JP7276363B2 - adapter - Google Patents

Description

The present disclosure relates to adapters.

Communication devices such as mobile terminals include circuit boards that handle high-frequency signals. For this type of circuit board, inspection of circuit characteristics such as high-frequency characteristics is indispensable. A probe device having measurement pins is used for testing circuit characteristics. During testing, the measuring pins of the probe device connected to the measuring instrument come into contact with the terminals of the connector on the circuit board. In this state, the measuring device inputs and outputs signals to and from the circuit board through the probe device. Thereby, the circuit characteristics of the circuit board are inspected.

Prior to performing such inspections, the probe system is calibrated. This is to compensate for measurement errors caused by losses in the probe system. An adapter is used for calibration of the probe device (see, for example, Japanese Utility Model Registration No. 3225841 (Patent Document 1)). Hereinafter, this adapter is also referred to as a calibration adapter.

The calibration adapter consists of a substantially rectangular parallelepiped housing. The upper surface of the housing is formed with a concave portion that can be fitted with the probe device. A contact pin is provided in the recess at a position corresponding to the measuring pin of the probe device. A connection pin is connected to the contact pin, and the connection pin extends from the side surface of the housing. A connector portion is provided on the side surface from which the connection pin extends. A coaxial cable is attached to the connector portion, and the inner conductor (core wire) of the coaxial cable is connected to the connection pin. The connector portion has standard geometries so as to correspond to general-purpose coaxial cable connectors.

During calibration, the coaxial cable connected to the adapter is connected to a common measuring instrument with the probe device. A probe device fits into the recess of the adapter and the measuring pin of the probe device contacts the contact pin of the adapter. The adapter is thus attached to the probe apparatus. In this state, the measuring device inputs and outputs signals to and from the probe device. Thereby, calibration of the probe device is performed.

Utility Model Registration No. 3225841

At the site where calibration is performed, the adapter is fixed on a table and a coaxial cable is attached to the connector of the adapter. A coaxial cable attached to the adapter is brought out to protrude from one side of the housing. The pull-out direction of the coaxial cable is determined according to the usage environment. In other words, the pull-out direction of the coaxial cable is not uniform. Therefore, it is necessary to prepare an adapter having a connector portion formed on an appropriate side surface according to the usage environment.

In particular, when the connector of the circuit board to be inspected is a multi-pole connector, the connector has a plurality of terminals. The probe device has a measuring pin at a position corresponding to each terminal of the connector. In this case, the calibration adapter has contact pins at positions corresponding to the measurement pins. Depending on the mounting position of the contact pins, the distance of the contact pins from one side of the housing differs from the distance of the contact pins from another side of the housing.

As a result, the direction in which the coaxial cable is pulled out is determined according to the usage environment, and the distance from the contact pin to the connector portion, that is, the length of the connection pin, changes according to the required direction in which the coaxial cable is pulled out. That is, in the calibration adapter, the length of the signal transmission line changes depending on the direction in which the coaxial cable is pulled out. If the line length in the adapter changes, the accuracy of calibration will not be stable.

An object of the present disclosure is to provide an adapter capable of accurately calibrating a probe device regardless of the usage environment.

An adapter according to the present disclosure is attachable to a probe device having measurement pins. The adapter includes a first housing and a second housing. The first housing has a top surface and a bottom surface. The first housing includes a main fitting portion that can be fitted with the probe device, a first fitting portion, and a through hole. The main fitting portion is formed on the upper surface of the first housing. The first fitting portion is formed on the bottom surface of the first housing. The through hole penetrates from the main fitting portion to the first fitting portion. The second housing has a top surface and side surfaces. The second housing includes a second mating portion, contact pins, connecting pins, and a connector portion for connecting the coaxial cable to the connecting pins. The second fitting portion is formed on the upper surface of the second housing. The second fitting portion fits with the first fitting portion. The contact pin is inserted through the through hole of the first housing. A contact pin is connected to the contact pin and extends from the side of the second housing. The connector portion is provided on the side surface of the second housing.

According to the adapter according to the present disclosure, it is possible to accurately calibrate the probe device regardless of the usage environment.

FIG. 1 is a perspective view showing the essential parts of the probe device. FIG. 2 is a perspective view showing the overall configuration of the adapter of the first embodiment; FIG. 3 is a top view of the adapter of the first embodiment; FIG. 4 is a cross-sectional view taken along line IV--IV of FIG. 3. FIG. 5 is a cross-sectional view taken along line VV of FIG. 3. FIG. 6 is a bottom view of the first housing in the adapter of the first embodiment; FIG. 7 is a top view of a second housing in the adapter of the first embodiment; FIG. FIG. 8 is a top view showing a modification of the adapter of the first embodiment; FIG. 9 is a top view showing a modification of the adapter of the first embodiment; FIG. 10 is a top view showing a modification of the adapter of the first embodiment; 11 is a bottom view of the first housing in the adapter of the second embodiment; FIG. 12 is a bottom view of the first housing in the adapter of the third embodiment; FIG. FIG. 13 is a bottom view of the first housing in the adapter of the fourth embodiment; FIG. 14 is a top view of the second housing in the adapter of the fourth embodiment;

Embodiments of the present disclosure will be described below. In the following description, the embodiments of the present disclosure will be described with examples, but the present disclosure is not limited to the examples described below. Although specific numerical values and specific materials may be exemplified in the following description, the present disclosure is not limited to those exemplifications.

