JP2013128039A - Circuit arrangement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circuit arrangement which does not require that a terminal pin is bent in advance.SOLUTION: The circuit arrangement includes a planar printed wiring board 3, and two heat ray sensors 1, being a circuit component, containing a body part 11 and a terminal pin 12 protruding from the body part 11, with the terminal pin 12 used to be inserted and mounted on the printed wiring board 3. Further a support body 4 is provided which is fixed to the printed wiring board 3 and supports the body part 11 in such a manner as the protrusion direction of the terminal pin 12 from the body part 11 has a predetermined angle relative to the thickness direction of the printed wiring board 3. A pin insertion hole 35 of the printed wiring board 3 into which the terminal pin 12 is inserted is an oblong hole along lateral direction, being the direction in which the heat ray sensor 1 is tilted such that the terminal pin 12 can be inserted without bending.

Description

  The present invention relates to a circuit device.

  2. Description of the Related Art Conventionally, there has been provided a circuit device in which a circuit component having a main body and a terminal pin protruding from the main body is inserted and mounted on a printed wiring board in a state where the main body is inclined (for example, Patent Document 1 and Patent Document 2).

  As an insertion mounting type circuit component as described above, a light emitting diode having a main body that emits light mainly in a direction opposite to the protruding direction of the terminal pin, or an incident mainly from the direction opposite to the protruding direction of the terminal pin. There is a heat ray sensor that generates an output corresponding to the amount of infrared rays.

  By tilting the main body as described above, the light emission direction can be changed and the detection range can be adjusted.

Japanese Utility Model Publication No. 61-144440 JP 2006-324437 A

  Conventionally, the pin insertion hole through which the terminal pin is inserted in the printed wiring board has a circular shape that is slightly larger than the cross-sectional shape of the terminal pin, and the inclined terminal pin cannot be inserted. It was. For this reason, in order to achieve the inclination as described above, prior to mounting on the printed wiring board, only the tip portion inserted into the pin insertion hole in the terminal pin is made upright with respect to the printed wiring board. The pin had to be bent in advance.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a circuit device in which it is not necessary to bend terminal pins in advance.

The circuit device of the present invention includes a flat printed wiring board,
A circuit component having a main body portion and a terminal pin projecting from the main body portion, and mounted on the printed wiring board by a pin insertion method at the terminal pin; and fixed to the printed wiring board and the main body portion And a support that supports the main body so that a protruding direction of the terminal pin from the printed wiring board forms a predetermined angle with respect to a thickness direction of the printed wiring board, and the terminal pin is inserted into the printed wiring board. The pin insertion hole is a long hole extending in a direction in which the protruding direction of the terminal pin is inclined with respect to the thickness direction of the printed wiring board so that the terminal pin can be inserted without bending. Features.

  In the above circuit device, the circuit component has three terminal pins provided in a triangular vertex arrangement, and the pin insertion hole has a triangular vertex arrangement in accordance with the terminal pin arrangement. It is desirable to be provided.

  In the above circuit device, it is preferable that at least one of the support and the printed wiring board and the main body have an uneven shape that engages with each other.

  Furthermore, the circuit device preferably includes a plurality of the circuit components and the support that supports the main body portions of the plurality of circuit components.

  In the above circuit device, a heat ray sensor may be provided as the circuit component.

  According to the present invention, since the pin insertion hole into which the terminal pin is inserted in the printed wiring board has a sufficiently sized shape, it is not necessary to bend the terminal pin in advance.

