JP4721877B2 - Electronic equipment - Google Patents

Description

  The present invention relates to an electronic device including a connection terminal to which a signal line or the like is connected.

  In an electronic device such as an industrial measurement device, control device, or data collection device, various data and contact signals are output to the external device, and data and signals from the external device are input. An external connection terminal. This external connection terminal is configured by providing one or a plurality of terminal blocks inside or on the back of the apparatus.

  For example, the atmospheric environment monitoring system is configured by connecting a measurement station and a central station provided in various places via a communication line. Various automatic measuring devices are installed in this measuring station. Then, the data measured by the automatic measuring device and the state monitoring signal indicating the operating state or abnormality of the measuring device are transmitted to the telemeter slave station device or the communication data logger in the measuring station via the connection cable and specified format. Edited and edited and sent periodically to the central office via a telephone line. Further, from the telemeter slave station device or the like, signals such as reset and automatic calibration start are transmitted to the automatic measurement device, and the automatic measurement device is controlled.

These automatic measurement devices, telemeter slave station devices, and the like are usually installed along the wall surface of the measurement station (indoor). For this reason, when the terminal block for external connection is arranged on the back of the device, it is necessary to secure a work space for performing wiring work and input / output check in advance, or to separate the device from the wall surface every time work is performed. It was necessary to move to and secure work space.
Further, when the terminal block is exposed outside the apparatus, the terminal block can be said to be in a state where it can be easily contacted. For this reason, it may cause unexpected damage to the apparatus, adversely affect the operation of the system, and there is a problem that dust accumulates. In order to prevent such a situation, it is conceivable to arrange a terminal block inside the apparatus. However, it is preferable to adopt the standardized external dimensions of the device, and it is desirable to minimize the entire device. Therefore, it is possible to secure a sufficient space inside the device for connection work. Have difficulty. For this reason, there is a problem that only a very narrow space can be secured inside the apparatus. Moreover, since the inside of the box-shaped apparatus with which the circumference | surroundings were covered was dark, there existed a problem that workability | operativity was bad.

  In order to solve such a problem, for example, a structure as in Patent Document 1 has been proposed. Patent Document 1 discloses a terminal block in which a plurality of terminal blocks are planarly attached to an apparatus main body. Specifically, the terminal block is provided with a mounting hole for mounting the terminal block to the device body and a work mounting hole for mounting in a state where other terminal blocks are stacked on the terminal block. Yes. And at the time of the connection work of the said terminal block, it temporarily fixes to the work attachment part of the other terminal block attached to the apparatus main body.

Japanese Utility Model Publication No. 6-38163

  However, in such a structure, the temporarily fixed terminal block is not electrically connected to the apparatus. Therefore, in this state, the input / output check operation for confirming the electrical connection state cannot be performed. That is, in such a structure, even if the workability during the connection work is improved, the workability during the input / output check work is not improved. For this reason, there is a problem that the terminal block temporarily connected and connected must be attached to a predetermined place in the apparatus having poor workability.

  The present invention has been made to solve the technical problems as described above, and an object of the present invention is to provide an electronic device that makes it possible to improve the workability of the connection terminals. .

  For this purpose, an electronic device to which the present invention is applied is an electronic device that includes a gantry and incorporates an electric control unit. The connection terminal portion connected to the electric control unit is detachably attached to the gantry, and the connection terminal portion can be detached from the gantry and moved out of the gantry while being connected to the electric control unit. It is possible to check the connection state of the connection terminal portion outside.

  It may further include a detection unit that detects that the connection terminal unit is attached to the gantry. Moreover, it can be characterized by further including a placement portion for placing the connection terminal portion when the connection terminal portion is moved out of the gantry. Moreover, it can be characterized by further including a holding portion that is provided on the gantry and holds the connection terminal portion when the connection terminal portion is moved out of the gantry.

From another point of view, an electronic device to which the present invention is applied is connected to an external device and transmits / receives a predetermined signal, and a connection terminal portion to which wiring of a signal transmitted / received by the electronic device is connected. , a storage portion for storing the connection terminal portion, is intended to include which has a mounting plate for mounting an electronic device, a frame having a holding portion for holding the housing unit. The holding unit of the gantry holds the housing portion so that it can be pulled out and removed from the gantry, and the connection terminal portion is attached to the outside of the gantry in a state where wiring of signals transmitted and received by the electronic device is connected to the connection terminal portion. The connection state at the connection terminal portion can be checked outside the gantry and at the same time. Note that the electronic device and an external device can be connected via a communication line.

