JP4485834B2 - Wiring segment and teaching material for electric experiment having the wiring segment - Google Patents

Description

  The present invention relates to a wiring segment that can be wired easily and reliably, and a teaching material for electrical experiments having the wiring segment.

  For example, a battery, a miniature light bulb, and a plurality of wires are used as teaching materials for an electrical experiment for the lower grades of an elementary school, and the positive terminal of the battery and one terminal of the miniature light bulb are connected to each other with a wire, and the other side of the miniature light bulb is also connected. The closed terminal and the negative terminal of the battery are connected to each other with an electric wire to form a closed circuit, and current is passed from the battery to the miniature bulb via the electric wire (current is supplied to the closed circuit) to turn on the miniature bulb It has been known.

  This teaching material for electric experiments shows that when a closed circuit is configured using batteries, miniature bulbs and electric wires, current flows through the circuit and the miniature bulbs light up. It is used to show that the amount of current flowing through the circuit changes. For example, if the number of connected batteries (the number connected in series) is increased, the miniature bulbs will light up more brightly, and if multiple batteries are connected in series, the miniature bulbs will light up brighter than when connected in parallel. It is used as a teaching material that shows the amount of current flowing through the miniature bulb changes depending on the number of batteries and the way of connection.

  In the above teaching materials for electric experiments, instead of displaying the magnitude of the current flowing through the circuit quantitatively with an ammeter, the miniature bulb is turned on and the magnitude of the current flowing through the circuit at the brightness of the miniature bulb is measured. It has been used by students in the past.

  However, when using the above electric experiment teaching materials for home study, cut the wire to an appropriate length, peel off the insulation coating at the end of the wire to expose the copper wire portion, Since it is required to configure a closed circuit by connecting it to a battery or miniature bulb, it is difficult for elementary school children in particular, and it is difficult to handle this wire, so it has reached the stage of devising various types of closed circuits It has been pointed out that there are many cases that lose interest during the process.

  For this reason, as an alternative to an electric wire, for example, it has been proposed to use a plurality of metal rail pieces having contacts at both ends and cut to a predetermined length. If there is any deformation such as warping or bending, the contact at the end of one metal rail piece overlaps the contact at the end of the other metal rail piece, and the metal rail pieces are connected to each other. It has been found that contact failure (contact failure) may occur between metal rail pieces.

  Further, as an alternative to the electric wire, for example, on each surface of the cubic assembly block, a connector to which the end of the electric wire is connected and a coupling means using a magnet for connecting the assembly blocks to each other are arranged, A toy assembly block has been proposed in which electric wires are connected to each other via a connector and this connection is maintained by a coupling means (see Patent Document 1). Since the surfaces are joined together by overlapping each other to form a wiring, it is bulky, and it is a large-scale connection between a battery and a miniature light bulb, which is not suitable as a teaching material for electric experiments for lower grades of elementary school. is there.

  It is also pointed out that miniature bulbs are used as a means of displaying the magnitude of the current flowing in the circuit, but they are monotonous and quickly get tired, leaving little impression.

JP-A-11-128547

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a wiring segment that can be easily and reliably connected.

  It is another object of the present invention to provide a teaching material for electrical experiments in which a circuit is assembled using the wiring segments so that the magnitude of the current flowing through the circuit can be understood.

  The wiring segment according to claim 1 of the present invention that achieves the above object is a wiring segment that constitutes an electric circuit, and includes a connection projection and a connection hole, and the connection projection and the connection hole are provided in the connection segment. A wiring case containing a wiring piece having a plurality of connecting terminals extending, and slidably disposed in the wiring case in a state of being in electrical contact with any one of the plurality of connecting terminals; Connecting pieces protruding from one of the wiring segments, and the connecting protrusions and / or connecting slide pieces of one wiring segment are detachably inserted into the connecting holes of the other wiring segment, thereby connecting the wiring pieces to each other. It is characterized by connecting.

  In the wiring segment, the wiring piece is formed from a strip-shaped metal piece, the wiring case is formed in an elongated rectangular plate shape, the connection protrusion is formed at one end in the long side direction, and the long side direction is formed. The connection holes may be formed respectively at the other end and the both ends in the short side direction orthogonal to the long side direction.

  In addition, an insulating cover provided with an operation knob is attached to the surface of the connection slide piece that does not contact the connection terminal, and a guide groove for guiding the operation knob of the connection slide piece is formed in the wiring case. (Claim 3).

  Further, the connection terminal extending into the connection hole may be bent in a curved shape (claim 4).

  In addition, it is preferable that at least the horizontal width or thickness of the connection protrusion and the connection slide piece is set larger than the horizontal width or vertical width of the outlet of the power outlet (Claim 5).

Note that the teaching material for electric experiments using the wiring segment according to claim 1 of the present invention includes, for example , a plurality of wiring segments, a battery box that accommodates the battery, and a driver driven by the battery. The wiring segment has a connection projection and a connection hole, and a wiring case containing a plurality of connection terminals extending to the connection protrusion and the connection hole. The battery box includes a connection slide piece that is slidably disposed in the wiring case in a state of being in electrical contact with any one of the plurality of connection terminals, and that protrudes from the connection hole. segment, wherein the drive member is connected to a detachable mechanical and electrical to other battery boxes, provided with a projection battery box connection hole and battery box connection, said driving body Said wiring segments, wherein the battery box detachable mechanical and in the electrical connection comprises a projection driving body connection holes and driver connection, and the connecting protrusions and / or the connecting slide piece, wherein The wiring segment, the battery box, and the driver are connected to each other using the battery box connection protrusion, the driver connection protrusion, the connection hole, the battery box connection hole, and the driver connection hole. by, it can be configured to drive the drive member by the current supplied from the battery.

In the teaching material for electric experiments, the driving body may display the magnitude of the current flowing through the driving body in the amount of air, the amount of light, the amount of heat, or the volume.

Further, in the teaching material for electric experiments , the driving body is composed of a motor, a blower driven by the motor, and a floating body blown up by the blower, and the magnitude of the current flowing through the driving body is determined by the blowing height of the floating body. You may make it display now.

