JP5093270B2 - Control equipment - Google Patents

Description

  The present invention relates to a control device, and particularly to a control device used as a temperature control device, a timer, or a counter.

  Techniques related to general control devices represented by temperature control devices and the like are disclosed in Japanese Patent Application Laid-Open No. 2002-329980 (Patent Document 1) and Japanese Patent Application Laid-Open No. 10-163641 (Patent Document 2).

  According to Patent Document 1, in the terminal cover structure of a panel mounting device, the outer dimensions of the terminal cover are the same as or smaller than the outer dimensions of the device body corresponding to the panel cut, so that the panel mounting device can be mounted on the control panel. Trying to make it easier. According to Patent Document 2, the terminal block mounting structure of the control device includes a terminal block mounting portion on the component mounting side of the first case, and a terminal block having terminal legs mounted on the terminal block mounting portion. The board unit is attached to the open side of the case and the board unit is connected to the terminal leg of the terminal block. By doing so, the generation of cracks in the soldering portion of the terminal block is prevented, and the cost of components is reduced.

JP 2002-329980 A Japanese Patent Laid-Open No. 10-163641

  With respect to conventional control devices represented by Patent Document 1 and the like, for example, various control devices are used according to applications and specifications. Specifically, depending on the application of the temperature control device, timer, counter, etc. as the control device, different ones with different arrangements of connecting terminals, etc., or those with different shapes of openings provided on the side of the case are used. It is done. Here, when various kinds of control devices are manufactured in accordance with applications, individual mold design or the like is required, and the manufacturing cost becomes very high.

  An object of the present invention is to provide a control device that can manufacture a plurality of different types at low cost.

  The control device according to the present invention has a rear case whose outer shape is a substantially quadrangular prism shape extending in the front-rear direction, a space provided on the inner side, and a circuit board accommodated in the inner space of the rear case And a front case including a display unit that is thin plate-shaped and arranged on the front side of the rear case and displays control information, and a plurality of connection terminals that are arranged on the rear side of the rear case and connect to external devices. Including a terminal block. The rear case and the terminal block have directionality with respect to the front case with a rotation axis extending in the front-rear direction as a rotation center. Here, the rear case can be attached to the front case by rotating a predetermined angle with respect to the front case as a rotation axis extending in the front-rear direction. Further, the terminal block can be attached to the rear case by rotating a predetermined angle with respect to the front case as a rotation center extending in the front-rear direction.

  The control device having such a configuration can be attached to the front case by rotating a rear case having a rotational direction with respect to the front case by a predetermined angle. In addition, a terminal block having a direction of rotation with respect to the front case can be rotated by a predetermined angle and attached to the rear case. Then, according to a request | requirement, a rear case and a terminal block can be rotated, each member can be attached, and a several different kind of control apparatus can be manufactured. That is, it is not necessary to separately manufacture various control devices according to the application. Therefore, a plurality of different types can be manufactured at low cost.

  The predetermined angles are both 90 degrees. With this configuration, for example, a rear case and a terminal block having different shapes in the vertical and horizontal directions can be appropriately attached.

  More preferably, when viewed from the front-rear direction, the outer shapes of the rear case and the terminal block are both substantially square. By doing so, the rear case and the terminal block can be rotated and attached more reliably.

  More preferably, the circuit board can be attached to the front case by rotating the circuit board by a predetermined angle about a rotation axis extending in the front-rear direction with respect to the front case. In this way, a plurality of different types of control devices can be manufactured.

  Here, the front case and the rear case may be configured to be provided with engaging portions that are attached to the front case by rotating the rear case. In addition, the rear case and the terminal block may each be provided with an engaging portion that is attached to the rear case by rotating the terminal block.

  More preferably, the first surface constituting the rear case and the second surface adjacent to the first surface are provided with openings, and the area of the opening of the first surface is equal to that of the second surface. It is larger than the area of the opening. The control device having such a configuration can arrange a surface having a large opening area in a direction in which better air permeability is required. Then, it is possible to manufacture a control device that meets the demand.

  As a further preferred embodiment, the terminal block has any one of a card edge type, a solder fixing type, and a pin type.

  According to such a control device, the rear case having the direction of rotation with respect to the front case can be attached to the front case by being rotated by a predetermined angle. In addition, a terminal block having a direction of rotation with respect to the front case can be rotated by a predetermined angle and attached to the rear case. Then, according to a request | requirement, a rear case and a terminal block can be rotated, each member can be attached, and a several different kind of control apparatus can be manufactured. That is, it is not necessary to separately manufacture various control devices according to the application. Therefore, a plurality of different types can be manufactured at low cost.

