JP4062215B2 - Automatic switch with rainproof heat ray sensor - Google Patents

Description

  The present invention relates to an automatic switch with a rain-proof hot-wire sensor, which is mainly attached to the outer wall of a building as a surface to be constructed.

  Conventionally, an automatic switch with a heat ray sensor that has a switch element inserted between a power source and a load, and that can open and close the switch element in response to human detection by a heat ray sensor that receives heat rays emitted from a human body. Is provided. Some automatic switches with a heat ray sensor of this type can be attached with the outer wall of the building as the surface to be constructed in order to use the light attached to the building to light up when a person approaches the building (for example, patents) Reference 1).

The structure described in Patent Document 1 has a structure in which a part is embedded in a construction target, and as shown in FIG. 9, the body 100 is coupled to the rear surface side of the inner cover 101 exposed on the construction target surface. The rear portion of the body 100 is configured to be embedded in the construction target. The front surface of the inner cover 101 is covered with an outer cover 102, and projecting bases 103 and 104 are provided on the front surfaces of the inner cover 101 and the outer cover 102, respectively. Exposure windows 103a and 104a are opened below the protrusions 103 and 104, and the light receiving lens 106 provided on the spherical movable block 105 is exposed from the exposure windows 103a and 104a. The movable block 105 is provided with a heat ray sensor 107 that receives heat rays through the light receiving lens 106. The movable block 105 is held on the inner cover 101 so as to be able to swing, and the swing range of the movable block 105 is, for example, the center line of the light receiving lens 106 tilted by 48 degrees with respect to the vertical downward direction in the current product. It is designed to be about 17.5 degrees in all directions with the position to be used as a reference position.
Japanese Patent Laid-Open No. 4-55728

  By the way, in the automatic switch with a heat ray sensor having the above-described configuration, when the rainwater or the like enters the gap between the inner cover 101 and the outer cover 102, the adjustment operation unit 108 that is exposed and provided on the front surface of the inner cover 101, etc. In order to prevent water from adhering to the inner cover 101, a draining rib 109 is provided on the peripheral portion of the front surface of the inner cover 101, and an operation unit 108 or 104 is provided in a portion surrounded by the draining rib 109. Providing such a draining rib 109 has an effect of suppressing the flooding of the operation unit 108 and the adhesion of water to the protruding platform 7, but the draining rib 109 only protrudes forward from the front surface of the inner cover 101. Therefore, when there is a large amount of infiltrated water, the water easily gets over the draining rib 109, so that there is a possibility that the operation unit 108 may be infiltrated or water may adhere to the front surface of the projecting base 104.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide an automatic switch with a rain-proof hot-wire sensor that is more waterproof than the conventional configuration.

  The invention according to claim 1 includes a switch element inserted between a power source and a load and a heat ray sensor that receives a heat ray radiated from a human body, so that the switch element can be opened and closed according to human detection by the heat ray sensor. A block and a light receiving lens that projects a rectangular parallelepiped protrusion inside the outer periphery of the base on the front surface of the base that is exposed on the surface of the work, and makes the heat ray incident on the heat ray sensor. A body that houses the sensor block in the stand in a form exposed from the lower surface of the base, a back cover that is disposed on the rear side of the body so as to surround the sensor block storage space together with the stand, and both sides of the stand A front cover that covers the upper surface and the front surface and that can be attached to and detached from the body is provided, and water that enters from the gap between the base and the front cover is guided to the side of the projecting table on the upper surface of the projecting table. The water return ribs are left and right Characterized in that it is formed over the entire length of the direction.

  According to this configuration, the front of the body is covered with the front cover, and the front of the body is not normally exposed to the outside, so a beautiful appearance can be obtained even if various operation parts and nameplates are provided on the front of the body. Can do. Here, rainwater or the like may enter the gap formed between the body and the front cover, but the body is provided with a protrusion and a water return rib is formed on the upper surface of the protrusion. Water does not flow to the front side of the table, and the water flows on the side surface of the platform and is discharged to the outside of the front cover. That is, even when various members such as various operation parts and nameplates are provided on the front surface of the body, water can be prevented from adhering to these members, and an opening that communicates with the inside of the stand is provided on the front surface of the body. Even in such a case, the front of the body does not get wet with water, so that it is possible to prevent water from entering the sensor block.

  According to a second aspect of the present invention, in the first aspect of the present invention, the spherical movable block integrally including the heat ray sensor and the light receiving lens, and the exposure block formed on the lower surface of the projecting base, wherein the movable block is swingably held. A lens holding frame fixed to a fixed position with respect to the body is added so that the light receiving lens is exposed to the window.

  According to this configuration, since the movable block including the heat ray sensor and the light receiving lens is swingably held by the lens holding frame fixed at a fixed position with respect to the body, by adjusting the direction of the movable block It is possible to adjust a region where a person is detected. In addition, since the movable block is held by the body via the lens holding frame, the assembly work when the movable block is attached to another member is facilitated as compared with the case where the movable block is directly held by the body.

  According to a third aspect of the present invention, in the second aspect of the present invention, the lower surface of the protruding table is orthogonal to the front surface of the base.