An adapter according to embodiments of the present disclosure is attachable to a probe device having measurement pins. The adapter includes a first housing and a second housing. The first housing has a top surface and a bottom surface. The first housing includes a main fitting portion that can be fitted with the probe device, a first fitting portion, and a through hole. The main fitting portion is formed on the upper surface of the first housing. The first fitting portion is formed on the bottom surface of the first housing. The through hole penetrates from the main fitting portion to the first fitting portion. The second housing has a top surface and side surfaces. The second housing includes a second mating portion, contact pins, connecting pins, and a connector portion for connecting the coaxial cable to the connecting pins. The second fitting portion is formed on the upper surface of the second housing. The second fitting portion fits with the first fitting portion. The contact pin is inserted through the through hole of the first housing. A contact pin is connected to the contact pin and extends from the side of the second housing. The connector portion is provided on the side surface of the second housing (first configuration).

In the calibration adapter having the first configuration, the second fitting portion is fitted with the first fitting portion to integrate the second housing with the first housing. In this adapter, contact pins included in the second housing pass through through holes included in the first housing. In the main fitting portion of the first housing, the through hole is located, for example, in correspondence with the measuring pin of the probe device. For this purpose, the contact pins are provided at positions corresponding to the measuring pins of the probe device. Furthermore, in this adapter the contact pins are connected to the contact pins in the second housing. The connecting pin extends from one side of the second housing and has a connector portion on that side.

A coaxial cable is attached to the connector portion of the adapter at the site where the calibration is performed. A coaxial cable attached to the adapter is pulled out to protrude from one side of the second housing. The pull-out direction of the coaxial cable is determined according to the usage environment. Here, when the second fitting portion is fitted with the first fitting portion, the connector portion can be arranged at an appropriate position according to the pull-out direction of the coaxial cable required according to the usage environment. That is, the coaxial cable can be pulled out in an appropriate direction. Moreover, the distance from the contact pin to the connector portion, that is, the length of the connection pin remains unchanged. That is, in the adapter, the line length for transmitting signals is unchanged. Therefore, according to the calibration adapter of the first configuration, the calibration of the probe device can be accurately performed regardless of the usage environment.

In the adapter of the first configuration, the first fitting portion preferably has a concave shape and the second fitting portion has a convex shape (second configuration).

In the case of the calibration adapter having the second configuration, the convex second fitting portion fits with the concave first fitting portion.

However, in the adapter having the first configuration, the first fitting portion may be convex and the second fitting portion may be concave. In this case, the concave second fitting portion fits with the convex first fitting portion.

A typical example of the adapter of the first or second configuration is a recess in which the main fitting portion can be fitted with the probe device in the first housing (third configuration). However, the main fitting portion may be a convex portion that can be fitted with the probe device.

An adapter of any one of the first to third configurations preferably includes the following configurations. In the first housing, the first fitting portion has a shape rotationally symmetrical about the first axis. The first axis is at a position corresponding to the measuring pin in an axis perpendicular to the top and bottom surfaces of the first housing. The through hole is along the first axis. In the second housing, the second fitting portion has a shape rotationally symmetrical about a second axis coinciding with the first axis. The contact pin extends along the second axis (fourth configuration).

In a fourth configuration of the calibration adapter, the through hole included in the first housing is along the first axis at a position corresponding to the measuring pin of the probe device. A contact pin contained in the second housing extends along a second axis coinciding with the first axis. This ensures that the contact pins are provided at positions corresponding to the measuring pins of the probe device. Further, regarding the first fitting portion and the second fitting portion that are fitted to each other, the first fitting portion has a shape rotationally symmetrical about the first axis, and the second fitting portion It has a rotationally symmetrical shape about a second axis coinciding with the axis. Therefore, when the second fitting portion is fitted with the first fitting portion, the second housing portion is attached to the first housing portion in the first axial direction according to the pull-out direction of the coaxial cable required according to the use environment. (Second axis) can be shifted around. In this case, the connector section can be arranged at an appropriate position. That is, the coaxial cable can be pulled out in an appropriate direction.