It is sectional drawing which shows the principal part of embodiment of this invention. It is a disassembled perspective view which shows the same as the above. It is a perspective view which shows the rear surface side of the principal part same as the above. It is a disassembled perspective view which shows the principal part same as the above. It is a perspective view which shows the front side of the principal part same as the above. It is a perspective view which shows the state in which the plug was connected in the rear surface side of the principal part same as the above. It is a perspective view which shows the front side of the principal part same as the above. It is a front view which shows a support body same as the above. It is a front view which shows a printed wiring board same as the above.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 and 2, the circuit device according to the present embodiment includes two heat ray sensors 1 as insertion-mounted circuit components that are mounted by a pin insertion method. Hereinafter, the upper, lower, left and right directions are based on FIG. 2, and the lower left-upper right direction in FIG. 2 (the vertical direction in FIG. 1) is referred to as the front-rear direction. Note that the above direction is defined for convenience of explanation, and does not necessarily match the direction in the actual use state.

  The present embodiment includes a body 2 having a housing recess 20 opened on the front surface, a printed wiring board 3 in which each heat ray sensor 1 is mounted and housed and held in the housing recess 20 with the thickness direction directed in the front-rear direction, A support body 4 interposed between the wiring board 3 and each heat ray sensor 1 is provided. The support 4 includes a flat main body 41 with the thickness direction facing the front-rear direction, and a semi-disc-shaped ridge that protrudes forward from both upper and lower ends of the main body 41 and has the thickness direction facing the vertical direction. Part 42. Further, at both left and right end portions of the rear surface of the main body portion 41, coupling convex portions 43 whose front end portions are bent in a hook shape outward in the left-right direction are projected rearward. At both left and right ends of the printed wiring board 3, coupling holes 31 are provided in the front-rear direction, and the support 4 is attached to the printed wiring board 3 by engaging the coupling projections 43 with the coupling holes 31. Join. Further, as shown in FIG. 3, two positioning projections 44 are arranged vertically on the right end portion of the main body portion 41 of the support body 4 so as to protrude rearward, and two pieces are provided on the right end portion of the printed wiring board 3. Positioning cutouts 32 are provided side by side. The positioning of the support 4 with respect to the printed wiring board 3 is also achieved by engaging the positioning protrusions 44 with the positioning notches 32.

  Further, an insertion mounting type light emitting diode 51 is mounted on the front surface of the printed wiring board 3, and two insertions of the terminal pins of the light emitting diode 51 are respectively inserted into the printed wiring board 3 and the support body 4. Holes 33 and 45 are provided. Furthermore, the printed wiring board 3 includes, for example, a notification circuit (not shown) that performs a predetermined notification operation when a human body is detected by any one of the heat ray sensors 1, and a receptacle 52 that is used for input and output of power and signals. (See FIGS. 3 and 6). As shown in FIG. 6, the receptacle 52 constitutes a known connector together with a plug 54 provided at one end of the cable 53 and inserted and connected to the receptacle 52. As said alerting | reporting operation | movement, what turns on the light emitting diode 51 and outputs a predetermined electrical signal to the exterior via said connector and the cable 53 can be considered, for example.

  Further, a light-transmitting sheet 6 made of a material that allows infrared rays to pass through and covering the front side of each heat ray sensor 1 is attached to the support 4. The left end portion of the translucent sheet 6 is pivotally attached to the left end portion of the support 4. In addition, two engagement holes 61 are provided in the right end portion of the translucent sheet 6 so as to be vertically arranged, and two engagement convex portions 46 are provided so as to protrude vertically on the right side surface of the support 4. The translucent sheet 6 is held in a semi-cylindrical shape along the front end of the flange 42 on the front side of the support 4 as shown in FIG.

  Furthermore, the present embodiment includes a frame-like cover 7 that is coupled to the front side of the body 2 in such a manner that the edges of the printed wiring board 3, the support 4, and the translucent sheet 6 are sandwiched between the body 2. U-shaped coupling protrusions 71 project rearward from the upper and lower ends of the cover 7, and U-shaped coupling recesses 21 are provided on the upper and lower surfaces of the body 2, respectively. The cover 7 is coupled to the body 2 by engaging with the coupling recess 21. Engagement / disengagement of the coupling convex portion 71 with respect to the coupling concave portion 21 is achieved by temporary elastic deformation of the coupling convex portion 71.