In this case, the floating body forms part of a sphere, it is not preferable to place a weight on the bottom.

Further, in the teaching material for electric experiments, the wiring segment of the wiring segment is formed from a strip-shaped metal piece, the wiring case of the wiring segment is formed in a square plate shape, and the connection protrusion is formed at one end in the long side direction. Forming the connection holes at the other end in the long side direction and both ends in the short side direction orthogonal to the long side direction, and connecting the connection segment of the wiring segment to the side not contacting the connection terminal even in the face attach the insulation cover with the operation knob not good.

In the teaching material for electric experiments, the battery box includes a positive terminal connected to the positive side of the battery and a negative terminal connected to the negative side, and a storage part for storing the battery; The battery box connection projection comprises a terminal case that accommodates the positive connection terminal piece connected to the positive terminal and the negative connection terminal piece connected to the negative terminal in a state of being electrically separated from each other, Formed at one end in the long side direction of the terminal case, the battery box connection hole is formed at the other end in the long side direction of the terminal case and at both ends in the short side direction orthogonal to the long side direction, The positive connection terminal piece extends to the battery box connection protrusion and the battery box connection hole, respectively, and the negative connection terminal piece extends to the battery box connection hole, respectively. Bridge, and the terminal case, but it may also houses a battery box for connection slide piece projecting from the hole battery box connection in contact the with the electrically positive connection terminal strip slidably.

Further, in the electric laboratory materials, the battery box and / or driver, it is not preferable to be equipped with safety devices for short circuit protection.

Further, in the above electric laboratory materials, the short circuit protection for safety devices, not preferred is the use of bimetallic. In the case of the short circuit countermeasure safety device provided in the battery box, the bimetal is preferably disposed between the plus terminal and the plus connection terminal piece or between the minus terminal and the minus connection terminal piece. better not.

Further, in the electrical experiment teaching material, the wiring segment connection protrusion, the connection slide piece, the battery box connection protrusion of the battery box, the battery box connection slide piece, and the driver connection protrusion of the driver, At least it is not preferable that the lateral width or thickness is larger than the horizontal width or vertical width of the insertion opening of the electrical outlet.

  According to the wiring segment of the present invention as set forth in claim 1, one of the wiring segments is connected via the connecting projection and the connecting hole formed in the wiring case, or the connecting slide piece slidably accommodated in the wiring case. Since the wiring piece and the wiring piece of the other wiring segment are connected to each other, there is no risk of contact failure between the wiring pieces compared to the case of using a metal rail piece, and the connection is ensured. Even school-grade children can easily and reliably connect wiring pieces. Further, as compared with the case of using a cube-shaped assembly block, it is not necessary to increase the scale, and handling is easy. Furthermore, since the connection slide piece can also be used for connection, various forms of wiring can be devised, and it can be used continuously without getting tired.

  According to the second aspect of the present invention, the wiring piece is formed from a strip-shaped metal piece, the wiring case is formed in an elongated rectangular plate shape, and the connection protrusion is formed at one end in the long side direction. Since the connection holes are respectively formed at the other end in the long side direction and at both ends in the short side direction orthogonal to the long side direction, the connection hole is not bulky and easy to handle as compared to the cubic assembly block. Connections can be easily made, and various types of wiring circuits can be assembled.

  According to the third aspect of the present invention, an insulating cover provided with an operation knob is attached to the surface of the connection slide piece that does not contact the connection terminal, and the operation knob of the connection slide piece is attached to the wiring case. Since the guide groove for guiding is formed, the connection operation between the wiring pieces using the connecting slide piece can be easily performed.

  Further, according to the present invention, the connection terminal extending into the connection hole is bent in a curved shape, so that the connection terminal is provided with a spring property, and the connection protrusion or the connection inserted into the connection hole. The contact is ensured by pressure contact with the slide piece, and the connection protrusion and the connection slide piece do not come out during use, so that there is no possibility of poor contact between the wiring pieces.

  Further, according to the present invention described in claim 5, since the connecting protrusion and the connecting slide piece are set to have at least a width or thickness larger than the width or length of the outlet of the power outlet, It is possible to prevent the connecting protrusion and the connecting slide piece from being erroneously inserted into the outlet of the power outlet, which is safe.

In the case of the teaching material for electric experiments described above (see paragraph 0017) , the wiring segment includes a plurality of wiring segments, a battery box that accommodates the battery, and a driving body driven by the battery, the wiring segment, the battery box, By connecting the driving bodies to each other, the driving body is driven by the current supplied from the battery. Therefore, between the connection pieces, between the connection pieces and the battery box, between the connection pieces and the drive body. There is no risk of contact failure between the battery box and the driving body, and even an elementary school child can easily assemble an electric circuit. In addition, redesigning the electrical circuit by rearranging the wiring, for example, connecting a plurality of batteries in series to the drive body to increase the current flowing through the drive body, or arranging a plurality of batteries in parallel to the drive body It is easy to devise an electric circuit, such as connecting and reducing the magnitude of the current flowing through the drive body so that the current flows for a long time, and it is possible to maintain interest in electricity without getting bored. It becomes possible.

In the teaching material for electric experiments, when the driving body is configured to display the magnitude of the current flowing through the driving body in terms of air volume, light quantity, heat quantity, or volume (see paragraph 0018) , the magnitude of the current is further increased. It can be expected to be understood in a familiar form, and the utilization range of electric energy can be easily understood.

In the teaching material for electric experiments, the driving body is composed of a motor, a blower driven by the motor, and a floating body blown up by the blower, and the magnitude of the current flowing through the driving body is determined by the blowing height of the floating body. When displaying (see paragraph number 0019) , it is not monotonous compared to simply displaying with the brightness of a miniature light bulb, and it can be expected that it will be interested in electricity. In addition, games for electric experiments using a motor, blower, and floating body as the driving body, for example, a game where two people use it, for example, “use only one battery box”, “use two battery boxes”, “wiring segment” "Use 6 cards", "Use 5 battery boxes and wiring segments together", etc. The first command card with multiple messages, "Create a circuit within 1 minute", "Connect slide piece for connection" Prepare multiple second command cards with messages such as “Create a circuit without using” and “Put weight on floating body”, turn these cards over and decide the first and second strike with Janken etc. A person selects one from the first command card and one from the second command card, assembles the circuit according to the command displayed on the selected card, rotates the motor to send air from the blower, and blows the floating body Up Measure the height, 5 points if it floats high, 1 point if it floats a little, 0 points if it does not float at all, then the next player also 1 from the first command card, 1 from the second command card You can assemble the circuit according to the command of the selected card, measure the floating body's blowing height, give it a number of points, repeat this several times, and use it for the game where the higher score wins, this It can be expected to improve the learning effect by playing an interest in electricity through play.