In the adapter of the fourth configuration, the cross-sectional shape of the first fitting portion and the second fitting portion that fit together is preferably circular (fifth configuration).

According to the calibration adapter having the fifth configuration, when the second fitting portion is fitted to the first fitting portion, the second housing is shifted by an angle around the first axis (second axis) with respect to the first housing. is not restricted. Therefore, it is possible to freely set the pull-out direction of the coaxial cable.

The adapter of the fifth configuration preferably includes a rotation suppression mechanism that suppresses rotation of the second fitting portion about the axis with respect to the first fitting portion (sixth configuration).

If the cross-sectional shape of the first fitting portion and the second fitting portion is circular like the adapter of the fifth configuration, as described above, the second fitting portion about the first axis (second axis) with respect to the first housing There is no restriction on the housing shift angle. In this case, the second housing may unexpectedly rotate about the axis with respect to the first housing. In this regard, the calibration adapter having the sixth configuration can prevent such a situation.

In the adapter of the sixth configuration, in a typical example, the rotation suppressing mechanism is composed of a wall provided on the bottom surface of the first housing and a side surface of the second housing that contacts this wall (7th configuration).

According to the calibration adapter of the seventh configuration, the side surface of the second housing comes into contact with the wall provided on the first housing, causing the second housing to rotate about the axis with respect to the first housing. can be prevented. However, in this case, the shift angle of the second housing about the first axis (second axis) with respect to the first housing is limited.

As the rotation suppressing mechanism, the second housing may be joined to the first housing while the second fitting portion is fitted to the first fitting portion. The bonding method is not particularly limited, but is preferably bonding with an adhesive, soldering, or welding.

In the adapter of the fourth configuration, the cross-sectional shape of the first fitting portion and the second fitting portion that fit together may be a regular polygon (eighth configuration).

According to the calibration adapter having the eighth configuration, by simply fitting the second fitting portion to the first fitting portion, the second housing can be prevented from unexpectedly rotating about the axis with respect to the first housing. can be prevented. However, in this case, the shift angle of the second housing about the first axis (second axis) with respect to the first housing is limited to a predetermined angular pitch.

In a typical example, the cross-sectional shape of the first fitting portion and the second fitting portion is square. The cross-sectional shape may be an equilateral triangle, a regular pentagon, a regular hexagon, or the like. For example, when the cross-sectional shape is square, the offset angle of the second housing is a pitch of 90°. When the cross-sectional shape is an equilateral triangle, the shift angle of the second housing is a pitch of 120°. When the cross-sectional shape is a regular pentagon, the shift angle of the second housing is a pitch of 72°. When the cross-sectional shape is a regular hexagon, the shift angle of the second housing is a pitch of 60°.

The cross-sectional shape of the first fitting portion and the second fitting portion that fit together may be rectangular. In this case, the shift angle of the second housing is 180° pitch.

A specific example of the calibration adapter of this embodiment will be described below with reference to the drawings. The same reference numerals are given to the same or corresponding parts in the drawings, and the description thereof will not be repeated. First, a probe device that is calibrated by the adapter of this embodiment will be described.

[Probe device 101]
FIG. 1 is a perspective view showing essential parts of a probe device 101 that is calibrated by the adapter of this embodiment. FIG. 1 shows how the probe device 101 is viewed obliquely from below.

Referring to FIG. 1, probe device 101 is used to inspect circuit characteristics of a circuit board. A circuit board to be inspected has a connector, and the connector has terminals.

The probe device 101 includes a substantially rectangular parallelepiped main body 110 and a measuring pin 120 protruding from the bottom surface 110 a of the main body 110 . A measuring pin 120 is supported by the body 110 . For example, the measuring pin 120 is applied to the body 110 by an elastic body (e.g., a compression coil spring), which is not shown, and is applied with an elastic force directed downward (projecting direction), while being directed upward (opposite to the projecting direction). supported to allow movement; However, the measuring pin 120 is electrically insulated from the body 110 .

The measurement pin 120 is provided at a position corresponding to the terminal of the connector to be inspected. If the connector is a multipolar connector having a plurality of terminals, the installation position of the measurement pin 120 changes according to the positions of the terminals of the connector. A pair of protrusions 111 are formed on the bottom surface 110a of the main body 110 . A measuring pin 120 is arranged in the area between the protrusions 111 .

In this embodiment, body 110 is electrically conductive. For example, the material of the main body 110 is metal. This metal is for example stainless steel. The measuring pin 120 is electrically conductive. For example, the material of the measuring pin 120 is metal. This metal is for example beryllium copper.

Such a probe device 101 is connected to a measuring instrument (eg network analyzer) via a coaxial cable (not shown). For example, in the probe device 101 , the inner conductor (core wire) of the coaxial cable is connected to the top of the measuring pin 120 . The outer conductor (ground conductor) of this coaxial cable is connected to the main body 110 .