The gantry has a frame structure composed of a plurality of rod-shaped members, the gantry holding portion is provided on the lower surface of the gantry mounting plate, and the housing portion has a cover member that covers a surface other than the upper surface. Can be a feature. In addition, the accommodating portion may have an opening on the upper surface that is accessible to the connection terminal portion accommodated in the accommodating portion.
Here, a part or all of the telemeter system can be configured together with an external device.

  According to the present invention, it is possible to improve workability regarding the connection terminal portion.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a schematic configuration diagram illustrating a configuration of an air pollution monitoring system including an electronic device according to the present embodiment.
As shown in the figure, the air pollution monitoring system has a measuring station (measuring device installation station, observation station, slave station) 10 provided at a plurality of locations and a central station (centralized monitoring station) as a monitoring center. , A master station) 20 and a transmission line 30 which is a communication line (wired line, wireless line) for connecting each of the measurement stations 10 and the central station 20 to each other. Each of the plurality of measurement stations 10 includes an automatic measurement device 11, a telemeter slave station device (communication data logger) 12, and a connection cable 13 connecting the two.

  In such an air pollution monitoring system, online real-time processing using a telemeter is introduced for data collection. For this reason, by utilizing processed and recorded data, it is possible to quickly grasp the pollution situation, deal with emergencies that affect human health, and to grasp a wide range of pollution situations. Exchange data with the public, etc., and inform the local residents of the air pollution status. Further, the operation status of the automatic measuring device 11 of the measuring station 10 can be centrally monitored to cope with a failure or the like.

  Here, the telemeter slave station device 12, the central station 20, and the transmission path 30 constitute a part of the data transmission system. The air pollution monitoring system also includes a data processing system (analysis system) (not shown), a data exchange system (not shown), and a simultaneous notification system (not shown). Briefly describing these, the data processing system includes an online data processing system that is a computer system for online / real-time processing of the signal of the automatic measuring apparatus 11 sent via the data transmission system, and a 1 hour value. And an offline data processing system for performing batch processing such as confirmation of data and data analysis. The data exchange system is for exchanging data with other monitoring centers. In addition, when it is determined that an emergency measure is necessary, the simultaneous notification system will provide information on the type of pollutant (photochemical oxidant, etc.), the area where the command was issued, the type of emergency measure (warning, etc.), and the time of issue or release. To notify the target factory, target office, and related organizations.

The central station 20 calls the measurement station 10 in accordance with a predetermined time interval and order, automatically receives data (scheduled call), and passes it to the data processing system. If there is an error in the transmitted data or the measurement station 10 does not respond, the central station 20 performs control such as recall and jump to the next measurement station 10. The central station 20 is configured such that, in addition to the scheduled call, an arbitrary call for calling an arbitrary measurement station 10 in an idle time other than the scheduled call is also possible, so that the accuracy of transmission data can be confirmed. It has become. Further, the clock of the online data processing system of the central office 20 and the clock of the measurement station 10 are configured to always coincide with the system clock built in the central office 20.
Thus, each of the plurality of measurement stations 10 and the central station 20 are regularly connected for control and data transmission / reception, and are also connected irregularly.

  The telemeter slave station device 12 has a function of receiving a measurement signal and a state monitoring signal from the automatic measurement device 11, processing and editing the signal into a designated format, and transmitting it to the central station 20. Further, the telemeter slave station device 12 has a function of transmitting a control signal to the automatic measuring device 11, and has a data backup function by a built-in memory (not shown).