In the teaching material for electric experiments, when the floating body forms a part of a sphere and a weight is arranged at the bottom thereof (see paragraph 0020) , when the floating body is blown up by sending air from a blower, Ride the air flow in a stable state (as if it got up and rocked like a small boy, and immediately returned to the upright state) There is no risk of floating up to the height, swinging by the air flow, falling off the air flow, and falling down, so that the magnitude of the current can be expressed.

In the teaching material for electrical experiments, the wiring segment of the wiring segment is formed from a strip-shaped metal piece, the wiring case of the wiring segment is formed in a rectangular plate shape, and a connection protrusion is formed at one end in the long side direction, Connection holes are formed at the other end in the long side direction and at both ends in the short side direction orthogonal to the long side direction, and an operation knob is provided on the surface of the wiring segment that does not come into contact with the connection terminal. When installing an insulation cover (see paragraph number 0021) , it is easy to connect the wiring segments, connect the wiring segments to the battery box, or connect the wiring segments to the driver (circuit assembly), and connect the slide piece. The assembly of the circuit using the can also be facilitated.

In the electrical experiment teaching material, when the battery box is configured not only to accommodate a battery but also to have a function like a wiring segment (see paragraph 0022) , Connection between battery boxes becomes easy.

In the teaching material for electric experiments, when the battery box and / or the driving body is equipped with a safety device for countermeasures against a short circuit (see paragraph 0023) , the short circuit is assembled and a current flows only in the wiring segment. Even if it gets hot, it is safe because the current is cut off before it gets too hot.

In the teaching material for electric experiments, when a bimetal is used for the safety device for short circuit countermeasures (see paragraph 0024) , the cost is not high, the operation is reliable, and the short circuit is assembled by mistake. Even when reassembled, it is restored in a relatively short time, which is convenient for use.

In the teaching material for electrical experiments, the wiring segment connection projection, the connection slide piece, the battery box connection projection of the battery box, the battery box connection slide piece, and the driver connection projection of the driver are at least the lateral width or When the thickness is set to be larger than the horizontal or vertical width of the outlet of the power outlet (see paragraph 0025) , it is possible to prevent these protrusions from being accidentally inserted into the outlet of the power outlet. is there.

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

  FIG. 1 is a perspective view showing an embodiment of the teaching material for electric experiment of the present invention, FIG. 2 is an enlarged perspective view of a wiring segment used in the teaching material for electric experiment shown in FIG. 1, and FIG. 3 is a wiring segment shown in FIG. 4 is a cross-sectional view taken along the line AA of the wiring segment shown in FIG. 2, and FIG. 5 is a cross-sectional view taken along the line BB of the wiring segment shown in FIG. 6 is an enlarged cross-sectional view of a battery box used in the educational material for electric experiments shown in FIG. 1, FIG. 7 is an enlarged perspective view showing a positive connection terminal piece and a negative connection terminal piece of the battery box shown in FIG. 6, and FIGS. 19 is a plan view showing an example of a circuit assembled using the educational material for electric experiments shown in FIG. 1, and FIG. 20 is a partially cutaway view of the blower constituting the driving body of the educational material for electric experiments shown in FIG. FIG. 21 is a partially cutaway plan view of the blower shown in FIG. 20, and FIG. 1 is a cross-sectional view showing another embodiment of the floating body blown up by the teaching material for electric experiment in FIG. 1, FIG. 23 is a rear view when the blower shown in FIG. 20 is used for another purpose, and FIG. It is a top view of the air blower utilized for the use of.

  As shown in FIG. 1, for example, the teaching material for electrical experiments of the present embodiment includes a wiring segment 10 that forms wiring, a battery box 30 that houses a battery 25, a ball floating body 75 that is driven by the battery 25, and the like. And a driving body 50 having a motor 51.

  For example, as shown in FIGS. 2 to 4, the wiring segment 10 includes a wiring piece 12 having a plurality of connection terminals 11, an elongated rectangular plate-like wiring case 15 that accommodates the wiring piece 12, and the wiring case 15. A connecting slide piece 16 is slidably disposed in contact with the connection terminal 11.

  As shown in FIG. 3, the wiring piece 12 has a belt-like shape and is orthogonal to the long side direction at one end (front end) and the other end (rear end) in the long side direction and at one end (front end) in the long side direction. The above-mentioned connection terminals 11 are respectively provided at a total of six locations at both ends (left and right ends) in the short side direction and both ends (left and right ends) in the short side direction orthogonal to the long side direction at positions near the other end (rear end) in the long side direction. Is placed. The connection terminal 11 and the wiring piece 12 are integrally formed from a thin phosphor bronze plate or the like, for example. The connection terminal 11 disposed at one end (front end) in the long side direction of the wiring piece 12 is bent so as to stand up from the wiring piece 12 and extend substantially horizontally at the upper end (formed in an inverted L shape). The other connection terminals 11 are the connection terminals 11 disposed at the other end (rear end) in the long side direction of the wiring piece 12 and the connection terminals 11 disposed at both ends (left and right ends) in the short side direction, respectively. It is bent in a curved shape so as to protrude upward (formed in an inverted U shape).

  As shown in FIGS. 2 and 4, the wiring case 15 includes an upper case portion 17 and a lower case portion 18, and is composed of, for example, a translucent ABS resin. You can see through. A connection protrusion 19 is integrally formed at one end (front end) of the upper case portion 17 in the long side direction. Further, on the left and right side surfaces of the upper case portion 17 near one end (front end) in the long side direction, the other end (rear end) in the long side direction, and the left and right side surfaces near this other end (rear end side) 20 are formed respectively. The width and height of the connection hole 20 are set slightly larger than the width and height of the connection protrusion 19 and the connection slide piece 16 and the connection protrusion 19 and the connection slide piece 16 and the like are smooth. It is supposed to be plugged in.

