JP2014010124A - Measurement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measurement device for allowing a measurer to easily confirm a measurement result without looking at the display part of a device main body in various use environments.SOLUTION: A measurement device includes: a device main body 100; a test lead 200; a display device 300; and an attachment device 400 having a fixing part 401 fixed to a holder 202 of the test lead 200 so as to be attachable/detachable and a support part 402 attached to the fixing part 401 to support the display device 300 such that the direction of the display device 300 is changeable at a position isolated from the holder 202. The device main body 100 transmits information related to a measurement result searched by a measurement part 104 on the basis of a signal input via the test lead 200 via a first radio communication part 105, and the display device 300 receives the information transmitted from the first radio communication part 105 via a second radio communication part 305, and displays the measurement result at a display part 302.

Description

  The present invention relates to a measuring apparatus such as an LCR meter, an ohmmeter, or a digital multimeter that performs measurement purposes (voltage, current, resistance, capacitance, etc.) using a test lead.

  Conventionally, measuring devices such as an LCR meter, a resistance meter, and a digital multimeter (Digital Multi Meter: DMM) are used to measure a measurement object (voltage, current, resistance, capacitance, etc.). A test lead to be brought into contact with an element, a circuit to be measured, an electric device to be measured, etc.) is fixedly or detachably connected.

  FIG. 18 shows an example of an insulation resistance meter as an example of a conventional measuring apparatus 1 (Patent Document 1 and the like). The measuring apparatus 1 includes an apparatus main body 100 and a pair of test leads 200 (200a, 200b). The apparatus main body 100 includes an operation unit 101, a display unit 102, a measurement unit (not shown), and the like. In this measuring apparatus 1, the operation unit 101 is provided with a measurement switch 111, a rotary switch 112 having functions of a power switch and a function switch, and the like. The test leads 200a and 200b are connected to the apparatus main body 100 with contacts 201a and 201b that are brought into contact with the object to be measured, holders 202a and 202b that are housings for holding the contacts 201a and 201b, and test leads 200a and 200b. Cables 203a and 203b to be used. The cables 203 a and 203 b include lead wires 204 a and 204 b that connect the contacts 201 a and 201 b to the measurement unit of the apparatus main body 100.

  In the measuring apparatus 1 as shown in FIG. 18, when the test switches 200 a and 200 b are brought into contact with the object to be measured and the measurement switch 111 is pressed, the measurement is started and the measured value is displayed on the display unit 102 of the apparatus main body 100. For example, the measurer checks the measurement values displayed on the display unit 102 of the apparatus main body 100 while bringing the test leads 200a and 200b into contact with the object to be measured. In the case of the measuring apparatus 1 with an automatic hold function, the measured value is held when the measured value is stabilized. Alternatively, the measured value may be held by releasing the measurement switch or pushing a separately provided hold switch. When the measurement value is held in this way, the test leads 200a and 200b may not always be in contact with the object to be measured, but it is necessary to visually check the display unit 102 of the apparatus main body 100 in order to confirm the measurement value. There is.

  On the other hand, FIG. 19 shows an example of a tester in which the function of the apparatus main body is incorporated in the holder 202a of one test lead 200a as another example of the conventional measuring apparatus 1 (Patent Document 2). The measuring apparatus 1 includes an apparatus main body 100 constituting one test lead 200a, and the other test lead 200b connected to a base end portion 100b of the apparatus main body 100 by a cable 203. A contact 201a constituting one test lead 200a is provided at the distal end portion 100a of the apparatus main body 100. In this case, the holder 202a of one test lead 200a also constitutes the housing of the apparatus main body 100. The apparatus main body 100 includes an operation unit 101, a display unit 102, a measurement unit (not shown), and the like. In this measuring apparatus 1, the operation unit 101 is provided with a slide switch 115 having functions of a power switch and a function switch, a specific function input key 116 for operating a specific function such as holding a measured value, and the like. It has been. The other test lead 200b includes a contact 201b, a holder 202b, and the like.

  In the measuring apparatus 1 as shown in FIG. 19, the display unit 102 is provided in the apparatus main body 100 constituting one test lead 200a, and the measured value can be confirmed while keeping a line of sight on the object to be measured.

JP 2000-214194 A JP 2004-20361 A

  However, the conventional technique has the following problems to be improved.

  In the measuring apparatus 1 as shown in FIG. 18, the movement of the line of sight between the object to be measured and the display unit 102 of the apparatus body 100 is large and takes time. For example, a large number of objects to be measured are continuously measured. In some cases, workability may be reduced. When it is necessary to look at the display unit 102 of the apparatus main body 100 while the test lead 200 is in contact with the object to be measured, for example, when the hold function is not used, the test lead 200 is not desired or separated from the object to be measured. The contact of the test lead 200 with the object to be measured may be insufficient due to contact with a place (insulating part or the like), and the reliability of the measurement result may be lowered. Therefore, for example, the test lead 200 is brought into contact with the object to be measured, and then the measured value on the display unit of the apparatus main body is confirmed. If the measured value is abnormal, the contact between the measured object and the test lead 200 is confirmed, and then again. It may be necessary to repeat the operation of confirming the measurement value of the display unit of the apparatus main body 100.

  On the other hand, in the measuring apparatus 1 as shown in FIG. 19, it is possible to confirm the measured value on the display unit 102 without having to take a large line of sight from the portion where the test lead 200 a of the object to be measured is in contact. However, in this measuring apparatus 1, the orientation of the display unit 102 cannot be changed. For this reason, the measured value of the display unit 102 may be confirmed depending on the use environment, for example, when the test lead 200a on the side where the display unit 102 is provided needs to be brought into contact with a location relatively far from the measurer. It may be difficult. In the measuring apparatus 1, the display unit 102 cannot be attached to or detached from the test lead 200a. Therefore, the user of the existing test lead 200 used in the measuring apparatus 1 as shown in FIG. 18 cannot be used for the purpose of improving convenience as necessary.

  Accordingly, an object of the present invention is to provide a measuring apparatus that allows a measurer to easily check a measurement result without looking at the display unit of the apparatus main body in various use environments.

  The above object is achieved by the measuring apparatus according to the present invention. In summary, the present invention includes an apparatus main body including a measurement unit and a first wireless communication unit; a contactor that is brought into contact with an object to be measured; and a holder that holds the contactor. A test lead connected to the apparatus main body via a cable; a display device including a display unit and a second wireless communication unit; a fixing unit detachably fixed to the holder; and the fixing unit And a support device that supports the display device so that the orientation of the display device can be changed at a position spaced from the holder, and the device main body includes the test leads. Information related to the measurement result obtained by the measurement unit based on the signal input via the first wireless communication unit is transmitted via the first wireless communication unit, and the display device receives the information from the first wireless communication unit. The transmitted information is transferred to the second radio Received via the signal unit, a measuring device and displaying the measurement result on the display unit.