It is a block diagram which shows the schematic structure of the control apparatus which concerns on one Embodiment of this invention. It is a disassembled perspective view which decomposes | disassembles and shows the control apparatus which concerns on one Embodiment of this invention, and a terminal block is a card edge type thing. It is a perspective view of the rear case with which the control apparatus shown in FIG. 2 is equipped. It is a side view of the rear case with which the control apparatus shown in FIG. 2 is equipped. It is a perspective view which shows the state which assembled the control apparatus shown in FIG. FIG. 6 is a perspective view when the angles of the terminal block and the rear case are rotated by 90 degrees in the control device shown in FIG. 5. It is a perspective view of the control apparatus which concerns on other embodiment of this invention, and a terminal block is a thing of a solder fixation type. FIG. 8 is a perspective view when the angles of the terminal block and the rear case are rotated by 90 degrees in the control device shown in FIG. 7. It is a perspective view of the control apparatus which concerns on other embodiment of this invention, and a terminal block is a pin type thing.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a control device 11 according to an embodiment of the present invention.

  Referring to FIG. 1, a control device 11 according to an embodiment of the present invention is used when, for example, temperature control is performed on a temperature control object 12 such as a mechanical device. That is, the control device 11 is used as a temperature control device in this case. An example of temperature control in the control device 11 will be briefly described. First, the thermocouple 13 is attached to the temperature control object 12. The temperature of the temperature control object 12 is detected by the attached thermocouple 13. Then, temperature compensation is performed based on the temperature of the connection terminal using a temperature sensitive element and a circuit board described later. Finally, the temperature data after temperature compensation is displayed.

  The control device 11 uses, for example, PID (Proportional Integral Differential) control to turn on / off the power supplied to the heater 14 provided near the temperature control object 12 based on the measured temperature. A temperature adjustment mechanism that adjusts the temperature control object 12 within a set temperature range may be provided.

  The control device 11 includes a display unit 15 that displays the measured temperature, an operation unit 16 that includes a push button that inputs a set temperature, measurement conditions, and the like, a circuit board 17 that performs temperature compensation, and the circuit board 17. Power supply 18, connection terminal 19 connected via a conductor (not shown) to thermocouple 13 for detecting the temperature of temperature control object 12, contact for connecting connection terminal 19 and circuit board 17 to each other. And a temperature sensing element 21 that detects the temperature of the connection terminal 19. In the embodiment shown in FIG. 2 and the later described later, two circuit boards 17 are provided. A plurality of connection terminals 19 are also provided, and a plurality of terminal fittings 20 are also provided according to the number of connection terminals 19.

Next, a specific configuration of the control device 11 according to an embodiment of the present invention will be described. FIG. 2 is an exploded perspective view showing the control device 11 according to one embodiment of the present invention in an exploded manner. FIG. 3 is an external perspective view of a rear case provided in the control device 11 shown in FIG. 4 is a side view of a rear case provided in the control device 11 shown in FIG. 2, and shows a case seen from the direction of arrow IV in FIG. FIG. 5 is a perspective view showing a state in which the control device 11 shown in FIG. 2 is assembled. From the viewpoint of easy understanding, the left side in FIG. 2 is the front side, and the right side is the rear side. That is, the direction indicated by the arrow A ₁ in FIG. 2 to FIG. 5, the front side. Then, the direction of the direction or vice versa indicated by the arrow A ₁ is a front-rear direction. 2 to 5, the direction indicated by the arrow A ₂ or the opposite direction thereof is the up-down direction, and the direction indicated by the arrow A ₃ in FIGS. 2, 3, or 5 or the opposite direction is the left-right direction. To do. The upper side in FIG. 2 is the upper direction, and the right side in FIG. 2 is the right direction.

  With reference to FIGS. 1-5, the control apparatus 11 which concerns on one Embodiment of this invention is substantially square pillar shape. In this embodiment, the shape extends in the front-rear direction. The control device 11 includes a front case 22, circuit boards 17 a, 17 b, 31, a rear case 23 that accommodates the circuit boards 17 a, 17 b, 31, a terminal block 24 to which a plurality of connection terminals 19 and a plurality of terminal fittings 20 are attached. With. In addition, in FIG. 2, illustration of the connecting terminal 19 and the terminal metal fitting 20 is abbreviate | omitted.

