Casing 1,1
And to the casing 1 from the tip 4 to the contact 5
Is formed so as to have a probe terminal (not shown) that is projected and held, and a covered conductive wire 6 that is specially connected to these probe terminals. For example, the so-called four-terminal method suitable for low resistance measurement is used. It has already been provided as a four-terminal probe used.

The tweezers probe having such a structure is
Since the tips 4 have a substantially V-shape that is expanded, the spacing between the contacts 5 can be finely adjusted by changing the degree of pressing of the casing 1 against the tip 4 side. It is also possible to apply a clamping force to the contacts 5.

Therefore, the element to be measured such as a minute resistance element is sandwiched by using the contactor 5 of the probe terminal, or the contactor 5 is brought into contact with a minute point to be measured to perform a required measurement. The contactor 5 can be fitted in the socket.

[Problems to be Solved by the Invention] However, in the case of the above-mentioned tweezers type probe, since the probe terminal is integrally fixed to the casing 1, it is impossible to make the distance between the contacts 5 closer than a certain value. There is an inconvenience that it is structurally difficult, and even if it is attempted to contact a finer measured point, this cannot be done.

Further, since the tweezers type probe is urged in the opening direction so as to have a substantially V shape in which the tip portions 4 are expanded, the tweezers type probe immediately expands when the external pressure is removed.
At the time of measurement, there was the complexity of having to constantly apply a pressing force.

The present invention is intended to solve the above-mentioned problems that have been encountered in conventional tweezers-type probes, and the purpose thereof is to enable reliable contact with a finer point to be measured by combining adapters. , To provide a tweezers type probe with an adapter for improving workability.

[Means for Solving the Problems] The present invention has been made in order to achieve the above-mentioned object, and its structural feature is that a pair of probe terminals having a contactor projecting at the tip end thereof is accommodated. A probe main body in which a casing is connected to each other at a base end side thereof to expand the tip end side into a substantially V shape, and a projection is provided on each of the expansion facing surfaces, and the projection. A support part having a fitting part with the support part and introduced into the expansion facing surface of the probe body, and both ends of the support part having an inwardly bent hook part at its tip part. It is possible to engage the hook portion with the hook portion formed of a pair of supporting arms that are erected from the side, and the opening edge portion that defines the introduction port that can be pressed and attached to the tip end side. And a cover portion having a through-hole for allowing the contactor to be inserted therethrough. And a hook portion of a hooking portion having a supporting portion arranged on the expanding opposite surface of the probe body, the hook portion is forcibly attached to the tip portion, and is hooked on the collar portion of the cover portion. It is possible to clamp and fix the tip of the casing with an adapter.

[Operation] Therefore, when the probe main body is used as a single body without combining the adapter, it is possible to perform necessary measurement in the same manner as in the conventional case.

On the other hand, when attempting to bring the contact of the probe terminal into contact with a finer point to be measured, first, the support part in the hooking part that constitutes the adapter is introduced into the expansion facing surface of the probe body, The hooking portion is arranged by being fitted to the protrusion provided on the expansion facing surface.

Next, the cover portion that also constitutes the adapter is forcibly attached to the front end portion of the casing from the introduction port side, and the contactor is inserted through the through hole and arranged at a predetermined position.

In this case, a pair of supporting arms having a hook at the tip thereof are provided at the hooking portion, and a flange is provided at the peripheral edge of the opening defining the introduction port of the cover. The hook portion can be hooked on the collar portion.

At this time, the contact portion of the supporting portion of the hooking portion with respect to the expanding opposing surface of the probe body also acts as a new fulcrum when the tip portions of the casing are elastically deformed, and as a result, the distance between the contact elements is reduced. The contacts of the probe terminals can be brought into contact with finer points to be measured, as compared to the conventional case.