  According to this configuration, assuming a vertical surface such as the outer wall of a building as the surface to be constructed, the bottom surface of the stand becomes a horizontal surface, so even if water enters the gap between the front cover and the stand, the stand It is difficult for water to go around the lower surface of the lens, and it is possible to prevent water from adhering to the light receiving lens. In addition, since the movable block can swing around the vertical downward direction, the degree of freedom of the setting range of the detection area can be increased as compared with the conventional configuration.

  According to a fourth aspect of the present invention, in the second or third aspect of the present invention, a draining plate is formed on each side of the back cover, and the lens holding frame is located between the two draining plates. .

  According to this configuration, since the draining plates are arranged on both sides of the lens holding frame, even if water enters the gap between the body and the back cover, the intruded water is separated from the lens holding frame on the draining plate. Passes through the opposite surface, does not wet the lens holding frame, and can prevent water from adhering to the light receiving lens.

  According to a fifth aspect of the present invention, in the first aspect of the invention, the front cover is detachable by sliding up and down with respect to the body, and anti-slip portions are provided on the outer side surfaces of the left and right side walls of the front cover. It is formed.

  According to this configuration, when the front cover is attached to and detached from the body, the finger is applied to the anti-slip portion, so that the front cover can be easily attached and detached.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, convex ribs are formed on the inner side surfaces of the left and right side walls of the front cover so as to extend in the front-rear direction at two upper and lower portions and to face the left and right side surfaces of the projecting base. It is characterized by being.

  With this configuration, the lateral movement range of the front cover with respect to the body is limited by the convex ribs, so that the backlash of the front cover with respect to the body in the lateral direction can be suppressed. Further, by forming the convex ribs, it is possible to suppress the occurrence of sink marks during the molding process when the front cover is formed as a synthetic resin molded product.

  According to a seventh aspect of the present invention, in the first aspect of the present invention, an assembly leg piece having an assembly hook at the front end portion projects from one of the body and the back cover, and an assembly hook engages with the other side. Thus, an assembly hole for integrally joining the body and the back cover is formed.

  According to this configuration, since the body and the back cover are coupled by the concave and convex engagement between the assembly hook provided at the front end portion of the assembly leg piece and the assembly hole, the assembly work is easier than when screwing. become.

  In the invention of claim 8, in the invention of claim 1, the load terminal and the power supply terminal for connecting the load and the power source are quick connection terminals for locking and holding the electric wire by the spring force of the lock spring made of a leaf spring, A terminal plate made of an insulating material that has a terminal board and a lock spring that serve as a load terminal and a power supply terminal in a lump and that has a wire introduction port through which an electric wire is introduced is opened. The circuit board includes a board, the back cover is provided in front and has a support protrusion for supporting the circuit board by contacting the rear surface of the circuit board, and the terminal case has the wire inlet opening rearward. And

  According to this configuration, even if a tension is applied to the power supply connected to the load terminal or the power supply terminal and a stress is generated on the circuit board, the stress can be distributed to the support protrusions, thereby preventing the circuit board from being damaged. be able to.

  In the invention of claim 9, in the invention of claim 1, the load terminal and the power supply terminal for connecting the load and the power source are quick connection terminals for locking and holding the electric wire by the spring force of the lock spring made of a leaf spring, A load terminal and a terminal plate to be a power supply terminal and a lock spring are housed together, and a terminal case made of an insulating material having an opening for introducing an electric wire is provided. The terminal case has the electric wire introduction port facing downward or obliquely downward It is characterized by having an opening.

  According to this configuration, since the wire introduction port is opened downward or obliquely downward, even if water enters from above, it is possible to avoid the entry of water into the power supply introduction port.

  According to the configuration of the present invention, since the front surface of the body is covered with the front cover and the front surface of the body is not normally exposed to the outside, a beautiful appearance can be obtained even if various operation units and nameplates are provided on the front surface of the body. Obtainable. In addition, since the body is provided with a protrusion and a water return rib is formed on the upper surface of the protrusion, even if rainwater enters the gap formed between the body and the front cover, the front side of the protrusion Water flows through the side of the stand and is discharged to the outside of the front cover, and even when various operation parts and nameplates are provided on the front of the body, Water can be prevented from adhering to the sensor block, and even if an opening communicating with the inside of the stand is formed on the front surface of the body, the front surface of the body does not get wet. Can be prevented.

  In the following description, a building such as a house is assumed as a construction target, and an outer wall of the building is assumed as a surface of the construction target. However, the present invention is applicable to other construction objects.

  In the conventional configuration, an automatic switch with a heat ray sensor of a type in which a part is embedded in the outer wall of the building is shown. However, in the present embodiment, the automatic switch is embedded without being embedded in the outer wall of the building. A sensor block 2 shown in FIG.

  The case 1 includes a body 10 that is exposed on the outer wall of a building via a packing 50 whose outer peripheral edge is formed in a rectangular shape by an elastic material such as soft vinyl chloride, and a sensor block 2 that is disposed on the rear surface side of the body 10. A back cover 20 that forms a storage space together with the body 10 and a front cover 30 that covers a part of the front surface of the body 10 are configured.