  The front case 22 has a thin plate shape. Further, when viewed from the front-rear direction, the outer shape of the front case 22 is a substantially square shape. The display unit 15 is disposed in a region above the surface 25 that is the front side of the front case 22, and the operation unit 16 is disposed in a region below the surface 25 that is the front side of the front case 22. The display unit 15 displays control information such as the measured temperature in a digital display. The operation unit 16 is provided with a plurality of push buttons for inputting information such as setting values to be adjusted.

  The two circuit boards 17 a and 17 b are arranged in parallel along the front-rear direction and are accommodated on the inner side of the rear case 23. The circuit boards 17a and 17b are attached to the circuit board 31 with a space therebetween. The circuit board 31 has a thin plate shape and is arranged in parallel with the front case 22. The circuit board 17 a is fixed so that the side portion located on the front side is attached to the back surface 32 of the circuit board 31. Similarly, the circuit board 17b is fixed to the circuit board 31. When viewed from the front-rear direction, the outer shape of the circuit board 31 is also substantially square.

  Each of the circuit boards 17a and 17b is a card edge type, and is gold-plated at the contact portion 33 with the terminal fitting 20 disposed in the outer side region on the rear side of each of the circuit boards 17a and 17b. . When the control device 11 is assembled, the contact portion 33 that is plated with gold comes into contact with the terminal fitting 20 that is attached to the terminal block 24.

  The rear case 23 has a substantially quadrangular prism shape whose outer shape extends in the front-rear direction. The rear case 23 has a structure in which a space is provided on the inner side. Specifically, the rear case 23 has a cylindrical shape in which the sides of four plate-like members are bonded to each other. That is, the rear case 23 has openings in the front-rear direction. And it is the structure which accommodates the circuit boards 17a, 17b, and 31 in the cylindrical inner space.

Further, when viewed from the front-rear direction, the outer shape of the rear case 23 is a substantially square shape. In this embodiment, the lateral direction of the length L ₁ of the rear case 23 shown in FIG. 3, the vertical length L ₂ of the rear case 23 shown in FIG. 3, is configured equally.

  The rear case 23 is provided with a plurality of air holes 37 penetrating from the outer side to the inner side on the four surfaces 36a, 36b, 36c, and 36d constituting the outer shape. There are various opening shapes of the air holes 37, but the majority are rectangular and are provided so as to extend in the left-right direction or the up-down direction. With the plurality of vent holes 37 provided in the rear case 23, the heat generated in the circuit boards 17a, 17b and the like in the control device 11 is released to the outside, and the air permeability in the control device 11 is improved.

  Here, in the four surfaces 36a to 36d, the plurality of air holes 37 provided in the respective surfaces 36a to 36d are configured to be different from each other. Specifically, for example, in FIG. 3, the surfaces 36a and 36c as the first surfaces positioned in the vertical direction are configured with a relatively large number of air holes 37. In FIG. The surfaces 36b and 36d as the second surfaces located and adjacent to the first surface are configured with a relatively small number of air holes 37. In the rear case 23 having such a configuration, the air permeability in the vertical direction is better than the air permeability in the left and right direction.

  Further, on the surfaces 36a to 36d, through holes 38 other than the air holes 37 are also provided. Such a through hole 38 is provided for improving visibility for visually recognizing part of the circuit boards 17a and 17b from the outside. The shape of the through hole 38 provided in each of the surfaces 36a to 36d is also different. That is, on the surfaces 36a to 36d, the shapes formed by the vent holes 37 and the through holes 38 are greatly different.

  The area of the surfaces 36b and 36d excluding the opening is larger than the area of the surfaces 36a and 36c excluding the opening. In the rear case 23 having such a configuration, the surfaces 36b and 36d arranged in the left-right direction have a relatively larger area than the surfaces 36a and 36c arranged in the vertical direction. In order to display characteristics and the like, the surfaces 36b and 36d arranged in the left-right direction can be effectively used. In particular, a display according to the standard of IEC (International Electrotechnical Commission) requires a certain area. Therefore, for example, a relatively wide area 39a, 39b that avoids the opening portion indicated by the dotted line in FIG. 3 in the surface 36b can be effectively used for attaching a display sticker or the like.

  Further, the rear case 23 can be attached so as to fit the front case 22 and the rear case 23 using elastic deformation of the front side portion.

  The rear case 23 is provided with four rear engaging holes 42 as engaging portions for attaching the terminal block 24. About the rear side engagement hole 42, it is provided so that it may be located in the center of each side part which comprises the opening of the rear side in the rear case 23 among each surface 36a-36d. That is, the rear case 23 is provided with a total of four rear engagement holes 42.