  According to an embodiment of the present invention, the fixing portion is a clip that holds the holder. According to an embodiment of the present invention, the support portion can orient the display surface of the display portion in almost all directions. In one embodiment, the support portion is a multi-joint arm having a rod portion and a movable joint portion. The movable joint portion may include a substantially spherical ball portion and a ball holding portion that slidably accommodates and holds the ball portion. In another embodiment, the support portion is a flexible tube. According to a preferred embodiment, at least one of the connecting portion with the fixed portion and the connecting portion with the display device is movable.

  According to an embodiment of the present invention, the display device includes a detection unit that detects information related to the orientation of the display device, and an instruction that instructs a direction of display content on the display unit based on a detection result of the detection unit. Means. In one embodiment, the detection means is an acceleration sensor capable of detecting the direction of gravity, and the indication means displays the gravity direction on the upper side of the display content when viewed in a normal direction. The direction of the display content in the display unit is changed so as to face the upper side of the projected direction on the display surface of the unit or the direction closer to the upper side of the projected direction than the direction orthogonal to the projected direction. In another embodiment, the detecting means is an acceleration sensor capable of detecting the direction of gravity, the display unit has two substantially parallel sides facing each other, and the indicating means has a normal orientation. The upper side of the display content when viewed in the above is the direction of the straight line of the two sides extending substantially perpendicularly toward the outside of the display unit along the display surface of the display unit, indicating the direction of gravity. The direction of the display content on the display unit is changed so as to face a side facing the upper side of the direction projected onto the display surface of the unit.

  According to an embodiment of the present invention, the display device includes a light that illuminates a side opposite to the display surface of the display unit.

  In addition, according to an embodiment of the present invention, the display device includes a camera that photographs an opposite side of the display surface of the display unit. In one embodiment, the display device immediately displays an image captured by the camera on the display unit. In another embodiment, the display device displays the measurement result and an image photographed by the camera on the display unit. In another embodiment, the display device enlarges and displays an image captured by the camera on the display unit. In another embodiment, the device main body and / or the display device includes a storage unit that stores information related to a specific image captured by the camera in association with information related to the specific measurement result. Have.

  According to the present invention, it becomes possible for a measurer to easily check a measurement result without looking at the display unit of the apparatus main body in various use environments.

It is a typical external view of the measuring apparatus which concerns on one Example of this invention. It is a general | schematic functional block diagram of the principal part of the measuring apparatus which concerns on one Example of this invention. It is a typical external view which shows the process in which the display apparatus in one Example of this invention is attached to a test lead with an attachment apparatus. It is a side view which shows the attachment apparatus and display apparatus in one Example of this invention. It is a side view which shows the attachment apparatus and display apparatus in one Example of this invention. It is a side view which shows the attachment apparatus and display apparatus in one Example of this invention. It is a perspective view which shows in more detail the movable joint part of the attachment apparatus in one Example of this invention. It is a side view which shows the modification of the support part of the attachment apparatus in one Example of this invention. It is a side view which shows the modification of the support part of the attachment apparatus in one Example of this invention. It is a perspective view which shows the modification of the fixing | fixed part of the attachment apparatus in one Example of this invention. It is a schematic diagram for demonstrating rotation of the display in the display apparatus in one Example of this invention. It is a flowchart figure which shows the schematic procedure of operation | movement of the measuring apparatus in one Example of this invention. It is a side view which shows the attachment apparatus and display apparatus of the measuring apparatus which concern on the other Example of this invention. It is a general | schematic functional block diagram of the principal part of the measuring apparatus which concerns on the other Example of this invention. It is a schematic diagram which shows an example of the display of the display apparatus in the other Example of this invention. It is a flowchart figure which shows the schematic procedure of operation | movement of the display apparatus in the other Example of this invention. It is a flowchart figure which shows the schematic procedure of operation | movement of the display apparatus in the other Example of this invention. It is a typical external view which shows an example of the conventional measuring apparatus. It is a side view which shows the other example of the conventional measuring apparatus.

  Hereinafter, the measuring apparatus according to the present invention will be described in more detail with reference to the drawings.

Example 1
1. Overall Configuration FIG. 1 is a schematic external view showing the overall configuration of a measuring apparatus 1 according to an embodiment of the present invention. FIG. 2 is a schematic functional block diagram of the main part of the measuring apparatus 1 of the present embodiment. In the present embodiment, the measuring device 1 is a digital insulation resistance meter.

  The measuring device 1 includes a device main body 100, a pair of test leads 200 (200a, 200b), a display device 300, and a mounting device 400. The measuring apparatus 1 according to the present embodiment displays a measurement result obtained by the apparatus main body 100 using a pair of test leads 200 (200a, 200b) and is detachably attached to the one test lead 200a by the attachment device 400. It can be displayed on the device 300. The display device 300 can change the direction of the display surface 321 of the display unit 302 in almost all directions by the mounting device 400. The display device 300 exchanges information with the device main body 100 by wireless communication. This will be described in more detail below.

2. Device Main Body The device main body 100 includes an operation unit 101, a main body display unit 102, a control unit 103, a measurement unit 104, a first wireless communication unit 105, a measurement terminal 106, and the like.

  In the operation unit 101, a measurement switch 111 for starting measurement, a rotary switch 112 having functions of a power switch and a function switch for switching a measurement purpose and a measurement range, and a reference value for using a comparator function are selected. A comparator button 113 for turning on, a lighting button 114 for turning on the backlight of the main body display unit 102, and the like are provided. The rotary switch 112 has a resistance measurement / continuity check range [Ω], [OFF] range, an AC voltage measurement [ACV] range, and a rated measurement voltage setting range as its switching stage. In this embodiment, the rated measurement voltage setting range can be selected from 125 V, 250 V, 500 V, and 1000 V, and any one of 125 V, 250 V, 500 V, and 1000 V from the measurement voltage generation unit of the measurement unit 104 according to this switching. Is applied to the object to be measured. The operation unit 101 inputs a signal corresponding to a function assigned to each switch to the control unit 103.

  The main body display unit 102 is provided on one side surface of a main body case 107 that is a housing of the apparatus main body 100. In the present embodiment, the main body display unit 102 is configured by a liquid crystal display which is a digital display. In the present embodiment, the main body display unit 102 which is a liquid crystal display includes a liquid crystal panel and a backlight for illuminating the liquid crystal panel. The main body display unit 102 displays information related to the measurement result according to the signal input from the control unit 103 in accordance with the designated measurement purpose.