  The body 10 has a base 11 whose outer peripheral shape is rectangular and whose rear surface is open, and a rectangular parallelepiped-shaped projecting base 12 projecting inward from the outer peripheral edge of the base 11 on the front surface of the base 11. It is formed as a synthetic resin molded product in the shape provided. The peripheral wall of the base 11 has a step portion 11a on the outer surface so that the thickness dimension of the rear portion is smaller than that of the front portion, and the fitting groove 51 formed in the peripheral portion of the packing 50 over the entire circumference has a base. The dimensions are set so that the outer peripheral surface of the packing 50 and the outer peripheral surface of the base 11 are substantially flush with each other by inserting the rear part of the peripheral wall 11. An opening window 52 is formed inside the packing 50 at a portion corresponding to the protrusion 12 so that an electric wire described later can be drawn out through the opening window 52.

  On the back side of the packing 50, a recess is formed in which a synthetic resin mounting frame 53 is accommodated. The mounting frame 53 has a pair of upper and lower mounting holes 54 so that the mounting frame 53 can be mounted on a switch box or the like, and an opening 55 for passing an electric wire is formed at the center of the mounting frame 53. Further, screw mounting bases 56 in which nuts are embedded are formed at both upper and lower ends of the mounting frame 53. The case 1 is coupled to the mounting frame 53 using mounting screws 57 inserted from the front so as to be screwed to the screw mounting base 56. Therefore, the packing 50 is put on the mounting frame 53 fixed to the wall surface, and the case 1 is fixed to the mounting frame 53 with the mounting screw 57, whereby the packing 50 is sandwiched between the wall surface and the case 1.

  A pedestal portion 13 having a width dimension in the left-right direction that matches the width dimension of the base 11 is provided at the lower end of the projecting base 12. It is smaller than the width dimension. As shown in FIG. 3, an exposure window 14 that is semicircular on the front end side of the pedestal portion 13 is opened at a portion straddling the lower surface of the pedestal portion 13 and the front surface of the base 11. A mounting hole 15 into which the mounting screw 57 is inserted is drilled below the exposure window 14 in the base 11.

  In the lower part of the front surface of the pedestal 12 and above the pedestal 13, an operation groove 16 in which an operation part to be described later is arranged is formed over the entire length in the left-right direction of the pedestal 12. A plurality (four in the illustrated example) of operation holes 16 a are opened on the bottom surface of the concave groove 16. A groove portion 12 a that is recessed with respect to the upper side surface of the projecting table 12 is formed on each of the left and right side surfaces of the projecting table 12 and between the pedestal 13 and the operation groove 16. The lower peripheral wall of the groove portion 12 a is formed by a shelf portion 12 b that rises upward from the pedestal portion 13. An assembly hole 17 that communicates with the inside and outside of the projecting base 12 opens at the rear end of the groove 12a. Slide ribs 18 extending in the vertical direction protrude from the rear portions of the left and right side surfaces of the projecting base 12, and a relief hole 12 c formed when the slide rib 18 is formed at a portion of the base 11 that faces the slide rib 18. Opens. On the surface of the slide rib 18 facing the escape hole 12c, as shown in FIG.

  On the other hand, a water return rib 19 facing the upper part of the base 11 is formed on the rear upper surface of the projecting table 12 over the entire length of the projecting table 12 in the left-right direction. Further, a pair of right and left coupling holes 12d are perforated in the upper part of the front surface of the projecting base 12 so as to penetrate the inside and outside of the projecting base 12, and mounting screws 57 are provided at portions corresponding to both the coupling holes 12d. The mounting hole 15 to be inserted is drilled.

  The back cover 20 is a synthetic resin molded product, and is disposed so as to cover a portion of the rear surface of the protruding base 12 excluding the exposure window 14. As shown in FIG. 4, the main plate 21 of the back cover 20 has a lower piece 21 a that is in contact with the inner bottom surface of the base 11 below the projecting table 12, and is inserted into the projecting table 12 at an intermediate portion in the vertical direction. There are provided a substrate support piece 21b and an upper piece 21c which is located above the substrate support piece 21b and which is inserted deeper into the protrusion 12 than the substrate support piece 21b. Side plates 21d that contact the left and right inner surfaces of the projecting base 12 are continuous with both side edges of the substrate support piece 21b and the upper piece 21c.

  The left and right widths of the lower piece 21a are substantially the same as the left and right widths of the inner surface of the base 11, and the assembly holes provided in the projecting base 12 are formed on the left and right sides of the portion straddling the lower piece 21a and the substrate support piece 21b. The assembly leg piece 22 provided with the assembly hook 22a which engages with the projections and recesses 17 is projected. That is, the body 10 and the back cover 20 are coupled by the assembly hook 22 a engaging with the assembly hole 17 in a concavo-convex manner. A pair of left and right positioning ribs 23 for positioning a lens holding frame 40 (to be described later) are formed at a portion between both assembly leg pieces 22. The positioning rib 23 includes a pressing piece 23a extended in the vertical direction and a receiving piece 23b formed in a substantially L shape below the pressing piece 23a. Further, a positioning hole 23c is formed in each of a portion between the pressing piece 23a and the receiving piece 23b and a lower end portion of the lower piece 21a. A draining plate 29 continuous with the side plate 21d is formed at a position between the assembly leg piece 22 and the positioning rib 23. The lower end of the draining plate 29 is extended to the vicinity of the lower end of the receiving piece 23b.