  The terminal block 24 has a configuration in which a plurality of connection terminals 19 and a plurality of terminal fittings 20 for connecting the connection terminals 19 and a part of the circuit boards 17a and 17b can be arranged in the vertical direction. The connection terminals 19 and the terminal fittings 20 are arranged in five rows in the vertical direction and in two rows in the horizontal direction.

Further, when viewed from the front-rear direction, the outer shape of the terminal block 24 is a substantially square shape. In this embodiment, the lateral direction of the length L ₃ of the terminal block 24 shown in FIG. 2, the vertical length L ₄ of the terminal block 24 shown in FIG. 2, is constructed equally. The lengths L ₃ and L ₄ are configured to be slightly shorter than the lengths L ₁ and L ₂ .

  The terminal block 24 is provided with a rear engagement claw 43 that is engaged when the rear case 23 is attached. The rear engaging claw 43 has a shape that protrudes rearward from the vertical central region of the side located in the left-right direction of the terminal block 24 and further protrudes outward. That is, the terminal block 24 is provided with a total of two rear engagement claws 43 at positions opposed to each other by 180 degrees. By utilizing the elastic deformation of the rear engagement claw 43 provided on the terminal block 24, the rear case 23 and the terminal block 24 are engaged by engaging the rear engagement hole 42 and the rear engagement claw 43. Can be attached so as to be fitted.

  Here, the rear case 23 can be attached to the front case 22 by rotating 90 degrees with respect to the front case 22 about a virtual rotation shaft 44 extending in the front-rear direction indicated by a one-dot chain line in FIG. It is. Further, the terminal block 24 is configured to be attached to the rear case 23 by being rotated 90 degrees with respect to the front case 22 about a virtual rotation shaft 44 extending in the front-rear direction. The rotation axis 44 is a virtual axis that passes through the center of the surface 25 of the front case 22.

  By configuring in this way, a plurality of different types of control devices 11 can be manufactured by rotating the rear case 23 and the terminal block 24 and attaching each member as required. That is, it is not necessary to separately manufacture various control devices 11 according to the application. Therefore, a plurality of different types can be manufactured at low cost.

  This will be specifically described as follows. That is, when the control device 11 is used as a temperature control device, the terminal block 24 has five connection terminals in the vertical direction as shown in FIG. 2 rather than five in the horizontal direction and two rows in the vertical direction. In addition, it is preferable that two rows are arranged in the left-right direction. For example, a thermocouple is connected to the lowermost connection terminal arranged on the right side, and the temperature of the connection terminal is detected by a temperature sensing element provided on the circuit board 17a arranged on the right side. The power supply is provided on the circuit board 17b arranged on the left side. Further, in the rear case 23, the surfaces 36a and 36c provided with a large number of ventilation holes 37 are arranged in the vertical direction, and the surfaces 36b and 36d are arranged in the left and right directions, so that the ventilation in the vertical direction is good. can do. By so doing, heat from the power source that is easily transmitted upward can be efficiently discharged to the outside of the control device 11. In such a configuration, when the temperature of the connection terminal is detected by the temperature sensing element, the power source and the temperature sensing element can be separated as much as possible, and the power source easily transmitted upward with respect to the temperature sensing element. It is because the influence of the heat from can be reduced.

  On the other hand, when the control device 11 is used as a counter, a temperature sensing element is not necessary, and the terminal block 24 has five connection terminals in the left-right direction and two in the vertical direction because of the arrangement of the connection terminals connected to the external device. In many cases, it is preferable to arrange in a row. Further, from the viewpoint of improving the visibility of display by the IEC described above, it is preferable that the surface 36b or the surface 36d is arranged in the upward direction. Thus, even when used as a counter, the control device having the configuration shown in FIG. 6 can be easily manufactured by attaching the rear case 23 and the terminal block 24 to the front case 22 by rotating them 90 degrees. it can. That is, the control device having the configuration shown in FIG. 5 and the control device having the configuration shown in FIG. 6 can be manufactured using the same member.

  In this case, the circuit board can also be attached to the front case 22 by rotating it at a predetermined angle around the rotation shaft 44 extending in the front-rear direction with respect to the front case 22, and thus a plurality of different types of control devices can be installed. Can be manufactured.

  In the above embodiment, the configuration of the terminal block 24 is a card edge type. However, the configuration is not limited to this, and a solder fixing type or a pin type can also be applied. That is, the terminal block may be configured to be one of a card edge type, a solder fixing type, and a pin type.

