JP3340294B2 - Connectors for electronic components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for an electric component used for measuring characteristics of an electronic component such as an element for an ultrahigh frequency.

[0002]

2. Description of the Related Art In recent years, the demand for electronic components, particularly ultrahigh frequency devices (semiconductor devices, etc.) in the 3 to 10 GHz band has been rapidly increasing. It has increased. In measuring the characteristics of such an ultra-high frequency electronic component, the longer the length of the contact, the greater the influence of inductance and stray capacitance. Therefore, it is preferable to use a contact as short as possible. Also, if a cable is also connected between the contact and the measuring instrument body, a measurement error will occur due to the influence of the inductance and stray capacitance of the cable, so the contact is generally provided directly on the measuring circuit board of the measuring instrument body. is there.

FIG. 8 is a view showing a conventional example of an electronic component connector used for measuring characteristics of an ultra-high frequency electronic component. The electronic component connector 1 includes a plurality of contacts 3 formed of strip-shaped metal pieces arranged in parallel on a measurement circuit board 2, and the lead terminals 5 of the electronic component 4 are applied to the contacts 3 by a pressing member 6. The electric characteristics of the electronic component 4 are measured by applying a current or a voltage to the electronic component 4 via the terminal 7 of the measurement circuit board 2 by pressing the electronic component 4 with a predetermined pressure. At the time of measurement, if an oxide film is formed on the surface of the contact 3 and the lead terminal 5 or the surface is dirty, these form an insulating layer and a good electrical connection cannot be obtained. The contact 3 is connected to the lead terminal 5 by an operation called a wiping action utilizing the spring property of the contact 3.
Slidable contact with the surface of the substrate to obtain good conduction. The contact 3 is fixed on the terminal 7 by soldering.

[0004]

As described above, in the characteristic test in the ultra-high frequency band, the contact 3 is formed into small pieces in order to reduce the inductance and the stray capacitance and to increase the measurement accuracy. Although provided directly on the measurement circuit board 2, for example, when formed to a length of 1 mm or less, the rigidity of the contact 3 must be increased in order to increase the contact pressure with the lead terminal 5. In this case, a certain amount of elastic deformation is required due to the height accuracy of the tip of the contact 3 and the height accuracy of the lead terminal 5 itself. was there. In particular, in order to increase the rigidity of the spring material, it is necessary to increase the plate thickness. However, when the thickness is increased, metal fatigue is remarkably exhibited, and the durability is reduced. Further, when the rigidity is increased, a sufficient amount of elastic deformation cannot be obtained. Furthermore, in order to perform a wiping action using spring properties to obtain good conduction, the contact 3 needs to be elastically deformed to some extent even after the lead terminal 5 starts contacting. Therefore, as the size of the contact 3 is reduced, the above-described problem occurs, and it becomes difficult to perform highly accurate measurement.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to eliminate the need for the contact to have a spring property and to reduce the size of the contact. Another object of the present invention is to provide a connector for an electronic component suitable for use in measuring the characteristics of an electronic component having ultra-high frequency characteristics, which can improve durability and obtain a good wiping action.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plate-like contact mounting member in which a slot is formed between a plurality of partition plates, a partition plate of the contact mounting member and a slot. A pair of radially expandable and contractible pipes arranged in parallel so as to penetrate through them, and a contact held in each of the slots, and a holding portion holding the contact by the pipe. The two ends are integrally formed by contact portions extending in different directions from each other, and the contact is rotated by flowing a fluid through the pipe, and the contact portion of the contact is brought into contact with the contact by the rotating force. The electronic device is characterized in that it is brought into contact with terminals of an electronic component facing both sides of the plate surface of the daughter mounting member. Further, the present invention is characterized in that a recess is formed in a holding portion sandwiched between the pipes of the contact, and the contact is held by the recess when fluid is not supplied to the pipe member. Further, in the present invention, each partition plate and each slot are formed by processing one plate material.

