JP2015010973A - Resistor-holding mechanism, mounting circuit board, and measurement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce manufacturing costs.SOLUTION: A resistor-holding mechanism according to the invention, having a main body part 21 formed in a shape of a plate and a terminal 22 disposed on the bottom part 21a side of the main body part 21, is configured so that the main body part 21 can hold a resistor 2 mounted on a circuit board 1 so as to be raised from the circuit board 1, the resistor-holding mechanism comprising: a plurality of pinching parts 31, formed of a material having electric conductivity, for pinching the main body part 21 therebetween; and a support part 32 for supporting the pinching parts 31. At least one of the pinching parts 31 is connected to one of a high potential and a low potential to which the terminal 22 of the resistor 2 is connected, and at least one of the other pinching parts 31, except the one pinching part 31, is connected to the another of the high potential and the low potential.

Description

  The present invention relates to a resistance holding mechanism that holds a resistance mounted on a substrate, a mounting board that includes the resistance holding mechanism, and a measurement apparatus that includes the mounting board.

  An input circuit incorporated in a voltage measuring device or the like that measures a high voltage is configured to include a resistor having a high resistance value for dividing the input high voltage. In this case, in this type of input circuit having a high resistance value, the frequency characteristics tend to deteriorate in the high frequency band. For this reason, for example, as disclosed in Japanese Patent Application Laid-Open No. 4-276561, a capacitor is connected in parallel with a resistor to prevent a decrease in frequency characteristics in a high frequency band.

  In this case, it is necessary to use a high-voltage capacitor that can withstand the high voltage for this type of input circuit that inputs a high voltage, but there are few types of high-voltage capacitors that are available in the market, and a desired capacitance. In addition to the difficulty of looking for capacitors, such capacitors are generally expensive. For this reason, this type of input circuit employs a configuration in which two metal plates processed into an arbitrary shape (size) are used as electrodes, and a capacitor in which air between the metal plates is a dielectric is incorporated. There is. When this configuration is adopted, the size and shape of the metal plate used as the electrode can be arbitrarily selected, so that the capacity of the capacitor can be easily defined to a desired capacity.

  On the other hand, as shown in FIG. 8, the high resistance resistor (resistor 300 shown in FIG. 8) is generally formed in a rectangular plate shape, and the main surface (surface having the largest area) is the substrate 400. The terminal (not shown) disposed at the base end portion is inserted into the substrate and fixed. In this case, in a configuration using a capacitor formed of a metal plate (metal plates 601 and 602 shown in the figure), the resistor disposed in the resistor 300 and the metal plate 601 due to a slight change in the posture of the resistor 300. , 602 change, and the frequency characteristics of the input circuit change. Therefore, the applicant has developed a resistance holding mechanism that fixes the capacitor metal plates 601 and 602 and the resistor 300 using a fixing member 500, as shown in FIG. . The fixing member 500 of the resistance holding mechanism is formed by injection molding of resin, is formed in a frame shape with four side walls, and has fitting portions 501 to 503 on the side walls. ing. In this case, the fixing member 500 holds the resistor 300 by fitting the side portion of the resistor 300 to the fitting portion 501 and fits the side portions of the metal plates 601 and 602 to the fitting portions 501 and 502, respectively. Thus, the metal plates 601 and 602 are configured to be held.

Japanese Patent Laid-Open No. 4-276561 (2nd page, FIG. 1)

  However, the resistance holding mechanism developed by the applicant has the following problems to be improved. That is, this resistance holding mechanism is configured to hold the resistance and the metal plate by fitting them to the fixing member. For this reason, the structure of a fixing member is complicated and the subject that the manufacturing cost of a fixing member, ie, the manufacturing cost of a resistance holding mechanism, rises exists. Also, when changing the size or shape of a metal plate to change the capacitance of a capacitor composed of a metal plate, or when changing the size (width) of a resistor to be used, match the size or shape. There is a problem that it is necessary to remake the fixing member and the manufacturing cost further increases.

  This invention is made | formed in view of this subject, and it aims at providing the resistance holding | maintenance mechanism, mounting board, and measuring apparatus which can reduce manufacturing cost.