When inspecting the circuit board, the main body 110 of the probe device 101 is fitted with the connector to be inspected. This brings the measuring pin 120 of the probe device 101 into contact with the terminal of the connector. At this time, the projecting portion 111 of the main body 110 fits into the recessed portion of the connector. This makes the position of the body 110 of the probe device 101 with respect to the connector more stable. In this state, the measuring instrument inputs and outputs signals to and from the circuit board through the probe device 101 (measurement pin 120) and the connector. Thereby, the circuit characteristics of the circuit board are inspected.

[Adapter 1 for calibration of the first embodiment]
The calibration adapter 1 of the first embodiment will be described with reference to FIGS. 2 to 10. FIG. The adapter 1 of the first embodiment is used for calibration of the probe device 101 shown in FIG. It should be noted that top, bottom, front, rear, right and left are used herein to describe the configuration of the adapter 1 and the position of the probe apparatus 101 relative to the adapter 1 . However, these directions are used for convenience only, and the configuration of the adapter 1 and the position of the probe device 101 with respect to the adapter 1 are not limited to these directions. For example, the top and bottom may be reversed. Front and rear may be reversed. Right and left may be reversed.

FIG. 2 is a perspective view showing the overall configuration of the adapter 1 of the first embodiment. FIG. 3 is a top view of the adapter 1. FIG. 4 is a cross-sectional view taken along line IV--IV of FIG. 3. FIG. 5 is a cross-sectional view taken along line VV of FIG. 3. FIG. FIG. 6 is a bottom view of the first housing 10 in the adapter 1 of the first embodiment. FIG. 7 is a top view of the second housing 20 in the adapter 1 of the first embodiment. FIG. 2 shows how the adapter 1 is viewed obliquely from above.

Referring to FIG. 2 , adapter 1 includes first housing 10 and second housing 20 . A second housing 20 is arranged below the first housing 10 . The adapter 1 is configured by combining the second housing 20 with the first housing 10 .

Referring to FIGS. 2 to 6, in the present embodiment, first housing 10 has a substantially rectangular parallelepiped outer shape. The first housing 10 has a top surface 10a, a bottom surface 10b and four side surfaces 10c, 10d, 10e and 10f. The top surface 10a and the bottom surface 10b are rectangular. For convenience, the four sides 10c, 10d, 10e and 10f are also referred to herein as the front side 10c, the rear side 10d, the right side 10e and the left side 10f, respectively. The front side surface 10c and the rear side surface 10d are respectively connected to corresponding short sides of the top surface 10a (bottom surface 10b). The right side 10e and the left side 10f are connected to corresponding long sides of the top surface 10a (bottom surface 10b).

A main fitting portion 13 that can be fitted to the main body 110 of the probe device 101 is formed on the upper surface 10 a of the first housing 10 . Each figure shows an example in which the main fitting portion 13 is a concave portion. The main fitting portion 13 is not limited to a recess as long as it can be fitted with the main body 110 of the probe device 101 . For example, the main fitting portion 13 may be a convex portion. A pair of holes 14 are formed in the main fitting portion 13 . The hole portion 14 is provided at a position corresponding to the projecting portion 111 of the main body 110 of the probe device 101 .

A recessed first fitting portion 11 is formed on the bottom surface 10 b of the first housing 10 . The first fitting portion 11 has a shape that is rotationally symmetrical about the first axis A1. The first axis A<b>1 is perpendicular to the top surface 10 a and the bottom surface 10 b and is located at a position corresponding to the measuring pin 120 of the probe device 101 . In this embodiment, the cross-sectional shape of the first fitting portion 11 is circular. The cross section here means a cross section when the first fitting portion 11 is cut along a plane perpendicular to the first axis A1. In the case of this embodiment, since the first fitting portion 11 has a concave shape, the inner peripheral shape of the first fitting portion 11 is circular.

A through hole 12 is provided in the first housing 10 along the first axis A1. In this specification, this through-hole 12 is also called the first through-hole 12 for convenience. The first through hole 12 penetrates the first housing 10 from the main fitting portion 13 to the first fitting portion 11 . From another point of view, the first through hole 12 is provided along the central axis (first axis A1) of the first fitting portion 11 . The cross-sectional shape of the first through hole 12 is circular.

Furthermore, in the present embodiment, the bottom surface 10b of the first housing 10 is provided with a first wall 15 and a second wall 16 each facing the first axis A1. The first wall 15 extends from the right side 10e to the left side 10f near the front side 10c and parallel to the front side 10c. The second wall 16 faces the first wall 15 and extends from the right side 10e to the left side 10f in parallel with the front side 10c. The shortest distance from the first axis A<b>1 to the first wall 15 is determined by the geometry of the second housing 20 . In this embodiment, as will be described later, the outer shape of the second housing 20 is generally a rectangular parallelepiped, and its upper surface 20a is square. The shortest distance from the first axis A<b>1 of the first housing 10 to the first wall 15 is half the length of one side of the upper surface 20 a of the second housing 20 . The same thing as the first wall 15 is applied to the second wall 16 as well.