2A and 2B are schematic configuration diagrams for explaining the configuration of the automatic measurement apparatus 11 installed in the measurement station 10, where FIG. 2A is a front view, FIG. 2B is a right side view, and FIG. It is a rear view.
As shown in the figure, the automatic measuring device 11 includes an air / exhaust gas analyzer (environmental air analyzer, electronic device) 40 having a housing structure for measuring, for example, nitrogen oxide, sulfur dioxide, ozone, etc. in the atmosphere. And a recorder 111 for printing and recording the analysis results obtained by the air / exhaust gas analyzer 40. The automatic measuring device 11 includes a measurement unit (sensor unit) and an electric control unit that are not shown. Examples of the electric control unit include an interface unit, a control unit, a signal processing unit, a calculation unit, and a storage unit.

  The automatic measuring apparatus 11 includes a gantry 50 on which the air / exhaust gas analyzer 40 and the recorder 111 are mounted, and a caster 112 with a stopper that is provided below the gantry 50 and allows the gantry 50 to move on the floor surface. And. The gantry 50 has an open frame structure composed of a plurality of frame members 51, and no covers are attached to prevent the inside from being seen. And the mounting board 52 is attached to the upper surface of the mount frame 50 so that an upper surface may be covered. The air / exhaust gas analyzer 40 is mounted on a mounting plate 52 of the gantry 50. The recorder 111 is installed on the frame member 51 so as to be visible from the front side of the gantry 50.

  The automatic measuring device 11 is located on the back side of the gantry 50 and is configured to be detachable from the back side of the gantry 50 and a power supply unit 113 for supplying power to the atmosphere / exhaust gas analyzer 40 and the recorder 111. External terminals having a plurality of terminals for transmitting measurement data and contact signals to the telemeter slave station device 12 (see FIG. 1) and receiving signals such as reset and automatic calibration start from the telemeter slave station device 12 Part (connection terminal part) 60. In other words, the power supply unit 113 is attached to the lower surface of the mounting plate 52.

Here, the external terminal portion 60 will be described.
FIG. 3 is a schematic configuration diagram showing a state in which the external terminal portion 60 is attached to the gantry 50, and is a view seen from the back side of the gantry 50.
As shown in the figure, the external terminal portion 60 is disposed in the box portion 61 and a box portion (accommodating portion) 61 that is open only at the top and is covered with a plate-like member (cover member). Terminal block 62, and a pair of flange portions 63a and 63b formed to protrude laterally from box portion 61. The terminal block 62 is electrically connected to an electric control unit (not shown) of the automatic measuring apparatus 11 by a cable (wire) (not shown). A pair of holding members 53a and 53b having a Z-shaped cross section configured to receive the pair of flange portions 63a and 63b of the external terminal portion 60 are fixed to the lower surface of the mounting plate 52 of the gantry 50. . Note that, as described above, only the upper surface of the external terminal portion 60 is configured to be opened, but it can also be said that the external terminal portion 60 has an opening on the upper surface.

  With such a configuration, the external terminal portion 60 can be attached to the mount 50 by engaging the pair of flange portions 63a and 63b of the external terminal portion 60 with the pair of holding members 53a and 53b, and the external terminal portion. The external terminal portion 60 can be easily separated from the gantry 50 by sliding the pair of flange portions 63a and 63b of the 60 in the direction perpendicular to the paper surface with respect to the pair of holding members 53a and 53b.

  A screw hole 64 is screwed into each of the pair of flange portions 63a and 63b of the external terminal portion 60. Each of the pair of holding members 53a and 53b of the gantry 50 is provided with a mounting hole 54 corresponding to the screw hole 64 of the pair of flange portions 63a and 63b. With such a configuration, after the pair of flange portions 63a and 63b of the external terminal portion 60 are engaged with the pair of holding members 53a and 53b, the screw member 55 is attached to the mounting holes 54 of the pair of holding members 53a and 53b and By engaging the screw holes 64 of the pair of flange portions 63 a and 63 b, the external terminal portion 60 can be fixed to the mount 50.

In addition, when the external terminal unit 60 is to be separated from the gantry 50, the user removes the screw member 55 that fixes the external terminal unit 60 to the gantry 50 and then moves the external terminal unit 60 to the rear of the gantry 50. Just pull it out (toward the front of the page). Then, when trying to fix the external terminal portion 60 to the gantry 50, the user faces the front side from the rear surface side of the gantry 50 so as to insert the external terminal portion 60 between the pair of holding members 53a and 53b. After sliding, the external terminal portion 60 is fixed to the pair of holding members 53 a and 53 b of the gantry 50 by the screw member 55.
As described above, when the external terminal portion 60 is attached to or detached from the mount 50, a very simple operation is sufficient. In addition, when a so-called knurled screw or knob screw having a structure in which the user can pinch the screw member 55 by hand is used as the screw member 55, the external terminal portion 60 can be attached and detached without using a special tool.