  The wiring piece 12 is accommodated in the lower case portion 18, and the substantially horizontal connection terminal 11 disposed at one end (front end) in the long side direction extends into the connection protrusion 19 with its lower surface exposed. . In other words, the connection terminal 11 protrudes from the front end of the wiring case 15 in a state where the connection terminal 11 is covered by the connection protrusion 19 except for its lower surface.

  Further, the other connection terminals 11 of the wiring pieces 12 accommodated in the lower case portion 18 respectively extend to the connection holes 20 (see FIG. 4). The connection terminal 11 has a connection terminal in the connection projection 19 that is inserted through the connection hole 20 so that the upper end of the bent portion of the connection terminal 11 is positioned slightly higher than the lower edge of the connection hole 20. 11, the connecting slide piece 16 and the like are pressed and bent downward, while the connecting terminal 11 and the connecting slide piece 16 in the connecting projection 19 are pressed against the inner upper surface side of the upper cover portion 17. . Therefore, by simply inserting the connection protrusion 19, the connection slide piece 16, etc. into the connection hole 20, these connections can be made reliably mechanically and electrically.

  The connection slide piece 16 is formed of a thin phosphor phosphor bronze plate or the like, like the connection piece 12. As shown in FIGS. 2 and 5, the connection slide piece 16 extends along the short side direction of the connection piece 12 at a position near one end in the long side direction of the wiring case 15 (position where the connection hole 20 is formed). It is set in the upper case part 17 so that it may slide, and it is set to the length which mounts (straddles) on the two connection terminals 11 in the short side direction both ends of the connection piece 12. FIG. The connecting slide piece 16 is covered with an insulating cover 21 except for the lower surface that comes into contact (sliding contact) with the connection terminal 11. An operation knob 22 is provided at the center of the insulating cover 21. The upper case portion 17 is formed with a guide groove 23 for guiding the operation knob 22 along the short side direction. When the operation knob 22 is grasped and the connecting slide piece 16 is slid, the connecting slide piece 16 is removed from one of the left and right connecting holes 20 near one end (front end) of the wiring case 15 (upper case portion 17). It protrudes and can be inserted into a connection hole 20 or the like of another wiring segment 10.

  The above-described connecting protrusion 19 and connecting slide piece 16 are formed with a width and thickness larger than that of the outlet of the power outlet so that they are not accidentally inserted into the outlet. Is given.

  As shown in FIG. 6, the battery box 30 includes, for example, a housing part 31 that houses the battery 25 and a terminal case 32 that is integrally formed on the bottom surface of the housing part 31. Consists of transparent ABS resin.

  The accommodating portion 31 is formed in a box shape having an open upper surface, and a positive terminal 33 connected to the positive side of the battery 25 is disposed on the inner surface of one end (front end) in the long side direction, and the other end in the long side direction. A negative terminal 34 connected to the negative side of the battery 25 is disposed on the inner surface of the (rear end). The plus terminal 33 and the minus terminal 34 extend into the terminal case 32, respectively.

  A battery box connection projection 35 is integrally formed at one end (front end) in the long side direction of the terminal case 32, and both ends (left and right ends) in the short side direction orthogonal to the long side direction near the one end (front end). The battery box connection hole 36 is formed. In addition, the battery box connection hole 36 is provided at the other end (rear end) in the long side direction of the terminal case 32 and at both ends (left and right ends) in the short side direction orthogonal to the long side direction near the other end (rear end). Each is formed.

  As shown in FIGS. 6 and 7, a first plus connection terminal piece 37 connected to the plus terminal 33 extending into the terminal case 32 is disposed at one end (front end) in the long side direction of the terminal case 32. Further, second connection terminal pieces 38 formed integrally with the first plus connection terminal pieces 37 are arranged at both ends (left and right ends) in the short side direction orthogonal to the long side direction near the one end (front end). .

  The first plus connection terminal piece 37 extends into the battery box connection projection 35 with its lower surface exposed. In other words, the first plus connection terminal piece 37 protrudes from the front end of the terminal case 32 in a state of being covered by the battery box connection protrusion 35 except for its lower surface.

  The second plus connection terminal piece 38 extends to the battery box connection hole 36 at both ends (left and right ends) in the short side direction near the front end of the terminal case 32.

  A battery that slides along the short side direction orthogonal to the long side direction while being placed on the second plus connection terminal piece 38 as shown in FIG. 6 near one end (front end) of the terminal case 32 in the long side direction. A box connecting slide piece 39 is arranged. The battery box connecting slide piece 39 is covered with an insulating cover 40 except for the lower surface which comes into contact (sliding contact) with the second plus connection terminal piece 38. An operation knob 41 is provided at the center of the insulating cover 40. On the upper surface of the terminal case 32 (the bottom surface of the housing portion 31), a guide groove 42 for guiding the operation knob 41 is formed along the short side direction. When the operation knob 41 is picked and the battery box connecting slide piece 39 is slid, the battery box connecting hole 36 on the left and right ends of the terminal case 32 protrudes from the battery box connecting hole 36, and the connecting hole 20 of the wiring segment 10 and other batteries. It can be inserted into the battery box connection hole 36 of the box 30.

  The other end (rear end) in the long side direction of the terminal case 32 and both ends (left and right ends) in the short side direction near the other end (rear end) extend in the battery box connection hole 36. Negative connection terminal pieces 45 are respectively arranged. As shown in FIG. 7, these minus connection terminal pieces 45 are connected to each other, and are connected to the minus terminal 34 extending into the terminal case 32 through a bimetal 46 as a safety device for short circuit countermeasures.