  A plurality of (four in the illustrated example) support bosses 24 arranged in the left-right direction protrude from the lower front portion of the substrate support piece 21b. Further, a support projection 25 for supporting a circuit board, which will be described later, is provided on the right edge of the substrate support piece 21b. An alignment protrusion 25 a protrudes from the front end surface of the support protrusion 25, and an alignment rib 25 b is formed on the base side surface of the support protrusion 25. Further, an alignment protrusion 25c protrudes from the front surface of the side plate 21d at the left edge of the substrate support piece 21b.

  Most of the upper piece 21c is opened in a rectangular shape as a terminal window 26, and mounting legs 27 each provided with a mounting hook 27a at the front end are provided on both the left and right edges of the terminal window 26. In addition, mounting bosses 28 project forward from the left and right ends of the upper piece 21c in the peripheral portion above the terminal window 26, respectively.

  Next, the shape of the front cover 30 will be described. As shown in FIG. 5, the front cover 30 is formed in a shape that covers both the left and right side surfaces, the upper surface, and the front surface of the protrusion 12. However, the lower end edge of the front cover 30 abuts on the upper surface of the pedestal portion 13 of the pedestal 12, and the pedestal portion 13 of the pedestal 12 is exposed from the front cover 30. The front cover 30 is formed so as to be detachable by sliding up and down with respect to the body 10, and slide pieces 31 project from the inner surfaces of the rear ends of the left and right side walls of the front cover 30. The slide piece 31 can be inserted into the gap between the base 11 provided on the body 10 and the slide rib 18 from above. Further, on the surface of the slide piece 31 that faces the slide rib 18, a locking recess 31 a that engages with the locking protrusion 18 a formed on the slide rib 18 is formed. Therefore, in the state where the front cover 30 is mounted on the body 10, the front cover 30 is held by the body 10 by the engagement between the locking projection 18a and the locking recess 31a. Here, a pressing convex portion 12e that can be brought into contact with the inner surface of the front wall of the front cover 30 protrudes from the lower portion of the front surface of the protrusion 12 formed on the body 10 and above the pedestal portion 13, and the front cover When the pressing protrusion 12e is in contact with the front cover 30 in a state where 30 is mounted on the body 10, the engagement strength between the locking protrusion 18a and the locking recess 31a is increased.

  A pair of left and right auxiliary ribs 32 inserted into the gap between the front surface of the base 11 and the water return rib 19 are formed on the inner surface of the rear end of the upper wall of the front cover 30. Further, convex ribs 33a and 33b extending in the front-rear direction are formed at two upper and lower portions on the inner side surfaces of the left and right side walls of the front cover 30, respectively. The upper convex rib 33a has a shorter front-rear dimension than the lower convex rib 33b. By forming such convex ribs 33a and 33b, the movement of the front cover 30 in the left-right direction when the front cover 30 is attached to the body 10 is restricted, and the back-and-forth movement of the front cover 30 is restricted. It is suppressed. Further, the backlash of the front cover 30 in the front-rear direction is suppressed by the auxiliary rib 32 and the slide piece 31 described above. Furthermore, the formation of sink marks during molding is suppressed by forming the convex ribs 33a and 33b. On the outer side surfaces of the left and right side walls of the front cover 30 are formed anti-slip portions 34 that extend in the front-rear direction and have a plurality of protrusions arranged in the up-down direction. Therefore, when attaching / detaching the front cover 30 to / from the body 10, by putting a finger on the anti-slip portion 34, the front cover 30 can be prevented from slipping and workability can be improved.

  Incidentally, as shown in FIG. 2, the sensor block 2 includes two circuit boards 61a and 61b each made of a printed circuit board, and further, a heat ray sensor made of a pyroelectric infrared sensor separately from both circuit boards 61a and 61b. The movable block 70 provided with 71 is provided. A terminal block 80 is mounted on one circuit board 61a, and variable resistors 63a to 63c having operation units 62a to 62d for performing various settings and a switch 63d are provided on the other circuit board 61b. Each operation part 62a-62d is exposed from the hole 16a for operation, respectively.

  Since the operation of the present embodiment is not a gist, the circuit configuration will not be described in detail, but the present embodiment includes a brightness sensor (not shown) for detecting ambient illuminance in addition to the heat ray sensor 71, and a heat ray. When the sensor 71 no longer detects a person, the load is continuously turned on, and for a certain period of time after the surroundings are dark, the load is continuously turned on regardless of human detection by the heat ray sensor 71. By operating the welcome lighting time, brightness sensor sensitivity, external wall switch, etc., it becomes possible to continuously turn on the load regardless of human detection by the heat ray sensor 71. Yes. That is, the operation units 62a to 62c are for setting the welcome lighting time, the sensitivity of the brightness sensor, and the operation holding time, respectively. The operation unit 62d enables or disables the operation using the external switch. Is provided to select.