  The control unit 103 comprehensively controls the operation of each unit of the apparatus main body 100. The control unit 103 is connected to an operation unit 101, a main body display unit 102, a measurement unit 104, a first wireless communication unit 105, and the like provided in the apparatus main body 100. The control unit 102 includes a CPU 131 serving as an arithmetic control unit, a ROM 132 serving as an electronic memory serving as a storage unit, a RAM 133, and the like. The CPU 131 controls each unit of the apparatus main body 100 using data stored in the ROM 132 and read into the RAM 133 as necessary, or read into the RAM 133 as needed and temporarily stored. To do. Based on the voltage data and current data from the A / D conversion unit of the measurement unit 104, the control unit 103 calculates, for example, a measured value of the electrical resistance of the object to be measured. And the control part 103 outputs the signal for displaying the measured value of the electrical resistance of a to-be-measured object on the main body display part 102 to the main body display part 102 as information regarding a measurement result, for example. In addition, the control unit 103 causes the first wireless communication unit 105 to transmit, for example, information (measurement value data) Dm of the measured value of the electrical resistance of the object to be measured as information related to the measurement result. As described above, the apparatus main body 100 transmits the information related to the measurement result obtained by the measurement unit 104 based on the signal input via the test lead 200 via the first wireless communication unit 105. Further, the control unit 103 is provided with a switch (not shown) for operating the display device 300 in the operation unit 101 so that the display device 300 can be operated by the device main body 100. Various control signals of the display device 300 can be transmitted from the first wireless communication unit 105 according to the operation of 101.

  The measuring unit 104 measures a predetermined measurement purpose (parameter, physical quantity) for an object to be measured (electrical element to be measured, circuit to be measured, electric device to be measured, etc.). The measurement unit 104 includes a measurement voltage generation unit that applies a predetermined rated measurement voltage to a measurement location of the object to be measured, a current detection unit that detects a current flowing through the measurement object when the rated measurement voltage is applied, and a rated measurement voltage An A / D converter that converts the voltage applied by the measurement voltage generator during application and the current detected by the current detector into digital data at a predetermined sampling interval (for example, twice / second). ing.

  Under the control of the control unit 103, the first wireless communication unit 105 transmits, for example, information (measurement value data) Dm on the measurement value of the electrical resistance of the object to be measured as information related to the measurement result. As described above, when the display device 300 can be operated by the device main body 100, the first wireless communication unit 105 can transmit various control signals of the display device 300. The signal transmitted from the first wireless communication unit 105 is received by the second wireless communication unit 305 of the display device 300 described later. In this embodiment, the antenna of the first wireless communication unit 105 is accommodated in the main body case 107. The first and second wireless communication units 105 and 305 can be configured to perform wireless communication in accordance with, for example, a specific low power wireless standard. In addition, the wireless communication can be configured according to any available wireless communication standard such as the Bluetooth standard or the IrDA standard.

  The apparatus main body 100 is provided with a pair of measurement terminals 106 (106a, 106b). One measurement terminal is the line side measurement terminal 106a, and the line side test lead 200a which is one of the pair of test leads 200 (200a, 200b) is detachably connected. The other measurement terminal is a ground side measurement terminal 106b, and the ground side test lead 200b which is the other test lead of the pair of test leads 200 (200a, 200b) is detachably connected. The pair of test leads 200 (200a, 200b) is connected to the measurement unit 104 via the pair of measurement terminals 106a, 106b.

3. Test Leads Each test lead 200a, 200b is a holder 202a, 202b, which is a housing for holding contacts 201a, 201b and contacts 201a, 201b, which are brought into contact with an object to be measured (its desired measurement location or ground potential), respectively. And cables 203a and 203b for connecting the test leads 200a and 200b to the apparatus main body 100. The cables 203 a and 203 b include lead wires 204 a and 204 b that connect the contacts 201 a and 201 b to the measurement unit 104 of the apparatus main body 100. At the ends of the cables 203a and 203b, plugs (not shown) that allow the lead wires 204a and 204b to be connected to the measurement terminals 106a and 106b are formed. The test leads 200a and 200b are connected to the apparatus main body 100 via the cables 203a and 203b by being detachably attached to (not shown).

  In the present embodiment, the holders 202a and 202b are formed in a substantially cylindrical shape with a synthetic resin as an insulating material, and have a dimensional shape suitable for a measurer to hold by hands. That is, the holders 202a and 202b constitute a grip portion that is gripped by the measurer when performing measurement. The contacts 201a and 201b are exposed along the longitudinal axis direction through holes provided in the tip end portions 221a and 221b, which are one end portions in the longitudinal axis direction of the holders 202a and 202b, so that the contacts 201a and 201b are exposed to the holders 202a and 202b. Is held by. Cables 203a and 203b are connected to base end portions 222a and 222b which are the other ends in the longitudinal axis direction of the holders 202a and 202b.

  Various types of test leads 200 can be used. For example, as the ground-side test lead 200b, a well-known scissor-shaped alligator-type test lead may be used in addition to the rod-shaped pin type test lead as in the present embodiment. Further, the line-side test lead 200a may be provided with a measurement switch that performs the same function as the measurement switch 111 of the operation unit 101 of the apparatus main body 100. The test lead 200 may be fixedly connected to the apparatus main body 100.

4). Display Device The display device 300 includes a display device operation unit 301, a display unit 302, a display device control unit 303, an acceleration sensor 304, a second wireless communication unit 305, and the like.

  Here, as shown in FIG. 1, in this embodiment, the display device case 306 which is a housing of the display device 300 has a substantially parallelepiped shape having a front surface, a back surface (back surface), left and right side surfaces, and upper and lower side surfaces. In the state shown in FIG. 1, the front side is the front side, the opposite side is the back side, the left side is the left side, the right side is the right side, the upper side is the upper side, and the lower side is the lower side. Also called. The left and right side surfaces and the upper and lower side surfaces are substantially orthogonal to the front surface (or back surface). A substantially entire front surface 361 of the display device case 306 is a display surface 321 of the display unit 302 described later. A front surface 361 of the display device case 306 has a substantially rectangular shape that is long in one direction, and a display device operation unit 301 is provided on a left side surface that is a side surface on one end side in the longitudinal direction. Further, the depth, which is the distance between the front surface and the back surface, is shorter than the distance between other surfaces (between the left and right side surfaces and between the upper and lower side surfaces), and the display device case 306 is thin.

  The display device operation unit 301 is provided with a power switch, and a setting switch for inputting signals related to various settings to the display device control unit 303 as necessary. The display device operation unit 301 inputs a signal corresponding to the function assigned to each switch to the display device control unit 303. As described above, in the present embodiment, the operation unit 301 is provided on the left side surface (the left side surface in FIG. 1) of the display device case 306. Note that a touch panel may be provided on the display unit 302 of the display device 300, and the operation unit 301 may be configured by the display in the display unit 302 and the touch panel.