  As described above, the bimetal 46 is disposed between the negative terminal 34 and the negative connection terminal piece 45, and when the closed circuit is assembled without the driver 50 being interposed by mistake (in FIGS. 8 to 19). When the wiring segment 10 or the battery box 30 is arranged instead of the driving body 50 to assemble a closed circuit), that is, when a short circuit is assembled, it is heated by the current flowing through the circuit and is shown by a two-dot chain line in FIG. Thus, the connection between the minus terminal 34 and the minus connection terminal piece 45 is cut off. As a result, no current flows through the circuit and the battery 25 is prevented from overheating.

  The positive terminal 33, the negative terminal 34, the first positive connection terminal piece 37, the second positive connection terminal piece 38, the battery box connection slide piece 39, and the negative connection terminal piece 45 described above are, for example, as thick as the connection piece 12. Thin phosphor bronze plate or the like. Further, as shown in FIG. 7, the second plus connection terminal piece 38 and the minus connection terminal piece 45 described above are bent in a curved shape (inverted U shape) so as to protrude upward. The upper end of the curved portion of the second plus connection terminal piece 38 and the minus connection terminal piece 45 is positioned slightly higher than the lower edge of the battery box connection hole 36, and is inserted through the battery box connection hole 36. The connection segment 10 is pushed by the connection projection 19 (connection terminal 11), the connection slide piece 16, the battery box connection projection 35 (first plus connection terminal piece 37) of the battery box 30, the battery box connection slide piece 39, and the like. While being bent downward, the connection protrusion 19 (connection terminal 11), the connection slide piece 16, etc. are pressed against the inner upper surface of the terminal case 32. Therefore, the connection projection 19 (connection terminal 11) and the connection slide piece 16 of the connection segment 10, the battery box connection projection 35 (first plus connection terminal piece 37) of the battery box 30, the battery box connection slide piece 39, and the like. These are securely and mechanically electrically connected only by inserting them into the battery box connection holes 36. Further, the battery box connection protrusion 35 (first plus connection terminal piece 37) and the battery box connection slide piece 39 are formed with a width and thickness larger than that of the power outlet, thereby causing an error. Therefore, safety measures are taken so as not to be inserted into the insertion port.

  As shown in FIGS. 1, 20 and 21, the driving body 50 is for blowing the air blower 53 driven by the motor 51 described above and the air flow from the blower 53 to a floating body 75 such as a ball. The blow-up portion 57, the driving body connecting 62 hole and the driving body connecting projection 63 for connecting to the wiring segment 10 and the battery box 30 described above, and the battery 25 are accommodated, and the driving body 50 itself supplies power to the motor 51. Power supply unit 68.

  As shown in FIGS. 20 and 21, the blower 53 includes an impeller 54 that is rotationally driven by a motor 51 and an air suction port 55. The impeller 54 is connected to the drive shaft 52 of the motor 51, and sends the air taken in (suctioned) from the suction port 55 to the blowing unit 57.

  The blowing unit 57 holds an air blowing port 58, a blowing tower 59 that is detachably attached to the air blowing port 58, and a floating body 75 such as a ball that is detachably attached to the upper end of the blowing tower 59. A holding basket 60 is provided.

  On the inner wall surface of the air outlet 57, as shown in FIG. 21, a rectifying piece 61 that rectifies the air flow generated by the impeller 54 is integrally formed. Thereby, the air flowing through the blowing tower 59 is rectified, and the floating body 75 such as a ball can be blown up substantially straight.

  The floating body 75 such as a ball is made of, for example, polystyrene, and is formed so as to be light so that it can be blown up even when the motor 51 is small and has low power.

  Although the air sent from the blower 53 is rectified by the rectifying piece 61, it is inevitable that turbulent flow is generated in the vicinity of the peripheral surface of the floating body 75, and the floating body 75 swings in the air flow due to this turbulent flow. Or the floating body 75 falls in the middle without being able to get on the air flow and becomes unstable, and it becomes difficult to express the magnitude of the current flowing through the motor 51 to the blowing height of the floating body 75. In order to avoid this, for example, as shown in FIG. 22, a polystyrene floating body 75, which is formed in a substantially mortar shape (a part of a sphere is formed) formed by cutting out the upper half and the bottom of a sphere. A weight 76 made of cardboard is attached to the bottom surface, and the center of gravity of the entire floating body 75 is raised and set as low as Koboshi. Thus, the floating body 75 can ride in a stable state in the air flow without fear of falling, and the magnitude of the current flowing through the motor 51 can be expressed by the height of the floating body 75 blown up.

  A connection terminal piece 64 bent in a substantially trapezoidal shape is disposed in the driver connection hole 62, and a flat connection terminal piece 65 is exposed in the driver connection protrusion 63 with its lower surface exposed. Be placed.

  The driver connection hole 62 has a connection projection 19 (connection terminal 11), a connection slide piece 16, a battery box connection projection 35 (first plus connection terminal piece 37), or a battery box connection slide. The piece 39 is detachably inserted, and is electrically connected to the wiring segment 10 and the battery box 30 via the connection terminal piece 64. The driver connection protrusion 63 is inserted into the connection hole 20 of the wiring segment 10 or the battery box connection hole 36 of the battery box 30 and is electrically connected to the wiring segment 10 and the battery box 30 via the connection terminal piece 65. Connected to. In addition, the driving body connection protrusion 63 is formed with a width and thickness larger than that of the outlet of the power outlet so that safety measures are taken so as not to be accidentally inserted into the outlet. Yes.

  The driving body connecting terminal pieces 64 and 65 are connected to a power feeding terminal 67 in an insertion port 66 formed in the driving body 50 via a wiring piece (not shown). A pair of power supply terminals (not shown) provided on the motor 51 are inserted into the insertion port 66, and a switch 56 (see FIG. 1) disposed on the motor 51. One power supply terminal of the motor 51 is connected to the power supply terminal. By closing the open / close switch disposed between one end of the coil of the motor 51, power is supplied from the battery 25 accommodated in the battery box 30 via the wiring segment 10 and the like, and the motor 51 is driven.