2 to 5 and 7, in this embodiment, the outer shape of the second housing 20 is generally rectangular parallelepiped. The second housing 20 has a top surface 20a, a bottom surface 20b and four side surfaces 20c, 20d, 20e and 20f. The top surface 20a and bottom surface 20b are square. For convenience, the four sides 20c, 20d, 20e and 20f are also referred to herein as the first side 20c, the second side 20d, the third side 20e and the fourth side 20f, respectively. The first side surface 20c, the second side surface 20d, the third side surface 20e, and the fourth side surface 20f are connected to corresponding sides of the top surface 20a (bottom surface 20b).

A convex second fitting portion 21 is formed on the upper surface 20 a of the second housing 20 . The second fitting portion 21 has a shape that is rotationally symmetrical about the second axis A2. The second axis A2 coincides with the first axis A1 of the first housing 10. As shown in FIG. In this embodiment, the cross-sectional shape of the second fitting portion 21 is circular. The cross section here means a cross section when the second fitting portion 21 is cut along a plane perpendicular to the second axis A2 (first axis A1). In the case of this embodiment, since the second fitting portion 21 has a convex shape, the outer peripheral shape of the second fitting portion 21 is circular. The second fitting portion 21 has a shape that fits into the first fitting portion 11 .

The second housing 20 has an interior space 24 . A through hole 22 is provided in the second housing 20 along the second axis A2 (first axis A1). In this specification, this through-hole 22 is also called the second through-hole 22 for convenience. The second through hole 22 penetrates the second housing 20 from the internal space 24 to the second fitting portion 21 . From another point of view, the second through hole 22 is provided along the central axis (second axis A2) of the second fitting portion 21 . The cross-sectional shape of the second through hole 22 is circular.

A cylindrical bushing 31 is inserted into the second through hole 22 . Bushing 31 is made of an insulating material. A contact pin 30 is inserted into the bushing 31 . The contact pin 30 extends along the second axis A2 (first axis A1). The contact pin 30 is fixed to the second fitting portion 21 of the second housing 20 via a bushing 31 .

A lower end portion 30 b of the contact pin 30 is arranged in the internal space 24 of the second housing 20 . A connection pin 40 is connected to the lower end portion 30 b of the contact pin 30 . A connection method is not particularly limited. The connecting method may be simple contact or soldering. The connection pin 40 extends outward from, for example, the fourth side surface 20f among the four side surfaces 20c, 20d, 20e and 20f of the second housing 20. As shown in FIG.

A connector portion 23 is provided on the fourth side surface 20f from which the connection pin 40 extends. In a typical example, the connector section 23 is an SMA (Sub Miniature Type A) type connector. For example, the connector portion 23 includes a cylindrical outer conductor portion 23a. The outer conductor portion 23 a is integrally formed with the second housing 20 . A cylindrical bushing 41 is inserted into the outer conductor portion 23a. Bushing 41 is made of an insulating material. A connection pin 40 is inserted into the bushing 41 . The connection pin 40 is fixed to the connector portion 23 of the second housing 20 via the bushing 41 while being connected to the contact pin 30 .

In this embodiment, the first housing 10 and the second housing 20 are conductive. For example, the material of the first housing 10 and the second housing 20 is metal. This metal is for example stainless steel. The contact pins 30 and the connection pins 40 are electrically conductive. For example, the material of the contact pins 30 and the connection pins 40 is metal. This metal is for example beryllium copper.

In the adapter 1 of the present embodiment, the second fitting portion 21 fits with the first fitting portion 11 to integrate the second housing 20 with the first housing 10 . As the second fitting portion 21 is fitted with the first fitting portion 11 , the contact pin 30 is inserted through the first through hole 12 together with the bushing 31 . The tip (upper end) of the contact pin 30 is exposed to the main fitting portion 13 of the first housing 10 . In the main fitting portion 13 of the first housing 10 , the first through hole 12 is along the first axis A<b>1 and the first axis A<b>1 is at a position corresponding to the measuring pin 120 of the probe device 101 . Therefore, the contact pin 30 is provided at a position corresponding to the measuring pin 120 of the probe device 101 .