Here, as described above, the box portion 61 does not cover the entire periphery, and the upper portion is open. When the external terminal portion 60 is attached to the gantry 50, the upper portion of the box portion 61 is covered with the mounting plate 52. Although configured in this manner, the gantry 50 has an open frame structure, but the terminal block 62 disposed in the box portion 61 can be provided without separately providing a top plate for covering the upper portion of the box portion 61. It is possible to prevent dust and dust from accumulating on the surface, and to realize cost reduction by reducing the number of components.
Further, when the box unit 61 is removed from the gantry 50, the user can immediately access the terminal block 62 from above the box unit 61. For this reason, the workability | operativity by a user can be aimed at.

FIG. 4 is a schematic configuration diagram showing a state in which the external terminal portion 60 is attached to the gantry 50, and is a diagram partially showing the front side of the gantry 50 when viewed from the right side of the gantry 50.
As shown in the figure, the external terminal portion 60 has a protruding piece 65 on the back side of the box portion 61 (the front side of the gantry 50). An angle member 56 is attached to the lower surface of the mounting plate 52 of the gantry 50, and a detection unit 57 is held on the angle member 56. The detection portion 57 is for detecting the protruding piece 65 of the external terminal portion 60. The detection unit 57 can detect whether or not the external terminal unit 60 is in a predetermined position with respect to the gantry 50. The detection unit 57 can be configured by a well-known and common technique using a proximity switch, a photo switch, or the like.

  More specifically, when the user removes the external terminal unit 60 from the mount 50 for maintenance work or the like, and forgets to fix the external terminal unit 60 to the mount 50 even after the work is completed. May interfere with the normal operation of the air pollution monitoring system. Therefore, if the user forgets to return the external terminal unit 60 to the predetermined position, the detection unit 57 can detect the user forgetting to return. Therefore, when the detection unit 57 detects during normal operation, for example, by issuing a warning sound or a warning signal for alerting the user, it is possible to prevent problems caused by the user's carelessness.

Next, a case where the user removes the external terminal unit 60 from the gantry 50 and performs maintenance work or the like will be described.
5 and 6 are explanatory diagrams for explaining a situation when the user performs maintenance work or the like.
As shown in FIG. 5, the user P moves to the back side of the gantry 50, removes the screw member 55 (see FIG. 3) that fixes the external terminal portion 60 to the gantry 50, and then moves the external terminal portion 60 to the front. The external terminal portion 60 is separated from the gantry 50 by pulling it out. Then, the user P sits on a chair and places the external terminal unit 60 on the knee of the user P, or the external terminal unit 60 is placed on the upper surface (mounting unit) 40a of the atmospheric / exhaust gas analyzer 40 as shown in FIG. To perform maintenance work. For this reason, the user P does not need to perform a maintenance operation or the like in a state where the external terminal portion 60 is attached to the inside of the gantry 50, and the workability can be greatly improved.

In addition, the scene in which the user P removes the external terminal unit 60 from the gantry 50 is performed at the time of replacement of the atmosphere / exhaust gas analyzer 40 or at the start-up in addition to the maintenance. And since such work needs to check the operating state of the air / exhaust gas analyzer 40 and other equipment, the air / exhaust gas analyzer 40 is turned on, and the external terminal section It is necessary to perform the test in a state where signal lines (wiring) (not shown) are connected to the 60 terminal blocks 62. Therefore, a maintenance operation such as a check is performed in a state where the external terminal unit 60 is connected to the air / exhaust gas analyzer 40 and the like.
In addition, in this Embodiment, although the form which removes the external terminal part 60 from the back surface side of the automatic measuring device 11 was demonstrated, the structure removed from the front surface or a side surface is also employable. Of course, the present invention can be applied to the external terminal portion 60 of the telemeter slave station device 12 (see FIG. 1).