  The power supply unit 68 includes a storage unit 69 formed in a box shape so as to store a plurality of (for example, two) batteries 25 in a standing state, and a lid unit that is detachably attached to the upper end opening of the storage unit 69. 70. The accommodating portion 69 is partitioned into a plurality of (two) rooms via a partition wall 71 formed in the interior thereof and extending in the vertical direction, and the battery 25 is accommodated in each room. In addition, although not shown, a positive connection terminal piece and a negative connection terminal piece connected to the positive terminal and the negative terminal of the battery 25 are arranged on the bottom of the housing portion 69. The positive connection terminal piece and the negative connection terminal piece are It is connected to the power feeding terminal 67 through a wiring piece (not shown).

  On the inner surface of the lid 70, there is a terminal piece 72 that connects (in series connection) the positive terminal of one battery 25 housed in the housing part 69 to the negative terminal of the other battery 25 housed in the housing part 69. Be placed.

  Therefore, when the battery 25 is housed in the housing portion 69, the lid portion 70 is put on the housing portion 69 and the switch 56 is closed, the battery 25 and the motor 51 are connected to the power supply terminal 67, the terminal piece 72, and a positive connection terminal (not shown). A closed circuit is formed through a piece and a negative connection terminal piece, and the battery box 30 containing the wiring segment 10 and the battery 25 described above can be connected to the driving body 50 without connecting the battery 25 contained in the housing portion 69. Electric power can be supplied to the motor 51.

  Although not shown in the figure, the driving body 50 is provided with a bimetal 46 (see FIGS. 6 and 7) as a safety device for short circuit countermeasures, and even if a short circuit is assembled, it becomes hot. The current is interrupted by the bimetal before passing.

  In FIG. 3, FIG. 4, FIG. 5, FIG. 6, etc., the connection terminal 11, the wiring piece 12, the connection slide piece 16, the positive terminal 33, the negative terminal 34, the first positive connection terminal piece 37, the second positive connection terminal piece. 38, the battery box connection slide piece 39, the minus connection terminal piece 45, etc. are shown to be thicker than actual to clearly show them.

  Next, a method for using the teaching material for electric experiments according to the present embodiment will be described.

  The connection projection 19 (connection terminal 11), the connection hole 20 and the connection slide piece 16 of the wiring segment 10, the battery box connection projection 35 (first plus connection terminal piece 37) of the battery box 30, and the battery box. The connection hole 36 and the battery box connection slide piece 39 are connected to each other via the drive body connection hole 62 and the drive body connection protrusion 63 (connection terminal piece 65) of the drive body 50, that is, the connection protrusion. 19 (connection terminal 11), connection slide piece 16, battery box connection projection 35 (first plus connection terminal piece 37), battery box connection slide piece 39, and driving body connection projection 63 (connection terminal piece 65). The wiring segment 10 and the battery 25 are accommodated by being detachably inserted into the connection hole 20, the battery box connection hole 36, and the driver connection hole 62. The pond box 30 and the driving body 50 are connected, for example, as shown in FIGS. 8 to 19, and a plurality of closed circuits (for example, 12 pieces) in which the battery 25 is connected in series or in parallel to the driving body 50. Can be configured.

  FIG. 8 shows a case where two batteries 25 are connected in series to the driver 50 using three wiring segments 10 and two battery boxes 30. In FIG. 8, the connection method of the wiring segments 10 is different. However, in the case shown in FIG. 18, which will be described later, two batteries 25 are connected in series to the driving body 50 using the same three wiring segments 10. The same amount of current flows through the motor 51. Therefore, the height at which the motor 51 is driven to blow up the floating body 75 such as a ball is the same as that shown in FIG.

  FIG. 9 shows a case where one battery 25 is connected to the driver 50 using six wiring segments 10 and one battery box 30. Although the number of wiring segments 10 is different in FIG. 9, a current of the same magnitude flows as in the case shown in FIG. Therefore, the height at which the motor 51 is driven to blow up the floating body 75 such as a ball is the same as that shown in FIG. Further, from the viewpoint of the magnitude of the current flowing through the motor 51 (the height at which the floating body 75 such as a ball is blown up), two batteries 25 are connected in parallel to the drive body 30, and will be described later with reference to FIGS. 16 or the current of the same magnitude as shown in FIG. 19 flows, and the height of blowing up the floating body 75 such as a ball is the same.

  FIG. 10 shows a case where three batteries 25 are connected in series to the driving body 50 using six wiring segments 10 and three battery boxes 30. In FIG. 10, the connection method of the wiring segments 10 is different. However, similarly to the case shown in FIG. 17 described later in which six battery segments 10 are used and three batteries 25 are connected in series, the driving is performed. The magnitude of the current flowing through the motor 51 of the body 50 is as shown in FIG. 8, in which two batteries 25 are connected in series, or in FIG. 13, FIG. 15, or FIG. Therefore, the height at which the motor 51 is driven and the floating body 75 such as a ball is blown up is higher.

  FIG. 11 shows a case where three wiring segments 10 and two battery boxes 30 are used and two batteries 25 are connected in parallel to the driving body 50. In FIG. 11, two batteries 25 are used. However, since the batteries 25 are parallel to the driving body 50, the motor is compared with the case shown in FIG. 8 or the like in which two batteries 25 are connected in series. The magnitude of the current flowing through 51 is small, and therefore the height at which the motor 51 is driven to blow up the floating body 75 such as a ball is low. However, in the case shown in FIG. 9 where one battery 25 is used, in the case shown in FIG. 14 described later, or in the case shown in FIGS. 16 and 19 described later in which two batteries 25 are connected in parallel, the same size is used. Current flows through the motor 51, and the height at which the motor 51 is driven to blow up the floating body 75 such as a ball is the same as that shown in these figures. However, since two batteries 25 are connected in parallel, the time during which current flows through the motor 51 (drive time of the motor 51) is longer than the case shown in FIGS.

  FIG. 12 shows a case where the battery 25 is connected in parallel to the driver 50 using six wiring segments 10 and three battery boxes 30. In FIG. 12, three batteries 51 are used, but two batteries connected in series and one battery are connected in parallel to the driver 51 (series-parallel connection). Compared to the case shown in FIG. 8 in which two batteries 25 are connected in series to the drive body 51, the magnitude of the current flowing through the motor 51 of the drive body 50 is small. The height at which the body 75 is blown up is lower than in the case shown in FIG. 8 or the like, but in the case shown in FIG. 9 in which one battery 25 is used, or in the case shown in FIG. 11 in which two batteries 25 are connected in parallel. Therefore, the current flowing through the motor 51 is large, and the height of the floating body 75, such as a ball, is higher than the case shown in FIG. 9 or the case shown in FIG.