Furthermore, in the adapter 1 of this embodiment, the connection pin 40 is connected to the contact pin 30 in the second housing 20 . The connection pin 40 extends from the fourth side surface 20f, and the connector portion 23 is provided on the fourth side surface 20f. 2 to 5, when the second fitting portion 21 is fitted with the first fitting portion 11, the fourth side surface 20f of the second housing 20 is the same as the left side surface 10f of the first housing 10. turn direction. Therefore, the connector portion 23 is arranged on the left side surface 10f side of the first housing 10 . Also, in this state, the first side surface 20 c of the second housing 20 is in contact with the first wall 15 provided on the bottom surface 10 b of the first housing 10 . A second side surface 20 d of the second housing 20 contacts a second wall 16 provided on the bottom surface 10 b of the first housing 10 . However, a slight gap may be provided between the first side surface 20c and the first wall 15 that are in contact with each other. Similarly, a slight gap may be provided between the second side surface 20d and the second wall 16 that contact each other.

Here, regarding the first fitting portion 11 and the second fitting portion 21 that are fitted to each other, the first fitting portion 11 has a shape rotationally symmetrical about the first axis A1, and the second fitting portion The portion 21 has a rotationally symmetrical shape about a second axis A2 coinciding with the first axis A1. Therefore, when fitting the second fitting portion 21 with the first fitting portion 11, the second housing 20 can be displaced around the first axis A1 (second axis A2) with respect to the first housing 10. . Therefore, the installation position of the connector portion 23 can be changed with respect to the first housing 10 .

In particular, in the present embodiment, since the cross-sectional shape of the first fitting portion 11 and the second fitting portion 21 is circular, the second housing about the first axis A1 (the second axis A2) with respect to the first housing 10 does not move. A stagger angle of 20 is not limited. In this case, the second housing 20 may unexpectedly rotate about the axis with respect to the first housing 10 . In this regard, when the second fitting portion 21 is fitted with the first fitting portion 11, the first side surface 20c of the second housing 20 contacts the first wall 15 of the first housing 10, and the second housing 20 is in contact with the second wall 16 of the first housing 10 . As a result, it is possible to prevent the second housing 20 from unexpectedly rotating about the axis with respect to the first housing 10 . In other words, the contact between the first side surface 20 c and the first wall 15 functions as a rotation suppression mechanism that suppresses the rotation of the second housing 20 about the axis with respect to the first housing 10 . Similarly, the contact between the second side surface 20d and the second wall 16 functions as a rotation restraint mechanism.

8 to 10 are top views showing modifications of the adapter 1 of the first embodiment. 8 to 10 show possible installation positions of the connector portion 23 in the adapter 1 of the first embodiment.

In the example shown in FIG. 8, when the second fitting portion 21 is fitted with the first fitting portion 11, the fourth side surface 20f of the second housing 20 faces the same direction as the right side surface 10e of the first housing 10. . Therefore, the connector portion 23 is arranged on the right side surface 10 e side of the first housing 10 . Also, in this state, the second side surface 20 d of the second housing 20 is in contact with the first wall 15 of the first housing 10 . A first side surface 20 c of the second housing 20 contacts the second wall 16 of the first housing 10 .

In the example shown in FIG. 9, when the second fitting portion 21 is fitted with the first fitting portion 11, the fourth side surface 20f of the second housing 20 faces the same direction as the rear side surface 10d of the first housing 10. . Therefore, the connector portion 23 is arranged on the rear side surface 10 d side of the first housing 10 . Also, in this state, the third side surface 20 e of the second housing 20 is in contact with the first wall 15 of the first housing 10 . A fourth side surface 20 f of the second housing 20 is in contact with the second wall 16 of the first housing 10 .

In the example shown in FIG. 10, when the second fitting portion 21 is fitted with the first fitting portion 11, the fourth side surface 20f of the second housing 20 faces the same direction as the front side surface 10c of the first housing 10. . Therefore, the connector portion 23 is arranged on the front side surface 10 c side of the first housing 10 . Also, in this state, the fourth side surface 20 f of the second housing 20 is in contact with the first wall 15 of the first housing 10 . A third side surface 20 e of the second housing 20 is in contact with the second wall 16 of the first housing 10 .

A coaxial cable (not shown) is attached to the connector portion 23 of the adapter 1 at the site where the calibration is performed. A coaxial cable attached to the adapter 1 is pulled out so as to protrude from the fourth side surface 20f of the second housing 20 . The pull-out direction of the coaxial cable is determined according to the usage environment. Here, as described above, the first fitting portion 11 has a shape that is rotationally symmetrical about the first axis A1, and the second fitting portion 21 has a second axis A2 that coincides with the first axis A1. It has a shape that is rotationally symmetrical about the center. Therefore, when the second fitting portion 21 is fitted to the first fitting portion 11, the second fitting portion 21 is fitted to the first fitting portion 11 in accordance with the pull-out direction of the coaxial cable required according to the usage environment. The portion 21 can be displaced around the first axis A1 (second axis A2). In this case, the connector portion 23 can be arranged at an appropriate position. That is, the coaxial cable can be pulled out in an appropriate direction.