  The display unit 302 is provided on a front surface 361 that is one side surface of the display device case 306. In the present embodiment, the display unit 302 includes a liquid crystal display that is a digital display. In this embodiment, the display unit 302 that is a liquid crystal display includes a liquid crystal panel and a backlight that illuminates the liquid crystal panel. As described above, in this embodiment, almost the entire front surface 361 of the display device case 306 is the display surface 321 of the display unit 302. The display unit 302 displays information related to the measurement result according to the signal input from the display device control unit 303 according to the designated measurement purpose. As will be described in detail later, the display device control unit 302 displays information related to the measurement result sent from the device main body 100 via the first and second wireless communication units 105 and 305. As described above, the display device 300 receives the information transmitted from the first wireless communication unit 105 via the second wireless communication unit 305 and displays the measurement result on the display unit 302. In this embodiment, the display unit 302 is a color liquid crystal display. For example, the display unit 302 is a monochrome liquid crystal panel or a count LED display panel that selectively turns on or off a plurality of preset display elements. Also good. The present invention does not limit the display method of the display unit 302 of the display device 300 at all.

  The display device control unit 303 comprehensively controls the operation of each unit of the display device 300. Connected to the display device control unit 303 are a display device operation unit 301, a display unit 302, an acceleration sensor 304, a second wireless communication unit 305, and the like provided in the display device 300. The display device control unit 102 includes a CPU 331 serving as an arithmetic control unit, a ROM 332 serving as an electronic memory serving as a storage unit, a RAM 333, and the like. The CPU 331 controls each unit of the display device 300 using data stored in the ROM 332 and read into the RAM 333 as necessary, or read into the RAM 333 as needed and temporarily stored. To do. For example, information (measurement value data) Dm of the measured value of the electrical resistance of the object to be measured is input to the display device control unit 303 as information related to the measurement result received by the second wireless communication unit 305. Then, the display device control unit 303 outputs, for example, a signal for causing the display unit 302 to display a measurement value of the electrical resistance of the object to be measured as information related to the measurement result. Further, as described above, when the display device 300 can be operated by the device main body 100, the display device control unit 303 receives various types of the display device 300 received by the second wireless communication unit 305. The display device control unit 303 can control each unit of the display device 300 according to the control signal.

  The display device 300 includes an acceleration sensor 304 that can detect the direction of gravity as detection means for detecting information related to the orientation of the display device 300. As the acceleration sensor 304, for example, a uniaxial, biaxial, or triaxial MEMS (Micro Electro Mechanical System) acceleration sensor known in the capacitance detection method, piezoresistive method, thermal detection method, or the like is used. it can. For example, a capacitance detection type triaxial acceleration sensor manufactured by Analog Devices, Inc. can be suitably used. The number of acceleration sensors 304 is not necessarily one, and a plurality of acceleration sensors 304 can be used alone or in combination. In the present embodiment, the acceleration sensor 304 is a three-axis acceleration sensor of the electrostatic capacitance detection method, and is integrally attached to a substrate (not shown) installed inside the display device case 306. The operation of the acceleration sensor 304 will be described in detail later.

  The second wireless communication unit 305 receives, for example, information (measurement value data) Dm on the measured value of the electrical resistance of the object to be measured, as information related to the measurement result transmitted from the first wireless communication unit 105. Further, as described above, when the display device 300 can be operated by the device main body 100, the second wireless communication unit 105 transmits the display device 300 transmitted from the first wireless communication unit 105. Various control signals can be received. The second wireless communication unit 305 inputs the received signal to the display device control unit 303. In this embodiment, the antenna of the second wireless communication unit 305 is accommodated in the display device case 306.

5. Attachment Device The attachment device 400 may be attached to any one of the pair of test leads 200 (200a, 200b). Usually, the attachment to the line-side test lead 200a is the visibility of the display unit 302 of the display device 300, and the like. From the point of view, it is preferable. In the present embodiment, description will be made assuming that it is attached to the line side test lead 200a.

  FIG. 3 is a schematic external view showing a process of attaching the attachment device 400 to the test lead 200a. FIGS. 4 and 5 are side views showing the attachment device 400 attached to the test lead 200a as viewed from the base end 222a side and the tip end 221a side of the test lead 200a. 6 is a side view of the mounting device 400 as seen from the left side in FIG.

  The attachment device 400 includes a fixing portion 401 that is detachably fixed to the holder 202a of the test lead 200a, and the display device 300 so that the orientation of the display device 300 can be changed at a position that is attached to the fixing portion 401 and separated from the holder 202a. And a support portion 402 that supports the.

  In this embodiment, the fixing portion 401 is a clip (clamp) that holds the holder 202a of the test lead 200a. More specifically, the fixed portion 401 includes a first swing portion 412 and a second swing portion 413 that are swingably connected to each other about the swing shaft 411. The first and second oscillating portions 412 and 413 are provided with contact surfaces 414 and 415 which can abut on each other at the tip portion which is one end portion in a direction substantially orthogonal to the oscillating shaft 411, and in the same direction. Knob portions 416 and 417 which are moved in a direction approaching each other by an operator are provided at the base end portion which is the other end portion of the head. The fixed portion 401 is provided with a torsion spring 418 as urging means for urging the first and second oscillating portions 412 and 413 so that the abutting surfaces 414 and 415 move in the abutting direction. ing. In the present embodiment, a grip for gripping a side surface along the longitudinal axis direction of the holder 202a between the first and second swinging portions 412 and 413 between the contact surfaces 414 and 415 and the swinging shaft 411. A portion 419 is formed. In particular, in this embodiment, the first and second oscillating portions 412 and 413 are formed with inner peripheral surfaces having a substantially semicircular cross section substantially orthogonal to the oscillating shaft 411. The substantially semicircular cross section is substantially circular with the contact surfaces 414 and 415 being in contact with each other. Further, when the knobs 416 and 417 are operated to separate the contact surfaces 414 and 415, the holder 202a moves in a direction substantially perpendicular to the longitudinal axis direction so that it can pass between the contact surfaces 414 and 415. It has become. As a result, the side surface of the intermediate portion 223a between the distal end portion 221a and the proximal end portion 222a of the holder 202a is pressed with an appropriate pressure by the grip portion 419, and the fixing portion 401 is attached to and detached from the test lead 200a. Can be fixed as possible.

  In the present embodiment, the support portion 402 is an articulated arm having a rod portion 421 (421a, 421b) and a movable joint portion 422 (422a, 422b, 422c). More specifically, as shown in FIG. 5, the first movable joint portion 422a, the first arm portion 421a, the second movable joint portion 422b, and the second portion are directed from the fixed portion 401 side toward the display device 300. The arm portion 421b and the third movable joint portion 422c are provided. As shown in more detail in FIG. 7, in the present embodiment, the first, second, and third movable joint portions 422a, 422b, and 422c are each capable of sliding with a substantially spherical ball portion 423 and the ball portion 423. And a ball holding portion 424 that is housed and held in the housing.