  FIG. 13 shows a case where the battery 25 is connected in series to the driver 50 using five wiring segments 10 and two battery boxes 30. In FIG. 13, the wiring segments 10 are connected in different ways, but similarly, five wiring segments 10 are used, and two batteries 25 are connected in series to the driving body 51 in FIG. 15 described later. An electric current having the same magnitude as that shown in the figure flows to the motor 51, and therefore the height of the floating body 75 such as a ball is the same as the blowing height. Further, although the number of the wiring segments 10 is different, the current of the same magnitude as in the case shown in FIG. 8 in which two batteries 25 are connected in series to the drive body 51 or the case shown in FIG. Therefore, the height of the floating body 75, such as a ball, is the same as that shown in FIGS.

  FIG. 14 shows a case where one battery 25 is connected to the drive body 50 using four wiring segments 10 and one battery box 30. In FIG. 14, the number of wiring segments 10 is different, but the case shown in FIG. 9 using one battery 25, the case shown in FIG. 11 in which two batteries 25 are connected in parallel to the drive body 51, etc. A current having the same magnitude as that flows through the motor 51, and therefore the height of the floating body 75, such as a ball, is the same as that shown in FIGS.

  FIG. 15 shows a case where two batteries 25 are connected in series to the driving body 50 using five wiring segments 10 and two battery boxes 30. In FIG. 15, the number of wiring segments 10 is different, but the current of the same magnitude as in the case shown in FIG. 8 in which two batteries 25 are connected in series to the driving body 50 or the case shown in FIG. Therefore, the blow-up height of the floating body 75 such as a ball is the same as that shown in FIGS.

  FIG. 16 shows a case where two batteries 25 are connected in parallel to the driving body 50 using six wiring segments 10 and two battery boxes 30. In FIG. 16, although the number of wiring segments 10 is different, the current of the same magnitude as in the case shown in FIG. 11 in which two batteries 25 are connected in parallel to the driving body 50 or the case shown in FIG. Therefore, the height of the floating body 75, such as a ball, is the same as that shown in FIGS.

  FIG. 17 shows a case where three batteries 25 are connected in series to the driving body 50 using six wiring segments 10 and three battery boxes 30. In FIG. 17, the wiring segments 10 are connected in different ways, but the same size as that shown in FIG. 10, in which six wiring segments 10 are used and three batteries 25 are connected in series to the driver 50. Therefore, the height of the floating body 75 such as a ball that is blown up is the same as that shown in FIG.

  FIG. 18 shows a case where two batteries 25 are connected in series to the driver 50 using three wiring segments 10 and two battery boxes 30. In FIG. 18, three wiring segments 10 are used. However, the same current as in the case shown in FIG. 8 in which the wiring segments 10 are connected to each other flows in the motor 51. The blowing height of the body 75 is the same as that shown in FIG. Further, although the number of the wiring segments 10 is different, a current of the same magnitude as that shown in FIGS. 13 and 15 in which two batteries 25 are connected in series to the driving body 50 flows to the motor 51, and thus a ball or the like The blowing height of the floating body 75 is the same as that shown in FIGS.

  FIG. 19 shows a case where two batteries 25 are connected in parallel to the driver 50 using five wiring segments 10 and two battery boxes 30. In FIG. 19, the number of wiring segments 10 is different, but a current of the same magnitude as that shown in FIGS. 11 and 16 in which two batteries 25 are connected in parallel to the driving body 50 flows to the motor 51. The blow-up height of the floating body 75 such as a ball is the same as that shown in FIGS.

  As described above, in this embodiment, the connection projection 19 (connection terminal 11) of the wiring segment 10, the connection hole 20 and the connection slide piece 16, and the battery box connection projection 35 (first plus connection terminal) of the battery box 30 are provided. Piece 37), battery box connection hole 36 and battery box connection slide piece 39, driver connection hole 62, driver connection protrusion 63 (connection terminal piece 65), etc., that is, connection protrusion 19, 35, 63 and the connecting slide pieces 16, 39 are inserted into the connecting holes 20, 36, 62 so that the wiring segment 10, the battery box 30 containing the battery 25, and the driving body 50 are connected to each other. Therefore, the connection is easy and reliable, and the connection method of the wiring segment 10, the battery box 30 containing the battery 25 and the driving body 50 is not monotonous, and the connection It is possible to constitute various closed circuit by devising the way.

  Further, the motor 51 is rotated, thereby driving the blower 53 to generate an air flow. By blowing up the floating body 75 with this air flow, the magnitude of the current flowing to the motor 51 is shown. It is possible to clearly understand the difference between series connection and parallel connection, and it is not monotonous compared to the case of simply displaying with the brightness of a miniature light bulb, and it can be expected that it will be interested in electricity.

  Further, since the thickness and width of the connection projections 19, 35, 63 and the connection slide pieces 16, 39 are larger than the insertion port of the power outlet, the connection projections 19, 35 are erroneously inserted into the insertion port. There is no fear and it is safe. Further, since the thickness and width of the connecting projection 19 and the like are simply made larger than the outlet of the power outlet, there is no need to use a special member or device, and the cost is not increased.

  In addition, since the bimetal 46 is disposed between the battery box 30 and the driving body 50 (between the negative terminal 34 and the negative connection terminal piece 45 in the case of the battery box 30), a short circuit is assembled by mistake. When the current flows through only the wiring segment 10, the bimetal 46 is heated and bent by the current flowing through the circuit to cut the circuit (in the battery box 30, the negative terminal 34 and the negative connection terminal piece 45 Block the connection). That is, the current is cut off before it gets too hot, which is safe. In addition, since the bimetal 46 is used, the restoration to the original state is quicker than when the circuit is shut off using, for example, a shape memory alloy, and it is not necessary to wait for a long time.