In the present invention, the contact is held by a pipe, and when the pipe is expanded in the radial direction by the supply of fluid, the contact turns and the contact is provided at both ends of the contact. Are connected so as to press the terminals of the electronic components arranged opposite to each other. At this time, the contact slides on the surface of the terminal and performs a wiping action.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a partially broken perspective view showing an embodiment of an electronic component connector according to the present invention, FIG. 2 is a diagram showing a state of a contact when no air pressure P is supplied, and FIG. FIG. 4 is a diagram showing a state of the contact when the contact mounting member is fixed to the measurement circuit board, and FIG. 5 is a diagram showing a state of the contact at the time of measurement. Note that the same components as those described in the section of the related art are denoted by the same reference numerals, and description thereof will be omitted. In these drawings, the electronic component connector 20 includes a pair of right and left contact mounting members 21 which are interposed between the measurement circuit board 2 and the electronic component 4 so as to face each other.
And a plurality of contacts 22 attached to these contact mounting members 21 for electrically connecting the terminals 7 of the measurement circuit board 2 and the lead terminals 5 of the electronic component 4 at the time of measurement. And a radially expandable and contractible pipe 23 for rotatably holding.

The contact mounting member 21 is formed in a plate shape having an appropriate plate thickness by an insulating material such as a synthetic resin and is fixed on the measurement circuit board 2, but is not limited thereto. The structure may be such that the contact mounting member 21 is movable in parallel in the vertical direction. A partition plate 27 forming a plurality of slots 26 is provided at an end of the contact mounting member 21 on the electronic component side at predetermined intervals in the longitudinal direction of the pipe 23. For this reason, the electronic component side end of the contactor mounting member 21 is formed in a comb-like shape, and each partition plate 27 has two insertion holes 25 through which the pipe 23 is inserted.
6 are formed apart from each other in the depth direction. For this reason,
The insertion hole 25 and the slot 26 communicate with each other. Slot 2
The intervals of 6 are the same as the pitch of the lead terminals 5, and the width of the slot is formed to be slightly larger than the plate thickness of the contact 22.

The contact 22 is formed in a small S shape from a metal plate such as phosphor bronze, platinum, etc.
The holding portion 22A is held by the book pipe 23, and the contact portions 22B and 22C extend in different directions at both ends of the holding portion 22A, and engage with each pipe 23 on both side surfaces of the holding portion 22A. Recesses 28 are provided, respectively. A surface 28 </ b> A of the depression 28 that contacts the pipe 23 (hereinafter, referred to as a contact surface) is formed in an arc shape along the outer periphery of the pipe 23. The length of the entire contact surface 28A is arbitrary, but as shown in FIG. 2, the arc lengths L1, L2 (L2, L2) above and below the point A where the horizontal line 29 passing through the center O of the pipe 23 intersects the contact surface 28A. L1 <L2) is different, so that when the pipe 23 is expanded in the radial direction, that is, when the pipe 23 is expanded, a clockwise rotational force is generated in the contact 22. FIG. 3 shows the state. Contact 2
2 is in contact with the pipe 23 in an arc shape in the slot 26 (FIG. 2), but when the air pressure p is supplied, the outer peripheral surface 23A of the pipe 23 is pressed against the insertion hole 25 by expanding in the radial direction. Further, in the slot 26, there is no restriction as to the extension of the pipe 23 like the insertion hole 25, and the outer peripheral surface of the pipe 23 extends like 23B, and the arc lengths L1, L2 (L1 <L2) are different. As a result, a rotational force is generated in a clockwise direction about the approximate center of the contact 22 as indicated by an arrow d, and the contact 22 rotates. In addition. An arc portion between the lower and upper portions of the contact surface 28A is provided to prevent the contact 22 from dropping off. Further, in FIG. 2, the upper arc portion of the left contact surface 28A is longer than the lower arc portion.

[0011] Such a contact 22 is connected to the contact holding member 2.
In order to attach the contact 22 to the slot 2,
6 is inserted using the elastic deformation of the pipe itself so as to be located between the two pipes 23, and the recess 28 is inserted into the pipe 23.
May be engaged. Thereby, the pipe 23 holds the contact 22 in a freely rotatable manner.

The pipe 23 is formed of a radially expandable material such as rubber or silicone, and has one end connected to an air supply source (not shown) and the other end closed. The pipe 23 has a diameter of about φ1 mm, and an air pressure P of about 5 kg · f / cm ² is supplied from the air supply source during measurement. The insertion hole 25 into which the pipe 23 is inserted need only be a perfect circle, and the dimensional accuracy of the hole diameter is not so important. The two pipes 23 are arranged in parallel with each other.