  In particular, in this embodiment, the ball holding portion 424 constituting the first movable joint portion 422a is fixed (integrated molding) to one side surface 412a of the first swinging portion 412 of the fixed portion 401. In addition, a ball portion 423 constituting the first movable joint portion 422a is fixed (integrated molding) to an end portion on the fixed portion 401 side in the longitudinal axis direction of the first arm portion 421a, and is formed on an end portion on the display device 300 side. A ball holding portion 424 constituting the second movable joint portion 422b is fixed (integrated molding). Similarly, the ball portion 423 constituting the second movable joint portion 422b is fixed (integrated molding) to the end portion on the fixed portion 401 side in the longitudinal axis direction of the second arm portion 421b, and the end portion on the display device 300 side In addition, a ball holding portion 424 constituting the third movable joint portion 422c is fixed (integrated molding). The ball portion 423 constituting the third movable joint portion 422c is fixed (integrated molding) to the back surface 362 of the display device case 306. In the present embodiment, the first and second arm portions 421a and 421b, the first, second and third movable joint portions 422a, 422b and 422c, and at least the first and second swinging portions 412 of the fixed portion 401 are used. 413, at least the display device case 306 of the display device 300 is made of synthetic resin.

  As shown in FIG. 7, in each movable joint portion 422, the ball holding portion 424 has a substantially spherical inner shape in which an opening 424a is formed on the side opposite to the connecting portion with the arm portion 421 (or the fixed portion 401). The shape has a peripheral surface 424d and an outer peripheral surface 424e. By pushing the ball portion 423 from the opening 424a of the ball holding portion 424 toward the inner peripheral surface 424d of the ball holding portion 424, the ball portion 423 and the ball holding portion 424 are elastically engaged (snap fit). The ball portion 423 can move (slide) relative to the ball holding portion 424 while being accommodated in the ball holding portion 424. Since the shape of the inner peripheral surface 424d of the ball holding portion 424 is smaller than the size of the outer peripheral surface 423a of the ball portion 423 in a natural state (non-elastically deformed state), the outer peripheral surface 423a of the ball portion 423 and the ball The inner peripheral surface 424d of the holding portion 424 can be frictionally engaged and the relative positions of each other can be held at a desired position. The holding force by this frictional engagement is strong enough to hold the display device 300 supported by the attachment device 400 at a predetermined position, and the operator can relatively easily move the movable joint portion 422 to move the display device 300. It is set weak enough to change the position and orientation.

  Further, the ball holding portion 424 has cuts 424b and 424c formed at opposing positions from the opening 424a side toward the connecting portion side with the arm portion 421 (or the fixing portion 401). The notches 424b and 424c are formed in such a size that the arm portion 421 (or the connecting portion with the display device 300) can pass or slide inside thereof. Therefore, the axial direction A1 of the arm part 421 (or the connecting part with the display device 300) adjacent to the ball part 423 is the axial direction of the arm part 421 (or the connecting part with the fixing part 401) adjacent to the ball holding part 424. It can be deflected to a direction substantially perpendicular to A2. Further, for example, the ball portion 423 and the ball holding portion 424 can rotate around the axial directions A1 and A2 in a state where the axial directions A1 and A2 are on the same straight line. Therefore, for each movable joint portion 422, each position in the axial direction A1 is free to be substantially hemispherical on each side of the position from a plane passing through the approximate center of the ball holding portion 424 and substantially perpendicular to the axial direction A2. Can be moved to.

  Therefore, the display device 300 can be freely moved within the movable range of the entire support unit 402 according to the movable range of each movable joint unit 422 as described above. As a result, the display device 300 is moved from a position close to the measurer to a position far from the measurer on the plane substantially orthogonal to the longitudinal axis direction of the holder 202a of the test lead 200a as shown in FIGS. For example, as shown in FIG. 6, the test lead 200 can be moved from a position close to the measurer to a position far from the measurer or vice versa. Further, in this embodiment, the movable range of each movable joint portion 422 is the above-described movable range, so that the support portion 402 has the display surface 321 of the display portion 302 of the display device 300 in almost all directions. Can be oriented. Furthermore, in the present embodiment, the movable range of each movable joint portion 422 is the above-described movable range, so that the third movable joint portion 422c (the connection between the second arm portion 421 and the display device 300). The display device 300 can be freely rotated in the horizontal direction, the vertical direction, and the direction between them at each position where the (part) is disposed.

  In addition, the length of each arm part 421 and the number of the movable joint parts 422 can be suitably selected according to a desired movable range. For example, as shown in FIG. 8, the support portion 402 includes a ball holding portion 424 constituting the first movable joint portion 422a fixed to the fixed portion 401 and a ball portion 423 constituting the first movable joint portion 422a. And a ball holding portion 424 constituting the second movable joint portion 422b, one arm portion 421 provided at both ends, and a second movable joint portion 422b fixed to the back surface 362 of the display device case 306. And a ball portion 423. Alternatively, the movable joint portion 422 may be fixed to the connecting portion between the fixing portion 401 and the supporting portion 402 and / or the connecting portion between the supporting portion 402 and the display device 300 without being provided. However, from the viewpoint of improving the degree of freedom of the orientation of the display device 300, it is preferable that at least one of the connection portion with the fixed portion 401 and the connection portion with the display device 300 is movable. The at least one connecting portion can be configured by the movable joint portion 422 in the present embodiment, for example. In this embodiment, the second arm portion 421b is shorter than the first arm portion 421a. However, the second arm portion 421b may have the same length, or the first arm portion 421a is shorter. May be.

  In this embodiment, the support portion 402 is an articulated arm, but the present invention is not limited to this, and it is only necessary that the display device 300 can be moved within a desired movable range to change its orientation and position. For example, as shown in FIG. 9, a known flexible tube (flexible arm) may be used as the support portion 402 as a lamp support member or the like. Also in this case, it is preferable that at least one of the connecting portion with the fixing portion 401 and the connecting portion with the display device 300 is movable. However, since the flexible tube can generally be bent (curved) more freely than the articulated arm of this embodiment and the orientation and position of the display device 300 can be changed, the display can be performed even when each of the connecting portions is fixed. The degree of freedom of the orientation of the device 300 is relatively high.

  In this embodiment, the fixing portion 401 is a clip. However, the fixing portion 401 is not limited to this. It is sufficient that the supporting portion 402 can be fixed to the test lead 200a so that the display device 300 can be held at a desired position. For example, as shown in FIG. 10, it may be a molded product made of a partially cut-out annular synthetic resin that elastically engages (snap fit) with the holder 202a of the test lead 200a.

6). In this embodiment, as described above, the direction of the display device 300 can be changed, and the display unit 302 of the display device 300 has one side facing upward in the direction of gravity, facing downward, Or it turns to the direction between them. However, it is preferable from the viewpoint of visibility that the display content 322 itself in the display unit 302 of the display device 300 is in a predetermined direction with respect to the direction of gravity or a direction close to the predetermined direction.