  7 and 8 are perspective views of a control device according to another embodiment of the present invention, in which the terminal block is of a solder fixing type. FIG. 7 is a perspective view showing an example of the control device 45 when the rear case 46 having the direction of rotation and the solder-fixed type terminal block 47 are attached. FIG. 8 is a perspective view of the control device 45 shown in FIG. 7 when the angles of the terminal block 47 and the rear case 46 are rotated by 90 degrees. FIG. 9 is a perspective view of a control device 48 according to still another embodiment of the present invention, and the terminal block 49 is of a pin type. This type of terminal block is also applicable.

  In the above embodiment, for the rear case, prepare a plurality of rear cases having different lengths in the front-rear direction, and if necessary, select a rear case having an appropriate length. Control equipment may be manufactured. By doing so, it is possible to manufacture a plurality of different types of control devices as required. In addition, prepare a number of holes with different hole shapes and sizes, number of holes, multiple holes, etc., and use the appropriate rear case shape according to the application to manufacture control equipment. You may decide to do it.

  In the above-described embodiment, a configuration that can be attached by rotating 90 degrees is not limited to 90 degrees. For example, a configuration that can be attached by rotating 180 degrees may be used. It is good also as a structure which can be attached.

  In the above-described embodiment, the circuit board is also configured to be attached by being rotated by a predetermined angle. However, the present invention is not limited to this, and the circuit board and the front case may be fixed.

  In the above-described embodiment, the engaging portions provided in the front case, the rear case, and the terminal block only have to be able to engage with each other, and the engaging claws and the engaging holes are provided in reverse. May be. That is, an engagement claw may be provided on the rear case side, and an engagement hole may be provided on the front case or terminal block side. Furthermore, although it provided in the center of a side part, as long as it is the structure which can be rotated and attached, it is good also as providing in the position which deviated to the corner | angular of one side.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The control apparatus according to the present invention is effectively used when there are various uses and uses.

  11, 45, 48 Control device, 12 Temperature control object, 13 Thermocouple, 14 Heater, 15 Display unit, 16 Operation unit, 17, 17a, 17b, 31 Circuit board, 18 Power supply, 19 Connection terminal, 20 Terminal fitting, 21 temperature sensor, 22 front case, 23, 46 rear case, 24, 47, 49 terminal block, 25, 32, 36a, 36b, 36c, 36d surface, 33 contact portion, 37 vent hole, 38 through hole, 39a, 39b area | region, 42 back side engaging hole, 43 back side engaging claw, 44 rotating shaft.

Claims (8)

A rear case whose outer shape is a substantially quadrangular prism shape extending in the front-rear direction, and a space is provided on the inner side;
A circuit board accommodated in a space on the inner side of the rear case;
A front case that is thin and is disposed on the front side of the rear case and includes a display unit that displays control information;
A terminal block that is arranged on the rear side of the rear case and includes a plurality of connection terminals for connection with an external device;
When viewed from the front-rear direction, the outer shape of the rear case and the terminal block are both substantially square,
The rear case and the terminal block have directivity with respect to the front case with a rotation axis extending in the front-rear direction as a rotation center,
The rear case can be attached to the front case by rotating by 90 degrees about a rotation axis extending in the front-rear direction with respect to the front case.
The terminal block, to the rear case, Ri can der attached to the rear case is rotated 90 degrees rotation about a rotation axis extending in the longitudinal direction,
The circuit board can be attached to the front case by rotating 90 degrees about a rotation axis extending in the front-rear direction with respect to the front case,
The front case and the rear case are each provided with an engaging portion that rotates and attaches the rear case to the front case.
A control device in which the rear case and the terminal block are each provided with a rear engagement portion that rotates and attaches the terminal block to the rear case . The rear side engaging portion includes an engaging claw that is provided on the terminal block and protrudes outward, and an engaging hole that is provided on the rear case and engages with the engaging claw . The control device according to claim 1. Two engaging claws are provided at positions opposed to each other by 180 degrees,
The control device according to claim 2 , wherein the engagement holes are respectively provided on four surfaces constituting the rear case . The control device according to claim 1, wherein the rear case is attached so as to be fitted to the front case by using elastic deformation of a front portion . The control device according to any one of claims 1 to 4 , wherein an outer shape of the front case is a substantially square shape when viewed from the front-rear direction . The control device according to claim 1, wherein a plurality of connection terminals provided in one direction are provided in a double row on the terminal block . An opening is provided in the first surface constituting the rear case and the second surface adjacent to the first surface,
The control device according to claim 1, wherein an area of the opening on the first surface is larger than an area of the opening on the second surface. The control device according to claim 1, wherein a configuration of the terminal block is any one of a card edge type, a solder fixing type, and a pin type.

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