During calibration, a coaxial cable is attached to the connector portion 23 of the adapter 1 and the inner conductor (core wire) of the coaxial cable is connected to the connection pin 40 . The outer conductor (ground conductor) of this coaxial cable is connected to the outer conductor portion 23 a of the connector portion 23 . A coaxial cable connected to the adapter 1 is connected to a common measuring instrument (eg, network analyzer) with the probe device 101 .

A body 110 of the probe device 101 is fitted with the main fitting portion 13 of the adapter 1 . When the main fitting portion 13 is a recess, the main body 110 fits into the recess. In this case, the position of the main body 110 with respect to the adapter 1 is determined by the contact of the side surface of the main body 110 with the inner surface of the recess. This brings the measuring pin 120 of the probe device 101 into contact with the contact pin 30 of the adapter 1 . At this time, the projecting portion 111 of the main body 110 fits into the hole portion 14 formed in the main fitting portion 13 of the adapter 1 . This makes the position of the main body 110 of the probe device 101 relative to the adapter 1 more stable. In this state, the measuring device inputs and outputs signals to the probe device 101 (measurement pin 120). Accordingly, calibration of the probe device 101 is performed. When the main fitting portion 13 is a convex portion, the protrusion 111 of the main body 110 fits into the hole 14 formed in the main fitting portion 13 of the adapter 1, thereby adjusting the position of the main body 110 with respect to the adapter 1. is determined.

At this time, the distance from the contact pin 30 to the connector portion 23, that is, the length of the connection pin 40 remains unchanged. That is, in the adapter 1, the line length for transmitting signals is unchanged. Therefore, the calibration of the probe device 101 can be accurately performed regardless of the usage environment.

In this embodiment, only one of the first wall 15 and the second wall 16 may be provided on the bottom surface 10b of the first housing 10. FIG. This is because even if only the first wall 15 or only the second wall 16 is provided, it is possible to prevent a situation in which the second housing 20 unexpectedly rotates about the axis with respect to the first housing 10 .

Further, in the present embodiment, the second housing 20 may be joined to the first housing 10 while the second fitting portion 21 is fitted to the first fitting portion 11 . The joining method may be bonding with an adhesive, soldering or welding. Thereby, the second housing 20 is firmly integrated with the first housing 10 .

Also, in this embodiment, the first wall 15 and the second wall 16 may not be provided. This is because if the second housing 20 is joined to the first housing 10, it is possible to prevent the second housing 20 from suddenly rotating with respect to the first housing 10 about its axis. In this case, since the shift angle of the second housing 20 about the first axis A1 (the second axis A2) with respect to the first housing 10 is not limited, the pull-out direction of the coaxial cable can be freely set.

[Adapter 1 for calibration according to the second embodiment]
FIG. 11 is a bottom view of the first housing 10 in the adapter 1 of the second embodiment. The adapter 1 of the second embodiment is obtained by changing the rotation suppressing mechanism in the adapter 1 of the first embodiment.

In this embodiment, the second wall 16 is provided in the range from the left side 10f to the center between the right side 10e and the left side 10f. For example, the second side surface 20 d of the second housing 20 is in contact with the second wall 16 of the first housing 10 when the second fitting portion 21 is fitted with the first fitting portion 11 . The first wall 15 (see FIG. 6) in the first embodiment is not provided. However, a first wall 15 similar to the second wall 16 may be provided. When the first wall 15 is provided, the second wall 16 may not be provided. According to the adapter 1 of this embodiment, the same effects as those of the adapter 1 of the above-described first embodiment can be obtained.

[Adapter 1 for calibration according to the third embodiment]
FIG. 12 is a bottom view of the first housing 10 in the adapter 1 of the third embodiment. The adapter 1 of the third embodiment is obtained by changing the rotation suppressing mechanism in the adapter 1 of the first embodiment.

In this embodiment, a pair of protrusions 17 are provided on the bottom surface 10b of the first housing 10 instead of the second wall 16 (see FIG. 6) of the first embodiment. The pair of protrusions 17 are provided at positions corresponding to the installation positions of the second wall 16 . One protrusion 17 is provided near the right side surface 10e, and the other protrusion 17 is provided near the left side surface 10f. When the second fitting portion 21 is fitted with the first fitting portion 11 , for example, the second side surface 20 d of the second housing 20 is in contact with the pair of protrusions 17 of the first housing 10 . The first wall 15 (see FIG. 6) of the first embodiment is not provided. However, a pair of protrusions similar to the pair of protrusions 17 may be provided at a position corresponding to the installation position of the first wall 15 . According to the adapter 1 of this embodiment, the same effects as those of the adapter 1 of the above-described first embodiment can be obtained.