  Therefore, in the present embodiment, the display device 300 includes the acceleration sensor 304 as a detection unit that detects information related to the orientation of the display device 300 as described above. In addition, the display device 300 includes instruction means for instructing the orientation of the display content 322 on the display unit 302 based on the detection result of the acceleration sensor 304. In the present embodiment, the display device control unit 303 has a function as an instruction unit.

  As described above, in the present embodiment, the acceleration sensor 304 is a capacitance detection type three-axis acceleration sensor, and is integrally attached to a substrate installed inside the display device case 306. In this embodiment, the short side direction (direction perpendicular to the upper and lower side surfaces) of the display device case 306 is the X axis, the long direction (direction perpendicular to the left and right side surfaces) is the Y axis, and the front surface 361 of the display device case 306 (display surface 321). The direction orthogonal to) is the Z axis. The acceleration sensor 304 outputs a signal corresponding to the angle of the X axis, the Y axis, and the Z axis with respect to the gravity direction, and inputs the signal to the display device control unit 303. The display device control unit 303 can calculate the angle between the gravity direction and the X, Y, and Z axes, and determine the orientation (posture) of the display device 300 from the result.

  Here, referring to FIG. 11, two opposite sides in the longitudinal direction of display portion 302 are defined as long sides 302a and 302b, and two opposite sides in the short direction orthogonal to these long sides 302a and 302b are defined as short sides 302c. , 302d. The direction in which the direction of gravity is projected onto the display surface 321 of the display unit 302 (hereinafter also referred to as “gravity projected direction”) is indicated by an arrow G in the figure. The directions of straight lines extending substantially vertically from the long sides 302a, 302b, short sides 302c, 302d along the display surface 321 toward the outside of the display unit 302 are referred to as normal directions (broken lines N in the figure).

  At this time, from the detection result of the acceleration sensor 304, the display device control unit 303 determines whether one of the normal directions N of the long sides 302a and 302b is the gravitational projection direction G as shown in FIGS. Or a direction close to the upper side (sideways), for example, as shown in FIGS. 11D and 11F, the normal direction N of the short sides 302a and 302b is above the gravitational projection direction or It can be determined whether or not it is in a state (vertical orientation) facing the direction close to the upper side. Then, the display device control unit 303 outputs a control signal to the display unit 302 so as to change the direction of the display content 322 on the display unit 302 based on the detection result of the acceleration sensor 304.

  In this embodiment, it is only necessary that the gravitational acceleration can be detected based on the detection result of the acceleration sensor 304. Therefore, the display device control unit 303 ignores the motion acceleration instantaneously applied to the display device 300 in a certain direction. It is like that.

  For example, the display device control unit 303 can change the direction of the display content 322 in the display unit 302 so that the upper side of the display content 322 when viewed in the normal direction is directed to the upper side of the gravity projection direction G. In this case, for example, as shown in FIG. 11A, the upper side of the display content 322 facing the long side 302a located on the upper side of the gravity projection direction G is shown in FIG. As the direction changes, the direction is changed so as to always face the upper side of the gravity projection direction G. At this time, the display device control unit 303 can appropriately change the size so that the display content 322 fits in the display unit 302.

  Further, for example, the display device control unit 303 is configured so that the upper side of the display content 322 when viewed in the normal direction is closer to the upper side of the gravity projection direction G than the direction orthogonal to the gravity projection direction G. The direction of the display content 322 on the display unit 302 can be changed. For example, the upper side of the display content 322 when viewed in the normal direction is the two opposite sides (for example, the long sides 302a and 302b) that serve as the reference of the display unit 302 and the other two sides that are orthogonal to the two sides. , The direction of the display content 322 on the display unit 302 can be changed so that the normal direction N faces the side closer to the upper side of the gravity projection direction G. In this case, for example, as shown in FIG. 11A, the upper side of the display content 322 facing the long side 302a located on the upper side of the gravity projection direction G is immediately changed even if the orientation of the display unit 302 is changed. For example, as shown in FIG. 11C, the normal direction N of one short side 302c is closer to the upper side of the gravity projection direction G (that is, 45 degrees or less with respect to the gravity projection direction G). The orientation is changed so as to face the short side 302c.

  Further, for example, the display device control unit 303 indicates that the upper side of the display content 322 when viewed in the normal direction is the normal direction N of the two opposite sides (for example, the long sides 302a and 302b) serving as a reference. The direction of the display content 322 on the display unit 302 can be changed so as to face the side that is closer to the upper side of the gravity projection direction G (FIGS. 11A and 11E). In this case, when the display unit 302 rotates so as to approach the state shown in FIG. 11A from the state shown in FIGS. 11D and 11F, the display content 322 becomes the direction shown in FIG. When the display unit 302 is rotated so as to approach the state shown in FIG. 11E, the display content 322 is oriented as shown in FIG. The orientation of the display content 322 in the states of FIGS. 11D and 11F may be the orientation shown in either FIG. 11A or 11E.

  In addition, the normal orientation of the display content is the case where the original upper side in social convention is the upper side and the lower side is the lower side so that the original information indicated by the display content can be recognized. The direction. The upper and lower in this case does not mean only a strict vertical direction. If the display content is character information, it is the direction when the characters are displayed such that the upper side is the upper side and the lower side is the lower side for social wisdom. However, the display content is not limited to character information, and may be any form such as a pointer-type meter as long as it indicates a measurement result. If various setting information corresponding to the measurement function is displayed together with the measurement result, the display is usually displayed in the same direction.

7). Operation FIG. 12 shows an example of a schematic procedure of the operation of the measurement apparatus 1 when performing measurement. In the apparatus main body 100, when the power is turned on and set to a desired measurement purpose / measurement range, and when the power of the display device 300 is turned on as will be described later, a wireless connection with the display device 300 is established. (S101). Thereafter, the measurement switch 111 is pressed to start measurement (S102). And the control part 103 outputs the information which concerns on a measurement result to the main body display part 102, and displays a measurement result on the main body display part 102 (S103). At the same time, the control unit 103 causes the first wireless communication unit 105 to transmit information related to the measurement result (S104). Thereafter, the measurement switch 111 is released to complete the measurement (measurement value is held) (S105). Thereafter, the power of the apparatus main body 100 is turned off (S106).

  On the other hand, in the display device 300, when the power is turned on and the power of the device main body 100 is turned on as described above, the wireless connection with the device main body 100 is established (S201). At this time, the measurer can appropriately change the orientation and position of the display device 300 in view of the visibility of the display unit 302 and the operability of the test lead 200a. Thereafter, information related to the measurement result received by the second wireless communication unit 305 is input to the display device control unit 303 (S202). Then, the display device control unit 303 outputs information related to the measurement result to the display unit 302 and causes the display unit 302 to display the measurement result (S203). At this time, the display device control circuit 303 can appropriately change the orientation and size of the display content 322 in accordance with a signal from the acceleration sensor 304 and display the display content on the display unit 302. Thereafter, the power supply of the display device 300 is turned off (S204).