In the electronic component connector 20 having such a structure, the contact mounting member 2 is mounted on the measuring circuit board 2.
When the air pressure P is supplied after the air pressure P is supplied or when the air pressure P is supplied after the mounting, the state shown in FIG. 4 is obtained. As shown in FIG. 5, the measurement circuit board 2 and the leads 5 of the electronic components 4 described later are pressed from above. As a result, the contact mounting member 21 is pressed and sandwiched between the lead 5 and the measurement circuit board 2, so that the contact mounting member 21 may be configured to be movable in a direction perpendicular to the measurement circuit board 2.

The electronic components 4 to be measured at the time of measurement are transported and stopped at a predetermined interval above the pair of contact holding members 21, and each lead terminal 5 is made to correspond to the contact 22. Next, a predetermined air pressure P is supplied to each pipe 23 from an air supply source. Alternatively, the air pressure P may be supplied to each pipe 23 in advance. This air pressure P acts uniformly on the entire inner peripheral surface of the pipe 23, and expands the pipe 23 in the radial direction against the elasticity of the material. Contact 2 of this pipe 23
The pressure applied to the portion in contact with the second contact surface 28A is smaller than the pressure applied to the L2 portion due to the difference in the arc lengths L1 and L2 (L1 <L2). Rotational force is being generated. In this state, when each lead terminal 5 is pressed against the contact 22 from above, the contact 22 against the rotational force in the clockwise direction is rotated counterclockwise by an arrow E, and the contact portion between the lead terminal 5 and the contact 22 is turned. 22B and the terminals 7 and the contacts 2 of the measurement circuit board 2
The second contact portions 22C perform wiping actions as indicated by arrows F and G, respectively, whereby the lead terminals 5 and the terminals 7 are electrically connected well via the contacts 22, and measurement characteristics of the electronic component 4 are performed. . If the contacts 22 are formed symmetrically with respect to points, the contact pressure of the contact portions 22B and 22C with respect to the lead terminal 5 and the terminal 7 can be made equal.

As described above, when the contact 22 is rotated by the radial extension of the pipe 23 and pressed against the lead terminal 5 and the terminal 7, the contact 22 itself does not need to have elasticity. The degree of freedom of selection is increased, the durability is improved, and the contact 22 can be formed shorter. In addition, the contact pressure can be freely adjusted by adjusting the air pressure P. When the contact pressure is adjusted according to the surface condition of the lead terminal 5, wear of the contact 22 is reduced, and the durability can be further improved. Further, since the contact 22 slides on the surface of the lead terminal 5 and the terminal 7 by rotation, a wiping action is performed. Therefore, an oxide film, dirt, etc. on the contact portion surface between the contact 22 and the lead terminal 5 and the terminal 7 are formed. Get rid of. Therefore, good electrical connection with low contact resistance can be obtained. Further, since the slot 26 and the partition plate 27 are formed by processing a single plate material, the number of parts is small, the production is easy, and the production cost can be reduced.

FIG. 6 is a diagram showing another embodiment of the present invention. In this embodiment, an opening 30 is provided in the insertion hole 25 through which the pipe 23 is inserted. As shown in FIG. 2, the open portion 30 is formed between the outer peripheral surface of the pipe 23 and the contact surface 28A for applying a pressing force to the contact 22. In such a structure, when the pipe 23 is expanded in the radial direction by the supply of the air pressure P, the influence of the partition plate 27 is smaller between the contact surfaces and the contact surface than between the contact surfaces and the contact surface. Large turning power and contact pressure can be applied.

FIG. 7 is a diagram showing still another embodiment of the present invention. In this embodiment, a spacer 24 is attached to the contact attaching member 21 to fix the measuring circuit board 2, and before the air pressure P is supplied, the contact 22 is attached to the terminal 7 of the measuring circuit board 2 and the lead terminal 5 of the electronic component. Is not connected,
In this embodiment, the contact 22 is connected to the terminals 5 and 7 by the rotation of the contact 22 after the supply of the air pressure P. In this state, there is no need for a mechanism for pressing the lead terminals 5 of the electronic component against the contacts 22, and there is an advantage that the structure is simplified.