  The terminal block 80 includes a power supply terminal 81a for connecting a power supply, a load terminal 81b for connecting a load, and a child device terminal 81c for connecting a child device having a separate built-in heat ray sensor. A switch element that can be turned on and off between the power supply and the load is inserted between the power supply terminal 81a and the load terminal 81b, such as a relay. This switch element is basically used for detecting a person by the heat ray sensor 71. Open and close accordingly. However, since the various operations described above are possible, the switch element is turned on and off even under conditions other than human detection by the heat ray sensor 71. The child unit has a function similar to that of the sensor block 2 and is connected so that the heat ray sensor 71 and the heat ray sensor of the child unit are handled equally. The power supply terminal 81 a, the load terminal 81 b, and the slave terminal 81 c include a pair of terminal plates 82 and a pair of lock springs 83, and the spring force of the lock spring 83 causes the terminal plate 82 and the lock spring 83 to be interposed between them. The quick connection terminal which holds an electric wire is comprised. That is, the terminal block 80 is provided with six terminal plates 82 and lock springs 83 each. These terminal plate 82 and lock spring 83 are made of synthetic resin together with three release buttons 84 arranged so as to correspond to each pair of lock springs 83 corresponding to the power supply terminal 81a, the load terminal 81b, and the slave terminal 81c. The molded product is accommodated in a rectangular parallelepiped terminal case 85. One surface of the terminal case 85 is opened, and the inside of the terminal case 85 is partitioned into three chambers by a partition plate 85a, and each pair of power source terminals 81a, load terminals 81b, and child device terminals 81c is provided in each chamber. The terminal plate 82 and the lock spring 83 are housed together with the release buttons 84 one by one. A wire introduction port (not shown) corresponding to each terminal plate 82 is opened in the bottom plate of the terminal case 85, and the electric wire inserted into the wire introduction port is connected to the terminal plate 82 and the lock spring by the spring force of the lock spring 83. 83.

  Here, the peripheral portion of the terminal plate 82 is bent so that the lock spring 83 can be held, and a connection leg 82a mounted on the circuit board 61a is projected. The lock spring 83 has a known shape in which one end portion of the belt plate is bent in a J shape to form a locking piece and the other end portion is bent in an S shape to form a contact piece. The locking piece and the contact piece are formed so as to hold the power source by a spring force between a part of the terminal plate 82 and prevent the electric wire from coming off at the leading edge of the locking piece. The release button 84 is arranged at a portion straddling each pair of lock springs 83 forming the power supply terminal 81a, the load terminal 81b, and the slave terminal 81c, and receives the external force to pull the lock piece of the lock spring 83 away from the electric wire. It is possible to bend.

  As described above, since the power supply terminal 81a, the load terminal 81b, and the slave terminal 81c have a common terminal case 85, the terminal cases are individually provided for the power supply terminal 81a, the load terminal 81b, and the slave terminal 81c. Compared with the case where it is provided, the space occupied on the circuit board 61a is reduced, and the occupation ratio of the power supply terminal 81a, the load terminal 81b, and the slave terminal 81c in the circuit board 61a can be reduced. That is, if the circuit board 61a having the same area is used, the mounting area of other electronic components can be increased as compared with the case where the terminal cases are individually provided, and higher functionality can be achieved. Moreover, when the power supply terminal 81a, the load terminal 81b, and the slave terminal 81c are housed in separate terminal cases, there are two insulating plates between adjacent terminals, but in the configuration of this embodiment, they are adjacent. One insulating plate (insulating wall) exists between the terminals, which not only reduces the occupation rate of the terminal case 85 but also reduces the material cost. In addition, the power supply terminal 81a, the load terminal 81b, and the slave terminal 81c can be handled as one component, which facilitates the mounting work on the circuit board 61a, and enables mass production by mounting automation. Become.

  By the way, it is conceivable that the power supply inlet is provided in the case 1 without using the terminal case 85. In this case, the assembly is performed by the process shown in FIG. That is, in order to mass-produce the circuit board 61a, as shown in FIG. 7A, a substrate 90 having a size capable of manufacturing a plurality of circuit boards 61a is used. The substrate 90 is divided as shown in FIG. Here, when the case 1 is provided with the wire introduction port, the terminal plate 82, the lock spring 83, and the release button 84 must be accommodated in the case 1 as shown in FIG. After the lock spring 83 and the release button 84 are stored in the case 1, the terminal board 82 is mounted on the circuit board 61a with solder as shown in FIG. 7D, and finally assembled. That is, the mounting process using solder is required twice, and the circuit board 61a having a small area is handled in the second mounting process, and the mounting process is repeated for the number of products, so that the work efficiency is poor. Cause problems.

  On the other hand, by adopting the terminal case 85 provided with the wire inlet as in the present embodiment, the terminal plate 82, the lock spring 83, and the release button 84 are connected to the terminal case 85 as shown in FIG. After being stored in the terminal block 80, the terminal block 80 can be mounted together with other components on the substrate 90 before the division as shown in FIG. That is, the mounting process for soldering in the solder bath is performed once, and then the substrate 90 is divided and attached to the case 1 as shown in FIG. 6C, and the mounting process is performed once. In addition, handling is easy by handling a large substrate before division, and the work efficiency is increased by mounting a plurality of products once.