  Moreover, the teaching material for electric experiments of the present embodiment can be used for a game performed by two people. For example, “use only one battery box 30”, “use two battery boxes 30”, “use six wiring segments 10”, “use five battery boxes 30 and wiring segments 10 together”, etc. "Create a circuit within 1 minute", "Create a circuit without using the connecting slide pieces 16, 39", "Add a weight 76 to the floating body 75" Prepare two or more second command cards that display a message such as "Turn them over, and decide the first and second attack with Janken etc., the first person from the first command card, one from the second command card Select one, assemble the circuit according to the command displayed on the selected card, rotate the motor 51 to send air from the blower 53, measure the blowing height of the floating body 75, and if it floats high, 5 points 1 point if it floats a little, 0 points if it does not float at all, then the next player also selects 1 card from the 1st command card and 1 card from the 2nd command card, and according to the command of the selected card You can assemble the circuit, measure the floating height of the floating body, give it a number of points, and repeat this multiple times, and use it for the game where you win the higher score. Thereby, it is possible to learn positively how the battery 25 can be connected to allow a large current to flow, and it can be expected to increase interest in learning and improve learning motivation.

  In addition to blowing up the floating body 75, for example, as shown in FIGS. 23 and 24, a cover 74 provided with a filter 73 is detachably attached to the side of the blower 53 where the suction port 55 is formed. If the blower tower 59 is connected to the motor 51 and the impeller 54 is rotationally driven by the motor 51, the blowup tower 59 is changed to a suction tower for sucking air, and the driving body 50 can be used as a cleaner. In addition, since the sucked dust is captured by the filter 73, there is no possibility of impeding the rotation of the impeller 54.

  In the above embodiment, the case where the magnitude of the current flowing in the closed circuit is expressed by the height of the floating body 75 is shown. However, the present invention is not limited to this. For example, it can be expressed by the light amount, the heat amount, or the volume. As a result, it can be expected to understand the magnitude of the current in a more familiar form, and it is possible to easily understand the utilization range of electric energy.

  Further, the bimetal 46 may be disposed between the plus terminal 33 and the first plus connection terminal piece 37 or the second plus connection terminal piece 38.

  The floating body 75 with the weight 76 shown in the above embodiment not only has the center of gravity lowered by the weight 76, but also a part (peripheral surface) is made spherical so that it can be stabilized even in an air flow that tends to generate turbulence. However, the present invention is not limited to the above-described teaching materials for electric experiments, and can be applied in various fields.

It is a perspective view which shows one Example of the educational material for electrical experiments of this invention. It is an expansion perspective view of the wiring segment used for the educational material for electrical experiments shown in FIG. It is a perspective view of the wiring piece of the wiring segment shown in FIG. It is arrow sectional drawing which follows the AA line of the wiring segment shown in FIG. It is arrow sectional drawing which follows the BB line of the wiring segment shown in FIG. It is an expanded sectional view of the battery box used for the educational material for electric experiments shown in FIG. FIG. 7 is an enlarged perspective view showing a plus connection terminal piece and a minus connection terminal piece of the battery box shown in FIG. 6. It is a top view which shows the example of a circuit assembled using the educational material for electric experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. It is a top view which shows another example of a circuit assembled using the educational material for electrical experiments shown in FIG. FIG. 2 is a front view of the blower constituting the driving body of the electric experimental teaching material shown in FIG. It is a partially cutaway plan view of the blower shown in FIG. It is sectional drawing of the floating body blown up by the educational material for electric experiments shown in FIG. It is a rear view in the case of utilizing the air blower shown in FIG. 20 for another use. It is a top view of the air blower utilized for another use shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wiring segment 11 Connection terminal 12 Wiring piece 15 Wiring case 16 Wiring slide piece 17 Upper case part 18 Lower case part 19 Connection protrusion 20 Connection hole 21 Insulation cover 22 Operation knob 23 Guide groove 25 Battery 30 Battery box 31 Housing part 32 Terminal case 33 Positive terminal 34 Negative terminal 35 Battery box connection projection 36 Battery box connection hole 37 First positive connection terminal piece 38 Second positive connection terminal piece 39 Battery box connection slide piece 40 Insulating cover 41 Operation knob 42 Guide Groove 45 Negative connection terminal piece 46 Bimetal 50 Drive body 51 Motor 53 Blower 54 Impeller 55 Suction port 56 Switch 57 Blow-up part 58 Air blow-out port 59 Blow-up tower part 60 Holding basket 61 Rectification piece 62 Driver-body connection hole 63 Driver connection Projections 64, 65 connecting terminal 66 insertion port 67 feeding terminal 68 power supply unit 69 housing part 70 lid part 71 the partition wall 72 the terminal piece 75 float 76 weight

Claims (5)

A wiring segment constituting an electric circuit,
A wiring case containing a wiring piece having a connection protrusion and a connection hole and having a plurality of connection terminals extending to the connection protrusion and the connection hole;
A sliding piece for connection that is slidably disposed in the wiring case in a state of being in electrical contact with any one of the plurality of connection terminals, and that protrudes from the connection hole;
The wiring protrusions are connected to each other by removably inserting the connection protrusions and / or the connection slide pieces of one wiring segment into the connection holes of the other wiring segment. Wiring segment. The wiring segment according to claim 1,
The wiring piece is formed from a strip-shaped metal piece,
The wiring case has an elongated rectangular plate shape, the connection projection is formed at one end in the long side direction, and the connection is respectively made at the other end in the long side direction and at both ends in the short side direction orthogonal to the long side direction. A wiring segment characterized in that a hole is formed. In the wiring segment according to claim 1 or 2,
An insulating cover provided with an operation knob on the surface on the side that does not contact the connection terminal is attached to the slide piece for connection,
A wiring segment characterized in that a guide groove for guiding the operation knob of the connecting slide piece is formed in the wiring case. In the wiring segment according to claim 3,
The wiring segment, wherein the connection terminal extending into the connection hole is bent in a curved shape. In the wiring segment according to any one of claims 1 to 4,
The wiring segment, wherein at least the horizontal width or thickness of the connection protrusion and the connection slide piece is set to be greater than the horizontal width or vertical width of the outlet of the power outlet.

Images