8). As described above, according to the present embodiment, the measured value can be confirmed by looking at the display unit 302 of the display device 300 without looking at the main body display unit 102 of the device main body 100. Therefore, it is possible to perform measurement while bringing the test lead 200 into contact with the object to be measured more reliably. Therefore, it is possible to improve the reliability of measurement results and workability. Further, the reciprocation of the line of sight between the main body display unit 102 of the apparatus main body 100 and the measurement location is reduced, and the measurement time can be shortened. Further, the display device 300 can be attached to the existing test lead 200 by the attachment device 400, and the display device 300 can be used for various test leads 200. In addition, the display unit 302 of the display device 300 can be moved to a position that can be easily seen by the measurer or can be changed in direction (for example, reversed) depending on the environment to be used, and workability can be improved.

Example 2
Next, another embodiment of the measuring apparatus according to the present invention will be described. The basic configuration and operation of the measuring apparatus of the present embodiment are the same as those of the first embodiment. Accordingly, elements having the same functions or configurations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 13 is a side view of the state in which the display device 300 according to the present embodiment is supported by the mounting device 400 as seen from the same direction as FIG. FIG. 14 is a schematic functional block diagram of the main part of the measuring apparatus 1 of the present embodiment.

  In the present embodiment, the display device 300 includes a light 307 that illuminates the side opposite to the display surface 321 of the display unit 302. The light 307 is provided on the back surface 362 of the display device case 306 and illuminates a predetermined range in a direction opposite to the direction in which the display surface 321 faces in a direction substantially orthogonal to the display surface 321. The light 307 is preferably configured to illuminate the position of the contact 201a of the test lead 200a with sufficient brightness from the position of the display device 300 attached to the test lead 200a by the attachment device 400.

  As the light source of the light 307, for example, an LED or an incandescent lamp can be used. LEDs are preferred because they are small and have sufficiently high brightness. In order to give directivity to the irradiation light, the light 307 may include an optical component such as a light shielding unit or a lens in addition to the light source.

  In the present embodiment, the operation unit 301 of the display device 300 is provided with a switch for switching on / off the light 307. Further, a switch having the same function may be provided in the operation unit 101 of the apparatus main body 100 so that the operation can be performed from the apparatus main body 100 side.

  Since the display device 300 can change the orientation and position of the display device 300, the direction and position of the display device 302 can be changed in consideration of the visibility of the display unit 302 and the illumination direction of the light 307. Can be illuminated.

  In the present embodiment, the display device 300 includes a camera 308 that captures an image of the display unit 302 opposite to the display surface 321. The camera 308 is provided on the back surface 362 of the display device case 306 and captures a predetermined range in a direction opposite to the direction in which the display surface 321 faces in a direction substantially orthogonal to the display surface 321. The camera 308 is preferably configured so that the position of the contact 201a of the test lead 200a can be photographed with a sufficient visual field from the position of the display device 300 attached to the test lead 200a by the attachment device 400.

  As the camera 308, it is possible to use a digital camera having an arbitrary configuration that includes a lens, a CCD or CMOS as an image sensor, an image processing circuit that generates image information from a signal obtained by the image sensor, and the like. it can. The camera 308 can be configured to have a sufficient depth of field so that no particular focusing is required, but may be configured to allow focusing.

  In this embodiment, the display device 300 can display an image captured by the camera 308 on the display unit 302 in a live view. That is, the display device control unit 303 causes the display unit 302 to instantaneously display an image captured by the camera 308 on the display unit 302. Here, instant display means that there is a delay corresponding to the signal processing time in the image processing circuit of the camera 308 and the signal processing time to be displayed on the display unit 302, as will be easily understood by those skilled in the art. Including meaning.

  In the present embodiment, the display device 300 can display an enlarged image captured by the camera 308 on the display unit 302. Here, the enlarged display means that when the vicinity of the contact 201a of the test lead 200a is photographed by the display device 300 attached to the test lead 200a, the measurement having the test lead 200a according to a general usage method. What is necessary is just to be able to visually recognize the vicinity of the contactor 201a larger than the case where a person sees with the naked eye. The camera 308 may have a zoom-in / zoom-out function so that the measurer can change the enlargement ratio as appropriate. The camera 308 may be configured to be able to optically magnify an object and to magnify the signal by processing an image obtained by imaging the object.

  In this embodiment, the display device 300 simultaneously displays the measurement result M transmitted from the device main body 100 and the image I photographed by the camera 308 on the display unit 302, as shown in FIG. Can do.

  Preferably, the device main body 100 and / or the display device 300 is provided with a storage unit 500 that stores information related to a specific image captured by the camera 308 in association with information related to a specific measurement result. Yes (FIG. 14). As the storage unit 500, a non-volatile memory such as a flash memory, a magnetic recording medium such as a hard disk, or the like can be suitably used. In addition, it is preferable that the storage unit 500 is a removable storage medium that is detachable from the apparatus main body 100 and the display device 300 in view of ease of use of subsequent image information and measurement result information. However, the present invention is not limited to this, and the apparatus main body 100 or the display apparatus 300 is provided with an interface unit (not shown) that enables communication with an external device (personal computer) or the like. Information in the storage unit 500 may be read from an external device via the interface unit.

  In this embodiment, the operation unit 301 of the display device 300 is provided with a switch for instructing start or stop of shooting by the camera 308, a focus switch for the camera 308, and a zoom-in / zoom-out switch as necessary. Further, a switch having the same function may be provided in the operation unit 101 of the apparatus main body 100 so that the operation can be performed from the apparatus main body 100 side.

  FIG. 16 shows an example of a schematic procedure of the operation of the display device 300 when performing measurement using the camera 308 of the display device 300. In the display device 300, when the power source is turned on and the power source of the device main body 100 is turned on as described above, the wireless connection with the device main body 100 is established (S301). Thereafter, for example, when a shooting start switch of the camera 308 provided in the operation unit 301 of the display device 300 is pressed, shooting by the camera 308 is started, and live view display on the display unit 302 is started (S302). Then, information related to the measurement result received by the second wireless communication unit 305 is input to the display device control unit 303 (S303). The display device control unit 303 outputs information related to the measurement result to the display unit 302 and causes the display unit 302 to display the measurement result together with the live view display (S304). At this time, the display device control circuit 303 can appropriately change the direction and size of the display content 322 (measurement result and live view display) in accordance with a signal from the acceleration sensor 304 and display the display content on the display unit 302. . Thereafter, the power of the display device 300 is turned off (S305).