  In order to achieve the above object, the resistance holding mechanism according to claim 1 has a main body portion formed in a plate shape and a terminal disposed on the bottom side of the main body portion, and the main body portion with respect to the substrate. A resistance holding mechanism for holding a resistance mounted on the board so as to stand upright, and a plurality of holding parts that are formed of a conductive material and hold the main body part, and a support that supports the holding part And at least one of the sandwiching portions is connected to one of a high potential and a low potential to which the terminal of the resistor is connected, and other than the one sandwiching portion. At least one of the sandwiching portions is connected to the other potential of the high potential and the low potential.

  The resistance holding mechanism according to a second aspect is the resistance holding mechanism according to the first aspect, wherein the holding portion is slidably supported with respect to the support portion.

  The resistance holding mechanism according to claim 3 is the resistance holding mechanism according to claim 1 or 2, wherein the clamping portion is configured to be capable of clamping at least one of the bottom side and the tip side of the main body. Yes.

  Further, the resistance holding mechanism according to claim 4 is the resistance holding mechanism according to any one of claims 1 to 3, wherein the sandwiching portion includes only a portion excluding a portion where the resistor is formed in the main body portion. Hold it.

  A mounting board according to claim 5 is a mounting board comprising the resistance holding mechanism according to any one of claims 1 to 4, the board, and the resistor mounted on the board, As for the resistance, a resistor is disposed only in a portion excluding a portion corresponding to a holding region held by the holding portion.

  According to a sixth aspect of the present invention, a measuring apparatus includes the mounting substrate according to the fifth aspect, and measures a measured amount.

  The resistance holding mechanism according to claim 1, the mounting substrate according to claim 5, and the measuring device according to claim 6, comprising a plurality of sandwiching portions that are formed of a conductive material and sandwich the main body portion of the resistor, One clamping portion is connected to one of a high potential and a low potential to which a resistor terminal is connected, and the other one clamping portion is connected to the other potential of the high potential and the low potential. For this reason, according to the resistance holding mechanism, the mounting substrate, and the measuring apparatus, each sandwiched portion is connected in parallel to the resistor together with the insulating material (insulating material constituting the main body portion of the resistor) existing therebetween. It can function as a capacitor, and each clamping part can be capacitively coupled with a resistor of resistance. That is, in the resistance holding mechanism, the mounting board, and the measuring apparatus, the holding portion for holding the resistance can function as an electrode of the capacitor for adjusting the frequency characteristics. Therefore, according to the resistance holding mechanism, the mounting substrate, and the measuring apparatus, it is possible to eliminate the need for a dedicated metal plate that functions as an electrode of a capacitor for adjusting frequency characteristics, and to fix such a dedicated metal plate. Since the fixing member can be omitted, the manufacturing cost can be sufficiently reduced. In addition, in the conventional configuration in which the metal plate that functions as the electrode of the capacitor is fitted and held in the fixing member, it is difficult to change the size and shape of the metal plate unless the fixing member is remade. In this resistance holding mechanism, mounting board, and measuring apparatus that do not require such a fixing member, since there are few restrictions when changing the size of the sandwiching portion, the size of the sandwiching portion can be arbitrarily changed to improve the frequency characteristics. Adjustment can be performed easily.

  Further, in this resistance holding mechanism, mounting board, and measuring device, the frequency characteristics can be easily adjusted by arbitrarily changing the size of the clamping portion, and thus it is necessary in the conventional configuration to adjust the frequency characteristics. This eliminates the need for the variable capacitor. For this reason, according to the resistance holding mechanism, the mounting substrate, and the measuring apparatus, the manufacturing cost can be further reduced by the amount that the variable capacitor is not required.

  In the resistance holding mechanism according to claim 2, the mounting substrate according to claim 5, and the measuring apparatus according to claim 6, the sandwiching portion is slidably supported with respect to the support portion. For this reason, according to the resistance holding mechanism, the mounting substrate, and the measuring apparatus, the distance between the clamping parts can be adjusted by sliding each clamping part, or the contact area where the clamping part contacts the main body of the resistor can be adjusted. By doing so, the frequency characteristics can be easily adjusted.