Moreover, such a proximity state of the contacts can still be maintained even when the pressing force in the closing direction on the probe body is released, and the workability can be improved accordingly.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view showing an embodiment of the present invention, which is composed of a probe main body 11, a cover portion 22 detachably attached to the probe main body 11, and a hook portion 31. It consists of an adapter 21 and

Among them, the probe main body 11 is a pair of casings 12 and 12 formed by using an insulating material having an appropriate shape, and a contact 17 is projected from a tip portion 14 of each of these casings 12, and a base end portion 18 is provided. A probe terminal (not shown) connected to the introduced coated wire 19 is accommodated and fixed.

These casings 12 are located in the vicinity of the base end portion 18, and via a connecting portion 13 formed by, for example, screwing 3 to the interposing pillar 2 as in the conventional structure shown in FIG. Thus, the tip portion 14 side is integrally connected while expanding in a substantially V shape.

As shown in FIG. 2, each of the expansion facing surfaces 15 of the probe body 11 is provided with one or more protrusions 16 for obtaining a fitting relationship with the hooking portion 31 of the adapter 21. Are arranged.

On the other hand, the adapter 21 is disposed on the side of the cover portion 22 that is attached to the tip end portion 14 of the casing 12 and that is hooked to the hooking portion 31, and the expansion facing surface 15 of the probe body 11. It is configured with a hook 31 that is

Of these, the cover portion 22 communicates with the inlet port 23 so as to enable pressure attachment to the side of the tip portion 14 of the casing 12 as shown in FIGS. It has a space portion 28 shape that substantially corresponds to the outer peripheral shape of the portion 14, and is entirely formed of an insulating material having a required strength. In this case, the opening edge portion 24 that defines the introduction port 23 is formed with a collar portion 25 that can be engaged with the hook portion 37 provided on the supporting arm portion 36 of the retaining portion 31. Furthermore, the cover part
The canopy portion 26 constituting 22 is formed with a through hole 27 formed in an appropriate shape, such as an oval hole, which allows the contactor 17 to be inserted when it is attached. ing.

On the other hand, the hooking portion 31 is formed by providing a fitting portion 33 for obtaining a fitting relationship with the projecting portion 16 arranged on the spread facing surface 15, as shown in FIG. Support portion 32 and a pair of supporting arm portions 36, 36 that have inwardly bent hook portions 37 at their tip portions and are erected at appropriate lengths from both end sides of the support portion 32.
Thus, the whole is formed of an insulating material having a required strength as shown in FIG. In this case, as shown in FIGS. 7 and 8, the fitting portion 33 of the support portion 32 is arranged in a corresponding positional relationship with, for example, the protrusion 16 of the expansion facing surface 15. It is formed such that the position thereof can be regulated by providing a recess 35 defined by the protrusion 34 provided.

Since this device is constructed as described above,
When the probe main body 11 alone is used without combining the adapter 21, the required measurement work can be performed in the same manner as the conventional example shown in FIG.

On the other hand, when it becomes necessary to bring the contactor 17 into contact with a point to be measured such as a more miniaturized pattern on a printed circuit board or a mounted component, the adapter 21 is attached to the probe body 11 by the following procedure. Used by wearing.

That is, when the contact 17 of the probe terminal is to be brought into contact with the point to be measured, as is apparent from FIGS. 2 and 12, first, the hooking portion 31 forming the adapter 21 is first formed.
Introducing the support portion 32 in the expansion facing surface 15 of the probe main body 11, the fitting portion 33 on the side of the projection portion 16 and the support portion 32 provided on the expansion facing surface 15 is shown in FIG. Assemble in this way, and position them correctly.

Next, the cover 22 which also constitutes the adapter 21 is forcibly fed from the inlet 23 side to the tip 14 of the casing 12 as shown in FIG. Insert 17 and attach it in place.

At this time, since the hooking portion 31 is provided with a pair of supporting arm portions 36, 36 having a hook portion 37 at the tip thereof, the cover portion 2
The hook portion 37 can be hooked on the collar portion 25 provided on the opening peripheral edge portion 24 that defines the introduction port 23 of FIG. 2 as shown in FIGS. 10 and 11.

In this case, the contact portion of the supporting portion 32 of the hooking portion 31 with respect to the expanding opposing surface 15 of the probe body 11 is a new portion when the tip portions 14 of the casing 12 are elastically deformed as shown in FIG. Can act as a fulcrum.