  FIG. 17 shows an example of a schematic procedure of the operation of the display device 300 when the measurement result and the image are simultaneously stored using the camera 308 of the display device 300. Steps S401 to S404 in FIG. 17 are the same as steps S301 to S304 in FIG. Thereafter, the display device control circuit 303 determines whether the measurement value is held when the measurement switch 111 is released in the device main body 100 or whether the measurement value is automatically held when the measurement value is stabilized. Judgment is made (S405). Whether or not the measurement value is held can be determined by the display device control unit 303 by inputting information indicating the fact from the device main body 100 via the first and second wireless communication units 105 and 305. It has become. If the measurement value is not held, the display of the measurement value is repeatedly updated. On the other hand, when determining that the measurement value is held, the display device control unit 303 associates the measurement value with the measurement value and causes the storage unit 500 to store the image captured by the camera 308 at that time as still image information. (S406). Thereafter, the power supply of the display device 300 is turned off (S407). Here, when the storage unit 500 of the display device 300 is configured to store the measurement value and the image in association with each other in the storage unit 500 of the apparatus main body 100, the display device control unit 303. Causes the second wireless communication unit 305 to transmit the still image information. Then, the first wireless communication unit 105 of the apparatus main body 100 receives this information, and the control unit 103 causes the storage unit 500 of the apparatus main body 100 to store the still image information in association with the held measurement value. be able to.

  Note that the image information stored in association with the measurement value is not limited to still image information. For example, a predetermined period including a time point at which a held measurement value is obtained (even a predetermined period before or after that time point). (Good) video (video) information may be stored.

  As described above, according to the present embodiment, the test lead 200 can be brought into contact with the object to be measured more reliably by turning on the light 307 even in a dark environment, and the reliability and work of the measurement result can be achieved. It is possible to improve the performance. In addition, by displaying the contact location of the test lead 200 to the object to be measured with the camera 308, it is possible to simultaneously store the image of the measurement location and the measurement value, and easily confirm the measurement value for the measurement location even after the measurement. be able to. Further, the contact portion of the test lead 200 with the object to be measured is magnified by the camera 308, so that the contact of the test lead 200 with the object to be measured such as a small electrical component can be made more reliable and the measurement result can be trusted. And workability can be improved.

  In the present embodiment, the display device 300 includes both the light 307 and the camera 308. Thereby, by photographing with the camera 308 while illuminating with the light 307, the operability in the dark environment and the reliability of the measurement result are dramatically improved. However, the light 307 and the camera 308 may have only one of these. In this case, the same effect as described above corresponding to each of the light 307 and the camera 308 can be obtained.

Others In the above-described embodiments, the measuring instrument is described as an insulation resistance meter, but the present invention is not limited to this. For example, the measuring device may be an LCR meter, a digital multimeter, a tester, or the like, and the measurement purpose may be current, voltage, capacitance, or the like. The apparatus main body may be an analog tester or an insulation resistance meter, and the same effect as in the above-described embodiment can be obtained by transmitting data obtained by A / D conversion of the measurement result to the display device.

  In the above-described embodiments, the measurement result is described as a measurement value. However, for example, in the case of a measurement apparatus having a comparator function, the measurement result is a determination result by comparing the measurement value with a reference value (the measurement value is the upper limit). It may be a value exceeding a value, whether it is less than a lower limit value, whether it is a lower limit value or more and an upper limit value or less).

DESCRIPTION OF SYMBOLS 1 Measuring apparatus 100 Apparatus main body 105 1st radio | wireless communication part 200 Test lead 202 Holder 300 Display apparatus 302 Display part 305 2nd radio | wireless communication part 400 Mounting apparatus 401 Fixing part 402 Support part

Claims (16)

An apparatus main body comprising a measurement unit and a first wireless communication unit;
A contact that is brought into contact with an object to be measured; a holder that holds the contact; and a test lead that is connected to the apparatus main body via a cable;
A display device comprising: a display unit; and a second wireless communication unit;
A fixing portion that is detachably fixed to the holder; and a support portion that supports the display device so that the orientation of the display device can be changed at a position that is attached to the fixing portion and spaced from the holder. A mounting device;
Have
The apparatus main body transmits information on a measurement result obtained by the measurement unit based on a signal input via the test lead, via the first wireless communication unit,
The display device receives information transmitted from the first wireless communication unit via the second wireless communication unit, and displays the measurement result on the display unit.   The measuring apparatus according to claim 1, wherein the fixing portion is a clip that holds the holder.   The measuring apparatus according to claim 1, wherein the support unit can orient the display surface of the display unit in almost all directions.   The measuring apparatus according to claim 1, wherein the support part is a multi-joint arm having a rod part and a movable joint part.   The measuring apparatus according to claim 4, wherein the movable joint portion includes a substantially spherical ball portion and a ball holding portion that slidably accommodates and holds the ball portion.   The measuring apparatus according to claim 1, wherein the support portion is a flexible tube.   The measurement apparatus according to claim 1, wherein at least one of the support part is movable among a connection part with the fixed part and a connection part with the display device.   The display device includes detection means for detecting information related to the orientation of the display device, and instruction means for instructing the direction of display content on the display unit based on a detection result of the detection means. The measuring device according to any one of claims 1 to 7.   The detection means is an acceleration sensor capable of detecting the direction of gravity, and the instruction means projects the gravity direction onto the display surface of the display unit when the display content is viewed in a normal direction. The direction of the display content in the display unit is changed so as to face an upper side of the direction or a direction closer to an upper side of the projected direction than a direction orthogonal to the projected direction. Measuring device.   The detection means is an acceleration sensor capable of detecting the direction of gravity, the display section has two substantially parallel sides facing each other, and the indication means is the display content when viewed in a normal direction. The upper side of the two sides is a direction in which a direction of a straight line extending substantially perpendicularly toward the outside of the display unit along the display surface of the display unit is projected on the display surface of the display unit. The measuring device according to claim 8, wherein the direction of the display content in the display unit is changed so as to face a side facing a direction close to the upper side of the display.   The said display apparatus has a light which illuminates the opposite side to the display surface of the said display part, The measuring apparatus as described in any one of Claims 1-10 characterized by the above-mentioned.   The measurement apparatus according to claim 1, wherein the display device includes a camera that captures an image of a side opposite to a display surface of the display unit.   The image forming apparatus according to claim 12, wherein the display device immediately displays an image captured by the camera on the display unit.   The measurement device according to claim 12 or 13, wherein the display device displays the measurement result and an image photographed by the camera on the display unit.   The measurement apparatus according to claim 12, wherein the display device enlarges and displays an image captured by the camera on the display unit.   The said apparatus main body and / or the said display apparatus have a memory | storage part which memorize | stores the information which concerns on the specific image image | photographed with the said camera in relation with the information which concerns on the said specific measurement result. The measuring apparatus as described in any one of 12-15.

Images