  Further, in the resistance holding mechanism according to claim 3, the mounting substrate according to claim 5, and the measuring apparatus according to claim 6, the clamping portion can clamp at least one of the bottom side and the tip side in the main body portion of the resistor. It is configured. For this reason, according to the resistance holding mechanism, the mounting board, and the measuring device, for example, even if the type of the resistor to be used is changed and the size (width) of the resistor is changed, the width of the resistor is increased. Unlike other conventional configurations, the fixing member that supports the side of the resistor needs to be remade every time the width of the resistor is changed. Therefore, the manufacturing cost can be reduced accordingly.

  Further, according to the resistance holding mechanism according to claim 4, the mounting substrate according to claim 5, and the measuring apparatus according to claim 6, the sandwiching portion excludes a portion where the resistor in the main body portion of the resistor is formed. By sandwiching only the portion, the stray capacitance between the sandwiching portion and the resistor can be reduced as compared with the configuration in which the portion where the resistor is formed is sandwiched. For this reason, according to the resistance holding mechanism, the mounting substrate, and the measuring apparatus, for example, it is possible to prevent a decrease in amplitude in a high frequency band when measuring a measured amount of a signal to be measured. Can be possible.

  Further, according to the mounting board according to claim 5 and the measuring apparatus according to claim 6, by using a resistor in which a resistor is disposed only in a portion excluding a portion corresponding to a holding region held by the holding portion. By securing a holding area of an appropriate size that can be securely held, it is possible to measure the measured amount in a wide band while reliably holding the resistance.

2 is a perspective view illustrating configurations of a voltage measuring device 10 and a mounting substrate 100. FIG. It is a perspective view of the mounting substrate 100 in a state in which the resistance holding mechanism 3 and the shield plate 4 are disassembled. It is a perspective view which shows the structure of the clamping parts 31a and 31b. FIG. 2 is a cross-sectional view taken along the X plane in FIG. FIG. 3 is a circuit diagram of a voltage measurement circuit including a resistor 2. 3 is an explanatory diagram illustrating a configuration of a resistor 2. FIG. 2 is a configuration diagram showing a configuration of a mounting substrate 200. FIG. It is a perspective view which shows the structure of the conventional resistance holding mechanism.

  Hereinafter, embodiments of a resistance holding mechanism, a mounting substrate, and a measuring apparatus will be described with reference to the accompanying drawings.

  First, the configuration of the voltage measuring device 10 shown in FIG. 1 will be described. The voltage measuring device 10 is an example of a measuring device, and includes a mounting substrate 100 so that a voltage (an example of a measured amount) can be measured. The mounting substrate 100 is an example of a mounting substrate, and includes a substrate 1, a resistor 2, a resistance holding mechanism 3, and a shield plate 4, as shown in FIGS. The mounting substrate 100 includes various components in addition to the above components. However, in order to facilitate understanding of the invention, illustration of other components other than these components is omitted in FIG. .

  As shown in FIGS. 1 and 2, the substrate 1 is configured to be able to mount a resistor 2 and various electronic components not shown. 1 and 2, only a part of the substrate 1 is shown. Moreover, the board | substrate 1 is comprised so that attachment of the resistance holding mechanism 3 and the shield board 4 is possible. Specifically, as shown in FIG. 4, an insertion hole 12 a through which the terminal 22 of the resistor 2 is inserted is formed in the substrate 1. As shown in FIGS. 2 and 4, the substrate 1 includes support plates 51 that constitute support portions 32 a and 32 b (hereinafter also referred to as “support portions 32” when not distinguished) that constitute the resistance holding mechanism 3. An insertion hole 12b is formed through which the fixing claw 61 provided at the base end of the insertion hole is inserted. Further, as shown in FIG. 4, the substrate 1 is provided at a base end portion of side walls 71 a to 71 d (hereinafter also referred to as “side wall 71” when not distinguished) constituting the shield plate 4. An insertion hole 12c through which the nail 81 is inserted is formed.

  In addition, as shown in FIG. 2, a plurality of conductor patterns 11 are formed on the substrate 1. In the figure, only a part of the conductor pattern 11 is shown. In this case, the conductor pattern 11 is connected to the terminal 22 of the resistor 2 and the base end portion of the side wall 71.