[Calibration adapter 1 of the fourth embodiment]
The calibration adapter 1 of the fourth embodiment will be described with reference to FIGS. 13 and 14. FIG. The adapter 1 of the fourth embodiment is obtained by changing the cross-sectional shape of the first fitting portion 11 and the second fitting portion 21 of the adapter 1 of the first embodiment.

FIG. 13 is a bottom view of the first housing 10 in the adapter 1 of the fourth embodiment. FIG. 14 is a top view of the second housing 20 in the adapter 1 of the fourth embodiment.

In the present embodiment, the cross-sectional shape of the first fitting portion 11 and the second fitting portion 21 that are fitted to each other is square. In the case of this embodiment, since the first fitting portion 11 is concave, the inner peripheral shape of the first fitting portion 11 is square. Since the second fitting portion 21 has a convex shape, the outer peripheral shape of the second fitting portion 21 is a square.

According to the adapter 1 of this embodiment, the same effects as those of the adapter 1 of the above-described first embodiment can be obtained.

However, in the adapter 1 of the present embodiment, simply by fitting the second fitting portion 21 with the first fitting portion 11, the second housing 20 is not unexpectedly rotated about the axis with respect to the first housing 10. can be prevented. For this reason, the adapter 1 of this embodiment does not have to be provided with the first wall 15 and the second wall 16 as in the first embodiment. However, in the case of the adapter 1 of the present embodiment, since the cross-sectional shape of the first fitting portion 11 and the second fitting portion 21 is square, the first housing 10 rotates around the first axis A1 (second axis A2). is limited to a pitch of 90°.

In the present embodiment, the cross-sectional shape of the first fitting portion 11 and the second fitting portion 21 that fit together is not limited to a square as long as it is a regular polygon. For example, the cross-sectional shape may be an equilateral triangle, a regular pentagon, a regular hexagon, or the like.

In addition, the present disclosure is not limited to the above embodiments, and various modifications are possible without departing from the scope of the present disclosure. For example, the cross-sectional shapes of the first fitting portion 11 and the second fitting portion 21 that fit together are not particularly limited as long as they are rotationally symmetrical shapes. For example, the cross-sectional shape may be rectangular.

Moreover, in the case of the above embodiment, the first fitting portion 11 has a concave shape, and the second fitting portion 21 has a convex shape. However, the first fitting portion 11 may be convex and the second fitting portion 21 may be concave. In this case, the concave second fitting portion 21 fits with the convex first fitting portion 11 .

1: adapter 10: first housing 10a: top surface 10b: bottom surface 10c, 10d, 10e, 10f: side surfaces 11: first fitting portion 12: through hole 13: main fitting portion 20: second housing 20a: top surface 20c, 20d, 20e, 20f: side surface 21: second fitting portion 23: connector portion 30: contact pin 40: connection pin A1: first axis A2: second axis

Claims (8)

An adapter attachable to a probe device having a measuring pin,
A first housing having a top surface and a bottom surface,
a main fitting portion formed on the upper surface of the first housing and capable of fitting with the probe device;
a first fitting portion formed on the bottom surface of the first housing;
a through hole penetrating from the main fitting portion to the first fitting portion;
A second housing having a top surface and side surfaces,
a second fitting portion formed on the upper surface of the second housing and fitted with the first fitting portion;
a contact pin inserted through the through hole of the first housing;
a contact pin coupled to the contact pin and extending from the side surface of the second housing;
a connector portion provided on the side surface of the second housing for connecting a coaxial cable to the connection pin;
an adapter. The adapter of claim 1, wherein
The adapter, wherein the first fitting portion is concave and the second fitting portion is convex. 3. The adapter according to claim 1 or 2,
The adapter, wherein the main fitting portion is a recess that can be fitted with the probe device in the first housing. The adapter according to any one of claims 1 to 3,
In the first housing, the first fitting portion has a rotationally symmetrical shape centering on a first axis that is positioned corresponding to the measuring pin among axes perpendicular to the top surface and the bottom surface of the first housing. and the through hole is along the first axis,
In the second housing, the second fitting portion has a shape rotationally symmetric about a second axis coinciding with the first axis, and the contact pin extends along the second axis. 5. The adapter of claim 4,
The adapter, wherein the cross-sectional shape of the first fitting portion and the second fitting portion that are fitted to each other is circular. An adapter according to claim 5, wherein
An adapter comprising a rotation suppression mechanism that suppresses rotation of the second fitting portion about the axis with respect to the first fitting portion. 7. The adapter of claim 6, wherein
The adapter according to claim 1, wherein the rotation restraint mechanism includes a wall provided on the bottom surface of the first housing and a side surface of the second housing that contacts the wall. 5. The adapter of claim 4,
The adapter, wherein the cross-sectional shape of the first fitting portion and the second fitting portion that are fitted to each other is a regular polygon.

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