  Further, a limiting cover 8 made of a material that does not allow infrared light to pass therethrough and provided with an appropriately shaped slit 80 can be attached between the translucent sheet 6 and the cover 7. That is, attaching the limiting cover 8 can prevent a human body in an unintended direction from being detected.

  Hereinafter, the mounting structure of the heat ray sensor 1, which is the main point of the present embodiment, will be described.

  As shown in FIG. 1, the heat ray sensor 1 is composed of a main body portion 11 and three wires each made of a conductive material and linearly projecting from the main body portion 11 in parallel with each other and used for insertion mounting on a printed wiring board 3. Terminal pins 12. That is, each terminal pin 12 is inserted into a pin insertion hole 35 provided in the printed wiring board 3 from the front side, and a conductive pattern provided in the printed wiring board 3 on the rear side of the printed wiring board 3. Soldered (not shown). In FIG. 1, components other than the heat ray sensor 1 among components mounted on the printed wiring board 3 are not shown. The three terminal pins 12 are provided in a triangular apex arrangement when viewed from the length direction (projection direction from the main body 11). Furthermore, the main body 11 is formed in a cylindrical shape as a whole, and holds a pyroelectric sensor 10 on one bottom surface, and a sensor base 13 in which each terminal pin 12 protrudes from the other bottom surface, and a material that transmits infrared rays. And a sensor cover 14 attached to the sensor base 13 so as to cover the pyroelectric sensor 10. The sensor cover 14 covers the outer peripheral surface of the sensor base 13, and the lower end portion of the sensor cover 13 protrudes in the axial direction of the sensor base 13. As a result, the bottom surface of the heat ray sensor 1 is formed with a recess 15 having a bottom surface formed of the sensor base 13 and an inner peripheral surface formed of the sensor cover 14, and each terminal pin 12 protrudes from the bottom surface of the recess 15. ing. The heat ray sensor 1 described above mainly detects infrared rays that are incident on the center axis of the sensor base 13 from the direction opposite to the protruding direction of the terminal pins 12. In other words, the detection range of the heat ray sensor 1 is distributed around the central axis of the sensor base 13 in the direction opposite to the protruding direction of the terminal pins 12.

  Here, the above-mentioned heat ray sensor 1 is usually in a direction to stand upright with respect to the printed wiring board 3 (that is, the protruding direction of each terminal pin 12 from the main body 11 with respect to the thickness direction of the printed wiring board 3). Implemented as parallel). In this case, since the detection range of the heat ray sensor 1 is formed in the thickness direction of the printed wiring board 3, a wide detection range will be realized as a whole by using a plurality of heat ray sensors 1 having different directions. In this case, the same number of printed wiring boards 3 as the number of heat ray sensors 1 are required.

  On the other hand, in the present embodiment, each heat ray sensor 1 is mounted so as to be tilted to the left or right with respect to the printed wiring board 3, so that a wide detection range can be obtained on the left and right with one printed wiring board 3. Realized.

  In addition, the inclination of each heat ray sensor 1 with respect to the printed wiring board 3 is maintained by the support 4. Specifically, the main body 41 of the support body 4 has a one-to-one correspondence with an inclined portion 47 whose upper surface is inclined by a predetermined angle (for example, 35 °) with respect to the lower surface as shown in FIG. Have two. That is, each heat ray sensor 1 has an inclination with respect to the printed wiring board 3 by the lower end surface of the main body 1 (sensor cover 14) contacting the inclined portion 47 (that is, supported by the support body 4). It is maintained at a predetermined angle. On the right side of each inclined portion 47, a body portion insertion hole 48 through which a part of the body portion 12 of the heat ray sensor 1 is inserted is provided. Further, each inclined portion 47 is provided with a pin insertion hole 471 that is a through hole penetrating in the front-rear direction and one on each of the upper and lower sides of the pin insertion hole 471 and opens in the front-rear direction and communicates with the body portion insertion hole 48. The pin insertion notch 472 is provided. One terminal pin 12 is inserted through each of the pin insertion hole 471 and each pin insertion notch 472.