  Note that a pair of positioning projections 85d may protrude from the surface of the terminal case 85 facing the circuit board 61a as shown in FIG. In this case, a positioning notch 61d that is aligned with the positioning protrusion 85d is formed in the circuit board 61a. By inserting the positioning protrusion 85d into the positioning notch 61d, the terminal block 80 can be positioned relative to the circuit board 61a. When this configuration is adopted, the terminal case 85 and the circuit board 61a are aligned in the mounting work of the terminal block 80 on the circuit board 61a, so that the work efficiency of the mounting work of the terminal block 80 on the circuit board 61a is improved. Can be increased. However, since the terminal block 80 and the circuit board 61a are positioned by mounting the connecting legs 82a provided on the terminal board 82 on the circuit board 61a, the positioning protrusion and the positioning notch are not essential.

  By the way, a mounting recess 85 b is formed on each outer side surface of the terminal case 85 in the longitudinal direction, and a mounting hook 27 a provided at the tip of the mounting leg piece 27 provided on the back cover 20 is provided on the terminal case 85. The mounting recesses 85b are respectively engaged with the concave and convex portions. That is, the terminal block 80 is temporarily held by the back cover 20 by engaging the mounting hook 27a of the back cover 20 with the mounting recess 85b of the terminal case 85. In this state, the terminal block 80 is exposed on the rear surface of the case 1 from the terminal window 26 provided on the back cover 20. Further, in this state, the upper portion of the terminal case 85 is placed on the mounting boss 28, and the lower end portion of the circuit board 61 a is placed on the support protrusion 25 protruding from the back cover 20. The circuit board 61a is formed with an alignment hole 64 into which the alignment protrusion 25a protruding from the front end surface of the support protrusion 25 is inserted, and the back of the circuit board 61a is engaged by the engagement between the alignment protrusion 25a and the alignment hole 64. The lower portion of the circuit board 61a is positioned with respect to the cover 20. As described above, when the circuit board 61a on which the terminal block 80 is mounted is placed on the support protrusion 25 and the mounting boss 28, the external force in the direction of pulling out the electric wire with the tension acting on the electric wire with respect to the terminal block 80 or the like. When this occurs, the circuit board 61a is supported against this external force, so that the circuit board 61a is prevented from being damaged.

  Here, two fixing holes 85c are formed at the upper edge of the terminal case 85, and a terminal case is formed on the circuit board 61a using a fixing screw (not shown) that is screwed into the fixing hole 85c through the circuit board 61a. 85 is fixed. Since the terminal block 80 is fixed to the circuit board 61 a in this way, the circuit board 61 a is also held by the back cover 20 when the terminal block 80 is temporarily held by the back cover 20. Further, since the circuit board 61a can be fixed to the back cover 20 by so-called snap-in that only attaches the terminal block 80 to the mounting leg piece 27, the assembling work is facilitated.

  The circuit board 61b and the circuit board 61a are electrically connected to each circuit board 61a, 61b via connectors (so-called single-piece connectors) whose ends are respectively mounted. An alignment notch 65a is formed on the right side of the circuit board 61b so that the support protrusion 25 and the alignment rib 25b can be fitted, and the alignment notch 65c is fitted on the left side of the circuit board 61b. A notch 65b is formed. Therefore, when the circuit board 61b is aligned with the back cover 20 in a state where the circuit boards 61a and 61b are coupled by the connector, the circuit board 61a is also aligned with the back cover 20, and the terminal block 80 is thus aligned. Is temporarily held by the back cover 20. Then, the circuit board 61a is fixed to the back cover 20 by fixing the circuit board 61a to the terminal cover 85 using a fixing screw.

  Incidentally, the movable block 70 constituting the sensor block 2 is formed in a spherical shape by coupling the lens base 73, the light receiving lens 74 and the lens frame 75, and a heat ray is formed between the lens base 73 and the light receiving lens 74. A circular sensor substrate 76 on which the sensor 71 and the like are mounted is accommodated. The sensor board 76 is connected to the circuit board 61b via a connection line (not shown).

  The lens base 73 is hemispherical, has an annular position restricting rib 73a on the outer surface, and is provided with position restricting protrusions 73b on both outer side surfaces. A groove (not shown) is formed over the entire periphery of the opening edge of the lens base 73, and the peripheral portion of the light receiving lens 74 is fitted into the groove. The light receiving lens 74 is formed of a translucent material capable of transmitting visible light and heat rays, a lens portion 74a is formed at the center portion, and a peripheral portion is a holding portion 74b held between the lens base 73 and the lens frame 75. It has become. The lens portion 74 a is dome-shaped as a whole and is divided into a plurality of microlenses, so that sensitivity unevenness occurs in the field of view of the heat ray sensor 71. That is, when the sensitivity unevenness occurs in the visual field of the heat ray sensor 71, the heat dose received by the heat ray sensor 71 is changed even with a minute movement of the human body within the visual field. The lens frame 75 has a peripheral portion locked to the lens base 73, and is formed in an annular shape so that a holding portion 74 b that is a peripheral portion of the light receiving lens 74 is sandwiched between the lens base 73. ing.