Next, a modification of the present embodiment will be described.
FIG. 7 is a schematic configuration diagram for explaining a modified example of the automatic measuring apparatus 71 according to the modified example.
As shown in the figure, in the case of an automatic measuring device 71 having a height of, for example, about 160 cm, the removed external terminal portion 60 is placed on the upper surface 40a of the atmospheric / exhaust gas analyzer 40 to perform maintenance work or the like. It is difficult to do. The modification shown in FIG. 7 is for dealing with such a situation. The external terminal 60 is provided with a holding hole 66, and the side surface 71a of the automatic measuring device 71 is provided with A hook portion (holding portion) 72 for temporarily hooking the removed external terminal portion 60 is attached. That is, the external terminal portion 60 can be held on the side surface 71a by being hooked on the hook portion 72 of the automatic measuring device 71 in the holding hole 66 of the removed external terminal portion 60. However, it is not necessary to hold the external terminal portion 60. For this reason, even if the upper surface 40a of the atmosphere / exhaust gas analyzer 40 is at a high position and the external terminal portion 60 is placed on the upper surface 40a and the work cannot be performed, it is possible to avoid a decrease in workability. .

  As described above, according to the present embodiment and the modified example, the external terminal portion 60 that requires maintenance work or the like can be easily separated from the automatic measuring devices 11 and 71, and can be placed on the user's knee or the atmosphere / exhaust gas. Since the work can be carried out by being placed on the upper surface 40a of the analyzer 40 or being hooked on the side surface 71a of the automatic measuring device 71, the user does not need to perform maintenance work in an unreasonable posture, and the workability is improved. Can be improved. Moreover, since it is not time-consuming to remove or attach the external terminal unit 60 from the automatic measuring apparatuses 11 and 71, it is possible to prevent the working time from becoming long.

It is a schematic block diagram which shows the structure of an air pollution monitoring system provided with the electronic device which concerns on this Embodiment. It is a schematic block diagram for demonstrating the structure of the automatic measuring apparatus installed in a measurement station. It is a schematic block diagram which shows the state in which the external terminal part is attached to the mount frame. It is a schematic block diagram which shows the state in which the external terminal part is attached to the mount frame. It is explanatory drawing for demonstrating the condition at the time of a user performing a maintenance operation | work etc. FIG. It is explanatory drawing for demonstrating the condition at the time of a user performing a maintenance operation | work etc. FIG. It is a schematic block diagram for demonstrating the modification of an automatic measuring apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Measuring station, 11, 71 ... Automatic measuring device, 20 ... Central station, 30 ... Transmission path, 40 ... Air / exhaust gas analyzer, 40a ... Upper surface, 50 ... Mount, 51 ... Frame member, 52 ... Mounting plate 53a, 53b ... holding member, 54 ... mounting hole, 55 ... screw member, 56 ... angle member, 57 ... detection part, 60 ... external terminal part, 61 ... box part, 62 ... terminal block, 63a, 63b ... flange part 64 ... Screw hole, 65 ... Projection piece, 66 ... Holding hole, 71a ... Side, 72 ... Hook

Claims (4)

An electronic device connected to an external device and transmitting / receiving a predetermined signal;
A connection terminal portion to which wiring of signals transmitted and received by the electronic device is connected;
An accommodating portion for accommodating the connection terminal portion;
Which has a mounting plate for mounting the electronic device, a frame having a holding portion for holding the accommodating portion,
The holding portion of the gantry holds the housing portion so as to be drawable and removable from the gantry,
The connection terminal portion can be moved out of the gantry while the wiring of signals transmitted and received by the electronic device is connected to the connection terminal portion, and the connection state in the connection terminal portion is checked outside the gantry. An electronic device characterized in that the electronic device can be used. The gantry is a frame structure composed of a plurality of rod-shaped members, and the holding portion of the gantry is provided on the lower surface of the mounting plate described above,
The electronic device according to claim 1 , wherein the housing portion includes a cover member that covers a surface other than the upper surface. The accommodating unit, the electronic device according to claim 1, characterized by having the connection terminal portion is housed in the housing portion accessible opening in the top surface. The electronic device according to claim 1 , wherein the electronic device forms part or all of a telemeter system together with the external device.

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