In the above-described embodiment, an example has been described in which air is supplied to the pipe 23 as a fluid. However, the present invention is not limited to this, and water may be supplied. Further, in the above-described embodiment, the measurement circuit board 2 is used as a kind of the electronic component, but is not limited to the board. Further, the outer diameter of the pipe 23 is not limited to a diameter substantially equal to the hole diameter of the insertion hole 25, and may be a little smaller or even smaller.
The pipe portion facing 6 expands to apply a predetermined rotational force to the contact 22. Furthermore, in the above-described embodiment, each slot 26 and each partition plate 27 are formed by processing a single plate material. However, the present invention is not limited to this, and a plurality of thin plate materials and spacers are alternately stacked to form the slot 26. And the partition plate 27 may be formed.

[0019]

As described above, the electronic component connector according to the present invention has a plate-like contact mounting member having a slot formed between a plurality of partition plates, and each of the partition plates of the contact mounting member. It comprises two radially extendable pipes arranged in parallel so as to penetrate the slot, and a contact held in each of the slots, and a holding portion holding the contact by the pipe And two ends thereof are integrally formed by contact portions extending in different directions from each other, and the contact is rotated by flowing a fluid into the pipe, and the contact portion of the contact is rotated by the rotating power. The contacts of the electronic components opposing each other on both sides of the plate surface of the contact mounting member are brought into contact with each other, eliminating the need for the contacts to have elasticity, increasing the degree of freedom in selecting the contact material and improving the durability. Let me Probe can be a short form.
Therefore, it is possible to obtain a contact having low impedance and low stray capacitance, and it is suitable for use in measuring the characteristics of an electronic component having a small measurement error and high frequency characteristics. In addition, the contact pressure of the contact can be freely adjusted by the fluid pressure, and the contact is slid on the surface of the terminal by rotation to perform a wiping action, so that the contact resistance with the terminal is small. Good electrical connection is obtained.

Further, in the present invention, since the slot and the partition plate are formed by processing a single plate material, the number of parts is small.
It is easy to manufacture and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing an embodiment of an electronic component connector according to the present invention during measurement.

FIG. 2 is a diagram showing a state of a contact when no air pressure P is supplied.

FIG. 3 is a diagram showing a state of a contact at the time of supplying air pressure P.

FIG. 4 is a diagram showing a state of a contact when a contact mounting member is fixed to a measurement circuit board.

FIG. 5 is a diagram showing a state of a contact at the time of measurement.

FIG. 6 is a diagram showing another embodiment of the present invention.

FIG. 7 is a diagram showing another embodiment of the present invention.

FIG. 8 is a view showing a conventional example of an electronic component connector.

[Explanation of symbols]

2: measuring circuit board, 3: contact, 4: electronic component, 5: lead terminal, 6: pressing member, 7: terminal, 20: connector for electronic component, 21: contact holding member, 22: contact, 23
... pipe, 25 ... insertion hole, 26 ... slot, 27 ... partition plate, 28 ... hollow, 28A ... contact surface, 30 ... open part.

Claims (4)

(57) [Claims] 1. A plate-like contact mounting member in which a slot is formed between a plurality of partition plates, and two contact plates arranged in parallel so as to penetrate through each partition plate and the slot of the contact mounting member. A radially expandable and contractible pipe, and a contact held in each of the slots, the contact being held by the pipe and contacting portions extending in opposite directions to both ends of the holding portion; Are formed integrally, and the contact is rotated by flowing a fluid into the pipe, and the rotating force causes the contact portion of the contact to be opposed to both sides of the plate surface of the contact mounting member. An electronic component connector characterized by being brought into contact with terminals. 2. The electronic component connector according to claim 1, wherein the contact is substantially S-shaped. 3. The electronic component connector according to claim 1, wherein a recess is formed in the holding portion sandwiched between the pipes of the contact, and when the fluid is not supplied to the pipe member, the recess causes the contact. A connector for electronic components, wherein a connector is held. 4. The electronic component connector according to claim 1, wherein each partition plate and each slot are formed by processing a single plate material.