  The resistor 2 is, for example, a resistor having a high resistance value (as an example, about several MΩ) arranged in the voltage measuring circuit as shown in FIG. 5, and as shown in FIGS. And a plurality (two in this example) of terminals 22 disposed on the bottom 21 a of the main body 21. The main body 21 is formed in a plate shape in which main surfaces Sa (surfaces having the largest area) facing each other form a rectangle, and a resistor 23 is disposed therein. In addition, the resistor 2 has a main body 21 erected with respect to the substrate 1 in a state where each main surface Sa is at a right angle (or almost at a right angle) with respect to the surface of the substrate 1 and the length of the main surface Sa. It is mounted on the substrate 1 in a horizontally long posture (hereinafter, this posture is also referred to as a “mounting posture”) in which the side is parallel to the surface of the substrate 1, and the terminal 22 is connected (fixed) to the conductor pattern 11 of the substrate 1. ) In this case, as shown in FIG. 5, one terminal 22 is connected to the Hi-side input terminal for inputting the signal under measurement via the conductor pattern 11, and the other terminal 22 is calculated via the conductor pattern 11. Connected to the non-inverting input side of the amplifier.

  Further, as shown in FIG. 6, the resistor 2 is provided only in a portion excluding a region (hereinafter also referred to as “clamping region Sb”: see the same figure) sandwiched by a clamping unit 31 described later on each main surface Sa. Is arranged. That is, in this resistor 2, as shown in the figure, the resistor 23 is arranged so as to be unevenly distributed on the bottom 21a side, and the resistor 23 is arranged on the tip 21b side (the side opposite to the bottom 21a side). The part which is not provided is provided.

  The resistance holding mechanism 3 is a mechanism for holding the resistor 2 mounted on the substrate 1 in the mounting posture (maintaining the mounting posture). As shown in FIGS. 2 and 4, the holding portions 31 a and 31 b ( Hereinafter, when not distinguished, it is also referred to as “clamping portion 31”) and two support portions 32a and 32b.

  As shown in FIG. 3, the sandwiching portion 31 includes a base portion 41 formed in a rectangular plate shape and two sandwiching pieces 42 arranged so as to protrude from the base portion 41. Yes. Moreover, the clamping part 31 (base | substrate part 41 and the clamping piece 42) is formed with the material (for example, aluminum) which has electroconductivity. The base portion 41 is pressed (contacted) with the electrode 63 disposed in the groove 62 in a state in which the base portion 41 is fitted in a groove 62 of the rail 52 described later in the support portion 32. A pressing portion 41a for electrical connection is provided. The pressing portion 41a also functions as a movement restricting member that restricts the movement of the base portion 41 (the clamping portion 31) by the pressing force. In this case, as an example, the pressing portion 41a is configured by deforming a cantilevered belt-like portion formed by cutting a part of the base portion 41 into an arch shape. It is also possible to adopt a configuration in which the pressing part 41a is formed separately from the base part 41 and attached to the base part 41 by welding or the like.

  As shown in FIGS. 4 and 6, the sandwiching portion 31 is in contact with the sandwiching region Sb on the distal end portion 21 b side on each main surface Sa of the resistor 2, and the distal end portion 21 b side (bottom portion) of the main body portion 21. And an example of at least one of the side portion and the tip portion side). In this case, as described above, the main body 21 of the resistor 2 is formed with the resistor 23 only in the portion excluding the sandwiching region Sb. For this reason, the clamping part 31 clamps only the site | part except the site | part in which the resistor 23 in the main-body part 21 is formed.

  As shown in FIG. 2, the support portion 32 includes two support plates 51 and rails 52. The support plate 51 is formed in a plate shape with a non-conductive material (for example, resin). In this case, as shown in FIGS. 2 and 4, a fixing claw 61 is formed at the base end portion of the support plate 51, and the claw 61 is inserted through the insertion hole 12 b formed in the substrate 1. Thus, the support plate 51 is attached to the substrate 1. In place of the support plate 51, a plurality of columnar (for example, four) support members may be used.