  As described above, the movable block 70 in which the lens base 73, the light receiving lens 74, and the lens frame 75 are coupled is attached to the lens holding frame 40 so as to be swingable. The lens holding frame 40 is formed in an L shape so as to be attached to the exposure window 14 formed in the body 10. In other words, the lens holding frame 40 has a horizontal plate 41 that matches the lower surface of the protrusion 12 and a vertical plate 42 that matches the base 11. Both side portions of the rear end of the horizontal plate 41 are fitted between a pressing piece 23 a and a receiving piece 23 b of a positioning rib 23 provided on the back cover 20. In this state, the lens holding frame 40 is located between the draining plates 29, and even if water enters between the body 10 and the back cover 20, it passes through the outer surface of the draining plate 29. Therefore, the movable block 70 does not get wet, and the inconvenience that the water droplets adhere to the light receiving lens 74 and the detection area changes is prevented. The horizontal plate 41 and the vertical plate 42 are formed with positioning projections 43 that are respectively inserted into positioning holes 23 c provided in the back cover 20. Thus, the lens holding frame 40 is temporarily held on the back cover 20 by inserting the positioning protrusion 43 into the positioning hole 23 c and fitting the rear end portion of the horizontal plate 41 to the positioning rib 23. The body 10 coupled to the back cover 20 is formed with a support base (not shown) for supporting the front end portion of the horizontal plate 41, and the lower end of the vertical plate 42 is supported by the exposure window 14. By coupling the cover 20 to the body 10, the lens holding frame 40 is fixed to the case 1.

  A cylindrical holding frame portion 41a is formed in the central portion of the horizontal plate 41 so as to penetrate vertically, and a pair of mounting bases 41b are formed on the upper surface of the horizontal plate 41 on both sides of the holding frame portion 41a. . The inner diameter of the lower end portion of the holding frame portion 41a has a dimension between the outer diameter of the lower end portion and the outer diameter of the upper end portion of the lens frame 75, and the movable block 70 does not fall off the holding frame portion 41a and is inside the holding frame portion 41a. The head can be swung. A pressing plate 44 is disposed above the movable block 70, and both end portions of the pressing plate 44 are fixed to the mounting base 41b using fixing screws 45. A pusher 46 having a built-in push spring is attached to an intermediate portion of the press plate 44, and the tip of the pusher 46 abuts on the lens base 73 inside a position regulating rib 73 a provided on the upper surface of the lens base 73. . Further, the position restricting protrusion 73b provided on the lens base 73 is inserted into the position restricting groove 41c provided on the inner peripheral surface of the holding frame portion 41a.

  Therefore, the movable block 70 swings within the range where the position restricting projection 73b can move inside the position restricting groove 41c and within the range where the pusher 46 can move inside the move restricting rib 73a. It becomes possible. Here, when the swing angle of the movable block 70 is changed with respect to the lens holding frame 40, the movable block 70 is desired in a state where the movable block 70 is pushed up against the spring force of the pusher 46. If the upward force is removed thereafter, the outer peripheral surface of the lens frame 75 is pressed against the inner peripheral surface of the lower end portion of the holding frame portion 41a by the spring force of the pusher 46, and the position is maintained by friction between the two. Is done. In the present embodiment, since the lens holding frame 40 is separated from the body 10, the movable block 70 is attached to the lens holding frame 40 outside the body 10, and the holding plate 44 is fixed by the blind screw 45. Assembling work of peripheral members of the movable block 70 such as work becomes easy.

  The lower surface of the projecting base 12 is orthogonal to the front surface of the base 11, and the horizontal plate 41 of the lens holding frame 40 that holds the movable block 70 is mounted on the lower surface of the projecting base 12. When the case 1 is constructed with the vertical direction of 1 as the vertical direction (this construction state is common), the center line of the light receiving lens 74 (the center of the light receiving surface of the heat ray sensor 71 and the center of the light receiving lens 74) The straight line passing through the head can be swung in all directions around the vertical downward. With this configuration, the center line of the light-receiving lens 74 can be directed toward the building. For example, when the installation location is close to the road, only people near the entrance are detected without detecting ordinary passers-by. The degree of freedom of the setting range of the detection area is increased, for example, by setting the detection area to do so.

  With the above-described configuration, when the packing 50 is interposed between the body 10 and the wall surface, rainwater or the like does not enter the rear surface of the body 10, and when the upper surface of the case 1 gets wet with rainwater or the like, Although water or the like may enter between the body 10 and the front cover 30, water flows to the front side of the projecting table 12 because the water return rib 19 is formed on the upper surface of the projecting table 12. And the operation parts 62a to 62d will not get wet. Further, the water is guided to the side surface of the projecting table 12, and is discharged to the outside of the case 1 through the escape hole 12 c provided on the side of the projecting table 12. Here, since the escape holes 12c are formed between the both side edges of the back cover 20 and the projecting table 12, the water that has passed through the escape holes 12c does not enter the interior of the projecting table 12, and the body 10 It is discharged to the outside through a drainage notch 10a provided at the lower end.

  In the above-described embodiment, an example in which the assembly hole 17 is provided in the body 10 and the assembly leg piece 22 is provided in the back cover 20 to connect the body 10 and the back cover 20 is shown. It is good.