  Furthermore, as shown in FIG. 9, the printed wiring board 3 is provided with two main body portion insertion holes 34 respectively communicating with the main body portion insertion holes 48 of the support 4. In addition, on the side of each body portion insertion hole 34, a pin insertion hole 35 through which one terminal pin 12 is inserted and communicates with either the pin insertion insertion 471 or the pin insertion notch 472 of the support. There are three each. Furthermore, the printed wiring board 3 is provided with a convex portion 36 that protrudes into the main body portion insertion hole 42 and engages with the concave portion 15 of the main body portion 11 of the heat ray sensor 1. That is, the position of the heat ray sensor 1 with respect to the printed wiring board 3 is stabilized by the concave and convex engagement between the concave portion 15 of the heat ray sensor 1 and the convex portion 36 of the printed wiring board 3. As described above, a portion that engages with the main body 11 of the heat ray sensor 1 may be provided on the support 4.

  Here, each pin insertion hole 35 is a long hole that is long in the left-right direction, which is the direction in which each heat ray sensor 1 is inclined with respect to the printed wiring board 3. Thereby, since the terminal pin 12 can be inserted into the pin insertion hole 35 without being bent, the mounting work of each heat ray sensor 1 on the printed wiring board 3 becomes easier as compared with the case where the terminal pin 12 needs to be bent. Yes.

  Further, the arrangement of the pin insertion holes 35 is a triangular apex arrangement in accordance with the arrangement of the terminal pins 12. The width (dimension in the vertical direction) of each pin insertion hole 35 is substantially the same as the width of the terminal pin 12, and the length (dimension in the left-right direction) of each pin insertion hole 35 is the terminal pin 12. As long as it can be inserted without bending, it is as short as possible. Thereby, the wobbling of the terminal pin 12 is difficult to occur.

  Furthermore, since one support body 4 supports two heat ray sensors 1, the number of parts is reduced as compared with the case where one support body 4 is provided for each heat ray sensor 1, and the heat ray sensor is also provided. It is easy to make the positional relationship between 1 constant.

  Note that the circuit component is not limited to the heat ray sensor 1 as described above as long as it is an insertion mounting type, and the present invention can be applied to a light emitting diode, for example.

1 Heat ray sensor (circuit parts)
3 Printed Wiring Board 4 Support 11 Main Body 12 Terminal Pin 15 Concave (Concavity and convexity engaging each other)
35 Pin insertion hole 36 Convex part (concavo-convex shape engaging each other)

Claims (5)

A flat printed wiring board;
A circuit component that has a main body portion and a terminal pin protruding from the main body portion and is mounted on the printed wiring board by the pin insertion method in the terminal pin;
A support that is fixed to the printed wiring board and supports the main body so that a protruding direction of the terminal pin from the main body forms a predetermined angle with respect to a thickness direction of the printed wiring board; With
The pin insertion hole into which the terminal pin is inserted in the printed wiring board is inclined with respect to the thickness direction of the printed wiring board so that the terminal pin can be inserted without bending the terminal pin. A circuit device characterized by being a long hole in a direction. The circuit component has three terminal pins provided in a triangular vertex arrangement,
The circuit device according to claim 1, wherein the pin insertion holes are provided in a triangular apex according to the arrangement of the terminal pins.   3. The circuit device according to claim 1, wherein at least one of the support and the printed wiring board and the main body have an uneven shape that engages with each other.   4. The circuit device according to claim 1, further comprising: a plurality of circuit components; and the support that supports the main body portions of the plurality of circuit components. 5.   The circuit device according to claim 1, further comprising a heat ray sensor as the circuit component.

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