  As shown in FIGS. 2 and 4, the rail 52 is formed in a plate shape with a non-conductive material (for example, resin), and is fixed to the tip portions of the two support plates 51. Further, as shown in FIG. 4, a groove 62 for fitting the base portion 41 of the clamping portion 31 is formed in the rail 52. A band-like electrode 63 is disposed in the groove 62. In this case, the electrode 63 disposed on the rail 52 in one of the two support portions 32a and 32b (for example, the support portion 32a) is either a high potential or a low potential to which the one terminal 22 in the resistor 2 is connected. One of the potentials (for example, a high potential) is connected via a wiring not shown. The electrode 63 disposed on the rail 52 in the other of the two support portions 32a and 32b (support portion 32b in this example) has a high potential and a low potential to which the other terminal 22 of the resistor 2 is connected. The other potential (in this example, a low potential) is connected via a wiring not shown.

  In the resistance holding mechanism 3, the base portion 41 of the sandwiching portion 31a is connected to the electrode 63 of the support portion 32a connected to a high potential, and the support portion 32b is connected to the base portion 41 of the sandwiching portion 31b. The electrode 63 is connected. For this reason, in this resistance holding mechanism 3, as shown in FIG. 5, the sandwiching portions 31a and 31b are connected to the resistor 2 together with the insulating material existing between them (the insulating material constituting the main body portion 21 of the resistor 2). Functions as a capacitor connected in parallel. Further, as shown in FIG. 6, each sandwiching portion 31 a, 31 b is capacitively coupled to the resistor 23 of the resistor 2. Further, in this resistance holding mechanism 3, since the base portion 41 of the clamping portion 31 is fitted in the groove 62 formed in the rail 52 of the support portion 32, the clamping portion 31 slides with respect to the support portion 32. Is possible.

  As shown in FIG. 2, the shield plate 4 includes side walls 71 a to 71 d and a top plate 72 each formed of a conductive material (for example, aluminum). In this case, the side walls 71 are integrally formed. Further, as shown in FIGS. 2 and 4, each side wall 71 is configured to be erected (attached) to the substrate 1 so as to surround the mounted resistance 2 and the attached resistance holding mechanism 3. In this case, a fixing claw 81 is formed at the base end portion of each side wall 71, and each side wall 71 is attached to the substrate 1 by inserting the claw 81 through the insertion hole 12 c formed in the substrate 1. It is done. Each side wall 71 has a base end connected to a reference potential conductor pattern 11 formed on the substrate 1 and is connected to the reference potential via the conductor pattern 11. Further, as shown in FIG. 2, the distal ends of the side walls 71b and 71d are provided with a bent portion formed by bending a part of the distal end portion inward, and a screw hole is formed in the bent portion. .

  The top plate 72 is formed in a rectangular shape as shown in FIG. 2 and is disposed on the tip end side of each side wall 71 as shown in FIG. 4 and is screwed to each side wall 71 (the side walls 71b and 71d). It is fixed to the bent portion provided at the front end portion and is electrically connected to each side wall 71.

  Next, a method for manufacturing the mounting substrate 100 will be described with reference to the drawings, focusing on a method for mounting the resistor 2 on the substrate 1 and a method for attaching the resistance holding mechanism 3 and the shield plate 4 to the substrate 1.

  First, the resistor 2 is mounted on the substrate 1. Specifically, the two terminals 22 arranged on the bottom 21a of the main body 21 in the resistor 2 are inserted into the insertion holes 12a formed in the substrate 1, and then each terminal 22 is soldered to the substrate. Connected (fixed) to one conductor pattern 11. In this case, one terminal 22 is connected to the conductor pattern 11 connected to the measured signal input terminal on the Hi side (see FIG. 5), and the other conductor pattern 11 connected to the non-inverting input side of the operational amplifier is connected to the other. Terminal 22 is connected.

  Subsequently, the resistance holding mechanism 3 is attached to the substrate 1. Specifically, first, as shown in FIG. 2, the base portion 41 of the sandwiching portion 31 is fitted into the groove 62 formed in the rail 52 of the support portion 32, and the sandwiching portion 31 is attached to the support portion 32. At this time, as shown in FIG. 4, the pressing portion 41a provided in the base portion 41 presses the electrode 63 disposed in the groove 62, and the electrode 63 and the pressing portion 41a (the clamping portion 31) are pressed. Are electrically connected. Further, the movement of the base portion 41 (the clamping portion 31) is restricted by the pressing force of the pressing portion 41a.