  Moreover, in embodiment mentioned above, although the electric wire introduction port is opened backward so that the electric wire Ln may be introduced from the back of the terminal block 80 like Fig.8 (a), the electric wire Ln is introduced from upper direction in this case. If this is the case, there is a possibility that water transmitted through the electric wire Ln may enter the terminal block 80 from the electric wire introduction port. Therefore, as shown in FIG. 8B, the wire introduction port may be opened downward or obliquely downward in the terminal case 85 so that the wire Ln is introduced from the lower side of the terminal block 80. Good. When such a configuration is adopted, even when the electric wire Ln is routed from above, the electric wire Ln is introduced into the electric wire introduction port above the lowermost end, so that water transmitted through the electric wire Ln enters the electric wire introduction port. The waterproofness becomes high without doing.

It is a disassembled perspective view which shows the case used for embodiment. It is a disassembled perspective view which shows the sensor block used in embodiment. It is a perspective view which shows the body used for the same as the above. It is a perspective view which shows the back cover used for the same as the above. It is a perspective view which shows the front cover used for the same as the above. It is process drawing which shows the mounting process of the terminal block to the circuit board in the same as the above. It is process drawing of a comparative example. (A) is principal part sectional drawing which shows the usage example same as the above, (b) is principal part sectional drawing which shows the usage example of another structure. It is sectional drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Sensor block 10 Body 11 Base 12 Projection base 14 Exposing window 19 Water return rib 17 Assembly hole 20 Back cover 22 Assembly leg piece 22a Assembly hook 25 Support protrusion 29 Drain plate 30 Front cover 33a, 33b Convex rib 34 Anti-slip Section 40 Lens holding frame 61a, 61b Circuit board 70 Movable block 71 Heat ray sensor 74 Light receiving lens 81a Power terminal 81b Power terminal 82 Terminal plate 83 Lock spring 85 Terminal case

Claims (9)

  A sensor block that includes a switch element inserted between a power source and a load and a heat ray sensor that receives heat rays radiated from the human body, and that can open and close the switch element according to human detection by the heat ray sensor, and a surface to be constructed A rectangular parallelepiped protrusion protruding from the front surface of the base that is exposed to the inner side of the outer periphery of the base, and a light receiving lens that makes the heat ray incident on the heat ray sensor is exposed from the lower surface of the protrusion The body that houses the sensor block in the stand, the back cover that is placed on the rear side of the body so as to surround the sensor block storage space together with the stand, and the shape that covers both sides, top, and front of the stand And a front cover that can be attached to and detached from the body, and a water return rib that guides water penetrating from the gap between the base and the front cover to the side of the base on the upper surface of the base. Over the whole length Rainproof type heat ray automatic switch with sensor, characterized by being made.   A spherical movable block that integrally includes the heat ray sensor and the light receiving lens, and a body that is fixed to the body so that the movable block is swingably held and the light receiving lens is exposed to an exposure window formed on the lower surface of the protruding base. 2. The automatic switch with rainproof heat ray sensor according to claim 1, further comprising a lens holding frame fixed at a position.   3. The automatic switch with a rainproof heat ray sensor according to claim 2, wherein a lower surface of the protrusion is orthogonal to a front surface of the base.   4. The automatic switch with a rainproof hot wire sensor according to claim 2, wherein a draining plate is formed on each side of the back cover, and the lens holding frame is located between the draining plates.   The said front cover is detachable by sliding up and down with respect to the said body, The slip prevention part is formed in the outer surface of the right-and-left both sides wall of a front cover, The Claim 1 characterized by the above-mentioned. Automatic switch with rainproof heat ray sensor.   2. The prevention according to claim 1, wherein convex ribs are formed on the inner side surfaces of the left and right side walls of the front cover so as to extend in the front-rear direction at two locations on the upper and lower sides and to face the left and right side surfaces of the projecting base. Automatic switch with rain heat sensor.   An assembly leg piece having an assembly hook at the tip is projected on one of the body and the back cover, and the assembly is integrally connected to the body and the back cover by engaging the assembly hook on the other side. 2. The automatic switch with rainproof heat ray sensor according to claim 1, wherein a hole is formed.   The load terminal and the power supply terminal for connecting the load and the power supply are fast connection terminals that lock and hold the electric wire by the spring force of the lock spring made of a leaf spring. And a terminal case made of an insulating material that has an opening for introducing an electric wire, and the sensor block includes a circuit board on which a load terminal and a power supply terminal are mounted. 2. The automatic with rain-proof type hot-wire sensor according to claim 1, further comprising a support projection for supporting the circuit board by contacting the rear surface of the board, wherein the terminal case has the wire introduction port opened rearward. switch.   The load terminal and the power supply terminal for connecting the load and the power supply are fast connection terminals that lock and hold the electric wire by the spring force of the lock spring made of a leaf spring. 2. A terminal case made of an insulating material having an electric wire introduction port for introducing and inserting an electric wire opened therein, wherein the electric wire introduction port is opened downward or obliquely downward in the terminal case. Automatic switch with rainproof heat ray sensor.

Images