Therefore, the tips 14 of the casing 12 are more forcibly elastically deformed, and as a result, the distance between the contacts 17 protruding from the tips 14 can be made closer to each other than ever before, resulting in a finer pattern. Probe terminal contacts for various measured points
17 can be contacted.

Moreover, since such an approaching state of the contacts 17 is fixed by the adapter 21, it is possible to continue the approaching state even if the pressing force in the closing direction on the probe body 11 is released. The workability can be improved accordingly.

[Advantages of the Invention] As described above, according to the present invention, the support portion of the hooking portion that constitutes the adapter is introduced into the expansion facing surface of the probe body, and is provided on the expansion facing surface. It is fitted to the protruding part, and the cover part that also constitutes the adapter is forcibly adhered from the inlet side to the tip part of the casing, and the contactor is inserted through the through hole to the predetermined position. The adapter can be removably attached to the probe main body by disposing the hook and the hook on the side of the hook with respect to the flange on the side of the cover.

At this time, the contact portion of the support portion of the hooking portion with respect to the expanding opposing surface of the probe body can act as a new fulcrum for forcibly elastically deforming the tip portions of the probe body, resulting in contact. The distance between the children can be made closer to each other as compared with the conventional case, and it is possible to contact the finer points to be measured by the contacts.

Moreover, such an approaching state of the contacts can be maintained by the adapter, and the workability can be improved accordingly.

[Brief description of drawings]

FIG. 1 is a front view showing an example of the overall construction of the present invention, and FIG. 2 is an enlarged cross-sectional view of a notch of a main part showing the structure on the tip side thereof.
FIG. 3 is an overall view of an example of the cover section seen from the canopy side, FIG. 4 is a sectional view taken along the line AA of FIG. 3, FIG. 5 is a sectional view taken along the line BB of FIG. 3, and FIG. Fig. 7 is a side view showing an example of the entire shape of the latching part, Fig. 7 is a sectional view taken along the line CC of Fig. 6, Fig. 8 is a sectional view taken along the line DD of Fig. 6, and Figs. FIG. 12 is an explanatory view showing how the adapter is attached to the probe main body, FIG. 12 is an explanatory view showing how the adapter is related to the probe main body in FIG. 11, and FIG. 13 is a partially cutaway front view showing a conventional example. Is. 11 …… Probe body, 12 …… Casing, 13 …… Coupling part, 14 …… Tip part, 15 …… Expansion facing surface, 6 …… Projection part, 17 …… Contact, 18 …… Base end part, 19 …… Coated conductor, 21 …… Adaptor, 22 …… Cover, 23 …… Inlet, 24 …… Opening edge, 25 …… Brim, 26 …… Cover, 27 …… Through hole, 28… … Space, 31 …… Latching part, 32 …… Supporting part, 33 …… Mating part, 34 …… Projecting part, 35 …… Recessed part, 36 …… Support arm part, 37 …… Hook part

Claims (1)

[Scope of utility model registration request] 1. A pair of casings accommodating probe terminals each having a contact protruding at a tip end thereof are connected to each other at their base end sides to expand the tip end side into a substantially V shape. A probe main body in which a protrusion is provided on each of the expansion facing surfaces, and a support portion having a fitting portion for fitting with the protrusion and being introduced into the expansion facing surface of the probe body. ,
A hooking portion formed by a pair of supporting arm portions which have hook portions bent inward at their tip portions and are erected from both end sides of the supporting portion, and a pressing cover to the tip portion side. A cover portion having a flange portion capable of engaging with the hook portion at an opening edge portion that defines a wearable introduction port, and a canopy portion having a through hole that allows the contactor to be inserted therethrough; An adapter formed of a support part, and the hook part of the hooking part having the supporting part arranged on the opposite surface of the probe body to the collar part of the cover part forcibly attached to the tip part. A tweezers-type probe with an adapter, which is capable of being clamped and clamped to fix the tip of the casing with an adapter.