  Subsequently, as shown in FIG. 4, the claw 61 formed at the base end portion of each support plate 51 of the support portion 32 is inserted through the insertion hole 12 b formed in the substrate 1. At this time, as shown in the figure, the two clamping pieces 42 constituting the clamping part 31 attached to the support part 32 are connected to the leading end part 21b side of each main surface Sa of the resistor 2 (main body part 21) ( The main body 21 is clamped by pressing the clamping area Sb in contact with the clamping area Sb). Further, the support portion 32 is fixed to the substrate 1 by inserting the claw 61 into the insertion hole 12b.

  Next, the electrode 63 disposed on the rail 52 of the support portion 32a and the conductor pattern 11 connected to one terminal 22 of the resistor 2 are connected via a wiring not shown. In addition, the electrode 63 disposed on the rail 52 of the support portion 32b and the conductor pattern 11 connected to the other terminal 22 of the resistor 2 are connected via a wiring not shown. As a result, the resistance holding mechanism 3 is attached to the substrate 1.

  Subsequently, the shield plate 4 is attached to the substrate 1. Specifically, first, the side walls 71 a to 71 d are attached to the substrate 1 so as to surround the resistance holding mechanism 3. In this case, the claw 81 formed at the base end portion of each side wall 71 is inserted into the insertion hole 12 c formed in the substrate 1, and then the distal end portion of the claw 81 is bent on the back surface side of the substrate 1. Thereby, each side wall 71 is fixed to the substrate 1. Further, the base end portion of each side wall 71 is connected to the conductor pattern 11 formed on the substrate 1.

  Subsequently, the top plate 72 is placed on the tip of each side wall 71. Then, as shown in FIG. 4, it fixes to the front-end | tip part (the bending part provided in the front-end | tip part of the side walls 71b and 71d) of each side wall 71 by screwing. Thus, the attachment of the shield plate 4 is completed.

  In this case, as described above, since the clamping part 31 holds the resistor 2, the movement of the resistor 2 is prevented, and the resistor 2 is mounted (an attitude in which the main body part 21 stands on the substrate 1 (this example Then, each main surface Sa is maintained at a right angle (or a substantially right angle) with respect to the surface of the substrate 1)). Further, in the mounting substrate 100, as shown in FIG. 6, the resistor 23 is disposed only in a portion excluding a portion corresponding to the sandwiching region Sb sandwiched by the sandwiching portion 31 in each main surface Sa of the resistor 2. Therefore, the sandwiching portion 31 (the sandwiching piece 42) that sandwiches the resistor 2 and the resistor 23 are sufficiently separated from each other. For this reason, in this mounting substrate 100, the situation in which the resistor 2 causes dielectric breakdown due to the signal under measurement is reliably prevented.

  On the other hand, in this resistance holding mechanism 3, the clamping part 31a is connected to a high potential to which one terminal 22 of the resistor 2 is connected via the electrode 63 of the support part 32a, and the clamping part 31b connects the electrode 63 of the support part 32b. And is connected to a low potential to which the other terminal 22 of the resistor 2 is connected. For this reason, in this resistance holding mechanism 3, as shown in FIG. 5, the sandwiching portions 31a and 31b are connected to the resistor 2 together with the insulating material existing between them (the insulating material constituting the main body portion 21 of the resistor 2). Functions as a capacitor connected in parallel. Further, as shown in FIG. 6, each sandwiching portion 31 a, 31 b is capacitively coupled to the resistor 23 of the resistor 2.

  In this case, in the resistance holding mechanism 3, the clamping portion 31 is supported by the support portion 32 so as to be slidable with respect to the support portion 32. For this reason, in the resistance holding mechanism 3, the holding portions 31 a and 31 b are slid to adjust the distance between the holding portions 31 a and 31 b, or the holding piece 42 of the holding portion 31 is the main surface Sa of the main body 21 in the resistor 2. It is possible to easily adjust the frequency characteristic by adjusting the area in contact with.

  As described above, in the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, a plurality of (two in the above example) sandwiching the main body 21 of the resistor 2 formed of a conductive material is sandwiched. Part 31 is provided, and one clamping part 31 is connected to one of a high potential and a low potential to which the terminal 22 of the resistor 2 is connected, and the other one clamping part 31 is the other of the high potential and the low potential. Is connected to the potential. For this reason, according to this resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, each clamping part 31 is combined with an insulating material (insulating material constituting the main body part 21 of the resistor 2) existing between them. It can function as a capacitor connected in parallel to the resistor 2, and each clamping portion 31 can be capacitively coupled to the resistor 23 of the resistor 2. That is, in the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, the holding portion 31 for holding the resistor 2 can function as an electrode of a capacitor for adjusting frequency characteristics. Therefore, according to the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, it is possible to eliminate the need for a dedicated metal plate that functions as an electrode of a capacitor for adjusting frequency characteristics, and to use such a dedicated metal. Since the fixing member for fixing the plate can be eliminated, the manufacturing cost can be sufficiently reduced. In addition, in the conventional configuration in which the metal plate that functions as the electrode of the capacitor is fitted and held in the fixing member, it is difficult to change the size and shape of the metal plate unless the fixing member is remade. In the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10 that do not require such a fixing member, since there are few restrictions when changing the size of the clamping part 31 (the clamping piece 42), The frequency characteristic can be easily adjusted by arbitrarily changing the size.

  Furthermore, in the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, the frequency characteristic can be easily adjusted by arbitrarily changing the size of the clamping part 31. The variable capacitor required in the conventional configuration can be eliminated. For this reason, according to the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, the manufacturing cost can be further reduced because the variable capacitor is unnecessary.

  Further, in the resistance holding mechanism 3 and the mounting substrate 100, the sandwiching portion 31 is supported so as to be slidable with respect to the support portion 32. Therefore, according to the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, the distance between the clamping parts 31 is adjusted by sliding each clamping part 31, or the clamping part 31 (the clamping piece 42) is a resistance. The frequency characteristics can be easily adjusted by adjusting the contact area in contact with the two main body portions 21.

  Further, in the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, the holding part 31 is configured to be able to hold the tip part 21 b in the main body part 21 of the resistor 2. For this reason, for example, even if the type of resistor used is changed and the size (width) of the resistor is changed, the resistor 2 can be reliably held regardless of the width of the resistor. Therefore, unlike the conventional configuration in which the fixing member that supports the side portion of the resistor 2 needs to be remade each time the width of the resistor is changed, the cost required for remaking the fixing member can be reduced. The manufacturing cost can be reduced accordingly.

  In addition, according to the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, the clamping unit 31 clamps only the part excluding the part where the resistor 23 is formed in the main body part 21. The stray capacitance between the sandwiching portion 31 and the resistor 23 can be reduced as compared with the configuration in which the portion where the 23 is formed is sandwiched. For this reason, according to the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, it is possible to prevent a decrease in amplitude in the high frequency band when measuring the measured amount of the measurement target signal. Measurement can be possible.

  Further, according to the resistance holding mechanism 3, the mounting substrate 100, and the voltage measuring device 10, the resistor 23 is disposed only in a portion other than the portion corresponding to the sandwiching region Sb sandwiched by the sandwiching portion 31 in each main surface Sa. By using the resistor 2, it is possible to ensure a holding area Sb of an appropriate size that can be securely held, and to measure the measured amount in a wide band while reliably holding the resistor 2. .

  Note that the configurations of the resistance holding mechanism, the mounting substrate, and the measuring apparatus are not limited to the above configurations. For example, the configuration example in which the distal end portion 21b side of the main body portion 21 in the resistor 2 is clamped by the clamping portion 31 has been described above, but a configuration in which the bottom portion 21a side of the main body portion 21 is clamped by the clamping portion 31 can also be adopted. Specifically, the resistance holding mechanism 203 and the mounting substrate 200 shown in FIG. 7 can be employed. In the following description, the same components as those of the resistance holding mechanism 3 and the mounting substrate 100 described above are denoted by the same reference numerals, and redundant description is omitted. In the resistance holding mechanism 203 and the mounting substrate 200, support portions 232 a and 232 b (hereinafter, also referred to as “support portions 232” when not distinguished) are configured by the rails 52 directly disposed on the substrate 1. When the base portion 41 of the sandwiching portion 31 is fitted into 62, the sandwiching portion 31 is supported so as to be slidable with respect to the support portion 232. Moreover, in this mounting substrate 200, as shown in the figure, the bottom portion 221a side of the main body portion 221 in the resistor 202 is sandwiched by the sandwiching portion 31.

  When this mounting substrate 200 is adopted, as shown in FIG. 7, each region sandwiched by the sandwiching portions 31 on each main surface Sa of the main body portion 221 (hereinafter also referred to as “sandwich region Sb”: see FIG. 7) It is preferable to use the resistor 202 in which the resistor 223 is disposed only in a portion other than the portion corresponding to (that is, the resistor 223 is disposed so as to be unevenly distributed on the tip portion 221b side). By using the resistor 202, the holding portion 31 holding the resistor 202 and the resistor 223 are sufficiently separated from each other, so that a situation in which the resistor 202 causes dielectric breakdown due to a signal to be measured can be reliably prevented. .

  Further, it is also possible to adopt a configuration in which both the front end portions 21 b and 221 b side and the bottom portions 21 a and 221 a side of the main body portions 21 and 221 in the resistors 2 and 202 are clamped by the clamping portion 31.

  Moreover, although the example provided with the two clamping parts 31 was mentioned above, the structure provided with the three or more clamping parts 31 is also employable. In this case, in the configuration including three or more sandwiching portions 31, at least one of the three sandwiching portions 31 is set to one of a high potential and a low potential to which the terminals 22 of the resistors 2 and 202 are connected. By connecting and connecting at least one of the other sandwiching portions 31 to the other potential of the high potential and the low potential, the above-described effects can be realized.

  Further, the example in which the sandwiching portion 31 is slidable with respect to the support portions 32 and 232 has been described above, but a configuration in which the sandwiching portion 31 does not slide (fixed) with respect to the support portions 32 and 232 may be employed. it can.

  Further, the example applied to the voltage measuring device 10 as an example of a measuring device that measures a voltage as a measured amount has been described above. However, physical quantities such as current, power, resistance, rotation speed, and temperature, atomic weight, molecular weight, and the like The present invention can be applied to various measuring devices that measure a chemical amount as a measurement amount, and even in this case, the above-described effects can be realized.

DESCRIPTION OF SYMBOLS 1 Board | substrate 2,202 Resistance 3,203 Resistance holding | maintenance mechanism 10 Voltage measuring device 21,221 Main body part 21a, 221a Bottom part 21b, 221b Tip part 22 Terminal 23,223 Resistor 31a, 31b Holding part 32a, 32b, 232a, 232b Support Part 52 rail 100,200 mounting substrate Sb clamping region

Claims (6)

A resistor having a body portion formed in a plate shape and a terminal disposed on the bottom side of the body portion, and holding the resistance mounted on the substrate so that the body portion is erected with respect to the substrate A holding mechanism,
A plurality of sandwiching portions that are formed of a conductive material and sandwich the main body portion; and a support portion that supports the sandwiching portion,
At least one of the sandwiching portions is connected to one of a high potential and a low potential to which the terminal of the resistor is connected, and the other sandwiching portion excluding the one sandwiching portion At least one of the resistance holding mechanisms connected to the other of the high potential and the low potential.   The resistance holding mechanism according to claim 1, wherein the holding portion is slidably supported with respect to the support portion.   The resistance holding mechanism according to claim 1, wherein the clamping unit is configured to be able to clamp at least one of the bottom side and the tip side of the main body.   The resistance holding mechanism according to any one of claims 1 to 3, wherein the clamping part clamps only a part of the main body part excluding a part where the resistor is formed. A mounting board comprising the resistance holding mechanism according to claim 1, the board, and the resistor mounted on the board,
The mounting substrate in which the resistor is disposed only in a portion excluding a portion corresponding to a holding region held by the holding portion.   A measuring apparatus comprising the mounting substrate according to claim 5 for measuring a measured amount.

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